US1517102A - Jiioxjjiay uott - Google Patents

Description

Nov. 1924- 1,517,102

H. E. BRICKER SPAOING BAR Filed May '17 1924 5 (MIMI 1H 9 2 Patented Nov. 25, 1924.

UNITED STATES PATENT OFFICE.

HARRY E. BRICKER, O1? WEST VIEW, PENNSYLVANIA, ASSIGNOR T0 NATIONAL METAL PRODUCTS GOMIANY, 0E PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

sracine BAR.

Application fi led May 17,

To all zrlmznyit may cooicci'a:

Be it known that I, Haney E. BRLGKER, a citizen of the United States, residing at W est View, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Impnovements in Spacing Bars, of wnich the following is a specification. 7

My invention consists of an improvement in spacing bars for reinforced concrete con struction for use in connection with transverse floor or slab members.

bar for the reinforcing or ai'ichoring members adapted to maintain the same at the desired location within the body of concrete, to fixedly and positively hold and locate the members, and to maintain its own supporting position within the concrete body without tendency to shift;

It consists generally of achannel nieinber having horizontally disposed lateral flanges 0t suliicient area to provide continuous bearing portions in the concrete, said flanges being fitted at intervals and pressed downwardly to provide ten'iporary supporting pedestals, and with partly severed tongues slitted from the flat web portion ot the channel member for engagement with the reinforcing anchoring .n'ienil ei's.

The device in general, is similar in its in tended use to that shown in patent ot Motocger #1,-l21,807. its object is to provide, in a single integral nien'iher, features of improvementin construction adapted to pro duce a more serviceable device, with greater economy and facility of manufacture.

In the drawings, illustrating one preferred embodiment of the invention;

Fig. 1 is a perspective view showing a portion of my improved spacing bar as used with the cross reinforcing members;

Fig. 2 is a view in side elevation, showing the bar as applied and with relation to the supporting form;

Fig. 3 is a plan view of Fig. 2;

Figs. 4c and 5 are cross sections on the lines IVIV and V V respectively of Fig. 2.

The bar, of any desired length, is 01? channel form pressed from sheet metal. having a middle upper web down "ardly extending preferably outwardly flared sides 33, and oppositely extending lateral hori- It has in view to provide a SI'IPPOltlllg and spacn'ig 1924. Serial No. 713,958.

zontal flanges sil, ot ample width to provide acontinuous broad bearing footing in. the concrete. At somewhat long separated intervals, the flange a is severed from the base portion of side 3, at opposite sides, by suitable slitting dies, e liecting severance of the flange from the base of the side, as indicated at The severed portion ot the flange is bent downwardly, "forming a lowered shoe 6, having a Hat inidcr face parallel with the under side of the integral portions of flange 4-, and adapting the bar to be supported upon the upper surface oi? the usual temporary form boards 7, as clearly indicated in 2, i and 5.

vBy this construction, the main lmdy portion of the bar located 'sutliciently far above the fornii, more orwless, according to the thickness-cit" the concrcte floor, to locate it at the desired positioirinid with the flanges 4 spacedavell" above the term, so as to permit tree flow of the concrete underneath and to the interior cavity of the channel, while at the same time cmnpletely en'ibedding and supporting the entire bar by its flanges and also by web 2 within the bot y of the semi-fluid concrete.

By reason of the broad SUPPQl'tlDg areas of the flanges it, any tendency to sag or sink through the concrete, due to superimposed weight betwecn the spaced pedestal G, is positively avoided. A further and important advantage in manufacture is that, in slitting the pedestals from the sides, the shearing dies act against a flat surface, which is at right angles to their vertical movement, avoiding the objectionable tendency to lateral strain and rapid wear of the slitting dies. 1 have found in practice that, where such dies are used, acting against an inclined surface, as in an angle form of bar, there is great difliculty in etlecting accurate slitting, with accompanying distortion and wear and necessary frequent repair or renewal of the cutting dies.

A further advantage is that the original flat and parallel relationship of the flange is maintained in the severed portion, without necessity of any twisting or other bending. producing a supporting pedestal or shoe of the best available construction.

The web 2 of the channel is also slitted at desired inter ads or locations, as indicated at 11, to "form the upwardly extending readily understood. The tongues 8 may be slitted out of the web at desired intervals by suitable mechanism, either separately or simultaneously, with the formation of the pedestal 6. Ordinarily, the latter are pro vided at or near the end portions of the bar or standard of any desired length, with the intervening unsupported portion which is adapted to lie in the concrete and be supported thereby, as explained above, due to the broad bearing character of the horizontal flanges 4.

The device may he made of any suitable dimensions, of comparatively thin sheet metal, and, dependent on the dimensions of the concrete floor, may be easily located and spaced by the user, dependent on the local conditions. The spacing bar as thus made comparatively simple, economical in construction and well adapted to perform the desired functions in a satisfactory manner, and overcomes the rather serious objections to other forms of spacing bars heretofore used.

Having described my invention, what I claim is:

1. A spacing bar for concrete reinf0rcement consisting of a sheet metal channel member having a fiat middle web, sides and laterally extending flanges having integral portions severed from the sides and pressed downwardly providing longitudinal fiat faced supper-tin shoes with depressed bearing portions parallel with the lateral flanges, and having partially severed holding tongues extending upwardly from the middle of the channel Web.

2. A spacing bar for concrete reinforcement consisting of a sheet metal channeled member having a flat middle web, outwardly flaring sides, and laterally and oppositely extending flanges parallel with the web having integral portions severed from the sides by slitting along their bases and pressed downwardly providing longitudinal flat faced supporting shoes with depressed flat bearing portions parallel with the lateral flanges and merging therelnto by curved end portions, and having partially severed transversely fiat holding tongues extending,

upwardly from the middle of the channel web.

In testnnony whereof I hereunto aflix my signature. I

HARRY E. BRICKER.

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