Патент USA US2121030код для вставки
June 21; 1938. s. G. GREEN ‘GLAND ADJUSTING-MECHANISM 2,121,030 Filed Dec. 18, 1956 a 8 8 7 /0///2 /6‘/36 Invent or‘ E-amual 13-511211 EWM?/EOMZ Attur'ne 2,121,030 Patented June 21, 1938 UNITED STATES PATENT OFFICE 2,121,030 GLAND‘ ADJUSTING MECHANISM Samuel G. Green, Gray, Ga. ' Application December 18, 1936, Serial No. 116,551 1 Claim. (Cl. 89-44) (Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) II. A packing I2 is held against the ring II by The invention described herein may be manu factured and used by or for the Government for an elongated gland l3 which is inserted into the governmental purposes, without the payment to passage from the front end of the trunnion block and is threaded to a tubular extension M of the me of any royalty thereon. 5 This invention relates to a gland adjusting block. When the gun is completely assembled the front end of the gland is disposed within a mechanism. jacket l5 which is threaded on the extension. l4 In a water cooled machine gun having a recoil ing barrel it is necessary to provide packing for and contains a ?uid for cooling the gun barrel. An annular row of teeth I6 is formed on the the movable joints in order to prevent leakage of 10 the cooling medium which is contained in a outer surface of the gland adjacent its rear end 10 jacket surrounding the barrel. In the Browning and when the gland is threaded in the block to type of machine gun the packing for the breech con?ne the packing I2, the teeth are generally end of the barrel is held in place by a gland that in line with an aperture l‘! in the under side of can only be adjusted after removing the water the block. This aperture leads into a longi tudinally extending slot l8 in the under side of 15 jacket. The purpose of this invention is to arrange the the block. A spring detent 19 carried by the block extends through the aperture l1 and engages the barrel mounting so that the gland which is posi teeth on the gland to lock the gland in position tioned internally of the assembly may be ad of adjustment. I justed from an external position. When it is desired to rotate the gland to vary A further object is to provide a simple and em 20 cient means for locking the gland in adjusted the compression of the packing the detent I9 is moved out of locking engagement with the teeth, position. To these and other ends, the invention consists and a tool, such as a screw driver, is inserted through the aperture, brought into engagement in the construction, arrangement and combina 25 tion of elements described hereinafter and pointed with the teeth, and then moved tangentially of the gland to impart rotational movement to the out in the claimv forming a part of this speci?ca gland and regulate the compression of the pack tion. ing l2. . A' practical embodiment of the invention is il lustrated in the accompanying drawing, wherein: _ In the modi?cation shown in Fig. 4 the gear teeth 20 on the gland 2| are engaged by a pinion 0 Fig. l is a longitudinal sectional View of a por 30 tion of a machine gun showing the gland and 22 which is mounted on a shaft or pin 23 carried gland locking means. by the trunnion block 24. The pinion is held Fig. 2 is a view in elevation and partly in sec against rotation by a spring detent 25 similar to tion of the gland. that shown in Fig.1. Fig. 3 is a sectional view on the line 3—3 of 35 35 I claim: Fig. 1. Fig. 4 is a longitudial sectional view of a modi ?ed form of the invention; and Fig. 5 is a sectional view on the line 5—5 of 49 Fig. 4. The machine gun illustrated in the drawing is of the Browning type and comprises a receiver 5 having in its front end a trunnion block 6 formed with a passage 1 for receiving a gun barrel whose 45 breech end is slidably supported in the bearing portion 9 of the block. This arrangement is simi lar to a cylinder and piston construction. The passage forwardly of the bearing portion 9 is enlarged and spaced from the barrel and 50 forms an annular shoulder 10 for seating a ring In a gun, a receiver having a bearing, a jacket for a cooling liquid on the front of the receiver, a gun barrel slidably supported in the bearing of the receiver and extending forwardly through the jacket, a packing between the barrel and receiver as and positioned forwardly of the bearing to estab lish a liquid seal, a gland threaded in the receiver to establish a liquid seal and extending rearwardly to con?ne the packing, teeth on the outer side of the gland adjacent its rear end, and said re as ceiver formed with an aperture giving access to the teeth of the gland from the exterior of the receiver. SAMUEL G. GREEN.