Patent GB-190201784-A (GB)
Title: Improved Lubricating Means.
Inventor: LLOYD GUY ERNEST
Filed: 1902-01-22
Granted: 1903-01-22
Abstract: 1784. Lloyd, G. E. Jan. 22. Lubricators.-An oscillating pump is arranged for supplying lubricant, such as oil, to any piece describing a path wholly or partly enclosing a space, as in the case of crank-pins, eccentrics, pins of valve gear, and other linkwork. Figs. 1 and 2 show a pump arranged in connection with a connecting-rod end. The pump cylinder 1 and the hollow plunger 2 are each connected to a trunnion 3, 5 working in a socket 4, 6. The socket 4 is fixed to the engine framing, and has an inlet passage for the lubricant, preferably connected with a filter or strainer 16. The socket 6 is mounted on the connecting-rod end, and is provided with delivery chambers 17, 17<a>, communicating directly, or by pipes, with the crank-pin bearing. A pipe 18<c> leads from the chamber 17<a> to the small end of the connecting-rod or other part. The socket 4 is also provided with a discharge chamber or chambers communicating, by pipes, with the main bearings &c. The motion of the connecting-rod causes a combined reciprocating and oscillating motion of the pump parts. The trunnions and sockets are provided with ports so arranged that, upon the outward movement of the plunger, oil is drawn into the cylinder, and, upon the inward movement, it is expelled from the cylinder and forced to the parts to be lubricated. In order to regulate the relative amount of lubricant delivered at the ends of the cylinder, a conical valve is arranged in the trunnion 5 over the end of the plunger 2. The valve or plunger may be adjusted by screwing, so as to vary the size of the opening between the valve and the end of the plunger. The cylinder 1 may be provided with a gland and packing, to prevent leakage past the plunger. The ends of the sockets are closed by discs 7, 7<a>, which may be controlled by springs 8, 8<a>, so as to act as relief valves should the pressure become too great. The tension of the spring 8<a> may be adjusted during running, by means of a wheel 21, centered on the trunnion pin. and having a pin 20<a> adapted to engage an adjusting-nut 20. When applied to an eccentric, the socket 6 is secured to the bottom of the eccentric strap. In another arrangement, the socket 6 is fixed to an intermediate part of the connecting-rod, and communicates with the crank and crosshead pin bearings by means of pipes. The socket 4 is formed with a number of delivery chambers, successively placed in communication with the cylinder by the ports in the socket and trunnion. These chambers communicate by pipes with different parts of the crosshead guides, which are thus intermittently lubricated. The socket 6 may be similarly arranged for supplying lubricant to a slot or cam arranged on the connecting-rod for actuating the valve mechanism. When applied to a reversible engine, the socket 4 may have two inlets and one outlet. One inlet is in use for one direction of rotation, and the other inlet comes into use when the engine is reversed. Upon reversal, the socket 4 has to be moved to a fresh position, and to do this it is mounted on a slide or lever, actuated by and simultaneously with the reversing gear, or it is moved by means of a cam or tumbler which is actuated by the reversing-gear.