GB172627A - - Google Patents

Abstract

172,627. Schneider et Cie. Dec. 11, 1920, [Convention date.]. Field carriages.-Relates to carriages having divergible trail beams which, on uneven ground, can assume oblique positions relatively to the carriage-head C, Fig. 4, which supports the training pivot G of the gun. According to the invention, the training pivot G which carries the gun cradle S and the elevating-gear R. T, is adjusted to the vertical position when the carriage is on uneven ground by gears which move the pivot about transverse and longitudinal axes relatively to the carriage-head, or alternatively, the pivot G is adjusted about a transverse axis relatively to the carriage-head which is itself adjustable about a longitudinal axis relatively to the wheel axle. The invention is shown applied to carriages of the kind described in Specifications 167,450 and 167.466, in which twin bent trails are rotatable in bearings c, Fig. 3, on the carriage-head C. In the construction shown in Figs. 3 and 4, the training pivot G is mounted in a member H which is adjusted by a screw-gear N about longitudinal bearing pins J carried by a hollow member K which surrounds the wheel axle A, the member K being itself adjustable in transverse bearings I in the carriage-head C by a screw-gear M. The pin o moved by the screw-gears engages the lower part of the member H through a gymbal bearing p, q. The gun is elevated by a handwheel v<3> actuating a shaft V passing through the pivot G and driving a worm V<1> engaging a wormwheel T<1> keyed to the shaft of the pinions T which gear with the two-part elevating arc R. During travelling, the wheel axle A is supported by bearing springs D and is guided in the member K, but, when firing, the axle is locked to the carriage-head bv screw blocks E. In a modification shown in Fig. 10, the member H is movable relatively to the carriage-head C on transverse pivot-pins I and arcuate guides H<3> by the gear m<2>, the carriage-head itself being adjustable about a longitudinal pin J on the wheel axle by a worm-and-sector gear W, X. The pin J and the cross-levelling gear Y may, as shown in Fig. 15, be readily disconnected to allow the springs D between the carriage C and the axle A to operate during travelling. Fig. 17 shows a further modification in which the cross-levelling is effected by cross-connected screw-gears Z, Z<1> the screws Z of which are attached to the separate portions A<1> of a divided wheel axle. The axle portions A<1> are movable in opposite directions in arcuate guides C<4> in the carriage-head C when a shaft z<5> is rotated to cross-level the carriage. When travelling, the screws Z are disconnected from the axles A' and the axles are connected to the ends of a transverse bearing-spring D by shackles D<3>