Goniostat for sharpening lathe tools
- Made:
- London
- maker:
- Holtzapffel and Company
Goniostat for sharpening lathe tools, by Holtzapffel
This is a small instrument made by Holtzapffel & Co for the accurate grinding of lathe and other tools.
The tool to be sharpened is placed in a holder which is held by a thumbscrew in an arm pivoted at its lower end to a plate. The upper end of this arm moves across a scale marked in degrees. It may be clamped in any position by a screwed nut and in this way the inclination of the tool in one plane is set. The plate carrying the tool-holder is pivoted at its lower end in a fork in the frame of the instrument, whilst at the upper end a circular arm attached to the frame passes through a slot. This arm is divided in degrees and the frame may be fixed at any inclination at right angles to the first by tightening a thumb-screw. The tool point rests on an oil-stone slab or lapping plate.
Details
- Category:
- Hand and Machine Tools
- Object Number:
- 1912-33
- Materials:
- steel (metal)
- type:
- goniostat
- credit:
- J.C. Stevens (Auction Sales)
