1462250 Dispensing liquids H TATSUNO 29 March 1974 [24 Aug 1973 (4)] 14053/74 Heading A4T [Also in Divisions B2 and F2] A pistol-type nozzle valve e.g. for dispensing petrol from a delivery pipe 20 on an overhead reel (61), Fig. 2 (not shown), comprises a spout 2, a barrel frame 3 and a handle grip 4, an inlet 9 on the face of the barrel frame 3 being provided for connection to the pipe 20. For delivery, a trigger 21 is pulled back, acting on a push-rod 22 locked to a pilot valve rod 17a by pins 23 borne in slots (28b) of a generally U-shaped member 28, Fig. 7 (not shown), and engaging in a notch 17c of the rod 17a and a notch 22a of the rod 22. As the rods 17a, 22 are pushed back against a spring 26 a bolt head 18a is initially pulled into a counterbore in a main valve 16, and then the valve 16 is disengaged from a seat 12a on a valve seat member 12, allowing petrol to be dispensed through a spring-loaded non-return valve 14. Automatic cut-off: During dispensing, air is drawn into the region of the valve 14 through passages 12c, 36, 10a and a pipe 6 until the end 6a of the pipe 6 becomes submerged, whereupon suction is exerted through ducts 34, 35 leading from the passage 36 to a chamber 29 above a diaphragm 32. Reduced pressure in the chamber 29 results in atmospheric pressure in a lower chamber 30 raising the diaphragm 32, and the member 28, to which it is fixed, is raised, causing the pins 23 to leave the notch 22a, though remaining within the notch 17c. The connection between the rods 17a, 22 thus being released, the main valve 16 is moved to the closed position by the spring 26 to terminate dispensing. On releasing the trigger 21, e.g. from engagement with a spring- loaded retaining member 46, a spring 25 moves the rod 22 relative to the rod 17a to enable the pins 23 to re-enter the notch 22a.
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