Gamble was educated at
Pembroke College, Cambridge, graduating B.A. 1784, M.A. 1787, and becoming a Fellow of the college, He was chaplain to the
Duke of York and Albany, and became chaplain-general of the forces. He was rector of
Alphamstone, and of
Bradwell-juxta-mare in
Essex. He died at
Knightsbridge on 27 July 1811.[4][5] He was minister of Knightsbridge's Trinity Chapel, and had resided there, at 3 South Place, from 1801.[6]
In 1795 Gamble published a pamphlet Observations on Telegraphic Experiments, or the different Modes which have been or may be adopted for the purpose of Distant Communication. He followed it with Essay on the different Modes of Communication by Signals (1797).[4] He is credited with the invention at this period of a six-arm
semaphore.[7]
^Rutland Gardens and South Place: South Place and South Lodge, in Survey of London: Volume 45, Knightsbridge, ed. John Greenacombe (London, 2000), pp. 128–134. British History Online
http://www.british-history.ac.uk/survey-london/vol45/pp128-134 [accessed 24 December 2016].