Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1991-01-09
1992-03-24
Raevis, Robert
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
G01N 320
Patent
active
050977130
ABSTRACT:
Apparatus for testing the stiffness of fabrics comprises a box defining a space that is free of air currents, the top wall being movable to permit access to the space, the rear wall having a planar inside surface and the front wall being planar and parallel to the inside surface of the rear wall and being transparent to enable the space and the inside of the rear wall to be viewed from outside the box. A shelf mounted within the space and having a planar top surface bounded by a straight edge that is aligned substantially perpendicularly to the front wall supports a portion of a fabric sample. The remainder of the sample drapes freely from the edge of the shelf. A plate is placed on the portion of the sample on the shelf to hold it flat and stationary. Indicia marked on the inside face of a mirror on the rear wall of the box indicate the amount of drape of the portion of the fabric draping from the edge of the shelf. The mirror enables a viewer to view the indicia from a vantage point in which the indicia and the reflection of the indicia are aligned, thereby eliminating parallax and improving the accuracy of the measurement.
REFERENCES:
patent: D119743 (1940-04-01), Dreyfuss
patent: 3057191 (1962-10-01), Holloway
patent: 3368394 (1968-02-01), Pasinski et al.
ASTM Designation D-1388-64.
ASTM Designation D-4032-82.
Hosiery Times, Mar. 1953, pp. 59 and 61.
Japan Textile News, Sep. 1976, p. 107.
Kettenwirk-praxis Apr. 1973, pp. 17-18.
Thwing-Albert Handle-O-Meter.
Textile Month, Aug. 1988, p. 77.
Textile Industries, Jan. 1968, pp. 86, 85, 91, 92, 94.
Advertisement J. A. King, Air Operated Fabric Stiffness Tester.
Advertisement J. A. King Fabric Stiffness Tester.
British Knitting Industry, Apr., 191, p. 62.
Textile Industries, May 1954, p. 118.
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