A First Part Geometric chuck in lacquered brass and polished steel signed Ibbetson's Geometric Chuck with Perigal's Straight Line Adjustment made by Holtzapffel & Co. London 1848, vertically mounted on mahogany base board for demonstration, with brass column alongside with graduated slide and spring holder for Mordan's propelling pencil (absent), paper chuck, forty-nine extra change wheels, spare filler pieces, a key and a scratch-made detent for working the apparatus on the lathe --9in. diam., screwed for usual Holtzapffel 5in. centre lathe, numbered for lathe 2012

Details

A First Part Geometric chuck in lacquered brass and polished steel signed Ibbetson's Geometric Chuck with Perigal's Straight Line Adjustment made by Holtzapffel & Co. London 1848, vertically mounted on mahogany base board for demonstration, with brass column alongside with graduated slide and spring holder for Mordan's propelling pencil (absent), paper chuck, forty-nine extra change wheels, spare filler pieces, a key and a scratch-made detent for working the apparatus on the lathe --9in. diam., screwed for usual Holtzapffel 5in. centre lathe, numbered for lathe 2012

Lot Essay

Lathe 2012 was supplied to Henry Perigal on Jan 13th 1853, which does not agree with the date on the chuck. The date however may refer to Perigal's invention of the straight line motion which enables the slide of the chuck to be moved without resetting the gears. The chuck is clearly though faintly marked for this lathe. The headstocks for the lathe were known to be in existence about 1990.

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