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US 3,998,118 AGranted
Roll fed copier
AssigneeRoyal Business Machines, Inc.
InventorsWilliam R. Brophy, Richard G. Dolson
Life of this patent
Estimating the term…
Abstract
A roll fed copier is provided with mechanism responsive to depression of a copy button to start or turn on power to the machine and thereby initiate the feed of copy paper from a supply roll and to cock a sprng-powered knife which is tripped by linkage operated by an adjustable copy length control on the movable original carrying platen. Additional mechanism is also provided to break the power lines to the machines if the copy button is not actuated for a predetermined interval.
Claims10
In a copy machine having a frame,
- a roll of copy paper supported on said frame,
- a pair of frame supported feed rolls for moving copy paper from said roll, said feed rolls having an entry side and an exit side,
- a stationary knife and a normally uncocked movable knife positioned on the exit side of said feed rolls,
- a spring connecting said movable knife to said frame,
- a motive source,
- a depressible copy control means for initiating a copy cycle,
- first means responsive to a first depression of said copy control means for energizing said motive source,
- a knife cocking and paper feed shaft,
- a single revolution clutch engageable in direct response to each depression of said copy control means for coupling said energized motive source and shaft,
- means on said shaft for moving said movable knife against said knife spring to a cocked position,
- means to latch said movable knife in cocked position whereby copy paper fed by said feed rolls may move between said stationary and cocked knives,
- means coupling said shaft to drive said feed rolls after said movable knife has been cocked and latched,
- and means on said frame responsive to the trailing edge of an original to be copied for releasing said latch means to enable said movable knife to cut copy paper between said stationary and movable knives.
10 more elements
In a copy machine having a frame,
- an original supporting platen mounted for movement on said frame,
- a member on said platen settable opposite the trailing edge of an original placed on said platen for copying,
- a roll of copy paper supported on said frame,
- a pair of frame supported feed rolls for moving paper from said roll, said feed rolls having an entry side and an exit side,
- a stationary knife and a movable knife positioned on the exit side of said feed rolls,
- a spring connecting said movable knife to said frame,
- a motive source,
- a single depressible copy control means for initiating a copy cycle,
- first means responsive to a first depression of said copy control means for energizing said motive source over an interval longer than a copy cycle and for deenergizing said motive source if said copy control means is not again depressed within a predetermined time after completion of a first initiated cycle,
- second means responsive to each depression of said copy control means for first moving said movable knife against said knife spring to a cocked position and for thereafter coupling said energized motive source to said feed rolls, whereby paper fed by said feed rolls may move between said knives,
- means to latch said movable knife in cocked position whereby paper fed by said feed rolls may move between said stationary and cocked knives,
- and means on said frame in the path of said positioned member for releasing said means latching said movable knife thereby to cut paper between said stationary and movable knives.
9 more elements
In a copy machine having a frame,
- a roll of copy paper supported on said frame,
- a pair of frame supported feed rolls for moving paper from said roll, said feed rolls having an entry side and an exit side,
- a stationary knife and a movable knife positioned on the exit side of said feed rolls,
- a spring connecting said movable knife to said frame,
- a motive source,
- a depressible copy control means,
- first means responsive to depression of said copy control means for energizing said motive source,
- second means responsive to depression of said copy control means for moving said movable knife against said knife spring to a cocked position and for coupling said energized motive source to said feed rolls, whereby paper fed by said feed rolls may move between said knives,
- means to latch said movable knife in cocked position whereby paper fed by said feed rolls may move between said stationary and cocked knives,
- said first means for energizing said motive source comprising a disc,
- a spring biasing said disc in one direction,
- said copy control means normally holding said disc in a home position against movement by said spring and acting on depression to release said disc,
- and switch means operative in response to movement of said disc from home position to energize said motive source.
10 more elements
In a copy machine,
- a motive source for driving mechanism to produce a copy of an original on copy paper,
- operator depressible means for energizing said motive source including a disc,
- a spring biasing said disc for rotation in one direction,
- said operator depressible means normally holding said disc against rotation in a home position against movement by said spring and acting when depressed to release said disc,
- switch means responsive to movement of said disc from home position for energizing said motive source,
- means for limiting rotation of said released disc after rotation through a predetermined arc to a limit position comprising an abutment on said disc and a stop finger on said operator depressible means,
- and means driven by said energized motive source for indexing said disc to return it to home position after a predetermined time interval,
- said operator depressible means operative on each depression to release said disc positioned intermediate said home and said limit positions to said limit position.
5 more elements
Dependencies are inferred from the claim text.