| 摘要 |
947,579. Time switches. CONTROLS CO. OF AMERICA. Feb. 16, 1960 [June 30, 1959], No. 5407/60. Heading H2B. The starting position of a timer is set by a device comprising a number of pins, one of which can be selectively depressed so as to ride on the surface of a rotatable disc, which has means for engaging the selected pin to stop the disc at the selected starting position. In one form a number of pins 30 are angularly and radially spaced on a plate 32 and one can be selected and depressed to the right, Fig. 4, by a member 34 rotatable about a sleeve 22. The disc 24 has a number of angularly and radiallyspaced holes 28 so that as the disc 24 is manually rotated, the selected pin drops into the corresponding hole and prevents further rotation until a knob is depressed. This moves the disc to the right, clear of the pin 30, and a cam 18 also moves to the right to allow contacts 16 to close to start the timer motor. When the selected cycle has been completed, a tab 26 on the disc 24 will abut against a fixed lug 40 and stop the disc. This lug has a sloping surface, so that if the knob 38 is again rotated, the tab 26 will ride up on the lug moving the disc to the left, thereby opening contacts 16. In a modification, Figs. 9 to 14 (not shown), each pin 30 is associated with a separate operating push-button, the buttons being arranged in two lines of five, one on each side of the spindle 20. |
