US1324360A

US1324360A - Spacer fob

Info

Publication number: US1324360A
Authority: US
Publication date: 1919-12-09
Anticipated expiration: 1936-12-09

Description

G. R. SCHOENTHALER.

SPACER FOR CONCRETE REINFORCING BARS.

APPLICATION FILED APR. M1917.

Patented Dec. 9, 1919.

R. SGHOENTHALEBJ, OF CHICAGO, ILLINOIS.

I Y srncnn ron concanrn-anrnroncine sans.

Application filed April 4. 1.917.

To all whom it may concern Be it known that I GEORGE R. Sononn- 'rHALnn, a citizen of the United States, residing at the city of Chicago, county of Spacers for Concretelteinforcing Bars, of which the followlng 1s a full, clear, and eX- act descrlption, such as will enable others skilled in the art to which it appertains to provision of an improved spacer which possesses a maximum sustaining-power, requires a minimum amount of material in its construction and has specially designed features arranged for cooperation with the supported bars whereby the spacer is maintained upright or in its normal position relative to the-form-work.

Fi ure 1 is a ers ectiveview of a device. embodying one form'of my invention;

Fig. 2 1s a side view of the same; Flg. 3 1S ahsectionalview taken substantially on line 8-3 of Fig. 2;

Fig. i is a perspective detail of a modified form;

Fig. 5 is a side View of asecond modified form; 7

Fig. 6 is an end view of the same;

Fig. 7 is a plan view of a blank showing the manner in which the metal is slotted to form the embodiment illustrated in Figs. 5 and 6.

As will be obvious to one skilled in the art, the device illustrated in these drawings is designed to be employed in supporting reinforcing bars for concrete structures in proper position relative to the form while the reinforcements are being placed and while the concrete is being poured about them. The device is formed of a strip or blank of ductile sheet metal of proper gage to givethe requisite strength and of sufficient rigidity to prevent its being bent or deflected by the weight of the material w rich it is designed to support as well as such other casual stresses as it may be subjected to in installation. The blank is formed with a Specification of Letters Patent.

Cook, and State of Illinois, have invented a certain new and useful Improvement in Patented Dec. 9, 1919.

Serial no. 158,691.

plurality of transverse slots extending partway its width so as to provide strut members 1 which are conjoined by an integral body portion 2. The strut members 1 are deflected some to one side and some to the other side of the plane in which they originally lay, in which plane the body portion 2 is left, so that some of the strut members I extend angularly to one side of the body portion 2 and some to the other side. The outer extremities of the strut members 1 are adapted to engage a suitable supporting surface, such as the surface of the form-work so that the strut members may act cooperatively to support the body portion 2 at a distanceabove or away from the supporting surface. The body portion 2 is designed to support the reinforcing bars which are laid transversely of the device, which function it may perform effectively by virtue of the fact that it lies with its maximum dimension in the line of the moments occasioned by the weight of the supported bars. For the accommodation of the bars, and for the pro vision of the staying means about to be described, the body portion is slotted transversely from its outer edge across a portion of its width only, and the portions of the metal between juxtaposed slots are deflected laterally to positions substantially perpendicular to the body portion to provide the stay members 4. Some of the stay members are deflected to one side of the body portion and some to the other so that collectively they project at opposite sides thereof. Due to the inherent rigidity of the material. the stay members i are quite stifi, so as to require a force in excess of that to which they will be subjected in the normal use of the device, to change their angularity relative to the body portion. Although not necessary, it is desirable for the strength of the device that the stay members t be formed each opposite a strut member 1 as distinguished from intermediate the strut members; As will be at once apparent from Fig. i, this form of the metal provides suitable spaced slot-s in'the body portion for the reception of the supported bars. The parts of the body portion intermediate said slot-s form spacers for retaining the bars at the proper distances apart. and the stay members at have contact. with the bars disposed in these slots. Inasmuch as the stay members i extend to opposite sides of the body portion andhave contact with the supportbalance relative to the form and the bars.

Of course, any suitable attaching means, such as the ductile members 5, may be provided adjacent the bar-receiving slots for securing the bars to the spacer.

In Fig. l is illustrated a form in which the invention may be embodied and in which immediately juxtaposed portions of the metal are deflected in opposite directions to form the stay members 4. In this arrangement the immediately adjacent stay members may cooperate with the same bar.

In Figs. 5, 6 and 7, I have shown an arrangement whereby the ductile retaining members 5 may be formed integral 011 the device. In this form, as seen in Fig. 7, the metal is slit longitudinally, as at 6, for a portion of the distance between the transversely slotted portion at the outer extremity of the body portion, the said transverse slots being spaced to a greater distance, apart. When the stay portions 4 are deflected laterally, the portion detached by the longitudinal slits 6 is also turned laterally, and forms a ductile finger immediately contiguous the stay member and adapted to be bent about a bar resting thereon.

From the foregoing description of my i11- vention, it will be seen that it provides a spacer having the desirable qualities of extreme economy and great strength, and which is so constructed as to obviate its tip ping when in engagement with the supported structure. At the same time, the

outer extremities to maintain the construction of the device is such that there are no arched-over portions such as would tend to obstruct the flow of the plastic concrete mixture into engagement with all sides of the device and the bars, and thereby contribute to the formation of voids or pockets in the concrete.

I am aware that the invention is susceptible of embodiment in forms difi'ering in various particulars from those herein illustrated and described, and it is my intention that the letter be taken as simply illustrative, and the claims as comprehensive of the true spirit and scope of the invention.

What I claim is:

As a new article of manufacture, aspacer formed of a strip of sheet metal and having a longitudinally continuous body portion, leg members along one margin of the body portion extending obliquely to opposite sides of the plane thereof, comparatively rigid stay members formed adjacent the other margin of the body portion and extending in opposite directions from the plane thereof, and portions of the metal intermediate the stay members forming interspacers; the leg members being adapted to contact with a supporting surface at their device thereon, the stay members being adapted to contact with supported bars on opposite sides of the body portion to hold the device against'tipping relative to the bars, and the interspacers being adapted to engage bars to retain them against movement longitudinally of the device.

In testimony whereof I hereunto ailix my signature in the presence of two witnesses, this 31st day of March, 1917. I

GEORGE R. SCHOENTI-IALER.