GB772762A - Improvements in coin operated clock mechanism controlling devices - Google Patents

Abstract

772,762. Coin-controlled savings clocks. TIME SAVINGS CLOCK CO., Ltd., and METAMEC Ltd. Nov. 4, 1955 [Nov. 15, 1954], No. 33016/54. Class 27. In a savings clock in which a control wheel 14 engaged by a pawl 15 is turned stepwise away from a position in which it stops the clock by the insertion of coins down a shoot 11 and is returned to stopping position by the clock mechanism, the coins act on a spring- loaded lever 13 and the control wheel acts on a stopping lever 18 through a pressed-out tongue 17. The lever 18 extends through the gap formed by a tongue 16 pressed out of a back plate 10 to receive the pawl 15 and carries a blade spring 19 engageable with a part of the clock mechanism, such as a pin on the balance. The control wheel is returned to the stopping position by mechanism comprising a co-axial shifting wheel 20 and ratchet wheel 21, each toothed over one half of their circumference, and a disc wheel 28 connected to the clock mechanism. One or more pins 29 can be inserted in holes 31 in the disc wheel, to vary the rate of return of the control wheel, and they rotate the shifting wheel 20 stepwise through half a revolution to tension a spring 23 until the plain part of wheel 21 comes opposite a pawl 26a, when the spring rapidly completes the revolution of the shifting wheel and a pin 22 extending between the shifting and ratchet wheels returns the control wheel through the space of one tooth. The pawl 26a is held clear of the plain part of wheel 21 by a pressed-out tongue 31. The control wheel has a wide tooth space 10b to prevent further rotation after a predetermined number of coins have been inserted and also a pressed-out tongue 17a engageable with a stop 10a to limit the return movement of the wheel.