Antique 1800s US Patent Office Firearm Drawings & Text Lot Gatling & Revolvers For Sale

The United States Patent and Trademark Office (USPTO) hosts a searchable archive of historical patents. Because these are utility patents from the late 19th century, the easiest way to view them directly with their full text and clean diagrams is through the Google Patents repository.
Here is the exact information you can use to pull up each document:1. William Mason Revolving Fire-Arms (Colt SAA)• Patent Number: 158,957
• Issue Date: January 19, 1875
• Significance: This is a core foundational patent for the famous Colt Single Action Army revolver, detailing improvements to the cylinder-ejector and housing assembly.
• Search Context: Search US158957A on Google Patents.2. Richard Jordan Gatling Machine Gun• Patent Number: 502,185
• Issue Date: July 25, 1893
• Significance: Created by legendary inventor R. J. Gatling, this document covers key mechanical refinements to the feeding and multi-barrel firing system of the iconic Gatling Gun.
• Search Context: Search US502185A on Google Patents.3. Daniel B. Wesson Revolving Firearm (Smith & Wesson)• Patent Number: 615,117
• Issue Date: November 29, 1898
• Significance: Authored by D. B. Wesson (co-founder of Smith & Wesson), this invention describes a specialized barrel-catch or latch mechanism intended to make top-break revolvers safer and more secure.
• Search Context: Search US615117A on Google Patents.4. J. H. Wesson & J. L. Hobbs Safety Device• Patent Number: 635,705
• Issue Date: October 24, 1899
• Significance: An automated internal safety lock mechanism for revolvers, preventing accidental discharge unless the trigger is explicitly pulled.
• Search Context: Search US635705A on Google Patents.
(Note: The first image showing "The Colt Automatic Gun" schematic appears to be from a factory technical manual or a broadsheet print rather than a standard single-page patent cover, but it heavily references the design architectures of John Browning's early machine gun systems.)