Apparatus for testing the tensile strength of sheet material

Details Apparatus for testing the tensile strength of sheet material Apparatus for testing the tensile strength of sheet material

1976-08-20

1977-11-29

Myracle, Jerry W.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

G01N 310

Patent

active

040599922

ABSTRACT:
An improved testing device for testing the tensile strength of sheet material, such as paper, including a first pair of vertically moving jaws mounted on a support and a second pair of vertically moving jaws hanging from the first support in a pendulum manner and adapted to be at a dead-center position with the second pair of jaws juxtaposed to the first pair of jaws and in contact therewith for gripping a sheet of material to be tested therebetween. Low pressure, large diameter, pneumatic cylinders are provided for moving the lower jaws of each pair upwardly towards the fixed jaws against a self-aligning cylindrical spring.

REFERENCES:
patent: 3318142 (1967-05-01), Shoemaker
patent: 3707119 (1972-12-01), Cowan

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