Tap and die set
Holtzapffel & Co.
Category
Tools
Date
Unknown
Materials
Steel
Measurements
20 mm (Width); 72 mm (Length)
Collection
Tyntesfield, North Somerset
NT 39622.7
Summary
A steel screw thread gauge with four slots along one edge and four threaded plug gauges set inside the opposite edge, between the two the body of the gauge is stamped; T R P N. This corresponds to the size of thread of the plug gauges and diameter of bar required which can be checked in the corresponding slots along the edge of the gauge.
Provenance
Purchased from John Edwards in 2017, and brought back to Tyntesfield thanks to a generous anonymous donation. Antony Gibbs (1841-1907) purchased this lathe, grinding machine and the accompanying suite of accessories from Holtzapffel & Co in 1872. It was sold originally in 1852 to Count Dunin for £137.16.0. It was later returned to Holtzapffel & CO., refurbished and sold to Sir A Sterling in 1861. It was again returned to Holtzapffel, completely refurbished and resold in 1872 to Antony Gibbs Esq of Tyntesfield, Bristol for the sum of £220. On Antony’s death the lathe passed to his son Antony Hubert Gibbs of Clyst St George. In 1953 it was sold at an auction of the Gibbs estate and subsequently ended up in Scotland where it languished for the next 60 years, until it was acquired by John Edwards, an ornamental turner, who cleaned and overhauled it.
Makers and roles
Holtzapffel & Co., manufacturer