Grace's Guide

British Industrial History

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Stephen Maberley

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Sometimes shown as John A. Maberley, a London currier

By 1790 Jabez Carter Hornblower had set up in business in London with financial backing from well-to-do currier John Maberly, where he designed a new steam engine based on the patented designs of Isaac Mainwaring.

Held steam engine patent with Jabez Carter Hornblower. A. P. Woolrich refers to J. A. Maberley, a London currier, as the purchaser of Isaac Mainwaring's 1791 patent. Jabez Hornblower improved the engine by closing the tops of the cylinders and using a separate condenser, and installed an improved engine at the Meux brewery. This led to legal action being taken by Boulton and Watt. [1]

1796 Hornblower and Maberly were sued by Boulton and Watt, who claimed one of Watt's patents – concerning the condenser had been infringed. [2] After a long trial, judgement in 1799 was in favour of Boulton and Watt and brought about the collapse of Hornblower and Maberley's business.

See Also


Sources of Information

  1. A. P. WOOLRICH (1984) Hornblower and Maberley Engines in London, 1805, Transactions of the Newcomen Society, 56:1, 159-168, DOI: 10.1179/tns.1984.010
  2. Hereford Journal - Wednesday 21 December 1796