r clamp being ready to be turned. We illustrate herewith a new and simple form of wrench, The simple method of obtaining a continuous self-acting Fig. 2 is an edge view of the case and clamp, looking in the easily and swiftly adjustable, and so constructed as to insure blast for blowpipe work,… … ditional bar, re-inforcing the pin. The advantage of this blast is that all the materials are the inventor, ‘‘labor and time are saved, as the lath can be others, at hand in every laboratory. laid very expeditiously, and the spaces between them are The device as a whole, as the engraving plainly…
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