More on the Blish Device:
The upper receiver of the Thompson, stripped, and ready for cleaning and lubrication. The firing pin is located inside of the bolt, and is not designed to be removed for normal maintenance. Note that the current production Thompson uses a pure blowback action, with no locking of the bolt. Note also, that there is no Blish device in the current production models. The Blish device was an H shaped piece of brass or bronze which was a part of the original design. It's function was to reduce the cyclic rate of the gun. Such a device is hardly required in a semi auto firearm, and even it's relevance for the full auto version was a matter of debate.
Reassemble of the Thompson is similar to the disassembly process.
http://en.wikipedia.org/wiki/Thompson_submachine_gun
http://www.museedelaguerre.ca/cwm/exhib ... rms-f.aspxThe Thompson Submachine Gun was developed by General John T. Thompson who originally envisioned an auto rifle (semi-automatic rifle) to replace the bolt action service rifles then in use. While searching for a way to allow such a weapon to operate safely without the complexity of a recoil or gas operated mechanism, Thompson came across a patent issued to John Bell Blish in 1915 based on adhesion of inclined metal surfaces under pressure.[8] Thompson found a financial backer, Thomas F. Ryan, and started the Auto-Ordnance Company in 1916 for the purpose of developing his auto rifle. The principal designers were Theodore H. Eickhoff, Oscar V. Payne, and George E. Goll. By late 1917, the limits of the Blish Principle were discovered: rather than working as a locked breech, it functioned as a friction-delayed blowback action. It was found that the only cartridge currently in U.S. service suitable for use with the lock was the .45 ACP round.
The above text translates roughly as:
Fusil automatique Huot-Ross
Joseph-Alphonse Huot créa la Huot-Ross Rifle Company. Huot, ancien employé de la Ross Rifle Company, transforma le fusil Ross de fabrication canadienne en une mitrailleuse légère entièrement automatique. Cette arme ne dépassa pas le stade de prototype et ne fut jamais fabriquée en série.
Carabine automatique
MCG 19940001-791
I am an Internet commando, and I didn't even have to go to Canada! You may all bow down, throw flowers, and burn incense in my honor now.Huot-Ross Automatic Rifle
Joseph-Alphonse Huot created the Huot-Ross Rifle Company. Huot, former employee of the Ross Rifle Company, transformed the Ross rifle of Canadian manufacture into a light completely automatic machine gun. This weapon did not pass prototype stage and was never manufactured in production.
Automatic Carbine
MCG 19940001-791
Sorry sapper740.... All meant in good fun.