GB227437A - Improvements in lubricant compressors - Google Patents

Abstract

227,437. Tecalemit, Ltd., (Assignees of Fesler, D. F.). Jan. 10, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Single - acting suctionvalveless piston pumps; suction reservoirs.-A lubricant compressor comprises a barrel 5 having a cap 6 at one end to which is secured a plunger rod 30, a cylinder 9 slidably but non- rotatably mounted on the other end of the barrel, a tollower piston 38 slidably mounted on the plunger rod, and a coupling member 21 secured to the outer end of the cylinder 9. The cylinder 9 slides in a gland 18 mounted on a member 7 threaded on the barrel 5, and is pressed outwards by a. spring 15 bearing against a partition 13 clamped between the members 5, 7, the movement being limited by a nut 11. When the cap 6 is removed for refilling the barrel, the piston 38 is withdrawn by an enlargement 41 on the rod 30 which passes through a central aperture 16 in the partition 13. The piston comprises a felt disc clamped between two plates 36, 37 by tongues 39 stamped from the plate 36. The coupling member 21 has bayonet slots 22 adapted to coact with a pin 23 on a bearing nipple 24. A cup-leather 25 in the member 21 is pressed outwardly by a spring 26 which serves also to maintain a valve 28 normally closed. In operation, when the member 21 has been coupled to the nipple 24 so that the cup-leather 25 is pressed against the nipple, the compressor is pressed towards the nipple and the plunger 30 ejects the contents of the cylinder 9 past the valve 28 into the nipple. When the pressure is released, the barrel telescopes over the cylinder 9 and a fresh charge is drawn into the cylinder, atmospheric pressure acting on the piston 38 to cause it to move forwardly in the barrel.