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Alfred Mallory Todd
Evan Williams
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Publication of GB190504581ApublicationCriticalpatent/GB190504581A/en
4581. Todd, A. M., and Williams, E. March 6. Stuffing-boxes.-In order to facilitate the packing of the stuffing-box of a valve while under pressure, the valve spindle is formed with a shoulder A, which is grooved to receive a soft-metal washer C, and the valve cover is fitted with a soft-metal washer D, a tight joint being formed between the soft-metal washers by a hard-metal sleeve B, when the valve is set full open.
GB190504581D1905-03-061905-03-06Improvements in Stop Valves and the like.
ExpiredGB190504581A
(en)