US736718A - Concrete-and-iron girder, &c. - Google Patents
Concrete-and-iron girder, &c. Download PDFInfo
- Publication number
- US736718A US736718A US14633203A US1903146332A US736718A US 736718 A US736718 A US 736718A US 14633203 A US14633203 A US 14633203A US 1903146332 A US1903146332 A US 1903146332A US 736718 A US736718 A US 736718A
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- US
- United States
- Prior art keywords
- concrete
- iron
- girder
- insertions
- irons
- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
Definitions
- This invention relates to roofs, beams, girders, and like structures (hereinafter included in the term girder) of concrete and iron.
- a girder according to this invention is constructed of concrete with iron or other snitable metal insertions.
- iron or other snitable metal insertions are used ot bearing or supporting plates of iron or other suitable metal, the placing of the metal insertions in tensional strain, and its method of construe tion with the aid of a mold or like structure without intermediate supportthat is to say, which is scifi-supporting;r between the points of support of the girdcr.
- metal insertions consistingof metal of bar, round, or other suitable section, ure embedded while under tensional strain in the concrete and the bearing portions oi the girder are formed by means of the metal. insertions, which project from the concreteat both ends of the girder and are connected to met-al pieces of suitable section that rest freely on the supports of the girder.
- the aforesaid self-supportingr mold or like structure is preferably formed of wood in combination with tho metalinsertions that are intended to strengthen the concrete ofthe gir-der.
- Figures 1 and 2 are similar longitudinal sectionsof a concrete-andiron girder according to this invention, il1us- Serial Xo. 148,332. (lo model.) t ff trating the same respectively before and after placing under tensional strain the metal insertions, which consist in this case of angleiron.
- Figs. 3, 4, and 5 are cross-sections respectively on the lines A B, C I), and E F ol Fig. .1.
- Figs. 6, 7, an 8 illustrate the same form of girder when flat or bar iron is used instead of angle-iron.
- a represents planksor boards forming tho
- These metal insertions b are riveted at their ends, that projectv freely from the mold or concrete body, to a channeiiron c in such a manner as to leave a predetermined suitable space between the two angle-irons b.
- the channel-iron c which forms the bearing-plate or wall-plate resting free on the vertical Wall or like support., is riveted with both of its side flanges to angle-irons d, which project for a suitable distance over the wall or like support and which are situated in the npper portion of the concrete gin-der when the girder is iinished.
- the mold-boards a that serve to form the sides of the girder, are pressed by suitable means, such as bya. screwbolt g, against the angle-irons d.
- suitable means such as bya. screwbolt g
- the iron insertions b are drawn down by means of suitable ine:1ns, ⁇ s'iielr"asbone or more screw-bolts(thenumber of such bolts bo ing determined by the length ofthe ;;irder,) ⁇ which extend through the mold and which may be connected with the iron insertions in anysnitable mannerfor example, as in the case shown, by means of a hooked head ⁇ formed in the boltfengagingwith the iw' sertions b.
- the concrete is now placed into the mold, which has been rendered entirely self-supporting by this means.
- the concrete may beplaced only in the space above the iron insertions, in which case av ,cirder is produced having.,y a curved nnder side and in which the iron insertions are visible on the said nnder side, or the iron insertions to be entirely covered with concrete, so that they will be situated in the interior of the girder, in which case the girder may have eithera straight or a curved under side.
- a built-np grdcr comprising a longitudinally-extending reinforcing insertion nuder tension embedded in a mass of plastic ma terial,and bearing-plates projecting from each end thereof.
- a built-np girder comprisinga reinforcing insertion under tension embedded in a tension embedded in a mass of plastic mate rial, a channel-iron secured to each end of said pair of angle-irons, and a pair of angleirons secured to said channelirons and projecting above the same.
- a built-up girder comprising a pair of longitudinally-extending angle-irons under tension embedded in a mass of plastic material, said angleirons being snit-ably spaced apart, a channel-iron secured to each end of said pair-of angle-irons, and a pair of angleirons secured to each of said channel-irons and projecting above the latter.
Description
SEARCH ROOM PUBMED AUG. 1s, 1903. t
I n. GBIMM.- CONCRETE Nn IRON ummm, au.
APPLXOAIXOI .ULEB lll. 5. 1903.
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CONCRETE AND IRON GIRDIIR,l ko.l
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' provenients in Roofs, Beams, Git-ders, and
UNITED STATES Patented August 1s, reos.
PATENT OFFICE.
coNoRETe-AN-IRON emot-1R, sto'.
SPECIFICATION forming part of Letters Patent No. 736,718, dated August 18, 1903.
n mutano nea anni 190s.
To "Il whom it muy concern.-
Be it known that I, RUDoL Grunn, a subject of the Emperor of .\ustria-lluu;zary, residing at Vienna, in the Province of Lower Austria, in the Empire of Austria-Hungary, have invented certain new and useful Im- Like Structures of Concrete and Iron; and I do hereby declare the followingy to be a full," clear, and exactl description of the'invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.
This invention relates to roofs, beams, girders, and like structures (hereinafter included in the term girder) of concrete and iron.
A girder according to this invention is constructed of concrete with iron or other snitable metal insertions. Among its distinguishing features are the use ot bearing or supporting plates of iron or other suitable metal, the placing of the metal insertions in tensional strain, and its method of construe tion with the aid of a mold or like structure without intermediate supportthat is to say, which is scifi-supporting;r between the points of support of the girdcr.
In constructing a concrete-andiron girder in accordance with this invention its metal insertions, consistingof metal of bar, round, or other suitable section, ure embedded while under tensional strain in the concrete and the bearing portions oi the girder are formed by means of the metal. insertions, which project from the concreteat both ends of the girder and are connected to met-al pieces of suitable section that rest freely on the supports of the girder.
The aforesaid self-supportingr mold or like structure is preferably formed of wood in combination with tho metalinsertions that are intended to strengthen the concrete ofthe gir-der.
In the accompanying drawings, which are given solely by way of example for the purpose of enabling this invention to be more clearly understood, Figures 1 and 2 are similar longitudinal sectionsof a concrete-andiron girder according to this invention, il1us- Serial Xo. 148,332. (lo model.) t ff trating the same respectively before and after placing under tensional strain the metal insertions, which consist in this case of angleiron. Figs. 3, 4, and 5 are cross-sections respectively on the lines A B, C I), and E F ol Fig. .1. Figs. 6, 7, an 8 illustrate the same form of girder when flat or bar iron is used instead of angle-iron.
a represents planksor boards forming tho These metal insertions b are riveted at their ends, that projectv freely from the mold or concrete body, to a channeiiron c in such a manner as to leave a predetermined suitable space between the two angle-irons b. The channel-iron c, which forms the bearing-plate or wall-plate resting free on the vertical Wall or like support., is riveted with both of its side flanges to angle-irons d, which project for a suitable distance over the wall or like support and which are situated in the npper portion of the concrete gin-der when the girder is iinished. The mold-boards a, that serve to form the sides of the girder, are pressed by suitable means, such as bya. screwbolt g, against the angle-irons d. Before the concrete is placed in the mold the iron insertions b are drawn down by means of suitable ine:1ns,`s'iielr"asbone or more screw-bolts(thenumber of such bolts bo ing determined by the length ofthe ;;irder,)` which extend through the mold and which may be connected with the iron insertions in anysnitable mannerfor example, as in the case shown, by means of a hooked head` formed in the boltfengagingwith the iw' sertions b. 'I he boards a, forming the mold, v are caused by the bolts g and the angle-irons d, riveted to the channel-irons cof the wallplate, to oder resistance to an excessive inward sliding on the wall-plates causedb the drawing down of the iron insertions so tensional strain, whereby the boardsa nre in their turn placed under strain. The connection of the bolts y (which are situated obliqnely between the mold-boards a) with the angle-irons l is effected by means of angleirons h, which are arranged across the said angle-irons and riveted to a bar and serve as abutments for the bolts g. The concrete is now placed into the mold, which has been rendered entirely self-supporting by this means. If desired,the concrete may beplaced only in the space above the iron insertions, in which case av ,cirder is produced having.,y a curved nnder side and in which the iron insertions are visible on the said nnder side, or the iron insertions to be entirely covered with concrete, so that they will be situated in the interior of the girder, in which case the girder may have eithera straight or a curved under side. When the concrete surrounding,r the tensoned insertonsbas becolne hard and the mold is to be removed, the boltsf and gareloosenc,wliei-en pon thebox orming the moldganbemdrommwernermi 1. A built-np grdcr comprising a longitudinally-extending reinforcing insertion nuder tension embedded in a mass of plastic ma terial,and bearing-plates projecting from each end thereof.
2. A built-np girder comprisinga reinforcing insertion under tension embedded in a tension embedded in a mass of plastic mate rial, a channel-iron secured to each end of said pair of angle-irons, and a pair of angleirons secured to said channelirons and projecting above the same.
5. A built-up girder comprising a pair of longitudinally-extending angle-irons under tension embedded in a mass of plastic material, said angleirons being snit-ably spaced apart, a channel-iron secured to each end of said pair-of angle-irons, and a pair of angleirons secured to each of said channel-irons and projecting above the latter.
In testimony that I claim the my invention I have signed my name in presfregoingas ence of two subscribing witnesses. y y
RUDOLF GRIMM.
Witnesses:
JOSEF RnBAscn, j ALvEsro S. Houmt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14633203A US736718A (en) | 1903-03-05 | 1903-03-05 | Concrete-and-iron girder, &c. |
Applications Claiming Priority (1)
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---|---|---|---|
US14633203A US736718A (en) | 1903-03-05 | 1903-03-05 | Concrete-and-iron girder, &c. |
Publications (1)
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US736718A true US736718A (en) | 1903-08-18 |
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US14633203A Expired - Lifetime US736718A (en) | 1903-03-05 | 1903-03-05 | Concrete-and-iron girder, &c. |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2692034A (en) * | 1951-03-30 | 1954-10-19 | Jr William J Tidwell | Temporary form support for building concrete bridges |
US3003217A (en) * | 1957-02-25 | 1961-10-10 | Ben C Gerwick Inc | Apparatus for manufacturing prestressed concrete members |
US3013322A (en) * | 1958-03-19 | 1961-12-19 | Robert D Carr | Apparatus for depressing or deflecting wire, cable, or strand |
US3049786A (en) * | 1958-05-28 | 1962-08-21 | Cordis W Jones | Apparatus for making prestressed structural members |
US3311210A (en) * | 1965-10-12 | 1967-03-28 | Navigation Computer Corp | Sloping panel keyboard mount |
US3712010A (en) * | 1970-08-17 | 1973-01-23 | Univ Iowa State Res Found | Prestressed metal and concrete composite structure |
US8800232B1 (en) * | 2011-04-04 | 2014-08-12 | LEK Innovations, LLC | Flange shear connection for precast concrete structures |
-
1903
- 1903-03-05 US US14633203A patent/US736718A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2692034A (en) * | 1951-03-30 | 1954-10-19 | Jr William J Tidwell | Temporary form support for building concrete bridges |
US3003217A (en) * | 1957-02-25 | 1961-10-10 | Ben C Gerwick Inc | Apparatus for manufacturing prestressed concrete members |
US3013322A (en) * | 1958-03-19 | 1961-12-19 | Robert D Carr | Apparatus for depressing or deflecting wire, cable, or strand |
US3049786A (en) * | 1958-05-28 | 1962-08-21 | Cordis W Jones | Apparatus for making prestressed structural members |
US3311210A (en) * | 1965-10-12 | 1967-03-28 | Navigation Computer Corp | Sloping panel keyboard mount |
US3712010A (en) * | 1970-08-17 | 1973-01-23 | Univ Iowa State Res Found | Prestressed metal and concrete composite structure |
US8800232B1 (en) * | 2011-04-04 | 2014-08-12 | LEK Innovations, LLC | Flange shear connection for precast concrete structures |
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