Sheet-driven type automatic drafting machine

Details Sheet-driven type automatic drafting machine Sheet-driven type automatic drafting machine

1992-03-19

1993-02-02

Cuchlinski, Jr., William A.

Geometrical instruments

Scriber

33 1M, 33 324, 33 326, 271171, 271273, 4006361, B43L 1300, B65H 520

Patent

active

051828618

ABSTRACT:
A sheet-driven type automatic drafting machine has a drive roller or rollers and a rotary drive mechanism connected to the drive roller or rollers, a Y-axis rail extending in the Y-axis direction above the drive roller or rollers, a line-drafting head movably mounted on the rail for movement along the rail and a head driver connected to the head for driving the head along the rail, a shaft positioned above the roller or rollers and parallel to said rail, a first press roller arm pivotally mounted on the shaft for pivoting around the shaft at a predetermined position thereon, a second press roller arm pivotally mounted on the shaft for pivoting around the shaft and for movement along the shaft, the press roller arms each having a press roller at one end thereof engagable with the drive roller or a corresponding drive roller when the press roller arms are pivoted toward the drive roller or rollers for pressing a drafting sheet therebetween and enabling the drafting sheet to be driven in an X-axis direction by the drive roller or rollers, an arm elevating device engaged with the arms for pivotally driving the arms for separating the press roller from the drive roller or rollers, a cursor movable along the Y-axis rail and driven by the head driver with the drafting head, and an arm drive engagement body on the cursor engagable with the second press roller arm for driving the second roller arm along the shaft in the Y-axis direction.

REFERENCES:
patent: 3241665 (1966-03-01), Erk
patent: 4021030 (1977-05-01), Fitche et al.
patent: 4603987 (1986-08-01), Kuranishi et al.
patent: 4647239 (1987-03-01), Maezawa et al.
patent: 4856770 (1989-08-01), Farlotti
IBM Technical Disclosure Bulletin, vol. 22 No. 8A, Jan. 1980 "Motor Driven Fuser Roll Closure", p. 3116, Boumann, Chang, Clark.

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