Measuring and testing – Dynamometers – Responsive to force
Patent
1983-01-31
1985-08-13
Rowland, James L.
Measuring and testing
Dynamometers
Responsive to force
G01L 508
Patent
active
045342288
ABSTRACT:
A tension gage for ready mounting upon a wireline between its load and free ends and adapted to provide measurements of tension conditions exerted upon the wireline. The tension gage has a body with a central post to engage the wireline in a saddle mount and connected with a transmitter which produces a pneumatic signal indicative of wireline forces acting on the post. Rollers at each end of the body engage and laterally displace at certain angles the wireline to each side of the post. The rollers are mounted on eccentric pivots whereby the rollers can be moved to release or engage the wireline over predetermined distances. Swinging bridge roller mounts allow the body to be placed with the post against the wireline, and then, locked to it in operative position. An adjustment calibrates the transmitter to zero line tension conditions for using the tension gage as an accurate weight indicator. The gage is without loose parts and is roughneck proof in installation, especially on oil well drilling rigs.
REFERENCES:
patent: 1771339 (1930-07-01), Martin
patent: 2703008 (1955-03-01), Seljos
patent: 3031169 (1962-04-01), Robinson
patent: 3176510 (1965-04-01), Kimmell
patent: 3310981 (1967-03-01), Nixon
patent: 3372582 (1968-03-01), Weiss
patent: 3484807 (1969-12-01), Roden
Bear MFG Corporation, "Assembly Installation of Strain Guage D-1-80", C-364, 6/21/77.
Rowland James L.
Tumm Brian R.
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