In addition to the described traps and self-arrows, there are options for mechanical and fire flamethrowers, fire self-arrows shooting arrows, as well as pneumatic self-arrows.
Variants of mechanical and firearms flamethrowers, gunshot arrows shooting arrows, pneumatic gunshots, general overview.
The simplest guarded mechanical flamethrower is a bucket of gasoline suspended and wary on a branch or lintel of a door. The bottom should be tied to a branch. In this case, burning gasoline literally spills over his head. A bundle of matches with a grater sandwiched between them must be tied to the bow of the bucket. Grater or box tied to a branch. Similarly, you can alert the bucket and near the door.
Another version of mechanical flamethrowers is a design that resembles a hand pump on a butt with an elastic band or a bow; on the above construction, a torch is placed in front of the barrel of the hose that ignites from the guard mechanism. The torch fire burns the thread holding the trigger of the flamethrower.
Designs of fire flamethrowers can also be a pipe closed at one end, with a slowly burning propellant composition (pressed gunpowder, roll soaked with nitrate paper, etc.). The propellant is separated from the combustible mixture by a piston. Next is a liquid combustible mixture and a plug with a small hole for the exit of the last.
The propellant charge does not come into contact with a combustible liquid and is ignited separately by a torch, as in the previous version. In another embodiment, a firearm (high-explosive) flamethrower is a tube closed at one end, in the breech of which there is a sealed explosive powder charge. The piston may be purely rudimentary or absent altogether.
The remainder of the pipe is filled with a combustible mixture, preferably thickened. From the open end, the pipe is closed with a knockout plug. In this embodiment of the flamethrower, ignition of a missile liquid from a propellant charge is possible, for this purpose it is possible to mix large magnesium or aluminum shavings or pieces of pressed powder into it.
Pneumatic Throwing Weapons.
Pneumatic throwing weapons are of two types. In the first, the pressure is created by the piston in the chamber of large diameter, then the compressed air passes into the chamber of smaller diameter (barrel) and pushes the bullet out. In the second, compressed air is already in the cylinder and from there it exits into the barrel and pushes the bullet out. The first option is most preferred for self-arrows due to the ease of manufacture.
The first large-diameter tube is attached to the butt of a conventional mechanical crossbar with a bow or rubber. A piston is inserted into it, which pushes this bow. From the muzzle end of the first pipe, a second of smaller diameter (barrel) is inserted. In the breech of the barrel, an element restricting the advancement of the bullet into the large tube or a small narrowing is installed, or the thinnest wire is pulled.
Winding a strip of paper impregnated with glue, an insulating tape or an adhesive tape bring the outer diameter of the breech to the inner diameter of the first pipe and insert the barrel into it. With a sufficiently large caliber, powerful bow, such a design has sufficient lethal force, even a round bullet, not to mention the small feathered arrows.
Airguns of the second type are very inconvenient to guard. Firstly, because it is very difficult to make them. Secondly, because the air quickly leaves the cylinder with compressed air through defects in valves and gaskets, and the watchdog time will be very short. There are two valve options in the diagram. The first is cylindrical, the second is flat. The second option has the greatest sharpness and is suitable for the manufacture of pneumatic mortars and grenade launchers.