[Illustration: IMPROVED COLD IRON SAW.]
The engraving given herewith shows a general view of the "Demon" cold
saw, designed for cutting iron, mild steel, or other metals of fairly
large sections, that is, up square or round, and any rectangular
section up to 8 in. by 4 in. The maker, Mr. R.G. Fiege, of London,
claims for this appliance that it is a cold iron saw, at once
powerful, simple and effective. It is always in readiness for work,
can be worked by inexperienced workmen. The bed plate has T slots, to
receive a parallel vise, which can be fixed at any angle for angular
cutting. The articulated lever carries a saw of 10 in. or 12 in.
diameter, on the spindle of which a bronze pinion is fixed, gearing
with the worm shown. The latter derives motion from a pair of bevel
wheels, which are in turn actuated from the pulley shown in the
engraving. The lever and the saw connected with it can be raised and
held up by a pawl while the work is being fixed. In small work the
weight of the lever itself is found sufficient to feed the saw, but in
heavier work it is found necessary to attach a weight on the end of
the lever. The machine is fitted with fast and loose pulleys, strap
fork and bar. We are informed that one of these machines is capable of
making 400 cuts through bars of Bessemer steel 4 in. diameter, each
cutting occupying six minutes on an average, without changing the
saw.--_Industries_.
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