Patent GB-191318078-A (GB)
Title: Improvements in Counters.
Inventor: ROGERS FRANCIS HERON
IPC: G06M1/34
Filed: 1913-08-08
Granted: 1914-08-10
Abstract: 18,078. Rogers, F. H. Aug. 8. Counters actuated by revolving mechanism.- An associated trip-and-total counter is actuated in one direction only by the rotation in either direction of a main shaft, the movement being transmitted through toothed wheels, the gearratios of which can be changed. The reverse rotation of the spindle of the trip counter for zeroizing rotates the numeral - drum of lowest denomination, which successively picks up the drums of higher order. The zero position is determined by the engagement of a pawl with teeth or stops on the drum of highest order, while, during the zeroizing - movement, the transfer shaft of Geneva transfer mechanism is displaced and the pinions are disengaged by the pressure of the teeth of the drums against those of the pinions. Associated counters, trip and total movements counted independently of direction of moving part.-The rotation of the shaft 25 is communicated through a toothed wheel 26 to two pairs of wheels 27, 27<a>, the wheels of each pair bearing, respectively, a co-operating pawl 20 and fixed tooth 22, Fig. 8, which allow independent relative movement of the wheels in one direction, but not in the other. If the shaft 2.5 is turned, for example, in the clockwise direction, the right-hand pair 27, 27<a>, Fig. 5, is connected and the shaft 8 is driven in the clockwise direction, while the left-hand pair 27, 27<a> rotate in opposite directions. Wheels of different gear-ratios may be attached to the arms 28, 29 which can be adjusted bv means of the screwed studs and slots 30, 31. From the shaft 8 worm gear transmits actuation to the trip-counter B and the total-counter A. Zeroizing-mechanism; transfer mechanism.- The knob 16 of the zeroizing-spindle 4 of the trip-counter B is provided with a cover 17. When the spindle, and with it the lowest numeral-drum, is turned in the opposite direction to that employed in counting, a clutch 18 allows relative movement between the wormwheel 6 and the spindle, and the lowest drum picks up the adjacent one and so on by the engagement of the pawls 20, Fig. 8, with teeth 22, similar to those of the actuating - devices, which are provided between adjacent drums. When all the drums have been brought to the zero position, a pawl 36 engages teeth upon the highest drum and locks the wheels from further movement. During the zeroizing-movement the interaction of the numeral drums, as they are forced to rotate, with the pinions 2 of the transfer mechanism presses the transfer spindle 11 upwards against springs which tend to keep it normally at the lowest point of open bearings 'in the frame plates. The transfer mechanism is of the Geneva type, in the form usually adopted with numeral drums, the transfer tooth upon the lower drum taking the form of a notch 1<a>, Fig. 2, flanked by a pair of projections 1<b>, the notch engaging with the long teeth only of the compound transfer pinions 2, while the projections engage with both the long and the short teeth, with which also engage the receiving - teeth 1<c> upon the higher drum.