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Thomas Percival Woodhead
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Publication of GB190322811ApublicationCriticalpatent/GB190322811A/en
22,811. Woodhead, T. P. Oct. 22. Screwing.-In a screwing-machine, the screwing- die is held in a mandrel D which is rotatably fitted to a rack B gearing with a pinion A by which the die is fed up to the work. The mandrel D may be turned by a handle, or may carry a worm-wheel J gearing with a worm on a driving- shaft F.
GB190322811D1903-10-221903-10-22Improvements in or connected with Screwing Machines.
ExpiredGB190322811A
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