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Otto Mueller
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Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices
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Abstract
9441. M³ller, O. May 1. Chalk sharpeners.-A sharpener for tailors' chalk &c. consists of a box a provided with a lid c, c' carrying adjustable cutting-blades f on its underside. The blades project through openings e in a trough d in the centre of the lid. One half of the lid is hinged to allow the box to be emptied.
GB190809441D1908-05-011908-05-01An Apparatus for Sharpening Tailor's Chalk and the like.
ExpiredGB190809441A
(en)
Process for finely dividing solid polyethylenes and similar synthetic materials of high molecular weight, in particular for the application of thin layers on a support