Improvements in or connected with Valves
Номер патента: GB190321959A
Опубликовано: 11-08-1904
Автор(ы): Percy Hulburd
Принадлежит: Individual
Опубликовано: 11-08-1904
Автор(ы): Percy Hulburd
Принадлежит: Individual
Реферат: 21,959. Hulburd, P., [Weeren, H.]. Oct. 12. Lift valves; packing, special methods of; packing - materials. - The valve b, which is attached to a screwed spindle c in the usual way, is faced with a disc e of asbestos or india. rubber encased in a shield of copper h or other elastic material which will readily conform to the seating a. To preserve completely the asbestos from the action of water, it is enclosed in sheet lead before the elastic shield is applied.
Improvement in elastic pitmen or connecting-rods
Номер патента: US172903A. Автор: . Владелец: . Дата публикации: 1876-02-01.