GB1071655A - Improved hatch for liquid cargo tanks of ships - Google Patents

Improved hatch for liquid cargo tanks of ships

Info

Publication number
GB1071655A
GB1071655A GB46510/62A GB4651062A GB1071655A GB 1071655 A GB1071655 A GB 1071655A GB 46510/62 A GB46510/62 A GB 46510/62A GB 4651062 A GB4651062 A GB 4651062A GB 1071655 A GB1071655 A GB 1071655A
Authority
GB
United Kingdom
Prior art keywords
cover plate
arms
cover
plate
plates
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
GB46510/62A
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.)
NORMAN GILCHRIST
Swan Hunter & Wigham Richardson
Original Assignee
NORMAN GILCHRIST
Swan Hunter & Wigham Richardson
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 NORMAN GILCHRIST, Swan Hunter & Wigham Richardson filed Critical NORMAN GILCHRIST
Priority to GB46510/62A priority Critical patent/GB1071655A/en
Publication of GB1071655A publication Critical patent/GB1071655A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
    • B63B19/12—Hatches; Hatchways
    • B63B19/14—Hatch covers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Ship Loading And Unloading (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)

Abstract

1,071,655. Hatch cover. SWAN, HUNTER & WIGHAM RICHARDSON Ltd., and N. GILCHRIST. March 9, 1964 [Dec. 10, 1962], No. 46510/62. Heading B7S. [Also in Division E2] A ship's hatch cover for liquid cargo tanks comprises a cover plate 3 pivotally mounted on coaming 1 and adapted to be clamped on the coaming by toggle clamps 20; a counterweight 14 mounted on the cover plate and a pivotally mounted lifting handle 15, 16 adapted to serve for assisting in the clamping of the cover plate and also as a lever means bearing down on the counterweight for raising the cover plate. As shown, welded to the coaming 1 are two pairs of plate elements 6 having elongated holes 7 and similarly welded to cover plate 3 are hinge plates 8 positioned between and hinged to the plate elements 6. Each hinge plate has an arm 12 extending beyond the hinge axis which carries a round steel bar or counterweight 14 of half the weight of the hatch cover. Between each pair of plate elements 6 and adjacent the inner side of plates 8 there are pivoted arms 15, which are connected together by tube 16. The ends of the arms carry plates 17 having recessed pads 18 which are engaged by toggle bolts 19 when the cover plate is in the closed position. When the hatch is to be opened the toggles are loosened and swung clear, the tube 16 and arms 15 are raised until arms 15 bear down on counter weight 14 whereupon further downward movement lifts the cover plate to position 3B. In this position a hole 24 in the plate elements registers with holes (25) (Figs. 3 and 4, not shown) in arms 15 and plates 8, and pins not shown lock the cover plate in position. Each arm 15 also has a hole 26 (Fig. 3, not shown) which when the arms bear on the counterweight in the open position of the cover plate is in register with a hole 27 in one of the hinge plates 8. When the cover plate is to be closed the aforesaid pins are removed from holes 24, (25) and placed in holes 26, 27 to connect arms 15 to the cover plate 3. An upward force when applied to tube 16 then moves the cover to the closed position.
GB46510/62A 1962-12-10 1962-12-10 Improved hatch for liquid cargo tanks of ships Expired GB1071655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB46510/62A GB1071655A (en) 1962-12-10 1962-12-10 Improved hatch for liquid cargo tanks of ships

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46510/62A GB1071655A (en) 1962-12-10 1962-12-10 Improved hatch for liquid cargo tanks of ships

Publications (1)

Publication Number Publication Date
GB1071655A true GB1071655A (en) 1967-06-07

Family

ID=10441539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46510/62A Expired GB1071655A (en) 1962-12-10 1962-12-10 Improved hatch for liquid cargo tanks of ships

Country Status (1)

Country Link
GB (1) GB1071655A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2419444A1 (en) * 1978-03-08 1979-10-05 Moss Rosenberg Verft As Pressure release hatch for gas tank ship holds - has calibrated shear bolts and cover with flange fitting into acrylic!-silicone sealed groove

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2419444A1 (en) * 1978-03-08 1979-10-05 Moss Rosenberg Verft As Pressure release hatch for gas tank ship holds - has calibrated shear bolts and cover with flange fitting into acrylic!-silicone sealed groove

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