Fig. 1027.
[Fig. 1026] represents the holder with a tool in position to true up a lathe centre, the angle of the tool holder to the line of centres being the same as in [Fig. 1025]; and [Fig. 1027] represents various forms of tools for curves. All these serve to illustrate the advantages of such a tool holder.
If, for example, a piece of work requires the use of two or more such tools, and the holder is once set, the tools may be removed and interchanged with a certainty that each one put into place will stand at the exact angle and position required, not only with relation to the work, but also in relation to the other tools that have preceded it. Each hollow or round will not only be correct in its sweep, but will also stand correct in relation to the other sweeps and curves, no matter how often the tools may be changed. Inasmuch as the tool is ground at the top only for the purpose of resharpening, it maintains a correct shape until worn out.
The pin shown at f in [Fig. 1024] is fast in the holder, and fits loosely in clamp c to prevent it from swinging around on b when b is loosened.
Fig. 1028.
