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Patent model for printers' quoins
CC0 · no rights reserved

Patent model for printers' quoins

Torsch, Edward L. · ca 1879 · metal (overall material)

From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.

About this work

This patent model demonstrates an invention for quoins that were adjusted by means of concentric projecting spirals on one half, working on concentric grooves in the other. The invention was granted patent number 223192.

National Museum of American History’s own description
Subjects
PatentsFrame, Picturemanufacture, printers quoinsModelsWork and Industry: Graphic Arts
Credit linePatent model for printers' quoins. ca 1879. Torsch, Edward L.. National Museum of American History. CC0.
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