Railways: surface track – Fastenings – Clamps
Patent
1980-07-31
1984-01-10
Stoner, Jr., Bruce H.
Railways: surface track
Fastenings
Clamps
238351, 238354, 238361, E01B 934, E01B 948, E01B 2924
Patent
active
044249357
ABSTRACT:
A resilient rail fastener having a clip having a lower leg with a toe at one end and a heel at the other, an upstanding back portion between the heel and an upper leg, and a rectangular locating aperture in at least one of its legs which engages over a rectangular retaining block. The retaining block has pressure imparting means projecting from each side and bearing downwardly on the upper leg of the clip and thereby applies a downward pressure at each end of the lower leg. One end of the lower leg bears downwardly on the rail support and the other end on the rail to impart a toe pressure. The reduced cross-sectional area of the clip where it passes over the retaining block causes high stresses in the legs of the clip as well as at the locality of the clip heel, and the upstanding back portion has less stress than a hairpin clip, and this results in a lower spring rate for the toe clip so that toe pressure is retained upon rail settlement, and stress corrosion is reduced.
REFERENCES:
patent: 1422340 (1922-07-01), Cooper et al.
patent: 1839725 (1932-01-01), Armstrong
patent: 1976069 (1934-10-01), Hartman
patent: 1998043 (1935-04-01), Boyd et al.
patent: 2203624 (1940-06-01), Clarkson
patent: 2324134 (1943-07-01), Chidester
patent: 2480388 (1949-08-01), Sonneville
patent: 2535337 (1950-12-01), Wertz
patent: 3550851 (1970-12-01), Sonneville
patent: 3831842 (1974-08-01), Tamura
patent: 4254909 (1981-03-01), Rex
Clark Jack
Diener Leslie J.
Langman William F.
Beltran Howard
Omark Industries, Inc.
Stoner Jr. Bruce H.
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