Railroad tie

Details Railroad tie Railroad tie

1974-02-07

1976-03-16

Song, Robert R.

Joints and connections

Interfitted members with external bridging piece

403296, 238 37, F16B 2300

Patent

active

039438180

ABSTRACT:
An improved railroad tie member is formed of two wooden half-ties which are secured together with one or more reverse threaded bolts arranged in parallel with the tracks. The bolts are preferably inserted in the tie halves whereby the bolts may be turned to resecure the two halves while the tie assembly is installed in the track.

REFERENCES:
patent: 313193 (1885-03-01), Gaylord
patent: 571042 (1896-11-01), Edquist
patent: 928237 (1909-07-01), Baird
patent: 1001333 (1911-08-01), Andrew
patent: 1047876 (1912-12-01), Andrew
patent: 1251086 (1917-12-01), Morgan
patent: 1610934 (1926-12-01), Delany
patent: 2584723 (1952-02-01), Mackey
patent: 2699182 (1955-01-01), Bladridge, Jr.
patent: 3242553 (1966-03-01), Bodgsten
patent: 3497890 (1970-03-01), Coyle
patent: 3552257 (1971-01-01), Tanabe

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