US2149467A

US2149467A - Center joint

Info

Publication number: US2149467A
Application number: US136725A
Authority: US
Inventors: Robert R Robertson
Original assignee: TRANSLODE JOINT Co
Current assignee: TRANSLODE JOINT Co
Priority date: 1937-04-14
Filing date: 1937-04-14
Publication date: 1939-03-07
Anticipated expiration: 1956-03-07

Description

AMarch 7,. 1939. R. R, ROBERTSON CENTER JOINT Filed April 14, 1957 ROBERT RI RDRTSON Patented Mar. 7, 1939 UNITED STATES` PATENT OFFICE CENTER JOINT Application April 14, 1937, Serial No. 136,725

5 Claims.

This invention relates to a road center joint and more particularly, to a sealed longitudinal center joint provided with load transmitting means. The improved joint is so constructed,

5 that upper and lower plate sections are rigidly disposed on opposite sides of a transverse seal plate, which is grooved to reinforce the same and which, furthermore, has the marginal edges cut away or notched to provide anchoring members,

l which are embedded in the slabs on opposite sides of the center joint for tying the opposite sides of the road together and permitting loads to be transmitted from one side of the road to the other through the seal plate.

It is an object of this invention to provide a simplified form of road center joint wherein an intermediate transverse member is formed to serve as a seal as well as a means for transmitting loads from one side of the joint to the other.

It is also an object of the invention to provide a center joint, wherein joint plate members are positioned in the same' plane on opposite sides of a transverse plate, having anchoring means formed thereon whereby loads applied to one side of the road may be transmitted through the joint to the opposite side of the road.

It is an important object of this invention to provide a road center joint wherein anged members of upper and lower joint plates are welded or otherwise rigidly secured to a transverse reinforced load transmitting plate provided with anchoring means for embedding in the concrete on opposite sides of the joint.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawing.

The invention (in a preferred form) is illustrated in the drawing and hereinafter more fully described.

On the drawing:

Figure 1 is a fragmentary top plan view of a road center joint embodying the principles of this invention.

Figure 2 is a fragmentary side elevation of the joint illustrated in Figure 1.

Figure 3 is an enlarged fragmentary vertical detail section taken through the center joints embedded between the concrete road slabs.

As shown on the drawing:

The improved center joint comprises a joint forming mechanism adapted to be supported upon a road sub-grade l and is then embedded in concrete which forms road slabs 2 and 3 on opposite sides of the joint forming mechanism.

The center joint is constructed of sheet metal and comprises a sheet metal upper plate 4, the lower margin of which is deected outwardly at rightv angles to form a flange 5. Positioned in the plane of the top plate 4 is a bottom: plate 6, the upper margin of which is deected at right 5 angles to provide a ange l. The flanges 5 and 'l of the upper and

lower plates

4 and 6 respectively, as clearly illustrated in Figure 3, project in opposite direction and are rigidly secured by means of welding or the like to opposite sides 10 of a transverse seal plate 8 which projects substantially at right angles to the upper and

lower plates

4 and 6 respectively. As clearly illustrated in Figure 3, the upper and lower plates with the integral flanges thereof form angle members which are reversed and inverted with respect to one another and are secured to the longitudinal middle portion of the seal plate 8 between longitudinally formed reinforcing ribs 9. The longitudinal margins of the seal plate 8 are cut out 20 at I0 to form outwardly projecting anchoring lugs or blades Il, the outer ends of which are wider than the inner ends to provide tapered constructions, whereby the anchoring blades may be rigidly held anchored in the concrete road slabs 2 and 3 of the road.

The transverse plate 8 extends throughout the entire length of the center joint forming unit and serves as a seal between the upper and lower plate members of the joint to prevent moisture and foreign matter, entering the top of the joint, from passing downwardly through the entire joint.V In a similar manner, water and foreign material is prevented from passing upwardly from the bottom of the joint by means of the transverse seal plate 8.

'I'he transverse seal plate 8, being provided with anchoring lugs or blades l l on the margins thereof, serves as a means for tying the slabs on opposite sides of the joints together, so that when 40 loa-ds are applied to either side of the road, the loads are transmitted through the anchoring blades Il and the main body portion of the seal plate 8 to the opposite side of the road.

It will, of course, be understood that various details of construction may be varied through a wide range without departing from the principles of this invention, and it is, therefore, not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.

I claim as my invention:

1. In a center joint for embedding between adjacent concrete road slabs, a joint forming mechanism comprising upper and lower plate sections disposed in substantially the same plane and having supporting flanges integrally formed thereon with the flange of one plate projecting in a direction opposite from the flange on the other plate, a seal plate disposed between the flanges of the upper and lower plates and rigidly secured to said flanges, and anchoring members thereon to be embedded in the concrete on opposite sides of the joint.

2. In a center joint for embedding between adjacent concrete road slabs, a joint forming mechanism comprising a ribbed seal plate embedded in the concrete on opposite sides of the joint, anchoring blades formed on the longitudinal margins of the seal plate and also embedded in the concrete slabs, upper and lower joint plates disposed in the same plane and positioned at substantially right angles to the seal plate, and flanges on the upper and lower joint plates secured to opposite sides of the middle portion of the seal plate between the ribs thereof.

3. A road center joint comprising upper and lower angle plate sections reversed and inverted with respect to one another, a seal plate separating the angle plate sections and rigidly secured thereto, reinforcing ribs provided in the seal plate on opposite sides of the angle plate sections, and anchoring members formed on the longitudinal margins of the seal plate.

4. A road center joint forming mechanism comprising upper and lower plate members, a seal plate disposed at substantially right angles to the upper and lower plate members and separating the same, reinforcing ribs integrally formed on the seal plate on opposite sides of the upper and lower plate members, and anchoring blades integrally formed at spaced intervals on the longitudinal margins of the seal plate.

5. A road center joint comprising a seal plate having reinforcing ribs formed longitudinally thereon, said seal plate having the margins thereof cut away to leave anchoring blades, main joint plates disposed on opposite sides of the seal plate and provided with mounting flanges rigidly secured to the seal plate between the reinforcing ribs.

ROBERT R. ROBERTSON.