WO1985003969A1 - Shingle-like roofing element - Google Patents

Shingle-like roofing element Download PDF

Info

Publication number
WO1985003969A1
WO1985003969A1 PCT/FI1985/000020 FI8500020W WO8503969A1 WO 1985003969 A1 WO1985003969 A1 WO 1985003969A1 FI 8500020 W FI8500020 W FI 8500020W WO 8503969 A1 WO8503969 A1 WO 8503969A1
Authority
WO
WIPO (PCT)
Prior art keywords
pattern
shingle
roofing
bending
sheet
Prior art date
Application number
PCT/FI1985/000020
Other languages
French (fr)
Inventor
Ari Mastokangas
Original Assignee
Mäkelän Peltituote Oy
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 Mäkelän Peltituote Oy filed Critical Mäkelän Peltituote Oy
Publication of WO1985003969A1 publication Critical patent/WO1985003969A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D1/00—Roof covering by making use of tiles, slates, shingles, or other small roofing elements
    • E04D1/26—Strip-shaped roofing elements simulating a repetitive pattern, e.g. appearing as a row of shingles
    • E04D1/265—Strip-shaped roofing elements simulating a repetitive pattern, e.g. appearing as a row of shingles the roofing elements being rigid, e.g. made of metal, wood or concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/24—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like
    • E04D3/30—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of metal

Definitions

  • the present invention relates to a shingle-pattern roofing sheet manufactured of sheet metal profile by means of bending or press-forming, wherein the strength and ductility properties of the sheet material are utilized in order to achieve an advantageous, durable and attractive shingle-like appearance.
  • roof deck materials and elements are used for roofing, for example tile, minerit board, sheet metal etc.
  • tile is becoming obsolete owing . to high costs and difficulties in the installation work.
  • Minerit boards have not gained much popularity, partly because they are expensive and their durability is weak, and partly because their raw material contains asbestos.
  • Sheet metal roofs are made of smooth sheet metal or corrugated plate; they can be for instance tile imitations made of sheet metal having the form of sine curve and being compressed into form by means of stretching or bending.
  • the prior art sheet metal roofing elements include a large variety of different form and structure designs.
  • the Swedish Patent Publication No. 166 921 introduces corrugated plates comprising several parallel riser members and therebetween, at a lower l evel , other separate members, and the side edges of the riser members are provided with means for coupling the plates together in succession.
  • the Finnish Patent Publication No. 50 728 introduces a building element for roofing, wherein the elements are provided with means for joining a chosen number of plates together in a row in succession, in two directions which are vertical to each other.
  • the building elements of the said invention are step-like, and the means for joining the plates together comprise a tongue and a groove.
  • the step-like members of the said patent application are formed of assembled portions, the assembling whereof is difficult, complicated and expensive, and requires special equipment for carrying out the assembly work.
  • the US Patent Publication No. 3 875 715 introduces a prefabricated sheet metal roofing module comprising specially shaped planar steps. At right angles to the steps there are joining compression junctures.
  • German Patent Application No. 2 404 515 introduces a roof element characterized by an appearance resembling a flake or a roof tile.
  • the object of the present invention is to elminate the drawbacks of the prior art roofing materials.
  • the roofing element according to the present invention is not only durable and practical but also attractive, because the pattern gives an impression of a shingle roof.
  • the shape of the element allows for press-forming the step-like profile by means of bending, without stretching the material.
  • the shingle-like roofing element of the invention is developed with the aim to remove the drawbacks existing in the prior art.
  • the invention is characterized by the novel features apparent from the patent claim 1.
  • the greatest advantage of the present invention is that the longitudinal bending strength of the shingle-like roofing element of the invention is essentially improved as compared to the prior art.
  • the sheathing can be spaced remarkably wider than berfore. This saves the material expenses and makes both the planning and installation of the roof structure easier.
  • the advantegous shape of the bending angle of the shingle roof profile also helps at the manufacturing stage of the roofing element, because the shape allows for press-forming the shingle-like step by means of bending, without having to stretch the material in order to create the profile.
  • Figure 2 is a cross-sectional view of the element of figure 1.
  • Figure 1 illustrates the shingle roof element seen askant from above.
  • the roof pattern resembles the surface pattern of a shingle roof, where the shingles 1 are formed of octagonal steps 2 which are bent to opposite directions.
  • the bent sides of the successive steps are made so that the bending directions 3 and 4 of the sides of the steps point to opposite directions, which shape arrangement substantially improves the longitudinal bending strength of the roofing element.
  • Figure 2 illustrates a cross-sectional view of the shingle element, where the shingle element is shown in longitudinal section along the line A-A of figure 1.
  • the bending angles of the element steps are chosen so that the sides 5 and 6 , bent to opposite directions, are bent without embossing so that it is unnecessary to stretch the material in order to create the profile.
  • the bending angles are suitably arranged so that every second step has a positeive bending angle ( O ) and the rest have a negative bending andle (-OC).
  • the roofing element is so designed that the shingles are formed for example of larger 7 and smaller 8 rectangles. These rectangles are arranged in adjacent rows 9 so that the adjacent rows are separated from each other by means of inclined trapeziums 10. By varying the lateral angle and the vertical angle of the trapeziums, it is possible to vary the shape of the side profile and the pattern of the roofing element so that the shingle-like appearance can be modified as desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

A shingle-pattern roofing sheet manufactured of sheet metal profile by means of bending or press-forming, the roofing sheet having an advantageous, durable and attractive appearance which is achieved by utilizing the strength and ductility properties of the raw material. The successive steps (2) formed in the sheet metal profile are winding with respect to the direct cross-section of the sheet so that the bending directions (3, 4) of the sides (5, 6) of successive bent steps (2) are essentially divergent, and that the bending angles of the respective sides are preferably chosen so that the step-like pattern can be created without stretching the material, so that every second step has a positive bending angle (alpha) and the rest have a negative bending angle (alpha).

Description

SHINGLE-LIKE ROOFING ELEMENT
The present invention relates to a shingle-pattern roofing sheet manufactured of sheet metal profile by means of bending or press-forming, wherein the strength and ductility properties of the sheet material are utilized in order to achieve an advantageous, durable and attractive shingle-like appearance.
At present a large variety of roof deck materials and elements are used for roofing, for example tile, minerit board, sheet metal etc. Among these roofing materials, tile is becoming obsolete owing. to high costs and difficulties in the installation work.
Minerit boards have not gained much popularity, partly because they are expensive and their durability is weak, and partly because their raw material contains asbestos.
Sheet metal roofs, are made of smooth sheet metal or corrugated plate; they can be for instance tile imitations made of sheet metal having the form of sine curve and being compressed into form by means of stretching or bending. As a whole, the prior art sheet metal roofing elements include a large variety of different form and structure designs.
The Swedish Patent Publication No. 166 921 introduces corrugated plates comprising several parallel riser members and therebetween, at a lower l evel , other separate members, and the side edges of the riser members are provided with means for coupling the plates together in succession.
The Finnish Patent Publication No. 50 728 introduces a building element for roofing, wherein the elements are provided with means for joining a chosen number of plates together in a row in succession, in two directions which are vertical to each other. In the direction parallel to the wall or the roof inclination, the building elements of the said invention are step-like, and the means for joining the plates together comprise a tongue and a groove.
The step-like members of the said patent application are formed of assembled portions, the assembling whereof is difficult, complicated and expensive, and requires special equipment for carrying out the assembly work.
The US Patent Publication No. 3 875 715 introduces a prefabricated sheet metal roofing module comprising specially shaped planar steps. At right angles to the steps there are joining compression junctures.
The German Patent Application No. 2 404 515 introduces a roof element characterized by an appearance resembling a flake or a roof tile.
One of the drawbacks of the prior art roofing methods has been the fact that the bending strength of the various roofing materials has been poor. The employed materials are particularly sensitive to the growth of the longitudinal moment, so that for instance the weight of snow has made the element bend. Consequently it has been necessary to space the supporting structures at short intervals on the roof frame. Round forms are also easily damaged during handling, and their installation is cumbersome. It has proved particularly difficult to seal the screw joints of roofing elments with a round-shaped profile.
The object of the present invention is to elminate the drawbacks of the prior art roofing materials. The roofing element according to the present invention is not only durable and practical but also attractive, because the pattern gives an impression of a shingle roof. The shape of the element allows for press-forming the step-like profile by means of bending, without stretching the material.
The shingle-like roofing element of the invention is developed with the aim to remove the drawbacks existing in the prior art. The invention is characterized by the novel features apparent from the patent claim 1.
The greatest advantage of the present invention is that the longitudinal bending strength of the shingle-like roofing element of the invention is essentially improved as compared to the prior art. By employing the shingle roof of the invenntion, the sheathing can be spaced remarkably wider than berfore. This saves the material expenses and makes both the planning and installation of the roof structure easier.
The advantegous shape of the bending angle of the shingle roof profile also helps at the manufacturing stage of the roofing element, because the shape allows for press-forming the shingle-like step by means of bending, without having to stretch the material in order to create the profile.
In the following the shingle-like roofing element of the invention is explained with reference to the appended drawings, where Figure 1 is a top-side view illustration of the roofing element of the invention, and
Figure 2 is a cross-sectional view of the element of figure 1.
Figure 1 illustrates the shingle roof element seen askant from above. In top-side view, the roof pattern resembles the surface pattern of a shingle roof, where the shingles 1 are formed of octagonal steps 2 which are bent to opposite directions. The bent sides of the successive steps are made so that the bending directions 3 and 4 of the sides of the steps point to opposite directions, which shape arrangement substantially improves the longitudinal bending strength of the roofing element.
Figure 2 illustrates a cross-sectional view of the shingle element, where the shingle element is shown in longitudinal section along the line A-A of figure 1. The bending angles of the element steps are chosen so that the sides 5 and 6 , bent to opposite directions, are bent without embossing so that it is unnecessary to stretch the material in order to create the profile.
The bending angles are suitably arranged so that every second step has a positeive bending angle ( O ) and the rest have a negative bending andle (-OC). The roofing element is so designed that the shingles are formed for example of larger 7 and smaller 8 rectangles. These rectangles are arranged in adjacent rows 9 so that the adjacent rows are separated from each other by means of inclined trapeziums 10. By varying the lateral angle and the vertical angle of the trapeziums, it is possible to vary the shape of the side profile and the pattern of the roofing element so that the shingle-like appearance can be modified as desired.
The above specification is a description of one preferred embodiment of the invention. Naturally the shingle-pattern roofing element of the invention, manufactured by bending or press-forming, allows for a variety of modifications wihtin the scope of the appended patent claims.

Claims

PATENT CLAIMS
1. A shingle-pattern roofing sheet manufactured of sheet metal profile by means of bending or press-forming, the roofing sheet having an advantageous, durable and attractive appearance which is achieved by utilizing the strength and ductility properties of the raw material, c h a r a c t e r i z e d in that on the basis of the strength properties of the material , the sheet metal is shaped into a shingle-like pattern (1) wherein the successive steps (2) formed in the sheet metal profile are winding with respect to the direct cross-section of the sheet so that the bending directions (3, 4) of the sides (5, 6) of successive bent steps (2) are essentially divergent, and that the bending angles of the respective sides are preferably chosen so that the step-like pattern can be created without stretching the material , so that every second step has a positive bending angle (o and the rest have a negative bending angle (-o ).
2. The shingle-patterns roofing sheet of figure 1, c h a¬ r a c t e r i z e d in that the shing e-pattern roofing element is designed so that the shingles are formed for example of larger (7) and smaller (8) rectangles which are arranged in adjacent rows (9) so tha the adjacent rows are separated from each other by means of inclined trapeziums (10) which provide the roofing element, when seen from the side, with a stepwise winding profile (11), and that the lateral and vertical angles of the divergent sides of the trapezium portions can be adjusted preferably so that the shaping of the side profile and pattern of the roofing element becomes easy and the shingle-like appearance of the pattern can be changed as desired.
PCT/FI1985/000020 1984-03-02 1985-03-04 Shingle-like roofing element WO1985003969A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI840853A FI840853A (en) 1984-03-02 1984-03-02 STABSPAONGFORMIGT TAKELEMENT.
FI840853 1984-03-02

Publications (1)

Publication Number Publication Date
WO1985003969A1 true WO1985003969A1 (en) 1985-09-12

Family

ID=8518654

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1985/000020 WO1985003969A1 (en) 1984-03-02 1985-03-04 Shingle-like roofing element

Country Status (4)

Country Link
FI (1) FI840853A (en)
NO (1) NO854286L (en)
SE (1) SE8504822D0 (en)
WO (1) WO1985003969A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0956407A1 (en) * 1996-12-12 1999-11-17 Kimmo Juhani Sahramaa Tongue and groove multiple step panel
KR101263301B1 (en) * 2012-09-25 2013-05-10 (유)대한철강 Metal shingle sheet
PL423223A1 (en) * 2017-10-20 2019-04-23 Bratex Dachy Spolka Z Ograniczona Odpowiedzialnoscia Spolka Komandytowa Modular metal roofing tile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB580572A (en) * 1944-06-07 1946-09-12 Robert James Symons Improvements connected with roofing, walling and the like sheets or panels
US3754366A (en) * 1971-11-17 1973-08-28 J Jansson Stepped roofing sheets
US4130974A (en) * 1977-02-16 1978-12-26 Alcan Aluminum Corporation Siding panels and the method of production
EP0006262A1 (en) * 1978-06-15 1980-01-09 André Legros Cladding element for roofs and walls
US4250728A (en) * 1978-04-12 1981-02-17 King Eric G Apparatus and method for forming steps in profiled sheets of material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB580572A (en) * 1944-06-07 1946-09-12 Robert James Symons Improvements connected with roofing, walling and the like sheets or panels
US3754366A (en) * 1971-11-17 1973-08-28 J Jansson Stepped roofing sheets
US4130974A (en) * 1977-02-16 1978-12-26 Alcan Aluminum Corporation Siding panels and the method of production
US4250728A (en) * 1978-04-12 1981-02-17 King Eric G Apparatus and method for forming steps in profiled sheets of material
EP0006262A1 (en) * 1978-06-15 1980-01-09 André Legros Cladding element for roofs and walls

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0956407A1 (en) * 1996-12-12 1999-11-17 Kimmo Juhani Sahramaa Tongue and groove multiple step panel
EP0956407A4 (en) * 1996-12-12 2001-02-21 Kimmo Juhani Sahramaa Tongue and groove multiple step panel
KR101263301B1 (en) * 2012-09-25 2013-05-10 (유)대한철강 Metal shingle sheet
PL423223A1 (en) * 2017-10-20 2019-04-23 Bratex Dachy Spolka Z Ograniczona Odpowiedzialnoscia Spolka Komandytowa Modular metal roofing tile

Also Published As

Publication number Publication date
FI840853A0 (en) 1984-03-02
SE8504822L (en) 1985-10-16
NO854286L (en) 1985-10-28
SE8504822D0 (en) 1985-10-16
FI840853A (en) 1985-09-03

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