US1725239A - Support for concrete reenforcements - Google Patents

Description

Allg- 20, 1929- J. A. wlLLlAMs Er AL 1,725,239

SUPPORT AP'OR CONCRETE REENFORCEMENTS Filed Oct. 8, 1926 l J5 E I IlTj l l l 7: l w1 --.I u s L J5 i \\\7\\\,\\\

s l l 9 INVENTO g J Jl @im 'we Patented Aug. 2G, 1929.

UNITED STATES PATENT OFFICE. i

JOHN A. WILLIAMS, OF PITMAN, NEVIr JERSEY, AND WALTER L. WHITMAN, 2D, 0F GERMAN TOWN, PENNSYLVANIA.

SUPPORT FOR CONCRETE REENFORCEMENTS.

Application filed October 8, 1926.

Our invention relates to means for supporting reenforcement for concrete roadways and bases, floors, ceilings, or the lrke.

One object of our invention is to provide an improved manner of temporarily supporting reenforcing members for concrete, the supporting means being so formed that it can be withdrawn before the concretel in which the reenforcement is imbedded, has

1o solidified.

Another object of our invention is to p'rovide an improved means for supporting metal reenforcing in a given plane.

Still another object of our invention is to provide an improved means for supporting layers of reenfoi'cing material in definitely spaced superposed relation.

One form which our invention may take is shown in the accompanying drawing, wherein Figure 1 is a cross sectional view of a road bed, showing our apparatus in position, ready for pouring of the concrete; Fig. 2 is a view taken on the line II-II of Fig. 1, showing a portion of the concrete in position; Fig. 3 is a view showing one of the supporting' members of Fig. 2, tilted to inoperative position; Fig. 4 is a plan view of a portion of the apparatus of Fig. 1, and Fig. 5 is a view, on an enlarged scale, showing means whereby the supporting bar of the three figures may be mounted at different distances above the curb or side forms on which the supporting members rest.

In Fig. 1, the road bed or sub-grade upon which the concrete is to be placed is represented by the numeral 6. Side forms 7, preferably of iron or steel, are provided for defining the width of the roadway. Two sheets 8 of reenforcing fabric are shown mounted in position for embedment in the concrete, but it will be understood that a single sheet may be employed in some instances, and that more than two sheets may be employed, if desired. Also, the reenforcement need not necessarily be in the form of fabric. Each sheet of fabric 8 may be composed of metal rods or wire welded or otherwise secured together to form a mesh as shown more clearly in Fig. 4.

In the building of reenforced roadways, difiiculty has been experienced in so supporting the sheets of fabric that each sheet will Serial No. 140,279.

lie in a given plane, and will be imbedded in the concrete to the proper depth. In some cases, the authorities have therefore required that a layery of concrete of definite thickness be placed between the forms, over a given distance, that a` sheet of fabric then be placed on this previously poured concrete and that additional concrete be then poured over the fabric. ing the concrete mixing apparatus and materials back and forth along a given stretch of roadway several times, depending upon the number of layers of concrete and fabric desired.

By our arrangement, the reenforcement is so accurately supported that the concrete can be poured to the proper thickness, in the first instance, thus rendering it possible to simply move the concrete mixing apparatus and the materials along the stretch of roadway which is to be formed and rendering unnecessary the shiftingback and forth of the apparatus to pour successive layers.

Another advantage present in our device resides in the fact that the members 7 which may represent either the ordinary side forms or curbing, serve as a fixed gage by means of which t-he plane of the fabric is accurately determined, whereas, in prior practice, the fabric supports have rested upon an uneven sub-grade or road bed.

The fabric-supporting structure comprises a bar 9 which is generally of tubular form and normally rests upon the members 7. A series of bolt-like members l() extend through holes that are formed in the bar 9 and are provided at their lower ends with hook portion 11 that engage the fabric sheets 8. rlhe members 10 are threaded, so that by turning the nuts 12, the fabric can be adjusted in a vertical direct-ion. The handle 13 of spring-like material is secured to one or both ends of the bars 9. These handles have their outer ends turned slightly inward so that they can be sprung beneath the upper flanges of the side forms 7 and thus prevent tilting of the fabric supports under the weight of the fabric and the concrete while being poured. l

lVhen it is desired to remove the supports, the handles 13 are sprung upward from beneath the flanges of the side forms and the This has necessitated shift' bar 9 rocked toward the position shown in Fig. 3, thus permitting removal of the abricssupporting structure. It Will be understood that this removal Will take place before the concrete has completely set.

In Fig. 5, We show a plate or block 14 of eccentric form. One ot these blocks may be mounted upon each end of the bar 9. The blocks 14, When lying in the posit-ion shown in Fig. 5, rest upon the side forms 7, thus holding the bar in elevated position, and causing imbedment of the fabric sheets at higher planes in the concrete. This arrangement, in combination With the adjustment otl the nuts 12, Will permit the convenient positioning of one or more sheets ot' fabric at any desired height relative to the road bed. l'Vhen the position ot the blocks 14 is reversed, the bar 9, Will, ot' course, be disposed in a loWer position than that shown in Fig. 5. The handle 13a is shown as extending through the bar 9 and detachably held in place therein by a nut 15, so that the blocks 14 can be readily removed and replaced, as desired.

Ve claim as our invention z- 1. Means tor supjporting concrete reenforcement, comprising a plurality of rotatably mounted bars, members depending from each of said bars, and reentorcement-supporting hookson each of said members, the said hooks all extending in the same general direction and transversely oi the bar.

Means for supporting concrete reenforcement, comprising a bar having rocking surfaces curved about its longitudinal axis, and reent'oreement supporting members depending from said bar and extending transversely thereof.

3. Means for supporting concrete reenorcement, comprising a bar, fabric supporting members extending to a plane beneath said bar, and eccentrically formed blocks loosely connected to each end et said bar 4. Means tor supporting concrete reenforcement, comprising a bar adapted to be supported on the side forms of a roadway, means depending from said bar for supporting the reenforcement, and a yieldable member secured to said bar in position to extend beneath one ot said forms.

5. Meanstor supporting concrete reenforcement, comprising a supporting member, a hook member depending therefrom in position to engage reenforcement disposed in a plane beloW the supporting member, and means permitting rotative movement of said hook member about an axis parallel to the said plane, to etiect disengagement thereof from the reeniiorcement.

6. The combination with side :terms Yl'or roadways and the like, of means for supporting reentorcement between said forms, comprising a hook-supporting structure carried by said forms, hook members depending from said structure, and means permitting rotative movement ot' said hook members about axes parallel to the plane in Which the reinforcement lies.

7. Means for supporting concrete reenorcement comprising a supporting member, a hook depending therefrom in position to lie beneath the fabric When the supporting member is in one rotative position, means permitting rotative movementot the said member about an axis parallel to the plane of the fabric, and means for preventing r0- tative movement ot' said member to inoperative position under the Weight of the reent'orcement and the concrete.

In testimony Whereot We, the said JOHN A. WILLIAMS and WALTER L. WHITMAN, 2d, have hereunto set our hands.

JOHN A, WILLIAMS. WALTER L. WHITMAN, QD.

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