Ordnance breech mechanism |
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| 申请号 | US13340226 | 申请日 | 1926-09-03 | 公开(公告)号 | US1695728A | 公开(公告)日 | 1928-12-18 |
| 申请人 | US ORDNANCE CO; | 发明人 | TREVOR DAWSON ARTHUR; THOMAS BUCKHAM GEORGE; | ||||
| 摘要 | 263,214. Dawson, Sir A. T., and Buckham, Sir G. T. Sept. 15, 1925. Ordnance breech mechanism. - Relates to power-operated screw-breech mechanism of the kind having a single ram for ejecting the rotation of the screw and the swinging of the carrier, a cam device being provided between the screw and the gun so that the opening movement of the carrier is initiated by the final unlocking rotation of the screw and vice versa. According to the invention, the cylinder E of the ram, Fig. 4, is rigidly attached longitudinally to the gun A immediately in front of the carrier hinge-pin C , and the piston rod e of the ram is connected by a swinging-link mechanism E - - E , to a crank pin D on the transverse screw-operating shaft D. The invention is shown applied to breech mechanism as described in Specification 6739/12, and a ram as described in Specification 205,522 is shown connected by a slider E to the universally-jointed links E - - E . The position of the parts after unlocking rotation of the breech screw is shown in Fig. 6, the link E having passed behind a projection C on the carrier C so that further operation of the ram will swing the carrier open. During the swinging movement of the carrier, the crank-shaft D is prevented from rotation by a catch G, Fig. 14, which is automatically moved behind a lug D on the shaft by a cam slot a on the gun. For hand operation, Fig. 10, the combined links E - - E are removed and attached by their hinge pins D , e to lugs e on the slider E , a projection e engaging between lugs e on the ram cylinder to lock the ram against movement. The hand-operating lever H is then engaged with a radial slot D on the crank shaft D and fastened by a pin H' engaging the hole vacated by the crank pin D . | ||||||
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