Measuring and testing – Dynamometers – Responsive to force
Patent
1989-04-21
1990-05-08
Ruehl, Charles A.
Measuring and testing
Dynamometers
Responsive to force
340668, G01L 510
Patent
active
049227629
ABSTRACT:
Methods and associated apparatus for adjusting the tension in a bowable member using a gauge having an indicator activated upon the gauge being pressed against a resistance having a threshold force. The gauge includes calibrating apparatus for adjusting the threshold force. The member is held in adjustable tension-applying apparatus. The method comprises the steps of operating the calibrating apparatus so that the threshold force corresponds to a desired level of tension in the member and pressing the tensioning gauge and the member together to cause the member to bow while operating the tensioning apparatus to reduce the tension until the indicating apparatus is not active, and then operating the tensioning to increase the tension until the indicating apparatus is active. In an alternate configuration, the gauge has a plurality of tangs arranged in a line and indicators indicating the number of the tangs being pressed to an activating position and the method comprises the steps of pressing the gauge and the member together to cause the member to bow and observing the indicators while operating the tensioning apparatus to reduce the tension until a number less than a selected number of the tangs is pressed against threshold forces to the activating position and then operating the tensioning apparatus to increase the tension until the selected number of the tangs are pressed against threshold forces to the activating position.
REFERENCES:
patent: 2787159 (1957-04-01), Tammen
patent: 3296857 (1967-01-01), Kaczeus
patent: 3572110 (1971-03-01), James et al.
patent: 3969713 (1976-07-01), Bossler, Jr.
patent: 4324049 (1982-04-01), Blose
Billson Anthony R.
Ruehl Charles A.
Streck Donald A.
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