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[Title page of Opera quae ad nos extant omnia, with Froben family device of caduceus clasped by two hands]

[Title page of Opera quae ad nos extant omnia, with Froben family devi...

Title page in: Opera quae ad nos extant omnia / Hippocrates. Basileae : [Per H. Forbenium et N. Episcopi]. 1546. Published in: The tradition of science / Leonard C. Bruno. Washington, D.C. : Library of Congress... More

[Astrological device showing signs of the Chinese calendar, with case]

[Astrological device showing signs of the Chinese calendar, with case]

Inscribed in pencil on lower left corner of paper mount: Kano Nov. 1878. From the "Medicine" series. Gift; Mrs. David Murray; 1909. Forms part of: David Murray collection. Forms part of: Japanese prints and dr... More

[Men in costumes with device used for punishment, Korea] - Frank G. Carpenter collection

[Men in costumes with device used for punishment, Korea] - Frank G. Ca...

Title and other information transcribed from caption card and item. LOT subdivision subject: Korea. Frank and Frances Carpenter Collection (Library of Congress). Caption card tracings: Geogr.; Punishment.

Radio inspectors now on the job. Watch out for the ------ Radio inspectors will get you! Broadcasting stations that do not keep on their own wave LE may expect to receive a hurry call from a person resembling a physician with a medical case---In fact, however, he is RA Inspector with a portable frequency indicator. This device designed by the Radio Laboratory of the Bureau of Standards

Radio inspectors now on the job. Watch out for the ------ Radio inspec...

A black and white photo of a man in a suit and tie. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Conversion. Jukebox plant. Production of the drill jig part, pictured here, is included in the conversion of a jukebox manufacturing company to war production. Control instruments based on the jukebox selection device will be manufactured for America's armed forces. Rudolph Wurlitzer, North Tonawanda, New York

Conversion. Jukebox plant. Production of the drill jig part, pictured ...

Public domain photograph of a machine part, motor, equipment, free to use, no copyright restrictions image - Picryl description

[Occupational portrait of a carpenter, three-quarter length, seated, facing front, holding hammer and nail, on a chair at his side are a saw, box plane, and measuring device]

[Occupational portrait of a carpenter, three-quarter length, seated, f...

Photographer unidentified. Case: central floral motif surrounded by lillies and leaves. Purchase/exchange; Gary Vroegindewey; 1981; (DLC/PP-1981:380R.14). Forms part of: Daguerreotype collection (Library of Congress).

Capt. S.N. Petrenko with calibration testing device (Bu. of Stds.), 3/19/26

Capt. S.N. Petrenko with calibration testing device (Bu. of Stds.), 3/...

Public domain photograph, 1910s-1920s portrait, American, free to use, no copyright restrictions image - Picryl description

Cotton from the bale is transported by belt to machine for making cotton bats. Weighing device is so sensitive that it directs the cotton from one machine to another. Laurel, Mississippi

Cotton from the bale is transported by belt to machine for making cott...

Public domain photograph of 1930s America, free to use, no copyright restrictions image - Picryl description

Conversion. Silverware plant. To meet Air Corps Ordnance specifications, this bomb shackle must be accurate to the 1/10,000th of an inch, and that's pretty tight measuring by anybody's standards. An employee of an Eastern plant which produced silver tableware in peacetimes, inspects the shackle aided by a surface height device. Oneida Ltd., Oneida, New York

Conversion. Silverware plant. To meet Air Corps Ordnance specification...

Public domain photograph of New York in 1930s, free to use, no copyright restrictions image - Picryl description

[Occupational portrait of a carpenter, three-quarter length, seated, facing front, holding hammer and nail, on a chair at his side are a saw, box plane, and measuring device]

[Occupational portrait of a carpenter, three-quarter length, seated, f...

Photographer unidentified. Case: central floral motif surrounded by lillies and leaves. Purchase/exchange; Gary Vroegindewey; 1981; (DLC/PP-1981:380R.14). Forms part of: Daguerreotype collection (Library of Congress).

[Stereograph of man with device designed for flying]

[Stereograph of man with device designed for flying]

133944S(?) U.S. Copyright Office. Copyright by Underwood & Underwood. No. U-117748. No. 007748.

[Banquet scene with flag draping and men seated holding up listening device to one ear]

[Banquet scene with flag draping and men seated holding up listening d...

A large group of men sitting around a table. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Weather signals recorded. add weather device. Washington, D.C., Sept. 13. By means of this chronograph, Dr. L.V. Astin records the weather signals sent down from the radiometeorograph attached to the balloon as it soars anywhere from 9 to 11 miles in the upper air. 9/13/37

Weather signals recorded. add weather device. Washington, D.C., Sept. ...

Public domain photograph, 1910s-1920s portrait, American, free to use, no copyright restrictions image - Picryl description

Conversion. Jukebox plant. As indigenous to the American scene as the hamburger stand and Mickey Mouse, juke boxes like this, here being tested. From now on, electrical control instruments, based on the principle of the jukebox selection device, will be produced here for use by Uncle Sam's armed forces. Rudolph Wurlitzer, North Tonawanda, New York

Conversion. Jukebox plant. As indigenous to the American scene as the ...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Mouse-trap armor for caddies - here is the newest safety device seen on California links

Mouse-trap armor for caddies - here is the newest safety device seen o...

Photograph shows caddy Mozart Johnson wearing "the latest safety device for golf courses" fashioned from wire-mesh and worn over the head and upper torso to protect "caddies and ball-retrievers from wild golf b... More

[Motion picture device]. 19th century, Library of Congress collection

[Motion picture device]. 19th century, Library of Congress collection

26454 U.S. Copyright Office. Copyright by Donaldson Brothers. Public domain photograph of a train car, locomotive, engine, free to use, no copyright restrictions image - Picryl description

Smoke screen device, 9/1/23 - Glass negative photogrpah. Public domain.

Smoke screen device, 9/1/23 - Glass negative photogrpah. Public domain...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Loading device moving railroad cars full of timber at camp near Effie, Minnesota

Loading device moving railroad cars full of timber at camp near Effie,...

Public domain photograph - United States during 1930s Great Depression, free to use, no copyright restrictions image - Picryl description

After gathering pine cones, seeds are threshed out with this device. Withlacoochee Land Use Project, Florida

After gathering pine cones, seeds are threshed out with this device. W...

Public domain photograph - historical image of Florida, United States, free to use, no copyright restrictions image - Picryl description

Device for testing testers. Washington, D.C., May 25. Herbert L. Whittemore, Chief Justice of the Engineering Mechanics Sections, U.S. Bureau of Standards, has been awarded the Edward Longstreth medal for his work in developing this device for testing the machines which in turn test construction materials. The medal is awarded annually by the Franklin Institute, 5/25/37

Device for testing testers. Washington, D.C., May 25. Herbert L. Whitt...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. Building. Device called Ice Lite in palm of hand

Electric Institute of Washington, Potomac Electric Power Co. Building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

[Design drawing for stained glass window with St Lucy with palm leaf and sword; and St Agatha with lily, and torture device(?)]

[Design drawing for stained glass window with St Lucy with palm leaf a...

Public domain image of watercolor painting from British-related collections, free to use, no copyright restrictions - Picryl description

[Design drawing for stained glass 5-light rose trellis window with mullions as compositional device]

[Design drawing for stained glass 5-light rose trellis window with mul...

Picryl description: Public domain image of a stained glass window, free to use, no copyright restrictions.

Machine signs 7,000 social security checks per hour with no writer's cramp. Washington, D.C., Dec. 14. John W. Thomas is shown here feeding social security checks into a check signing device which reels off some 7,000 checks per hour. The checks are being made at the Treasury Department's Disbursing Division, and will be [...] out starting next Jan. 1 to recipients of social security payments

Machine signs 7,000 social security checks per hour with no writer's c...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Demonstration of safety control device for railroad crossing before members of Congress at the Capitol today

Demonstration of safety control device for railroad crossing before me...

W.T. Ferguson of the Safety Railway Crossing Co. of Charleston, W. Va., posed with Rep. A.W. Taylor, Rep. J.V. McClintock, H.R. Rathbone, and Rep. J.F. Strother. National Photo Company Collection (Library of Congress).

Railroad crossing saftey device before House Com., [4/19/26]

Railroad crossing saftey device before House Com., [4/19/26]

A group of men standing next to each other. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Setting up stand for mechanical amusement device, state fair, Donaldsonville, Louisiana

Setting up stand for mechanical amusement device, state fair, Donaldso...

Picryl description: Public domain photograph of an amusement park, free to use, no copyright restrictions.

Keeping score in the war production drive. 2) Like to mop up on these babies? Well, that's the idea. Above is another suggested War Production Board (WPB) device to enable America's factory workers to know the score in their drive to erase these gentlemen. As plant production draws closer to its goal, Awful Adolf, Bungling Benito and Horrors Hirohito begin to disappear from the face of the blackboard as they will presently disappear from the face of the earth

Keeping score in the war production drive. 2) Like to mop up on these ...

Picryl description: Public domain historical photo of Washington DC during the First World War, free to use, no copyright restrictions image.

Some of our troops stationed in India taking a shower under a homemade device made from airplane crates

Some of our troops stationed in India taking a shower under a homemade...

[Mechanical device for scaling towers]

[Mechanical device for scaling towers]

Illus. in: De re militari / Roberto Valturio. [Verona] : Joannes Nicolai de Verona, 1472. Published in: The tradition of technology : Landmarks of Western technology ... / Leonard C. Bruno. Washington, D.C. : ... More

[Calculating device for multiplication using circular disks]

[Calculating device for multiplication using circular disks]

Illus. in: The description and use of two arithmetick instruments. London : Printed by M. Pitt, 1673. Published in: The tradition of technology : Landmarks of Western technology ... / Leonard C. Bruno. Washing... More

[Spectators in an arena viewing the ascension of a balloon driven by propellers with an inflation device in the foreground] / G. Meloni disegnò e inv.

[Spectators in an arena viewing the ascension of a balloon driven by p...

Tissandier collection. Public domain scan of lithograph illustration, free to use, no copyright restrictions image - Picryl description

Safety device for blind landing of air-track. Washington D.C. The monitoring device of the air-track blind landing in the above photo tells the man on the ground if all the beams are being sent out correctly if there is any error in transmission of the beams this machine will pick It up immediately and the pilot can be notified to come into the airdrome again while corrections can be made

Safety device for blind landing of air-track. Washington D.C. The moni...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Steel manufacture, Allegheny-Ludlum. Space is a prime requisite for a steel plant. The huge production machinery itself and the various tools for treatment of the steel after it has been refined may extend for acres. In the center here is the exit end of a plate mill. After the plates are hot-rolled and released, they pass through the roller leveling device at the right, where they are flattened for commercial use

Steel manufacture, Allegheny-Ludlum. Space is a prime requisite for a ...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

Long Bell Lumber Company, Cowlitz County, Washington. Loading device used at a spar tree for placing logs on railroad cars from the yard

Long Bell Lumber Company, Cowlitz County, Washington. Loading device u...

Public domain photograph of the United States military and military-industrial complex before World War Two, 1930s, free to use, no copyright restrictions image - Picryl description

Anaconda smelter, Montana. Anaconda Copper Mining Company. Conveyor belt above the ore storage bins; by a moving device ore is delivered to any one of several storage bins

Anaconda smelter, Montana. Anaconda Copper Mining Company. Conveyor be...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

Geiger Field, Washington. Officers and men are taught to be on the alert for a gas attack at any time. This jeep appears at unexpected places and sends out a charge of tear gas from the ingenious device attached to the muffler. Those in the vicinity, to protect themselves from the irritating gas, must be able to don their masks instantaneously

Geiger Field, Washington. Officers and men are taught to be on the ale...

Picryl description: Public domain image of an automobile, 1940s car, free to use, no copyright restrictions.

[Television screen showing depiction of panel with a circular device, over which is written "Glenn's Voice", during John Glenn's orbit around earth in the Friendship 7 space capsule on February 20, 1962]

[Television screen showing depiction of panel with a circular device, ...

Contact sheet folder caption: "Glenn shot round the world 3 times on television, MST, 2/20/62." U.S. News & World Report Magazine Photograph Collection. Contact sheet available for reference purposes: USN&WR C... More

[Diagram of an early barometer or measuring device]

[Diagram of an early barometer or measuring device]

Illus. and text in: E. Torricelli, Lezioni Accademiche d'Evangelista Torricelli. Firenze, 1715, pp. XXVIII. Ref. copy may be in SSF - WEIGHTS AND MEASURES. This record contains unverified data from caption card... More

[Cut-paper silhouette of John I. Hawkins, left profile, possibly by himself using his physiognotrace device]

[Cut-paper silhouette of John I. Hawkins, left profile, possibly by hi...

Inscribed in ink on lower left corner: Mr. Hawkins. (DLC/PP-1998:151.28) Forms part of: Marian S. Carson collection at the Library of Congress.

Chisholm mine rescue device - Glass negative photogrpah. Public domain.

Chisholm mine rescue device - Glass negative photogrpah. Public domain...

Photograph shows a mine rescue device possibly related to the work of K.H. Chisholm, a US Bureau of Mines inspector who dealt with mine safety issues. (Source: Flickr Commons project, 2014)

Direction and draft of drilling operations is determined by a camera enclosed in a tube with a compass, lighting facilities and timing device, which is sent to bottom of hole. Oil well, Kilgore, Texas

Direction and draft of drilling operations is determined by a camera e...

Public domain photograph - historical image of Texas, United States, free to use, no copyright restrictions image - Picryl description

Conversion. Jukebox plant. Production of the drill jig part, pictured here, is included in the conversion of a jukebox manufacturing company to war production. Control instruments based on the jukebox selection device will be manufactured for America's armed forces. Rudolph Wurlitzer, North Tonawanda, New York

Conversion. Jukebox plant. Production of the drill jig part, pictured ...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Buried trolley tracks salvaged to aid war program. Removing abandoned trolley tracks to provide much needed scrap for Uncle Sam. Here, in Asheville, North Carolina, a local inventor demonstrates his "railjerk" for doing the trick. He claims his device, employing three men, can pry loose a mile of track a day

Buried trolley tracks salvaged to aid war program. Removing abandoned ...

Picryl description: Public domain image of military vehicle, automobile, tractor truck, free to use, no copyright restrictions.

[Design drawing for stained glass 5-light rose trellis window with mullions as compositional device]

[Design drawing for stained glass 5-light rose trellis window with mul...

Public domain image of watercolor painting from British-related collections, free to use, no copyright restrictions - Picryl description

Final check, weather device. Washington, D.C., Sept. 13. L.L. Stockman, also of the Bureau of Standards, Radium Division, uses a wave meter to check the radiometeorograph before attaching it to the parachute and the balloon. When the inflated bag breaks, which it usually does after several hours flying, the instrument is parachuted to the ground. Many times the instrument is found and returned to the bureau. The radiometeorograph contains two radio tubes, a miniature dry cell battery and devices which record and send the weather signals which, in turn, are recorded on a chronograph in Dr. Astin's bood [?] radio room.

Final check, weather device. Washington, D.C., Sept. 13. L.L. Stockman...

A black and white photo of a man holding a camera. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Dr. E. Francis Warren, of Harvard U., believes he will be able to "shoot down" the heaviest clouds and fog by his new invention demonstrated recently at Bolling Field, Wash., by Army fliers. The process uses sand and he states that if enough airplanes are equipped with this device, it will not only be possible to break up clouds and cause rainbut to remove fogs from over both cities and harbors. The picture shows Lt. W. E. Melville pouring sand into the pit. Directly underneath the wing can be seen a nozzle that sprays the sand through the air

Dr. E. Francis Warren, of Harvard U., believes he will be able to "sho...

Picryl description: Public domain image of an aircraft, aviator, 1910s-1920s, early 20th-century aviation, free to use, no copyright restrictions.

U.S. experts test weather device. Washington, D.C., Sept. 13. Scientists of the National Bureau of Standards today conducted a test of the new radiometeorograph, a device attached to parachute and balloon and sent into the skies to radio back signals giving the pressure, temperature and humidity of the upper air. Preparing the balloon for the ascension are Dr. L.V. Astin, (left) of the Bureau's Electrical Division, and Dr. L.F. Curtiss, head of the Radium Division. The balloon carries the instrument as high as 50,000 or 60,000 feet. 9 to 11 miles high. Today's test was conducted for the U.S. Weather Bureau. 9/13/37

U.S. experts test weather device. Washington, D.C., Sept. 13. Scientis...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

[Design drawing for stained glass window with St Lucy with palm leaf and sword; and St Agatha with lily, and torture device(?)]

[Design drawing for stained glass window with St Lucy with palm leaf a...

Public domain reproduction of illuminated manuscript page, free to use, no copyright restrictions image - Picryl description

[Start of the first flight of 1905, Orville Wright at controls of the machine, near the hangar at Huffman Prairie. The two figures in the center are probably Wilbur Wright and Charles E. Taylor. The catapult launching device appears for the first time in a photograph]

[Start of the first flight of 1905, Orville Wright at controls of the ...

Title based on: Wilbur & Orville Wright, pictorial materials: a documentary guide / Arthur G. Renstrom. Washington: Library of Congress, 1982, p. 59. Attributed to Wilbur and/or Orville Wright. Reference copy i... More

This device on hat or helmet means U.S. Marines / F.

This device on hat or helmet means U.S. Marines / F.

U.S. Marine Corps insignia and hat and helmet with the insignia. Promotional goal: U.S. J26. 191-.

The yardstick is being applied to the measuring of radio waves by means of parallel device of galvanometer, the radio laboratory of the Bureau of Standards has succeeded in measuring very short radio waves, only ten meters in length

The yardstick is being applied to the measuring of radio waves by mean...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Members of Civil Aeronautics Authority inspect latest aid to airplane pilots. Washington, D.C., Oct. 10. An instrument which gives airplane pilots their height above the ground over which the plane is flying was demonstrated today to members of the Civil Aeronautics Authority by officials of the Western Electric Co. and the United Airlines. Claimed to be the first successful altimeter showing terrain clearance, the new device operates by radio, using the shortest wave ever employed for aviation, officials of the companies stated. In the photograph, left to right: Col. Sumter Smith, Peter C. Sandrette, Supt. of the United Airline's communication laboratory who was in charge of the demonstration; and Thomas Hardin. Smith and Hardin are members of the Civil Aeronautics Authority, 10/10/38

Members of Civil Aeronautics Authority inspect latest aid to airplane ...

A black and white photo of three men in suits. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

[Design drawing for stained glass 5-light rose trellis window with mullions as compositional device]

[Design drawing for stained glass 5-light rose trellis window with mul...

Public domain image of watercolor painting from British-related collections, free to use, no copyright restrictions - Picryl description

Man employing measuring device - Public domain dedication image

Man employing measuring device - Public domain dedication image

Illus. in: Petrus Apianus, Cosmographie, Antwerp, 1581. Reference copy may be in LOT 7007. This record contains unverified, old data from caption card. Caption card tracings: BI WORKS; Cosmography; G&M Div.; Ma... More

[Female students exercising, one with a wall-mounted device using ropes and pulleys, Western High School, Washington, D.C.]

[Female students exercising, one with a wall-mounted device using rope...

No. 19. In album: "Western High School." Forms part of: Frances Benjamin Johnston Collection (Library of Congress).

[Female student exercising with a wall-mounted device using ropes and pulleys, Western High School, Washington, D.C.]

[Female student exercising with a wall-mounted device using ropes and ...

No. 17. In album: "Western High School." Forms part of: Frances Benjamin Johnston Collection (Library of Congress).

Life boat device on "IMPERATOR"

Life boat device on "IMPERATOR"

Photo shows a model of the S.S. Imperator, an ocean liner of the Hamburg America Line. (Source: Flickr Commons project, 2009)

What is this? Every American citizen should know that this device is worn by our U.S. Marines, who serve at sea, at home, and abroad.

What is this? Every American citizen should know that this device is w...

Poster showing the emblem of the United States Marine Corps. Text continues: There is a splendid opportunity for foreign travel with good pay and all expenses paid. It's a two-in-one service both naval and mil... More

Three way vehicle boom. This is what is left of a tri-phibian, a device intended to fly in the air, run on the highway, or through the water. The inventor, [...] Viachos of Washington, was in it when it blew up. Now he is in the hospital. A.M. Crumpler, shown here with Mrs. Viachos, helped pull the inventor from the wreckage. It did not get into the air. 10/25/35

Three way vehicle boom. This is what is left of a tri-phibian, a devic...

A woman standing next to a car with a bike on it. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

A black and white photo of a man on a crane, Minnesota. Farm Security Administration photograph.

A black and white photo of a man on a crane, Minnesota. Farm Security ...

Public domain photograph - United States during the 1930s and 1940s, Farm Security Administration, New Deal, free to use, no copyright restrictions image - Picryl description

Bureau of Standards designs new device for studying water flow through plumbing fixtures. Washington, D.C., March 13. A new type of rate-of-flow meter for studying the rate of variation of flow of water through plumbing fixtures and for use in investigation presenting similar problems has just been designed and built by the U.S. Bureau of Standards with the cooperation of the Plumbing Fixture Manufacturers Research Associateship. Mr. H.M. Eaton, who is in charge of the hydraulics laboratory where the device is installed, is shown in foreground of picture, 3-13-40

Bureau of Standards designs new device for studying water flow through...

Public domain photograph of Industrial building, free to use, no copyright restrictions image - Picryl description

Mechanic John Clark demonstrates use of computerized device, called a "controller," that directs operation of a loom.

Mechanic John Clark demonstrates use of computerized device, called a ...

Forms part of a group of images documenting scenes at Kalkstein Silk Mills, Inc., 75 Wood Street, Paterson, New Jersey.

Novel device for stopping a runaway horse - Designed by Ed. Reichenbach, Orrville, Ohio

Novel device for stopping a runaway horse - Designed by Ed. Reichenbac...

Man seated in carriage rigged with a weight attached to pulleys, which is lifting a horse off of ground. Advertisement label of Reichenbach's Tile Drains. LOT subject: Sewerage. "19625X." Title and other inform... More

TARGET PRACTICE. RANGE FINDING DEVICE

TARGET PRACTICE. RANGE FINDING DEVICE

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Device manufactured by the National Ouija Board Co., Washington, D.C.

Device manufactured by the National Ouija Board Co., Washington, D.C.

Title and other information transcribed from caption card and item. LOT subdivision subject: Social Life & Customs. National Photo Company Collection (Library of Congress). French Coll. - WASHINGTON (D.C.). Ref... More

[Reproduction of page from notebook of Leonardo da Vinci showing a geared device assembled and disassembled]

[Reproduction of page from notebook of Leonardo da Vinci showing a gea...

Illus. in: Il codice atlantico di Leonardo da Vinici nella Biblioteca ambrosiana di Milano. Milano : U. Hoepli, 1894-1904. Published in: The tradition of technology : Landmarks of Western technology ... / Leon... More

Railroad crossing saftey device before House Com., 4/19/26

Railroad crossing saftey device before House Com., 4/19/26

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Leg saver. Chester Antos, student at Georgetown University medical school, photographed with the newly devised Emerson suction pressure apparatus which designers believe will prevent amputation in many cases. The mechanical "boot" is to be used in treatment of severe cases of peripheral vascular diseases. The device was developed by Dr. Louis A. Hermann of Cincinnati. By increasing and decreasing the air pressure alternatively, the "boot" tends to stimulate circulation through the leg. The pump boot is a gift to Georgetown University Hospital from an alumnus. 11/12/35

Leg saver. Chester Antos, student at Georgetown University medical sch...

A black and white photo of a man standing next to a bed. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Chaplains who are about to leave for their stations have their picture taken with a camera with an automatic timing device. U.S. Army chaplain school, Fort Benjamin Harrison, Indiana

Chaplains who are about to leave for their stations have their picture...

Picryl description: Public domain image of military training, armed forces fort, camp, exercise activity, free to use, no copyright restrictions.

Pittsburgh, Pennsylvania. By using a polarized light apparatus to take pictures of plastic models of turbine nuts and bolts, Dr. Hetenyi, Hungarian-born research engineer at the Westinghouse Electric and Manufacturing Company, has discovered how to make this fastening device up to forty per cent stronger. He found that nuts and bolts with broad shoulders and tapered bodies distribute stress on threads more evenly than do ordinary nuts and bolts

Pittsburgh, Pennsylvania. By using a polarized light apparatus to take...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Mouse-trap armor for caddies - here is the newest safety device seen on California links

Mouse-trap armor for caddies - here is the newest safety device seen o...

Photograph shows caddy Mozart Johnson wearing "the latest safety device for golf courses" fashioned from wire-mesh and worn over the head and upper torso to protect "caddies and ball-retrievers from wild golf b... More

[Title page of Le operazioni del compasso geometrico, et militaire; with device showing walking woman with banner "Bondantie"]

[Title page of Le operazioni del compasso geometrico, et militaire; wi...

Title page in: Le operazioni del compasso geometrico, et militaire / Galileo Galilei. Padova : In casa del' autore, per P. Marinelli, 1606. Published in: The tradition of science / Leonard C. Bruno. Washington,... More

Manly life boat releasing device

Manly life boat releasing device

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Witness sun's defiance to human powers, Washington, D.C., September 8. Senor Adolfo Niebuhr, of Argentine, Dr. Richard Plobet, of Germany, and Dr. Eugen Melchinger, of Germany, witness the failure of Dr. Charles G. Abbott's sun ray machine. The device which is said to be capable of operating half-horsepower steam engine by the sun's heat failed when the concentrated heat proved too much for the soldier connections The men are representatives of their respective countries to the Third World Power Conference which is now being held in this city

Witness sun's defiance to human powers, Washington, D.C., September 8....

A group of men standing next to each other. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Bureau of Standards designs new device for studying water flow through plumbing fixtures. Washington, D.C., March 13. A new type of rate-of-flow meter for studying the rate of variation of flow of water through plumbing fixtures and for use in investigation presenting similar problems has just been designed and built by the U.S. Bureau of Standards with the cooperation of the Plumbing Fixture Manufacturers Research Associateship. Mr. H.M. Eaton, who is in charge of the hydraulics laboratory where the device is installed, is shown in foreground of picture, 3-13-40

Bureau of Standards designs new device for studying water flow through...

Two men working on a machine in a factory, Library of Congress Harris and Ewing collection Title from unverified caption data received with the Harris & Ewing Collection. Gift; Harris & Ewing, Inc. 1955. Gener... More

Bell Aircraft Corp., Niagara Falls, New York. Simple device for curbing absenteeism is this AWOL card put up on the board near the time clock

Bell Aircraft Corp., Niagara Falls, New York. Simple device for curbin...

Public domain photograph of 1930s America, free to use, no copyright restrictions image - Picryl description

Bureau Eng. & Ptg. Printing money: type of motor device, hand press, [1914]

Bureau Eng. & Ptg. Printing money: type of motor device, hand press, [...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

A black and white photo of a truck and a crane, Great Depression. FSA/OWI Photograph

A black and white photo of a truck and a crane, Great Depression. FSA/...

Public domain photograph - United States during the 1930s and 1940s, Farm Security Administration, New Deal, free to use, no copyright restrictions image - Picryl description

Salvage. New York local story. Keys to Uncle Sam's arsenal for democracy. Ranging in size form a tiny jewelcase opener to a massive half-pound brass device used in a French chateau grilled door, a donor turns over to the salvage drive more than 200 keys weighing five pounds, one ounce to Mrs. Mortimer Hess, vice chairman of the Women's Division of the New York City Salvage Committee at its headquarters in the Channing Building. Soon these keys will be on their way to the smelters to refine into new steel and brass to make America's guns and cartridges

Salvage. New York local story. Keys to Uncle Sam's arsenal for democra...

Picryl description: Public domain photograph of the 1930s - 1940s, woman, female portrait, United States, free to use, no copyright restrictions.

Measuring relative humidity by radio. Washington, D.C. June 9. The hair element for measuring relative humidity in radio weather sounding balloons has proved innacurate because of very slow response at the cold temperatures encountered in the upper atmosphere. F.W. Dunmore, Radio Engineer of National Bureau of Standards, has just developed a new device for the U.S.Navy which will overcome this effect and at the same time will not be affected in response by temperature. He is shown in the photograph observing a graph on the recorder being produced by radio signals from an ascending balloon carrying the new device. This is the first record obtained with this new developement and shows a repidity of response much greater than the hair hygrometers Hitherto used. 6/9/37

Measuring relative humidity by radio. Washington, D.C. June 9. The hai...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

[Design drawing for stained glass window with St Lucy with palm leaf and sword; and St Agatha with lily, and torture device(?)]

[Design drawing for stained glass window with St Lucy with palm leaf a...

Public domain image of watercolor painting from British-related collections, free to use, no copyright restrictions - Picryl description

Safety device for blind landing of air-track. Washington D.C. The monitoring device of the air-track blind landing in the above photo tells the man on the ground if all the beams are being sent out correctly if there is any error in transmission of the beams this machine will pick It up immediately and the pilot can be notified to come into the airdrome again while corrections can be made

Safety device for blind landing of air-track. Washington D.C. The moni...

A black and white photo of a man on a telephone, Library of Congress Harris and Ewing collection Title from unverified data on the negative or negative sleeve. Gift; Harris & Ewing, Inc. 1955. General informat... More

Buried trolley tracks salvaged to aid war program. Old tracks for new guns. One of the ways many American cities are responding to Uncle Sam's call for scrap is by pulling out abandoned trolley tracks. This apparatus, developed by an Asheville, North Carolina machine shop operator, is being used to tear out the old buried tracks in his city. With three men, the device can remove twenty-five tons of rail per day

Buried trolley tracks salvaged to aid war program. Old tracks for new ...

Public domain photograph - United States during World War Two, free to use, no copyright restrictions image - Picryl description

Keeping score in the war production drive. 2) Like to mop up on these babies? Well, that's the idea. Above is another suggested War Production Board (WPB) device to enable America's factory workers to know the score in their drive to erase these gentlemen. As plant production draws closer to its goal, Awful Adolf, Bungling Benito and Horrors Hirohito begin to disappear from the face of the blackboard as they will presently disappear from the face of the earth

Keeping score in the war production drive. 2) Like to mop up on these ...

Picryl description: Public domain historical photo of Washington DC during the First World War, free to use, no copyright restrictions image.

Salvage. New York local story. Keys to Uncle Sam's arsenal for democracy. Ranging in size form a tiny jewelcase opener to a massive half-pound brass device used in a French chateau grilled door, a donor turns over to the salvage drive more than 200 keys weighing five pounds, one ounce to Mrs. Mortimer Hess, vice chairman of the Women's Division of the New York City Salvage Committee at its headquarters in the Channing Building. Soon these keys will be on their way to the smelters to refine into new steel and brass to make America's guns and cartridges

Salvage. New York local story. Keys to Uncle Sam's arsenal for democra...

Picryl description: Public domain photograph of the 1930s - 1940s, woman, female portrait, United States, free to use, no copyright restrictions.

Anaconda smelter, Montana. Anaconda Copper Mining Company. Automatic sampler at end of conveyor belt; by this device, which gathers and drops a sample into a hopper, precise information is obtained concerning the content of copper and other metals in the ore

Anaconda smelter, Montana. Anaconda Copper Mining Company. Automatic s...

Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description

[Design drawing for stained glass window with St Lucy with palm leaf and sword; and St Agatha with lily, and torture device(?)]

[Design drawing for stained glass window with St Lucy with palm leaf a...

Public domain reproduction of illuminated manuscript page, free to use, no copyright restrictions image - Picryl description

Farmer loading spreading device with grasshopper poison. Forsyth, Montana

Farmer loading spreading device with grasshopper poison. Forsyth, Mont...

Picryl description: Public domain image of a farmer worker, 20th-century dust bowl, great depression era, free to use, no copyright restrictions.

[The elaborate device of Franz Birckmann, a Cologne bookseller, showing 3 seperate scenes: The Adoration, St. Ursula with the 11,000 virgins, and a boiling cauldron containing 7 Maccabean youths and their mother. In upper corners are 2 shields containing Cologne arms and Birckmann trademark]

[The elaborate device of Franz Birckmann, a Cologne bookseller, showin...

Illus. in: Opera of St. Cyrillus (1520). Reference copy may be in LOT 4966. This record contains unverified, old data from caption card. Caption card tracings: Shelf.

U.S. Naval Academy, Annapolis, Maryland. Studying a testing device

U.S. Naval Academy, Annapolis, Maryland. Studying a testing device

Public domain photograph of college lab, free to use, no copyright restrictions image - Picryl description

[Stereograph of man with device designed for flying]

[Stereograph of man with device designed for flying]

133944S(?) U.S. Copyright Office. Copyright by Underwood & Underwood. No. U-117748. No. 007748.

[Title page of Discorsi e dimostrazioni matematiche, intorno a due nuove scienze; with device showing man picking fruit from tree marked "non Solus"]

[Title page of Discorsi e dimostrazioni matematiche, intorno a due nuo...

Title page in: Discorsi e dimostrazioni matematiche, intorno a due nuova scienze / Galileo Galilei. Leida : Appresso gli Alsevirii, 1638. Published in: The tradition of science / Leonard C. Bruno. Washington, D... More

Dept. of Agric., first device to accurately measure a loaf of bread in cubic centimeters has been prefected by Bureau of Agricultural Economics

Dept. of Agric., first device to accurately measure a loaf of bread in...

Public domain photograph, 1910s-1920s portrait, American, free to use, no copyright restrictions image - Picryl description

Life saving device, 8/17/22 - Glass negative photogrpah. Public domain.

Life saving device, 8/17/22 - Glass negative photogrpah. Public domain...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Demonstrates non-sinkable ship to members of Congress. Adam T. Drekolias, of New York, demonstrating to members of the House Naval Affairs Committee, February 24th, his invention which he claims will keep any ship from sinking, no matter how badly damaged. The invention is a collapsible chamber designed to ? air in the hull of a disabled vessel, even if a ship were completely filled with water. He claims the device would keep its upper deck above the surface, giving the crew a chance for their lives until rescuers arrived. Mr. Drekolias is shown on the left in the photograph

Demonstrates non-sinkable ship to members of Congress. Adam T. Drekoli...

A group of men standing around a table. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Sun refuses to be harnessed, Washington, D.C., September 8. The scheduled exhibition of Dr. Charles G. Abbott's sun ray machine was ruined today because there was too much sun. The intense heat, after being concentrated melted the solder connections. Dr. Abbott, the inventor, then went ahead to explain his device which is said to be capable of operating a half-horsepower steam engine by the sun's heat. The exhibition was held in honor of some of the delegates to the Third World Power Conference which is now being held here

Sun refuses to be harnessed, Washington, D.C., September 8. The schedu...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Measuring relative humidity by radio. Washington, D.C. June 9. The hair element for measuring relative humidity in radio weather sounding balloons has proved innacurate because of very slow response at the cold temperatures encountered in the upper atmosphere. F.W. Dunmore, Radio Engineer of National Bureau of Standards, has just developed a new device for the U.S.Navy which will overcome this effect and at the same time will not be affected in response by temperature. He is shown in the photograph observing a graph on the recorder being produced by radio signals from an ascending balloon carrying the new device. This is the first record obtained with this new developement and shows a repidity of response much greater than the hair hygrometers Hitherto used. 6937

Measuring relative humidity by radio. Washington, D.C. June 9. The hai...

A man sitting at a desk with a typewriter, Library of Congress Harris and Ewing collection Title from unverified caption data received with the Harris & Ewing Collection. Gift; Harris & Ewing, Inc. 1955. Gener... More

Printers' picture gallery. The following device is made up entirely of cuts from the specimen-book of a single- type-foundry in this city. Most of the pictures are current at the South, and are even put by masters into the hands of the slaves ..

Printers' picture gallery. The following device is made up entirely of...

Anti-slavery.; Title. Available also through the Library of Congress web site in two forms: as facsimile page images and as full text in SGML. Printed Ephemera Collection; Portfolio 133, Folder 29.

[Henry Cabot Lodge standing on platform outdoors making a speech; man seated on platform with hearing aid or recording device]

[Henry Cabot Lodge standing on platform outdoors making a speech; man ...

National Photo Company Collection.

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