US2317454A - Reinforcing bar for concrete structures - Google Patents
Reinforcing bar for concrete structures Download PDFInfo
- Publication number
- US2317454A US2317454A US345637A US34563740A US2317454A US 2317454 A US2317454 A US 2317454A US 345637 A US345637 A US 345637A US 34563740 A US34563740 A US 34563740A US 2317454 A US2317454 A US 2317454A
- Authority
- US
- United States
- Prior art keywords
- reinforcing bar
- section
- concrete structures
- width
- concrete
- 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
Links
- 230000003014 reinforcing effect Effects 0.000 title description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
Definitions
- This invention relates to reinforcing bars and, more particularly, to those which are embedded in concrete and adapted to resist longitudinal movement therein and also the twisting action imposed thereby.
- reinforcing bars for concrete structures are composed of sections which readily lend themselves to twisting and, when installed in the concrete in the twisted condition, serve to give the maximum resistance against longitudinal movement of the bar in the concrete when the bar is subjected to tension.
- An early form comprises two round sections which are twisted up together under tension: but this has not been successful because when subjected to compressive stresses in their length, they tend to separate.
- Another form comprises a single unitary structure embodyins two substantially round portions which are Joined by a web; and it is after this form that the device of the present invention has been designed.
- Another object is the provision of a device of the class described which can be easily rolled on mills of existing design and cold-twisted after rolling.
- Figure2 is a crosssection
- the reinforcing bar of the present invention comprises a twisted bar having'a somewhat flattened cross section such that the width thereof is approximately twice the height. That is to say, the dimension 1 is approximately twice the dimension u.
- the height. designated by the character a is formed on either side of the mid-section of the reinforcing bar by substantially round or rod-shaped elements 2 and l, the width 0 of each of which shaped elements 2 and 3 are connected together by a portion 4 which is substantially rectangular in section, the width w thereof being substantially the same as the height u of the round or rod-shaped elements 2 and 3 and therefore approximately the same as either the height at or the width 12 of the latter.
- the thickness of the rectangular mid-section, designated at s, is approximately one-third the width 10 thereof, and accordingly approximately one-third of the height u of each of the round or rod-shaped portions 2 and 3.
- Such a cross section may be easily rolled, and when twisted takes the form illustrated in Figure 3.
- two substantially round-sectioned iron bars connected by an integral intermediate portion which, when twisted up under tension, not only resists longitudinal movement in the concrete but withstands the untwisting action upon it by the latwr
- This relationship permits the use of a relatively thin web portion 4 as compared with the width thereof to permit easy twisting, but one which is at the same time sufllcient to prevent diiierential slipping under high bond stresses.
- the portion 4 carries integral metallic protuberances which provide for increased rigidity.
- a reinforcing bar for concrete structures comprising a twisted bar having a somewhat flattened cross section such that the width thereof is approximately twice the height, the mid-section of said bar being rectangular in cross-section and the remaining and adjoining portions being substantially oval and of a height which is approximately one-half the total width of said bar as a unit, the width of said mid-section being approximately the same as the height of said ad- Joining substantially oval portions, the thickness of said mid-section being approxima third the width thereof and alterna y onetuberances on opposite sides of the mid-portion
Description
April 27, 1943.
GIG. GREULICH 2,317,454
REINFORCING BAR FOR CONCRETE STRUCTURES Filed July 15, 1940 Patented Apr. 27, 1943 REINFORCING BAR FOR CONCRETE S CTURES Gerald G. Greulich, Mount Lebanon, Pa.
Application July 15, 1940, Serial No. 345,637
1 Claim.
This invention relates to reinforcing bars and, more particularly, to those which are embedded in concrete and adapted to resist longitudinal movement therein and also the twisting action imposed thereby.
There are, in the prior art, instances wherein reinforcing bars for concrete structures are composed of sections which readily lend themselves to twisting and, when installed in the concrete in the twisted condition, serve to give the maximum resistance against longitudinal movement of the bar in the concrete when the bar is subiected to tension. An early form comprises two round sections which are twisted up together under tension: but this has not been successful because when subjected to compressive stresses in their length, they tend to separate. Another form comprises a single unitary structure embodyins two substantially round portions which are Joined by a web; and it is after this form that the device of the present invention has been designed.
It is an object of the present invention to provide an inexpensive reinforcing bar for concrete which will successfully resist all of the stresses imposed upon it.
Another object is the provision of a device of the class described which can be easily rolled on mills of existing design and cold-twisted after rolling.
The foregoing and other objects will become morehmhapparent after referring to the drawing, in w Figure 1 is a plan of the rolled section of the device of the invention prior to twisting;
Figure2is a crosssection; and
I 'igure3is avicwsimilartoligure ibutafter the rolled section has been twisted.
Referring more particularly to Figure 2, it will be observed that in section the reinforcing bar of the present invention comprises a twisted bar having'a somewhat flattened cross section such that the width thereof is approximately twice the height. That is to say, the dimension 1 is approximately twice the dimension u. The height. designated by the character a, is formed on either side of the mid-section of the reinforcing bar by substantially round or rod-shaped elements 2 and l, the width 0 of each of which shaped elements 2 and 3 are connected together by a portion 4 which is substantially rectangular in section, the width w thereof being substantially the same as the height u of the round or rod-shaped elements 2 and 3 and therefore approximately the same as either the height at or the width 12 of the latter. The thickness of the rectangular mid-section, designated at s, is approximately one-third the width 10 thereof, and accordingly approximately one-third of the height u of each of the round or rod-shaped portions 2 and 3. Such a cross section may be easily rolled, and when twisted takes the form illustrated in Figure 3. Thus there is provided two substantially round-sectioned iron bars connected by an integral intermediate portion which, when twisted up under tension, not only resists longitudinal movement in the concrete but withstands the untwisting action upon it by the latwr This relationship permits the use of a relatively thin web portion 4 as compared with the width thereof to permit easy twisting, but one which is at the same time sufllcient to prevent diiierential slipping under high bond stresses.
Referring to Figure 1, at spaced intervals and on alternate sides thereof, the portion 4 carries integral metallic protuberances which provide for increased rigidity.
While I have shown and described a specific embodiment of the present invention, it will be seenthatIdo notwishtobelimitedexactly thereto, since various modifications may be made without departing from the scope of the invention as defined in the appended claim.
I claim:
A reinforcing bar for concrete structures, comprising a twisted bar having a somewhat flattened cross section such that the width thereof is approximately twice the height, the mid-section of said bar being rectangular in cross-section and the remaining and adjoining portions being substantially oval and of a height which is approximately one-half the total width of said bar as a unit, the width of said mid-section being approximately the same as the height of said ad- Joining substantially oval portions, the thickness of said mid-section being approxima third the width thereof and alterna y onetuberances on opposite sides of the mid-portion
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US345637A US2317454A (en) | 1940-07-15 | 1940-07-15 | Reinforcing bar for concrete structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US345637A US2317454A (en) | 1940-07-15 | 1940-07-15 | Reinforcing bar for concrete structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2317454A true US2317454A (en) | 1943-04-27 |
Family
ID=23355845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US345637A Expired - Lifetime US2317454A (en) | 1940-07-15 | 1940-07-15 | Reinforcing bar for concrete structures |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2317454A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2606439A (en) * | 1939-05-15 | 1952-08-12 | Sosna Ferdynand | Twisted reinforcing bar |
| DE1132702B (en) * | 1956-05-11 | 1962-07-05 | Kloeckner Huettenwerk Haspe Ag | Concrete rebar |
| EP0277093A2 (en) * | 1987-01-30 | 1988-08-03 | von Moos Stahl AG | Reinforcing steel element, method of manufacture, and means therefor |
| US9243406B1 (en) * | 2015-01-21 | 2016-01-26 | TS—Rebar Holding, LLC | Reinforcement for reinforced concrete |
| US20190071862A1 (en) * | 2016-04-08 | 2019-03-07 | Wobben Properties Gmbh | Connection element, wind turbine tower ring segment and method for connecting two wind turbine tower ring segments |
-
1940
- 1940-07-15 US US345637A patent/US2317454A/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2606439A (en) * | 1939-05-15 | 1952-08-12 | Sosna Ferdynand | Twisted reinforcing bar |
| DE1132702B (en) * | 1956-05-11 | 1962-07-05 | Kloeckner Huettenwerk Haspe Ag | Concrete rebar |
| EP0277093A2 (en) * | 1987-01-30 | 1988-08-03 | von Moos Stahl AG | Reinforcing steel element, method of manufacture, and means therefor |
| EP0277093A3 (en) * | 1987-01-30 | 1989-01-04 | Moos Stahl Ag Von | Reinforcing steel element, method of manufacture, and means therefor |
| US9243406B1 (en) * | 2015-01-21 | 2016-01-26 | TS—Rebar Holding, LLC | Reinforcement for reinforced concrete |
| CN106030005A (en) * | 2015-01-21 | 2016-10-12 | 蒂斯雷巴尔控股有限责任公司 | Reinforcement for reinforced concrete |
| CN106030005B (en) * | 2015-01-21 | 2017-08-22 | 蒂斯雷巴尔控股有限责任公司 | Stiffener for reinforced-concrete |
| US20190071862A1 (en) * | 2016-04-08 | 2019-03-07 | Wobben Properties Gmbh | Connection element, wind turbine tower ring segment and method for connecting two wind turbine tower ring segments |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2929238A (en) | Masonry joint mesh strip | |
| US1804132A (en) | Construction unit | |
| US3440792A (en) | Combination stirrup and spacer for re-enforced concrete pipe and like structure | |
| US2317454A (en) | Reinforcing bar for concrete structures | |
| US2565875A (en) | Ribbed metal cross bridging | |
| US1366470A (en) | Wall-tie | |
| CH392025A (en) | Component | |
| US2703644A (en) | Parallel wire belting | |
| DE2044041B2 (en) | Connection between cladding mats for mine galleries - is made by interlocking loops at ends of longitudinal wires of mesh | |
| US2418383A (en) | Bar stock and reinforcing bar | |
| GB925236A (en) | Structural building units | |
| DE1484963A1 (en) | Spacer for reinforcement bars | |
| DE680627C (en) | Flat vaulted reinforced concrete ceiling | |
| GB290431A (en) | Improvements in connection with needles and in the manufacture of the same | |
| SU815214A2 (en) | Cast-in part set into ferroconcrete articles | |
| DE711779C (en) | Scaffolding rope made of wire | |
| DE2949754B1 (en) | Wire rope | |
| US2150798A (en) | Continuous masonry tie | |
| GB1215989A (en) | Improvements in or relating to lattice girders for reinforcing slab-form concrete structural units | |
| US1789290A (en) | Wire fastener | |
| GB295306A (en) | A new or improved metallic fabric for reinforcing concrete structures applicable forother building purposes | |
| US2271920A (en) | Wear and reinforcing member for concrete floors | |
| GB355595A (en) | Improvements in metal reinforcing fabrics for concrete roadway foundations and the like | |
| GB307380A (en) | Improvements in and relating to reinforced concrete columns | |
| US962488A (en) | Concrete reinforcement. |