Patent GB-331783-A (GB)
Title: Improvements in charging and discharging cocks for retarding pasteurizers
IPC: A23C3/03
Filed: 1929-10-12
Abstract: 331,783. Holmberg, C. 0., and L÷fgren, C. A. Oct.. 12, 1929. Preserving milk &c.-Means for charging and discharging holding type pasteurizers for milk &c. consists of a charging cock F common to all the compartments of the pasteurizer and having one inlet 3 and as many outlets 4 as there are compartments, a discharging cock T also common to all the compartments and having as many inlets 5 as there are compartments and a single outlet 6, and a driving gear operating the plugs 8, 14 of both cocks and consisting of two interconnected and continuously rotating gears 2 each provided circumferentially with a toothed segment 2a the remaining segment being untoothed, and toothed gears 1 connected with the plugs 8, 14 one meshing with one and the other with the other of the gears 2, and each having circumferentially a number of toothed segments 1<a> corresponding to the number of the compartments, untoothed spaces 1<b> being provided between the segments 1<a> so that for each revolution of the driving gears 2 the plug gears 1, and consequently the plugs 8, 14, are caused to rotate through an angle corresponding to the length of the co-acting segments 1<a>. In the construction described, the pasteurizer has 4 compartments. The wheels 1 are provided with means for locking them during the rest periods consisting of circular locking discs the circumferences of which have recesses corresponding to the spaces 1<b> between the toothed segments 1<a>, corresponding locking discs being provided on the wheels 2 with a space corresponding to the toothed segment 2a thereon, the uncut portion of these discs entering the recesses in the discs of wheels 1 and locking the latter during the rest periods. The gears 2 are on a shaft forming part of a double worm or other reduction gear S continuously driven from a shaft A. The housing 7, Fig. 4, of charging cock F has four outlets 4 and its plug 8, Fig. 5, is hollow and has an inlet 3 at its upper end and an outlet 10 extending peripherally through 90‹ so that in no position is the cock fully closed, allowing the charging pump to be continuously operated. Grooves 12 on the outer surface of the plug 8 prevent leakage of unpasteurized into pasteurized milk, any leakage being diverted therethrough to a container below the cock. The discharge cock housing 13, Fig. 8, has 4 inlets 5 and an outlet 6. Its plug 14, Figs. 9, 10, is hollow and has an inlet 16 which registers with one of the inlets 5 immediately the previous one is closed. The plug 14 has 4 outlets 17 co-operating with the outlet 6 so that a permanently open connection exists between outlet 6 and one of the outlets 17 and the discharge pump can be continuously operated. The plugs 8, 14 have clutches 11, 15 by which they can be detachably connected to wheels 1, the plugs being insertable only in one position in their housings. The plugs are so arranged that the discharge cock of a compartment is closed before the charging cock is opened and that the compartment which is first filled is first emptied. In a modification, the discharge cock T may have the inlets 5, 16 disposed below the outlets 6, 17.