Jonathan Hulls
Jonathan Hulls (* 1699 in Aston Magna , Gloucestershire , England , † 1758 in Broad Campden , Gloucestershire, England) was a British engineer and inventor of a tugboat that was powered by a steam engine.
Life
Jonathan Hulls had a good school education but no scientific training. He is said to have been a watchmaker . He probably saw steam engines in action in the South Staffordshire coal fields . He filed a patent for A New Invented Machine for carrying Vessels or Ships out of, or into, any Harbor, Port, or River, against Wind and Tide, or in a Calm ( A newly invented machine for carrying vessels and ships out of or into a port or river, to be transported against wind and tides or with no wind ), which was granted to him on December 21, 1736 and had a term of 14 years.
In a 48-page paper, Jonathan Hulls suggested not equipping every ship with a steam engine, in order not to waste unnecessary cargo space, but rather keeping steam engine-powered tugs ready in ports. The steam engine was supposed to drive a paddle wheel at the stern of the ship, whereby the up and down movement of the piston was converted into a rotation by means of a pawl . Hulls ordered several parts of the steam engine from the Birmingham Foundry, presumably equipping an existing ship with them. It is unknown whether this ship was completed and tested.
literature
- Charles E. Partington: A Course of Lectures on the Steam Engine delivered before the Members of the London Mechanics' Institution , London 1826 ( online )
Web links
Individual evidence
- ^ Basil EG Clark: Steamboat Evolution , lulu.com, June 1, 2010, ISBN 978-1-84753-201-5 , pp. 87-90
- ↑ Thomas Tredgold : The Steam Engine , London 1827, p. 14 ( online )
| personal data | |
|---|---|
| SURNAME | Hulls, Jonathan |
| BRIEF DESCRIPTION | British engineer and inventor of a tugboat |
| DATE OF BIRTH | 1699 |
| PLACE OF BIRTH | Aston Magna , Gloucestershire , England |
| DATE OF DEATH | 1758 |
| Place of death | Broad Campden , Gloucestershire , England |