Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . are therefore right- and left-hand tools. When, however, the hole is too small to admit of thosetools being used, that shown at E may be employed, its cutting edge being on its end, at F. Thetemper of all these tools should be drawn to a light-brown color. Scraping tools of this kind may LATHE-TOOLS, BORING AND DRILLING. 259 be made of any curve or sweep, or have a cutting edge made of any necessary shape to form a moulding or irregular form; but the width of the cutting edge mu
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . are therefore right- and left-hand tools. When, however, the hole is too small to admit of thosetools being used, that shown at E may be employed, its cutting edge being on its end, at F. Thetemper of all these tools should be drawn to a light-brown color. Scraping tools of this kind may LATHE-TOOLS, BORING AND DRILLING. 259 be made of any curve or sweep, or have a cutting edge made of any necessary shape to form a moulding or irregular form; but the width of the cutting edge must not exceed about an inch. The pressure on the cutting edge of a tool acts in two directions, the one vertical, the other downward pressure remains at all times the same ; the lateral pressure varies according to thedirection of the plane of the cutting edge of the tool to the line or direction in which the tool travels,the general direction of the pressure being at a right angle to the general direction of the plane ofthe cutting edge. For example, the lateral pressure, and hence the spring, of t
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Keywords: ., bookauthorbenjaminpark18491922, bookcentury1800, bookdecade1880
