Allen Patent 22005
Ethan Allen's Patent 22005 November 9th, 1858 Key Idea A cam-driven cylinder indexing mechanism combined with a pivoted engagement piece and a frame-integrated support pin for the hammer and tumbler,…
Allen Patent 21400
Ethan Allen's Patent 21400 September 7th, 1858 Key Idea A modified center pin to prevent fouling and a protective guards that redirect escaping gases to prevent injury during revolver operation.…
Allen Patent 47688
Ethan Allen's Patent 47688 March 16th, 1865 Key Idea A reloadable, cartridge offering consistent performance and long service life having a specially structured base and internal grooves, improving primer support,…
Allen Patent 31695
Ethan Allen's Patent 31695 March 19th, 1861 Key Idea An integrated machine combining rollers, cutters, and a clamping system to automatically shape, groove, and finish metallic cartridges in a single…
Allen Patent 30109
Ethan Allen's Patent 30109 September 25th, 1860 Key Idea A metallic cartridge with a localized projection (lip) to contain the primer, reducing material use while improving strength and reliability. Patent…
Allen Patent 27094
Ethan Allen's Patent 27094 February 14th, 1860 Key Idea A combined trimming and forming mechanism that processes cartridge cases in sequence, including creating the hollow rim in a single stroke…
Allen Patent 55596
Ethan Allen's Patent 55596 June 19th, 1866 Key Idea Using a forced blast of heat through the inside of gun barrels, combined with reusable clamps, to achieve uniform and efficient…
Allen Patent 27415
Ethan Allen's Patent 27415 March 13th, 1860 Key Idea A mechanized process for forming cylinder notches using controlled indexing and combined pressing and cutting actions, ensuring accurate spacing and consistent…
Allen Patent 18836
Ethan Allen's Patent 18836 December 15th, 1857 Key Idea Using a separate ratchet-and-locking plate attached to the cylinder, combined with a timed catch and lock-pin system, to achieve more accurate…
Allen Patent 16367
Ethan Allen's Patent 16367 January 13th, 1857 Key Idea A combination of a conical cylinder support, a self-acting ignition valve, and a lever-driven rammer, improving sealing, ignition efficiency, and mechanical…