Fixture for making railroad ties

Details Fixture for making railroad ties Fixture for making railroad ties

1985-05-09

1987-05-19

Woo, Jay H.

Static molds

Uniting preform with molding material

Rail or railway type preform

249 94, 249 97, 249219R, B28B 2300

Patent

active

046661239

ABSTRACT:
The bottom of a concrete sleeper mold is formed with an opening, through which a rail fastening shoulder can be inserted. A pair of rotatable pieces are disposed beneath the mold on the opposite sides of the opening such that they face each other. These rotatable pieces are rotatable upwardly and downwardly. Their ends facing each other are formed with recesses, and they are spring biased by spring members in the circumferential direction of their support pins.

REFERENCES:
patent: 222229 (1879-12-01), Beals et al.
patent: 2669763 (1954-02-01), Unneland
patent: 3471118 (1969-10-01), Bormann et al.
patent: 4204660 (1980-05-01), Feuillade
patent: 4495127 (1985-01-01), Thim

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