Edge-shaping tool for forming surface of wet concrete in regions

Details Edge-shaping tool for forming surface of wet concrete in regions Edge-shaping tool for forming surface of wet concrete in regions

1979-11-09

1981-11-10

Byers, Jr., Nile C.

Road structure, process, or apparatus

Apparatus

With means for profile shaping, e.g., crown

151055, E01C 1922

Patent

active

042995132

ABSTRACT:
The tool consists of a pair of forming blades made of stainless steel held at a slight dihedral angle of 10.degree., with a gap between them wide enough to accommodate the surface of an expansion joint or drain. The blades are rigidly held by a cast aluminum bridge which arches over the gap. A pair of rubber wipers project slightly into the gap for clearing wet concrete from the surface of the expansion joint. The wipers are removably supported in aluminum wiper holders. Compressive spring force is generated by a steel rod extending between the blocks and through the arch of the bridge. Removal of a spacer on the steel rod permits sliding the wiper assembly aside sufficiently to release it from the tool to permit changing rubber wipers. A small amount of adjustment of the gap width to accommodate different width joints is permitted by means of movement of the blades in slotted openings in the bridge. Larger variations can be accommodated by substituting differently dimensioned blades.

REFERENCES:
patent: 1193478 (1916-08-01), Downs
patent: 1273060 (1918-07-01), Hoff
patent: 1585571 (1926-05-01), Swanson
patent: 1899183 (1933-02-01), Cruz
patent: 3758909 (1973-09-01), Granger
patent: 3936210 (1976-02-01), Oehlerking

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