How the Air Rifle Works
The operation of the No. 25 pump-action Daisy air rifle, which is shown at A in Fig. 9, is like this: when the plunger is retracted by pulling back the slide, the mainspring is compressed and the plunger is made to engage the trigger; then the slide, or handhold, is returned to its normal position. When the trigger is pulled and the plunger released the action of the mainspring pushes the plunger forward and compresses the air between the plunger and the abutment.
During the action of loading, the air-tube, which telescopes inside of the shooting barrel, is withdrawn and permits a bullet to drop from the magazine into the shooting barrel. After the gun is fired the air that is compressed passes through a small hole at the back of the air-tube and enters directly behind the bullet. The shooting, or true barrel, is swaged, that is, pressed, directly in front of and behind the point where the bullet enters the barrel and the bullet is kept from rolling out by this means.
When the plunger rushes forward the air-tube pushes the bullet through the swaging in the barrel thus making all the bullets of the same size. The air in this kind of a gun is compressed after the trigger is pulled.
Collins, A. Frederick. Shooting, for Boys,. New York: Moffat, Yard and, 1917. Print.
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