US1355388A - Westminster - Google Patents

Description

A. T. DAWSON AND G. T. BUCKHAM.

ORDNANCE.

APPLICATION FILED JULY 9,1919.

Patented Oct. 12, 1920.

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ARTHUR TREVOR DAWSON AND GEORGE THOMAS BUCKHAIVI, OF' WESTMINSTER,

LONDON, ENGLAND, ASSIGNORS TO ENGLAND.

VICKERS LIMITED, OF WESTMINSTER,

ORDNANCE.

Application filed July 9,

To all whom it may concern.

Be it known that we, Sir ARTHUR Tnnvor. Dawson, knight, and Sir Grnonon Trror'ms BUGKHAM, knight, both subjects of the King of Great Britain, residing at Vickcrs House, Broadway, YVestminster, in the county of London, England, have invented certain new and useful Tinprovements in or Relating to @rdnance, of which the following is a specification. 1

This invention relates to ordnance in which the barrel recoils on slides or guides on the cradle and is particularly applicable to such ordnance in which the barrel has lateral keys or fins and the slides or guides are constituted by grooves in which the said keys or fins work.

According to the invention we provide an improved device for lubricating the slides or guides this device comprising suitably formed pads or other members which are supplied'with lubricant and which brush over or move in contact with the bearing surfaces of the slides or guides during the recoil and run-out movements of the gun. The said pads, which may conveniently be made of felt, may be carried by metal structures or castings attached in any suitable manner to each side of the barrel and may be disposed in recesses communicating'by passages with lubricant chambers forming part of the castings, these chambers being filled or partly filled with a suitable lubricant such as a mixture of oil and graphite which by gravity is supplied through the said passages to the recesses and thus reaches the pads. V

In order that the said invention may be clearly understood and readily carried into effect, the same will now be described more fully with reference to the accompanying drawings in which V Figure 1 is a side elevation of a gun with part of the cradle in section, showing more or less diagrammatically a constructional form of our improved lubricating device, Fig. 2 is a plan of Fig. l with part of the gun barrel removed and with part of the cradle shown in section, and,

Fig.' 3 is a section taken approximately on the line 3, 3 of Fig. 2 and drawn to an enlarged scale.

A is the gun barrel and A is the cradle which in the example shown has longi Specification of letters Patent.

Letters Patent of the United States is Patented 0a. 12, 1920.

Serial No. 309,725.

tudinal grooves a, a in which work lateral keys or'fins on the barrel, one of these keys being shown at a in Fig. 1. B, B represent the aforesaid metal castings each attached to the barrel by a dowel pin 72 and to the tank D hereinafter referred to by a screw wall of the groove ct and the other with the lower wall of the groove, thereby effec tively lubricating both the bearing surfaces with which each key moves in contact. The improved lubricating device is shown as being used in conjunction with ordnance provided with a liquid reservoir or tank D for the recoil or brake cylinder as described in the specification of one of our patent applications filed concurrently herewith, the said reservoir having lateral keys or fins d, d which also work in the grooves a a;

the aforesaid castings in this case extend from the said reservoir or tank to the keys on the barrel and abut at their front ends against the rear part of the reservoir or tank and at their rear ends against the front surfaces of the keys. The aforesaid pads and the lubricant chamber are preferably as shown arranged at or near the center of the castings and the portions of the latter situatedin front of and behind these pads are formed with lateral projections 6*, 6* fitting within the grooves a, a, in the cradle for the purpose of excluding dust from these grooves.

What -we claim and desire to secure by 1. In ordnance, the combination with gun barrel and the cradle having su"' on which the barrel slides, of struct ried by the barrel, lubricant chamb "W ing part of said structures and which are carried by said structures supplied with lubricant from said for automatically lubricating said during the recoil and run-out movem-nts of the barrel.

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2. In ordnance, the combination with the gun barrel and the cradle having surfaces on which'the barrel slides, of structures connected to the barrel one on each side thereof, lubricant chambers forming part 01"? said structures, absorbent pads which are sup plied with lubricant "from said chambers and which move in contact with said surfaces on the cradle during the recoil and run-out movements of the barrel, and means for carrying said pads in said structure.

3. In ordnance, the combination with the gun'barrel, lateral keys on the barrel, and the cradle having longitudinal grooves in which said keys work, of structures connected to the barrel one on each side thereof, lubricant chambers forming part or" said structures, absorbent pads of which some are in contact with the upper walls of said grooves and the others are in contact with the lower walls and which are supplied with lubricant from said chambers and means for carrying said pads in said structures.

l. In ordnance, the combination with the gun barrel, lateral keys on the barrel, and the cradle having longitudinal grooves in which said keys work, of structures connected to the barrel one on each side thereof, lubricant chambers forming part of said structures, absorbent pads of which some are in contact with the upper walls of said grooves and the other are in contact with the lower walls and which are supplied with lubricant from said chambers, means for carrying said pads in said structures and lateral projections on said structures extending from said. pads to the keys on the barrel and fitting within the grooves in the cradle.

In testimony whereor" we affix our signatures.

ARTHUR TREVOR DAXVSON. GEQRGE THOMAS BUCKHAM.

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