| 摘要 |
740,867. Vehicle brakes. DISTINGTON ENGINEERING CO., Ltd. Nov. 5, 1954 [Nov. 5, 1953], No. 30611/53. Class 103 (1). In brake-operating gear for mine cars and other rail-borne vehicles, movement of an actuating lever 1, pivoted on one end of the vehicle body at 2, in a transverse direction, causes application and release of the brake. In the inoperative position of the brake illustrated, the lever 1 is in its central vertical position and movement of the hand lever 14 or 15 from either side of the vehicle will pivot the lever 1 to its brake-applying position in a transverse direction ; the appropriate face of a spring-loaded pawl 5 and the rack-teeth 6a, 7a affording a ratchet action. Movement of the actuating lever 1 to either side of its central position, as described above, will move the appropriate bellcrank lever 18, through appropriate chain 17, to move the appropriate pull-rod (not shown) forwards, thereby rotating shaft 22 and causing push-bar 23 to force brake beam 24 rearwards against spring action to apply the brake shoes 2 to the wheels. In order to move the actuating lever 1 back to its central position to release the brakes, the pawl 5 must be positively disengaged from the rack by depressing the outer end of either hand lever 14 or 15, thereby pivoting the hand lever 14 or 15 about its pivotal connection, 13 or 12 respectively, with the plate-like upper end 1a of the actuating lever 1 and raising the pawl 5 against the action of a compression spring housed in container 11.
|
