Apparatus for testing a forms set for print through quality

Details Apparatus for testing a forms set for print through quality Apparatus for testing a forms set for print through quality

1977-11-07

1978-10-31

Myracle, Jerry W.

Measuring and testing

Gas content of a liquid or a solid

By vibration

G01N 330

Patent

active

041227026

ABSTRACT:
Apparatus for testing the print through quality of a forms set. The apparatus comprises a horizontal base plate which is adapted to have the forms set laid thereupon. Sleeve means is mounted above the base plate for guiding a hammer for vertical movement to and from a position where its face strikes the forms set disposed on the base plate. Means are provided for releasably locking the hammer at a preselected one of a plurality of heights above the forms set. A raised test sign is provided on either the face of the hammer or on the upper surface of the base plate below the face of the hammer.

REFERENCES:
patent: 1537179 (1925-05-01), Moller
patent: 3266289 (1966-08-01), Stamy

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