Abstract: A relatively simple toe jack includes a base; a cylinder mounted on the base and carrying a plunger; a load carrying sleeve mounted on the plunger; a load saddle and a load engaging toe on the sleeve; and a two-stage pump carrying a reservoir mounted on the base beside the cylinder, the pump including a handle specifically shaped to fit into a lever which operates the piston of the pump. The plunger is returned to a rest position by a spring mounted in the plunger and connected to the bottom of the cylinder.

Abstract: Sometimes when attempting to remove the draft key from an E-type railway car coupler, it is difficult to connect the key pulling device to the key without disconnecting the trainline. A simple key pulling device which solves this problem includes a pair of parallel hydraulic cylinders, a yoke interconnecting one end of the cylinders, piston rods extending out of such one end of the cylinders, a socket in the yoke, and separate jaws for removable mounting in the socket and for connecting the pulling device to a key, whereby the jaws can be independently mounted on the head of a key and then connected to the yoke, extension of the piston rods against the coupler causing outward movement of the cylinders, yoke and jaws to pull the key from the coupler.

Abstract: Portable, heavy duty jacks used in the railway, mining and construction industries are expensive units including a motor, a pump, a working fluid reservoir and a hydraulic cylinder, all mounted on a wheeled carriage. The jacks are moved to a use location and often left in one position for a lengthy period of time. Thus, it is often necessary to stock a large number of expensive units. A simple solution to the problem involves a single power module including a carriage, a motor, a pump and a fluid reservoir, and separate lift modules including a hydraulic cylinder. A lift module is releasably connected to the power module for moving the module to a use location, where the hydraulic cylinder is actuated to raise a load. The two modules are then disconnected, another lift module is attached to the power module, and the resulting unit is moved to another use location.