Composite railroad tie

Details Composite railroad tie Composite railroad tie

1976-10-06

1978-08-08

Hoffman, Drayton E.

Railways: surface track

Ties

Forms

238 37, 238 84, 428528, E01B 302

Patent

active

041051599

ABSTRACT:
A composite railroad tie of structurally distinct components adhesively joined in layers to form a unit. At least one of the components being of high density phenolformaldehyde bonded particleboard manufactured in a platen press with heat. At least two elements disposed close to and parallel the broad surfaces are composed of lumber with grain direction oriented parallel the long axis. A remaining centermost element, affixed to the above two lumber elements, is relatively non-critical, being selected from lumber or particleboard of adequate shear and compressive strength on the basis of availability, cost, ease of treatment with preservative, etc.

REFERENCES:
patent: 598127 (1898-02-01), Williams
patent: 875856 (1908-01-01), Schuman
patent: 2257833 (1941-10-01), Baseler et al.
patent: 3308013 (1967-03-01), Bryant
patent: 3463746 (1969-08-01), Murdock et al.
patent: 3598312 (1971-08-01), Hamilton, Jr.
patent: 3869326 (1975-03-01), Matzke
patent: 3908902 (1975-09-01), Collins et al.
patent: 3927235 (1975-12-01), Chow

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