US3447771A - Reinforcement for concrete wall form connectors - Google Patents

Description

June 3, 1969 J E. TR|MMER 3,447,771

REINFORCEMENT FOR CONCRETE WALL FORM CONNECTORS Filed Aug. 14, 1967 30 xl /4 1 F15. i.

32 rle 22 I NV EN TOR dames 5 7kb/mer TTORNEYS United States Patent O 3,447,771 REINFORCEMENT FOR CONCRETE WALL FORM CONNECTORS `lames E. Trimmer, 7713 E. 113th St., Kansas City, M0. 64134 Filed Aug. 14, 1967, Ser. No. 660,464 Int. Cl. E04g 17/04, l] 08 U.S. Cl. 249-192 1 Claim ABSTRACT OF THE DISCLOSURE The success and acceptance of the conventional pin and wedge type of connector for concrete wall forms is evidenced by its widespread use, but there exists a dilllcult problem that has not heretofore been solved relating to damage to the form with resultant replacement costs. To the end that the forms may be rapidly disassembled, it is the current practice to remove the connector by hammer blows to the wedge and to the pin with resultant damage to the form at the pin-receiving hole of the flanges.

It is the most important object of the present invention, therefore, to provide a protection for the forms through use of a hard metal liner within the holes capable of withstanding the abuse to which the form is subjected during use, especially during removal of the connectors. Another important object of the instant invention is to solve the aforementioned problem through use of the hard metal liner by the provision of an inexpensive plate which serves to hold the liner in place through an interconnection between the plate and the liner as well as the plate and the corresponding flange of the panel.

In the drawing:

FIGURE 1 is a perspective view illustrating a portion of a concrete wall form illustrating the reinforcing connector made pursuant to my present invention;

FIG. 2 is a fragmentary perspective view of the wall form partially exploded and broken away to reveal details of construction of the connector;

FIG. 3 is a view similar to FIG. 2 illustrating the connector in place;

FIG. 4 is an enlarged, fragmentary, cross-sectional view taken along line 4 4 of FIG. 3; and

FIG. 5 is a vertical cross-sectional View through one of the flanges as well as through the reinforcing liner and its mounting plate.

Wall form includes a plurality of side-by-side panels 12 provided with laterally extending flanges 14 having aligned openings 16 which normally receive connecting pins 18. Pins 18 have heads 20 on one end thereof together with slots 22 for receiving locking wedges 24.

3,447,771 Patented June 3, 1969 Disassembly of the panels 12 is normally accomplished by hammer blows to the beveled end 26 of the pin 18 which loosens the wedge 24 and as a result of such hammering action, the holes 16 become damaged, .oftentimes to the point where the entire panel 12 must be replaced.

In accordance -with the instant invention, therefore, I provide a tubular liner 28 for each hole 16 respectively made from any suitable hard metal such as steel capable of withstanding the aforementioned abuse and having a bore therethrough of sulllcient diameter to receive the pin 18, as best illustrated in FIG. 4.

The liner 28 of my improvement is held in place within the corresponding opening 16 by a plate 30 held flatly against the corresponding flange 14 by a pair of rivets 32. It is to be noted that the plates 30 are perforated to receive the liners 28, the latter being rigidly secured to the plate 30 by a weld 34 surrounding the liner 28.

With this construction the plates 30 may be stamped from any suitable inexpensive sheet material, and the entire protector 28-30 for the openings 16 may be quickly and inexpensively manufactured without need for machine or other costly operation. Such protector is characterized by long wear and by the ease in which it may be replaced without appreciable cost from time to time as may become necessary, thereby adding considerable life to the panel 12.

Having thus described the invention, what is claimed as new and ydesired to be secured by Letters Patent is:

1. In a concrete wall form including a plurality of panels provided with flanges having aligned openings, a connector comprising:

a hard metal, tubular reinforcing liner in each opening respectively;

a pin passing through the liners,

said pin having a head on one end thereof and a slot adjacent its opposite end;

a wedge in the slot for clamping the flanges between the head and the wedge;

structure attaching the liners to the flanges,

said structure including an elongated, rectangular plate mounted on each liner respectively and secured to the corresponding flange,

each plate having a hole receiving its liner, there being a Weld around the hole attaching the liner to the plate; and

rivets securing the plates to the flanges,

each of said liners having a length equal to the thickness of a corresponding flange,

said liners being in abutting relationship.

References Cited UNITED STATES PATENTS 3,077,653 2/1963 Ward 25-131 J. SPENCER OVERHOLSER, Primary Examiner. D. W. JONES, Assistant Examiner.

U.S. Cl. X.R. 249--219

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