Munn & Co.- patent attorneys
The present invention consists, first, in constructing the nut through which the screw-shaft works, for carrying the frame on which the block holding the lathe-cutting tool is arranged, so as to move the tool toward-or away from the article on which it is to act, in such a manner that such nut, should the said screw work loose or play from side to side, can be tightened up thereon.