London Journal Of Arts Sciences And Manufacturers And Repertory Of Patent Inventions PDF Download

Excerpt from The London Journal of Arts, Sciences, and Manufactures, and Repertory of Patent Inventions, Vol. 30 These improvements in manufacturing types and other similar raised surfaces for printing, consist in a novel ar rangement of machinery, by which matrices and moulds, of the like kind to those commonly used in casting types, may be worked through the agency of mechanism, instead of the ordinary mode of casting types by the hands of a workman. In this novel arrangement of machinery, a pan or vessel, con taining molten type-metal, is placed over a furnace contiguous to which the mould with the matrix is mounted with certain appendages; whereby the melted metal is forced into the mould, for the purpose of casting a type; and when such type has been cast, the mould is thrown open for the discharge of the type, and closed ready for a second operation. In Plate fig. 1, is a front elevation of the machine, complete and in working condition; fig. 2, is a side elevation of the same, taken at the left-hand of fig. 1. A horizontal view of the machine as it would appear from above, is represented at fig. 3; the mould and its frame and appendages being this figure removed, to shew the parts below more clearly. A vertical section of the machine, taken through the middle of the mould, the furnace, and the pot of melted type-metal, is shewn at fig. 4; this section being taken in the dotted lines 2, z, of figs. 2, and 3 -and a similar section of the machine, taken in the dotted lines Y, Y, of figs. 2, and 3, is repte sented at fig. 5. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.