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US 4,364,552 AGranted
Method and apparatus for forming a stream of partially overlapping paper sheets or the like
AssigneeE.C.H. Will GmbH
InventorAlfred Besemann
Life of this patent
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AssigneeE.C.H. Will GmbH
InventorAlfred Besemann
Estimating the term…
A series of separate paper sheets issuing from a cross cutter wherein a running paper web is subdivided into discrete sheets is converted into a stream of partly overlapping sheets by transporting the sheets of the series at a first speed onto the upper reach of a belt conveyor which is driven at a lower second speed. A cylindrical braking roller is adjacent to the sheet-receiving end of the upper reach of the belt conveyor and is driven at a peripheral speed matching the second speed. A flat of the otherwise cylindrical peripheral surface of the braking roller is adjacent to but out of contact with the leading edges of successive sheets of the series but the cylindrical surface of the roller engages the intermediate portions of successive sheets and decelerates such sheets from the first to the second speed. This ensures that reaction liquid cannot escape at the leading edges of successive sheets which constitute carbon-free pressure-sensitive copy paper sheets. The belt conveyor is located at a level below the level of oncoming sheets which advance at the first speed and cooperates with a rotary cam having a lobe which pushes the trailing edges of successive decelerated sheets onto the upper reach of the belt conveyor so that the leading edges of the oncoming sheets overlie the depressed trailing edges of the preceding sheets.
Apparatus for converting a series of non-overlapping sheets into a stream of partially overlapping sheets, particularly for converting a series of non-overlapping paper sheets which issue from a cross cutter wherein a running paper web is severed to yield discrete sheets, comprising transporting means for advancing the sheets in a predetermined direction along a predetermined path, said transporting means including first conveyor means for advancing the sheets of said series at a first speed along a first portion of said path wherein each sheet has a leading edge, an intermediate portion behind the respective leading edge and a trailing edge behind the respective intermediate portion, said transporting means further including second conveyor means for advancing the sheets of said stream at a lower second speed along a second portion of said path downstream of said first portion, as considered in said direction;
Apparatus for converting a series of non-overlapping sheets into a stream of partially overlapping sheets, comprising transporting means for advancing the sheets in a predetermined direction along a predetermined path, said transporting means including first conveyor means for advancing the sheets of said series at a first speed along a first portion of said path wherein each sheet has a leading edge, an intermediate portion behind the respective leading edge and a trailing edge behind the respective intermediate portion, said transporting means further including second conveyor means at a lower level than said first conveyor means for advancing the sheets of said stream at a lower second speed along a second portion of said path downstream of said first portion, as considered in said direction;
Dependencies are inferred from the claim text.