US2391265A - Paper roll supporting rack - Google Patents

Description

18, 1945. V PALMER I I 2,391,265

PAPER ROLL SUPPORTING RACK Filed Jan. 25, 1944 3 Sheets-Sheet 1 'Zebmmzfazma;

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Dec. 18, 1945. M R I 2,391,265

PAPER ROLL SUPPORTING RACK Filed Jan. 25, 1944 s Sheets-Sheet 2 a4 .76 96 .55 as g a if; 99W

Dec. 18, 1945. PALMER 7 2,391,265

PAPER ROLL SUPPO RTING RACK- Filed Jan. 25, 1944 s Sheets-Sheet a Patented Dec. 18, 1945 Edward PalmenColumbus, Ohio, assignorto Ohio Wax Paper Company, Columbus, Ohio, a corporation of Ohio Application January25, 19'44,'Serial No. 519,615

(Claims; 01. 242-68) This-invention relates to "apparatus for "supporting paper rolls and, moreparticularly, to an improved back rack by means of which paper is withdrawn from one or more rotatably supported rol1s-for advancement to' associated cutting,

printing or coating machines;

'In the operation of ciitting machines; particularly, paper is-withdrawn' from a plurality of frame-carried rota-table rolls and fed to a cutting; instrumentality .-=in which a plurality of lengths of the withdrawn paper are cut into sheets-of desired dimensions. At present, the paper-rolls are supported on frame-journaled shafts or arbors which extend completely through axial openings provided in the paper rolls,-each shaftor arbor being provided'with adjustable chucks by which the rolls are-mainta'inedin desired longitudinal positions Fur-' ther, frictional brake devices are'provided which engage each' of theshafts to control their rotational speeds and 'to apply tension 'to'the lengths of paper withdrawn from the rolls. -In the operation of such roll-supporting racks, which-are now generally used on all cutting, printing 'or processing machines in which paper is fed to the machines fromrevoluble' rolls, considerable dif-- ficu1tyis'-encountered in properly centering the rollscn their supporting shafts or arbors and in applying uniform braking pressures to each of the shafts lor arbors'so that the-paper may be fed in an accurate manner into the associated machine under conditions of; uniform tension and without wrinkling or creasing. Frequently,-

the frictional brake shoes-"are" not uniformly I tightened. Even skilled machine operators find it diflicultto'provide'a uniform braking action on each shaft 'or arbor so that lengths of paper withdrawn from multiple rolls will be under uniform t'ension.- In cutting machines, such lengths ofpaper in superposed layers are fed througha rotary cutter. should vary;- the stretch and contraction of the paper will result in producing cut-sheets which lack uniformity in dimensions.

sheets through 'atrimmingmachine, wherein-an- As a result, it isnow customary after initially cutting the paper' withdrawn from rolls into sheets; to pass the cut '40 If the tension on the paper other cutting operation "is performed to provide I sheets which are exactly of the same length.-

In accordance with the present invention, I provide a back rack'forthe support of paper rolls inwhich the ,rolls are each subjected to a' uniform degree of tension as well as the lengths ofpaper withdrawn therefrom, so that the initial sheet-cutting. operation will produce. paper sheets of precisely the same dimensions and thereby eliminate the time and costs involved in the presentlyemployed sheet-trimming or secondary cutting operation. I

It is an ob ect of the invention-to providea.

It is another object of the invention to provide aroll-supporting back rack in which the relatively adjustable side frames are provided with journals adapted for the rotatable support of- V stud shafts or arbors which, instead of extending completely through I the paper rolls, engage merely with the end" portions of said rolls,-

whereby to provide facility and convenience in mounting the rolls on or removing the same from 1 their supporting arbors and inadapting the back rack to paper rolls of varying lengths.

vide a back rack in which certain of therotatably mounted stud shafts or arbors'have the outer ends thereof engaged with spring pressed thrust bearings, thalatter having threaded adjusting means so that desired rotation-retarding forces or pressuresmay be'applied to the shafts or arbors engaged withsaid bearings, whereby to provide tensioningforces-to the. lengths of paper withdrawn from each of the rolls and eliminating the use of the customary frictional band brake devices hitherto employed in this connection.

For a further understanding of the invention, reference is to be had to the following description and the accompanying drawings, wherein:

Fig. 1 is a side elevational view of a multiple Fig. 2;

Fig. 6 is a vertical sectional view on the plane indicated by the 1ine'VIVI of Fig. 5;

It isa further object of the invention to proec i hebeams :o ;-;th stati nar fram meme Fig. 7 is a similar view on the plane disclosed by the line VII-VII of Fig. 5.

Referring more particularly to the drawings, the numeral 18 designates my improved back rack in its entirety. In the specific embodiment herein illustrated and described, the back rack is adapted for use in supporting aplurality of Paper @11 15 9112 1 QK Q QQ 951 Q Paper may be i draw m l s a d. fed intoa cuttingmachine, not shown, in which the paper is out into sheets of desired dimensions, However, it will be understood at this juncture that the paper roll supporting meghagrismcgm prising the present invention may be employed usefully in connection with any other type of; machine, such as printing or coating machines in which one or more paper rolls are revolubly supported and paper advanced the, form of a. traveling web into engagement with various processing or printing devices.

.When. used. in nnection a Qp tine ma: ch ne mai moyed eads. eads qomnr e stati. ar tram m rnh.

.d. ad stab e rame. member-1.

o tbese rame he sma comprise paral el. umen .d 9. bea s. .3.: whi h. r idly: united. by. ve tical. pri hts. k taprq uce a s bstantially rectan l r. stoic: um, .Beneaththa r me m mbeli rare ait fangad IMEYIQISQBQ extendin b he. mem en t1. mount d umnthe ir ers t w member I: is adius ably ndented irders or. mot m htlqn itudina lm t e ect toward. and way: rom. he. stationa y. member; ll... Wher kzse to; adapt. the; .cls. to. n nenmllsharing. difi renklenathsr order to. effect;-. .19

he. rotatable; support... dig a; l ty qfaoap r .Qlls Utin Qohnection,with,- hae; Ur havelmountedwnithein upper urfacesa slur-Mil y. q stationary: bea in boxes... I L- Each.

o .sthese xesrasrshowaine t e. 4,.is .forruect a inalhg x endin bore 5 which is.

s daply. moon 9; i izinedrwitnlatnreadectaxial borefiflswhicha ec iresthethreade shank ofianedi st n i mwt 2!: .A1 ..Q-,. eaQh-shaft l qzhasitseouterewall:formed i withia lgngitud-inally,extending. slot; orrecesss2-22 50'= in-which .is; positioned zo-neenduofg -a.se.t; screws 23,: the latter;beingethreadedly carriediby.the bearingc boxes ll; asshowncin Fi 2; bhe.1,Set:SCreWS--2 3v serving.toepreventnrotation- 0i the...shafts laibut to..atlmit:of:theirsslidingz adjustment. in the-bores: 65*

I8. The... outer end-10f: each. of. the-boxesc lcflsiss threadedaasiat z fl for theireceptionl of: aninternallyl. threaded; collar: 25,; each of the. latter. carryingva. bearingssleeye .26sin..which-. the. outer: unthreaded portion of\the.-.screw-..2l is rotatably ce ved, A collar-.25! :is. pinned; as .at; ZBson. the... unthreaded portion- 0 ,.zeach.of thelscrews -.21., and a manipulating wheelz29g is;.-.pimned as at. 39.: to the outer end of each ,ofiethmscrewp; 21.. The... ollar. 1.": of eachscrzew; and---the.--.hub-.o2 each. of he wh lsz e aeases fi i ie nd0fizthefiiatefiz bearing sleeve 26 to confine the screw for rota-r tiQ butto'permit longitudinal movementthereof.

It will be manifest that when a wheel 29 is. I'Or-.. tated; thescrew 21 associated therewith. by-virtue of its. threaded? engagement-with the. .borev lflsof. s the associated: shaft I I9; willicauselthetlatter to moveibacki and; fortlrv m.- the. bearing bore; I8.

. d ononeitudinali add u tmentr 4s;

ait? ore-arbor; L9. Each shaft;

rically reduced or shouldered, as at 3|, for the rotatable reception of a roll-holding chuck 32.

The opposite or adjustable frame member 12 has the upper surfaces of its beams l3 provided with adjustable bearing boxes 33. As shown more particularly in Figs. 2 and 3, each of the bOXes 33 has its under side grooved as at 34 for the reception of the upper web of the adjusting beam [3.

under: side of each bearing box 33,: is provided with guide cleats 35 by means of which the boxes 33 are retained in connection with the upper webs of the beams I3 but are permitted toslide longitudinally thereon. Each of the boxes 33 is provided with a longitudinally extending bore 35; in which is positioned a tubular bearinglining 35f, slidably mounted in each of the linings 36 is a rotatable stud shaft or arbor 31-, the latter: being adapted for longitudinal alignment with complemental shafts or arlbors Iii carried by the bearing boxes IT. The inner end. t. Qt. the. stu 1 is eduee in diame er as: at; .8. and;v i longitudinally, rooved. as a itortbe r ceptio f: a-o zfl Carried it arelleen esinachu s on ucksi a h ba 2 rotation of, the; roll, l.fi,, rot,ating movement; will be imparted to the.- stud Smite-.31 Theouten ndof each: 6f the; shaf s 1 is. con calls; tapered at;42, for: en agement. with a thru t. h aling f. an antiefr-ictio type. The. outepshell fl of each of; the,--bea;ring;s-43i is. can-- riedgonth n er en of; ongit d n l y adilsii a le mem p 5mm;- threaded shank. 0t. which, passes. looselythnouuh. arr. opening 46. formed in a bail; member 4l, ane.- of the latter. beins pivotally mounted at.4&-. oneach. ot. the beari e ies 33w, A oil.;,spring,= 49. surrounds: each. of. the. scre ember 45. and; confined.- tw n;..the: te r w b oi he ssocia d: il: 41 d thash ll-lliq ha hmstsbearina e Th tah= f: he; sc ew; members, 55 s.- 99 V545 .wlthini herthreaded huh-boretof a hand. heel h nringAB-Iendsto.forcethe-thmst 43, into, engagement; with the; comically; taperedy end loathe comulemet-ltal-shaftsa and the; pr ss c. exerc sed; by thev sprin 8: n this; ard eularbl i st diP tim;-. he.-.- po t nssot ha e wh e -ewf ndtsz erewem mberi 45.. Ba

1 hand wheeh 502-111 :a; clockwise; direcethe springs. ssoc ated.therewithrmastb '2 litfi mrd eengfiging thevbearin i fi=l rems h shafnend 1s. R Em zts t htiibai-lx lle o swms about 'ts n otalnnountinafid. and-to.- substanti ally upri minpfiitiontherein-8:. allow ng he; assoeiateds sh iti 31-1 and. s; chucks 41, to ;be r thdrawn fsom n a ement with-a he- Rewa ds 11 simi arlxrthee omnlemental. wheel za n say be operatedsto m ve itseassociatedsshait. am mnu werd et enithus;w thdrswmsgitsi- K gagem -ent with thefaxiabonenw I .B tfli'PfiRfl'ffi'filla fiyys chumeanss he e ssmayr be rerolnb u-m n ckimtheebacks eels e mom nieet rj remissredstiierefroiz r.

ioz dfii str amrl f-rthe bearine zboxes -.33e1ensi:- wlinellr ofi thelsf amermsmberr heebea-msr l 3;;

its

ccent .csean eposit mi di mrectarrguiamne in ss 53 es ed nzestensioml;54:proiectingiri idlye (M ndi. atemllx from-.e elriofitheboxes; Elie eccentrics flecarry threaderhmaniipulatingerodsa 55 which :providedorthe 1 convenienti-rot'atiomofv the-eccentrics 1.5 21 orderztoiadjustctheoperatinge positions-1 of the. boxes: 331-: their pp in The inner end ofeaehiofi-the shaftsJ Qiis diametm streams;l3aprovidingrfoncoaxiat registration-of the;

that when the plunger or plungers 69 are ered, the teeth thereof engage with those of the inner-" endsi'erthemes sszmav befthreaded' for 7 reception in internally threaded bores 56 prosvide'd' in -the= ec'centric s. When the eccentrics have. been rotated to secure the desired adjustment yor their associated-i bearing boxes 33, the rods 55 maybe 'rotated}until their inner ends come 1 intofrictional engagement with the studs 5|, thus maintaining th'e adjustment of the e centrics. 111

While the longitudinal .adj'ustabilityx' of -the shafts ZOFand 31' compensate forminor variations in the length ofpaperrolls, and enable the chucks 32- and M to properly and securely engage the :ends 1 of the 5 paper "rolls mounted thereon, nevertheless, such'adjustment of the roll shafts oranbors does-not 'provide for major-variations in 'lngth of the various. paper rolls which machines ofthis kind ar'e required to carry. 1 For example, certain paperrolls may possess a length of approximately 12---inches, while others .may possess lengths of from '36 to 48 incheswith various gradationsin length .therebetween. Therefore use is. made of the adjustable frame memberiIZ which may be movedeback and :forth' on thitransverse bed girders l5 to meet 'theiconditionszin roll length encountered. T

Toiprovide :for the-convenient adjustment of the frame mem ber l2,-.-the. latter is provided over each=of .thegirders l51with a rigid, horizontally and laterally extending channel member51, as shownmo'rei particularly in Figs. 5, 6 and 7. Each of these channel members at the ends thereof are provided with roller shafts 58 carrying spaced rollers 59, the latter engaging with wear-absorbing strips 60 aflixed to the upper surfaces of the girders [5. Between the strips 60, thegirders have their upper surfaces provided with linear rack teeth 6| with which are engaged pinions 62. mounted on a pinion shaft 63, said shaft at its ends being journaled atopenings provided in the side flanges of the channel members 51.' The ends of the shaft 63 are equipped with gears 64,

which mesh with pinions 65 fixed for rotation on studs 66 projecting from brackets 67 carried by the sides ofv the channel members 51. The pinions 65 are formed to rotate with hand-wheels 68, also carried by the studs 66. By rotating the wheel 68,, the pinions 62 are revolved, causing longitudinal travel of the adjustable frame member l2 on the girders l5, the rollers 59 facilitating this operation.

To retain the adjustment of the frame member l2 in any of its operating positions, I employ locking plungers 69. These plungers are slidably mounted for vertical movement in guides 1 I carried by the uprights M of the frame H. The lower ends of the plunger 69 are formed with teeth complemental to those of the rack 6|, so

low-

rack 6| to hold the'frame member l2 against major movement. However, to finally lock the frame member l2 in its adjusted positions, use is made of a rotatably mounted eccentric 12, which, as shown in Figs. 5 and '7, are positioned to engage the upper surfaces of the channel members 51. These'eccentrics are carried by a longitudinally extending shaft 13 which is adapted to be manually rocked, as by use of the lever arm 14, shown in Fig. 1.

The outer ends of the shaft 13 are received within openings provided in a vertically movable bar 75, the latter being slidably guided by brackets 16 secured-to the sides of the channel members '51.: .The lower ends of the bars:i'l5 carry studs-"11," each of which receives airoller 18'." -It will be manifest. thatby rocking the shaft 15, the

, eccentrics 12 carried. thereby may be rotated .to

effect the elevation" of thebar-.15 inorder to bring the rolls 18 into firm frictional en agement with the under surfaces of the top webs of; the girders l5. This secondary clamping means serves'to stabilizethe frame member l2 and to prevent undesired shifting movement on the part thereof when in1a finallyadjusted operative position. In view of the foregoing, itwill be seen that my present invention provides-a back rack forsupporting one or more. paper rolls in connection with a. cutting; printing-orcoating machinein which paper is fed from a rolland advanced in one or more webs. through such machines. In the present invention, each ported by a longitudinally aligned pair of stud shafts or arbors having end engagement only with-the paper roll carried thereby, thus eliminating the 'longarbor shafts heretofore employed inpaper-holding back racks which are difficult and awkward tohandle and which deflectlongi+ tudinally under theweight .of the heavy paper rolls supported thereon. Further, in my present construction of the invention, the paper rolls are uniformly tensioned by the employment of the coil springs "49, said springs displacing the frictional brake devices of the prior art and enableeach roll to be so held that. paper webs beingiremoved therefrom will be under uniform jlongitudinally. directed ten.- sioning forces. It is because of this construction primarily that with the use of the back rack forming the present invention, I am enabled to cut'the paper lengths or webs withdrawn from the rolls in multiple order into sheets of uniform length, eliminating the necessity for re-cutting or trimming the edges of such initially cut sheets in order to secure dimensional accuracy. By the provision of the adjustable frame member, the back rack is readily adapted to paper rollsof any commercial length and, concomitantly therewith, secure both convenience and time saving in the matter of mounting or dismounting the paper with the rack. Further, the machine is such that when paper is being withdrawn from the several rolls, minor adjustments may be found desirable to effect exacting registration of their webs, such adjustment being performed while the machine is in active operation by the manipulation of the hand controls described.

While I have described a preferred form of the present invention, nevertheless, it will be understood that the same is subject to considerable variation or mechanical modification without departing from its essential nature nor the scope of the following claims.

I claim:

1. In a paper roll supporting rack, a frame, a pair of spaced longitudinally alignable bearings carried by said frame, a rotatable arbor mounted in one of said bearings for longitudinal sliding movement therein, a paper roll engaging chuck carried by said arbor for rotation in unison therewith, a normally stationary non-rotatable arbor carried by the other of said bearings, said stationary arbor having one end thereof formed with a bearing extension for the rotatable reception of a roll-engaging chuck and with an annular shoulder disposed for frictional engagement with said last-named chuck, and spring means acting on the'rotatable arbor and serving to move the same rolls in connection ,paper roll is sup;-

longitudinally and the paper roll engaged therewith, whereby to maintain said last-named chuck in frictional engagement with. the: annular shoulder of the stationary arbor.. o

2, In a rack for" rotatablysupporting spirally wound paper rolls, a frame, a bearing on. said irame, an arbor rotatably and slidably mounted in said bearing, said arbor being sonically pointed at one end, a pivotally mounted bail having an opening vformed therein, a threaded rod. loosely positioned for sliding adjustmentin the opening provided in said bail, an antifriction bearing carried by one end of said rod and adapted for engagement with the sonically pointed end of said arbor acoil spring surrounding said rod and positioned between said bailand said antiiriction bearing, and a nut carried by the threaded shank of said rod and .cooperative withsaid bail to: con- 13:01 the expansion and contraction of said spring. 3'; Rack mechanism for supporting spirally wound rolls or web material comprising a pair of parallel relatively spaced frame. members. a pair of spaced longitudinally alignable bearingscarried by said frame members; a rotatable arbor mounted in one of said bearings for longitudinal sliding movement therein, a roll-engaging chuck arranged at one end of saidarbor for rotation in unison therewith, a normally stationary nonrotatable arbor carried by the other of said bearings, said stationary arbor having one end thereof formed with a bearing extension and an annular shoulder, a second roll-engaging chuck rotatably mounted on said extension in engagement with said shoulder, a yoke pivotallymounted ediment to said rotatable arbonathreaded stemadiustably carried; by said yoke, a thrust-receiving; bearing mounted on. oneend of said. stem for engagement with the outer end of said rotatable. arbor, spring means carried by said: yoke and. surrounding said stem for maintainingsaidythrust bearing in engagement with said rotatable arbor, and means for adjusting vsaid stem relative to said yoke to regulate the action of said spring means-.3 M

4. Back mechanism for supporting spirally wound rolls of web material, comprising. a pair of spaced f I me members, a pair oflongitudinally alignable: hearings on said frame members, an arbor rotatably mounted .in one of said bearings for sliding movement therein, a. normally stationary non-rotatable arbor carried. by the other of said bearings; the inner ends of said arbors being adapted for axial supporting. engagement with a roll of 'web material. arranged therebetween, a pivotally mounted adjacent to said rotatable arbor, a threaded stem adjustably carried by said bail, a thrust-receiving hearing mountedbon one end of said stem for engagement withthe outer end of said rotatable arbor, spring means carried by said yoke and surrounding said stem for maintaining said thrust bearing in'resilient engagement with said rotatable arbor, and a nut adjustably mounted on. the outer end of said stem engageable with said bail for regulating the tension on said spring means.

EDWARD PALMER.

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