GB689058A - Improvements in or relating to distributors for delivering liquids or semi-liquids under pressure to a number of points - Google Patents

Abstract

689,058. Lubricating. WAKEFIELD & CO., C. C. May 18, 1951 [July 20, 1950], No. 18110/50. Class 12 (iii). A distributer is provided with two cylinders 10, 11, in which plungers 12 and 13 reciprocate, and an inlet passage communicating by means of branch supply passages 46, 47 with ports 18, 19 in the cylinder 10, and by means of similar passages with ports 20, 21 in cylinder 11. In operation, Fig. 5, the supply port 19 communicates through a groove 15 in the plunger 12 with the top of cylinder 11 so that the plunger 13 is urged downwardly to force liquid in the bottom of the cylinder 11 through passages 28 and groove 14 to the delivery port 22. The plunger 13 at the end of its stroke, Fig. 6, opens up supply of liquid from port 21 to the port 60 in the'bottom of cylinder 10. At the same time the conduit 34 at the top of cylinder 10 is placed in communication with the delivery port 24. When the plunger 12 moves upwardly to the Fig. 7 position under the pressure of liquid in the bottom of 10, the liquid in the top of that cylinder is forced out along 34 to the port 24. The movement of the plunger 12 brings the supply port 18 into register with the crosspassage 14 whereby fluid under pressure is delivered via 28 to the bottom of cylinder 11. At the same time the passage 31 is opened to the delivery port 23. Thus the plunger 13 is caused to move upwardly to discharge liquid through 31 and port 23. The plunger in so moving places the supply port 20 in register with the conduit 34, and the bottom of the cylinder 10 is placed in communication via conduit 37 with the delivery port 25, whereupon the plunger 12 moves into position to repeat the cycle. Detent means 66 are provided for retaining a plunger at an end of its cylinder until such time as the pressure is built up at that end sufficient to overcome the detent, or alternatively a plunger may be locked at one end of the cylinder by a device controlled by movement of the other plunger.