Mr Trengrouse's Rocket Apparatus, June 1836
As reported in the Comet of July 4th, 1836. Henry Trengrouse (1772-1854), from Cornwall, was the inventor in 1808 of an early form of the Breeches buoy. As he first presented his invention, however, in 1818, versions of it had long been in use by the time he demonstrated it in Guernsey, despite the Comet's misgivings.