| 摘要 |
945,189. Valves. BOPP & REUTHER G.m.b.H. Sept. 25, 1961 [Jan. 18, 1961], No. 34331/61. Heading F2V. A valve 2 is opened manually through a handle 10 and a spring- loaded cam 8 mounted on a shaft 7 and is locked in this position by one end of a lever 14 engaging a pin 19. The lever is provided with two abutment surfaces 15, 16, the abut 15 being engaged by a pin 24 on the end of a lever 22 rotatable on the shaft 7. When a rod 23, attached to the lever 22 is pulled, the lever 22 rotates and the pin moves into the abutment 16 causing the lever 14 to rotate and disengage from the pin 19. Spring 25 rotates the cam 8 until the end of the lever 14 engages a second pin 28 which holds the valve in a throttling position. Further movement of the rod 23 again rotates lever 14 through pin 24 moving out of the surface 16 and the cam rotates to close the valve in which position a pawl 12 engages a recess 11 on the cam. To open the valve, the lever 22 is first rotated in a clockwise direction to release the pawl 12 and the valve can then be opened by the lever 10. |
