Advancing of apparatus for refurbishing overhead structures

Details Advancing of apparatus for refurbishing overhead structures Advancing of apparatus for refurbishing overhead structures

1981-10-16

1984-06-19

Reeves, Robert B.

Railways

Trolley transfer

Overhead crane

104107, 105154, 182 37, 198485, 212209, B61F 1300, B66C 902, E01B 2600

Patent

active

044548184

ABSTRACT:
A coupling trolley is provided for a rail or runway beam that is longitudinally translatable relative to a member located above and extending transversely of the rail or runway beam. The trolley has rollers to engage and support the rail or runway beam via upper flanging thereof, and has first and second supporting engagers for the member, specifically lower flanging thereof. The trolley is movable with the rail or runway beam and relative thereto. When the trolley is stopped by its first engager reaching said member as the rail or runway beam is advanced with the trolley, the second engager of the trolley is movable by the end of the rail or runway beam, from non-engagement towards and into securing engagement with the member where it is held by cooperation with the upper surface of the rail or runway beam.

REFERENCES:
patent: 1929325 (1933-10-01), Masterson
patent: 2416352 (1947-02-01), Seward
patent: 2905806 (1959-09-01), Tunney
patent: 2925240 (1960-02-01), Laviolette
patent: 3468264 (1969-09-01), Horompo
patent: 4201275 (1980-05-01), Sinclair et al.

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