The machine seems to work on the principle of a rocking arm which in turn moves a device within the metal boxes. The appearance of right hand side of the rocking arm suggests it would have been connected to a reciprocal motion of some kind, perhaps on line-shafting.
The white background is obtained by the photographer painting a black lacquer on the negative covering the unwanted areas.
Epson PerfectionV700
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Keywords:bleaching, bury, casting, cotton, dyeing, engineering, forges, foundries, iron, lancashire, moulding, radcliffe, steam engines, textile finishing, textiles, whitehead and Poole
