Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . in Fig. 2264 was too wide at A. If may be rested on a bench or wooden block E and pened at thecorner C. If, however, the strap had a sharp instead of a round corner at C, it would he neces-sary to rest the two ends of the strap-jaws on the bench, and, using the ball pene, deliver the blowsshown by the marks at D. In either ease, the effect will be to close the distance between the jawsat A. The reason in the latter case for pening the strap in the middle is that, since the pening willt
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . in Fig. 2264 was too wide at A. If may be rested on a bench or wooden block E and pened at thecorner C. If, however, the strap had a sharp instead of a round corner at C, it would he neces-sary to rest the two ends of the strap-jaws on the bench, and, using the ball pene, deliver the blowsshown by the marks at D. In either ease, the effect will be to close the distance between the jawsat A. The reason in the latter case for pening the strap in the middle is that, since the pening willtend to round the face lengthwise, tiling out the pening marks will tend to straighten that face, andmay be more quickly performed ; for, if we were to pene the face in two places, the iiling out ofthe marks would aid the pening to round the face. It is obvious that, were the jaws too narrow atA, pening the inside crown face of the strap would widen them. The Mows should fall dead; thatis, the hammer should fall, to a great extent, 1>\ its own weight, the number rather than the force ofthe blows being
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Keywords: ., bookauthorbenjaminpark18491922, bookcentury1800, bookdecade1880
