Machine, Optical Polishing
Maker and role
Hirst Contact Lens Limited, Manufacturer
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Inside the box are the mechanical components of the machine – these are supported by metal platforms. There is a metal wheel with a black tube belt. A hole has been cut in the Perspex above the wheel to accommodate a metal stand. It has a rectangular metal arm which extends out over a metal stand. There is small a hole in this arm which holds a vertical needle, supported by the stand. In the centre of the wheel is a vertical metal cylinder. There is a horizontal spring to the right of the object. A second hole has been cut in the Perspex which houses a white plastic cup. This holds a clear plastic chuck in its centre, with a mint green material dome. There is loose plaster dust in the cup. There is a second belt which underneath the cup.
This polishing machine was made by Hirstlens engineers circa 1954. As polishing machines could not be purchased in New Zealand at the time, the engineers at the Hirstlens workshop designed their own using parts of obsolete gun sights from army surplus stores.
14 - 5 - 80 / S/N 31/ STROKE 100 / RPM 1320 Engraved
FluoroPerm 60 […] Printed