Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1981-09-18
1983-09-20
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73838, G01N 308
Patent
active
044048572
ABSTRACT:
A portable seam tester is provided for testing the seam strength, on the job site, of large sections of flexible sheet material formed by seaming together smaller size panels. The tester has a piston and cylinder mechanism carrying spaced toggle action clamping means adapted to receive and retain folded double-thickness portions of the material at opposite sides of a seam. Pressurized fluid is controllably supplied to the cylinder to force the clamping means away from each other, thereby placing the material in tension so as to impose a predetermined stress on the seam.
REFERENCES:
patent: 2864582 (1958-12-01), Hall
Hardison Leslie C.
Sandstrom Kenneth A.
Myracle Jerry W.
National Seal Company
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