| 摘要 |
<p>1,124,565. Valves. AMERCON CORP. 15 Nov., 1966 [22 Nov., 1965], No. 51152/66. Heading F2V. The gas governor is of the kind wherein a valve member 4 between inlet 1 and outlet 2 is connected to a diaphragm 8 responsive to outlet pressure opposed by a spring 9. The valve is arranged to trip and be closed by another spring when the outlet pressure is low. A toothed sector 11 engages the valve stem 13 and is normally held latched to a lever 14 by a hairpin spring 24 connected to the lever. Under low pressure the lever is depressed until the spring 24 engages the housing at 25. This releases the latch and spring 24 closes the valve. The device can be re-set by making the pivot pin 12 withdrawable until a key (25), Fig. 4 (not shown), engages the sector which can then be rotated. In a modification, Figs. 5 to 9 (not shown), the device is re-set by a pull rod (32) connected to the diaphragm and covered by a cap (31). The sector has a projection resting in an open pivot recess (28) on the housing. The parts can be locked by a pin 17 to make the trip ineffective.</p> |
