Active railroad spike and tie plate interconnection therefor

Details Active railroad spike and tie plate interconnection therefor Active railroad spike and tie plate interconnection therefor

1989-03-10

1991-06-18

Graham, Matthew C.

Railways: surface track

Fastenings

Spikes

238187, 238295, 238377, E01B 1300

Patent

active

050243810

ABSTRACT:
A rail spike for holding a tie plate on a tie, embodied in accordance with the invention so that tie cutting is prevented, spike removal for track maintenance is facilitated, and a free rail load wave is allowed. This preferably is attained by providing the spike with left and right side tapered shoulders and a tapered rear surface, such that a unique wedging and swaging action occurs in the tie plate hole during a final driving of the spike, limiting the depth of penetration of the spike into the tie and securely maintaining the gauge of the tie plate on the tie.

REFERENCES:
patent: 161975 (1875-04-01), Marshall
patent: 1387689 (1921-08-01), Chicoine
patent: 1407678 (1922-02-01), Roussel
patent: 1899264 (1933-02-01), Faries
patent: 2650032 (1953-08-01), Godfrey
patent: 2690305 (1954-09-01), McComb
patent: 2777642 (1957-01-01), Spencer

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