| 摘要 |
<p>770,137. Disc brakes. SINGER MANUFACTURING CO. June 15, 1955 [June 23, 1954], No. 17175/55. Class 103 (1). [Also in Group XXIV] An operating lever 114 of a clutch-brake disc 25 in the motor drive of a weaving loom has a latch 130 with a weighted tail 133, Fig. 4, which, when the lower end of the lever 114 is moved abruptly rightwards, Fig. 1, leftwards, Fig. 4, to stop the machine, as due to thread breakage, pivots the latch 130 from idle position, full lines, to latching position, broken lines, where its resilient nose 137 hooks on a stud 134 adjustably carried by the fixed cover 106 to lock the lever in clutch-release, brake-apply position against the resilience of the clutchbrake disc 25 and of a flexible diaphragm 107 which supports the disc and motor shaft through a bearing-cup 108, as described in Specification 731,048. The latch 130 is automatically released by forcing the lever 114 slightly further in the brake-apply direction. The lever 114 pivots intermediately at 124 on a trunnion 123 slidable in a member 112 which retains the shaft bearing 111 in the cup 108. At its upper end the lever 114 fulcrums on a pin 115 passing through a block 116 carrying a stud 119 which passes loosely through the fixed cover 106 and has a nut adjustably bearing on a plate 117, urged outwardly by two springs 120, Fig. 3, through which clutch pressure is applied resiliently to the clutch-brake disc 25 in the leftward direction when the lever 114 is rocked anticlockwise about the fulcrum 115 by a pull on a link 128, in opposition to a brake-apply spring 126.</p> |
