GB340638A - Improvements in or relating to lubricating systems - Google Patents

Abstract

340,638. Lubricating. WHITE, A. E., 5, Quality Court, Chancery Lane, London.- (Bowen Products Corporation, Auburn, New York, U.S.A.). Oct. 10, 1929, No. 30763. [Class 12 (iii).] Controlling flow of lubricant; filtering lubricant.- Lubricant is supplied to the bear ngs of a motor-vehicle chassis or other machine from a common pressure source through metering units 28, Fig. 3, containing plugs 33 of porous ceramic material through which the lubricant passes. The lower end of each plug 33 is pressed against a gasket 31 provided with a central discharge hole 32. The several units are identical except as regards the size of the holes 32, which determine the distribution of the lubricant. As shown, a branch pipe 37 leading from the main supply pipe is connected to each unit by a coupling nut 38 which also serves to press a disc 34 against the plug 33. The disc is adapted to engage a shoulder 29 in the body 28 so as to limit the pressure which can be applied to the plug. The lower surface of the disc 34 is formed with grooves 35 radiating from the central opening which receives the pipe 37, so as to distribute the lubricant over the upper surface of the plug. The plug 33 acts also as a filter, the sediment collecting in the space around the plug. In a modification, the ceramic plug is held against a grooved shoulder in the body by an apertured plug inserted in the lower end of the body. Single-acting piston pumps ; diaphragm pumps ; valves, arrangement of ; strainers.-The lubricant is supplied by a pump comprising a cylinder 7, Fig. 1, mounted in a reservoir 1 so as to be capable of slight axial movement. An inturned flange 8 at the lower end of the cylinder is adapted to rest on a gasket 9 mounted on an outlet fitting 10 containing a filter disc 16 of porous ceramic material pressed against a gasket 14 by a spring 15. The piston 17 is raised by depressing a lever 22 engaging under a head 26 on the piston rod 6, and is depressed by springs 21. At the commencement of the upward movement, the cylinder moves up slightly with the piston, leaving a small opening between the flange 8 and gasket 9 for entry of lubricant to the cylinder. When the piston is depressed, the cylinder moves down to close the opening and lubricant is discharged through the filter 16 into the discharge pipe 12. In a modification, a supply pump is actuated automatically by the variations in vacuum in the induction manifold of an internal combustion engine. Lubricant flows from a reservoir 39, Fig. 54, through a ceramic filter 46 clamped over openings 45a in a dividing plate 45. A diaphragm 52 is clamped at the edge between the plate 45 and a bottom plate 53, the space between the diaphragm and the plate 53 being connected to the induction manifold by a pipe 57<1>. The outlet passage from the space above the diaphragm to the discharge pipe 74 contains a spring-pressed check valve 59 and an adjustable needle valve 61.