US3369590A - System for operating hatchway covers - Google Patents

System for operating hatchway covers Download PDF

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Publication number
US3369590A
US3369590A US528848A US52884866A US3369590A US 3369590 A US3369590 A US 3369590A US 528848 A US528848 A US 528848A US 52884866 A US52884866 A US 52884866A US 3369590 A US3369590 A US 3369590A
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US
United States
Prior art keywords
cover
sections
producing device
hatchway
torque
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 - Lifetime
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US528848A
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English (en)
Inventor
Olsson Johan Bertil
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.)
Goetaverken AB
Original Assignee
Goetaverken AB
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 Goetaverken AB filed Critical Goetaverken AB
Application granted granted Critical
Publication of US3369590A publication Critical patent/US3369590A/en
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    • 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
    • B63B19/19—Hatch covers foldable
    • B63B19/197—Hatch covers foldable actuated by fluid pressure

Definitions

  • a hatch cover composed of a series of at least three hingedly interconnected sections is operated by means of a single torque-producing device which is freely rotatably supported in bearings on a hatch beam extending across the hatch opening.
  • One outermost section in the series is connected to a side of the coaming parallel to the beam, and two further sections, the upper sides of which are facing each other when in open position, are attached to the cylinder and to the shafts, respectively, of the torqueproducing device.
  • This invention relates to a system for operating hatchway covers comprising at least three cover sections which are articulated to each other and upon being raised are folded into zig-zag form.
  • the object of the invention is to bring about the required movements for operating the cover by as few mechanical actuating means as possible and further to avoid the necessity of lifting the actuating means so as to eliminate unnecessary loads.
  • the present invention aims at an improvement and simplication of the hatchway cover operating system of the last-named type and is characterized by a single torque producing device comprising a hydraulic cylinder and rotary shafts extending from both ends thereof, bearing means on the beam extending across the hatch opening, said bearings carrying the cylinder of the torque-producing device in parallel relation to the beam and freely rotatable thereto, means to attach one section of a pair having their upper sides facing each other in raised position to the cylinder of the torque-producing device and further means to attach a second section of said pair to the shafts of said torque-producing device, and hinge means to connect one outermost section in the'series to one side of the coaming parallel to the beam.
  • FIG. 1 is a lateral elevation of a hatchway cover consisting of four cover sections shown in raised positions
  • FIG. 2 is a cross-sectional view of the cover shown in FIG. 1 and a cross beam associated therewith
  • FIG. 3 is a partly sectional View from above of the cover together with the cross beam shown in FIGS. 1 and 2
  • FIG. 4 is a sectional "ice view along the line IV-IV in FIG. 3 of the-cross beam and adjacent parts of the cover sections with the cover in lowered position
  • FIG. 5 is a sectional view corresponding to FIG. 4 with the cover in raised position.
  • the hatchway cover to be described consists of four cover sections 1, 2, 3 and 4.
  • the section 1 is by means of a hinge 5 articulated to the coaming 6 around the hatchway.
  • the free end of the section 4 rests on wheels 7 adapted to run on treads 8 disposed on the inside of the coaming 6.
  • the sections 1 and 2 as well as the sections 3 and 4 are interconnected by hinges 9 and 10, respectively, such that the undersides of the sections in raised positions are facing each other.
  • a box-shaped beam 11 Extending across the hatchway is a box-shaped beam 11 which at its ends has wheels 12 adapted to run on the treads 8 on the inner sides of the hatchway coaming 6.
  • the cover sections 2 and 3 are articulated to each other by means of pivots 13 extending through attachment lugs 14 on the respective cover sections and through vertical bearing plates 15 on the beam 11.
  • a hydraulic torque producing device 16 is freely rotatably mounted on the beam 11 longitudinally thereof.
  • the torque producing device comprises a double-acting piston and cylinder structure in which the reciprocating motion of the piston by means of helical splines can be converted into a rotary motion of shafts centrally projecting from both ends of the torque producing device 16.
  • radial arms 19 Secured to these rotary shafts are radial arms 19, and secured to both ends of the cylindrical casing of the torque producing device 16 are radial arms 18 in concentric relation to the arms 19.
  • the torque producing device 16 is sunk between the cover sections so as to be protected and to make the upper side of the cover plane. Since the pivots 13 are disposed near the upper sides of the cover sections, they are located above the axis of the torque producing device 16 and offset from the axis of rotation of the arms 18, 19. For this reason the arms cannot be rigidly connected to the cover sections 2, 3 but are articulated thereto by means of links 20 and 21, respectively, which are mounted on pivots 22 secured to the cover sections 2 and 3.
  • the mode of operation of the system is as follows.
  • the arms 18 and 19 will be turned upwards against each other and exert a pull on the links 20, 21 and thereby turn the cover sections 2 and 3 upwards about the pivots 13.
  • the sections 1 and 4 are also raised and the cover is folded as shown in FIG. 1 while the beam 11 is travelling to the left because the section 1 is secured to the hatchway coaming 6.
  • the tread 8 has a sloping portion 23 on which the wheel 7 rests.
  • the torque producing device is constructed such that the turning motion of each arm is limited to Due to the fact that the torque producing device is doubleacting the raising and lowering speed can be varied at will.
  • the hydraulic torque producing device may be replaced by mechanically or electrically attuated devices operating in the same manner. It is only important to have the torque producing device located on the movable beam 11 so that the cover sections are not subjected to any load from this device.
  • the beam 11 may form a narrow cover section on a level with the other cover sections in which case the torque producing device is located above the plane of the sections.
  • the tread for the wheels 12 is advantageously located on a level with the upper side of the coaming 6.
  • Operating means for a hatch cover for a hatch opening said cover being composed of a series of at least three hingedly interconnected sections adapted to be raised and lowered in zig-zag configuration by means of a torqueproducing device comprising: a hydraulic cylinder and rotary shafts extending from both ends thereof; a hatch beam extending across the hatch opening and arranged below the plane occupied by the sections, when in closed position; rails at two opposite sides of the hatch opening to permit sliding movement of the beam along said sides; bearing means on the hatch beam carrying the cylinder of said torque-producing device in parallel relation to the beam and freely rotatable thereto; means attaching one section of a pair of sections having their upper sides facing each other in raised position of the torque-producing device; further means attaching a second of said pair of sections to the shafts of the torque-producing device; hinge means connecting one outermost section of the series to one side of the hatch opening parallel to the hatch beam; said operating means being further characterized by hingemeans connecting the sections to the beam; the hinge means for each section having a
  • PETER M CAUN, Assistant Examiner.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Details Of Garments (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
US528848A 1965-03-05 1966-02-21 System for operating hatchway covers Expired - Lifetime US3369590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE289465 1965-03-05

Publications (1)

Publication Number Publication Date
US3369590A true US3369590A (en) 1968-02-20

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ID=20260947

Family Applications (1)

Application Number Title Priority Date Filing Date
US528848A Expired - Lifetime US3369590A (en) 1965-03-05 1966-02-21 System for operating hatchway covers

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US (1) US3369590A (https=)
NO (1) NO119777B (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430675A (en) * 1967-12-08 1969-03-04 Ass Cargo Gear Ab Hatch cover
US3795217A (en) * 1971-08-04 1974-03-05 R Spillmann Hatch cover having pairs of folding covers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930434A (en) * 1957-08-15 1960-03-29 Englesson John Elov Hatch operating device
US3056386A (en) * 1957-08-03 1962-10-02 Goetaverken Ab Apparatus for articulating hingedly connected parts
US3196932A (en) * 1961-11-27 1965-07-27 Rosendahl Arvid Victor Hatches for ships' holds

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056386A (en) * 1957-08-03 1962-10-02 Goetaverken Ab Apparatus for articulating hingedly connected parts
US2930434A (en) * 1957-08-15 1960-03-29 Englesson John Elov Hatch operating device
US3196932A (en) * 1961-11-27 1965-07-27 Rosendahl Arvid Victor Hatches for ships' holds

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430675A (en) * 1967-12-08 1969-03-04 Ass Cargo Gear Ab Hatch cover
US3795217A (en) * 1971-08-04 1974-03-05 R Spillmann Hatch cover having pairs of folding covers

Also Published As

Publication number Publication date
NO119777B (https=) 1970-06-29

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