Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 513
The 504 H. J. M. Creighton. [J.F.I. mechanical form of this device, shown in detail in Fig. 5, consistsof a brass screw, A, threaded through a bracket, B, which is at-tached to each end of every graphite segment, C. The bottom endof these screws is in the form of a plunger which enters the… … The operation of the water-proofing process with the mostrecent type of machine is as follows : Woolens are thoroughly washed with soap and rinsed in waterat a temperature of about 150 F. to remove any excess of woolgrease or soap that may have been left during the process of manu-facture. Cottons…
Science · Technology · Meteorology · Patents
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