US1312048A

US1312048A - Cartridge feed mechanism especially

Info

Publication number: US1312048A
Authority: US
Publication date: 1919-08-05
Anticipated expiration: 1936-08-05

Description

R. REDPATH.

CARTRIDGE FEED MECHANISM ESPECIALLY APPLICABLE FOR AUTOMATIC GUNS.

APPLICATION FILED OCT-10. 1911.

1 ,312,048. Patented Aug. 5,1919.

4 SHEETS-SHEET R. REDPATH. CARTRIDGE FEED MECHANISM ESPEClALLY APPLICABLE FOR AUTOMATIC GUNS.

APPLICATION FILED OCT- 10. 191 I. '1 ,3 1 2,048, Patented Aug. 5, 1919.

4 SHEETS-SHEET 2.

THE COLUMBIA PLANOGRAPH c0.. WASHING-TON, D. c.

R. REDPATH.

CARTRIDGE FEED MECHANISM ESPECIALLY APPLICABLE FOR AUTOMATIC GUNS.

APPLICATION FILED OCT- 10, 1917.

Patented Aug. 5 1919.

4 SHEETSSHEET 3.

R. REDPATH. CARTRIDGE FEED MECHANISM ESPECIALLY APPLICABLE FOR AUTOMATIC GUNS.

APPLICATION FILED OCT. 10, 1917. 1,312,048. Patented Aug. 5,1919.

4 SHEETS-SHEET 4.

UNITED STATES PATENT oEEIcE.

ROBERT REDZPllTl-I, OF COVENTRY, ENGLAND, ASSIGNOR TO THE COVENTRY ORDINANCE WORKS, LIMITED, OF COVENTRY, ENGLAND.

Specification of Letters Patent.

Patented Aug. 5, 1919.

Application filed October 10, 1917. Serial No. 195,736.

To all whom it may] concern:

Be it known that 1, ROBERT REDPATH, a subject of the King of Great Britain, residing at Ordnance Works, Coventry, England, have invented a new and useful Improvement in Cartridge-Feed Mechanism Especially Applicable for Automatic Guns, of which the following is a specification.

This invention relates to improvements in cartridge feed mechanism especially applicable for automatic guns.

The invention is illustrated by the accompanying drawings which show it as adapted to the automatic gun described in my application, Serial No. 195,735, filed October 10, 1917, the parts being numbered as in the drawings of that specification. Figure 1 is a vertical section of the magazine and part of the gun, Fig. 2 is a rear view and Figs. 3 and 4 show the feed cams in two positions.

31 is a magazine secured above the cradle 2 and adapted to hold five rounds one above the other. The rounds are pressed toward the gun by a lever 32 pivoted to the front of the magazine at 33 and having its short arm actuated by a spring inclosed in a telescopic casing 34 pivoted to the cradle, so that the rounds are pushed toward the gun. When the rear of the barrel 1 has moved forward sufficiently far after its rearward movement due to recoil, the lever 32 pushes the rear of the lowest round down as far as it is allowed to move by ledges 35 one on each side of the magazine. This, however, is sufiicient to bring the rim into the path of the front of the breech block 3 which has been retained in its rearward position while the barrel 1 has been run out. vAs the breech block begins to move forward a groove 38 on the right of the block 3 actuates a spring plunger 39 to lift a rod 40 in guides 41; the top of the rod is slotted at 42 to embrace a pin 43 upon a quadrant 44 fast on a spindle 45 7 this quadrant has upon it teeth meshing with Ward the two cams 52 are moved quickly from the position shown in Fig. 3 to that shown in Fig. 4 to lower the projectile, so that the continued movement of the breech block can thrust it into the chamber, and this continued movement also, owing to the shape of the groove 38, returns the cams 52 to the position shown in Fig. 3, so that they catch the projectile of the next round. It will be seen from Figs. 3 and 4 that the cams are so shaped that they prevent the second round from descending during the greater part of their movement. The groove 38 is so shaped that no movement of the plunger 39 takes place on recoil.

When the last round leaves the magazine,

a spring in a box 62 presses against an arm 63 which projects into the bottom of the magazine and has hitherto been prevented from movement by the presence of the last round. This arm is fast on a spindle 64 to which is fast another arm 65 pivoted to the top of a rod 66, the lower end of which is pivoted to an arm 67 on a longitudinal shaft 68 journaled in bearings 69 on the right of the cradle 2. At the rear of this spindle is 5. toe 70 which is thus raised into the path of a projection 71 on a lug 20, depending from a sleeve 5 in the breech block 3, so that the breech is held open until a fresh charge has been placed in the magazine, whereupon the toe can be moved out of the path of the projection by means of a handle 7 2 on the arm 65.

What I claim is 1. In cartridge feed mechanism, a magazine adapted to contain a number of cartridges, a pair of longitudinal spindles arranged one on each side of the magazine, a toothed quadrant upon each spindle, a transverse rack meshing with each quadrant, a

lever pivoted to the two racks, a feed cam fast on the forward end of each spindle and adapted to support the cartridges in the magazine and to move them toward the gun one at a time and means for rotating one of the spindles.

2. In an automatic gun, a magazine adapted to contain a number of cartridges, a pair of feed cams adapted to support the cartridges, means for turning the cams simultaneously in opposite directions, an arm adapted, when the last cartridge has left the magazine, to project into the magazine, a spring adapted so to project the arm into the magazine, a breech block capable of sliding movement along the axis of the gun, a longitudinal shaft adapted to retain the'block in its rearward position and means whereby the movement of the armrotates the shaft.

3. In an automatic gun, a magazine adapted to contain a number of cartridges, a pair of longitudinal spindles arranged one at each side of the magazine, a toothed quadrant on each spindle, a transverse rack meshing with each quadrant, a lever pivoted to the racks, a feed cam on the forward end of each spindle and adapted to support the cartridges in the magazine and to move them 15 toward the gun one at a time, a breech block copies of this patent may be ebtained for capable of sliding movement along the axis of the gun, means whereby the first part of the forward movement of the breech block rotates one'of the spindles, an arm adapted, when the last cartridge has left the magazine, to project into the magazine, a spring adapted so to project the into the magazine, a longitudinal shaft adapted to retain the block in its rearward position and means whereby the'movement of the arm rotates the shaft. V

In testimony thatI claim the foregoing as my invention I have signed my name this 23rd day of August,'1917.

' ROBERT vREDPATH.

five cents each, by addressing the Commissioner of Patents, Washington, D. c,