US3747551A - Boat hull and method of constucting the same - Google Patents

Boat hull and method of constucting the same Download PDF

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Publication number
US3747551A
US3747551A US00137463A US3747551DA US3747551A US 3747551 A US3747551 A US 3747551A US 00137463 A US00137463 A US 00137463A US 3747551D A US3747551D A US 3747551DA US 3747551 A US3747551 A US 3747551A
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US
United States
Prior art keywords
sheets
sheet
members
boat hull
reinforcing
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
US00137463A
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English (en)
Inventor
J Bennekers
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.)
IHC Holland NV
Original Assignee
IHC Holland 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 IHC Holland NV filed Critical IHC Holland NV
Application granted granted Critical
Publication of US3747551A publication Critical patent/US3747551A/en
Anticipated expiration legal-status Critical
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 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/68—Panellings; Linings, e.g. for insulating purposes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49892—Joining plate edge perpendicularly to frame

Definitions

  • the present invention relates to boat hulls and methods of constructing the same, in which a skin is formed by plates which are connected together and that have frame members and transverse stiffening members, by dividing the skin into developed sections and forming sheets of plates corresponding to said sections and by subsequently connecting the sheets with the frame members and the transverse stiffening members and with each other.
  • an object of the present invention is to provide a method of constructing boat hulls, which will be relatively simple and inexpensive to practice, for the production of boat hulls in a minimum of time and with a suitably strong structure.
  • Another object of the present invention is the provision of a boat hull which will be simple and inexpensive to prefabricate in the form of modular units, easy to assemble, and rugged and durable in use.
  • the present invention achieves these objects by first securing to the sheets of plates before these are bent, a plurality of straight parallel reinforcing members which form the frame members. The sheets are then bent to conform to the desired shape, by bending the sheets in one direction only, perpendicular to the frame members. T he frame members thus become generatrices of the bent sheets. Once the sheets are bent, stiffening members extending transversely of the reinforcing members are secured to the reinforcing members, whereupon the thus-formed rigid sheets of plates are connected with one another to form a boat hull.
  • all the sheets of plates from which the hull is to be formed can be completely prefabricated in their proper form in a factory or other buiding; while the assembling of the sheets of plates to form the hull in the shipyard can also be effected in a simple and rapid manner.
  • the reinforcing frame members in the boat hull constructed according to the present invention are straight and do not bend when the sheets are bent.
  • the frame members will not extend in a predetermined regular pattern but will extend at an angle to the frame members of others of the sheets.
  • the flat sheets of plates may advantageously be bent to the desired shape by their own weight, because the sheet has flexibility in one direction only, perpendicular to the reinforcing members, and hence will sag under its own weight in that direction.
  • the bending process is preferably effected by placing the sheet on a pin bed, which is mold formed by pins that extend upwardly to various elevations.
  • FIG. l is a perspective view of .a flat sheet of plates with the reinforcing frame members secured thereto;
  • FIG. 2 is a view similar to FIG. 1 but showing the sheet in its curved condition
  • FIG. 3 shows the sheet of FIG. 2 with transverse stiffening members secured thereto;
  • FIG. 4 is a perspective view of a boat hull constructed according to the present invention.
  • a plate 1 is formed comprised of a number of flat metal sheets secured together by welding at weld seams 4. To the sheet 1 are secured by welding a number of parallel bulb irons 2, all of them extending parallel to each other in spaced relation and parallel to the generatrices of the developed surface to be followed by the sheet.
  • FIG. 2 shows the FIG. 1 sheet in its bent position, it being noted that the bend is in one direction only, per pendicular to the irons 2, so that the irons 2 do not bend but remain straight and parallel to each other.
  • the sheet may advantageously be bent by placing it on a pin bed, in the position shown in FIG. 2, it being understood that the pin bed is comprised by a plurality of vertically adjustable pins extending to different heights, so that when the sheet rests on all or substantally all the pins, it will have the bent shape shown in FIG. 2.
  • the sheet 1 can bend in one direction only, it has more tendency to sag under its own weight than if the irons 2 were not present; and it is thus possible to bend the sheet to the FIG. 2 position under the weight of the sheet and its attachedirons, or alternatively to add further weights to the sheet to promote the bending thereof.
  • FIG. 3 shows the addition of transverse stiffening members 3 to the sheet bent as in FIG. 2, with the aid of temporary supporting means 5, the stiffening members extending transverse to the irons 2 so that the sheet is made rigid against further deformation thereby to retain the curve of FIG. 2.
  • the sheet can be removed from the pin bed and conveyed to the shipyard in order to be connected with the other sheets by welding along the edges. of the adjacent sheets, and by welding the ends of the bars 2 to each other, and by securing the stiffening members 3 to each other or to other support structure.
  • FlG. 4 shows the various sheets assembledin the form of a boat hull, from which it will be understood that not all the irons 2 extend in the same direction but rather that although all the irons 2 of a given sheet extend parallel to each other, the irons 2 of a given sheet may and ordinarily will extend to various angles to the irons 2 of the other sheets.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Adjustment And Processing Of Grains (AREA)
US00137463A 1970-04-27 1971-04-26 Boat hull and method of constucting the same Expired - Lifetime US3747551A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7006118,A NL169292C (nl) 1970-04-27 1970-04-27 Werkwijze voor het vervaardigen van een scheepsromp.

Publications (1)

Publication Number Publication Date
US3747551A true US3747551A (en) 1973-07-24

Family

ID=19809968

Family Applications (1)

Application Number Title Priority Date Filing Date
US00137463A Expired - Lifetime US3747551A (en) 1970-04-27 1971-04-26 Boat hull and method of constucting the same

Country Status (6)

Country Link
US (1) US3747551A (fr)
BE (1) BE766273A (fr)
DE (1) DE2121956A1 (fr)
FR (1) FR2090740A5 (fr)
GB (1) GB1319749A (fr)
NL (1) NL169292C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921555A (en) * 1973-04-06 1975-11-25 Mitsui Shipbuilding Eng Method of constructing a spherical tank or the like
US3935633A (en) * 1974-04-16 1976-02-03 Bunker Jack E Tank fabrication process
US4690319A (en) * 1985-12-20 1987-09-01 Smith Quintin R Method of making complexly curved mold
US5219115A (en) * 1992-02-21 1993-06-15 Newport News Shipbuilding And Dry Dock Company Method and apparatus for testing welds
US5640923A (en) * 1994-07-29 1997-06-24 Long; Charles C. Chevron rib structure for a boat hull

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1826728A (en) * 1928-08-28 1931-10-13 Camps Harold Edward Joscelyn Hull structure of ships and the like
US2857662A (en) * 1953-07-13 1958-10-28 Bristol Aircraft Ltd Methods of manufacturing metal structures
US3447503A (en) * 1967-07-13 1969-06-03 Litton Great Lakes Corp Method and apparatus for modular construction of a ship
US3568300A (en) * 1968-07-02 1971-03-09 Zidell Explorations Inc Method and apparatus for forming ship hulls
US3658286A (en) * 1969-03-28 1972-04-25 Kawasaki Heavy Ind Ltd Apparatus for positioning a hull block

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1826728A (en) * 1928-08-28 1931-10-13 Camps Harold Edward Joscelyn Hull structure of ships and the like
US2857662A (en) * 1953-07-13 1958-10-28 Bristol Aircraft Ltd Methods of manufacturing metal structures
US3447503A (en) * 1967-07-13 1969-06-03 Litton Great Lakes Corp Method and apparatus for modular construction of a ship
US3568300A (en) * 1968-07-02 1971-03-09 Zidell Explorations Inc Method and apparatus for forming ship hulls
US3658286A (en) * 1969-03-28 1972-04-25 Kawasaki Heavy Ind Ltd Apparatus for positioning a hull block

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921555A (en) * 1973-04-06 1975-11-25 Mitsui Shipbuilding Eng Method of constructing a spherical tank or the like
US3935633A (en) * 1974-04-16 1976-02-03 Bunker Jack E Tank fabrication process
US4690319A (en) * 1985-12-20 1987-09-01 Smith Quintin R Method of making complexly curved mold
US5219115A (en) * 1992-02-21 1993-06-15 Newport News Shipbuilding And Dry Dock Company Method and apparatus for testing welds
US5640923A (en) * 1994-07-29 1997-06-24 Long; Charles C. Chevron rib structure for a boat hull
US5799604A (en) * 1994-07-29 1998-09-01 Long; Charles C. Triangulated chevron rib structure for a boat hull

Also Published As

Publication number Publication date
DE2121956A1 (de) 1971-11-18
NL169292C (nl) 1982-07-01
NL7006118A (fr) 1971-10-29
BE766273A (nl) 1971-10-26
NL169292B (nl) 1982-02-01
FR2090740A5 (fr) 1972-01-14
GB1319749A (en) 1973-06-06

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