Patent GB-428888-A (GB)
Title: Improvements in storage and dispensing systems
IPC: B67D7/32
Filed: 1934-04-21
Abstract: 428,888. Tanks. WHITLOCK, R. G., 1130, West 8th Street, Los Angeles, U.S.A. April 21, 1934, No. 12094. [Class 69 (i)] [See also Groups XVIII, XXII, and XXV] A device for use with a storage tank 15, Fig. 1, having inlet and outlet pipes 14, 23, the latter being connected to a dispensing device 24, comprises a housing 1 which has an inlet passage and a cover therefor, means being provided for registering the number of times said cover is opened to provide access to the inlet passage. Means are also provided for the following purposes ; (1) to prevent reversal of the direction of movement of the cover once an opening or closing movement has been started, thus to ensure actuation of the registering means ; (2) to ensure the severance of a token before access is obtained to the cover and (3) to prevent dispensing whilst filling is in progress. The housing 1 is provided with an outer cover 31, Figs. 5 and 6, which, when unlocked and opened, firstly gives access to a second cover 22, which covers the inlet 20, leading to the pipe 14 via a meter 18 having a visible register 29, and secondly operates a valve 44 to close the draw off pipe 23, thereby preventing dispensing whilst the tank is being filled. When the lock controlling the cover 22 is operated, a cam is moved to operate a member 75, Fig. 5, to depress a member 69 connected to rods 64, 66 in such a way that when one is moved upwardly the other is moved downwardly. The rod 64 is normally moved upwardly by a spring 71 so that when the cover 22 is closed the rod enters a slot 65 in the hingeshaft 45 and locks the cover. When the cover 31 is opened, a slot 67 in the hinge-shaft 34 is positioned immediately below the rod 66. Accordingly when the member 69 is depressed, the rod 64 is withdrawn to free the cover and the rod 66 is raised to lock the cover 31 in the open position. When the cover 22 is operated and the shaft 45 is rotated, teeth 47, Fig. 9, run over one of two pawls 48, 49, thus preventing reverse movement until a pin 58 upon the shaft, and working in a slot in a sleeve connected to a member 57, engages one end of the slot and moves the member 57 to bring the appropriate pawl into engagement with the teeth by means of a spring 56 and a member 55. During closing of the cover, the shaft 45, through gearing including a one-way drive, rotates a sprocket 88, Fig. 7, to wind a strip 85 from a supply-roll 86a to a take-up 89 ; before the key may be inserted in the lock 73 which controls the lid 22, a hole must be punched in the tape, and to this end a detachable punch 102 is inserted in a screwed member 104, the cutting-toll 105 being prevented from rotation with the sleeve 106 by a pin which engages a slot in the member 104. The part removed from the strip is used as a token, and is detached from the tool after removal of the punch by depression of a member 112. The end portion of the tape is suitably formed or coloured to give warning that replenishment is necessary, and in order to prevent operation of the lock 73 when the supply of tape is exhausted, the tape passes through an aperture 116 in a member 115 which it thus normally maintains raised and which falls when the supply of tape is exhausted, and prevents movement of the cam 74 which engages the member 75. The tank 15 has a float-indicator 26, a vent 25 and a return 27.