US1570814A - Reenforcing-bar support - Google Patents

Description

H. M. wooLLEY, JR

nsnuronms BAR surron'r Filed sept. 10.11924l Jan; 26 1926.

To @ZZ whom t may cof/warm Patented Jan. 26, 19726.

UNITED s` PATENT 'oFFicE.

HORACE M. WooLLEY, JR., or ALAMEDA, enuncian-IA.

" Imam*oncine#Brin SUPPORT.

Appiicaumfiied september 1d, 1924. seriai 110,736,873.

Be it known that I, HORACE M, WooiinEY, .I r., a citizen ofthe UnitedStates,.residing at Alan'ieda, county of Alameda, and State of California, have invented new and useful' Improvements in Reenforcing'- BarV Supports, of which 'the following is` a specif iication. n 1 f `f .This inventionrelates to afreenforcing bar support to be usedk in the construction lof reenforced concrete buildings.

In constructing concrete` buildings' and.

the like, it isv common..practicev to reenforce the beams, floor slabs, walls, coumns, etc., with long iron barsfor rods, etc. TheA reenforciiig iron is placed yin position Aafter' the-- forms have. been, completed or 'during the construction or erection of the saine', and considerable care must be taken to insure a proper spacing between the formsand the reenforcing rods and between therrods themselves, so that they will be properly embedded and bonded in the concrete, when this is poured and set. To insure such s pacing short sections of the reenforcing mate-,

` 'rial are often interposedy between the rods and the forms and tied with wire;v small blocks of concrete are employed in the samev way; the reen'forcing rods are in `some 1nstances suspended in the forms by means of wires, and in other .instances'specfically constructed bar supports aref'employed. In

other words a contractor will usuallyresort to whatever material happens to' be most plentiful or convenient at the time. lThis' results in waste of materials, inferior con-y struction, and in loss of time, as far'as the workers are concerned, and produces,any' thing but economy and efficiency. Furthermore, by resorting to the use of make-shift methods and materials, it often happens that the reenforcing rods are not suiiciently or rigidly secured and as such become displaced during the pouring andV tamping ofthe concrete, thereby causing improper bonding and weakening ofthe structure.

The object of the present invention is to overcome the objections referred to by providing a reenforcing bar support which may be used in beams, floor slabs, and in fact wherever reenforcing material is required; a bar support which is substantial; a bar support which is capable of receiving and supporting rods of any size and diameter; a bar support which permits any desired spacing between the rods; a bar support 'which willr positively secure the'rods and prevent displacement' whenffpouriiig or tamping Athe c'oncreteg'and further, Va bar Asupport which Vwill save time and labor by eliminating the expense and delay of tying the bars with wire, and which may be econoinically .manufactured.I'V v OneI form which my inventionfmay asr suine'is exemplified in the following'description Vandillustrated in the accompanyingdrawings', in which- Fig. l is a front view rof the bar support showing two reenforcing rods supportedv thereby.

Fig. 2 is a cross-sectionon liney 2 2 Vof Fig. 1. 1 f

Fig. 3 is aperspective view of a bar support .bent into a Z-sliape.

Fig. 4l isa perspective viewl vof the supporting bar showing it corrugated or anguvlarly bent throughout. its length to permit it'to be self-supporting when placed edgewise.

l Fig.. 5Qis a section of a concrete floor showing they position of the reenforcing 'rods and reenforcing rod supports.

Referring to the drawings in detail, and

particularly to Figs. l and 2, A indicates in 4general the reenforcin'g yrod support forming the subject matter of the presentapplication. The support is constructed of strap'.

iron or fairlyheavy sheet metal and is pro'- duced in strip form of suitable'lengths. One

edge is out by a diev or any other suitable means to form a series' of alternate teeth and spaces as'indicated at 2 and 3. The teeth are ypreferably thin, as av great amount of rigidity is not required. Infact it is desirable that they should be fairly easily crushed ordispl'aced as crushing or displacement of the teeth is resorted'towhen thereenforcing'V bent into numerous 'shapes to cause them to be self-supporting; or in other words to assume a vertical or edgewise position when so desired.

The actual use of the rcenforcing bar support is perhaps best illustrated in Figs. 1, 2 and 5. In Fig. 5 a 'section of a concrete floor `is illustrated In this view B indicates the loor slabs and C the beam-s supporting the same. It is common practice to reenforce both the slabs and the beams. rl`he rods employed are indicated at D and E.

In actual practice, when it is desired to erect a floor such as shown in Fig. 5, it is iirst necessary to construct the molds indicated at F. Vhe-n these have been erected, short sections of supporting bars or strip material, such as shown in Fig. 1, are placed in the bottom of the beams as indicated at G in Fig. I laid on top ot the bars and they are suitably lspaced apart. The rods are then struck by a hammer or any other suitable implement, and when so struck they crush down the teeth 2, as shown at 7 in Figs. 1 and 2. Seats are thus formed i'or the rods, the solid portion of the support holding them in the proper relation to the forms and the wedging action of the crushed teeth preventing the rods from being easily displaced. rlhey will thus be positively held in position and no amount of tamping or rough handling will displace them while the concrete is being poured into place.

"he reentorcing rods indicated at D are next placed in position and they are spaced with relation to the forms supporting the floor 'slabs by interposing the supporting bars as indicated at 8. All the rods are supported in a similar manner and a proper spacing is thus maintained between the forms and the rods, thus insuring proper positioning and proper bonding of the rods when the concrete is poured and set. It might further be stated that the reenforcing bar 'support here illustrated is universally adaptable. It may be manufactured in long strips, which may be bent as shown in Figs. 3 and d, or otherwise, or the strips may be cut and .bent on the site where the building is being erected. For instance, hundreds of short sections of reenforcing bar supports may be cut to proper length to fit the bottom of the floor beams indicated at C. Longer sections may be cut to support the rods D and so on.

The reeniiorcing rods are then l Such handling of material inl great quantities promotes economy by 'sav,

ing time and labor and thus does not only decrease the cost of construction, but also insures better workmanship and final strength, as far as the structure is concerned.

It will also be noted that the spacing of the reenforcing bars may be increased or decreased as desired, as it is only necessary to place the bars on top of the teeth 2 and then to crush the teeth Wherever the bars are to be seated by merely striking the bars with a heavy hammer or the like. Any spacing may thus be obtained and any size or diameter of rod may be employed without changing the size of the reentorcing bar support or otherwise changing the same.

W'hile certain features of the present invention are more or less specitically illustrated, I wish vit understood that various' changes in form and proportion may be resorted to within the scope of the appended claims. I similarly wish it understood that the materials and linish of the several parts employed may be such. as the experience and judgment of the manufacturer may dictate or various uses may demand.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- 1. A ree1ii`iorcing bar lsupport of the chai'- acter described comprising an elongated strip of metal adapted to stand on edge, and a pluralityof closely spaced, easily bendable teeth formed in one edge thereof.

2. A reen'forcing bar support of the char-v acted described comprising a elongated strip, which i's corrugated throughout its length to permit it to be 'supported 'edgewise, and a plurality of closely int-erspaced easily bendable teeth formed in one edge thereof.

3. A reenforced concrete structure comprising a plurality of elongated supporting members adapted to stand on one edge, a plurality of reenforcing rods adapted to be supported by said elongated members and disposed transversely or' said members, and a plurality of closely spaced teeth or tines formed in the upper edge of each elongated member, said teeth being easily crushed or bent to form seats for the reenforcing rods and to retain the rods against accidental removal. Y

Y HORACE M. VGOLLEY, Jn.

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