Load measuring gage

Details Load measuring gage Load measuring gage

G - Physics

01

L

73/120, 73/70

G01L 1/10 (2006.01)

Patent

CA 1046793

In re application of CLARENCE O. BABCOCK For: LOAD MEASURING GAGE ABSTRACT A load measuring gage with a vibratory wire. In the embodiment preferred for its cost, a single short stressed piano wire is fixed at its ends in a vertical cut out slot in a steel gage body. If accuracy is more important than cost, three of these wires equidistantly spaced in individual vertical slots on a steel gage body may be used in an alternate embodiment. The steel gage body may be in the shape of a hollow cylinder which is made from medium carbon steel tubing. Each of the piano wires employed are tensioned to tens of thousands of pounds per square inch stress and then crimped into slots in the gage body. When in place with a load placed on ends of the gage body, a low voltage readout system can be used to pluck the wires to determine its initial vibratory mode. Should the load be due to a tightened rock bolt, the initial voltage reading can be correlated to the torque placed on the tightened bolt. Subsequent readings made by the readout system can be used to indicate variations from the initial vibration readings and thereby alert observers to changes in the tension on the bolt. -1-

230484

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