Patent GB-167766-A (GB)
Abstract: 167,766. Brendle, J. Aug. 10, 1920, [Convention date]. Factory and like time recorders, card-type.-In a workmen's time recorder of the card type in which the means for actuating the time type - wheels is automatically thrown in and out of gear for the purpose of taking into account intervals in the working time, the automatic action is effected by mechanical means under the control of a cam-wheel of the clockwork and co-operating with a locking device adapted to render the actuating pawls of the typewheels operative or inoperative. The time printing wheels 27, 25 which have two sets of type from 0 to 9 for the tenths of an hour, hours, and ten hours respectively are provided with ratchet wheels 22, 24 actuated by pawls 19, 21 independently mounted on a spindle 28 carried by a pivoted forked member 29 which is adapted to be rocked, at intervals of six minutes, to cause the pawls to advance the type wheels, by means of an arm 38 having a projecting pin engaging a ratchet wheel 37 driven by the clock mechanism. The ratchet wheels 22, 23 are provided with notched discs 35, 36 so arranged that when the type wheel 27 has been advanced nine steps a lateral projection on the pawl 20 enters one of the diametrically - opposed notches 35<1> in the disc 35 and becomes operative with respect to its ratchet wheel 23 so as to advance the corresponding type wheel 26 one unit on the next succeeding actuation of the member 29. A lateral projection on the pawl 21 engages the disc 36 and a second projection 21<1> thereon abuts against the pawl 20 so that the pawl 21 is operative only when both the type wheels 27, 26 have been advanced nine steps. The means to prevent actuation of the type wheels during the mid-day or other interval comprises a wheel 6 having a number of adjustable cams 8 mounted on the barrel-arbor 5 of the clockwork and adapted to rotate once in twenty-four hours. The cams 8 serve to actuate a two-armed lever 11 provided with a sector 12 meshing with a pinion 13 which co-operates with a locking device 14. 16, Figs. 2 and 8, through a pawl and ratchet wheel in such a manner that the locking device is rotated on the return of the control lever 11 to its normal position. The locking device consists of a disc 14 with five stop pins 15 of equal length and a disc with three pins 16 two of greater length than the third. The pins 15 coact with a lateral projecting lug 18 on the lever 11 to limit the turning movement of the disc 14, and the long pins 16 are adapted to coact with extension arms of the pawls 19, 21 to hold them inoperative. The short pin 16 is for the purpose of preventing operation of the type wheel 25 by its pawl 21 the remaining pawls being operative to record overtime after the termination of the normal daily working time. On the spindle of the type wheels is mounted a month type wheel 43 which is adjustable by hand and carries a disc 40 having a special type mark e.g. a plus-sign in order to bring into prominence the overtime recorded. The disc 40 is provided with an arm 40<1> which projects into the plane of turning of a projection 41, Fig. 8, on the locking device and is rocked thereby to bring the special mark to the printing pcsition at the same time as the short pin 16 becomes operative. A type wheel 45 is provided to record the day of the month and is actuated by a pawl 47 pivoted to one arm of a four-armed lever 49 pivoted to a stud 51 and adapted to be rocked by means of a pin 52 on the wheel 6. The cams 8 for those days which have the same number of working hours are arranged in one plane and those for the remaining days in different planes. The control lever 11 is shifted into the path of a group of cams by means of the engagement therewith of a cam 58<1> on a cylindrical member 58 which is adapted to be rotated once a week bv means of a ratchet wheel 60 and pawl 57 mounted on an arm of the four-armed lever 49; a pin 61 limits the ratchet movement of the pawl 57. The larger cam 8<1> serves to swing the lever 11 to a greater extent than is effected by the cams 8 and is operative on Saturday when the normal working time ceases earlier than on other days so as to render the stop pin 16 operative. All the wheels are provided with the usual aligning or detent pawls.