Railways – Suspended – Double inner rail
Patent
1980-02-28
1982-12-07
Bertsch, Richard A.
Railways
Suspended
Double inner rail
104243, B61B 300, E01B 502
Patent
active
043621082
ABSTRACT:
A conveyor system is composed of a trolley and an elongated inverted U-shaped or C-shaped track which is formed without any machining involving removal of material by simple deformation of a sheet-metal blank. The track has a horizontal or vertical web, two vertical or horizontal legs extending from the marginal portions of the web, and two horizontal or vertical ledges which constitute the inwardly bent end portions of the legs. One of the ledges has a V-shaped cross-sectional outline and the other ledge has an inturned carrier for a toothed rack in mesh with a pinion driven by a motor on the trolley. The trolley has a first pair of rollers whose conical peripheral surfaces engage the opposite sides of the V-shaped ledge, and a second pair of rollers whose cylindrical peripheral surfaces engage the opposite sides of the other ledge. One roller of each pair is adjustable to ensure that both rollers of each pair engage the corresponding ledge with negligible clearance. The V-shaped portion of the one ledge can receive a steel rod which reinforces the track and is engaged by one roller of the respective pair of rollers.
REFERENCES:
patent: 2972965 (1961-02-01), Sjostrom
patent: 3854406 (1974-12-01), Monne
patent: 4125908 (1978-11-01), Vail et al.
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