Clockwork Cutting SS UlTABLE for use with the Sifbronze Demon cutting
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blowpipe, the S.1.F. Colibri cutting machine operated by a clockwork motor is being marketed by Suffolk Iron Foundry (1920), Ltd., Stowmarket. The machine has a heavy Garrard spring motor housed in a steel box. When wound up,a
length of 11 ft. 6 in.
can be cut at a time.
The drive on the shedi metal is by' a toothed wheel on the left of the housing, the wheel being protected from the heat emitted by th,e blowpipe. Cutting speed can be regulated for thicknesses of sheet between 4.-3 in. and braking is actuated by a knob. On the right of the housing is a small jockey wheel, which can serve as a guide when straight lines have to be accurately cut along smooth angle bar.
When this kind of work is done, a. blowpipe holder is fitted at the rear and is provided with a second guide wheel to ride on the bar. For cutting rings and flanges an adjustatde square rule with centring pins is provided.