Railways – Track layers – Track raising car
Patent
1981-05-07
1983-11-29
Reeves, Robert B.
Railways
Track layers
Track raising car
246170, 324207, E01B 2904, E01B 3500
Patent
active
044175221
ABSTRACT:
A mobile track correction machine, which comprises a vertically adjustable tool carrier guided along the track, track lining and lifting tools on the carrier, hydraulic lining and lifting jacks linking the carrier to the machine frame and a control circuit controlling actuation of the jacks and including a switch operable to terminate actuation of the lifting jack, has a safety arrangement for terminating the actuation on disengagement of the tool carrier from the track. The safety arrangement includes an electronic, inductive proximity fuse affixed to the tool carrier and mounted above, and at a nominal distance from the running face of the rail engageable by a respective lifting tool, the proximity fuse being connected to the switch and capable of transmitting an operating signal thereto without touching the running face when the distance between the proximity fuse and the running face is more than the nominal distance.
REFERENCES:
patent: 1652127 (1927-12-01), Harbert
patent: 2646557 (1953-07-01), Smith
patent: 3146727 (1964-09-01), Plasser et al.
patent: 3943857 (1976-03-01), Theurer
patent: 4001718 (1977-01-01), Wilson et al.
patent: 4046079 (1977-09-01), Theurer
patent: 4248154 (1981-02-01), Theurer
Bock Gernot
Theurer Josef
Franz Plasser Bahnbaumaschinen - Industriegesellschaft m.b.H.
Hajec Donald
Kelman Kurt
Reeves Robert B.
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