GB1021746A - Improvements relating to manual control means for elevating or other conveyors - Google Patents

Abstract

1,021,746. Endless conveyers. SOVEX Ltd. Oct. 6, 1964 [Oct. 10, 1963], No. 40075/63. Heading B8A. A push-button destination device on an endless conveyer is provided with locking means to prevent interference with the setting once the device has passed out of reach of the operator. A destination is set on a tray (not shown) by depressing a knob 7 on a rod 8 against a spring 13, the rod 8 being retained by a counter balanced detent plate 12 engaging a collar 10, Fig. 2 (not shown). If an incorrect knob 7 is depressed then depressing another knob 7 releases the knob 7 already set through a further collar 11 and the new setting is retained by the detent plate 12. When a destination is set as shown by the dotted line in Fig. 1, a plate 23 on a locking device 22 swings an arm 25 into the dotted position shown so that once the device has passed out of reach of the operator the arm 25 is arranged to engage a fixed stop 26 which rocks the arm 25 through a large angle causing a locking arm 27 to pass behind and over an arm 28 pivoted on a shaft 29. The free end of the locking arm 27 acts as an abutment for the detent plate 12 precluding accidental or intentional interference with the destination setting. On arrival at a destination, tilting of the tray for delivery of its contents causes a spindle 33 to raise an arm 21, Fig. 3 (not shown), which, through a pin 30, lifts the arm 28 so releasing the locking arm 27 and thus the detent plate 12 for movement by an abutment 34 to disengage the collar 10 to release the rod 8. A combination of the knobs 7 may be simul. taneously depressed to set a destination or other information.