US 4,230,209 AGranted

Means of stringing trolley wires

AssigneesJapanese National Railways, Sumitomo Electric Industries, Ltd., Hitachi Cable, Ltd.

InventorsYasushi Ohura, Susumu Ohwada, Akira Nakamura, Mitsuo Kitanishi, Yakuharu Nakamura, Akio Tamura

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Abstract

Means of stringing trolley wires comprises a supporting portion, resilient portions and a sliding portion. The supporting portion comprises a box member having an opening at the bottom thereof, and each of the resilient portions comprises a spring member and a supporting rod which protrudes through the opening of the box member and is adapted to move and incline in compliance with the condition of the sliding portion while the sliding portion comprises a pair of long ears and long trolley wires clamped by the pair of the long ears. The long ears of the sliding portion are supported at predetermined intervals by a plurality of the supporting rods of the resilient portions.

Claims5

Dependent claims

Means of stringing trolley wires in a railway tunnel comprising

a supporting portion fixedly installed at the inner surface of the railway tunnel, said supporting portion comprising a long box member having an opening formed at the bottom thereof,
resilient portions supported at predetermined intervals by said supporting portion, each of said resilient portions comprising a spring member and supporting rod which is protruded through said opening of said box member and adapted to move longitudinally and incline in compliance with the condition of the trolley wires, and
a sliding portion supported by said resilient portions, said sliding portion comprising a pair of long ears each having a lengthwise rigid structure and rotatively supported by said supporting rods and long trolley wires each clamped by said pair of said long ears to provide the sliding surface of said trolley wires with a lengthwise rigid structure.

Dependencies are inferred from the claim text.