US868317A - Paper-feeding mechanism. - Google Patents

Description

PATENTED OCT. l5. 1907.

. ALLEN.

APEL-NATION ILED EEO. 30. '1904.

4being fed forwardly from the ridge to the press. This nto. handle the sheets singly l have utilizedablast 4or v struction, located at or near the apex of the ridge.

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ARTHUR S. ALLEN, OF BROOKLINE, MASSACHUSETTS.

PAPE R-FEEDING ME CHANISM.

Specification of Letters Patent.

Patented Get. l5, 1907.

Application filed December 30,1904. Serial No. 238,885.

To all ywhom it may concern:

Be it known that l, ARTHUR S/ALLEN, a citizen of the United States, and a resident of Brookline, in the county of Norfolk and State of Massachusetts, have invented an Improvement in Paper-Feeding Mechanism, ofwhich the following description, in connection with the accompanying drawing, is a specication, like letters on the drawings representing like parts.

This invention is intended as an improvement on the class of paper-feeding mechanism shown` in United States Pateut'No. 748,279, dated December 29, 1903, wherein, as described, a ridge has an inclined'side next the pile of sheets from -which the topmost sheets are started by a wheel or rotary member in contact with the topmost sheet, said sheet being .pushed beyond the sheets thereunder and contacting with and being forced up the inclined side of the ridge to'be seized by sheetdrawing means located at the apex of the ridge and substantially midway the length of the ridge, the sheets ridge is employed to lift the edges of the sheets as they approach the sheet-drawing means to thus lift the lead-y ing end of the top sheet sufficiently for the entrance of air therebetween and so prevent the clinging .together of the leading ends of two or more sheets which may have been pushed o ff the pile. When the leading ends oi the sheetscling together it is very difficult, if not impossible, for the drawing-0H rollers or means to grasp the leading 'end oi each single sheet and draw each sheet separately from the top ofthe pile of sheets that each shetmay be delivered to sheet-gripping or feeding rollers that pass each sheet singly to the press meehanism.

To overcome all tendency of the leading ends of the sheets clinging together and thus rendering it ditlicu t current of air which is so directed as to act under the leading end of the top sheet as it is shoved or moved off the pile of sheets and up the inclined side of the ridge, l have ascertained that a blast or current of air may be so controlled as to its force as to partially or substantially sustain the weight of the leading end of the top sheet as it is made to leave the top of the pile and during its journey up theincline of the ridge to be grasped by the sheet-drawing or feeding means, oi whatever con- Figure l is a sectional detail showing a pile of sheets, means for moving the top sheet of the pile up the incline of the ridge, and -means vfor creating a current or blast of air which is delivered through the inclined face ofthe ridge under the advancing sheets; Fig. 2 is a detail of part oi the ridge showing some of the covering through which the air is discharged; Fig. 3 is adetail of the covering, and Fig. 4 shows a modified form of cover.

Referring to the drawing, A represents a pile of sheets, B' a combing-wheel which is mounted on a stud B heid in a counterbalanced frame, the wheel being adapted vto act upon and shove the top sheet a from the pile; C

represents a rotatable wheel fixed on a shaft and 8 a y Wheel mounted loosely on a stud' carried by an arm secured to a rock-shaft 7, the wheel being free to be' moved up and down in an opening at the apexA of a ridge D, the opening being substantially midway the ends of the ridge, .the wheels C and 8 being employed to grasp the leading end of each sheet shoved off the pile by the combing-wheel, or any other usual device,

and forced up the incline a of the ridge. The parts thus far described may, and are supposed to be, common to United, States Patents Nos. 748,279, dated December 29, 1903, and 744,053, dated January 26, 1901i.v

The invention to be herein described has more especially for its object to prevent the possible clinging to gether of the leading ends of the paper and insuring that the wheels C and 8 grasp singly the leading end of each.

'to permit the compressed air conned in the cylinder to be delivered therefrom to the ridge with the desired force or pressine, the air passing from the ridge through suitable holes or orifices at the inclined face oi the ridge, the latter being herein shown as provided with a series of air passages to discharge the air under pressure and deliver the same to the under sides of the leading ends o the sheets being shoved ofi the top of the pile of sheets l and up the incline. For the best results I have made the part of the ridge next the pile of sheets hollow as represented in Fig. l, and I have covered the top of the hollow space with a tneryreticnlated cover which may be Composed either of a series of coils of ne wire intermeshed one with another or 'in pairs by shoving one wire, preferably right twisted, laterally into the side of another wire-coil, preferably left twisted, as provided for in United StatesPatent No. 748,279 wherein said wire-coils are employed in connection with the tympan of a press. Herein, however, the illing in the interstices of the wire-Coils will be omitted, and preferably the wire-coils will be extended in a direction crosswise of the ridge as thereby the interstices ofthe coils have a tendency to deliver the line streams of air spread out,

as it were, in the direction of the length oi' the ridge. Instead, however, of the intermeshed wire-coils torming the cover' 'e ridge, l may use thin sheet steel havin-ff -l. therein, the holes being preierdirection of the length of the ridge, but this invention is-not limite-d all'instances Y torhaving the discharge orifices from the ridge elongated, although elongated orifices are consideredmore desirable. It willbe noticed herein that the top' sheets of the pile o sheets A are supported atan incline with relation to a horizontal plane, the particular means for supporting the said pilevheingillustrated in my appli- `cation, Serial No, 239,384,` filed January 3, 1905.

l the ridge with a'pressuregreater than thatoithe usual atmosphere.

Having fully described my invention,-what I claim as new and desire to secure byLetter's Patent is'b 1.' In paper-feeding mechanism, means to sustain a pile of sheets, a ridge having anl inclined side provided with 'a' series of separate interstces, means' to shove the'top sheets of the pile towardfsaidridge, means tov foice air through .said interstices yagainstl the under side of. Vthe ieadinglend of a sheet of paper leaving said pile and while being moved up said incline andmeans located within the ridge and\extverior to the` apex thereofyfor engaging the leading ends-of the sheets being\-iemoved separately from the pile. v'

' 2.' Inpaper-feeding mechanism, means to sustain 'a pile of sheets,. a ridge havingan inclined\`side provided with a series of 'in terstviees, means to shove tlile top sheets of the pile towardsaid ridge, and means to\f\orce air through said" interstices against the under side og the leading end of- ,a sheetof papell -leaying said 'pilef and while beingv mov'edfup said incline. Y

In paper-feeding mechanism, means tosustain apile of' sheets, a ridge' having an inclined side provided with ai `series of nterstices,. feeding means at the top' of said in-' `eline to engage the leading end oithe uppermost svheetof a pile of paper, a combing device hating on 'the uppermost l sheetof said pile to project it Aand others below it beyond the end ofnthe pile,` and 'meansrto force air against the' under sides of vthe leading endsy of the' sheets 'of paper leaving said plie and being moved up saidincline, the top sheet of'the' pile to be engaged by the feeding means.

In testimony whereef,.1 have sgned"`my nameto this specification, .in the presence of itvvo subscribing witnesses.

ARTHUR s. ALLEN.'

Witnessesc MARGARET'A. DUNN,

Bnm'na F. Huosnn.

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