Thomas Savage
of Pentonville
1857 Patent to Thomas Massey, of 4, Birchin-lane, and Thomas Savage, of Pentonville, to improve the apparatus known as Massey's patent log, which consists of a train of toothed wheels contained in a core, and receiving motion from a screw mounted on an axis projecting through the case[1]
1857 Patent to Thomas Massey, of 4, Birchin-lane, and Thomas Savage, of Pentonville, an improvement in "Massey's patent sounding machines" which has screws or flies, so arranged that when the apparatus descends through the water they rotate and give motion to a train of wheels, by which the number of revolutions of the fly, and consequently the depth it sinks, are recorded.[2]
1857 Patent granted to Thomas Massey and Thomas Savage for an improved means of taking soundings[3]