|Title||Diagram, engine for grinding hyperbolic glasses by Christopher Wren|
|Description||Drawing of Christopher Wren's 'engine' for grinding hyperbolic glasses. This follows on from Wren's publication in Philosophical Transactions of the Royal Society, vol. 4, no. 48 (1669), which shows that a section through the axis of a cylinder was a hyperbolic surface, which could then be applied to create a machine to grind hyperbolic lenses. This drawing, however, is not much more than a geometric diagram with shading, and does not take into account the wheels, cogs and other arrangements necessary to translate this into an actual machine.|
Includes 2 cylinder with a hyperbolic surface and a disk.
Parts are lettered.
Subject: Engineering / Geometry
|Physical description||Ink on paper|
|Related material||DOI: 10.1098/rstl.1669.0069|
Printed in 'Philosophical Transactions', vol 4, no 48, p 961 (1669)
|Related records in the catalogue||RBO/4/20|
Fellows associated with this archive
|NA8299||Wren; Sir; Christopher (1632 - 1723); architect, astronomer, and mathematician||1632 - 1723|