US1202359A - Joint for reinforcing elements. - Google Patents

Description

G. C. BRAUMULLER.

lOlNT FOR.REINFORCING ELEMENTS.

APPLICATION min MAR.20,1915.

l ,ww Patented oct. 24,1916.

/l TTUHNEY GEORGE C. BRAUMULLER, 0F NEWARK, NEW JERSEY, ASSIGNOR TO CHARLES F. VARNEY ANDk PETER IGOE, BOTH OF NEWARK, NEW JERSEY.

JOINT FOR REINEORCING ELEMENTS.

Specification of Letters Patent.

Patented (1ct. 211, 1916.

Application filed March 20, 1915. Serial No. 15,703.

To all whom t may concern:

Be it known that I, GEORGE C. BRAUMUL- LER, a citizen of the United States, and resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Joints for Reinforcing Elements7 of which the following is a specification.

rlhis invention relates to certain improvements in joints for reinforcing elements and more particularly to an improved means for rigidly securing together two superposed reinforcing bars which are deformed so as to have interlocking engagement.

I have illustrated my invention in connection with a type of bar in which there are side flanges bent to sinuous or wavy form so as to present projections and depressions adapted to fit together and prevent relative longitudinal movement of the bars when the latter are superposed in proper registry. For holding the bars in this position, I provide a clamp and a wedge adapted to be driven between one of the bars and the opposed clamp portion.

The main object of my invention isfto so form and design this wedge in relationship to the parts with which it coperates so that after it has been driven into place, it may be very readily locked against return movement.

Reference is to be had to the accompanying drawings in which similar reference characters designate corresponding parts in the several views.

In these drawings, Figure 1 is a side elevation of a construction embodying my invention, the wedge being shown in the position which it occupies when rst driven into place; Fig. 2 is a top plan view of the parts shown in Fig. 1, the end of the wedge being shown as split and spread apart; Fig. 3 is a transverse section on the line 3 3 of Fig. 1; Fig. 1 is a side elevation similar to a portion of Fig. 1 but showing the wedge distorted or bent to follow the depressions and elevations of the adjacent bar, and Fig. 5 is a side elevation of a form for attaching shear bars.

In the accompanying drawings, I have illustrated one embodiment of my invention in which there are employed superposed reinforcing bars 10 and 11, each having a central body portion 12 and side flanges 13. There are two of these flanges lie in parallel planes.

sent a series of projections and depressions and the other edge of each flange is preferably substantially parallel to the outer edge of the corresponding fiange upon the opposite side of the body portion. The depressions of the flange on one side may come directly opposite to the depressions inthe other flange on the same side, or the depressions of one flange may come' opposite to the projections of the other flange on the same side, as illustrated. Any number of bars of this character may be directly superposed `and the projections of the two flanges of one bar will enter the depressionsof the opposed flanges of the adjacent side of the other bar so that the bars cannot move longitudinally relativelyto each other except upon a corresponding lateral or outward movement. For preventing such movement, I provide a clamp adapted to encircle the superposed bars. As shown, I employ a rod or bar 14: bent to lie along three sides of the superposed bars and terminating in hooks, loops, or apertures 18 at each end projecting beyond the other side. A rod or bar 19 inserted through these hooks, loops or apertures, completes the clamp. The side members of the clamp will prevent the bars from moving laterally. In order to prevent one bar from rising out of engagement with the bar beneath, I employ a wedge 15 which forms an important part of my present invention. This wedge is preferably of substantially the same width as a bar and at one end is of such thickness that it may be readily inserted between the flanges of one bar and the adjacent transverse portion of the clamp, while the opposite end of the wedge is sufficiently thick to prevent the wedge from passing all of the way through.

My improved wedge is slit lengthwise from the thinner end so as to provide two separate prongs or lingers 16 and 17 disposed above the two flanges of the adjacent bar. After the wedge is driven into place, these two fingers or prongs are so bent or distorted as to prevent the wedge from return movement. This is preferably done not only by spreading the two flanges the contour of the portion of the bar directly therebeneath. A

As particularly shown in Fig. 4l, the projecting portion of the prong 17 lies above a depression in the one flange while the projecting portion of the prong 16 lies across a projection. 'A light blow to the intermediate portion of the prong 17 and a similar blow'to the tip 'end of the prong 16, will bend these portions downwardly into the depressions of the flanges therebeneath so that the wedge will be effectively prevented from return movement. In some cases, I may bend these prongs to make them follow the contour of the depressions and elevations therebeneath without any spreading apart of said prongs and in some `cases I may rely solely upon the spreading action.

I do not Wish to limit myself to the spe- .cific form of barsshown, as my invention is applicable for use in connection with other deformed bars designed to interlock when super-posed. By varying the size of the clamp, any desired number of bars may be held together.

My device may be used for securing together the overlapped ends of two reinforcing bars so as to eifectively prevent any longitudinal movement of one in respect to the other as shown in Fig. 1, or it may be used for attaching a shear bar to one or more tension bars as shown in Fig. 5. The wedge may be inserted either above or below the bars and the clamp may be made of a rod or bar, or round, square, or any other desired cross section.. The size of the bar used in making the clamp may be varied in accordance with the size of the reinforcing bars and the strain towhich the clamp is to be subjected.

Having thus described my invention,

what I claim as new and desire to secure by Letters Patent is:

1. The combination with a pair of metal reinforcing bars provided with a plurality of projections and depressions fitted together and adapted to prevent relative lonn gitudinal movement of said bars and at least one of said bars presenting projections and depressions on the side opposite to the other bar, and a metal clamp surrounding said bars and adapted to prevent the relative lateral displacement of said bars, of a wedge cooperating with said clamp and bars and adapted to hold them firmly together, the said wedge having the smaller end thereof slitted lengthwise to provide two separate prongs and distorted after insertion.

2. The combination with a pair of metal reinforcing bars provided with a plurality of projections and depressions fitted together and adapted to prevent relative longitudinal movement of said bars and at least one of said bars presenting projections and depressions on the side opposite to the other bar, and a metal clamp surrounding said bars and adapted to prevent the relative lateral displacement of said bars, of a wedge cooperating with said clamp and bars and adapted to hold them firmly together, the said wedge having the smaller end thereof slotted lengthwise to provide two separate prongs, each disposed above separate depressions or elevations of the adjacent bar and each distorted after insertion to follow said last mentioned projections and depressions.

Signed at New York city, in the county of New York, and State of New York this 19th day of March, A. D. 1915.

GEORGE C. BRAUMULLER. i

Witnesses:

ANN M. MURRAY, FLORENCE LnvInN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G.

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