US3360232A - Retainer for concrete form panels - Google Patents

Retainer for concrete form panels Download PDF

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US3360232A
US3360232A US462844A US46284465A US3360232A US 3360232 A US3360232 A US 3360232A US 462844 A US462844 A US 462844A US 46284465 A US46284465 A US 46284465A US 3360232 A US3360232 A US 3360232A
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panels
retainer
plate
concrete
spaced
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US462844A
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Edward F Vandenheuvel
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/07—Tying means, the tensional elements of which are fastened or tensioned by means of wedge-shaped members
    • E04G17/0707—One-piece elements
    • E04G17/0721—One-piece elements remaining completely or partially embedded in the cast material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/129—Wedge

Definitions

  • the enlarged opening is dimensioned to receive the headed end of a concrete form tie rod and the slot is dimensioned to receive the tie rod.
  • a pair of the plates are positioned one against each of a pair of spaced form panels for supporting a tie rod at its opposite headed ends.
  • This invention relates to a retainer for concrete form panels.
  • the walers are removed and the panels stripped from the hardened concrete. If it is desired to reuse the panels, they must be subjected to a time consuming and costly cleanup operation which involves removing the nails from them and thereafter scraping them to remove the hardened concrete.
  • Still a further object of the invention is the provision of a retainer for concrete form panels which may be used rapidly and accurately by a crew of minimum size; which holds the forms securely during use; which is adaptable for use in the construction of forms of various contour; which may be stripped easily and rapidly from the forms after the concrete has hardened; and which is light in weight and nests for convenient storage.
  • FIG. 1 is a plan view of the herein described retainer for concrete form panels
  • FIG. 2 is a view in end elevation of the retainer of FIG. 1;
  • FIG. 3 is a fragmentary sectional view
  • FIG. 4 a fragmentary view in elevation, of a concrete form constructed using the presently described retainers.
  • the concrete form panel retainer of my invention is adapted for use broadly in the demountable assembly of a concrete form comprising a plurality of panels held in parallel, spaced, edge-abutting, concrete form-creating relation. Tie rods penetrate the panels at spaced intervals and project outwardly therefrom on each side.
  • the presently described retainers comprise plates which are dimensioned to overlie a pair of the apertures, as well as the margins of the adjacent edge-abutting panels.
  • the plates are mounted on the tie rods and wedged against the outer surfaces of the panels, as by an integral, conical ICC wedge incorporated in each retainer, thereby holding the panels in proper relation to each other.
  • the plates are removed from the form ties and from the panels. Thereafter the panels may be stripped from the concrete and, being free from the nails usually used in nailing them to the studs, are ready for reuse after a simple scraping operation.
  • the concrete form panel retainers of my invention are useful in the erection of vertical forms such as are illustrated in FIGS. 3 and 4.
  • the forms are supported on footings or slabs 10 and comprise a plurality of plywood or fiberboard panels 12 edge abutted and arranged in parallel, spaced arrangement as required to pour a concrete wall of the desired thickness.
  • the bases of the lowermost panels are located by means of a lumber piece 14 nailed to the concrete slab.
  • the panels are provided with a plurality of spaced apertures. These are of two categories. Those located in the central parts of the panel may comprise drilled openings 16 which are entire as shown in FIG. 4. Those located along the edges of the panels comprise half openings or semi-circular notches 18, as shown in the same figure. When the panels are placed in edge-abutting relationship the notches register and form complete openings.
  • the apertures thus formed are used to receive tie rods which serve the dual functions of spacing the panels from each other and of mounting the herein described retainers. Any of various commercial tie rods may be used for this purpose. An example is indicated generally at 20 in FIG. 3.
  • stem 22 of sufiicient length to extend completely through the panels and a spaced distance outwardly from the outer face of each panel.
  • a flat head 24 is present on each end of the stem.
  • A-n abutment 26 is fixed to the stem a spaced distance inwardly from each head.
  • the stem is formed with thinned fracture segments 28, a short distance inwardly from abutments 26. These pe rmit snapping off the tie rods just beneath the surface of the concrete, after the concrete has hardened.
  • the presently described retainers are mounted on tie rods 20 and illustrated in detail in FIGS. 1 and 2.
  • Each retainer comprises a flat plate indicated generally at 30. It may be fabricated from sheet metal of any suitable size and shape, being rectangular, square, round or oval.
  • Each plate is provided with a base 32, the margins of which are penetrated by a plurality of nail holes 34. These are adapted to receive nails 36.
  • the edges preferably are rolled outwardly to form a stiffening rib 38.
  • the plate mounts an integral wedge indicated at 40 and comprising a centrally located, symmetrical or unsymmetrical, conical projection.
  • the extent and pitch of this projection are variable, depending upon the particular application. In general, however, the pitch should be sufliciently gentle to permit effective application of wedging pressure, as will appear hereinafter.
  • Cone shaped projection 40 is provided with a radial slot 42.
  • the upper end of the slot terminates at the apex of the cone.
  • the lower end terminates in an opening 44 of enlarged diameter.
  • slot 42 is sufficient to receive stem 22 of tie rod 20, but insufiicient to pass tie rod head 24.
  • the diameter of opening 44 is greater than the diameter of head 24 so that the latter will pass through the opening.
  • locating strips 14 are fastened to the concrete slab or footing.
  • two pairs of opposed panels 12 are placed opposite each other against the locating strips with the apertures in the opposite panels aligned with each other.
  • Tie rods 20 are inserted through the aligned openings and the panels plumbed and braced, with their inner faces abutting against abutments 26 of the tie rods.
  • Retainers 30 are slipped over the outwardly-extending ends of the tie rods by inserting the heads of the tie rods through enlarged openings 44. Each retainer is slipped along the outer surface of the panel until it has assumed the FIG. 3 position with respect to tie rod 26, i.e. a position in which the tie rod extends through the retainer at the apex of the conical projection thereon.
  • retainers then are secured in place by nailing them with nails 36 applied through nail holes 34 in the retainer margins. Since retainers may overlap as many as four edge-abutting panels (FIG. 4), nailing the retainers to the underlying panels secures the panels in their edgeabutting relationship.
  • Additional panels are edge-abutted against those to which the retainers have been applied, as necessary to erect a form of the desired dimensions. If desired, this may be done concurrently with the pouring of the concrete, the form being built upwardly to accommodate the successive lifts of concrete.
  • the retainers are removed by striking heads 24 of form ties 20, bending the outwardly projecting stems of the ties along the length of slots 42 until the heads of the ties are opposite openings 44.
  • a suitable pry tool then may be slipped beneath the edge of each retainer and used to pry the retainer free from the forms. It is a particular feature of the invention that as the retainers are pried from the forms, nails 36 are removed with the retainers, thereby eliminating the necessity of denailing the panels at a later date.
  • the panels may be stripped from the hardened concrete. They then are scraped to remove residual hardened concrete whereupon they are ready immediately for reuse.
  • the tie rods which have been left extending from the concrete wall are snapped oil? in the usual manner.
  • the openings which are left then are patched to complete the concrete pouring operation.
  • a panel retainer for use in demountably assembling a plurality of panels in parallel, spaced, edge-abutting, concrete form-creating relation, the panels being apertured at spaced intervals, at least some of the apertures being adjacent the margins of edge-abutting panels, the apertures in opposite panels being disposed in aligned pairs, each aperture pair being adapted to receive a tierod, the tierod comprising a stem having a head on each end and a radial abutment spaced from each head, the tierod being dimensioned to extend outwardly a spaced distance on each side beyond the planes of the panels with the abutments bearing against the inner face surfaces thereof, the panel retainer comprising:
  • the wedge means comprises a conical projection extending outwardly from the plate and having at its apex an aperture dimensioned to receive the tierod.
  • wedge means comprises a conical projection extending outwardly from the plate and having a radial slot one end of which terminates at the apex and has a cross section smaller than the diameter of the tierod head, and the other end of which terminates in an opening having a cross section greater than the diameter of the tierod head.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Description

Dec. 26, 1967 E. F. VANDENHEUVEL 3,360,232
RETAINER FOR CONCRETE FORM PANELS Filed June 10, 1965 E Vcmdenheuve] INVENTOR ward United States Patent 3,360,232 RETAINER FOR CONCRETE FORM PANELS Edward F. Vandenheuvel, 2412 Grandview W., Tacoma, Wash. 98466 Filed June 10, 1965, Ser. No. 462,844 Claims. (Cl. 249-191) ABSTRACT OF THE DISCLOSURE A plate having a central conical portion is provided with a slot radiating from the apex of the cone and terminating at the end opposite the apex in an enlarged ozpening. The enlarged opening is dimensioned to receive the headed end of a concrete form tie rod and the slot is dimensioned to receive the tie rod. A pair of the plates are positioned one against each of a pair of spaced form panels for supporting a tie rod at its opposite headed ends.
This invention relates to a retainer for concrete form panels.
In pouring concrete walls, it is conventional practice to construct a form comprising two opposed panels held in spaced, parallel relationship by means of tie rods. The tie rods in turn are secured by an assembly of studs and walers nailed to the outside of the panels.
After the concrete has been poured and hardened, the walers are removed and the panels stripped from the hardened concrete. If it is desired to reuse the panels, they must be subjected to a time consuming and costly cleanup operation which involves removing the nails from them and thereafter scraping them to remove the hardened concrete.
It is the general object of the present invention to provide a retainer for concrete form panels, the use of which eliminates the necessity of using studs and Walers in the erection of concrete forms.
It is another object of the invention to provide a retainer, the use of which reduces the form panel cleanup operation to the single step of scraping the hardened concrete from the faces of the panels.
Still a further object of the invention is the provision of a retainer for concrete form panels which may be used rapidly and accurately by a crew of minimum size; which holds the forms securely during use; which is adaptable for use in the construction of forms of various contour; which may be stripped easily and rapidly from the forms after the concrete has hardened; and which is light in weight and nests for convenient storage.
The manner in which the foregoing and other objects of this invention are accomplished will be apparent from the accompanying specification and claims, considered together with the drawings, wherein:
FIG. 1 is a plan view of the herein described retainer for concrete form panels;
FIG. 2 is a view in end elevation of the retainer of FIG. 1; and
FIG. 3 is a fragmentary sectional view, and FIG. 4 a fragmentary view in elevation, of a concrete form constructed using the presently described retainers.
The concrete form panel retainer of my invention is adapted for use broadly in the demountable assembly of a concrete form comprising a plurality of panels held in parallel, spaced, edge-abutting, concrete form-creating relation. Tie rods penetrate the panels at spaced intervals and project outwardly therefrom on each side.
The presently described retainers comprise plates which are dimensioned to overlie a pair of the apertures, as well as the margins of the adjacent edge-abutting panels. The plates are mounted on the tie rods and wedged against the outer surfaces of the panels, as by an integral, conical ICC wedge incorporated in each retainer, thereby holding the panels in proper relation to each other.
After the concrete has been poured and hardened, the plates are removed from the form ties and from the panels. Thereafter the panels may be stripped from the concrete and, being free from the nails usually used in nailing them to the studs, are ready for reuse after a simple scraping operation.
Considering the foregoing in greater detail and with particular reference to the drawings:
The concrete form panel retainers of my invention are useful in the erection of vertical forms such as are illustrated in FIGS. 3 and 4. The forms are supported on footings or slabs 10 and comprise a plurality of plywood or fiberboard panels 12 edge abutted and arranged in parallel, spaced arrangement as required to pour a concrete wall of the desired thickness. The bases of the lowermost panels are located by means of a lumber piece 14 nailed to the concrete slab.
The panels are provided with a plurality of spaced apertures. These are of two categories. Those located in the central parts of the panel may comprise drilled openings 16 which are entire as shown in FIG. 4. Those located along the edges of the panels comprise half openings or semi-circular notches 18, as shown in the same figure. When the panels are placed in edge-abutting relationship the notches register and form complete openings.
The apertures thus formed are used to receive tie rods which serve the dual functions of spacing the panels from each other and of mounting the herein described retainers. Any of various commercial tie rods may be used for this purpose. An example is indicated generally at 20 in FIG. 3.
It comprises a stem 22 of sufiicient length to extend completely through the panels and a spaced distance outwardly from the outer face of each panel. A flat head 24 is present on each end of the stem. A-n abutment 26 is fixed to the stem a spaced distance inwardly from each head.
The stem is formed with thinned fracture segments 28, a short distance inwardly from abutments 26. These pe rmit snapping off the tie rods just beneath the surface of the concrete, after the concrete has hardened.
The presently described retainers are mounted on tie rods 20 and illustrated in detail in FIGS. 1 and 2.
Each retainer comprises a flat plate indicated generally at 30. It may be fabricated from sheet metal of any suitable size and shape, being rectangular, square, round or oval.
Each plate is provided with a base 32, the margins of which are penetrated by a plurality of nail holes 34. These are adapted to receive nails 36.
To stiffen the plate, the edges preferably are rolled outwardly to form a stiffening rib 38.
The plate mounts an integral wedge indicated at 40 and comprising a centrally located, symmetrical or unsymmetrical, conical projection. The extent and pitch of this projection are variable, depending upon the particular application. In general, however, the pitch should be sufliciently gentle to permit effective application of wedging pressure, as will appear hereinafter.
Cone shaped projection 40 is provided with a radial slot 42. The upper end of the slot terminates at the apex of the cone. The lower end terminates in an opening 44 of enlarged diameter.
The width of slot 42 is sufficient to receive stem 22 of tie rod 20, but insufiicient to pass tie rod head 24. The diameter of opening 44 is greater than the diameter of head 24 so that the latter will pass through the opening.
The procedure employed in erecting concrete forms using the herein described retainer is as follows:
First, locating strips 14 are fastened to the concrete slab or footing. Next, two pairs of opposed panels 12 are placed opposite each other against the locating strips with the apertures in the opposite panels aligned with each other. Tie rods 20 are inserted through the aligned openings and the panels plumbed and braced, with their inner faces abutting against abutments 26 of the tie rods.
Retainers 30 are slipped over the outwardly-extending ends of the tie rods by inserting the heads of the tie rods through enlarged openings 44. Each retainer is slipped along the outer surface of the panel until it has assumed the FIG. 3 position with respect to tie rod 26, i.e. a position in which the tie rod extends through the retainer at the apex of the conical projection thereon.
During this motion, a wedging action occurs, the retainer being pressed firmly against the panel which, in turn, is pressed firmly against abutment 26.
The retainers then are secured in place by nailing them with nails 36 applied through nail holes 34 in the retainer margins. Since retainers may overlap as many as four edge-abutting panels (FIG. 4), nailing the retainers to the underlying panels secures the panels in their edgeabutting relationship.
Additional panels are edge-abutted against those to which the retainers have been applied, as necessary to erect a form of the desired dimensions. If desired, this may be done concurrently with the pouring of the concrete, the form being built upwardly to accommodate the successive lifts of concrete.
After the concrete has set, the retainers are removed by striking heads 24 of form ties 20, bending the outwardly projecting stems of the ties along the length of slots 42 until the heads of the ties are opposite openings 44. A suitable pry tool then may be slipped beneath the edge of each retainer and used to pry the retainer free from the forms. It is a particular feature of the invention that as the retainers are pried from the forms, nails 36 are removed with the retainers, thereby eliminating the necessity of denailing the panels at a later date.
After all of the retainers have been removed, the panels may be stripped from the hardened concrete. They then are scraped to remove residual hardened concrete whereupon they are ready immediately for reuse.
The tie rods which have been left extending from the concrete wall are snapped oil? in the usual manner. The openings which are left then are patched to complete the concrete pouring operation.
It accordingly will be seen that there is provided an apparatus in which the several objects of this invention are achieved and which is well adapted for the conditions of practical use.
It is to be understood that the form of my invention herein shown and described is to be taken as a preferred example of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.
Having thus described my invention, I claim:
1. A panel retainer for use in demountably assembling a plurality of panels in parallel, spaced, edge-abutting, concrete form-creating relation, the panels being apertured at spaced intervals, at least some of the apertures being adjacent the margins of edge-abutting panels, the apertures in opposite panels being disposed in aligned pairs, each aperture pair being adapted to receive a tierod, the tierod comprising a stem having a head on each end and a radial abutment spaced from each head, the tierod being dimensioned to extend outwardly a spaced distance on each side beyond the planes of the panels with the abutments bearing against the inner face surfaces thereof, the panel retainer comprising:
(a) a plate dimensioned to overlie one of the aperture pairs and the margins of the adjacent abutting panels, the plate bearing against the outer surfaces thereof,
(b) wedge means projecting angularly outward from the plane of the plate,
(c) the wedge means having on its outward portion an aperture for releasably receiving the tie rod; and
(d) securing means for securing the plate to the edge abutting panels which it overlies.
2. The panel retainer of claim 1 wherein the wedge means comprises a conical projection extending outwardly from the plate and having at its apex an aperture dimensioned to receive the tierod.
3. The panel retainer of claim 1 wherein the wedge means comprises a conical projection extending outwardly from the plate and having a radial slot one end of which terminates at the apex and has a cross section smaller than the diameter of the tierod head, and the other end of which terminates in an opening having a cross section greater than the diameter of the tierod head.
41 The panel retainer of claim 1 wherein the securing means comprises a plurality of nails penetrating the margins of the plate.
5. The panel retainer of claim 1 wherein the rim of the plate is bent outwardly to form a stiffening peripheral rib.
References Cited UNITED STATES PATENTS 2,074,460 3/1933 Coet 249-213 2,162,349 6/1939 Hillberg 249-213 2,310,669 2/1943 Bosco 249-44 2,778,087 1/1957 Krueper 249213 2,962,789 12/1960 Williams 24919O 3,174,203 3/1965 Kemper 249-213 3,186,679 6/1965 Williams 249191 WILLIAM J. STEPHENSON, Primary Examiner.

Claims (1)

1. A PANEL RETAINER FOR USE IN DEMOUNTABLY ASSEMBLING A PLURALITY OF PANELS IN PARALLEL, SPACED, EDGE-ABUTTING, CONCRETE FORM-CREATING RELATION, THE PANELS BEING APERTURED AT SPACED INTERVALS, AT LEAST SOME OF THE APERTURES BEING ADJACENT THE MARGINS OF EDGE-ABUTTING PANELS, THE APERTURES IN OPPOSITE PANELS BEING DISPOSED IN ALIGNED PAIRS, EACH APERTURE PAIR BEING ADAPTED TO RECEIVE A TIEROD, THE TIEROD COMPRISING A STEM HAVING A HEAD ON EACH END AND A RADIAL ABUTMENT SPACED FROM EACH HEAD, THE TIEROD BEING DIMENSIONED TO EXTEND OUTWARDLY A SPACED DISTANCE ON EACH SIDE BEYOND THE PLANES OF THE PANELS WITH THE ABUTMENTS BEARING AGAINST THE INNER FACE SURFACES THEREOF, THE PANEL RETAINER COMPRISING: (A) A PLATE DIMENSIONED TO OVERLIE ONE OF THE APERTURE PAIRS AND THE MARGINS OF THE ADJACENT ABUTTING PANELS, THE PLATE BEARING AGAINST THE OUTER SURFACES THEREOF, (B) WEDGE MEANS PROJECTING ANGULARLY OUTWARD FROM THE PLANE OF THE PLATE, (C) THE WEDGE MEANS HAVING ON ITS OUTWARD PORTION AN APERTURE FOR RELEASABLY RECEIVING THE TIE ROD; AND (D) SECURING MEANS FOR SECURING THE PLATE TO THE EDGE ABUTTING PANELS WHICH IT OVERLIES.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517906A (en) * 1966-07-12 1970-06-30 Outinord Sa Ets Casting frames or molds
US4085495A (en) * 1976-10-04 1978-04-25 Hebert Napoleon R Method of erecting forms for a concrete form
US5695676A (en) * 1995-01-18 1997-12-09 Lee; Wen-Yuan Modular form assembly for concrete structures
US20100059655A1 (en) * 2007-01-27 2010-03-11 Artur Schwoerer Anchor system of a concrete wall form

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2074460A (en) * 1935-12-26 1937-03-23 Samuel S Colt Form retaining means
US2162349A (en) * 1937-03-06 1939-06-13 Reconstruction Finance Corp Band clamp
US2310669A (en) * 1939-05-27 1943-02-09 George B Bosco Concrete form
US2778087A (en) * 1953-09-08 1957-01-22 Jr Harry J Krueper Tie for concrete forms
US2962789A (en) * 1954-08-05 1960-12-06 Chester I Williams Flexible socket
US3174203A (en) * 1963-05-13 1965-03-23 Christian Truth Foundation Inc Bracket and clamp assembly
US3186679A (en) * 1961-04-13 1965-06-01 Chester I Williams Concrete form assembly and clamping means therefor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2074460A (en) * 1935-12-26 1937-03-23 Samuel S Colt Form retaining means
US2162349A (en) * 1937-03-06 1939-06-13 Reconstruction Finance Corp Band clamp
US2310669A (en) * 1939-05-27 1943-02-09 George B Bosco Concrete form
US2778087A (en) * 1953-09-08 1957-01-22 Jr Harry J Krueper Tie for concrete forms
US2962789A (en) * 1954-08-05 1960-12-06 Chester I Williams Flexible socket
US3186679A (en) * 1961-04-13 1965-06-01 Chester I Williams Concrete form assembly and clamping means therefor
US3174203A (en) * 1963-05-13 1965-03-23 Christian Truth Foundation Inc Bracket and clamp assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517906A (en) * 1966-07-12 1970-06-30 Outinord Sa Ets Casting frames or molds
US4085495A (en) * 1976-10-04 1978-04-25 Hebert Napoleon R Method of erecting forms for a concrete form
US5695676A (en) * 1995-01-18 1997-12-09 Lee; Wen-Yuan Modular form assembly for concrete structures
AU692722B2 (en) * 1995-11-02 1998-06-11 Wen-Yuan Lee Modular for assembly for concrete structure
US20100059655A1 (en) * 2007-01-27 2010-03-11 Artur Schwoerer Anchor system of a concrete wall form
US8220772B2 (en) * 2007-01-27 2012-07-17 Peri Gmbh Anchor rod anchor system of a concrete wall form

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