Abstract A mechanism facilitating the loading of a copying machine with a stack of paper includes a lid hinged to the machine wall and swingable between a vertical position exposing the opening. A feed roller is fixed to a first shaft rotatably supported at a point remote from the opening between sidearms which are swingable about an upper drive shaft which is belt coupled to the first shaft so that the feed roller is movable with the sidearms between a raised retracted position and a normally lowered advanced position. Cam members are mounted on the lid and levers pivoted between their ends for swinging about a transverse horizontal axis have their inner ends engaging the underfaces of the sidearms and their outer ends provided with cam followers engaging the cams whereby the opening of the lid raises the feed roller to permit the insertion of a paper stack and the closing of the lid releases the sidearms to permit the lowering of the feed roller into engagement with the top sheet.
In a copying machine having an end opening providing access to the interior of said machine to permit the loading thereof with a stack of paper sheets: a. a lid hinged to said machine and swingable between a closed position registering with said end opening and an open position exposing said opening; b. a paper sheet stack support member positioned in said machine and longitudinally movable through said opening; c. a transverse drive shaft positioned above said support member; d. an arm swingably supported about the axis of said drive shaft; e. a transverse driven shaft rotatably supported by said arm and normally downwardly urged therewith; f. a friction feed roll affixed to said driven shaft for rotation therewith; g. transmission means drive coupling said shafts; h. a cam mounted on the inner face of said lid and movable therewith; and i. a lever pivoted between its ends about a transverse axis and having an inner end movable into engagement with said arm and an outer end provided with a follower defining element engaging said cam whereby the opening of said lid effects the raising of said lever and driven shaft to a retracted position permitting the insertion of a paper sheet stack and said support member beneath said feed roll and the closing of said lid effects the release of said lever and driven shaft to drop said feed roll into engagement with the top of said stack.
Claim 2
Dependent Claim
239 words
In a copying machine having an end opening providing access to the interior of said machine to permit the loading thereof with a stack of paper sheets: a. a lid hinged to said machine and swingable between a closed position registering with said end opening and an open position exposing said opening; b. a paper sheet stack support member positioned in said machine and longitudinally movable through said opening; c. a transverse drive shaft positioned above said support member; d. an arm swingably supported about the axis of said drive shaft; e. a transverse driven shaft rotatably supported by said arm and normally downwardly urged therewith; f. a friction feed roll affixed to said driven shaft for rotation therewith; g. transmission means drive coupling said shafts; h. a cam mounted on the inner face of said lid and movable therewith; and i. a lever pivoted between its ends about a transverse axis and having an inner end movable into engagement with said arm and an outer end provided with a follower defining element engaging said cam whereby the opening of said lid effects the raising of said lever and driven shaft to a retracted position permitting the insertion of a paper sheet stack and said support member beneath said feed roll and the closing of said lid effects the release of said lever and driven shaft to drop said feed roll into engagement with the top of said stack.
Claim 3
Dependent Claim
37 words
A device as set forth in claim 1, characterized in that said transmission means is a chain which operatively meshes with a sprocket wheel secured to said drive shaft and another sprocket secured to said driven shaft.
Claim 4
Dependent Claim
21 words
A device as set forth in claim 1, characterized in that said lever has a head pin engageable with said arm.
Claim 5
Dependent Claim
69 words
A device as set forth in claim 3, characterized in that said device further comprises a spring means acting on said arm so as to bias said head pin away from said arm for effecting a constant pressure between said frictional roller means and said stack of paper by the weight of that portion of said device which acts on said stack of paper when said lid is closed.