GB761017A - Improvements in or relating to hose coupling devices - Google Patents

Abstract

761.017. Hose couplings. AUTOMOTIVE PRODUCTS CO., Ltd. Sept. 19, 1955 [Sept. 23, 1954], No. 27547/54. Class 99(1) In a hose coupling device 15, a coupling part 17 is fixedly mounted on one of two separable units, e.g. a tractor and a trailer, and a second coupling part 18 is secured to the free end or ends of a hose or hoses 14 attached to the other unit, there being a lever 35 on the part 17 operable to engage and position the parts in coupled relation, and a latch 43 on the part 18 resiliently urged into latching engagement with the lever when the parts are coupled. A tension member is connected to the latch and the said other unit so that upon separation of the units that member operates the latch to release the lever and allow separation of the parts 17, 18. As shown, the socket part 17 is provided with two passages 19, 21, Fig. 6, in which are mounted spring-loaded valves 22, 23, and the plug pant 18 incorporates bores 32, 33 to one end of which the hoses 14 are connected; tubular members 24, 25 at the other ends of the bores have lateral ports 26 closed by spring loaded sleeves 27, 28. Upon insertion of the part 18 into the part 17 the valves are contacted and opened by the members 24, 25 and tubular inserts 29, 31 in the part 17 push back the sleeves 27, 28 to uncover the ports 26. The lever 35 which is pivoted on the part 17 and about an axis 34, is forked, each limb being formed with a lug 36 movable through a slot 37, in the wall of the part 17, and is provided with two depressions 39, 41 which co-operate with a spring-loaded ball mounted in the lug 38 carrying the lever and to retain the lever in either of two positions. The latch 43 is pivotally mounted at 44 on the part 18 and is provided with a notch 45 to co-operate with a pin 46 extending between the limbs of the lever 35, a spring 47 urging the latch about the pivot 44 and in a clockwise direction as seen in Fig. 4. In coupling the parts. together, after the part 18 is inserted in the part 17, the lever 35 is moved in a clockwise direction so that the lugs 36 of the lever bear on the inner wall of a groove 48 formed in the part 18, the limbs of the lever passing one on each side of the latch 43 and the pin 46 riding on a cam surface 49 on the latch and dropping into the notch 45 whereby the coupling parts are held securely together. Tension applied to the cable 16 extends the spring 47 and rotates the latch 43 to move the notch 45 clear of the pin 46 thus allowing the lever to move in an anticlockwise direction and so release the part 18 from the part 17. Manual operation of the coupling parts may be effected by manipulation of the latch 43. Upon separation of the coupling parts, any pressure which may exist in the bore 32, or 33, is relieved by a plunger 52, Fig. 4, slidable in a bore 53 in the part 18. In an alternative form, the lever 35 is not forked and lies to one side of the latch 43, a single lug 36 being provided.