Apparatus for bending concrete curbing

Details Apparatus for bending concrete curbing Apparatus for bending concrete curbing

1978-03-27

1980-04-22

Derrington, James H.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

264295, 425403, B28B 1100

Patent

active

041993128

ABSTRACT:
Apparatus for initially bending pairs of spaced parallel concrete curbing immediately after it has been cast and while still in a zero slump state. The apparatus includes a blade-like tool adapted to extend into the V-shaped space which normally exists between opposed pairs of concrete curbing when the latter emerge from curb molding apparatus, said tool including opposed sidewalls which may be flexibly bent or distorted away from each other at pre-selected portions along the longitudinal extent of such tool so as to simultaneously and oppositely bend said curbing pair. Means for distorting the flexible sidewalls of the tool are provided in the form of rollers adapted to contact interior portions of the sidewalls and be forced downwardly with respect thereto, thereby increasing the distance between the sidewalls at such preselected locations.

REFERENCES:
patent: 1691672 (1928-11-01), Riddell
patent: 3932093 (1976-01-01), Maier
patent: 3941545 (1976-03-01), Beretta et al.
patent: 4015923 (1977-04-01), Jarvinen et al.

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