Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 132,618 pages of information and 209,984 images on early companies, their products and the people who designed and built them.
from the name Prudence Electric Light And Power, Oil and Nautical Engines
of Lofthouse Gate, Wakefield
of Meadow Lane, Leeds
Formerly the Pelapone Engine Co
1910 The New Pelapone Engine Company formed at Leeds.
1912 Mention. New Pelapone Engine Co of Dewsbury.
1912 Pelapone Engine Co was removed from the list of joint stock companies
WWI Company moved to Batley Carr near Dewsbury
1924 Following flood damage the company moved to Wakefield
1927 Generating Set. Exhibit at Armley Mill Museum
1934 Agreement with Ricardo and Co saw the introduction of the D50 engine
1937 Manufacturers of stationary petrol and diesel engines. "Pelapone" Petrol and Diesel Engines. 
1948 The company moved to Slack Lane, Derby, and the name changed to Pelapone Engines
Became Pelapone Engines