US2142945A - Welded construction - Google Patents

Welded construction Download PDF

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Publication number
US2142945A
US2142945A US176047A US17604737A US2142945A US 2142945 A US2142945 A US 2142945A US 176047 A US176047 A US 176047A US 17604737 A US17604737 A US 17604737A US 2142945 A US2142945 A US 2142945A
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US
United States
Prior art keywords
plating
transversals
bracing
flange
extending
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
US176047A
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English (en)
Inventor
Kjekstad Johannes
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
Priority to BE431110D priority Critical patent/BE431110A/fr
Priority to NL52100D priority patent/NL52100C/xx
Priority to FR796431D priority patent/FR796431A/fr
Application filed by Individual filed Critical Individual
Priority to US176047A priority patent/US2142945A/en
Priority to DE1938A0088442 priority patent/DE691524C/de
Priority to GB33064/38A priority patent/GB521305A/en
Priority to FR49984D priority patent/FR49984E/fr
Application granted granted Critical
Publication of US2142945A publication Critical patent/US2142945A/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
    • B63B3/26—Frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
    • B63B73/43—Welding, e.g. laser welding

Definitions

  • the invention herein disclosed relates to the construction of vessels and in particular constitutes an improvement upon the Welded construction, known as the open frame construction, disclosed in my prior Patent No. 2,082,836, issued June 8, 1937.
  • the function of the frame of a ship is to hold the shell plating in place and in line, to resist compressive stresses imposed axially thereon; to hold the shell plating in place against pressure exerted normally thereto; to resist local deformation caused by collision, grounding, etc.; and to contribute rigidity to the general structure due to its beam action.
  • the riveted frame was nearly self-sufficient to resist all stresses and the shell was principally a watertight envelope.
  • the shell plating is utilized as a source of strength and forms a part of the beam section of the frame. In this construction in which the bracing is secured along a line, only a limited portion of the plating on either side of the connection of the bracing enters into the beam I action of the frame.
  • a welded construction of bracing for a vessel of the open frame type in which practically all of the plating may be made to form a part of the beam section of the bracing or framing.
  • a bracing that includes a member spaced from and extending parallel to the plating.
  • the member is connected to the plating by a series of transversals spaced longitudinally thereof and extending from the member to the plating at an angle to the plating, forming what may be termed an open, spread frame construction.
  • Successive transversals are welded to the plating on opposite 4o sides of a plane perpendicular to the plating and including the member.
  • Adjacent braces of this type are arranged so that their transversals are secured to the plating alternately and in line.
  • transversals have flanged ends that may be spot welded to the plating, thus avoiding the possibility of locked-in stresses encountered in continuous welds, and the fact that the plating is more securely braced against lateral pressure.
  • Fig. 1 is a transverse section of a hull of a vessel with the bracing of this invention
  • Fig. 2 is a perspective of a section of the plate Application November 23, 1937, Serial No. 176,047
  • Fig. 3 is a perspective of a section of the plate of a vessel with another form of the bracing applied thereto;
  • Fig. 4 is an end elevation of the bracing shown 5 shown in Fig. 2.
  • FIG. 2 of the drawings there is shown a section of the plate I of a vessel. This plate is braced by an angle iron 2 that is spaced from the plating i but which extends parallel thereto.
  • one flange 15 2a of the angle iron extends parallel to the plating l and the other flange 21) extends laterally to the plating I.
  • the angle iron 2 is secured to and maintained in spaced relation with respect to the plating I by a series of transversals 3 that 20 extend at an angle to the plane of the plating I.
  • Each transversal is constructed as shown and includes a central straight section 311 having a bulge 3b formed therein to increase the strength of the section and flanged ends 30 and 3d on each 25 end of the straight section 3a.
  • the straight section 3w has diverging side edges and the flange 3c is secured to the flange 2b of the angle iron 2 by spot welding as at 4 and 4a.
  • the flange 3d is secured to the plate I by spot welding as at 30 5 and 5a. It will be seen that successive transversals 3 extend to the plating, from the flange 2b of the angle iron 2 on opposite sides of a plane lateral to the plating and including the flange 2b of the angle iron 2.
  • bracings 4 and 5 35 are also shown connected to the plating at spaced intervals transversely thereof. It will be noted that the transversals on the several bracings are in line so that the transversals of one bracing come between the transversals of an adjacent 40 bracing. In consequence, a minimum area of plating is obtained between transversals of the bracings for any given number of transversals.
  • bracing shown in Fig. 1, and as described above, there is an open 45 frame construction for the hull of vessels in which a maximum amount of plating is caused to enter into the beam action of the bracing. Likewise, the plating is given greater strength against lateral forces acting upon the bracing either due to the pressure of the Water or collision.
  • the bracing may be made of much lighter weight material and the vessel can have a greater carrying capacity.
  • Figs. 3 and 4 there is shown an alternative 55 form of bracing.
  • the plating is indicated by the numeral 6.
  • the plating is braced by an angle iron 1 which has one flange la serrated.
  • the transversals 1b formed by the serrating of the flange are bent so as to extend at an angle to the plane of the flange, successive transversals being bent to extend on opposite sides of the plane of the flange.
  • Each of the transversals has formed on the end thereof a flange 1c which is secured to the plating by spot welding.
  • the difference between this construction and that shown in Fig. l is the fact that the bracing is an integral piece. This however has all of the advantages of the bracing shown in Fig. l and when several bracings are set up, the bracings are related in the manner illustrated in Fig. 1.
  • This open, spread frame construction described above has many advantages over those heretofore used. It greatly increases the critical pressure which a plate of a given thickness will stand before buckling, for the frame spacing, for the same amount of framing, is materially lesssened and the critical pressure at which a plate of a given thickness will buckle is increased inversely as the square of the frame spacing.
  • the flat surface of the plate supported by rigid bracing at points spaced one-half the distance apart as similar parallel line bracing has much greater strength.
  • This spread frame also places material along the line of action of local impact and its diagonal supports or braces are extremely effective in resisting failure by tripping or folding over upon local impact.
  • a vessel comprising a wall consisting of steel plating and a brace for the wall including a member spaced from and extending parallel to the plating, and a series of transversals of substantial length spaced longitudinally of the member and extending from the member, the several transversals extending at an acute angle to the plating and on opposite sides of a plane perpendicular thereto and being welded thereto.
  • the combination comprising a wall consisting of steel plating and a brace for the wall including a member spaced from and extending parallel to the plating, and a series of transversals of substantial length extending from the member on opposite sides of the plane perpendicular to the plating and including the member, the several transversals extending to the plating and being welded thereto.
  • the combination comprising a wall consisting of steel plating and a brace for the wall including a member spaced from and extending parallel to the plating, and a series of transversals of substantial length extending from the member to the plating and being welded thereto, successive transversals being on opposite sides of a plane perpendicular to the plating and including the member and the several transversals extending at an angle to the plating.
  • the combination comprising a wall consisting of steel plating and a brace for the wall including a member spaced from and extending parallel to the plating, and a series of transversals of substantial length extending from the member and having flanged ends welded to the plating, successive transversals being on opposite sides of a plane perpendicular to the plating and including the member and the several transversals extending at an angle to the plating.
  • a vessel comprising a wall consisting of steel plating and bracing therefor including a plurality of parallelly disposed members spaced from the plating and parallel thereto, and a series of transversals of substantial length extending from each member to the plating and having flanged ends welded to the plating, the successive transversals extending from each member being on opposite sides of a plane perpendicular to the plating and including the member and the transversals on one side of one member being positioned intermediate successive adjacent transversals of the adjacent member.
  • the combination comprising a wall consisting of steel plating and a brace therefor including an angle iron spaced from the plating and having one flange extending parallel to the plating, and a series of transversals of substantial length secured to the other flange and extending to the plating at an angle thereto, the successive transversals extending to the plating on opposite sides of the plane of the flange of the angle iron.
  • the combination comprising a wall consisting of steel plating and a brace therefor including an angle iron having one flange spaced from the plating and parallel thereto and the other flange serrated forming a series of transversals of substantial length extending at an angle to the plating and including flanged ends welded to the plating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Optics & Photonics (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US176047A 1934-10-18 1937-11-23 Welded construction Expired - Lifetime US2142945A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE431110D BE431110A (en)van) 1937-11-23
NL52100D NL52100C (en)van) 1937-11-23
FR796431D FR796431A (fr) 1934-10-18 1935-10-16 Perfectionnements aux éléments de renforcement soudés pour navires, ou pour constructions en acier, ou les deux
US176047A US2142945A (en) 1937-11-23 1937-11-23 Welded construction
DE1938A0088442 DE691524C (de) 1937-11-23 1938-11-12 anderen Stahlbauten
GB33064/38A GB521305A (en) 1937-11-23 1938-11-14 Improvements in welded construction for ships
FR49984D FR49984E (fr) 1934-10-18 1938-11-21 Perfectionnements aux éléments de renforcement soudés pour navires, ou pour constructions en acier, ou les deux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US176047A US2142945A (en) 1937-11-23 1937-11-23 Welded construction

Publications (1)

Publication Number Publication Date
US2142945A true US2142945A (en) 1939-01-03

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ID=22642766

Family Applications (1)

Application Number Title Priority Date Filing Date
US176047A Expired - Lifetime US2142945A (en) 1934-10-18 1937-11-23 Welded construction

Country Status (5)

Country Link
US (1) US2142945A (en)van)
BE (1) BE431110A (en)van)
DE (1) DE691524C (en)van)
GB (1) GB521305A (en)van)
NL (1) NL52100C (en)van)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743694A (en) * 1952-02-26 1956-05-01 John A Mcalcer Welded ship hull construction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6483600A (en) * 1999-08-12 2001-03-13 Schelde Maritiem B.V. Collision-resistant structure
US12138894B2 (en) 2020-07-14 2024-11-12 Photon AG Reinforcement structure and process for reinforcement of a panel element
EP3939849A1 (de) * 2020-07-14 2022-01-19 Photon AG Versteifungsstruktur und verfahren für die versteifung eines flächenelementes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743694A (en) * 1952-02-26 1956-05-01 John A Mcalcer Welded ship hull construction

Also Published As

Publication number Publication date
NL52100C (en)van)
DE691524C (de) 1940-05-29
GB521305A (en) 1940-05-17
BE431110A (en)van)

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