Patent GB-619648-A (GB)
Abstract: 619,648. Workmen's time - recorders. ELLIOTT, W. A. Dec. 18, 1946, No. 37303 [Class 106 (iv)] A workmen's time-recorder comprises a spring driven clock, which causes an electromagnet to be energized at regular intervals to advance time type wheels and rewind the clock, and a plunger operated by a workman to print the time, advance an ink ribbon and a paper strip and move a shutter to expose the paper strip for his signature. Time type wheels ; aligning and locking ; clock winding. A clock C, Fig. 1, drives a spindle 5 carrying cams 6, 7, Fig. 2, to allow springs 14 to pull a contact arm 10 down into notches thereon for a short time each minute to close contacts 15, 16 and energize an electromagnet 20 from batteries 17. A 60-toothed ratchet wheel 44, Fig. 7, is fixed to a shaft 45 to which are also fixed a minute type wheel 40 and hour cam 48, while a 24-toothed ratchet wheel 59 and day cam 49 are fixed to a sleeve 53 integral with an hour type wheel 54 and a 21-toothed ratchet wheel 67 is fixed to a sleeve 68 integral with a day type wheel 69. The minute type wheel 40 is advanced each minute through the ratchet wheel 44 and levers 41, 39, Fig. 1, actuated upon the energization of the electromagnet 20 and carry-over to the hour and day type wheels is effected through the ratchet wheels 59, 67 respectively by spring pressed pawls as an arm slips over the step 50 of its appropriate cam 48, 49. During each hour the arm 55, Fig. 8, slowly rises with a pin 60 on the pawl 58 guided behind a plate 61 on a check pawl 62 with tooth 63 held locking the ratchet wheel 59 by a spring 64. Just before the end of the hour the pin 60 slips over the end of the plate 61 so that a spring 65 pulls the pawl 58 into engagement with the ratchet wheel 59 ready to advance it one tooth whereupon the pin 60 bearing on the front of the plate 61 releases the check pawl 62. A pin and slot connection 66 is provided in the pawl 62 to enable a similar pawl to be adjusted for use with the 21-toothed ratchet wheel 67. A clock spring 34, Fig. 6, is fixed at one end to the clock mechanism and at the other to a collar 35 on a spindle 36 connected through a clutch 37 to a ratchet wheel 32 which is advanced each minute through an arm 24 actuated by the electromagnet 20. Impression mechanism ; ink ribbon and paper feed ; autographic means. Upon the manual depression of a vertically guided plunger 70, Fig. 2, a pin 78 therethrough cooperates with slots 77 in arms 76 fixed on a shaft 75 to turn the shaft against the action of restoring springs 73. The first part of the rotation of the shaft 75 causes an arm 81, Fig. 3, to wipe past the toe 82 of an arm 83 fixed to the spindle 84 of an impression hammer shaft 85 first turning it against a spring 86 and then releasing it to cause the hammer 80 to press paper and ink ribbon against the type wheels. Continued rotation of the shaft 75 causes arms 92, Fig. 2, to effect the ink ribbon feed by co-operation of a pin 94 with the end of a slot 96 in a bar 93 and an arm 106 to effect paper feed and the opening of a shutter plate 115 to allow a name to be signed by co-opera. tion of a pin 107 with a straight part of a slot 108 in a plate 109. The ink ribbon is con. tinuous and is guided on four spools 98a, 98b, 98c and 98d, Fig. 1, the feed spool 98a being driven by pawl and ratchet means from the said movement of the bar 93. The paper strip is fed from a spool 112, Fig. 2, to a takeup spool 111 by pawl and ratchet means actuated by the movement of the plate 109, which also withdraws the shutter plate 115 through pin and slot means 116. A subsidiary hammer 122 on the hammer spindle 84 strikes a bell 121 at each impression.