Patent GB-200079-A (GB)
Title: Molding apparatus
IPC: C11D13/12
Filed: 1923-06-18
Abstract: 200,079. Paley, L. A. June 29, 1922, [Convention date.]. Endless-chain machines; cooling apparatus and articles; delivery; lubricating; moulds; casting and moulding soaps.-Relates to endlesschain machines, such as described in Specification 161,169 for moulding soap &c. and comprises an endless chain of moulds adapted to move in a substantially horizontal plane, means for introducing hot liquid soap into the moulds, for cooling to form cakes and for ejecting the cakes from the mould. Fig. 1 shows a machine comprising an endless chain 20 of substantially Z-shaped moulds arranged in an horizontal plane and passing around vertical driving and supporting rollers 21, 22. The moulds pass beneath a filling-hopper 42 containing hot, liquid soap and into a cooling-chamber 81, the solidified cakes being removed from the moulds, as they open in passing around the roller 21, by an ejector 104 which delivers them to a conveyer 102. Fig. 8 shows a mould section comprising a main wall 32, and outer wall 33 extending rearwardly, a bottom 35 connected to the walls 32, 39 and a forwardly extending inner wall 34 carrying journals 37, 38 adapted to interengage. and to receive, pins 40, Fig. 2, linking the mould sections together. An inscription is formed on each face of the wall 32, and if desired upon the bottom 35. The hopper 42 is finished with a sloping front wall 45 carrying a flexible scraper 62 secured to a carrier 59 adjustable by a screw 68 and clamped by a screw 70. The moulds are enclosed, during filling by lateral walls of the. hopper which are bolted to a well 47. Escape of material laterally is prevented by riders 49 housed in slots and forced down on to the mould walls 33, 34 by springs 56. Excess of soap is removed from the moulds by a knife-edge 73 on block 72 pressed down by a spring 78 and screw 76. A block 58 prevents escape of soap from the rear of the hopper. The cooling-chamber 81, Fig. 1, is preferably insulated with pressed cork 94 covered with portland cement plaster 95, and is furnished with a baffle 84 extending between the two reaches of the mould chain. A fan forces air through a duct 86, around the baffle 84, and withdraws it through a duct 85, the air being cooled by pipes 90 through which brine or ammonia is circulated. Moisture is withdrawn from the chamber through drain pipes leading from a sloping floor and furnished with cocks. To remove frost from the pipes 90, the duct 85 is fitted with a door 100 which can be placed transversely as indicated at 101 to cause air at room temperature to be circulated through the chamber. The moulds are supported by girders 23. The ejector 104 comprises a rubber-covered member adapted to engage the top of a cake and tilt it out of the mould. The member 104 is carried 'by an arm 105, Figs. 1 and 12, furnished with a nose 118 to ride over the walls of the mould and depressed by a spring 112 to engage the cake, the movement being limited by stops. Deflectors 121 guide the cakes on to the belt 102. A roller 126, Fig. 12, mounted in sliding bearings 129 may be provided to press the tops of the cakes or to print an inscription thereon. To prevent adhesion, the roller is cooled by an air blast 132 and the surface of the cakes is moistened by acetic acid dropped from a tank 133 through a cock 135. Fig. 9 shows a modified form of mould for producing octagonal cakes. Fig. 13 shows a further modification in which the outer mould walls 136 are forwardly disposed and the cakes are ejected by a member 145 carried by an arm 143 mounted on a vertical spindle 138. The invention is stated to be applicable also to wax, stearin, gelatin, cocoa butter, and chocolate. Specification 161,169 is referred to. The Specification. as open to inspection under Sect. 91 (3) (a) states that the invention is applicable to metal, This subject-matter does not appear in the Specification as accepted.