Patent GB-286639-A (GB)
Title: Improvements in dumping wagons
IPC: B61D9/02
Filed: 1928-01-30
Abstract: 286,639. Krupp Akt.-Ges., F. March 7, 1927, [Convention date]. Tip-zvagons; hopper wagons.-Relates to dumping-wagons of the kind in which the entire body or a discharge flap only is adapted to be tilted either by a compressed-air gear or by hand gear and in which a toggle mechanism b<3>, a<1> is disposed between an operating-shaft b<2>, Fig. 1, and the moving body or part A so as to assume one of its dead centre positions when the body is in its normal or carrying position. According to the invention the piston rod c<1> of the compressedair gear is provided with a roller c<3> or like actuating member adapted to co-operate with curved surfaces d<1>, d<2> on a member D mounted on the shaft b2 so that at the beginning of a discharging stroke or at the end of the return stroke the toggle is broken or restored. A locking-gear is also provided to lock the body in its discharge position, but is only effective after the tipping has been carried out by the hand gear. In the construction of the compressed-air gear, Fig. 1, the roller c<3> is carried by a pin c<2>, which is movable in a slotted bracket a<2> on the body A and is connected to a pivoted locking-link E provided with a shoulder e<2> adapted to engage a face b<5> of a cam disc b<4> rigid on the shaft b<2>. When the piston rod is forced upwardly the link E is raised and the cam disc b<4> released, while the roller c<3> strikes the curved face d<2> of the member D to break the toggle b<3>, a'. The pin c<2> then reaches the end of the slot a<3> and the tipping movement commences; while in the return movement the roller c<3> engages the curved face d<1> of the member D, thus resetting the toggle and allowing the link E to drop into its locking position. In a modification the roller c', instead of being mounted on the pin c<2>, is mounted on a pivoted link to which the pin c<2> is also connected. The hand operating gear, Fig. 5, comprises a sleeve member F loose on the shaft b<2> and operable by a hand-lever G, the member F being fitted with a double pawl f<2> mounted on a pin f<1>, with a slotted member M adapted to co-operate with a lug n<1> on a pivoted link N which locks the body in the discharge position, and a projection f<3> adapted to engage and lift the locking-link E. For locking the body in the discharge position a shoulder n<4> on the link N engages a face p<1> of a cam disc P rigid on the shaft b<2> at the end of the tipping movement. In operation, the pawl f<2> is arranged, after a slight lost motion, to engage a tooth of a ratchet wheel K fixed to the shaft b<2>. During the lost-motion movement, the projection f<3> lifts the link E and frees the shaft b<2> for subsequent operation by the pawl and ratchet. During the tipping movement, the cam P lifts the link N and finally allows it to drop into its locking position, in which' position the lug n' rests on a shoulder m<2> in the slot of the member M. In the reverse operation, the member M, through the engagement of the parts n<1>, m<2>, raises the link N to free the shaft b<2> against rotation. When the tipping is being effected by the compressed air gear the cam P is rotated and lifts the link N, but, as the sleeve F and member M are undisturbed, no locking of the shaft b<2> in the discharge position by the co-operating parts n<4>, p' occurs.