US1982714A

US1982714A - Road chair

Info

Publication number: US1982714A
Application number: US507656A
Authority: US
Inventors: William E White
Original assignee: KALMAN STEEL CO
Current assignee: KALMAN STEEL CO
Priority date: 1931-01-09
Filing date: 1931-01-09
Publication date: 1934-12-04
Anticipated expiration: 1951-12-04

Description

W. E. WHITE Dec. 4, 1934.

ROAD CHAIR 2 Sheets-Sheet 1 Filed Jan. 9, 1931 vii/Q6 Dec. 4, 1934. w. E. WHITE 1,982,714

ROAD CHAIR Filed Jan. 9, 1931 2 Sheets-Sheet 2 Patented Dec. 4, 1934 ROAD CHAIR William E. White, Chicago, Ill., assignorto Kalman Steel Company, Chicago, Ill., a corpora tion of Delaware Application January 9,

6 Claims.

My invention relates to an accessory for road building and particularly to a novel support for the reinforcing bars used in pavements.

In concrete pavements as now designed, the outer edge is reinforced with one or more bars extending longitudinally and embedded in the concrete approximately six inches from the side edge. The problem of supporting the bars in the correct position prior to and during the pouring of the concrete has heretofore remainedunsolved. To insure stability in structures used for that purpose, the common expedient has been adapted of providing a prong intended to be drivon into the soil, but the variability of soils from soft sand to hard clay renders such supports uncertain. Other objections include instability un-.

der the impact of the mass of poured concrete, cost of construction, impediment to flow of concrete, and labor of installing. These objections have been overcome in the structure here disclosed. The invention will be more readily understood by reference to the accompanying drawings, in which:

Fig. 1 is a view of a blank, showing the die op: eration necessary to produce two, duplicate chairs;

Fig. 2 is a perspective view of a completed chair;

Fig. 3 is a sectional view of. a side form and bar showing the relation of the chair thereto; and

Figs. 4' and 5 are perspective views of slightly modified forms of the chair shown in Fig. 2.

A chair such as contemplated is installed in the position shown in Fig. 3, the letter A indicating the form used to define the lateral edge of the pave ment, While the reinforcing bar is indicated at B. The chair C is of novel form and is constructed by the simple operations that will now be described.

In Fig. 1, I have shown a fiat rectangular section of metal adapted to be acted upon by a cutting die and severed along the full lines shown in that figure. This results in waste of the cut-out parts indicated by.the letter X and the production of two complete, identical blanks. This may be clearly seen by inverting the drawing containing Fig. 1.

After the die operation, the blanks are bent along the dotted lines 10, 11 of Fig. l and ribbed as at 12, 13, 14 of Fig.2, thus producing the finished article shown in that view.

This article comprises a relatively broad flat base 15, the base including the portion 16 that normally occupieda portion of the space beneath the narrow brace 17. Thus the structure is stable having base portions on both sides of the stand- 1931, Serial No. 507,656

ard or post 18. The standard has a seat 19 in its upper end for the 'bar B and is reinforced by the "angular flange 20 thatextends vertically along the outer edge. The flange is continued upwardly beyond the seat to provide a tongue 21 adapted to be hammeredover the bar B, as shown in Fig. 3. The braceextends diagonally downwardly from the upper end of the standard, terminating in a portion 22 having a vertical shoulder 23, the function of which, as best shown in Fig. 3, is to abut the lower edge of the form and provide a certain gauge for spacing the bar from the outer'edge of the pavement. The base is continued laterally beyond the part 22 to provide a portion 24 adapted to be projected beneath the form. Thus when the chair is installed, it is held in position not only by its own stability, but by the weight of the form resting on the base.

The construction of Fig. 4 is the same as that already described, except that I provide a prong 25 at the corner of the standard. In cases where the user insists on some means for anchoring that end of the-chair, such a prong may be easily 1 formed.

The structure of Fig. 5 is likewise identical with that of Fig. 2 except that I provide an additional seat 26 for use where a double row of bars is. required. This seat includes an additional tongue 27 adapted to be bent over a bar as already de scribed.

The stability of the chair is assured regardless of the character of the subsoil, and the operation of placing it in position is quickly performed. The broad, fiat base has the added function of insuring stability during the operation of pouring the concrete. The impact ofthe plastic mass settles the chair firmly into place and the weight of the concrete on the base avoids the possibility of lifting the bar and chair which frequently oc curs if the chair is not securely anchored. The skeleton character of the chair insures the free fiow of concrete and the complete imbedment of the bar. a

The construction of the chairs is such that nesting is possible, a dozen or more being nested and tied for easy handling. The strength of the device is relatively great in proportion to the weight of the material employed and the small amount of waste involved in the forming operation, is a point of advantage in the construction cost. 1

I claim: 1. A road chair consisting of a section of sheet metal having a relatively broad flat base and a perpendicular post provided with a bar seat in 3. A road chair including a flat base and a vertical standard at one end, the upper end of the standard providing a seat for a bar, an integral brace extending from the upper end of the stand1 ard to the opposite end offtheibase, the l'braoe constituting a spacing gauge "for positioning the bar relative to a form. I

4. A road chair including a fiat base and-a vertical standard at one end, the upper endof the standard providing a seat for a bar, an in- :tegrala brace extending-from the upper-endorthe standard to the opposite end of the base, the .-:bra=ce constituting ,a spacing ggauge tor positioning the bar relative to a form, said base having a portion extending beyond said brace and adapted to underlie a form.

5. A road chair formed from a single section of sheet metal without connecting operations, comprising a flat base, a standard rising from the base said standard havingan angular. side flange theupper end of whichprovides a'bar-holding tongue, and a narrow brace in the plane of the metal "of the standard, extending diagonally from the upper end of the standard to the base.

6. A road chair formed from a single section of sheet metal without connecting operations, comprising avflat base, a standard rising from the 'basersaid standard having an angular side flange the upper end of which provides a bar-holding tongue, and a narrow brace in the plane of the metal of the standard, extending diagonally from the upper end of the standard to the base, the metal originally in the space beneath the brace remaining as a part of thebase.

WILLIAM WHITE.