System for single draft weighing of cars coupled in motion

Details System for single draft weighing of cars coupled in motion System for single draft weighing of cars coupled in motion

1977-02-16

1978-06-13

Hartary, Joseph W.

Weighing scales

Processes

177 25, 177116, 177163, 177DIG8, 364567, G01G 1904

Patent

active

040943674

ABSTRACT:
A system is provided for weighing railroad cars coupled in motion by providing a first scale and a second scale located forward of the first scale. The railroad cars are moved over the first and second scales, the rear trucks of the railroad cars are weighed on the first scale and the weight is stored. While the rear truck of a railroad car under consideration is on the first scale, the front truck of the railroad car under consideration plus the rear truck of the just preceding railroad car are weighed on the second scale. The weights on the first and second scales are totaled and the stored weight of the rear truck of the just preceding railroad car is subtracted to obtain the full draft weight of the railroad car under consideration.
The railroad car under consideration may be loaded while it is being weighed and in motion. A preload compensating amount is added to the totaled weights on the first and second scales to compensate for the weight of material that will continue through the chute after the chute is closed. A plurality of discrete weighings is performed during loading of the railroad car under consideration. After the loading is terminated, a final weight reading is performed to obtain the full draft weight of the loaded car under consideration. Loading of the railroad car is terminated when either the full draft weight reaches a predetermined amount or when the rear truck of the railroad car under consideration reaches a preselected location on the first scale.

REFERENCES:
patent: 3374844 (1968-03-01), Rogers
patent: 3825734 (1974-07-01), Jacobs
patent: 3842922 (1974-10-01), Fagin
patent: 4036315 (1977-07-01), Flinta

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