Non-metallic-reinforced molded crosstie

Details Non-metallic-reinforced molded crosstie Non-metallic-reinforced molded crosstie

1976-03-01

1978-08-22

Hoffman, Drayton E.

Railways: surface track

Ties

Nonmetallic

238 84, E01B 344

Patent

active

041083776

ABSTRACT:
A reinforced railroad crosstie formed by molding and bonding comminuted lignocellulosic material into a monolithic beam around a plurality of wooden reinforcing members which have relatively clear and straight grain, a high modulus of rupture and a high modulus of elasticity and are able to withstand a high amount of compression without crushing. The reinforcing members are positioned within the crosstie proximate lines of maximum tensile stresses expected to be induced in the tie by different bending influences caused by passing trains and varying conditions of the underlying ballast. The members are also positioned within the crosstie so as to avoid interference with the spikes employed to fasten the rail to the tie.

REFERENCES:
patent: 2082399 (1937-06-01), Isman et al.
patent: 2128530 (1938-08-01), Hadley
patent: 2847733 (1958-08-01), Roy
patent: 3054706 (1962-09-01), Glaubert
patent: 3096297 (1963-07-01), Peterkin
patent: 3309444 (1967-03-01), Schueler
patent: 3908902 (1975-09-01), Collins et al.
patent: 3928693 (1975-12-01), Rudloff

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