Fig. 1037.
[Figs. 1035], [1036], [1037], and [1038] represent tool holders in which the tools consist of short pieces of steel held end-wise and at a given angle, so that the amount of clearance is constant. The holders [Figs. 1035] and [1036] are split, and the tool is secured by the screw shown. [Fig. 1037] represents a tool holder in which the tool is held by a clamp, whose stem passes through the body of the holder so as to bring the fastening nut out at the end, where it is more convenient to get at than are the screw heads in [Figs. 1035] and [1036]. It is obvious, however, that such a holder is weak and unsuitable for any tools save those used for very light duty indeed, while all this class of holders is open to the objection that the side of the holder prevents the tool from passing up into a corner, hence the cut cannot be carried up to a shoulder on the work. This may, however, be accomplished by bending the end of the holder round; but in this case two holders, a right and a left, will be necessary.
Fig. 1038.
[Fig. 1038] represents a form of tool holder of this kind in which the tool may be set for height by a set screw beneath it.
Fig. 1039.
[Fig. 1039] represents a tool holder and work-steadying device combined. The holder is held in the lathe tool rest in the usual manner, and affords slideway to a slide operated by the handle shown at the right-hand end.