US1439737A

US1439737A - Reenforced concrete construction

Info

Publication number: US1439737A
Application number: US247123A
Authority: US
Original assignee: HOWARD M HOUGH
Current assignee: HOWARD M HOUGH
Priority date: 1918-07-29
Filing date: 1918-07-29
Publication date: 1922-12-26
Anticipated expiration: 1939-12-26

Description

Patented Dec. 26, 1922. i

"fairen WILLIAM B; notion, or circ'ro, Iliinois; Homann la. Hons-n mrnoo'ron or sain team aannemers emanata ccasmaucmrom Applicatitvn` led July 29,

To all @kom it may concern:

Be it known that l, VInniAM B. HoUGH, a citizen of the AUnitedStates, residing at Chicago, in the county of Cook and State versely of the bars and provided with bare' engaging or locking means and with gages for supporting the bars abovev the formwork. The supports or gages must be suiiieiently rigid and strong so as to support the bars at the desired distance from` the formwork. Said gages also should be of suiiicient strength to resist deformation in case a workman should step upon or otherwise place an excessive load upon one `of the reenforcing bars. The metal strip extending transversely ofthe bars, however, is ordinarily not subjected to a severe stress and therefore may be of light construction. To economize in construction and in freight charges, said metal strip may be of relatively thin, light material. The bar-engag ing or bar-locking means should be of such character as to securelyhold the bar against horizontal displacement and still be suffi-y ciently flexible so as to be readily bent into engagement with the bar.

It is an object of this invention to provide bar-spacing and locking means of such construction that each of the three elements, namely, the gage, the transverse spacing element, and the bar-lockingl means, may have individual characteristicsy as regards strength and rigidity.

Other objects and advantages of the invention will be apparent from the following description.

In the accompanying drawings, Figure 1 isa fragmental top plan view of one embodiment of my invention. Figs. 2 and 3 are fragmental views showing the spacing and securing 'device in fragmental side 1918.l `Serial No. 247,123'.

elevation and cross-section, respectively. F 4 is a perspective view of the device on 'an enlarged scale. tive viewof an alternative construction.`

ln the drawings,l A denotes the fornifworlt upon which the concretefis to bepcured. indicates the reenforcing bars.V rlhe spacing and securing device comprises a longif tudinal member consisting, in thisinstancm of a metal strip 1.. The bar-engaging or locking means may consist, as herein showA of pairsof arms 2 cut from the strip 1 and originally bent'into the position indicated in Fig. 4:. After the bars B have been put in place, the arms 2 may be bent as indicated in Figs. 1, 2 andl 3 to embrace and secure the bars `against lateral displacement.

ln the construction disclosed in Figs. 1, 2, 3 and l the means for supporting the bars atthe desired distance above the ormwork consists of gages 3, each formed by bending a piece of hoop iron, sheet metal or other suitable material into il-form. Said gagey may be secured to the longitudinal member 1 in any preferred mannery as by providing tongues 4 upon the ends` of the arms of the V, passing said tongues through openings in the longitudinal member and kbending said tongues as indicated in the drawings.

In Fig. 5 there is shown one of various possible forms of gages, the gage `5 illustrated in said figure consisting of a piece Fig. is a perspec of sheet metal bent into inverted U-form llt will be observed that the portion 7 of n the longitudinal member which extends across or bridges the space between the side arms of the V-shaped gage 3 serves to tie said arms together vand prevent said side arms from spreading. A very strong and reliable support for the reenforcing bar is thereby obtained.

Since the gage is formed separately from the longitudinal member 1. neither is limited by the other with reference to the spacingof the bar-engaging arms and gages along the longitudinal member7 the cutting' of kthe arms or the detail Construction of the gage and the bar-engaging means.

l claim as my invention: s

l. A bar spacing` device for reenforeed concrete construction comprising` at continuous substantially flat metal strip having a pair of integra-l llexible arms struck 'from the lateral edges thereof, a second strip eX- tending transversely of said first mentioned strip and bent to form a gage, and lugs struck downwardly from saidl lirst strip and rigidly engaging said supporting` 21A. bar-spacingv device for reenforced Concrete Construction comprising s continuous substantially :dat metal stri) havin@ a pair ot integral lieXiblebar-engaging arms extending upwardly therefrom,' with a portion of said strip between the bases of the arms and in the plane of the tongues on said :besef/srr body of the strip, and a separately formed gage below the strip opposite the spa-ce between the bases of 'said arms, and st ip engaging; said gage to rigidly secure tbe same to seid strip.

` A brrr sparing' device for reen'lforeed eonrrete Construction comprising)r a continuons substantiall flat metal stri) havinOf ft t b pair of integral 'flexible arms struck from the `lateral edges thereof, a second strip bent to form a gage to support said irst-menf tioned strips., and llugs on one of said strips adapted' to bebent" longitudinally of Said Vlrst strip torigidly secure seid second strip thereto, said lugs being spaced from the laterdV edges'of lsaidrst strip.

ln testimony whereof, l have hereunto set my hand.

WllLLIArM B. HOUGH.