Tensiometer capable of being attached to a cable under tension

Details Tensiometer capable of being attached to a cable under tension Tensiometer capable of being attached to a cable under tension

1979-09-11

1980-12-30

Woodiel, Donald O.

Measuring and testing

Volumetric content measuring

G01L 504

Patent

active

042416167

ABSTRACT:
The tensiometer is designed to measure the tension in cables from extremely heavy loads as might occur in large cranes and in oil well rigs. The tensiometer utilizes a pair of spaced tandem pulleys bearing against spaced points on the cable and a central pulley engaging an opposite point intermediate the spaced points so as to force the cable laterally. The tension in the cable tends to straighten the cable and thus exert a load on the central pulley and by measuring this load, a force is developed constituting a function of tension in the cable. The central pulley is removably mounted from the frame structure on an arm. One end of this arm is thus arranged to be pivoted to the frame structure after the cable has been received against the first and second pulleys. The other end of the arm is then connected to the end of a line from a winch structure mounted on the frame so that the arm can be winched inwardly towards a parallel relationship with the frame thereby urging the central pulley against the cable and moving the cable laterally. When the arm is fully winched to a predetermined position, it is locked in place by a pin and the force exerted on the central pulley tending to straighten the cable is then measured and constitutes a function of the tension in the cable. The winch arrangement permits attachment of the device to the cable while the cable is under tension.

REFERENCES:
patent: 1780238 (1930-11-01), Linoln
patent: 3447364 (1969-06-01), Gelfand et al.
patent: 4163126 (1979-07-01), Mastrigt
patent: 4171640 (1979-10-01), Mastrigt
patent: 4182167 (1980-01-01), Nakayama et al.

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