US1887890A

US1887890A - Bar support

Info

Publication number: US1887890A
Application number: US426456A
Authority: US
Inventors: Robert R Robertson
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-02-07
Filing date: 1930-02-07
Publication date: 1932-11-15
Anticipated expiration: 1949-11-15

Description

Nov. 15, 1932. R. R. ROBERTSON BAR SUPPORT Filed Feb. 7, 1930 ill:-

I w- 7% 0 WI. m r a 0 p Patented Nov. 1 5, 1932 UNITED STATES ROBERT R. ROBERTSON, OF CHICAGO HEIGHTS ILLINOIS BAR vSUPPORT ppl ation filed, b uary In concrete road construction work and reiniorced concrete structures of different kinds, has been the custom to embed a re} inforcingmesh or screen together with transversely disposed dowel bars or rods in the concrete above the road sub-grade. The reinforcing mesh is usually constructed of rods or reinforcing members positioned at right angles with respect to one another and said 1,1) rods, where they cross, may be brazed or welded together or if preferred the reinforcing rods may cross one another or may be held position by wedge members or the like.", I

Toproperly position a reinforcing mesh and dowel bars in position'at different ele vations above a road subgrade, the present invention provides an improvedsupport or bracket adapted to be conveniently positioned to stand upon the roadsub-grade to properly hold crossed reinforcingmembers wedged in seated engagement in recesses or brackets provided in the upper end of the support whilethe same bracket is adapted also to afi'ord a convenient support for a transversely positioned dowel bar.

It-is an object of this invention to provide an improved light weight sheet metal bar support adaptedto have crossed reinforcing mesh rods'snpported on the upper end therei of and held in position by means of wedge keys while the intermediate portion of the bar support is constructed to afiord a pocket support for a transversely disposed rod or .35 dowel bar which may be secured in place by bending over a lip forming a part of the support pocket for said'dowel bar. I It is also an object of this invention to provide an improved bar support of unitary con 40 struotion provided with recesses or'pockets for receiving crossed reinforcing members and dowel bars, said reinforcing members adapted to be locked in position by means of wedge keys or the like.

It is an object of this invention to provide a metal reinforcement support adapted to be constructed of light weight sheet metal shaped to afford an angular apertured stand? ard provided with integral supporting feet at lower end, while the upper end is pro- 7, 1930. Serial n 25,45

vided with apertured lugs or fingers and with recesses for the reception of crossed reinfforcing rods and wedge pins for locking said rods in position said support furthermore having a dowel bar socket formed therein and provided with a locking finger norlezrten- V sion which is adapted to be bent into a lockv ing posltlon over a dowel bar after bar has been supported in place.

"Other and further important objects of this invention will be apparent fromthedisclosures in the specification and the accent panying' drawing. 7 k V v i I i The invention '(in a preferred form) is illustrated in" the drawing and herein-after more fully described. I H

On the drawing: s

Figure 1 is'a fragmentary top p la'n View of a portion of 'a"concrete road sub-grade hav ing mounted thereon a pluralityflof spaced improved bar supports embodying the prin-' ciples of this invention and supporting crossed reintorc ng bars or rods and dowel bars in position at different elevations above the sub-grade. 7

Figure 2 is a vertical 7 sectional View taken on line I III of Fig'ure'l. v t Figure 3 is a rear elevational view taken on line III III of Figure 1 and illustrat ing an improved bar support embodying the pr nciples of his, nvention andshow n'gt reinforcing rods p' ed'p s i na Figure e s at p plan vi w' h he eunport "iflustratingthe reinforcingjrods and the dowel bar in dotted line. Figure 5 is a side elevation of the'bar supp twi h the r o ng rod it ed a l t atin the dot e ine esng pos t on if h o l ba re a n fi er;

Figure dis a front eleva tionof by upp ove ng. a m d arr n ement a the upp end o th ba upper- 1 f r h r p n f cenee einf r n r d or a rod mesh wherein'the wedge members are engaged o ly -hi 1QW m9 Q f .1? mesh to holdthe sametinseated position.

and the fdowel bar in sup- As shown onthe drawing: v

h ref en m r 'lind wt th e grade of a concrete road with the upper strata or body of concrete which requires reinforcing being omitted. The road reinforcing mesh or screen for reinforcing the upper section of the concrete comprises a plurality of crossed bars or

rods

2 and 3 and a plurality of dowel bars or rods adapted V to be positioned transversely of the road and adapted to be supported at an elevation below the elevation of the reinforcingrbars or

rods

2 and 3. The reinforcing rods 2 are positioned transversely oftheroad and are located beneath the reinforcing rods 3 which run longitudinally of the road and are free from attachment to the reinforcing rods 2.

Thereinforcing

rods

2 and 3 cross one another without being fastenedtogether and are adapted to be supported by means of improved bar supports positioned at spaced intervals on the road sub-grade similar to the arrangement illustrated in Figure 1.

' Each ofthe improved bar supports is of unitary construction and is adapted to be formed from a single strip of sheet metal.

The improved bar or rod support is adapted to becut or stamped froma sheet of metal with'the sections of the sheet metal which is to be bent into shape to form the bar support having a plurality of apertures or openings 5and 6 provided therein to lighten the weight of the bar support. Thesection of sheet metal forming the blank from which the bar support is to be formed, also has cut or stamped from themiddle sections thereof an inverted heart-shaped opening 7 which forms a finger or latch tongue 8. The lower end of the bar support blank is slotted or cut inwardly a short distance while the upper end, of the blank is cut out to afford a pair of arms or lugs 9 having slots or apertures 10 therein. The two apertured arms 9 are separated by a notch 11 which provides an upper pocket or recess for receiving the upper reinforcing rods 3. Formed on each side of the upper portion of the blank is a 4 rounded recess or pocket 12.

In a blank cut out or 'stamped from a sheet of material in the form hereinbefore described, the-aperturedor slotted blank is adapted to be folded into shape to provide the improved bar support. The blank is folded longitudinallyalong a central line to position the folds or flanges 13 at substan tially right angles to eachother after which the two sections at the lower end of the blank are bent outwardly at right angles to the respective walls or flanges 13 to provide feet or stand plates 14. The heart-shaped aperture? provided in the blank affords an inclined pocket or seat for the reception of a dowel bar 1 and the finger or lug 8 formed by the heart-shaped opening 7 is adapted to be bent inwardly into the dotted line position illustrated in Figure 5 around the dowel bar 4 to hold the same. locked in seatedengagement with the bar support. When the blank is folded as described, the two apertured lugs or arms 9 are positioned at substantially right angles with respect to one another and the two pockets or recesses 12 provided in the upper end of the walls 13 of the bar support afford seats for the lower reinforcing rods 2 as illustrated in Figure 3. The notches 12 are positioned lower than the notch 11 so that the crossed reinforcing

rods

2 and 3 are adapted to be held locked in position in the upper end of the bar support by means of a wedge 15 which is projected throughthe slots or apertures 10 above the upper reinforcing rod or bar 3 to wedgingly hold the crossed rods or bars locked in place.

Figure 6 illustrates a modified form of rod and dowel'bar' support which is also of unitary construction formed from sheet metal and of substantially the same construction as the-bar support illustrated in Figures 3 and 5 with the exception that the upper end of the bar support is provided with a deep central recess 'or pocket 16 and two side recesses or pockets 17 which are at a higher elevation than the intermediate pocket 16 to afford an arrangement whereby connected cross members forming a part of the rod re inforcing mesh are adapted to be seated in the upper end of the bar support with the lowermost rod or bar 18 seated in the intermediate recess or pocket 16 while the upper reinforcing baror rod 19 is seatedin the up per' recesses or pockets 17 thereby affording an arrangement permitting the wedge mem- 7 ber 15 to be inserted through the slotsor apl ertures 10 in the arms or lugs 9 with the wedge member seated upon the lowerrod or bar 18 to wedgingly hold the cross bars of the reinforcing mesh locked in a seated position since the cross bars are rigidly conne-cted one to the other by means of a rivet or by brazing or welding the same together.

A plurality of the improved bar supports are adapted to be positioned at spaced intervals upon the road subgrade 1 as, for example, according to the arrangement illustrated in Figure 1,' and the dowel bars 4 are adapted to be seated in the pockets 7 transversely of the road after which the fingers or retaining lugs 8 forming a part of the support are adapted to be bent over into the dotted line positionillustrated in Figure 5 to hold the dowel bars locked in position.

After the dowel bars have been supported 'in position above the sub-grade, the transverse reinforcing rods or bars 2 are adapted to be seated in the pockets or notches 12 of transversely aligned bar supports, after which the longitudinally positioned reinforcing rods, or bars 3 are adapted to be seated upon the transverse reinforcing rods 2v seated in the upper intermediate notches 11: of the bar'supports. After the upper reinforcing rods or

bars

2 and 3 areengaged in theseries of bar supports positioned upon the road subgrade, the wedge members 15 are adapted to be engaged through the slots 10 of the bar support arms 9 with the wedges resting upon the upper reinforcing rods 3 as illustrated in Figure 3, thereby wedgingly holding or lOCling the crossed reinforc ng bars or rods in proper position at a desired elevation above the road sub-grade.

After the reinforcing rods and the dowel bars have been supported in position upon the improved support as described, concrete is adapted to be poured over the sub-grade to embed the reinforcingrods and the dowel bars in addition to the supports to form the upper concrete section of the road. The concrete when poured is adapted to fill the openings and recesses provided in the bar sup ports and is also adapted to seat upon the feet or plates 14 to properly hold the bar supports in place on the sub-grade.

When a heavy wire reinforcing mesh or connected reinforcing rods are to be used similar to the arrangement illustrated in Figure 6, the dowel bars 4 are so supported in the pockets 7 of the supports after which the reinforcing mesh formed by the connected rods 18 and 19 is seated in the pockets or re cesses 16 and 17. The wedge members 15 are next engaged through the slots of the arms 9 with the wedges seating wedgingly against the lower reinforcing rods or'members 18to hold the mesh locked in position seated upon the bar supports. p

WVhile the bar supports have been described as being arranged to afford seats or pocketsfor I both reinforcing rods and dowel bars, it will of course be understood that the bar supports may be used for supporting the reinforcing rods only or, in certain cases, for supporting the dowel bars only.

The improved bar supports as described are constructed of light weight sheet metal bent into form to form rigid bar supporting constructions with which the wedge members are adapted to be associated for locking the reinforcing cross rods in position on the upper end of the bar support.

It will of course changes may be made-and numerous details of construction may be Varied through a wide range without departing from the principles of this invention, and it is therefore not he purpose to limit the patent granted hereon otherwise than necessitated the appended claims.

I claim as my invention: 1. A bar support comprising a pair of apertured walls integrally connected and positioned at an angle with respect to one another, feet integrally formed on the lower Y ends of said walls, said walls cut out to'form Y a dowel bar pocket, a retaining finger formed by said dowel bar pocket adapted to be bent to hold a dowel bar locked in said pocket, a slot be understood that many by the scope of.

"ends thereof, a retaining ted-arm integrally formed on the upper end of each of said-walls and separated by means of anintermediate pocket and having side re- 7 cesses or pockets positioned to theoutside thereof for the receptionofcrossed reinforcby means of a wedge member engaged through the slotted arms. r 3 2A reinforcing mesh and dowel bar sup port comprising a sheetmetal aperturedbody section bentto provide two walls positioned 7 i-ng rods adapted to be held locked in position at an angle with respect to one another with saidbody-sections having a dowel bar supporting pocket formed at the bend of the body portion, supporting feet integrally "formed on the lower end of the body portion,

and slotted arms integrally formed on the upper end of the body section and positioned at an angle with respect to. one another, said body section having the upper end thereof provided with a plurality of pockets post tioned to the outside and between said arms for the receptlon of crossed reinforceing rods, and a wedge member removably engaged through the slotted arms for locking the rearms for the reception of crossed'reinforcin'g I bars, and a wedge meniberadapted tobe engaged through the slotted arms in engagement with one of said crossed reinforcing 'barsto hold the bars locked" in position on the bar support.

' 4. A bar support'of 'the class described comprising an apertured angle body section;

feet integrally formed on the lower endthereof, said body section having a pocket formed therein in the line of bend of the body section to receive a dowel bar, a retaining finger integrally formed on the body section'and adapted'tobe bent to engage the dowel bar to hold'the's'aine seated in position, slotted'arms integrally formed on the upperendof the body section andafi'ordinga pluralityof recesses at different elevations for the recep E iJlOIl'Of'CIOSSQCl reinforcingmembers, and a wedge device 'removably engaged through the slotted arms for holding the reinforcing members wedgingly locked in position supportedon the upper end of the bar support- 5. A bar support-comprising an angled aperturecl body section havinga dowel bar supporting pocket, formed intermediate, the

formed on the bodysection for-holding the dowel 'b'ar lockedin saidpocket, said body section having the upper end thereof cutto provide a plurality of bar. receiving pockets and-a'plurality of-slotted arms, said pockets opening through the upper edge of the body finger integrally section and positioned toreceive crossed reinforcing bars seated therein, and means engaging through said slotted arms for holding the'orossed reinforcing bars locked seated in the upper end of the body section.

6. A bar support of the class comprising an apertured angledbody section,

" feet integrally formed onthe lower end thereof, said body section having the upper end thereof cut to provide a plurality of bar supporting pockets and separated by a pair of apertured arms, said pockets arranged to receive crossed IGlllfOI'ClIlg bars seated thereln,

and a Wedge member engaged through the apertured arms and contacting one of said crossed reinforcing bars to hold the bars locked in seated position.

7 A bar supportv of the class described comprising an angled body section, feet integrally formed on the lower end thereof, apertured arms integrally formed on the upper endofthe body section, said body section having a rod receiving pocket provided there- I slotted arms for wedgingly holding a pair of in between said arm and a pair of rod receiving pockets formed thereinto the outslde of said arms, said pockets arranged for the reception of crossed reinforcing member's, and A a Wedge member adapted to be removably engaged through the apertured arms to hold the crossed reinforcing members seated in locked position upon, the upper end ofthe bar support.

8. A bar support comprising a'sheet metal .angled bodysection having a dowel bar receiving pocket formed therein intermediate the ends thereof, a retaining member in- 7' tegrallyformed on said body section adapted to be bent into looking engagement Withthe I dowel bar after same isseated insaid pocket, feet formed on the lower end of sa d body section to support the bar support in position,

7 said body section having a plurality of reinforcing bars supporting apertures provlded therein, a pair of slotted arms integrally formed on the upper end of said body section separating said bar supporting pockets, and a Wedge member removably engaged in said crossed reinforcing bars seated in said upper pockets.

9. A barsupport of the class described comprising a pair of integrally. connected Wallspositioned at an angle with respect to one another andarms integrally formed on the upper edges thereof and separated by a rod supporting pocket, said Wallshaving the upper edges thereof out out to provide rod supporting pockets for a rod positioned at right angles to the rod seated in the pocket provided between said slotted arms.

. In testimony whereof Ihave hereunto subscribed my name at Chicago, Cook County, I Illinois.

ROBERT "R; ROBERTSON.

described