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Suction pipe and raw cotton at gin. Lake Dick Project, Arkansas

Suction pipe and raw cotton at gin. Lake Dick Project, Arkansas

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

Mexican day laborer taking the cotton from the truck into the gin through large metal suction tube. Hopson Plantation, Clarksdale, Mississippi Delta

Mexican day laborer taking the cotton from the truck into the gin thro...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Pumping bot examined. Students at Georgetown University Hospital gather around Chester Antos, another student, while they examine a newly devised Emerson suction pressure apparatus used to stimulate circulation in legs and feet when certain diseases threaten to neccessitate amputations. The "boot", invented by Dr. Louis A. Hermann of Cincinnati, induces circulation by alternately increasing and decreasing air pressure. It is considered a consequential physiological development by doctors who examined it here, 11/12/35

Pumping bot examined. Students at Georgetown University Hospital gathe...

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

[Three trees undergoing plant physiology experiments, including demonstration that suction of roots can overcome the force of gravity] / S.G.

[Three trees undergoing plant physiology experiments, including demons...

Illus. in: Vegetable staticks / Stephen Hales. London : W. and J. Innys, 1727, plate 5, p. 88. Published in: The tradition of science / Leonard C. Bruno. Washington, D.C. : Library of Congress, 1987, p. 63.

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

Suction dredge Neversink [sic] - Public domain image of a steam boat

Suction dredge Neversink [sic] - Public domain image of a steam boat

Picryl description: Public domain image of a ship, navy, harbor, maritime photograph, 19th-20th century architecture, free to use, no copyright restrictions.

Member of cooperative association directing suction pipe for elevating cotton from wagon, Lake Dick Project, Arkansas

Member of cooperative association directing suction pipe for elevating...

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

Vacuum shaping machine. Flat carcasses taken from the storage racks are placed in this vacuum machine in which two things happen. First a combination vacuum suction and squeezing action pulls the tire into the shape it will always have in use. Second, an airbag is forced into the inside to provide inside strength for the curing step. Firestone (General) Tires, Akron, Ohio

Vacuum shaping machine. Flat carcasses taken from the storage racks ar...

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

Taking the cotton from the truck into the gin through large metal suction tube. Hopson Plantation, Clarksdale, Mississippi Delta

Taking the cotton from the truck into the gin through large metal suct...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Taking the cotton from the truck into the gin through large metal suction tube. Hopson Plantation, Clarksdale, Mississippi Delta

Taking the cotton from the truck into the gin through large metal suct...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Lufkin, Texas. Southland paper mill. Stock flowing along the screen of a paper machine becomes paper as water is drawn off by suction

Lufkin, Texas. Southland paper mill. Stock flowing along the screen of...

Public domain photograph of life in the United States in the 1930s, free to use, no copyright restrictions image - Picryl description

[Eight-foot mercury barometer and water pumping demonstration from four-story house proving law that height of fluids raised by suction or pressure varies inversely to its specific gravity]

[Eight-foot mercury barometer and water pumping demonstration from fou...

Public domain image of a historic building, 16th-17th century architecture, free to use, no copyright restrictions image - Picryl description.

Member of cooperative association directing suction pipe for elevating of cotton from wagon, Lake Dick, Arkansas

Member of cooperative association directing suction pipe for elevating...

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

Mexican day laborer taking the cotton from the truck into the gin through large metal suction tube. Hopson Plantation, Clarksdale, Mississippi Delta

Mexican day laborer taking the cotton from the truck into the gin thro...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Suction dredge, Culebra Cut, Panama Canal

Suction dredge, Culebra Cut, Panama Canal

Public domain photograph of a ship, free to use, no copyright restrictions image - Picryl description

Taking the cotton from the truck into the gin through large metal suction tube. Hopson plantation, Clarksdale, Mississippi

Taking the cotton from the truck into the gin through large metal suct...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

That washing machine has to last for a long time, so keep it in good condition. Drain it immediately after use, rinse tub thoroughly, remove agitator or suction cups and rinse with clear water

That washing machine has to last for a long time, so keep it in good c...

Picryl description: Public domain photograph of workers, war production, aircraft, airfield, the 1930s -1940s, free to use, no copyright restrictions.