. The 20th century toolsmith and steelworker; a complete, practical, and scientific book. Fig. 78. Top and bottom swage for making mallet head tools. Punching Teeth in Stone Cutters Tools. There are different kinds of punch machines used inperforming this work, which are operated by an up-right, side or foot lever, and all will do good work asa rule if the punch and die are made properly. The 142 THE TWISNTHSTH CENTURY correct shape of these tools are shown in Fig. 79, whichillustrates both die and punch made with a bevel. Thisstyle of punch and die will punch the teeth very easyand the punch
. The 20th century toolsmith and steelworker; a complete, practical, and scientific book. Fig. 78. Top and bottom swage for making mallet head tools. Punching Teeth in Stone Cutters Tools. There are different kinds of punch machines used inperforming this work, which are operated by an up-right, side or foot lever, and all will do good work asa rule if the punch and die are made properly. The 142 THE TWISNTHSTH CENTURY correct shape of these tools are shown in Fig. 79, whichillustrates both die and punch made with a bevel. Thisstyle of punch and die will punch the teeth very easyand the punch will not break so easy and will keepthe chisel straight when punching in the teeth. Theopening in the die at a should be a little larger onthe under side^ which will act as clearance. Thecutting edge of the punch should fit the opening veryclosely, it being a little thinner back from the cuttingedge in order that it will move up and down throughthe opening in the die with ease. The beveled cut- D
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Keywords: ., bo, bookcentury1900, bookdecade1900, bookid20thcenturytools01holf
