US2901807A - Fixing device for holding reinforcing rods in a casting mold - Google Patents

Fixing device for holding reinforcing rods in a casting mold Download PDF

Info

Publication number
US2901807A
US2901807A US400298A US40029853A US2901807A US 2901807 A US2901807 A US 2901807A US 400298 A US400298 A US 400298A US 40029853 A US40029853 A US 40029853A US 2901807 A US2901807 A US 2901807A
Authority
US
United States
Prior art keywords
reinforcing rods
fixing
casting mold
shanks
slab
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
US400298A
Inventor
Helmerson Knut Helmer
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.)
Casius Corp Ltd
Original Assignee
Casius Corp Ltd
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 SE2901807X priority Critical
Application filed by Casius Corp Ltd filed Critical Casius Corp Ltd
Application granted granted Critical
Publication of US2901807A publication Critical patent/US2901807A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/18Spacers of metal or substantially of metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/022Means for inserting reinforcing members into the mould or for supporting them in the mould
    • B28B23/024Supporting means

Description

Sept. 1, 1959 K. H. HELMERSON 2,901,807

FIXING DEVICE FOR HOLDING REINFORCING RODS IN A CASTING MOLD Filed D80. 24, 1955 [N VIN I OR Jfiwfr HELMER EELMRSQM 4 TTORNEK United States Patent Ofiice Patented Sept. 1, 1959 FIXING DEVICE FOR HOLDING REINFORCING RODS IN A CASTING MOLD Knut Helmer Helmersou, Skelleftehanm, Sweden, as-

signor, by mesne assignments, to Casius Corporation "Limited, Montreal, Quebec, Canada This invention concerns the arrangement of reinforcements in light-weight concrete slabs.

"In the production of light-weight concrete slabs, particularly of the kind which are of considerable length, it is customary to employ a reinforcement in the form of a mat or cage consisting of iron reinforcing rods which cross one another. Known reinforcements of this kind considerably increase the difficulty of dividing up the light-weight concrete slab by sawing or like methods, however, as the reinforcing rods, in distinction to the lightweight concrete body itself, cannot be cut with ordinary Woodworking tools. It has already been proposed to solve this problem by assembling the reinforcing mats or cages from a number of parallel iron reinforcing rods on the one hand and a number of transverse connecting members of a material such as wood which is practically as easy to work as the light-weight concrete body itself, on the other hand, in order to obtain a slab that can be divided in the longitudinal direction by sawing or the like. This method of procedure has also been found satisfactory in itself, but it naturally complicates the production process to a certain extent. In addition hereto the connecting members remain in the light-weight concrete, and consequently this method does not offer an ideal solution. The present invention has for its purpose to provide a more rational solution of the problem in question.

The invention relates to the production of reinforced light-weight concrete slabs having a considerable length in relation to their other dimensions. This production is mainly characterized therein that a number of separate iron reinforcing rods are fixed in the casting mold in substantially parallel spaced positions with respect to one another during the casting of the slab, by means of at least two fixing devices spaced in the longitudinal direction of the iron reinforcing rods so that the reinforcing rods will run in the longitudinal direction of the slab. The fixing devices are removed after the casting of the light-weight concrete when the concrete mass has itself attained the necessary stability to enable it to retain the reinforcing rods in their given positions. Consequently, the reinforcement in the finished slab thus produced will consist exclusively of the longitudinal reinforcing rods and the slab can thus be divided in the longitudinal direc' tion betwen the reinforcing rods without obstruction from reinforcements which are difiicult to cut.

The fixing devices may consist of any desired members connected to the casting mold but preferably each fixing device consists of a fork-shaped slotted bar, e.g. a slotted tube or pipe, tapered at its shank-ends and of substantially circular cross-section, the two shanks of which are located at a distance from one another which exceeds the diameter of the reinforcing rods and are provided with recesses in pairs corresponding to each other to permit the iron reinforcing rods inserted in the shanks to be fixed by turning the bar.

With the foregoing and other objects in view, the invention resides in the novel arrangement and combination of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein described may be rnade within the scope of what isgclaimed without departing from the spirit of the invention. It will be further understood that my invention is susceptible of embodiment in many and various forms, some of which are illustrated in the accompanying drawing, and that the structural details or particular steps of the method herein set forth may be varied to suit particular purposes and still remain within my inventive concept.

The invention will now be more particularly described with reference to the accompanying drawing which shows diagrammatically and in perspective how the separate iron reinforcing rods 1which are to be included in a light-weight concrete slab} indicated by dotted linesare held in parallel, mutually spaced positions in a casting mold (not shown) for the light-weight concrete slab, so that the iron reinforcing rods will run in the longitudinal direction of the slab 2. More particularly, the iron reinforcing rods 1 are held in two fixing devices 3 which hang down into the casting mold and each consists of a tube which is divided from below in a fork-shaped form having two shanks by means of a slot 4 having a greater width than the diameter of the reinforcing rods. At a mutual distance apart along the slot 4, which corresponds to the desired distance between the iron reinforcing rods 1, the shanks of the fixing devices 3 are provided with recesses 5 which are substantially at right angles to the slots 4 and in which the separate reinforcing rods 1 can be fixed by turning the fixing device 3 so that the slot 4 forms an angle with the longitudinal direction of the reinforcing rods.

Each fixing device 3 is provided at its end, which protrudes over the light-weight concrete slab 2., with a handle 6 by means of which the fixing device 3 can be suspended on supporting bars 7 running over the casting mold, for example. These supporting bars 7 may suitably be provided with hook-like holding members 8 which prevent the suspending device 3 from moving in a vertical direction when the iron reinforcing rods should be held in a fixed position during casting.

Thus, with the help of the fixing devices 3 the iron reinforcing rods 1 are fixed in definite positions in relation to the casting mold during the casting of the lightweight conorete slab 2. After the light-weight concrete mass has solidified so that it possesses sufiicient stability itself to retain the iron reinforcing rods 1 in their given positions, the fixing devices 3 are removed by first turning them in the direction of the arrows A so that they are freed from the hooks 8, while the slots 4 come into aligned position with the rods 1 which are above one another in said slots 4. With the slots 4 aligned as stated devices 3 may then be drawn out in an upward direction. The fixing devices 3 may be suitably tapered ofl in the downward direction for facilitating their removal from the lightweight concrete slab.

It is obvious, that the invention is not limited to the employment of the fixing devices described which, however, have been found extremely suitable for their purpose, but that all such alterations and modifications may be made therein which fall within the scope of the invention.

What I claim is:

1. A fixing device for holding reinforcing rods in a casting mold comprising a bar slotted to form two forklike shanks, said two shanks located at a distance from one another which distance exceeds the diameter of the reinforcing rods, a recess formed in each shank, said recesses formed in the diagonally opposite edges thereof, and located at equal distances from the open end of the slotted bar, the pairs of recesses so formed permitting the reinforcing rods inserted between the shanks to be fixedby rotation of the bar.-

2. A fixing device for holding reinforcing rods in a casting mold in position duri'ngcasting comprising a forkshaped? slotted barhaving two substantiallyparallel shanks, the distance betweensaid-" shanks being greater than the diameter of the reinforcing rods, said two shanks being provided in two diagonal edges, one in each shank, with recesses located at equal distances fromthe slotted end ofthe bar, thus forming pairs of recesses permitting the reinforcing-rods inserted between the shanks to be fixed in said recessesby' t-urningof the bar.

3. A fixing device for holding reinforcing rods ina casting mold in position in'the casting operation, comprisinga fork-shaped slotted bar having two substantially parallel shanks and a handle mounted on the non-slotted end' ofthe bar, the distance between said shanks being greater than the diameter of the reinforcing rods, said two shanks being provided in two diagonal edges, one in each shank, with recesses which in both shanks are located at equal distances from the slotted end of the bar, thus formingpairs of recesses permitting the reinforcing rods inserted between the shanks to be fixed in said recesses by turning of the bar by means of said handle.

References Cited in, thefile of this patent UNITED STATES PATIENTS

US400298A 1953-02-18 1953-12-24 Fixing device for holding reinforcing rods in a casting mold Expired - Lifetime US2901807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE2901807X 1953-02-18

Publications (1)

Publication Number Publication Date
US2901807A true US2901807A (en) 1959-09-01

Family

ID=20427734

Family Applications (1)

Application Number Title Priority Date Filing Date
US400298A Expired - Lifetime US2901807A (en) 1953-02-18 1953-12-24 Fixing device for holding reinforcing rods in a casting mold

Country Status (1)

Country Link
US (1) US2901807A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044125A (en) * 1957-02-04 1962-07-17 Detrick M H Co Method of co-moulding brick
US3077362A (en) * 1959-03-30 1963-02-12 Detrick M H Co Plate holder
US3109702A (en) * 1960-09-21 1963-11-05 Detrick M H Co Method of co-moulding brick
US3201846A (en) * 1961-05-31 1965-08-24 Owens Illinois Glass Co Apparatus for supporting a reinforcing mesh in a mold
US3271497A (en) * 1961-04-19 1966-09-06 Elgenstierna Reinhold Magnus Method for producing wall units
EP0179762A1 (en) * 1984-04-30 1986-05-07 United Technologies Corp Apparatus for embedding flexible conduits in molded articles.
US5042218A (en) * 1989-09-25 1991-08-27 Gerald Nasca Re-bar support

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191515834A (en) * 1915-11-09 1916-11-09 Thomas James Mcdowell Improvements in Means for Holding the Reinforcement in the Moulding or Casting of Reinforced Concrete.
GB291838A (en) * 1927-03-02 1928-06-05 Albert William Coveney Improvements in or relating to moulding concrete and to means therefor
GB414290A (en) * 1934-01-01 1934-08-02 William Dzus Improvements in fastening devices
GB521826A (en) * 1938-11-29 1940-05-31 Joah Haigh Walker Improvements in or relating to the laying of reinforced concrete
US2349399A (en) * 1942-03-23 1944-05-23 Awbrey William Powell Reinforcing bar support
FR901688A (en) * 1942-12-29 1945-08-02 Device for laying iron reinforcements in plates of reinforced concrete or other concrete objects
US2571549A (en) * 1949-06-20 1951-10-16 Luther T Dunning Method of erecting reinforced concrete structures
US2595123A (en) * 1949-01-21 1952-04-29 Patrick J Callan Method of constructing buildings
DE839922C (en) * 1949-05-09 1952-05-26 Internat Ytong Stabalite Co Lt Method and apparatus for the manufacture of reinforced cast concrete Formkoerpern
US2634603A (en) * 1947-02-28 1953-04-14 Byars Reinforcing rod spacer

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191515834A (en) * 1915-11-09 1916-11-09 Thomas James Mcdowell Improvements in Means for Holding the Reinforcement in the Moulding or Casting of Reinforced Concrete.
GB291838A (en) * 1927-03-02 1928-06-05 Albert William Coveney Improvements in or relating to moulding concrete and to means therefor
GB414290A (en) * 1934-01-01 1934-08-02 William Dzus Improvements in fastening devices
GB521826A (en) * 1938-11-29 1940-05-31 Joah Haigh Walker Improvements in or relating to the laying of reinforced concrete
US2349399A (en) * 1942-03-23 1944-05-23 Awbrey William Powell Reinforcing bar support
FR901688A (en) * 1942-12-29 1945-08-02 Device for laying iron reinforcements in plates of reinforced concrete or other concrete objects
US2634603A (en) * 1947-02-28 1953-04-14 Byars Reinforcing rod spacer
US2595123A (en) * 1949-01-21 1952-04-29 Patrick J Callan Method of constructing buildings
DE839922C (en) * 1949-05-09 1952-05-26 Internat Ytong Stabalite Co Lt Method and apparatus for the manufacture of reinforced cast concrete Formkoerpern
US2571549A (en) * 1949-06-20 1951-10-16 Luther T Dunning Method of erecting reinforced concrete structures

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044125A (en) * 1957-02-04 1962-07-17 Detrick M H Co Method of co-moulding brick
US3077362A (en) * 1959-03-30 1963-02-12 Detrick M H Co Plate holder
US3109702A (en) * 1960-09-21 1963-11-05 Detrick M H Co Method of co-moulding brick
US3271497A (en) * 1961-04-19 1966-09-06 Elgenstierna Reinhold Magnus Method for producing wall units
US3201846A (en) * 1961-05-31 1965-08-24 Owens Illinois Glass Co Apparatus for supporting a reinforcing mesh in a mold
EP0179762A1 (en) * 1984-04-30 1986-05-07 United Technologies Corp Apparatus for embedding flexible conduits in molded articles.
EP0179762A4 (en) * 1984-04-30 1986-12-01 United Technologies Corp Apparatus for embedding flexible conduits in molded articles.
US5042218A (en) * 1989-09-25 1991-08-27 Gerald Nasca Re-bar support

Similar Documents

Publication Publication Date Title
US3788025A (en) Chair support for reinforcing rods
US3130470A (en) Concrete wall form installation
US5528876A (en) Wall structure for buildings
DE2948303C2 (en)
US3328932A (en) Void former and void former in a concrete floor construction
US3030687A (en) Method and apparatus for producing a monolithic concrete construction panel
US3530634A (en) Plastic support bracket for concrete reinforcing rods
GB1284402A (en) Improvements in and relating to building constructions
CN102359279B (en) Improved method for installing reinforcement cage in beam column joint zone of reinforced concrete frame structure
DE3610030C1 (en) Building element for buildings
US3694988A (en) Spacer clip for joining and supporting crosswisely extending reinforcement bars
US5431368A (en) Tie for concrete wall forms
US2635450A (en) Building construction and slab therefor
CS231951B2 (en) Welded grille namely for securing of underground construction and methos of production
CH646751A5 (en) USE OF PROFILE ELEMENTS OF STRETCH METAL OR SHEET WITH Roughened SURFACE IN CONCRETE CONSTRUCTION OF A CONSTRUCTION.
US2529648A (en) Form for concrete construction
US3036676A (en) Lattice girder
CN207436503U (en) Efficient construction of precast floorslab hangs membrane module
US2100614A (en) Form tie
US3879914A (en) Method of making a platform structure
EP1555100A1 (en) Manufacturing method for prestressed concrete hollow slabs and slabs obtained by that method
GB2039581A (en) Reinforcing bar support for joining concrete structures
US2656115A (en) Railway sleeper of reinforced concrete with rail fastening bolts
US3320704A (en) Roof deck and method of construction
US3623289A (en) Flexible spacing device for concrete reinforcing materials