GB694385A - Improvements in clutches and clutch plates - Google Patents

Abstract

694,385. Friction clutches. GENERAL MOTORS CORPORATION. Feb. 22, 1951 [March 2, 1950; Oct. 4, 1950], No. 4280/51. Class 80 (ii). In a multiplate clutch, the outer plates 17, Fig. 1, are smooth surfaced while the inner plates 18 have their facings 51, Figs. 2, 6, divided into sections 53, 54 by radial supply and discharge channels 58, 59 for cooling oil, each supply channel 58, which converges outwardly, being blocked at the outer end by a tapering bridge piece 64, and each discharge channel 59, which diverges outwardly, being blocked at the inner end by a tapering bridge piece 67, the sections 53, 54 and the bridge pieces 64, 67 being formed with inclined or spiral grooves. As shown in Fig. 1, the clutch is engaged by supplying pressure on to the chamber 27 of a cylinder 23 on the left-hand side of a piston 26 fast on the driving shaft 10, the cylinder being slidable on the shaft and forming the presser plate of the clutch, and is disengaged by supplying the pressure oil to the cylinder chamber 28 on the right-hand side of the piston 26. Cooling oil is supplied from a tube 31 through holes 32, chamber 33 and ports 36 to the channels 58 and discharges from the channels 59 through holes 37 in the driven drum 14.