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"The machine is in fact a lathe with a few special features, such as the hollow mandrel, which enables it to operate upon a bar of any length. Dies mounted on a modified form of slide-rest cut the thread to the full depth at a single traverse, and a simple arrangement enables nuts to be tapped with equal facility. In some other varieties of screwing machines, more particularly those intended for hand power only, the outward resemblance to the turning lathe is less apparent, but if their action is looked into it will be found that in them as in almost all machine tools it is the principle of the slide which is mainly conducive to their success." —The Encyclopedia Britannica, 1903

Screwing Machine

"The machine is in fact a lathe with a few special features, such as the hollow mandrel, which enables…

"The self-acting slide-rest carries reduction by driving the lathe itself the small "feed" movement necessary for bringing the tool to bear on successive portions of the work, it dispenses wholly with the need for physical exertion on the part of the workman, and does not even demand his continuous supervision." —The Encyclopedia Britannica, 1903

Slide-Rest

"The self-acting slide-rest carries reduction by driving the lathe itself the small "feed" movement…

"The middle one an ordinary hook tool, suited for outside work on wrought iron or steel, and the one above it a left hand tool which can be used also for inside. Their cutting edges are of course forged and ground straighter or more pointed or otherwise varied according to circumstances, and for cast iron or brass the angle of the edge is made much less acute, as in the lowest of the three in the engaving." —The Encyclopedia Britannica, 1903

Slide-Rest Tools

"The middle one an ordinary hook tool, suited for outside work on wrought iron or steel, and the one…