Chain elongation gauge

Details Chain elongation gauge Chain elongation gauge

1977-04-01

1978-06-06

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

33147J, G01B 500

Patent

active

040927814

ABSTRACT:
An apparatus for measuring the elongation of chains due to joint wear. The chain under test is tensioned between two arms associated with two nested tubular elements housing a compressed coil spring.
A cylindrical indicator having a helicoidal scale cooperate with the two tubular elements to allow a direct reading of the percentage of elongation of the chain in relation to the length of a reference chain.

REFERENCES:
patent: 412631 (1889-10-01), Kraehmer
patent: 686497 (1901-11-01), Wiedmann
patent: 1111030 (1914-09-01), O'Brien
patent: 1254607 (1918-01-01), Kock
patent: 3200501 (1965-08-01), Keszler
patent: 3289307 (1966-12-01), Kelly

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