Patent GB-663749-A (GB)
Title: Improvements in nozzle attachment for filling tanks
IPC: F16L37/107
Filed: 1948-06-03
Abstract: 663,749. Filling tanks. PARKER APPLIANCE CO. June 3, 1948 [June 12, 1947], No. 14964/48. Class 21. [Also in Groups XXVIII and XXIX] An attachment for use in filling tanks comprises an inner sleeve or tube connected to the fluid supply and an outer sleeve carrying means to co-operate with devices on an inlet housing or fitting in the wall of the tank whereby the inner sleeve can be secured in sealing engagement with the housing, and the inner sleeve carries an axially-disposed valve which is actuated by a shaft, the latter being associated with means to prevent the valve being opened before the inner sleeve is in sealed engagement with the tank and/or means to prevent detachment of the sleeves before the valve has been closed. In an embodiment the housing 1, Fig. 1, projects into the tank, is bolted to a wall thereof, and carries a sleeve 13 which constitutes a seating for a spring-pressed non-return valve 17. A tubular nozzle 55 connected to the fluid supply can be inserted into the sleeve 13 to make a sealing engagement with the undersurface of an inwardly projecting flange 11 on the sleeve, and it is held in the sealed position by a surrounding locking sleeve 57 which can be rotated for locking and unlocking by handles 67. Sleeve 57 is provided with an inwardly-projecting ledge 60 which is slotted to allow it to be pushed past abutments 14 projecting from the sleeve 13; after which sleeve 57 is rotated to prevent it from being detached. Nozzle 55 and sleeve 57 are provided with interengaging shoulders 57b, 57c, so that, as the sleeve is rotated, the undersurface of ledge 60 rides up cam surfaces on the abutments 14 to force the upper end of the nozzle into sealing engagement with flange 11. A stop 62 carried by ledge 60 engages against the abutments 14 to limit the travel of sleeve 57. Spring-pressed keys 63 housed in keyways in the nozzle engage notches in the lower edge of flange 11 to prevent the nozzle from being turned with the sleeve 57, and these keys also carry projections 73 which, by a bayonet movement, are engaged in a groove 72 in sleeve 57 to prevent disengagement of the latter from the nozzle. The nozzle carries a valve 76 which is opened and closed by rotating a shaft 87 through the intermediary of a pinion and rack 84, and as this valve opens, it contacts and forces open valve 17. Shaft 87 carries a crank 91, Fig. 5, provided with operating handles 94, 100, and it also carries a collar 89 formed with a flat 90. Sleeve 57 carries a projection 57a formed with a flat edge which, in the unlocked position of the sleeve, faces the flat 90 and prevents the shaft 87 from being rotated to open valve 76, but which, as the sleeve is rotated to lock the nozzle in sealing engagement with the tank, moves away from the flat 90 and allows the shaft to be rotated. Similarly, after the valve has been opened, the circular portion of the collar will be in the path of projection 57a and will prevent the sleeve from being turned to unlock the nozzle from its sealing engagement with the tank. The grips of the handles 94, 100 slide on the ends of the crank 91 and are connected to spring- pressed locking bolts 93, 92b, respectively, which can engage in apertures 95, 98a to lock the valve 76 in both its open and closed positions. Specification 663,747 is referred to.