Printing – Stenciling – Stencils
Patent
1982-10-26
1984-04-17
Burr, Edgar S.
Printing
Stenciling
Stencils
1014151, B05C 1708
Patent
active
044427727
ABSTRACT:
In the preparation of screen process stencils a stencil frame is enclosed tightly by a pneumatically operated frame. Once the stencil frame is enclosed the pneumatic tensioning frame is inflated pulling a screen fabric outwardly to stretch the same with a concomitant vertical movement of the frame member and frame supporting portion of the tensioning frame so that the top wall of the frame member is pushed tightly and intimately against the underside of the screen fabric thereby promoting the desired adhesion between the fabric and the frame. This is achieved inexpensively in the present invention by providing a support means which supports the screen tensioning device at a predetermined angle to the horizontal so that with movement of the fabric carrying portion outwardly away from the stencil frame, the frame support portion is being raised and is lifting the side frame member upwardly against the underside of the screen fabric.
REFERENCES:
patent: 3176843 (1965-04-01), Hoskins et al.
patent: 3414994 (1968-12-01), Jaccard et al.
patent: 3422554 (1969-01-01), Prinzhorn
patent: 3608482 (1971-09-01), Bubley
patent: 3608484 (1971-09-01), Bubley
Cincinnati Printing and Drying Systems Inc. Advertisement for "Screen Stretching Clamps," published 11-5-71.
American Screen Printing Equipment Company
Burr Edgar S.
Weresh John A.
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