Pivotal squeegee mount with fluid bias

Details Pivotal squeegee mount with fluid bias Pivotal squeegee mount with fluid bias

1974-06-19

1976-12-21

Crowder, Clifford D.

Printing

Stenciling

Rotary machines

101122, B41F 1508, B41F 1544

Patent

active

039981576

ABSTRACT:
A screen printing machine wherein a cylindrical stencil is rotatable about a horizontal axis and the liquid-supplying header in the stencil supports a carrier for a horizontal pintle pivotably mounting an elongated holder for a blade-like or rod-like squeegee. A gas-filled deformable cushion between the carrier and the holder biases the squeegee against the internal surface of the stencil opposite the locus where the external surface of the stencil contacts the material to be printed. Several helical springs which are attached to the holder and to the header bias the holder upwardly with a force which compensates for the combined weight of the squeegee and holder so that the force with which the squeegee bears against the internal surface of the stencil depends exclusively on the regulatable pressure of gaseous fluid in the cushion.

REFERENCES:
patent: 1956562 (1934-05-01), Coates
patent: 2363137 (1944-11-01), Metcalf
patent: 2928340 (1960-03-01), Stein et al.
patent: 3029779 (1962-04-01), Hornbostel
patent: 3110919 (1963-11-01), Barnby
patent: 3718086 (1973-02-01), Vertegaal
patent: 3735730 (1973-05-01), Mitter
patent: 3795188 (1974-03-01), Giani
patent: 3934502 (1976-01-01), Marino

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