Publisher's Synopsis
Excerpt from The Practical Metal-Worker's Assistant With the Application of the Art of Electrometallurgy to Manufacturing Proceses
This work is designed to keep pace with the mechanical arts in this country, although they are in a rapid state Of progression, and' fast approaching to perfection. Any mechanic, previously unac quainted with subjects treated Of in this work, may, by following its pages as a text-book, succeed in his earliest attempts to accomplish even the most difficult processes described; hence the descriptions and directions - are of the most practical nature.
Metallic materials are submitted to the greatest variety of pro cesses, which mainly depend on their properties of fusibility, mal leability, and ductility; consequently the formation and quali ties of alloys are considered, as also the arts of founding and soldering; those of forging works In Iron and steel which are com paratively thick, and the nearly analogous treatment of thin works, or those in sheet metals; puddling, drawing tubes and wires, casting drop-shot, hardening and tempering, and a variety of correlative in formation is also Ofi'ered, for the particulars of which the reader is referred to the table of contents. The general principles upon which cutting tools are formed are explained. Although the prin ciples are few and simple, the forms and proportions of cutting tools are extensively modified, to adapt them to the different materials, to the various shapes to be produced, and to the convenience Of the Opera tor, Or Of the machine in which they are fixed. The remarks on the tools will inevitably be somewhat commingled with the account of their particular use, and the consideration of the machines with which they are allied, for it is difficult to' say where the appellation tool ends, and where that of machine or engine. Begins. All sorts of metal workers' tools are treated Of - planes, geer cutting tools, turn ing tools, boring tools, screw-cutting tools, shears, punches, and so ou-the various subdivisions of which are particularized in the table of contents.
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