Apparatus for forming keyway joints

Details Apparatus for forming keyway joints Apparatus for forming keyway joints

1977-10-13

1979-01-30

Byers, Jr., Nile C.

Road structure, process, or apparatus

Apparatus

Means to install or form joint

404100, E01C 2302

Patent

active

041369939

ABSTRACT:
An apparatus for continuously forming and positioning a keyway joint is removably coupled to the front end of a slip-form paving machine. A supply roll of key strip stock is mounted on the apparatus and the strip is guided to successive arrangements of forming rollers for shaping the strip into a desired form. An automatic punch mechanism is provided for pucnhing holes in the strip liner and an automatic tie bar mechanism is also associated with the apparatus for automatically placing tie bars into these holes. Because it is difficult to assure that such tie bars are properly placed in the holes and since an improperly positioned tie bar can cause serious damage to the keyway and pavement already laid, a mechanism is provided for shutting down the paving machine if such tie bars are not properly placed.

REFERENCES:
patent: 3269282 (1966-08-01), Beesley
patent: 3491661 (1970-01-01), Hudis
patent: 3530776 (1970-09-01), Hudis
patent: 3876323 (1975-04-01), Williams

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