Hamilton Owen Rendel

Hamilton Owen Rendel (1843–17 September 1902) designed and installed the original raising mechanism of the Tower Bridge while working for Sir W. G. Armstrong Mitchell & Company of Newcastle upon Tyne.

His siblings were: A cousin, James Murray Dobson, became resident engineer of the Buenos Aires harbour works in the 1880s and 1890s.

Rendel took his degree at Cambridge University, and immediately after leaving started at the Armstrong, Mitchell and Company at Elswick, Tyne and Wear, where he later became head of the engineering department.

[1] He retired in early 1902 due to ill health, and died later the same year on 17 September 1902 as he was visiting his sister Mrs. Wedgwood at her residence The Lea, in Barlaston, Staffordshire.

The accumulators each comprise a 20 inches (51 cm) ram on which sits a very heavy weight to maintain the desired pressure.