US1443430A - Paper-feeding mechanism - Google Patents

Description

"Jan 30,1923

vA. OLGAY, PAPER FEEDING MECHANISML `4 SHEETS-SHEET l.

HLED MAY 5,1920.

J an. 30, 1923. Y

A. OLGAY. PAPERFEEDING MECHANISM.

' FILED MAY 5. 1920. 4 SHEETS-SHEET 2.

m14 @544| R' W W 'IN 4 Q 4 M4 ww' Iiimixmhisim Jan, 30, 1923.

Y l #Mezz @gygy paper fr'om-a pile. Devices for this purpose f Patented Jan. 30, 1923.l

UNITED STATES E l C E PATENT'O ALBERT OLGAY, OF CHICAGO, ILLINOIS, ASSIGNOR-TO GAW-OHARA ENVELOPE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

-IAPER-FEEDING MECHANISM.

Application led May 5, 1920. Serial No. 378,975.

Toall whom it may concer/rt:

y Beit known that I, ALBERT OLGAY, ,a German citizen, who have declared my intention of becoming a citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulv Improvements in Paper-Feeding Mechanism, of which the following is a specification.

My invention relates to paper handling devices for' feeding individual sheets' of have a Widerange of usefulness in connecchines.

tion with many different kinds 'of printing, v'perforating folding and AWrapping ma- One 'obje-ct of my linvei'ition is to s iml-plifythe mechanism necessary for' feeding the sheets.

,Another vobject is to provide. a mechanlsm capable ofibeing operated at a much greater speed than ithose at present in use without invention will become apparent as the dej, sacrificing ,either reliability or certainty of loperation. y

F urther objects land advantages of my inscriptie-n proceeds.`

In the accompanyingdrawings Figure 1 isl a side vieyvof a portion ofpaper4 hand Aling machine showing myimproved def vice in side elevation. 4Fig. 2 is an end elel ration of the' feedumechanism. Fig. 3 is a section on the line 3-3 of Fig. Figs. 4 ,and' arer detail sections of the, eccentric mountings for the shaft carrying the feed shoes .Fig-s. 6 and 7` are fragmentary sec- Fig. 10is a Idetail lsec-tion of the shoe and lected for illustration a. frame 10 adapted tions similar to Fig.A 3 illustrating two other stages in the operation -of the device. j. Fig. 34 is a detail view illustrating the mounting ofthe ribber end block. 9 is a detail of the feed shoe showing in section the adjustable mounting of the Hcontact` piece.

`Contact piece.y l

In the embodiment of my invention seto support any: kind of paper handling or printingzjlevice is equipped with plates 12' supporting my improved feedingr mecha- Lnism and the receiving means of the paper handlingl device to which the pieces of paper are to bedelive-red. The receiving means comprises in this insta'nce a set of .feed rollersA 14 mounted on a shaft lland, en-

gaging the surfaceof a vmoving belt 'I8v vwhich passes over a roller 20. The roller 2() may be adjusted vertically by -set screws 22 and clamped in adjusted position by set screws 24 to `vary the lgripping action of the belt and rollers on the paper handled. In-

asmuch as this adjustment is very slight I prefer to drive the shaft 16 from the shaft carrying roller 2 0, by a simple pair of gears 26'and 28. It is Wellknown that gears' havlng involute teeth m'ay be slightly separated from each lother Without V- destroying "thej proper intermeshing engagement of' the An `inclined lchute preferably comprising a bottom 30- and adjustable side. pieces 32 may be pivoted at 34 and supported at any desired .angle-by an' adjustable and extensible brace l36. The support for the pile of paper comprises the bottom of. this chute afnd frictio-n terminallblocks 38 preferably-`of .rubber of the grade known as mechanical 'rubben The latter are preferably'mounted 4to prolong the end-of the chute bottom at an angle slightly nearer'the horizontal. A

Aby Vthe threaded shank 48 on the'end of the bar 50 pivotallysupporting theroller 42. Suitable nuts 52 engage both sides of the -sha ft,44 for longitudinal adjustment of the bar 50. It Will be seen that the exact position of the roller 42 may be adjusted with precisionv toV any 4point in its plane and within the range of the adjustment pro` vided.

The blocks 38 are carried in supports 53l individually rotatable on a slee-ve 541splined on the shaft 56 rigidly `fastened in vertically adjustable blocks 55 at the ends of the mechanism. Set screyvs 59 may be used to clampthe 'blocks in adjusted position-lon' gitudinally 'ofshaft 56. The shaft 56 may also be suitably'adjusted and clamped in position byset screws 57. For rotary adjustment around the sleeve 54eacli support 53 carries a screw 62 meshing with worm teeth 65 formed in the sleeve. 'A suitable lock nut 67 may bei-employed to fasten the screw and thereby-"the block 38I in adjusted position. The stop wheel 42 and center block 38ar'e tobe adjusted so thatfa single sheet f material can slide over. the blockin contact with the stop roller' with a gentle sheets to slide down against the roller.

I have provided means for intermittently l engagingA the topmost i sheet of paper at either side of the rollerl 42 and moving it forward to be engaged4 by the belt 18 and rollers 14.. As illustrated, this means comprises oscillating feed shoes 58 located on either side of the roller 42 and cooperating ,Withgthe twooutside blocks 38. These feed shoes receive an oscillatory movement of rotation about the axis of the shaft 6() supporting them, and theshaft itself is also oscillated around a circle of very small diameter, the two movements vbeing superposed in such a way that the feed shoes will be lifted clear of the paper while. moving back to the' position shownn Fig. 3, and then by the oscillation of the shaft 60 forced into contact with-the paper as shown in Fig.

6, and rocked as shown in Fig. 7 while still in contact with the paper to carry the' topmost sheet into place between the belt 18 and rollers 14, and again lifted on the return stroke.

The connections I have illustrated for thus moving the feed shoes include a crank 63 carried by a rotating shaft 64 which for the present purposemay be considered a sourcey of power, a connecting link 66 and a longer crank 68 fastened to the-shaft 60 to rotate the same. The upper crank 68 being longer than the lower crank 6.2, it will be obvious that the lower crank may rotate continuously throughout a circle in one direction and operate the link 66 to rock the upper crank back and forth 4through a portion of a revolution only, thus imparting 'the desired rotation `to the feed shoes.

Asclearly illustrated in Figs. 4 and 5 leach end of the shaft is rotatably supported in a bushing 70, the outercylindrical surface of which is v,rotatably supported by a bearing 72 formed in thefsupporting framework and is 'eccentricto the inner surface engagingA the shaft 60. The eccentrics at, both ends ofthe machine are rotated at tion. `Obviously the width'of the arcuate interposed between, the parts. tion with' Ythe Vrubber surfaces :therefore connections such asl sprocket 'wheels 74 on' the two shafts and a connecting chain 76. To 'produce the requlred motion it w1ll be obvious that the positions of the crank 63 and eccentrics 70. must be properly synchronized.` Vithwthe linkage as laid outin the tric mounting is approximately directly upward as indicated in Fig. 3 whilethe shoe 'is rocked back by the crank 63 which extends approximately horizontally to the left- `drawings the displacement due to the ecceny and is therefore about one quarter of a revolution ahead of the eccentric'70. lVhen The feed shoes 58`shouldv preferably have y the portions engaging'the paper faced with v rubber. In Fig. 91 have illustrated -a rub ber facing 78 fastened tothe shoe atits ends by retaining plates 80, and an arcuate back.- ing plate S2 engaged by a plurality of set screws 84 passing through the outer arcuate portion'l of the shoe. This provides an additional means for precise adjustmentof the clearance and the resulting friction between the pieces of paper, the rubber blocks 38 and the rubber facing 7 8.-* The shoes 58 are formed with arcuate slots 86 which not only provide convenient. access to the set screws 84 but enable the roller shaft V16 tobe mounted in the .position shown, passing throughV thc slices without interfering with their ac# slots 86 must be the diameter-ofthe shaft 16 plus twice the arm of eccentric.70 plus-- -a reasonable allowance for'clearance.

" Fig. 3 the sheet of paper next the top overlies the sloping port-ion 88 of thej block 438 so that, its leading edge comes within the arc of contact between' the .face 78 of feed shoe v 58 and the block 38. The portion of thetop. vsheet therefore overlying the front' edgeof'the next sheet belowit represents a point.where'two*thicknesses of paper are VThe fric'- taken by the feed shoe on its next stroke.-

Devices according. to my invention are capable of feeding .individual pieces of paper at much higher speeds.- than heretofore possible. The lmechanism` employed comprises relatively few parts of relatively simple shapes and is reliable and durable in service. r

v lVhile I have illustrated and described in detail the preferred embodiment of my invention, it should be clearly understood that the disclosure is merely for purposeslof illustration and that many modifications and variations will naturally' occur to those skilled in the art. I aim in the subjoined claims to cover all such legitimate variations and modifications.

I claim as my invention:

. l. A sheet feeding device having, in combination, means for supporting a pile of sheets, adjustable friction shoes, means for moving said shoes to intermittently engage the upper surface of the ltopmost sheet and move it off the pile, and means operating on the sheets by engagement on opposite sides of their leading edges for preventing,

the removal of more Vthan one sheet at a time by said shoes, said -last mentioned means being operable separately fromA and not relying upon .the adjustment of said shoes.

2. A sheet feeding device having, in combination, means for supporting a pile of sheets, friction shoes adjustable relative to the pile of sheets on said support, means for moving said shoes to intermittently engagel the upper surface of the topmost sheet adjacent its edge and move it off the pile, and means operating above and below the leading edges of the topmost sheets to prevent displacement of more than one sheet from its position on the pile, said means being op erable separately from and not relying upon the precise adjustment of the shoes.

3. A sheet feeding device having, in combination, means for supporting a pile of sheets, friction means offering relatively slight resistance to a sliding movement of a single sheet off the top of said pile but a great resistance to' a sliding movement. of

" more than one sheet, and friction shoes movi izng intermittently finto engagement with the topmostsheet adjacent its edge to move said topmost sheet off the pile, said shoes being adjustable as to the degree of pressure which they exert vin engaging v said sheets. and said friction means being operable separately and not relying for its proper operation upon the operating adjustment of said shoes to attend to the feeding of the sheets separately. A

4. A sheet feeding device having, in combination, a shaft, a friction shoe carried said shaft, means for oscillating said shoe by oscillation and rotation of said shaft'.

and means for shifting said shoe into and out of contact with a sheet by displacement 0f said shaft,toivard andV away from said sheet.

5. In a sheet feeding device, in combination, a shaft, means for moving said shaft bodily in a clrcular orbit of small diameter.

and means for imparting oscillation and rotation to said shaft, said means being synchronized to produce a regular cycle of operation.

' 6. A sheet feeding device having, in combination, a contact shoe, means for rockingsaid contact shoe back and forth, means for lowering said. contact shoe on the forward stroke into contact with a sheet, means for raising .said shoe on the rearward stroke',

and means for positioning a fanned out pile of ysheets where the shoe will engage the leading edges of the sameon the forward stroke.

v T. A sheet feeding device having, in com'- bination, means for supporting a pile of sheets in staggered relation, means adjacent the leading edge of thetopmost sheetadap-ted to permit onlyv one sheet to slide'off said pile, yand means for intermittentlyv engaging t'he upper surface of the topmost sheet for sliding said sheet off the pile,` said second means being operable separately and not relying upon the manner of operation or adjustment of said third means. l

S. A sheet feeding device having` in combination, an inclined support for carrying a fanned out pile of sheets`r rubber friction elements underlying the edges of the uppermost sheets, a movable element cooperating Withone of said friction elements and spaced to allow only a single sheet to slide across its cooperatingfriction element, and friction shoes adapted to move intermittenti)v over ,cert-ain other of said underlying friction ele- .tion with the .sheets than the friction between the sheets and gauging meansy cooperating With said shoes and .inrleijmig elements to prevent the passage of more than 4one sheet.

past the same, and means for intermittently moving said shoes over said underlying elements to feed the single sheet past said means 10. A sheet feeding device having, in combination, an inclined support carrying av fannedout pile of sheets, stationary elements underlying 4the edges of .the uppermost sheets, movable elements, means for moving said movable elements past-said stationary elements with a clearance suflicient to ac commodate one sheet only, and separate means to prevent the passage into said clearance of more than one sheet.

11. A sheet feeding device having, in combination, an inclined support carrying a fanned out pile of sheets, stationary elements underlying `the edges of the uppermost sheets, gauging' means to cooperate with said stationary elements, movable elements,

' and means for moving said movable elements said movable elements past said stationary' elements with a clearance sufficient to'accommodat-e'one sheet only, means for positioning said sheets with the edge of'more than one sheet within the active area between said stationary and moving elements, and

means cooperating with said movable ele-` vments to permit the entry therebeneath of only asingle sheet.`

13. A sheet feeding device having, in combination, an vinclined support carrying a fanned out pile of sheets, stationary, elements underlying the' edges-of., the uppermost sheets, movable elements', means for moving said movable elements 'past said stationary elements' with a clearance suf- Iicient to accommodate one sheet only, means for positioning said sheets with the edge of more than lone sheet within the active areabetween said stationary Vand moving elements, and gaugingmeans operating in said area, said stationary` and moving elements having a greater coefficient of friction with ,l the sheets than the coeiiicient of friction be- ,j

tweentwo sheets.v l M 'A sheet feeding y device having, ,1n combination, an inclined support carrying a .fanned 4out pile of sheets, a novable gauging element and .amovable Ifriction feeding element operatlng on the edges'of sai'd sheets at tli'e top 'ofithe pile andengaging the topmostl sheet `where it overlis'- the edge of the sheet below it with a relatively heavy friction, the clearance between sald support and said gauging element being such that only a single sheet may lie between `them with a 'relatively light fricF .tional ngagement 15. A sheet' .feeding device having, `in combination, an inclined support carrying a fanned out pile of sheets, a movable frictionI gauging element and 'a movable friction feeding element operating on the edges of sai'd sheets at -the top of the pile 'and engaging the topmost sheet where it overlies -the edge of the sheet belowit with a relatively heavy friction, th'ecleara'nce ,between said support and said friction elements being such that a 4single sheet may lie between them with a relatively light frictional engagement, said friction elements having I' a greater coeflicientof -friction with the sheets than the coeffcientof friction between sheets. 1

16. A sheet feeding device having, in

combination, an inclinedsupport carrying,

a fanned out pile of sheets, friction feeding means including a movable friction gauging element and a movable friction feeding element operating on the ledges of said sheets at the top'of the pile and engaging the topmost sheet'where it overlies the edge of the sheet below it with a relatively heavy friction, the clearance between said friction elements being vsuch `that a single lsheet may lie between them with a relatively light frictional engagement. -said sheets tending to slide by gravity due tothe inclination of the support, said gauging means being adapted to fcheck the sliding action with a plurality ofsheetsin position to be engaged by said friction feeding element.

17. Aj sheet feeding T device having, in

combination, an inclined support carrying a fanned out .pile of sheets, said sheets tending to slide by reason of the inclination of said support, means for checkingthe sliding .action of the uppermost sheets at a delinite point, and #means for intermittently sliding the topmo'st sheet off the pile.

18. A paper feeding device having, in combination, meansintermittently engaging the topmost sheet of a pile of sheets to move it off the pile,'and a thickness gauge comprising frictional elements engaging theleadingedges of a plurality of sheets next the top of the pile and adjustable to positively prevent the feeding ofv` more than one shee-t'at atime.

19. A paper tentlyengaging the leading edgeof'the topfeeding device' "havin in* combination, a support` for? a 'fanne .outpile of sheets comprising an-inclin'edsupporting element and friction means` -forniing the portion lof, the .supporting element l ,engaging Qthe' leading edges of the"topmostl v4sheets ofthe pile, movable means intermit# l' mos sheet to remove it-oti` the sheets, and a thickness gauge operating to prevent withdrawal of more than one sheet at a time and also as a stop for the downward movement of the entire pile of sheets.

20,-Ay paper feeding device having, in combination, means intermittently engaging the tcpmost sheet of a pile of sheets to move it oit' the pile. and a thickness gauge comprising frictional elements engaging the leading edges of a plurality of sheets next the top ofthe pile.

21. A paper feeding device having, in combination, va support for a fanned out pile of sheets comprising an inclined supporting elementand friction means forming the portion of the supporting element engaging the underside of the leading edges of the topmost sheets of the pile, movable means intermittently engaging the leading,

edge of the topmost sheet to move it ofi' the sheets, anda member movable in the feedingstroke with said movable means as a sheet is fed therebeneath adapted to prevent more than one sheet from being fed.

22. A paper feeding device having, in combination, an inclined support, the front portion of said support having a relatively high coeflicient of friction, a rotatable friction gauging element positioned adjacent the front portion of thc support and spaced therefrom to permit withdrawal of a single sheet with very slight friction but to impose great frictional resistanceto 'movemen of more than one sheet at a. time, movable frictional means operating through a predetermined path to engage the leading edges of the topmost sheet of paper, and means for adjusting the leading portion of the support toward and away from the` path of said movable friction means.

23. A paper feeding device having, in

combination, an inclined support, the frontv portion' of s aid support having a relatively high coefiiclent of friction, a stationary friction roller positioned adjacent the front portion ofthe support and spaced there- .froln to permit withdrawal of a single sheet with very slight friction but to impose great frictional resistance to movement of more than one sheet at a time` movable frictional means operating through a predetermined path to intermittentl)v engage thc leading edges of the topmostsheet of paper, and means for adjusting the leading portion of the support outward from the path of said vmovable friction means.

stroke.

Q6. lIn a device of the character described, 'the combination of an operating shaft, an operated shaft, eccentric bearings for said operated shaft, a driving connection between said bearings and said operating shaft whereby said bearings rotate continuously, a crank on said operating shaft, a rocker member on said operated shaft, and means connecting said member and said crank whereby said member is oseillated.

A27. In a device of the character described, the combination of an operated shaft having its ends on veccentric members whereby the axis of the same is shiftable, rocker members on said shaft, a continuously rotated operating shaft and a driving connection between said shafts whereby to lcommunicate rotary movement to said eccentric members and rocking movement to said rocker members.

In testimony whereof, yI have hereunto set my hand.

ALBERT OLGAY.

Images