Drop Down Barrel Firearm Lang & Jeffries Original Patent Lithograph 1888
On this original linen-backed lithograph from 1888, J. Lang & A. Jeffries patented an action-breeched drop-down barrel gun. This patent is for an ejecting mechanism for drop down guns. The ejector leg is operated by the spring, which, when the gun is loaded, engages with the sear. As the hammer falls, the projection upon it forces the slide forward, and thus when the barrels drop the projection on the slide trips the sear and releases the ejector spring.
All patent lithographs sold by Maymont Group are 100% ORIGINAL.
These documents are NOT reproductions or posters (patent art).
These are the original lithographs found in books obtained from the Patent and Trademark Office directly.
In the 1800's and early 1900's, inventors would submit a detailed drawing of the invention and/or improvements to the patent and trademark office. Once received and if approved, the Patent office would then send a letter of confirmation to the inventor and begin to take that drawing and etch it into stone in order to create and print this linen-backed lithograph. These documents are the original hard copies that were created by the patent office's artists, and act as patent examiner reference material. With that being said, these are 100% original and are the only physical copies in existence.
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