Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,457 pages of information and 230,061 images on early companies, their products and the people who designed and built them.

T. H. P. Dennis

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of Chelmsford, manufacturers of horticultural buildings and related heating plant.

1862 Exhibited at the 1862 London Exhibition. Details of their products (Patent metallic horticultural building, or glazed structure) shown [1]

1875 Rookes Evelyn Bell Crompton went into partnership with T. H. P. Dennis.

Imported generators and arc lamps from the Belgian electrical inventor Gramme, to light some ironworks in Derbyshire that were owned by some of Crompton's relatives. Crompton soon began to make his own arc lamps that improved on Gramme's designs and to develop a new type of dynamo.

1878 Crompton took over T. H. P. Dennis and Co's Chelmsford premises to form Crompton and Co, which soon became the country's leading distributor and manufacturer of electricity generating and lighting systems.

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