Interchangeable insert for railroad switches

Details Interchangeable insert for railroad switches Interchangeable insert for railroad switches

1993-01-05

1994-04-19

Huppert, Michael S.

Railway switches and signals

Switches

Point

246437, E01B 702

Patent

active

053038843

ABSTRACT:
The invention relates to a manganese steel insert to a railroad track switch point of the type designed to have a planar coupling system within both the web of the rail and the switch point of the insert, instead of the conventional curved coupling surface in use at the present. This is achieved by means of an attachment of the same material as the insert (or other steel) on the insert contact surfaces, thus achieving precision plane surfaces during the machining phase.

REFERENCES:
patent: 702113 (1902-06-01), Palmer
patent: 951205 (1910-03-01), Strong
patent: 1005209 (1911-10-01), Henderson
patent: 1033400 (1912-07-01), Hoffmann
patent: 1334466 (1920-03-01), Mitchell
patent: 1811620 (1931-06-01), Einstein et al.
patent: 1829439 (1931-10-01), Enstrom
American Railway Engineering Association, "Manganese Steel Points for Split Switches" Trackwork Plan No. 220.52, date unknown, but before 1990.

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