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Expired
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William Henry Hammond
Richard Goodhind Fotherby
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Individual
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Individual
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Publication of GB190218270ApublicationCriticalpatent/GB190218270A/en
Underground Structures, Protecting, Testing And Restoring Foundations
(AREA)
Abstract
18,270. Hammond, W. H., and Fotherby, R. G. Aug. 20. Manhole covers ; inspection openings ; disinfecting. -In order to ensure an airtight closure of man- holes and inspection openings, the frame A for the ordinary cover C is formed with a sloping inner wall, to serve as a seat for a second cover B, a strip of rubber, soft metal, or other packing D being interposed. The cover B may be screwed down, and the space between the two covers may be filled with sand, charcoal, or other disinfectant.
GB190218270D1902-08-201902-08-20Improved Manhole or Inspection Chamber Covers for Drains Sewers and the like
ExpiredGB190218270A
(en)
An Improved Arrangement for Attaching and Detaching Metal Doors or Covers of Frames to be used for Inspection Chambers and other Appliances employed for Sanitary and other purposes.
Improvements in the Method of Packing Earthenware, China, and Glass, more particularly applicable to Earthenware Water Closets, Lavatory Basins, and Drain Pipes, and such like. And in the Apparatus employed therein.