US2753611A - Half concrete form chase mounting - Google Patents

Description

July W, 1956 G. F. SCHAFER ETAL 2,753,611

HALF CONCRETE FORM CHASE MOUNTING Filed Dec. 1, 1953 2 Sheets-Sheet 1 Fig 7 ::.....z Hg 2 2 a g 7 i w 3 INVENTOR; George F Sc/mfe/ B Leo l-T/Vauman July m 1956 e. F. SCHAFER ETAL 2,753,611

HALF CONCRETE FORM CHASE MOUNTING Filed Dec. 1. 1953 2 Sheets-Sheet 2 Fig 6 Fig 6 INVEN TOR.

George F. Schafer BY Lea F. lVUU/flU/l United States Patent HALF CONCRETE FORM CHASE MOUNTING George F. Schafer and Leo F. Nauman, Sebastopol, Calif. Application December 1, 1953, Serial No. 395,334

2 Claims. (Cl. 25-428) This invention relates to improvements in the means of mounting a chase on one-half of a concrete form prior to the erecting of the other half of the form.

The principal object of this invention is to provide means for securely anchoring to one of the side form boards of a concrete form a chase which will be held against the form board so as to form an opening through the concrete to be later poured between the form boards.

A further object is to produce a device of this character wherein the removable ends of the chase may be readily secured and removed.

A further object is to provide means for twisting the securing wires both against the end of the chase and also within the chase.

A further object is to provide ready means for accurately locating the chase on the form board.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numbers are employed to designate like parts throughout the same,

Fig. l is a side elevation of the assembly tool;

Fig. 2 is a cross sectional view taken on the line 22 of Fig. 3;

Fig. 3 is a fragmentary top plan view of the tool shown in Fig. 2;

Fig. 4 is a plan view of the tightening washer;

Fig. 5 is a cross sectional view taken on the line 5--5 of Fig. 7;

Fig. 6 is a side elevation, partly in cross section, of the chase-securing means;

Fig. 7 is a vertical cross section of the chase and end plugs mounted on the securing means, together with the twisting tool; and

Fig. 8 is a view similar to Fig. 7, showing the securing means completely twisted and the second form board in place.

In the building of concrete walls, it is often necessary to provide openings therethrough so that cables, pipes, conduits and the like may be threaded through the wall at designated points.

It has been customary either to drill holes after the wall has been completed, or to insert tapered wooden plugs which were later removed, or to employ short pieces of leader pipe extending through the form boards.

All of these arrangements are unsatisfactory for the reason that the drilling of holes through the concrete is a time-consuming job; the use of wooden plugs is unsatisfactory as they often are broken during the pouring of the concrete and cannot be driven out, or they become misaligned; and the use of leader pipe is unsatisfactory for the reason that it is very difficult to secure the same to the form boards without splitting the ends and nailing it to the form boards, which leaves a very unsightly finishedjob.

Applicants have therefore devised a new arrangement which may be positioned on one of the form boards before the second parallel form board is erected.

It is of course understood that in order to pour a concrete wall, it is first necessary to have two spaced forms between which the concrete is poured, and from here on it will be considered that we are referring to such a structure when we refer to one or the other of the form boards.

In positioning the various chases, the contractor determines from the plans at what points it is necessary to leave openings through the concrete structure. He then designates on one of the form boards the spot or spots at which the chases are to be secured.

In the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of our invention, the numeral 5 designates one of the form boards and the numeral 6 the opposed form board.

In order to secure our chase to the form board 5, for instance, a tool 7 is employed which has a point 8. This point is used for initially forming a hole in the board 5 so that a screw eye 9 may be threaded thereinto. The screw eye has a spacing washer 11 and is turned into the wood by using the point A through the eye. Thus the tool 7 becomes a wrenchlike arrangement to bring the head of the eye tightly against the washer 11.

The eye has formed thereon a wire bent upon itself and initially twisted as shown at 12, thus leaving free spaced, substantially parallel ends 13 and 14.

When the parts thus far described have been positioned in the form board as shown in the Fig. 6, we thread thereon an end plug 16, which plug has an opening 17 therethrough sufficiently large to pass over the twisted portion 12. We now place a tubular chase member 18 over the wires 13 and 14 so that it assumes the position shown in Fig. 7 against the end plug 16,. after which a second end plug 19 is threaded over the wires 13 and 14 so as to assume the position shown in Fig. 7.

We now place upon the wires 13 and 14 a tightening washer 21 which tightening washer has holes 22 formed therein. The tool 7, which also has a pair of spaced holes 23, is threaded on the wires 13 and 14 and the tool is given an initial twist so as to form a pigtail 24, drawing the washer 21 tightly against the plug 19. Further twisting will now cause the parallel wires between the twist 12 and the plug 19 to begin to twist thus drawing the two plugs 16 and 19 into intimate contact with the ends of the chase 18.

As soon as the parts have been tightened sufficiently, the wires 13 and 14 are snipped off and it is to be here noted that during the twisting operation, the two Wires 13 and 14 are bent at substantially right angles so as to lie within the channel of the tool as shown in dotted lines in Fig. 7.

Of course, it is obvious that in removing the tool these bent ends of the wires 13 and 14 are again straightened out so that the tool may be removed and the snipping operation accomplished at a point within the end of the plug, so that the end of the plug will present a smooth, flat surface against which the form board 6 may be placed.

It is thus apparent that all the objects above set forth will be accomplished with our chase mounting means.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the material, size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described our invention, we claim:

1. A chase mounting for concrete forms comprising a fastening member for securing to one of the form boards, a wire secured to said fastening member, said wire being bent upon itself to form parallel ends, a pair of end plugs slidably secured on said wire, a tubular member extend ing between said plugs, the ends of said Wires being twisted at a point outside of the end of the plug remote from the fastening member to move said plugs into engagement with said tubular member, and means for confining the initial portion of said twist to a point outside of said plug, remote from said fastening member, and secondly to twist-said wires at a point between said plugs.

2. A mounting for chases comprising a fastening memher for engagement with a form board of a concrete'form, a wire engaging said fastening member, said Wire being bent upon itself and initially twisted adjacent said fastening member, a pair of plugs slidably mounted on said wire, a tubular member extended between said plugs, a tightening washer slidable on said Wires, said washer having parallel openings therethrough for the reception of the individual ends of said wire, the ends of said wires being twisted at a point outside of the plug remote from said fastening member to move said plugs toward each other.

References Cited in the file of this patent UNITED STATES PATENTS 1,258,130 McDonald Mar. 5, 1918 1,664,152 Beghetti Mar. 27, 1928 1,744,507 Runden Jan. 21, 1930 1,746,696 Dows Feb. 11, 1930 1,875,463 Jones Sept. 6, 1932 1,960,502 McMillan May 29, 1934 2,286,564 Newell June 16, 1942 2,408,149 Miller et al Sept. 24, 1946 FOREIGN PATENTS 612,813 France Nov. 2, 1926

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