Drive for a machine gun
AssigneeGeneral Electric Company
InventorVictor J. Forrester
Life of this patent
Estimating the term…
Abstract
This invention provides the provision of a motor, whose output shaft is fixed to a pinion gear, meshed with two mutually opposed driven pinion gears, each carrying a respective cam roller, which alternatively enter and exit a cam surface on a cam follower, which is fixed to a second shaft, to oscillate said follower and said second shaft, and a first sector gear which is fixed to said second shaft and meshed with a second sector gear, which is axially fixed to the rocking lever in the drive linkage of a machine gun. Alternatively, the first sector gear is meshed with a second sector gear formed on the rocking lever.
Claims4
A machine gun comprising:
- a receiver;
- a pair of gun barrels fixed to said receiver;
- a pair of operating and gunbolt mechanisms disposed in said receiver for loading, locking and firing each of said gun barrels respectively;
- a rocking lever coupled to and between said operating mechanisms for driving said mechanisms 180.degree. out of mutual phase;
- said rocking lever journaled for oscillation about a central axis;
- and
- external drive means coupled to said rocking lever for reciprocating said lever about said axis, including:
- a motor driving a pinion gear;
- said pinion gear meshed with and driving two mutually opposed gears, respectively journaled for rotation about a common axis, in opposite directions of rotation;
- a cam follower having a cleft cam surface disposed between said two opposed gears and journaled for oscillation about an axis to and between two angularly spaced apart dispositions;
- and
- two cams, each carried by a respective one of said two opposed gears;
- one of said cams adapted to enter said cleft at one of said dispositions and to swing said follower to the other of said dispositions and to exit said cleft, and
- the other of said cams adapted to enter said cleft at said other of said dispositions and to swing said follower to said one of said dispositions and to exit said cleft.
Dependencies are inferred from the claim text.