Abstract In silk screen printing machines in which there is a printing frame required to be transversely registered, a pair of longitudinally arranged parallel guides, the printing frame being slidably mounted on said guides for reciprocable movement in a first direction, a second pair of longitudinal guides arranged at right angles to said first pair of guides and coupled to said first pair of guides for reciprocable movement in a second direction at right angle relative to said first direction, the printing frame being mounted to said first and second pair of guides, a first rack and pinion coupling capable of moving said printing frame in said first direction and a second rack and pinion coupling operable on said pair of second guides to move said printing frame in said second direction, a worm gear coupled to the pinion of said second rack and pinion coupling and an endless screw coupled to said worm gear and to said printing frame. A control wheel is operatively coupled to said worm gear by way of said endless screw, manipulation of said wheel being effective to move said printing frame along said second pair of guides to effect movement thereof in the second direction.
Inventors
👤 Umberto Brasa
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-31 13:01
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/08; B41F15/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
199 words
In a silk screen printing machine which includes a printing frame movable in a reciprocating operating direction and required to be registered transversely of said operating direction and first rack and pinion means coupled to said printing frame for effecting reciprocating longitudinal translation thereof in said operating direction; said frame being slidably mounted upon a pair of longitudinal arranged parallel first guides, each of said guides having supports at their extremities, said supports having orthogonal axes relative to the first guides, second guides comprising a pair of parallel arranged cross-pieces, each extending between and engaged with the supports at a common extremity of said first guides along said orthogonal axes respectively, said machine having a pair of arms fixed thereto and disposed inwardly of said frame and adjacent to opposite edges thereof and having an elongate shaft supported between said arms, means to rotate said shaft from a single location therealong, second rack and pinion means coupling each of said cross-pieces and said shaft at the opposite ends of said shaft to enable both cross-pieces and the printing frame to be moved in a direction transverse during operation of the frame in the operating direction to achieve said registration.
Claim 2
Dependent Claim
199 words
In a silk screen printing machine which includes a printing frame movable in a reciprocating operating direction and required to be registered transversely of said operating direction and first rack and pinion means coupled to said printing frame for effecting reciprocating longitudinal translation thereof in said operating direction; said frame being slidably mounted upon a pair of longitudinal arranged parallel first guides, each of said guides having supports at their extremities, said supports having orthogonal axes relative to the first guides, second guides comprising a pair of parallel arranged cross-pieces, each extending between and engaged with the supports at a common extremity of said first guides along said orthogonal axes respectively, said machine having a pair of arms fixed thereto and disposed inwardly of said frame and adjacent to opposite edges thereof and having an elongate shaft supported between said arms, means to rotate said shaft from a single location therealong, second rack and pinion means coupling each of said cross-pieces and said shaft at the opposite ends of said shaft to enable both cross-pieces and the printing frame to be moved in a direction transverse during operation of the frame in the operating direction to achieve said registration.
Claim 3
Dependent Claim
122 words
The apparatus as claimed in claim 1 in which the means to rotate said shaft comprises a helicoidal wheel secured to said elongate shaft at one end thereof, an endless screw threadably engaged with the helicoidal wheel, support means secured to said printing frame and bracing said endless screw so that the rotational axis of said screw is vertically oriented and a control wheel is secured to said endless screw coaxial therewith, manipulation of said control wheel capable of operating said endless screw in turn to rotate said helicoidal wheel thereby to rotate the shaft and the pinions thereby to cause transverse movement of the rack portion of each of the cross-pieces so as to move the frame in a transverse direction.