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Joseph Charles Rickus
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Individual
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Individual
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Publication of GB190320280ApublicationCriticalpatent/GB190320280A/en
20,280. Rickus, J. C. Sept. 21. Lift valves; seats.-In a screw-down plug tap, a plug c of rubber or other material is screwed on to, and fits in, a recess in the underside of a collar on a stem a, which works loosely in the lower end of an operating screwed spindle. The tap is closed by forcing the plug c into a seating o, p, shaped as shown, in the body d of the tap.
GB190320280D1903-09-211903-09-21Improvements in Screwdown Plug Taps
ExpiredGB190320280A
(en)