Geometrical instruments – Area integrators – Electrical
Patent
1986-04-17
1987-07-07
Haroian, Harry N.
Geometrical instruments
Area integrators
Electrical
G01B 302
Patent
active
046777520
ABSTRACT:
A tool for measuring rolled-up material comprises a housing with a measuring thread spool rotatably mounted in the housing, having a supply of measuring thread thereon, which is delivered out of the housing through a rotatable delivery tube which is angled to one side so that the tip of the tube may be passed around the material to be measured after the measuring material is anchored to the end of the material being measured. The measuring thread is advantageously passed over the thread spool which may be cylindrical and of uniform diameter or may vary in diameter from one side to the other. The thread spool is part of a counter which records the length of measuring thread that is fed out, preferably in feet and inches when the thread spool is made in the form of a cone measuring thread is guided on each side of the spool so that it passes over selective thicknesses of the spool and, thus, the feed-out speed is varied and so is the counting in dependence on how the thread is guided over the spool.
REFERENCES:
patent: 78399 (1868-05-01), Shotwell
patent: 293914 (1884-02-01), Sampson
patent: 375026 (1887-12-01), Tuxbury
patent: 2637112 (1953-05-01), Fontaine et al.
patent: 3170240 (1965-02-01), Collins
patent: 3785055 (1974-01-01), Anderson et al.
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