An improved method of casting any kind of pipe, lamp-posts, 'c., has been invented by George Peacock, of West Troy, N. Y., who has taken measures to secure a patent. The process consists in the employment of a lozenge-shaped iron bar, with projections of a suitable form, on the lower side, to bind the sand tor the core, and of a core box of the size and form of the pipe intended to be cast. The core is then adjusted in the mould (the collars at the end of the core bar resting on the end of the flask), and is anchored or prevented from rising by means of metal strips or bridges, which fit in recesses cut in the upper part of the core oar, and rest upon wooden supports. When the liquid metal is poured into the mould, these latter burn out, and the strip or bridge falls into the recess, and the anchor and core may be withdrawn. The upper part of the core bar, that is, the triangular part, is not quite as high or as deep as the lower, to which the wings are attached. This is for the purpose of allowing the core to be easily withdrawn from the pipe after it is cast. By the above process, pipes of any length may be ' cast, a desideratum that cannot be obtained by the method now in use. Another advantage of this new method is its application for making elbow or branch pipes, for this purpose the core-bar of the branch pipe is formed of two parts, with one end of each part fitting at opposite sides of the core bar of the main pipe. The two parts of the branch pipe have each a projection, which fits into a corresponding recess formed in the core bar of the main pipe. These projections being secured by wooden wedges within the above recesses, hold the two core-bais in position. The fluid metal, on being poured in, burns away the wedges, and the core-bars become detached from each other, and can be readily withdrawn
This article was originally published with the title "Pipe Moulding"