US2338026A - Adapter for form ties - Google Patents

Description

1943- ,J. c. MUSHET 2,338,026

ADAPTER FOR FORM TIES Filed Nqv. 22, 1941 I V N OR ymzsam/sm'z T ATTORN S Patented Dec. 28, 1943 UNl'lED STAT ADAPTER FOR FORM TIES James C. Mushet, Roselle Park, N. 3., assignor. by mesne assignments, to Ralph E. Ogden, New

York, N. Y.

Application November 22, 1941, Serial No. 420,049

7 Claims.

This invention relates to the provision of a Form tie wedge adapter for compensating for differences in the distance between forms for concrete which are held together by tie rods or for unlike lengths of the tie rods. It is common practice to build up spaced forms for receiving poured concrete and to hold them together by driving wedges between outer members of the forms and abutments on the tie rods. An example of such an arrangement may be found in Patent No. 2,101,141, issued to Daniel C. Hungerford, December '7, 1937. In such arrangements differences in the dimensions of the material of which the forms are made, the spacing of the walls of the forms or of the distance between the abutments on tie rods cause variations to occur in the width of the spaces into which the wedges are driven.

An object of this invention is to provide a device for compensating for such variations. Another object is to provide an adapter with a plurality of spaced abutments for tie rod heads. This not only compensates for the aforesaid variations, but enables the use of tie rods of different lengths and also enables the use of tie rods of equal lengths on forms of unequal spacing or on forms which are not parallel as when 'one or both of the form walls are battered.v

These and other objects of the invention will appear in the following specification in which a preferred embodiment of the invention will be described and its novel features set forth in appended claims.

Referring to the drawing,

Fig. 1 is a side elevation partly in section of parts of a battered wall of a mold form and the end portions of a plurality of tie rods having enlargedheads thereon, wedges of standard design and adapters which embody my invention interposed between two of the wedges and the enlarged heads of two of the tie rods;

Fig. 2 is a sectional plan View of some of the parts shown in Fig. 1, the section being taken on the line 22 of the latter figure;

Fig. 3 is a perspective view of the adapter shown in the preceding figures, the View being taken from the front thereof;

Fig. 4 is a perspective view taken from the back of the adapter; and

Fig. 5 is a front elevation of the lower part of a wedge.

I0, ll, IDA, MA, MB and HB designate walers which are outer horizontal members of a form for holding poured concrete.

I2, I2A and I213 are tie rods which pass between the walers. Each of these tie rods has an enlarged head It, lSA, 533 near its end and their ends sometimes have ptrtions is somewhat larger than the diameter of the rods and smaller than that of the heads and have flattened sides. The heads form laterally projecting stops for engaging parts of the adapter which is described herein.

2% is a wedge having a fiat portion 2i adapted to rest against the walers and beveled surfaces 22 on either side of a central slot The lower end 24 of the slot is enlarged to permit the wedge to be placed over the tie rod head These parts are conventional and well known.

to designates an adapter which embodies my invention. This is in the form of a block having a rear surface or base 3! adapted to rest upon the wedge surfaces 22. Between these surfaces is a projecting lug 32 which fits into the wedge slot 23. Approximately half of the adapter forms a front surface 33 spaced from the rear surfaces 35 which is adapted to form an abutment for a form tie head. This surface may be countersunk, as shown at to form a seat for the head. The other half of the adapter forms a front surface 35 at a greater distance from the surface 3! than is the surface 33 so that the block is thicker between the surfaces 35 and Eli than it is between the surfaces and 3!. The surface 35 may be countersunk, as at The distance of the surface 33 from. the surface 3! and the difference of the distance of the surfaces 33 and 35 from the rear surface 35 is preferably slightly less than the take-up which can be produced by the wedge. The block is slotted at 31 and 38 to provide a clearance for the tie rods I2. The surfaces 33 and 35 are inclined to the base 3i and to each other. The bottoms ofthese slots converge as shown in Fig. 3, to allow for variations in the positions of the tie rods in them.

In Fig. 1 the relative positions of the walers is that which they assume when the form'wall is battered. The tie rods are shown as havin their heads in the same vertical plane. The lower wedge 2% is interposed between a pair of walers and the head i313 of a tie rod.

Between the intermediate wedge 2i! and a tie rod head ISA an adapter 3% is interposed with the head abutting its lower surface 33, thus forming a compression member. An adapter 30 is interposed between the upper wedge 23 and a tie rod head it with the latter abutting the higher surface 35 of the adapter.

By means of the simple device herein shown and described the desired compensation for variations in the distances between the walers and the tie rod heads may be obtained readily. It is not necessary that the exact structure shown and described be used, as variations thereof may be made within the spirit and scope of the invention and I intend no limitations other than those imposed by the appended claims.

What I claim is:

l. The combination with a wedge and a tie rod extending through the wedge and having a stop projecting laterally from a fixed position near-the end thereof beyond the wedge, of adapter arranged to be interposed between the wedge and the tie rod stop, said adapter having parts of different thicknesses with interrupted abutment surfaces for selectively engaging said stop to form a compression member.

2. The combination with a wedge and a tie rod extending through the wedge and having a stop projecting laterally from a fixed position near the end thereof beyond the wedge, of an adapter arranged to be interposed between the wedge and the tie rod stop, said adapter being in the form of a block having a base and a plurality of interrupted abutment surfaces differently spaced from the base for selectively engaging said stop to form a compression member,

3. The combination with a wedge and a tie rod extending beyond the wedge and having a laterally extending stop near the end thereof beyond the wedge, of an adapter arranged to be interposed between the wedge and the tie rod stop, said adapter being in the form of a block having a base and having a plurality of abutment surfaces differently spaced from the base for selectively engaging said stop to form a compression member, said block being constructed with recesses on opposite sides thereof to form clearances for the tie rod.

4. Th combination with a wedge and a tie rod extending beyond the wedge and having a laterally extending stop near the end thereof beyond the wedge, of an adapter arranged to be interposed between "ie wedge and the tie rod stop, said adapter b g in the form of a block having a base and having a plurality of abutment surfaces diiferently spaced from the base for selectively engaging stop to form a compression member, said block being constructed with recesses on opposite sides thereof converging toward the base to form clearances for the tie rod.

5. The combination with a wedge constructed with a longitudinal slot and a tie rod extending through said slot and having a laterally extending stop near the end thereof beyond the wedge, of an adapter arranged to be interposed between the wedge and the tie rod stop, said adapter being in the form of a block having a base adapted to rest on the wedge and having a plurality of abutment surfaces differently spaced from the base for selectively engaging said stop to form a compression member and having a lug projecting from its base into the wedge slot.

6. The combination with a wedge having a bearing surface and another surface inclined thereto and a tie rod extending beyond the Wedge and having a laterally extending stop near the end thereof beyond the wedge, of an adapter arranged to be interposed between the wedge and the tie rod stop, said adapter being in the form of a bi ck having a base and two abutment surfaces diff}- ently spaced from the base for selectively eng ging said stop to form a compression member, said base being adapted to be seated on the inclined surface of the wedge with either of the abutment surfaces lowermost, said abutment surfaces being inclined to the base at such angles that one of said surfaces will be substantially parallel with the bearing surface of the wedgewhen the base the block is in one position on the wedge and the other abutment surface will be substantially parallel with the bearing surface of the wedge when the base of the block is in the reverse position on the wedge.

I. The combination of a wedge constructed with a longitudinal slot and having bearing surfaces and inclined surfaces at the sides of the slot, and a tie rod extending through said slot and having a base and two abutment surfaces differently spaced from the base for selectively engaging said stop to form a compression member,

base being adapted to be seated on the inclined surface of the wedge with either of the abutment surfaces lowermost, said abutment surfaces being inclined to the base at such angles that one of said surfaces will be substantially parallel with the bearing surface of the wedge when the base of the block is in one position on the wedge and the other abutment surface will be substantially parallel with the bearing surface of the wedge when the base of the block is in the reverse position on the wedge, and means for retaining the tie rod stop in desired positions in relation to the abutment surfaces, said block being constructed with recesses on opposite sides converging toward the base forming clearances for the tie rod and a lug projecting from the base of the look into the wedge slot.

JAMES C. MUSI-IET.

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