GB514410A - Improvements in or relating to covers and frames for manholes or the like - Google Patents

Improvements in or relating to covers and frames for manholes or the like

Info

Publication number
GB514410A
GB514410A GB1341738A GB1341738A GB514410A GB 514410 A GB514410 A GB 514410A GB 1341738 A GB1341738 A GB 1341738A GB 1341738 A GB1341738 A GB 1341738A GB 514410 A GB514410 A GB 514410A
Authority
GB
United Kingdom
Prior art keywords
cover
manhole
frame
teeth
class
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1341738A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1341738A priority Critical patent/GB514410A/en
Publication of GB514410A publication Critical patent/GB514410A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1418—Covers for manholes or the like; Frames for covers with implements to assist in lifting, e.g. counterweights, springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

514,410. Manhole frames and covers. ELKINGTON, V. May 5, 1938, No. 13417. [Class 107] A manhole cover 6. such as the cover of an air-raid shelter, is horizontally displaceable to the open and closed positions by means operated from within the manhole, the cover being also movable by external means. The cover is a cast-iron ribbed frame, with concrete filling, and with teeth 12 on the underside, and is displaceable from below by the ratchet action on the teeth of a hand-lever 13 linked at 20 to the manhole frame. A bolt 21 locks the cover in closed position. The manhole frame has undercut ways on three sides to receive corresponding faces on the cover, but the fourth side 10 of the frame is inclined oppositely to the fourth side 17 of the cover, and a light loose cover 18 is inserted so as to be automatically ejected when the cover 6 is opened. The cover 6 is supported at its free edge, in closed position by a bar 16, and a gastight sealing is provided by greasing the horizontal seatings. The cover may be actuated from the outside by keys, which may be stored under the cover 18 when not required. The side guides are spaced a little more widely at the region occupied by the cover in the open position so as to reduce friction and facilitate the actuation of the cover. Specifications 318,012, [Class 107], and 472,760 are referred to.
GB1341738A 1938-05-05 1938-05-05 Improvements in or relating to covers and frames for manholes or the like Expired GB514410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1341738A GB514410A (en) 1938-05-05 1938-05-05 Improvements in or relating to covers and frames for manholes or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1341738A GB514410A (en) 1938-05-05 1938-05-05 Improvements in or relating to covers and frames for manholes or the like

Publications (1)

Publication Number Publication Date
GB514410A true GB514410A (en) 1939-11-07

Family

ID=10022575

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1341738A Expired GB514410A (en) 1938-05-05 1938-05-05 Improvements in or relating to covers and frames for manholes or the like

Country Status (1)

Country Link
GB (1) GB514410A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129469A (en) * 1982-01-20 1984-05-16 Selflevel Covers Manhole cover frames

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129469A (en) * 1982-01-20 1984-05-16 Selflevel Covers Manhole cover frames

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