Counter-pressure beam for use in screen printing machines and st

Details Counter-pressure beam for use in screen printing machines and st Counter-pressure beam for use in screen printing machines and st

1974-06-19

1976-05-25

Burr, Edgar S.

Printing

Stenciling

Stencil and work support

52291, 101407R, B41F 1524

Patent

active

039585077

ABSTRACT:
A screen printing machine wherein the stencil rotates above a hollow counter-pressure beam having a rectangular profile and carrying a removable strip which engages the underside of the back cloth. The beam is stiffened by two tie rods which are adjacent to its side faces and extend through bearings affixed to the lower portion of the beam. Upward flexing of median portions of the tie rods is prevented or controlled by vertical bolts which mesh with brackets secured to the beam and whose lower end portions abut against flats on the median portions of the respective tie rods. The tie rods are tensioned by nuts so that they prevent the median portion of the beam from sagging under its own weight and/or due to pressure which is exerted by the central portion of the stencil through the medium of the fabric and back cloth.

REFERENCES:
patent: 2578413 (1951-12-01), Ford
patent: 3305988 (1967-02-01), Halopoff
patent: 3605364 (1971-09-01), Ford
patent: 3795188 (1972-03-01), Giani
patent: 3830155 (1974-08-01), Pinedo

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