GB117156A - Improved Plant for the Manufacture of Concrete Posts and Blocks. - Google Patents

Abstract

117,156. Kooij, W. July 26, 1917 Tamping-machines; moulding- plant; moulds. - Relates to plant for the manufacture of concrete blocks, posts, &c. Material is fed through a shoot 4 to a drum-mill 1 and is delivered into a hopper 10 fitted with a pair of manually-operated slides 11 beneath which is a receptacle 12 having interior walls 17 adjustable by screws 18. The receptacle 12 is closed during filling by a plate 19 adjustably mounted on a wagon 20 carrying the moulds. Fig. 5 shows a post mould disposed to the left of the plate 19 and a block mould disposed to the right. The post mould comprises longitudinal partitions 22 furnished with hooks to engage I-beams 23 on the wagon 20, which partitions are spaced apart by mould bottoms 25. Transverse partitions 26 rest on the bottoms 25. Screws 27, controlled by bandwheels 28, are connected to the outer partitions. to facilitate stripping of the mould. Frames or strips 19 are provided to form bevelled edges. Longitudinal reinforcements 59 are supported on cross-bars 58 which are withdrawn after setting. The block mould comprises longitudinal partitions. bottoms 29, and transverse partitions 30 connected by projections 32 to a bar 33 at either side. The bars 33 are furnished with a hand-rail 37 and with rollers 34 travelling on rails 35. The lower corners of the partitions 30 are furnished with projections 38. To distribute the material from the mill 1 uniformly along the hopper 10, the hopper is provided with two frames 41 which can be moved longitudinally towards and from each other by rack gearing 42, 43 controlled by hand cranks 45. Inclined plates are arranged at the ends of the hopper to vary the length according to the length of the moulds. In operation, the concrete mass is discharged from the mill 1 into the hopper 10 and distributed by frames 41. The slides 11 are next withdrawn to discharge the material into the receptacle 12, after which the wagon 20 is moved to withdraw the plate 19 and allow the material to pass into one of the moulds. The filled mould is then brought under a tamp 46 carried by rods 47 furnished with lateral projections 48, which are engaged by levers 49 mounted upon a shaft 7. After tamping, the wagon is removed and the moulds are stripped, a feed wagon with empty moulds being brought beneath the hopper 10.