GB567773A - Improvements in and relating to the manufacture of soap bars or cakes having alphabetical or other designs therein - Google Patents

Abstract

567,773. Moulding soap. GARVEY, J., GARVEY, A., and GARVEY, H. M. July 1, 1942, No. 9077. [Class 91] [Also in Group V] A soap bar having a design therein is made by passing design soap 63, Fig. 11, through a die having means for forcing cover soap 62 into the re-entrant spaces thereof to form an intermediate bar and extruding a main body of cover soap 61 around the intermediate bar to form the complete bar. Fig. 1 shows apparatus comprising a die B fed with design soap through a pipe 36 and with cover soap through pipes 33a, the die being disposed within the converging mouth of a casing 15 containing a feed screw 21 for the main body of cover soap. Figs. 5 and 6 show the die B which comprises three separate thin-walled tubes 128, 125, 129 having the shape of the letters NEW. The tubes are mounted in a base 24 connected to the pipe 36, and are surrounded by a casing 30 mounted on a support 26 apertured at 28, the apertures communicating with the pipes 33a. The casing 30 forces cover soap into the re-entrant spaces 130-134. To ensure filling of the relatively inaccessible re-entrant spaces 23 of the letter E, a funnel 38 and partition 37 are provided. To fill the completely enclosed space above the horizontal bar of the letter A with cover soap, a separate supply pipe is connected to the space. As the complete bar emerges from the casing 15 it is cut into lengths by a cutter comprising a wire 46, Fig. 8, stretched diametrically across a circular rim 43 rotatably mounted within a circular frame 44 carried by the casing 15. The rim is rotated by means of a belt 47. The cut lengths drop on to a conveyer which feeds them to the top of a hopper where they descend to a rotary conveyer which presents them to two shaping dies. Fig. 9 illustrates a method of ensuring that a design, e.g. a word, will appear the same from both sides of the finished cake of soap. Two aligned casings 15 feed the soap with the designs reversed to two rotating cutter wires 46 which cut off lengths LL. These lengths fall on to a conveyer belt 50 which carries them to the shaping dies where the two reverse faces are pressed together, the exposed faces of the resulting cake bearing the proper design. The flow of soap through the dies may be made intermittent, so by using a cam-operated shutter, Fig. 10 (not shown), by this means may be produced a cake having a design extending inwardly only part way from one or both surfaces of the cake, or the cake may have the design hidden in the centre thereof.