Feeder drive

Claim 2

An at least partly self acting gun which comprises, in combination: a feed drive assembly including a crank means journaled for oscillation, a drive means coupled to said crank means for rotating said crank means an increment first in one direction and then an increment in the other direction, once for each round fired; a feed mechanism having a drive wheel journaled for rotation and which has a plurality of uniformly, radially spaced apart teeth extending therefrom; said crank means having two detents, one of said two detents being adapted to engage and drive one of said plurality of teeth during rotation of said crank means in said one direction, whereby to rotate said drive wheel a predetermined increment in a predetermined direction, the other of said two detents adapted to engage and drive another of said plurality of teeth during movement of said crank means in said other direction, whereby to rotate said drive wheel another predetermined increment in said predetermined direction.

Claim 3

A gun according to claim 1 wherein: said drive wheel is journaled for rotation about a first axis, and has a face which is normal to said first axis and from which said plurality of teeth extend; and said crank means is journaled for oscillation about a secOnd axis which is transverse to said first axis.

Claim 4

An at least partly self acting gun which comprises, in combination: a feed drive assembly including a crank means journaled for oscillation; a drive means coupled to said crank means for rotating said crank means an increment first in one direction and then an increment in the other direction, once for each round fired; a feed mechanism having two, alternatively operable, drive wheels, one of said drive wheels being journaled for rotation in the clockwise direction, and the other of said drive wheels being journaled for rotation in the counterclockwise direction, each of said drive wheels having a respective plurality of uniformly, radially spaced apart teeth extending therefrom; said crank means having two sets of elements for effectively driving said wheels, one of said sets being engageable with one respective wheel, the other of said sets being engageable with the other respective wheel, each of said sets of elements including two detents, one of said two detents being adapted to engage and drive one of said plurality of teeth during movement of said crank means in said one direction, whereby to rotate said drive wheel a predetermined increment in the respective direction, the other of said two detents adapted to engage and drive another of said plurality of teeth during movement of said crank means in said other direction, whereby to rotate said drive wheel another predetermined increment in said respective direction.

Claim 5

An at least partly self acting gun which comprises, in combination: a feed drive assembly including a crank means journaled for oscillation; a drive means coupled to said crank means for rotating said crank means an increment first in one direction and then an increment in the other direction, once for each round fired; a feed mechanism having two, alternatively operable, drive wheels, one of said drive wheels being journaled for rotation in the clockwise direction, and the other of said drive wheels being journaled for rotation in the counterclockwise direction, each of said drive wheels having a respective plurality of uniformly, radially spaced apart teeth extending therefrom; said crank means having two sets of elements for effectively driving said wheels, one of said sets being engageable with one respective wheel, the other of said sets being engageable with the other respective wheel, each of said sets of elements including two detents, one of said two detents being adapted to engage and drive one of said plurality of teeth during movement of said crank means in said one direction, whereby to rotate said drive wheel a predetermined increment in the respective direction, the other of said two detents adapted to engage and drive another of said plurality of teeth during movement of said crank means in said other direction, whereby to rotate said drive wheel another predetermined increment in said respective direction.

Claim 6

A gun according to claim 3 wherein: said two drive wheels are respectively journaled for rotation about a first and a second axis which are mutually parallel; and each has a respective face which is normal to said axis of rotation and from which said respective plurality of teeth extend; and said crank means is journaled for oscillation about an axis which is transverse to said first and second axes.

Claim 7

A gun according to claim 3 wherein, each of said two drive wheels is journaled with a predetermined longitudinal freedom of movement, and further including a switch plate coupled to said two drive wheels and having two alternative stable positions, one of said positions longitudinally moving one of said drive wheels into engagement with its respective detents, and longitudinally moving the other of said drive wheels out of engagement, and the other of said positions longitudinally moving the said other of said drive wheels into engagement with its respective detents, and longitudinally moving said one of said drive wheels out of engagement.

Claim 8

An at least partly self-acting gun which comprises, in combination: a receiver having a longitudinal axis; a barrel extension disposed for recoil and counterrecoil movement in said receiver along said longitudinal axis; a bolt disposed for recoil and counterrecoil movement in said receiver along said longitudinal axis; a feed drive assembly including a crank shaft journaled to said receiver for oscillation about a first axis which is transverse to said longitudinal axis; and a crank shaft drive linkage coupled to and between said barrel extension and said crank shaft for coupling recoil movement of said barrel extension into rotation of said crank shaft in one direction and for coupling counterrecoil movement of said barrel extension into rotation of said crank shaft in the opposite direction; and a feed mechanism having two, alternatively operable, drive wheels, one of said drive wheels being journaled for rotation in the clockwise direction, and the other of said drive wheels being journaled for rotation in the counterclockwise direction, each of said drive wheels having a respective plurality of uniformly, radially spaced apart teeth extending therefrom; said crank shaft having two sets of elements for effectively driving said wheels, one of said sets being engageable with one respective wheel, the other of said sets being engageable with the other respective wheel, each of said sets of elements including two detents, one of said two detents being adapted to engage and drive one of said plurality of teeth during movement of said crank shaft in said one direction, whereby to rotate said drive wheel a predetermined increment in the respective direction, the other of said two detents adapted to engage and drive another of said plurality of teeth during movement of said crank shaft in said other direction, whereby to rotate said drive wheel another predetermined increment in said respective direction.

Claim 9

An at least partly self-acting gun which comprises, in combination: a receiver having a longitudinal axis; a barrel extension disposed for recoil and counterrecoil movement in said receiver along said longitudinal axis; a bolt disposed for recoil and counterrecoil movement in said receiver along said longitudinal axis; a feed drive assembly including a crank shaft journaled to said receiver for oscillation about a first axis which is transverse to said longitudinal axis; and a crank shaft drive linkage coupled to and between said barrel extension and said crank shaft for coupling recoil movement of said barrel extension into rotation of said crank shaft in one direction and for coupling counterrecoil movement of said barrel extension into rotation of said crank shaft in the opposite direction; and a feed mechanism having two, alternatively operable, drive wheels, one of said drive wheels being journaled for rotation in the clockwise direction, and the other of said drive wheels being journaled for rotation in the counterclockwise direction, each of said drive wheels having a respective plurality of uniformly, radially spaced apart teeth extending therefrom; said crank shaft having two sets of elements for effectively driving said wheels, one of said sets being engageable with one respective wheel, the other of said sets being engageable with the other respective wheel, each of said sets of elements including two detents, one of said two detents being adapted to engage and drive one of said plurality of teeth during movement of said crank shaft in said one direction, whereby to rotate said drive wheel a predetermined increment in the respective direction, the other of said two detents adapted to engage and drive another of said plurality of teeth during movement of said crank shaft in said other direction, whereby to rotate said drive wheel another predetermined increment in said respective direction.

Claim 10

An at least partly self acting gun which comprises, in combination: a receiver having a longitudinal axis; a barrel extension disposed for recoil and counterrecoil movement in said receiver along said longitudinal axis; a bolt disposed for recoil and counterrecoil movement in said receiver along said longitudinal axis; a feed drive assembly including a crank shaft journaled to said receiver for oscillation about a first axis which is transverse to said longitudinal axis; and a crank shaft drive linkage coupled to and between said barrel extension and said crank shaft for coupling recoil movement of said barrel extension into rotation of said crank shaft in one direction and for coupling counterrecoil movement of said barrel extension into rotation of said crank shaft in the opposite direction; and a feed mechanism having two, alternatively operable, drive wheels, one of said drive wheels being journaled for rotation in the clockwise direction, the other of said drive wheels being journaled for rotation in the counterclockwise direction, each of said drive wheels having a respective plurality of uniformly, radially spaced-apart teeth extending therefrom; said crank shaft having two sets of elements for effectively driving said wheels, one of said sets being engageable with one respective wheel, the other of said sets being engageable with the other respective wheel, each of said sets of elements including two detents, one of said two detents being adapted to engage and drive one of said plurality of teeth during movement of said crank shaft in said one direction, whereby to rotate said drive wheel a predetermined increment in the respective direction, the other of said two detents adapted to engage and drive another of said plurality of teeth during movement of said crank shaft in said other direction, whereby to rotate said drive wheel another predetermined increment in said respective direction.

Claim 11

An at least partly self acting gun which comprises, in combination: a receiver having a longitudinal axis; a barrel extension disposed for recoil and counterrecoil movement in said receiver along said longitudinal axis; a bolt disposed for recoil and counterrecoil movement in said receiver along said longitudinal axis; a feed drive assembly including a crank shaft journaled to said receiver for oscillation about a first axis which is transverse to said longitudinal axis; and a crank shaft drive linkage coupled to and between said barrel extension and said crank shaft for coupling recoil movement of said barrel extension into rotation of said crank shaft in one direction and for coupling counterrecoil movement of said barrel extension into rotation of said crank shaft in the opposite direction; and a feed mechanism having two, alternatively operable, drive wheels, one of said drive wheels being journaled for rotation in the clockwise direction, the other of said drive wheels being journaled for rotation in the counterclockwise direction, each of said drive wheels having a respective plurality of uniformly, radially spaced-apart teeth extending therefrom; said crank shaft having two sets of elements for effectively driving said wheels, one of said sets being engageable with one respective wheel, the other of said sets being engageable with the other respective wheel, each of said sets of elements including two detents, one of said two detents being adapted to engage and drive one of said plurality of teeth during movement of said crank shaft in said one direction, whereby to rotate said drive wheel a predetermined increment in the respective direction, the other of said two detents adapted to engage and drive another of said plurality of teeth during movement of said crank shaft in said other direction, whereby to rotate said drive wheel another predetermined increment in said respective direction.

Claim 12

A gun according to claim 7 wherein: said two drive wheels are respectively journaled for rotation about a first and a second axis which are mutually parallel; and each has a respective face which is normal to said axis of rotation and from which said respective plurality of teeth extend.

Claim 13

A gun according to claim 8 wherein: said aperture in said tray is less wide aft and more wide forward, whereby the round when disposed aft on said aperture is supported thereby and when forward is passed through said aperture; and further including means for deflecting the round towards said gun barrel axis as the round is moved forwardly along said tray aperture by said bolt head portion.