US1919751A - Wedge for form ties - Google Patents
Wedge for form ties Download PDFInfo
- Publication number
- US1919751A US1919751A US605321A US60532132A US1919751A US 1919751 A US1919751 A US 1919751A US 605321 A US605321 A US 605321A US 60532132 A US60532132 A US 60532132A US 1919751 A US1919751 A US 1919751A
- Authority
- US
- United States
- Prior art keywords
- wedge
- tie
- ties
- form ties
- loop
- 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
- 239000002184 metal Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 108010085990 projectin Proteins 0.000 description 1
- 239000004308 thiabendazole Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the object of my invention is to provide a holding wedge for a simple form tie which will be cheap to construct, easy to manipulate, and satisfactory in service, and which may be broken off well in theconcrete after use, so as to leave no exposed metal, after the pointing of the wall.
- Figure 2 is a similar view taken at right angles to Figure 1;
- Figures 3 and 4 show a fastening wedge, Figure 4 being a sectional view taken on the line 4-4 of Figure 3.
- My improved form tie 1 may be used with any suitable form 2, which may consist of longitudinal boards 3 re-inforced by horizontal beams 4 and vertical beams 5, all of which are used in the conventional manner.
- This tie 1 has cross bars 6 welded to the same in such a manner as to make the metal somewhat brittle where the weld occurs, so that when the bar is bent, it will fracture at this point. As long as it is straight and in tension, this brittleness is not important as it does not impair its tensile strength.
- the tie is provided with an enlarged head or washer 7, which is secured in place by swaging or in other suitable manner.
- the parts are drawn together by means of wedges 8 at each end. These wedges are carefully designed so as to be bottom heavy and not top heavy.
- Each wedge is composed of a casting orforging with parallel surfaces 9 adapted to engage the parts 7 with increasing thickness from the inner surfaces 10 as the top is approached, the top position being that which the wedge assumes when in use.
- a longitudinal slot 11 extends nearly the length of the wedge and at the bottom there is an elevated loop 12 which is so arranged and disposed that it carries more weight than'the top and will clear the part 7 of a form tie when inserted as indicated in Figure 4.
- This part 12 is in the form of a loop as indicated, and when the wedge is put in place and moved down so that the tie extends through the slot 11 at a point above the center of gravity of the wedge, gravity will maintain the tie in a vertical position with the loop 12 down.
- said walls ha outer parallel surfaces diverging from t e inner surfaces of said walls to the top of the wedge, a loop at the bottom of the walls connecting said walls and enlar 'n the lower end of the slot so that the en of a 'form tie may be passed through the loo and the Weight of the loop will tend to hol the wedge in a vertically disposed osition, the loop extending out diagonally un the walls of the wedge.
Landscapes
- 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
T. C. SCHENK WEDGE FOR FORM TIES Original Filed May 1, 1951 INVENTOR Patented July 25, E233 retain tmrrso STATES PATENT OFFICE TAMIS C. SCHENK, OF BROOKLYN, NEW YORK, ASSIGNOR TO RICHMOND SCREW ANCHOR (70., INC., A CORPORATION OF NEW YORK WEDGE FOR FORM TIES Original application filed May 1, 1931, Serial No. 534,153, now Patent No. 1,857,61 0, dated May 10, 1932. Divided and this application filed April 9, 1932. Serial No. 605,321.
This application is a division of my earlier application for Form ties, filed May 1st. 1931, and bearing Serial No. 534,153
patented May 10, 1932, Number 1,857.610.
The object of my invention is to provide a holding wedge for a simple form tie which will be cheap to construct, easy to manipulate, and satisfactory in service, and which may be broken off well in theconcrete after use, so as to leave no exposed metal, after the pointing of the wall. These and other objects are accomplished by my invention, some embodiments of which are hereinafter more particularly set forth.
For a more detailed description of my invention, reference is tobe had to the accompanying drawing, forming a part hereof, in which Figure 1 is a sectional view showing one embodiment of my invention;
Figure 2 is a similar view taken at right angles to Figure 1;
Figures 3 and 4 show a fastening wedge, Figure 4 being a sectional view taken on the line 4-4 of Figure 3.
Throughout the various views of the drawing. similar reference characters designate similar parts.
My improved form tie 1 may be used with any suitable form 2, which may consist of longitudinal boards 3 re-inforced by horizontal beams 4 and vertical beams 5, all of which are used in the conventional manner.
This tie 1 has cross bars 6 welded to the same in such a manner as to make the metal somewhat brittle where the weld occurs, so that when the bar is bent, it will fracture at this point. As long as it is straight and in tension, this brittleness is not important as it does not impair its tensile strength. At each end, the tie is provided with an enlarged head or washer 7, which is secured in place by swaging or in other suitable manner. The parts are drawn together by means of wedges 8 at each end. These wedges are carefully designed so as to be bottom heavy and not top heavy. Each wedge is composed of a casting orforging with parallel surfaces 9 adapted to engage the parts 7 with increasing thickness from the inner surfaces 10 as the top is approached, the top position being that which the wedge assumes when in use. A longitudinal slot 11 extends nearly the length of the wedge and at the bottom there is an elevated loop 12 which is so arranged and disposed that it carries more weight than'the top and will clear the part 7 of a form tie when inserted as indicated in Figure 4. This part 12 is in the form of a loop as indicated, and when the wedge is put in place and moved down so that the tie extends through the slot 11 at a point above the center of gravity of the wedge, gravity will maintain the tie in a vertical position with the loop 12 down. This is most important because during the pouring and other operations incidental to the use of the forms there is some vibration and if this wedge were top heavy instead of bottom heavy, it would have a tendency to loosen, reverse, and drop. This is impossible With the structure made i as above described.
The use of this modification will be readily understood. Assuming that theforms are assembled and against the bar 6, the wedges are inserted as indicated in Figure 4, anddriven down or allowed to slide down to their proper position, where they will automatically lock and remain 'firm until the forms are taken down, and the forms are taken down by striking upwardly the loops- 12 of the wedges 8 and then removing the wedges and taking down the forms, and this will leave the ends of the ties 1 projectin As soon as the concrete is sufliciently hard, these ties may be readily broken by bending close to the bars 6, because of the effect of the Welding which makes the bars brittle at these points and the ends may be thrown away and the surface finished so as to completely conceal the metal.
YVhile I have shown and-described some embodiments of my invention, it is obvious that it is not restricted thereto, but that it is broad enough to cover all structures that come Within the scope of the annexed claims.
Having thus described my invention, what I claim is:
1. A bottom-heavy wedge for form ties,
between them, said walls ha outer parallel surfaces diverging from t e inner surfaces of said walls to the top of the wedge, a loop at the bottom of the walls connecting said walls and enlar 'n the lower end of the slot so that the en of a 'form tie may be passed through the loo and the Weight of the loop will tend to hol the wedge in a vertically disposed osition, the loop extending out diagonally un the walls of the wedge.
TAMIS C. SCHENK.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US605321A US1919751A (en) | 1931-05-01 | 1932-04-09 | Wedge for form ties |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US534153A US1857610A (en) | 1931-05-01 | 1931-05-01 | Form tie |
US605321A US1919751A (en) | 1931-05-01 | 1932-04-09 | Wedge for form ties |
Publications (1)
Publication Number | Publication Date |
---|---|
US1919751A true US1919751A (en) | 1933-07-25 |
Family
ID=27064372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US605321A Expired - Lifetime US1919751A (en) | 1931-05-01 | 1932-04-09 | Wedge for form ties |
Country Status (1)
Country | Link |
---|---|
US (1) | US1919751A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3199828A (en) * | 1964-01-08 | 1965-08-10 | Willie E Newton | Supporting and clamping device |
US3745620A (en) * | 1970-09-10 | 1973-07-17 | Metallgesellschaft Ag | Method of making corona-discharge electrode structures and assembly therefore |
US3868748A (en) * | 1973-06-27 | 1975-03-04 | William F Kelly | Tendon gripping and release assembly |
US3995825A (en) * | 1975-08-01 | 1976-12-07 | Ward Edward B | Form tie for concrete form structures |
US20160258170A1 (en) * | 2015-03-04 | 2016-09-08 | P & W Construction Materials and Consulting Ltd. | Strongback waler bracket and methods of using the same |
-
1932
- 1932-04-09 US US605321A patent/US1919751A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3199828A (en) * | 1964-01-08 | 1965-08-10 | Willie E Newton | Supporting and clamping device |
US3745620A (en) * | 1970-09-10 | 1973-07-17 | Metallgesellschaft Ag | Method of making corona-discharge electrode structures and assembly therefore |
US3868748A (en) * | 1973-06-27 | 1975-03-04 | William F Kelly | Tendon gripping and release assembly |
US3995825A (en) * | 1975-08-01 | 1976-12-07 | Ward Edward B | Form tie for concrete form structures |
US20160258170A1 (en) * | 2015-03-04 | 2016-09-08 | P & W Construction Materials and Consulting Ltd. | Strongback waler bracket and methods of using the same |
US9784002B2 (en) * | 2015-03-04 | 2017-10-10 | P & W Construction Materials and Consulting Ltd. | Strongback waler bracket and methods of using the same |
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