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The classic revolving battery gun is shown in U.S. Pat. No. 125,563 issued to Richard J. Gatling on Apr. 9, 1872. This gun had a stationary housing and a rotor assembly journaled within the housing having 10 barrels and 10 reciprocating bolts. The bolts were cam activated by the rotation of the rotor assembly. The gun fired cased ammunition which was chambered, fired and ejected by the bolt assembly. The first modern version of the Gatling gun is described in U.S. Pat. No. 2,849,921 issued to Harold McC Otto on Sep. 2, 1958. A more recent version is shown in U. S. Pat. No. 3,380,343 issued to Robert E. Chiabrandy et al. on Apr. 30, 1968.
An electric drive system for rotating the cluster of barrels was shown by R. J. Gatling in U.S. Pat. No. 502,185 issued Jul. 25, 1893 as an alternative to the then conventional hand crank. An improvement to the electric motor type revolving battery gun is shown in U.S. Pat. No. 4,386,303 issued to James A. Kleptz on May 31, 1983 wherein he discloses a D. C. motor system for a Gatling gun. Each of these modern guns is similar to the original gun in having a plurality of barrels, chambers and bolts to shoot cased or uncased ammunition.
The object of this invention is to provide an electrical drive system for a Gatling type gun which will:
1. Be of light weight such that one person can carry and operate the weapon;
2. Provide a high rate of fire; and
3. Be driven by a low voltage rechargeable D. C. battery.
A further object of this invention is to utilize only a single firing pin mechanism for a plurality of barrels, thereby reducing weight, simplifying construction and improving reliability of the weapon.
Other advantages, characteristics and particulars of the invention will become apparent from the explanatory description which will follow made with reference to the appended drawings, given merely by way of illustration and in which:
FIG. 1 is a perspective external view of the weapon embodying the invention,
FIG. 2 is a perspective view of the weapon without its external housing,
FIG. 3 is a planar view of the combined firing pin and cam follower,
FIG. 4 is a front planar view of the cam,
FIG. 5 is a cutaway view of the cam taken generally at section A-A of FIG. 4,
FIG. 6 is a planar view of the low voltage rechargeable battery, and
FIG. 7 is a planer view of the firing pin mechanism and cam.
A perspective external view of the weapon embodying this invention is shown in FIG. 1. There are a plurality of barrels 1 held in a fixed relationship to each other by barrel support rings 2, 3 and 4. There is a center drive shaft 5 that is attached to the center of the barrel support rings 2, 3 and 4. There is a forward support grip 6 and the rear support grip 7 which includes a triggering mechanism 8. The support grips 6 and 7 are fixedly attached to the gun housing 9. A low voltage rechargeable battery 10 is attached at the rear of the gun housing 9. Also shown in FIG. 1 is the spent cartridge shell ejection opening 11.
FIG. 2 shows a perspective view of the weapon without the weapon gun housing 9. As can be seen in this view, each of the barrels 1 has a portion of the barrel cut away 12 to receive a round of ammunition. The drive shaft 5 extends past the cut away portion of the barrels 12 and is attached to an electric motor 13. The electric motor 13 is connected to the battery 10 and the triggering mechanism 8 (the connections are not shown). Mounted onto the drive shaft 5 is a cam 15 that interacts with the firing pin mechanism 14.
FIG. 3 is a planar view of the combined firing pin and cam follower 16. The combined firing pin and cam follower has a base 19 to which is fixedly attached a firing pin 17, a cam follower 18 and a retaining clip 20.
FIG. 4 is a front planar view of the cam 15 and FIG. 5 depicts a cutaway view of the cam 15 taken generally at section A-A of FIG. 4. In both FIG. 4 and FIG. 5, the cam cusps 21 and valleys 22 are depicted. FIG. 6 is a planar side view of the low voltage rechargeable battery 10. Although FIG. 4 depicts eight cusps 21 and eight valleys 22, there could be any number of cusps 21 and valleys 22 depending upon the number of barrels 1 employed.
FIG. 7 shows a cutaway view of the firing pin mechanism 14 in its furthest compressed position. The firing pin mechanism 14 consists of a firing pin housing 23, the firing pin 17, the cam follower 18, a firing pin and cam follower base 19, a firing pin spring 24 and the retainer clip 20. The firing pin 17 and the cam follower 18 are fixedly attached to the base 19. In operation, when the triggering mechanism 8 is depressed, an electrical switch is made that causes the motor 13 to rotate, powered by the battery 10. As the motor 13 rotates it turns the drive shaft 5 which in turn rotates the barrels 1 and the cam 15. As the cam 15 rotates the cam follower 18 and the firing pin 17 move backwards and compresses the spring 19 surrounding the firing pin base 19. As the cam follower 18 passes one of the cusps 21 on the cam 15 and falls into a cam valley 22, the cam follower 18 and the firing pin 17 are thrust forward by the compressed spring 24 thereby firing the ammunition (not shown).
The cam 15 has the same number of cusps and valleys as there are barrels 1. As both the cam 15 and the barrels 1 are fixed to the drive shaft 5, the firing pin 17 is always in alignment with the ammunition ready to be fired. Furthermore, since the drive shaft 5 is directly connected to the motor 13, there are no gears required to rotate the drive shaft 5 thereby reducing weight and complexity of existing Gatling type guns.