GB180477A - An improved construction of clay moulding machine - Google Patents

Abstract

180,477. Tickle, L. B., and Barnes, H. J. W. March 22, 1921. Hopper and plunger machines; feeding. - A machine of the hopper- and-plunger type particularly adapted for moulding small articles, for example, electric insulators, switch bases, and lampholders, from clay, comprises a sliding mould 14 embracing a fixed ram 3 and adapted to receive clay from a hopper 13, and a ram 7 operated by a cam 6 and furnished with a reduced end 15 adapted to compress the clay against the ram 3. The cam 6 is secured to a shaft 5 driven from a shaft 23 which also drives a shaft 19 carrying a disc 18 furnished with a projecting 25 adapted to engage a projection 26 on the mould 14 and move it back over the ram 3 out of registration with the hopper. A second finger 31 on the disc 18, engages a second projection 32 on the mould to move it completely over the ram 3 for ejection of the moulded article. The mould is restored by a pin 33 on the disc 18, engaging a lever 34 secured to a shaft 36 carrying an arm 35 embracing a pin 39 on the mould. The clay is subjected to a double compression of a pair of undulations 29, 30 on the cam 6. Perforated articles may be formed by a rod 40 passing loosely through the ram 3 and furnished with abutments 42, 43 adapted to be engaged by a saddle 44 adjustably coupled by rods 45 to the mould 14. The hopper 13 is supported at one side of and is replenished by a truck 12 running on guides 10. A pair of machines arranged side by side is described having the shafts 5, 19 connected to both and their respective cams 6 &c. set 180‹ apart. The mould may be moved through rack gear.