US1472107A - Collapsible chair for concrete bars - Google Patents

Description

A a, 1 u m w W E WHITE COLLAPSIBLE CHAIR FOR CONCRETE BARS Flled July 31 1922 Patented Get. 31'), 1%23.

hdi ld l E FI.

\VILLIAM E. WHITE, OF CHICAGO, ILLINOIS.

' COLLAPSIBLE CHAIR FOR CONCRETE BARS.

Application filed July 31,

Be it known that I, VVILLIAM E. VVHirn, a citizen of the United States, and a resident of Chicago, in the county of Coolrand State of Illinois, have invented certain new and useful Improvements in a Collapsible Chair for Concrete Bars, of which the following is a specification.

My invention relates to concrete reinforcement and particularly to a novel chair for use in connection therewith.

It is desirable in placing certain forms of concrete reinforcing elements to utilize so called high chairs or supports by means of which the reinforcing elementsare main tained at a proper height above the forms. Chairs of this description are necessarily of rather large size and of considerable bulk relative to the weight of material. This results in difficulties in shaping and bandling clue to the diiiiculty of nesting the chairs. 1

One of the objects of my invention is to provide a high chair which may be col.- lapsed and therefore which may be packed in a small space and shipped conveniently. To that end I provide suitable elements composed preferably of wire and so arranged that the supporting legs may be spread apart to form a stable structure. In addition I provide means for limiting the spreading movement and means serving as a seat for the reinforcing rods.

The invention will be more readily understood by reference to the accompanying drawings, in which,

Fig. 1 is a side elevation of a chair constructed in accordance with my invention;

Fig. 2 is an end view thereof, the legs being shown in dotted lines in collapsed position;

Fig. 3 is a fragmentary sectional view on the line 3-3 of Fig. 1;

Fig. ei is a fragmentary sectional View on the line i4 of Fig. 1;

Fig. 5 is a side view of a slightly modified form;

Fig. 6 is a sectional view on the line 66 of Fig. 5, and,

Fig. 7 is a sectional view on the line 7--'?' of Fig. 5.

In the drawings, and referring particu larly to Figs. 1 to 4 inclusive, it will be seen that I provide two sections of wire, each bent to provide diagonal legs 10, 11. and an intermediate normally horizontal 1922. Serial no. 578,575;

portion 12, 13. Intermediate the ends of the horizontal portion I deflect a portion of the wire thereby forming projections 1-4, 15, extending downwardly and co-operating with the clip, to be later described, for the purpose of limiting the angular oscillation of the pairs of legs. The clip is composed of sheet metal and comprises a body portion 16, having a central opening through which the deflected portions 14:, 15 extend, and bent portions 17, which overlie the horizontal portions 12, 13, of the wire members and securely retain said horizontal portions in parallelism with capacity for oscillation as permitted by the cooperating stops.

To provide a seat for a reinforcing rod 1- utilize a wire member or staple having legs 18, and a horizontal portion 19, the latter portion lying'between the horizontal portions 12, 13 and being securely clamped p in position by the clip, as best shown in Fig. 3.

If desired the legs 10, 11, may be divided with feet 20, ordinary wood staples, not shown, being utilized for securing the feet to the wood form.

In the construction shown in Figs. 5, 6 and 7 I provide two pairs of legs as heretofore described. The intermediate horizontal portions 21, however, are straight and in order to limit the oscillation of the legs I utilize a clip 22, having lips 23, which are bent around the horizontal portions and secure them, together with the retaining staple 24, in proper relation. In addition I provide integral end portions 25, having laterally inbent flanges 26, suitably spaced and angularly disposed, to act as stops to limit the separation of the legs of the chair. In each of the devices the construction is such that pairs of legs may be moved into parallelism, as shown in dotted lines in Fig. 2, and shipped and handled in this manner. When being installed the legs are pulled apart to the limit of movement, and due to the firm engagement of the clip therewith,

will be retained in the desired position un der all ordinary circumstances.

Obviously the construction may be modified to a material extent, both as to the inolusion of the bar seat and as to the manner of pivoting the pairs of legs for relative oscillation and I do not wish to be limited except as indicated in the appended claims.

I claim: 1. In a chair, the combination of two separate wires bent into generally U-shape, a clip for pivotally joining said bent wires, and means for limiting the pivotal movement of the joined parts.

2. In a chair, the combination of two pairs of legs, the legs of each pair being joined by a normally horizontal portion, and a clip for pivotally clamping together in parallelism the horizontal portions of said pairs of legs.

3. In a chair, the combination of two pairs of legs, the legs of each pair being joined by a normally horizontal portion, a clip for pivotally clamping together in parallelism the horizontal portions of said pairs of legs, and means for limiting the pivotal movement of the legs. v v

4. In a chair, the combination of two pairs of legs, the legs of each pair being joined by a normally horizontal portion, a clip for pivotally clamping together in parallelism the horizontal portions of said pairs of legs, and means carried by the clip for limiting the pivotal movement of the legs.

5. In a collapsible chair, the combi.na-'

tion of two U-shaped members, means for clamping the bases of the U-shaped members together in parallelism with capacity for relative oscillation, and stops for limjjting the extent of oscillation of said memers.

6. In combination, two pairs of U-shaped members each having two legs and a horizontal leg-connecting jportion, aclip for joining said horizontal portions in parallelism, stops on said clip, and means integral with said U-shaped members for engaging said stops and limiting relative angular separation of said members. o

7. In combination, two pairs of U-shaped members eachhaving two legs and a horizontal leg-connecting portion, a clip for joining said horizontal portionsin parallelism, stops on said clip, and means integral with said horizontal portions for engaging said stops and limiting relative an gular separation of said members.

8. In a chair, the combination of two pairs of legs, the legs of each pair being joined by a normally horizontal portion, a clip for pivotally clamping together in parallelism the horizontal portions of said pairs by said clip.

9. In a chair, the combination of two pairs of legs, the legs of each pair being of legs, and aba-r-retaining staple also held 7 joined by a normally horizontal portion, a

clip for pivotally clampingtogether in parallelism the horizontal portions of said pairs of legs, and a separate U-shaped bar-seat also held by said clip. I 7' 7 10. In a chair, the combination of two pairs of legs," the legs of each pair being joined by a normally horizontal portion, a clip for pivotally clamping together in parallelism the horizontal portions of said pairs f of legs, means for limiting the pivotal movement of the legs, and a separate barseat provided with'vertical legs'andheld in a position by said clip.

Signed at Chicago, Illinois, this 12th day of July, 1922.-

WILLIAM E. wrirrn.

Images