Samuel Varley

Born 24 Oct 1744. Died 18 April 1822.

Samuel Varley of Clerkenwell was a watchmaker,instrument maker, and scientist.

1825 Samuel Varley's method of cutting screws in the lathe was described by Cornelius Varley ^[1]. The lathe spindle was provided with a short threaded portions having a range of thread pitches (four are shown in the illustration). A guide pin, pushed into contact with the selected threaded portion, was clamped to a flat bar which could slide parallel to the axis of the lathe. The other end of this bar carried a tool holder. The form tool (a chasing tool) would be manually pushed into contact with the workpiece. The toolholder was supported on the underside.

Sources of Information

↑ [1] Varley, Cornelius. "No. III. COPYING SCREWS BY THE LATHE." Transactions of the Society, Instituted at London, for the Encouragement of Arts, Manufactures, and Commerce, vol. 43, 1824, pp. 90–93 and Plate VJSTOR, www.jstor.org/stable/41325689. Accessed 15 Sept. 2020

[1] [1] Varley, Cornelius. "No. III. COPYING SCREWS BY THE LATHE." Transactions of the Society, Instituted at London, for the Encouragement of Arts, Manufactures, and Commerce, vol. 43, 1824, pp. 90–93 and Plate VJSTOR, www.jstor.org/stable/41325689. Accessed 15 Sept. 2020

[1]

Grace's Guide To British Industrial History

Samuel Varley

See Also

Sources of Information