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A machinist's jack is a miniature screw jack used to support protruding parts of a workpiece or to balance clamping forces on that workpiece during machining operations. Aside from their size, these frequently look no different from the screw jacks used to lift buildings off their foundations.
James Lowe was born in Rotherhithe, London, in 1798, to James and Elizabeth Lowe and baptised on 13 May. [1] In 1811 Lowe began working for Edward Shorter, a master mechanic and Freeman of the City of London, who had in 1800 taken out a patent (GB patent 2367) for propelling vessels, which he had named "the perpetual sculling machine".
A house jack, also called a screw jack, is a mechanical device primarily used to lift buildings from their foundations for repairs or relocation. A series of jacks is used and then wood cribbing temporarily supports the structure. This process is repeated until the desired height is reached.
Henrietta Vansittart, born Henrietta Lowe, was born in Ewell, Surrey in 1833. [4] [5] She was one of eight children born to James and Marie Lowe, née Barnes. [6]Her father James Lowe was a blacksmith-inventory working on ship propulsion and applying for related patents using his wife's money and connections.
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