US3494406A - Hatchcover-system - Google Patents

Hatchcover-system Download PDF

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Publication number
US3494406A
US3494406A US708173A US3494406DA US3494406A US 3494406 A US3494406 A US 3494406A US 708173 A US708173 A US 708173A US 3494406D A US3494406D A US 3494406DA US 3494406 A US3494406 A US 3494406A
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US
United States
Prior art keywords
hatch
covers
cover
pair
broad
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
Application number
US708173A
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English (en)
Inventor
Willem Roodenburg
Aufridus Maria Waldram
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.)
TRANSPORT EFFICIENCY NV
Original Assignee
TRANSPORT EFFICIENCY NV
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 TRANSPORT EFFICIENCY NV filed Critical TRANSPORT EFFICIENCY NV
Application granted granted Critical
Publication of US3494406A publication Critical patent/US3494406A/en
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Expired - Lifetime legal-status Critical Current

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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
    • B63B19/19—Hatch covers foldable
    • B63B19/203—Hatch covers foldable actuated by cables or the like

Definitions

  • a hatchcover-system for a hatch-coaming comprises a plurality of alternately disposed relatively wide and relatively narrow hatch covers which are swingably interconnected by arms rigid with the narrow covers and slidable in slots provided on the wide covers.
  • the covers thus swing vertically during movement between a folded storage position and an unfolded operative position; and, for this movement, the covers are supported on rollers whose axes are disposed below the center of gravity of each pair of adjacent covers, at least in the folded storage position of the covers.
  • the center of gravity of each pair of covers is at substantially the same level in the folded position of the covers as in the unfolded position of the covers.
  • the invention relates to a hatch-cover system for a hatch-coaming, consisting of a number of hatch-covers with hinged connections, which can be stored in folded condition in a storage space on one or both sides of and in line with the hatch-coaming, each two adjacent hatchcovers forming a pair, consisting of a broad hatch-cover located on the side of the storage space and a corresponding narrow hatch-cover, while each hatch-cover is adapted to move by means of at least one set of rollers on guideways, which are located on the long sides of the hatch-coaming and extend on either side of the storage space, While further more means are present for moving all the hatch-covers towards and from the storage space respectively.
  • a hatch-cover system of this kind which can be stored in the storage space in folded condition, is disclosed in Dutch patent application 264,466 laid open to public inspection.
  • This known hatch-cover system presents the advantage that for the storage of the hatch-covers a storage space of small dimensions suffices.
  • this object is achieved by the feature that in the folded condition of each pair of hatch-covers the axis of the set of rollers of each broad hatch-cover is placed at such a distance beneath the centre of gravity of the respective pair of hatch-covers that this centre of gravity lies at the same horizontal level in the folded as well as the straightened or unfolded condition of the pair of hatch-covers, while of each pair of hatch-covers the narrow hatch-cover is connected with the broad hatch-cover of the adjacent pair of hatch-covers by means of an arm which is pivotally connected at one end and rigidly fastened at the other end.
  • each hinged connection between the narrow hatch-cover of a pair of hatch-covers and a broad hatch-cover of the adjacent pair of hatch-covers has the form of a sliding linkage, in which the hinge point is adapted to slide in a slotted means. Owing to this movability of the hinge point, smaller dimensions of the storage space will sufiice.
  • the slotted means of the sliding linkage is attached to the broad hatchcover, on the upper side of this hatch-cover, having its slot parallel to this upper side, the end of the slot directed towards the narrow hatch-cover connected therewith having a downwardly directed slot projection, while the fixed arm is provided with a pin which is adapted to slide in said slotted means.
  • the slotted means constitutes a kind of grip for the pin of the arm, by which grip during the folding of a pair of hatch-covers a downwardly directed pressure is exerted upon the broad hatchcover of the adjacent pair of hatch-covers, which pressure is required to start the latter broad hatch-cover swinging to the vertical position.
  • the fixed arm attached to a narrow hatch-cover is provided with a second pin, which in the straightened condition of the respective hatch-cover is accommodated in a seat fixed to theadjoining end of the adjacent broad hatch-cover.
  • the downwardly directed slot projection further extends along an arc of a circle having the pivot of the seat at its centre; that is, the second pin is at the centre of the are when fully lodged in the seat.
  • the downwardly directed pressure which is required to start the broad hatch-cover of the first pair of hatch covers, adjoining the storage space, swinging to the vertical position is obtained by weighting the side of this hatch-cover which is turned towards the storage space.
  • This weight may be formed by an auxiliary hatchcover between the pair of.hatch-covers adjoining the storage space and the adjacent side of the hatch-coaming, which auxiliary hatch-cover has a hinged connection to the broad hatch-cover of said pair and is supported by a pair of rollers only on the side adjoining the storage space.
  • the use of an auxiliary hatch-cover involves the drawback that room for the storage of this auxiliary hatch-cover must be reserved in the storage space, which implies larger dimensions of the storage space. It is therefore more efiicient to bring about the weighting by means of a Weighting means attached to the respective side of the broad hatch-cover adjoining the storage space.
  • a hatch-cover system consisting of a number of hatchcovers, in which the centre of gravity of the whole hatchcover system remains substantially at the same horizontal level when said system is closed as well as when it is stored and during the storage operation, and in which therefore only a small force is required for opening the system, is disclosed per se in Dutch Patent No. 88,014.
  • this known hatch-cover system in which unlike the hatch-cover system according to the invention the hatchcovers are not connected in pairs, but the hatch-covers represent independent units, each of the hatch-covers is supported at a point located on that side of the centre of gravity of the hatch-cover which is opposite from the storage space.
  • each of the hatch-covers has to be provided with three pairs of rollers, whilst in the hatch-cover system according to the invention three pairs of rollers for every pair of hatch-covers suffice.
  • FIG. 1 shows a part of the hatch-cover system according to the invention, in the straightened or unfolded condition
  • FIG. 2 shows a part of the hatch-cover system in a position during the folding movement
  • FIG. 3 shows the whole hatch-cover system in folded condition in the storage space.
  • the hatch-cover system consists of a number of hatch-covers 1a and 1b, a hatchcover 1a being considerably broader than a hatch-cover 1b, while in each case a broad hatch-cover 1a and a narrow hatch-cover 1b form a pair of hatch-covers because they have such a hinged connection that during the folding of the hatch-cover system they are folded together through a hinge 2.
  • Each broad hatch-cover 1a is further movably supported by means of two pairs of rollers 3 on two pairs of guideways 4 extending along the long sides of the hatch-coaming 5.
  • Each pair of rollers 3 consists of two rollers each fitted on one end face of the respective hatch-cover 1a.
  • the rollers 3 of the pair of rollers located in that half of a broad hatch-cover which is adjacent the storage space are disposed not so far outwards as the rollers of the second pair of rollers.
  • the two pairs of guideways 4 are located in each case on the outside of the adjoining long side of the hatch-coaming 5, which is provided on the deck 7 of the ship. Whilst the pair of guideways for the rollers in that half of a broad hatch-cover which is adjacent the storage space 6 extends only along the hatch-coaming, the pair of guideways of the other pair of rollers 3 extends further on either side of the storage space 6.
  • the imaginary axis of the said other pair of rollers 3 is located according to the invention in the vicinity of the centre of gravity 8 of the respective pair of hatch-covers consisting of a broad hatchcover and a narrow hatch-cover, the arrangement being such that said centre of gravity 8 lies obliquely to the right above said roller axis when the respective pair of hatchcovers' is straightened as well as when it is stored.
  • Each of the narrow hatch-covers 1b is supported by a pair of rollers 9 only at the end opposite the corresponding broad hatch-cover 1a, which rollers, owing to a support provided further towards the lower side of the hatch-cover in its straightened condition have a smaller diameter than the rollers 3.
  • the downward pressure is obtained by the use of an auxiliary hatchcover 10, which is supported by a pair of rollers 11 only on the side adjacent the storage space 6, while the other side of this auxiliary hatch-cover 10 finds a support in some suitable way on the adjoining side of the broad hatch-cover of the first pair of hatch-covers to be folded.
  • the side of the broad hatch-cover 1a adjoining the auxiliary hatch-cover 10 will be forced downwards by the downward pressure which the adjoining side of the auxiliary hatch-cover exerts thereon, after which the further folding of the first pair of hatch-covers will be completed automatically.
  • the folding movement of the next pair of hatch-covers is started by exerting a pressure upon that side of the broad hatch-cover of this second pair of hatch-covers which is adjacent the storage space, which is effected by means of the connection between adjoining pairs of hatch-covers proposed by the invention, by means of an arm 12 which is pivotally connected at one end and rigidly fastened at the other end.
  • this arm 12 is rigidly fastened to the narrow hatch-cover 1b of the preceding pair of hatch-covers and has a slidinghinged connection with the broad hatch-cover of the next pair of hatch-covers.
  • this sliding hinge consists of a slotted means 16 fitted on the upper side of the broad hatch-cover; the slot 17 extends parallel to this upper side.
  • a pin 18 fitted at the free end of the arm 12 is accomodated movably.
  • the slot is further provided with a downwardly directed slot projection 19, which represents a grip for the pin 18.
  • the arm 12 in order to ensure that during the folding movement the pin 18 moves in the first instance towards the slot projection 19, the arm 12 is provided with a second pin 22, which in the straightened condition of the hatch-cover system is acco'modated pivotally in a seat 23 fixed to the adjoining end of the broad hatch-cover.
  • this auxiliary linkage guarantees the correct relative position of the adjoining hatch-covers.
  • this auxiliary linkage represents an automatic locking of the connection between adjoining pairs of hatch-covers (automatic cross-joint locking).
  • the energy required for opening said system consists only of the force required to move the hatch-cover system in the straighented condition in the direction of the storage space.
  • the means for exerting this force having its point of application at point '20 on the narrow hatchcover of the pair of hatch-covers farthest from the storage space, may have any suitable form.
  • the first broad hatchcover starts the swinging movement to its vertical position, while at the same time the corresponding narrow hatch-cover starts the swinging movement to its vertical position. Since the weights and forces of each pair of hatch-covers compensate each other completely, or at least almost completely, substantially no energy has to be applied'for the folding of each pair of hatch-covers.
  • the invention can be applied in folding and unfolding a half of the hatch-cover system on the one side of the hatchcoaming and in folding and unfolding the half of the hatch-cover system on the other side of the hatch coaming.
  • a hatch-cover system for a hatch coaming comprising a plurality of alternately disposed relatively wide and relatively narrow hatch covers, means swingably interconnecting said covers, rollers supporting said covers for folding and unfolding movement of said system between a folded storage position in which said covers are relatively upright and an unfolded operative position in which said covers are relatively horizontal, the axes of said rollers being disposed lower than the center of gravity of each pair of adjacent said covers in said folded position of said covers, said centers of gravity being disposed at substantially the same level in said folded position as in said unfolded position of said covers, said interconnecting means comprising an arm pivotally connected to one cover at one end and rigidly connected to the adjacent cover at the other end, said interconnecting means further comprising means mounting said one end of said arm for sliding pivotal movement on and relative to said one cover, said sliding pivotal mounting means comprising means defining a slot on the upper side of a relatively wide hatch cover, said slot being substantially parallel to said upper side and having a slot end that is downwardly directed when said covers are horizontal
  • a hatch-cover system for a hatch coaming comprising a plurality of alternately disposed relatively wide and relatively narrow hatch covers, means swingably interconnecting said covers, rollers supporting said covers for folding and unfolding movement of said system between a folded storage position in which said covers are relatively upright and an unfolded operative position in which said covers are relatively horizontal, the axes of said rollers being disposed lower than the center of gravity of each pair of adjacent said covers in said folded position of said covers, said centers of gravity being disposed at substantially the same level in said folded position as in said unfolded position of said covers, horizontal track means on which said rollers of said relatively wide hatch covers roll, the last-named rollers being continuously in contact with said track means both in the open and in the closed positions of the hatch-cover system, further rollers on said relatively wide hatch covers, the axes of said further rollers being disposed on the side of the first-mentioned wide hatch-cover rollers which is opposite said center of gravity, and further track means on which said further rollers roll in and adjacent the closed position

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Tents Or Canopies (AREA)
  • Closures For Containers (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Extensible Doors And Revolving Doors (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
US708173A 1967-03-03 1968-02-26 Hatchcover-system Expired - Lifetime US3494406A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6703476A NL6703476A (no) 1967-03-03 1967-03-03

Publications (1)

Publication Number Publication Date
US3494406A true US3494406A (en) 1970-02-10

Family

ID=19799467

Family Applications (1)

Application Number Title Priority Date Filing Date
US708173A Expired - Lifetime US3494406A (en) 1967-03-03 1968-02-26 Hatchcover-system

Country Status (8)

Country Link
US (1) US3494406A (no)
DE (1) DE1556477B2 (no)
ES (1) ES351169A1 (no)
FR (1) FR1559222A (no)
GB (1) GB1200510A (no)
NL (1) NL6703476A (no)
NO (1) NO130351B (no)
SE (1) SE334305B (no)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357982A (en) * 1980-09-12 1982-11-09 Macgregor International S.A. Apparatus for opening and closing hatch cover
US20100287840A1 (en) * 2009-05-15 2010-11-18 Vladimir Godovalov Sectional folding up garage door

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127925A (en) * 1960-05-05 1964-04-07 Goetaverken Ab Ship's hatch covers
US3183874A (en) * 1962-02-19 1965-05-18 Fuller Co Hatch cover assembly
US3199576A (en) * 1962-03-20 1965-08-10 Goetaverken Ab Hatch covers of the type comprising a plurality of pairs of sections foldably connected to one another

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127925A (en) * 1960-05-05 1964-04-07 Goetaverken Ab Ship's hatch covers
US3183874A (en) * 1962-02-19 1965-05-18 Fuller Co Hatch cover assembly
US3199576A (en) * 1962-03-20 1965-08-10 Goetaverken Ab Hatch covers of the type comprising a plurality of pairs of sections foldably connected to one another

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357982A (en) * 1980-09-12 1982-11-09 Macgregor International S.A. Apparatus for opening and closing hatch cover
US20100287840A1 (en) * 2009-05-15 2010-11-18 Vladimir Godovalov Sectional folding up garage door
US8327908B2 (en) * 2009-05-15 2012-12-11 Vladimir Godovalov Sectional folding up garage door

Also Published As

Publication number Publication date
SE334305B (no) 1971-04-19
GB1200510A (en) 1970-07-29
DE1556477B2 (de) 1973-08-09
DE1556477A1 (de) 1970-01-29
ES351169A1 (es) 1969-05-16
FR1559222A (no) 1969-03-07
NL6703476A (no) 1968-09-04
NO130351B (no) 1974-08-19

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