tising tool. It is made to revolve with a sions of the mortise at pleasure, is very con- ted by adjusting the stud, K'. The cutter, H', seen enlarged in fig. 2, is of speed of about 400 revolutions per minute. venient and accurate. It also permits the boring and mortising of any number of pieces… … lent wire for pianoforte strings, made of this panies, who have the invention in use; they accordingly. Fig. 2 shows a piece of wood of stuff, such as bed posts, car frames, &c, all kind of steel, as well as for cutting instru- with several different forms of mortises capa- all speak in the highest…
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