Miscellany -- Mr. Bramah's patent lock ; Mr. Rowntree's patent lock / [...] del. ; Lowry scul.

Print shows views of lock, key, and locking mechanism for two types of locks.

Illus. in: The cyclopædia; or, Universal dictionary of arts, sciences, and literature. 1st American ed. Philadelphia : S. F. Bradford; [etc., etc., 1810-1824].
This plate: Published as the Act directs, 1814, by Longman, Hurst, Rees, Orme & Brown, Paternoster Row, London, Plate XXI.
Published in: The tradition of technology : Landmarks of Western technology ... / Leonard C. Bruno. Washington, D.C. : Library of Congress, 1995, p. 199.