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Updated: May 18, 2025
When brought into operation in the production of these minute six-sided collared nuts, held firm in the spindle of a small dividing plate and attached to the slide-rest, each side was brought in succession under the action of the circular file or cutter with the most exact precision in regard to the division of the six sides.
I removed thither my father's foot-lathe, to which I had previously added an excellent slide-rest of my own making. I also added a "slow motion," which enabled me to turn cast-iron and cast-steel portions of my great Maudslay lathe. I soon had the latter complete and in action.
I have passed unnoticed the great subject of the manufacture of machinery by itself the invention of the slide-rest, the planing-machine, and many other contrivances by which engines can be constructed with almost mathematical correctness.
In course of time various modifications of the machine were introduced such as the planing machine, the wheel-cutting machine, and other beautiful tools on the slide-rest principle, the result of which has been that extraordinary development of mechanical production and power which is so characteristic a feature of the age we live in. "It is not, indeed, saying at all too much to state," says Mr.
Maudslay, led him to value highly that class of technical dexterity in engineering workmen which enabled them to produce those details of mechanical structures in which perfect flat or true plane surfaces were required. This was an essential condition for the effective and durable performance of their functions. Sometimes this was effected by the aid of the turning-lathe and slide-rest.
The result was absolutely perfect as respects the exactness of the six equal sides of the hexagonal nut, as well as their precise position in regard to the collar that was of one solid piece with it. There was no great amount of ingenuity required in contriving this special tool, or in adapting it to the slide-rest of the lathe, to whose spindle end the file or cutter /\ was fixed.
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