User:Neptune-kalakh/sandbox

Ferdinand Mannlicher’s Model 1885 Semi-automatic rifle design was a failure, never seeing anything even resembling mass production. However, it was a failure which in many way set the stage for a huge number of the machine guns that would follow for the next several decades, including the famous Browning Machine Guns family. In fact, this 1885 semiauto had influence and impact far beyond its level of recognition today. It was a design doomed to fail despite Mannlicher’s formidable design talents, simply because the cartridge he based it on was the M1867 11×58mmR Austrian black powder round used in the Werndl rifles. Self-loading weapons would not become truly practical in any form until the invention of smokeless powder, which drastically reduced the amount of fouling and residue from each shot. However, Mannlicher was able to at least make a reasonable attempt despite the use of black powder, and he was the first to do so.

The 1885 design (not to be confused with Mannlicher’s model 1885 straight-pull bolt action rifle) was a recoil mechanism with a separate locking “tong”. As with all recoil-operated designs, the barrel and bolt were locked together at the moment of firing, and remained locked together as they both recoiled rearwards. After a certain amount of travel, in this case about 1.25 inches (32mm) the bolt unlocks and continues rearward which the barrel stops. The locking mechanism in the 1885 Mannlicher is a fork-looking block, labeled #3 in the diagram below. It is pinned to the barrel and able to pivot up and down. When upward, it locks into a cutout in the bottom of the bolt (the bolt is #5 below, and the cutout area is #4). As the bolt and barrel move back, the lower fork of the locking block will eventually hit item #1, an angled projection that forces it downward, unlocking the bolt. Once separated from the barrel, the bolt is able to eject the empty case from the action, and a new cartridge drops down in front of it from the magazine (which is gravity-fed and has no spring). The main recoil spring then pushes the bolt forward, pushing that new cartridge into the chamber. As it moves forward, the hook on the bottom of the bolt (item #2) hits the upper fork of the locking block and forces it into the upward and locked position, thus making the system ready for another shot.