GB593263A - Improvements in or relating to hydraulic motors - Google Patents

Abstract

593,263. Liquid-pressure engines. SMITH, S. L. May 28, 1945, No. 13334. [Class 69 (ii)] In a hydraulic motor of the kind wherein the piston is actuated by the pressure created when the flow of liquid through a pipe is suddenly checked, a cylinder e and its piston f are adapted to be reciprocated axially, the cylinder co - operating with a fixed seating or port d to control the flow of liquid through the cylinder. The piston is connected by a rod g to the crankshaft i on which is mounted a cam r engaging a mechanism for controlling the movement of the cylinder through a connecting rod j. When the cylinder is in the position shown, liquid flows through the opening b. As the crank-shaft rotates the cylinder is brought into contact with its seating and the liquid builds up . pressure to raise the piston until it reaches the limit of its stroke when the cylinder, and the piston, are moved downwards and the operation is repeated. Should a foreign body lodge below the seating d no damage, can result as the resilience of the rod and its associated mechanism provides a safety device. The seating may be dispensed with and a fixed open-ended cylindrical guide furnished with ports substituted. Specification 397,639 is referred to.