Patent Fact File1: The Henshall Corkscrew

Patent Date:24 August 1795
Patent No:2061
Length of Patent: Fourteen years
Patentee: Samuel Henshall, in Princes Street, in the Parish of Christchurch, in the County of Middlesex, Clerk.
Manufacturer:Matthew Boulton, Soho Manufactory, Birmingham
Distinguishing Marks: On the button "Obstando Promoves Soho Patent" translated from the Latin as " By standing firm one makes advancement."

Exists in three forms:
I Simple form with concave button; rare but at least forty examples known,
II Compound form with a frame and mechanical action; much rarer, only one example known.
III Compound form with socket, not known.