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US 4,404,598 AGranted
Copying and engraving apparatus
OwnerHenry G. Scuilliinventor
Life of this patent
Estimating the term…
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OwnerHenry G. Scuilliinventor
Estimating the term…
In an engraving machine a scanning head on the carriage is positioned adjacent a reader drum, and an opposite cutter head is positioned adjacent an engraving drum. The scanning head is movable sideways so that test runs may be conducted along the side of a plate mounted on the engraving drum. The engraving drum and the scanning drum have clamps to hold a photograph and the engraving plate. As the scanning head senses a particular shade of the photograph or article being copied, the cutting head is moved toward the engraving drum to engrave the plate on the drum to a particular degree. Both drums rotate together, and the carriage is intermittently stepped along the drums by the lead screw. Two ground parallel bars support a carriage on three Nylatron sliders, each of which has three Nylatron shoes. A lead screw operated by a DC motor is connected to the carriage by centrally mounted split half nuts.
A copying apparatus comprising
An engraving apparatus having a base, drum supporting means connected to the base, a drum connected to the supporting means, the drum having a photograph holding means and an engraving plate holding means, and elongated guide means mounted on the base parallel to the drum, a carriage mounted on the guide means, a lead screw mounted on the base parallel to the guide means and connected to the carriage for moving the carriage upon turning of the lead screw, a motor mounted on the base and connected to the drum for turning the drum, a ratchet means connected to the motor and connected to the lead screw for stepping the lead screw and carriage upon turning of the drum, a scanning sensor head mounted on the carriage and first adjustment means mounted between the scan sensor head and the carriage for adjusting longitudinal and transverse position of the head, a cutter head mounted on the carriage, second adjusting means mounted between the cutter head and the carriage for selectively moving the cutter head toward the drum, a shaft mounted in the cutter head for reciprocation toward the drum, solenoid means connected to the shaft and the cutter head for driving the shaft toward the drum, and a cutter blade mounted on an end of the shaft adjacent the drum for engraving a plate on the drum when the shaft is moved toward the drum by the solenoid.
Dependencies are inferred from the claim text.