pins uniting theframe plates. The eccentric is designed to engagein one position a swinging bar, D, pivoted between theframe-plates. Both bars, D and C, are formed withhollowed jaws and cutting edges, so that when theirlower ends are brought together a tubular punch isproduced. A plug-receiving… … THE TIRE-REPAIRING TOOL IN OPERATION. movement. The punch formed by the lower end ofthe two bars is inserted at the puncture to produce aclear, round aperture. The aperture having been made,the tool is drawn from the tire and the frame isturned end for end in the yoke. The pinion is nowturned until…
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![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep02muss-489-81.webp)
