New or Improved Means for Stopping and/or Retarding Motion.

摘要

21,280. Okun, M. S. Sept. 30. Brakes.-Relates to a liquid-pressure arrangement for stopping or retarding motion, applicable for tramcars. The pistons 4, 5 are worked to and fro in the cylinders 2, 3 by the action of the working parts to be controlled, here shown as the car axles 17. The cylinders are connected at each end, by means of passages fitted with valves, with an intermediate chamber. When the valves are fully open, the liquid with which the cylinders and chamber are charged circulates freely and the resistance offered to the moving parts is small. As the valves are closed the resistance increases, until when they are shut the movement of the pistons is arrested. The areas on the two sides of the piston may be equalized by the provision of tail-rods. Leakage chambers 52 surround the piston-rods where they emerge from the cylinders; these communicate by pipes 53 with reservoirs which open into the cylinders by means of spring valves and are kept charged with liquid. The valves are worked by levers on their stems, which engage in transverse slots in a rod 32 jointed to hand-levers at the ends of the car ; or by gearing and spindles. A single-cylinder arrangement is also described and illustrated in the Specification.