US2838822A

US2838822A - Wall form tie assembly

Info

Publication number: US2838822A
Application number: US587332A
Authority: US
Inventors: William H Kenney; Ferdinand F Newburg
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-05-25
Filing date: 1956-05-25
Publication date: 1958-06-17
Anticipated expiration: 1975-06-17

Description

June 17, 1958 w. H. KENNEY ET AL 2,838,822

WALL FORM TIE ASSEMBLY 2 Sheets-Sheet 1 Filed May 25, 1956 INVENTORS William H. Kenney Ferdinand F. Newburg W/ FIG.3.

ATTORNEY w. H. KENNEY ET AL 2,838,822

WALL FORM TIE ASSEMBLY June 17, 1958 2 Sheets-Sheet 2 Filed May 25, 1956 aw W Wm M rem M m n W A /mm /x WM m a 9 W F.

United States Patent WALL FORM TIE ASSEMBLY William H. Kenney, West Englewood, N. J and Ferdinand F. Newburg, Baltimore, Md..

Application May 25, 1956, Serial No. 587,332

2 Claims. (Cl. 25-131) This invention relates to ties such as are used in connection with the pouring of concrete between forms and specifically to ties which are reusable during a Series of pouring operations.

Where concrete is to be poured between form members it is presently the custom to apply tie. means insertable between the forms, which ties not only serve to reinforce the poured concrete but also to space and hold the form members during the pouring operation. Presently known ties consist of unitary steel rods having. fastening. means at each end thereof for the purpose of securing them to the form structure. Such ties extend through the form structures and are secured thereto by means of keys, wedges or the like. After the wall. has beenpoured the forms are stripped from the concrete and the ties thereafter broken back so as to leave the remainder of the tie embedded in the wall. The hole left by the break-back is then filled with concrete to hide the break-back opening. In the use of presently known tie structures a substantial amount of metal isbroken off each end of the tie and thereafter thrown away or sold as scrap.

Accordingly it is an object of the present invention to provide a wall form tie assembly which will eliminate much of the waste of metal found. in presently known structures.

Another object of the present invention is to provide an easily applied tie assembly.

A further object of the present invention is to, provide a wall form tie assembly which will enable. the user thereof to produce a finished wall of high quality.

An. object of the present invention is to provide a tie end structure which may be used over and over again with considerable economy to the builder.

A. feature of the present invention is its novel unitary tie end construction.

Another feature of the present invention is its use of a simplified tie rod.

A further feature of the present invention. is its tie and tie end interlocking structure.

The invention consists of the construction, combination and arrangement of parts, as herein illustrated, described and claimed.

In the accompanying, drawings, forming a part hereof are illustrated three forms of embodiment of they invention, inwhich drawings similar reference. characters. designate corresponding parts and in which:

Figure 1 is a view in side elevation ofa complete embodiment of one form of wall tie in accordance with the.

present invention, showing. a fragment of. the poured wall. I t

Figure 2 is a vertical section, somewhat enlarged, of the break-back cone portion of the tie shown in Figure 1.

Figure 3 is a fragmentary view similar to Figure 2 showing the tie after it has been broken.

Figure 4 is' a sectional view taken on line 44 in Figure 2, looking in the direction of the arrows.

Figure 5 is a sectional view taken on line 5-5 in Figure 2, looking in the direction of the arrows.

Figure 6 is a view in side elevation of the cone H1311]: ber showing a locking washer assembly.

Figure 7 is a top plan'view of a second embodiment of the present invention. showing a fragment. of the poured wall.

Figure 8 is a fragmentary view of a vertical section of the tie shown in Figure 7 somewhat enlarged showing the manner in which the tie is assembled.

Figure 9 is a view taken on line 9--9 in Figure 8, looking in the direction of the arrows.

Figure 10 is a view in front elevation ofv the tie end member shown in Figure 8..

Figure 11 is a view taken on line 11-11 in Figure 8, looking in the direction of the arrows.

Figure 12 is a vertical section of a third embodiment of the present invention.

Figure 13 is a sectional view of th embodiment shown in Figure 12, taken on line 13-13.

Referring to the drawings and specifically to Figure 1, 15 indicates a rod shaped, tie having weakening notches 16 and-a flattened portion 17 spaced from each endthereof. The tie 15 may also be provided with a central flat portion 18 to prevent twisting thereof'after the concrete has been poured around the said tie. A tie end structure generally indicated at 19. is secured to. the end of the rod 15. The tie endstructure 19 comprises a cone member 20 and an anchoring bar 21. The anchoring bar 21 is provided with a slot 22 spaced from the end thereof and a hole 23. between the slot 22 and the end 24 of the anchoring bar 21. The cone shaped member 20 is of larger diameterthan that of the anchoring barv 21 and providesa shoulder 24 whichbears against the panel face 25 of the Wall form. The anchoring bar 21 is thrust through a suitable opening 26 in the wall form panel face 25.

Referring to Figures 2, 3, 4 and 5, it will be seen that the cone member 20 has a somewhat. key-hole shaped opening 27 in the front thereof. The keyhole opening 27 communicates with an interior tie retaining chamber 28 formed within the cone. member 20. The chamber 28 is of larger diameter than the keyhole 27 andv provides a shoulder 29 which prevents the tie rod 15 fromslipping out of the cone member 20. The flattened portion 17 of the tie rod 15 slips within the vertical slot 30 of the key-hole opening 27. The outer end of the rod 15, due to the flattened portion 17, becomes abutton 31. The button 31 has a bearing. surface 33 which seats againstthe shoulder. 29 of the chamber 28.

In order to secure the tie end 19 to the tie rod 15-, the end of the tie rod is thrust through the key-hole opening 27, and then forced downwardly until it reaches the position shown in Figures 1 and 2. In moving downwardly the button portion: 31 of the tie rod 15 within the inner retaining chamber 28 will encounter a: nub 43 formed inv the wall of. said chamber. The nub 43-forces the button member 31 of the tie rod laterally until the said rod has cleared it and assumed the position shown in Figure 5.

The nub 43. will then act asa lock to keep the tie from moving. upwardly within the key-hole slot 27 and becoming detached.

It is within. the purview of. thepresent invention to provide a wedge: member 32 shown in Figure 2 for insertion within the circular portion of the key-hole slot 27. The wedge will further prevent the rod 15 from the tie end member 19 the tie rod 15 generally serves as a reinforcing member but also a spacer or spreader for the form pouring face 25. After all of the tie ends have been inserted within the form, in accordance with the well known practice, they may be locked in place bythrusting keys, wedges, or other fastening means (not shown) through the slot 22 in the tie end members 19. The extending anchoring bars 21 will support whale members (not shown) which may be secured to the form by means of Whaler hooks (not shown), which engage the hole 23 in the tie end member 21 in the well known manner.

After the forms are set up the concrete 34 is poured therebetween. When the concrete 34 sets, the forms may be stripped from the'wall leaving the tie end anchoring bars 21 projecting from the wall. A suitable tool may be used to grasp the tie end bar 21 and twist it. Spanner holes 35 are provided in the rear wall 36 of the cone members 20 for the purpose of receiving the tie end twisting tool. When the tie end 19 is twisted the tie rod15 will break at the weakening notches 16. The inner flattened portion 18 will prevent the tie rod 15 from twisting within the concrete 34. When the tie rod 15 breaks the tie end 19 may be pulled out of the wall leaving a conical opening therein. The conical opening may. thereafter be filled with cement to provide a smooth wall and prevent rust from the tie 15 from discoloring said wall.

The small portion 19 of the tie 15 which remains within the cone member 20 can be shaken out of the 'saidcone as soon as it is pried upwardly into the large opening of the'key-hole slot 27. The tie end is then ready for another use.

The rounded nose 37 of the cone member 20 serves as a cam surface against which the inner shoulder adjacent the flattened portion 17 bears, after it is inserted within the key-hole slot 27. The rounded portion 37 also aids in the break-back action of the tie end 19. The length of the cone 20 provides a deep break-back of the tie 15 which prevents the migration of oxide from the tie to the outside of the wall. Referring to Figure 6, there is shown another form of tie locking structure. In this embodiment the flattened portion 17 of the tie 15 is provided with a flat washerlike member 38. The washer 38 is slidably carried upon the flattened portion 17 of the tie and is of a thickness which will permit it to enter the key-hole slot 27 within the cone 20. 'The washer member 38 extends upwardly as indicated at 39 into the key-hole slot 27 and is received within the slot 27 when in the locked position. The tie is thereby secured in place against accidental dislocation.

Figures 7 through ll illustrate a second embodiment of the present invention in which the cone member 20 is provided with a key-hole slot 39 extending into the cone from the top thereof. As shown in Figure 10, the slot 39 is out along the vertical axis of the cone member 20 and communicates with an inner tie retaining chamber 40 (see Fig. 8). The tie member 15 in this embodiment of the invention is provided with a collar 41 spaced from the end of said tie. The collar 41 is adjacent the flattened portion 17 of the tie 15. The end of the tie 15 is cylindrical as shown in Figures 7, 8 and-9. The interior of the retaining chamber 40 is provided with a top shoulder 42 and an inwardly extending nub 43 (best shown in Figure 9). When it is desired to connect the tie end member to the tie rod 15, the rod end is thrust into the key-hole slot 39 as shown in dotted lines in Figure 8. Thereafter, the tie is swung downwardly in the direction of the arrow in Figure 8 until it assumes the horizontal position shown in the drawings. The end of the tie rod 15 will bear against the shoulder 42 for the purpose of camming the tie rod downwardly into its position of rest-on the bottom of the retaining chamber 40. The collar member 41 prevents the t e rod from being 4 pulled out of the cone member 20. A secure fit of the tie rod 15 within the retaining chamber 40 is insured by the operation of the nub 43. A camming action is also performed by the rounded nose 44 of the cone member bearing against the shoulder formed where the rounded tie member 15 meets with the flattened portion 17 adjacent the rounded nose 14. This camming action also insures a tight fit of the tie rod 15 with the tie end member. In this embodiment of the invention weakening notches 16 are also provided in the tie rod and spanner holes 35 are used in the rear wall 36 of the cone member 20 for the hereinabove described purpose. The extending anchoring bar 21 in this embodiment of the invention is the same as that previously described. Once assembled the tie rod 15 and the tie end member shown and described as the second embodiment of the present invention remain together securely. No other wedges or locking mechanism are required for this purpose. After the concrete wall 34 has been poured and the tie rod broken on the weakening notches the remaining portion of the tie rod 15 may be slipped out of the cone member by forcing it upwardly until it may be pulled out of the key-hole slot 39. Since the cone members shown and described herein are of the order of 1 /2 inches long, only about 1 /2 inches of metal will be wasted in any tie rod use. Where tie rods are secured at each end by the structure shown herein there will be a total loss of approximately three inches of metal compared with almost a foot of metal using previously known structures.

In certain pouring operations and for certain other purpose it'may become necessary to leave a projecting tie rod after the pouring operation has been completed. For this purpose, the embodiment shown in Figures 12 and 13 has been devised. In Figure 12 the tie locking mechanism consists of a rectangular block 46 having a key-hole slot 47 in the top thereof similar to that of Figures 7, 8 and 10. The tie rod 15 is similar to that shown in'Figures 7 through 9 but projects beyond the 47. It should be pointed out that it is customary in the prefabricated wall form art to provide slots in the periphery edges of the wall forms to receive the ties therethrough. lt'will thus be possible to strip the form without removing the tie rod. Alternately, the forms 25 may be provided with small circular openings such as are indicated at 48 in Figure 12 to receive the collar members 41 therethrough.

When the wall has been poured the projecting end of the tie may be used for the purpose of anchoring facing materials or other structural elements of the wall. It will be apparent that these embodiments shown in Fig ures 12 and 15 may be used to anchor other elements to the projecting rod members without departing from the spirit of the present invention. Thus the projecting tie rods may be used in combination with the tie ends to support pipes, conduits, ducts and other building structures.

From the foregoing it will be apparent that there has been provided a tie assembly which may be used with great economy of metal and time and which has application to a wide variety of building operations.

Having thus' fully described the invention, what is claimed as new and desired to be secured by Letters Patent of the United States is:

1. A tie assembly for use with concrete receiving form structures comprising, an elongated rod, a flattened portion spaced from each end of said rod, a tie end member engageable with said tie rod, said tie end member consisting of a substantially cone shaped tie rod end receiving member having a tie end retaining chamber therein, a tie end engaging nub extending inwardly of the chamber, a tie camming shoulder formed in said retaining chamber and an anchoring bar extending outwardly from said end receiving member, and a keyhole shaped slot in said tie receiving member for coupling the tie rod to the tie end member.

2. A tie end assembly according to claim 1 in which the cone shaped tie receiving member is provided with an arcuate bearing face on the smaller end thereof and an end wall on its opposite end, said end wall being bored to receive a tie end twisting tool.

References Cited in the file of this patent UNITED STATES PATENTS 2,052,012 Beghetti Aug. 25, 1936 2,095,714 Pinaud et al Oct. 12, 1937 2,657,449 Hillberg Nov. 3, 1953 Erbe July 28, 1953