GB191416202A - Machine for Making Bricks and the like. - Google Patents

Abstract

16,202. Rogers, F. H., [Enamel Concrete Co.]. July 7. Endless-chain machines ; delivery; feeding and measuring. - Comprises a brick machine of the endless-chain type wherein a series of moulds are automatically and successively passed beneath devices for feeding them firstly with a layer of enamel or liquid facing-material, secondly with a layer of cushioning-material, and thirdly with the brick material. The machine comprises an endless chain 3 with alternate links formed as pallet supports and provided with pins 6 on which the moulds slide. Cam-guides 27, 29, raise the moulds at each end of the machine for the insertion and withdrawal of the pallets. The enamel or facing- material, contained in a hopper 35, is lifted by scoops 50, Figs. 1 and 6, connected to crank-rods 54, and tilted into shoots 56 which deliver it to pivoted troughs 57 arranged over the moulds 21 and operable by link mechanism 60, 65, to discharge their contents into the moulds. Cushioning- material is supplied from a hopper 75 which is fitted with spring plates to press down the material and a reciprocating knife 96 carried by levers 98, to slice off a layer of material. The body material is supplied from a hopper 113 fitted with feed-arms 123 and a regulatable outlet comprising louvers 116 controlled by a lever 120. After filling, the moulds are scraped by a stationary bar 130 and then pass beneath pressing - plungers 233 carried by a head 234, Fig. 15, operated by toggles T<2>, actuated by crank-rods 210. During pressing, the moulds and plungers are alined by pins on the head 234 engaging recesses in the moulds. The plungers are cleaned by a reciprocating scraper 144, Fig. 16, carried by a bar 143 having a shaped portion 145 which co-operates with guides 139, 136 to cause the scraper to engage the plungers. After pressing, the bricks are held down upon the pallets by plungers 333, Fig. 24, and the moulds are raised by claws 379 on to spring tracks 387 in alinement with the camguides 29. The plungers 333 are carried by a crosshead 355 operated by rods 331, and the claws 379 are carried by slides 373 operated by rods 371. A main shaft, operated through a clutch, drives, through spur gearing 196, 200, Fig. 1, the cranks that operate the toggles T<2>, Fig. 15 and through bevelgearing 301, shaft 302, gears 303, 307, crank 395, and rod 396 it operates a pawl lever 397 for advancing the mould chain. A shaft 306, furnished with a gear 305 meshing with the gear 302, carries cams for operating the rods 331 of the holding- down plungers 333 and for operating the mouldraising devices and is also furnished with a crank 404 which operates a lever 399 to disengage the pawl 400 on the lever 397 during the pressing stroke ; the shaft 306 also drives, through chain gear 421, a triple sprocket 423 which, in turn, drives a shaft 55 operating the crank-rods 54 and a shaft 149 fitted with cams for operating the knife 96 and the plunger scraper 144. Should a mould project upwardly it engages a pin 460, Fig. 32, on a lever 457 and through this lever and a rod 456 operates the main clutch lever 451 to stop the machine. It is stated that the machine may be employed for the manufacture of rough - surfaced bricks by feeding into the moulds firstly coarse material, secondly the liquid layer and then the body material, or to produce other forms of composite brick ; also that different colours may be employed for the various layers and may be mixed or mingled.