Patent GB-1041829-A (GB)
Title: Lubricating apparatus
IPC: F02B75/22
Filed: 1963-10-15
Abstract: 1,041,829. Lubricating. McNEIL CORPORATION. Oct. 15, 1963 [April 15, 1963], No. 40585/63. Heading F2A. A lubricating apparatus comprises an injection nozzle attached to a stationary element of a cycling mechanism and a lubricant dispenser connected with said nozzle and operated by a pneumatic cylinder, the action of which is controlled by timing means coupled to and driven by the cycling mechanism so that a movable element of the cycling mechanism is lubricated periodically. In an embodiment, a piston 7, Fig. 1, is in a cylinder 1 and is lubricated through nozzles 29 which force lubricant on to piston-rings 27. The piston 17 is driven by a connecting-rod assembly 15 which, by means of a drive 18, connects to a speed-reducer 30 having a shaft 31 attached to a timer, device 33. The latter controls the operation of a number of lubricant dispensers 35, each of which is connected to one of the cylinders of an engine, for example. Lubricant is discharged from each dispenser 35 through delivery lines 37, 39, 41 and 43 to the respective nozzles 29, the dispenser comprises a plunger-pump 45, Figs. 2 and 3 (not shown), having a cylinder 47 with a plunger 49 therein. The latter is connected by a connector 51 to an extension 55 which is received in a passage 56 of a sleeve 57 attached to the cylinder 47. The cylinder 47 has a lateral lubricant-supply port 60 and has longitudinally and angularly spaced ports 61, 63, 65, 67, 69 and 71. The plunger 49 has lateral ports 73 connected to an annular groove 74 which is spaced from the working-end 53 of the plunger 49, and an axial passage 75 which extends from the ports 73 to the working-end 53. A space 56 is formed in the cylinder 57 around the connector 51 and the extension 55. The connector 51 has a longitudinal passage 79 in line with the passage 75 of the plunger 49. A lateral port 81 in the connector 51 connects the passage 79 and the space 77 and a ball-valve 85 is biased by a spring 87 towards the inner end of connector 51. The ball-valve 85 is opened when the plunger 49 moves to the left. The cylinder 47 has flat sides 89, 91, 93, 95, 97 and 99, Fig. 4 (not shown), and has a longitudinal bore 101 therein. A transparent block 119 is mounted on the side 89 and has an inlet 123, Fig. 3 (not shown), to which a fitting 125 connects to a lubricant supply line 127. A passage 129 in the block 119 connects the supply line 127 with the inlet 60 in the cylinder 47. The block 119 has passages 131, 133 therein which register with ports 61 and 135 respectively, the latter being connected to outlet port 71 by a passage 136, Figs. 4 and 6 (not shown), and a counterbore 137. Each of the ports 63, 65, 67 and 69 receives an outlet fitting 149, Fig. 3 (not shown), which contains a valve 151 and has a connection 155 thereon. Each of the delivery lines 37, 39, 41 and 43 is connected to one of the connections 155. In use, when the plunger 49 is in the charging position, Fig. 3 (not shown), lubricant flows through the passage 129 in the block 119 and through the inlet 60, into the space 77 around the connector 51 and plunger-extension 55. The lateral port 73 in plunger 49 is blocked. As the plunger is moved to the left by an airoperated mechanism 159, lubricant is displaced from the space 77 and through the port 60. When the groove 74 and the port 61 are in alignment, the plunger-end 53 blocks the port 60, the valve 85 opens and a charge of lubricant is forced from the cylinder 47 through the passage 75, ports 73, groove 74 and port 61. The lubricant then passes up the passage 131, via the valve 145 and is returned by the passage 147 to the passage 129. As the plunger continues to the left, the groove 74 aligns with the port 63 and a charge of lubricant is forced out of the cylinder 47 and into its respective fitting 149. The lubricant then passes through the line 37 to its nozzle 29. As the groove 74 passes by the ports 65, 67 and 69, the lubricant is forced through the respective lines 39, 43 and 41 to the other nozzles 29 surrounding the cylinder. As the groove 74 passes the port 71, lubricant is forced upward through passages 136, 135, 133 and 147 to the passage 129. Thus the charges of lubricant which pass through ports 63, 65, 67 and 69 supply nozzles 29 in the cylinder via delivery lines 37, 39, 41 and 43, whereas the charges of lubricant, which are returned to the passage 29 via ports 61 and 71, allow the flow of lubricant to be observed through the transparent block 119.