The practical metal-worker's assistant : containing the arts of working all metals and alloys, forging of iron and steel, hardening and tempering, melting and mixing, casting and founding, works in sheet metal, the processes dependent on the ductility of the metals, soldering, and the most improved processes, and tools employed by metal-workers, with the application of the art of electro-metallurgy to manufacturing processes : collected from original sources, and from the works of Holtzapffel, Bergeron, Leupold, Plumier, Napier, and others ... (1851)
Byrne, Oliver · Philadelphia : H.C. Baird · leaf 359
with the view of saving the time lost in running back,two tools are used, so that the one may cut as the tool slide traverses23 354 SCREW-CUTTING TOOLS. towards the mandrel, the other in the contrary direction. An ar-rangement for this purpose, as applied to the screwing of bolts in thelathe, is… … In the first adjustment, the wedge w, is thrust to the bottom ofthe corresponding angular notch in the slide s, and the two toolsare placed in contact with the cylinder to be screwed. For the firstcut the wedge is slightly withdrawn to allow the tool /, to be ad-vanced towards the work; and for the…
Metal-work · Electrometallurgy · Metallurgy
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