Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1976-07-12
1977-09-20
Swisher, S. Clement
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
G01G 2300
Patent
active
040488438
ABSTRACT:
A scale testing vehicle for use on platform scales, having at least one scale section, is disclosed. The scale testing vehicle includes a chassis which mounts front and rear axle assemblies. A weight bed is mounted on the chassis together with a crane. The weight bed receives a plurality of uniform weight units which may be removed and replaced by the crane from their location on the bed. A pair of lifting cylinders are mounted immediately adjacent and forward the wheels of the rear axle assembly. After the vehicle is driven onto a scale section, the cylinder lifting legs are extended wherein the front of the vehicle is elevated and the entire static load of the vehicle and weight units is applied to the lifting legs and the rear axle assembly, both of which are confined within the periphery of the individual scale section. The known vehicle load is then compared with the load indicated by the scale. If required, individual areas within the periphery of the scale section are tested by removing the vehicle from the scale section and placing uniform weight units at various locations on the scale section. A comparison is then made of the known load of the uniform weight units and the load indicated by the scale at each of the various areas tested.
REFERENCES:
patent: 411269 (1889-09-01), Taylor
patent: 2499072 (1950-02-01), McClure
patent: 2672317 (1954-03-01), Barenyi
patent: 3785297 (1974-01-01), Barnard et al.
Smith, Testing Equipment for Large-Capacity Scales for the Use of Weights & Measures Officials, Miscellaneous Publication 104, Bureau of Standards, Dept. of Comm., 1930.
Emch Richard D.
Swisher S. Clement
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