US1218861A - Feeding mechanism for paper or cardboard. - Google Patents

Description

c. H. HEYWQGD @L D. E. TRAVIS. FEDING MECHANlSM FOR PAPER 0R CARDBOAHD.

APPLICATION FILED MAR. 2s; 1908.

Patented Mar. 13, 1917 5 SHEETS-SHEET l.

m S e VQN iw M lf f o flieg/s.

C. H. HEYWOOD & D. E, TRAVIS. FEEDING MECH/msm Foa PAPER 0R CAHDBUAHD.

APPLICATION FILED MAR. 25. IQOS.

Patented Mar. 13, 1917.

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m for'ney C. H. HEYWOOD & D. E. TRAVIS. EEDING MECHANISM FOR PAPER 0R CAHDBOARD.

Patented Mar. 13, 1.917.

5 SHEETSMSHEET 4 Heywood, enzson 7510015; gli] www L" @kades/f APPLICATION FLE MAR. 2G. 190B.

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FEEDINGMECHAMSM Hm PAPER ne CARDBOARD.

APPUCM'QON HLED MAR. 2li, 1908.

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UNrrED sTAcrEs PATENT OFFICE.

CIABLEB H. HEYWOOD A N'D DENISON E. TRAVIS, OF WAUKEGA'N, ILLINOIS, ABBIGNOEB TO UNITED STATES ENVELOPE COMPANY, 0F SPRINGFIELD, MASSACHUSETTS, A

COBE'ORATION 0F MAIN E.

FEEDINQ KECHANISH FOB PAPER 0B CABDBOABD.

specmcanon af-Letters naar. Patented Mar, 13, 1917 Application-tiled Hatch 28, 1908. Serial No. 523,812.l

To all whom 'tmay concern.' l

Be it known that we, CHARLES H. HEY- woon and DENxsoN E. Travis, citizens of the United States, residing at Waukegan, in the county of Lake and State 'of Illinois,

have invented certain new and useful 1mprovements in Feeding Mechanism for Paper or Cardboard, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof. l

The object of our-present invention is to provide a mechanism for feeding sheets of paper, cardboard, or the like, to machines adapted to perform certain operations thereon, such, for example, as folding, cutting, slitting, orprinting. For the purpose of illustrating the construction and operation of a. feeding mechanism embodying curinvention, we have shown and described the same 1n connection with a printing press for printing envelop blanks, which are supvao lportedupon a feedin 4 table in apile or stack and individually fe t`o the cylinders of a ,rotary printing press. By means of ,the

'dnechanism embodying our invention the topxnost blank in the pile or stack isselected'and fed forward to the cylinders of the press, `and during its transit is gaged and brought into proper position or registration to receive the impressiomand these .results arc accomplished by certain novel features of construction and arrangement of parts as herelnafter'described and po-mted out in the annexed claims.

. Figui-e1 is a side elevation of a print? ingpress and mechanism f or :feeding en- 4velopblanks' thereto embodying our present invention, with'a portion shown in vertical longitudinal section on a plane indicated by the broken lin 1-1, Fig. 2. y

Fig. 2 is 'a,p an view of the same, certain parts beingbyoken away and shown in horizontal sectron.-

Fi .,3 is a partial end view as seen from the r1 ht with refereuceto Fig. 1, the type cylin er"a"portion 'of Vthe frame and other par A f the machine being removed and A parts shown i i vertical cross section.

wifi@ /igJ-A 41s la vertic 1 longitudmal section cn the line 4 4, g. 2

,\, ig. 5 is an enlarged sectional and `diagrammaticV view of the nipper and associated parts, illustrating the operation of the nippel'.

AFig. 6 is a plan view of the mechanism for picking up the blanks from a stack or pile and feeding them to the reciprocating carriage, and d Figs. 7 and S are diagrammatic `views showing respectively side and plan views of a modification of the feeding mechanism adapted to a stack of rectangular sheets.

Similar reference letters and figures refer to similar parts in the different views.

Although for the purpose of illustration our invention is shown and particularly described as embodied in a printing press, it is also applicable to other 'machines to which lblanks or sheets of paper or cardboard or similar material are to be fed.

Referring to the accompanying drawings 1 "denotes the framework 'of the. machine, in which is journaled a driving shaft 2, an impression cylinder 3, a type c linder 4, and a shaft 5 carrying a feed ro 1.6; The impression cylinder 3 is rotated by' a gear 7 mounted on the driving shaft 2 andengaging a gear.8, the gear 8 imparting rotary motion to the type cylinder 4 through a gear 9, as shown in Fig. 2. The feed roll 6 is driven by Vii""llrcnnecticn 'from a pulleyl l0 on the driving shaft 2, and runs in contact with an idle feed roller ll, located below' it in an opening in the bed l2.

Mounted upon vthe .framework of the inachinc at one end arevertical brackets 13, 13, for supporting that portion of the feeding mechanism which is employed to select the blank from a pile or stack and present it tothe feed rollers 6 and 11. The blanks tc be fed aire supported in a pile or stack 14 upon atable 15., to which an upward feedinginotion is impartedby a mechanlsm such as is in common use in envelop or other machines, but which is not herein shown or described, as 4it forms no part of our present invention.

That part of the feed'n mechanism supported by the brackets 1 13, is shown 1n plan view in 6 and in vertical sectional view in Fig. 1, and it consists of a rocking shaft 16 to which is attached a frame 1 7, comprisin arms 18 and 19 4provide with bearings or a tube 20, capab e of a s idih motion in the armsj18 and 19 `and connecte tion pickup,

l29 from the shaft 5 through the at its upper end by a flexible connection, not shown, with an air pump by which alr is periodically exhausted from the tube 20. The lower end 21 of the tube 20 is adapted to be brought into contact with the uppermost blank in the stack 14, and, when the air is exhausted from the tube 20, it forms a,suc so that when the tube is raised the uppermost blank is lifted from the stack in the manner common to suction pickups as they are now employed in envelop and printing machines.

Journaled in the brackets 13 is a rocking shaft 22 to which is clamped an arm 23, rovided at its free end with a slot 24 w ich incloscs a roll 25, carried by a block 26 which is clamped to the suction tube 20. In addition to the rocking shafts 16 and 22 the brackets 13 support a third rocking shaft 27, to which is clamped arms 28, 28, in the free 'ends of which is journaled a shaft 29 carrying rolls 30, 30, arranged to contact at proper intervals with idle rolls 31, carried upon'l stands attached to the framework of the lnachine upon opposite sides of the backflaps 32 of the envelop blanks, supported upon the feed table 15.

Rotary motion is imparted to the shaft 34 and 35, Fig. 6. The rocking sha t 16 carries a radial arm 36 which is operatively connected by a link 37 with a radial arm 38, carried upon one end of a rocking shaft 39. The opposite end of the rocking shaft 39 carries a radial arm 40, the free end of which is provided with a cam roll 41 actuated by a suitably shaped 'cam 42, carried upon the shaft of the impression cylinder 3. The rocking shaft 22 is provided with a radial arm 43, operatively connected by a link 44 and cam roll 45 with a cam 46 carried on the shaft of the impression cylinder 3, Fig. 2. T he rocking shafiL 27 carries a radial arm 47 connecterl by a link 48 with -a rocking arm 49, carrying a cam roll 50 which is actuated by a cam 51 o n the shaft of the impression cylinder 3. Cams 42, 46 and 51 are-single acting, and the motion of the rockingshafts 16, 22 and 27 are reversed by means of suitable springs applied there- V to, in the present instance, by torsional is swung to the right.

springs a2, 58 and 54.

By the rocking of the shaft 16 the suction tube 20 is given an angular movement forward and back between the positions shown in Fig. 1 and indicated by the broken lines 55, Fig. 1, anda vertically sliding movement is given to the suction tube 20 by means of the rocking shaft 22, which serves to carry the suction tube 20 downward into. contact with the uppermost blank as the suction tube is swung to the left in. Fig. l, and then an upward movement before the suction tube As the end of the suction tube is brought `into contact with the ears 33,

envelop blank air is exhausted therefrom, and a vacuum maintained untilthe tube has rreached the .extent of its forward angular movement, as .indicated by the broken lines 55, when the vacuum is broken to vrelease the envelop blank. l

The suction exerted by the tube 20 during its compound movement causes the backflap of the topmost envelop blank to be first raised from the stack and then carried forward from the position of the blanks, shown b a solidline 1n Fig. 6, to the position indicated by the broken line 56, Fig. When the upward and forward movement of the envelop blank has been effected, the shaft 27 is rocked to depress the rotating rolls 30, 30, against the end [laps of the envelo blank, which has been lifted by the upwe'r longitudinal movement and then drawn by the angular movement of the suction tube 20 between the rolls 30 and the idle rolls 31. The rotation of 'the rolls 30 project the envelop blank. forward between the feed rolls 6 and 11, which continue the movement 0f the blank over the bed 12 of the machine.

The bed 12 has a central opening and is spanned with parallel lon itudinal strips 57, which support the enve op blankin its forward movement. Beneath the central opening of the bed 12 is a reciprocating carriage 58, which is supported and guided by a horizontal rod 59, arranged len hwise of the machine and transversely to t e axes of the cylinders 3 and 4. The reciprocating carriage 58. is held from turning u on the 100 rod 59 by a lateral arm '60, provide with a roller 61 which is confined between horizontal guide ways 62. J ournaled in upwardly projectin ears on the carria e 58 is e transverse roc( shaft 63 rovide with arms 64, .105 to which are a'djusta ly attached gage stops (i5. The transverse rock shaft 63 carries an arm 66, which is provided with a roller 67 running on a cam shaped guide way 68, having an upward incline 69 at the end nea-rest 110 the impression cylinder 3.

A spring 7 0 holds the roller 67 against the guide way 68 and the adjustable gage stops 65 normally project above the longltudin l blank supporting strips 57. Journaled downwardly projecting ears on the reciproeating,r carriage 58 is a transverse rock sha-ft 71, upon which'are mounted a pair of arms' 72 called joggers. The rock shaft 71 car- 'ries an arm 73 which is provided with a |12o roller 74, held by a spring 75 against a cam shaped guideway 76, having a downward incline 77 at the end farthest from the impression cylinder 3.

A reciprocating movement is imparted to 125 the carriage 58 by a cam 78 4attached to the shaft of the type cylinder 4, and engaging with aroller 79 on one'a rm of a bell crank lever 80. The other arm of the bell crank lever 80 is provided with an adjustable 130 image1 roller 81, enga g one arm of a two armed lever 82h11 a tgdnnsverse rock shaft 83. The transverse rock shaft 83 is provided with an upwardly extended arm 84 connected at its u per endby a link 85 with the carriage .58.

. e cam 78 is single acting, and the motion of the carriage '58 is reversed by the action ofl a spring connected with one arm of the lever 82.' l j When the carrie e 58 'is at theend of its inovementnearest .e feed roller 6, the roller 7i passes downward over the incline 77, bi-iiigin'g the arm -73y and joggers 72 vinto the positions indicated by the broken lines 87 and 88, Fig. "1, and carrying the joggers low the supporting surface of the longitudinal. strips 57, to permit the envelop4 blank, as it is projected forward by the feed rollers 6 and 11, to pass over the oggers into position behind the gage stops 6 which are then in the position indicated .by the broken lines sa, Fig. i.

As thc carriage moves forward the roller 74 passes up the incline 77, thereby rocking the .shaft 71 ind swinging'tlie joggers for 'ward against the edge of the envelop blank to push it forward into contact with `the age stops 65, said stops and joggers having een ad'usted so that the normal space be `tween t ioni is substantially equalr to the width of the envelop blank at its points of contact with the gage stops and joggers. The continued movement of the carriage 58 slides the envelop blank along the'longtndinal supporting -strips 57, to hold it in pro er registration between the joggers 72 an the ge stops 65. As the carriage 58 reaches tgz end of its movement nearest the impression cylinder 3, the roller 67 rides upon the inclined surface 69 of the guide way 68, thereby rocking the shaft 63 and depressing the gage stops below the slip porting surface of the strips 57, bringing the gage stops into the position indicate by t e broken lines90, Fig. 1, in order to permit the continued feeding motion of the env lop blank over tlre'gage stops.

-T e continued feedin motion of the en'- velo4 blank is accomplished by a grippinlg -mec ianism arried by the impression cy inder Esami3 comprising a grippi-n face 91 formed at or adjacent 'to one of t e longitudinal edges of the tympan face of the cylvindex', andf'a pivoted nipper 92 coacting with the gri ping face 91 to seize the advancin bgthe envelopyblank. A rocking sha t 98.- joii'rnaled in the cylinder 3 parallel witits axis and projecting therefrom -througli one of the cylinder heads. The

.- rockin shaft 93 is provided near its inner fend with a radial arm 94, and atits outerA end it carries a two Varmed right angled lever 95, having one of its armsparallel with the radial arm 94 carried by the inner end of the rocking`shaft93.

j cated bythe broken lines 89; andthe i U 4In the 'radial arm94andthe pdrallel 'arm of the lever 95 is journaled a shaft 96 parallel with the rocking shaft 93. The shaftI 96 is provided at its outer end with an arm 97,

andfat/itsf inner end and on opposite sidesofthe rajdial arm 94 with ment gears 98. One end of the nipper 92 .is orked to inclose Jthe sides of the radial arm 94. The forked end of the nipper" is 'pivoted to the radial iii-m 94, and upon eachI side thereof is provided with gear teeth 99 concentric withits pivot and engaging'segment gears 98, as

shown in Figs. t and 5.` ()ne arm of the two armed lever 95 is provided with a roller 100, which is yieldingly held by af` spring 101, connecting said lever witli'the adjacent cylinder head, against the ,peripheral face of a stationary cani 10'2, fixed upon a sleeve which forms the joiirnalboxl of the cylinder 3, as shown in'Fig. 2. Similarly, theiirm 97 is provided withA a roller 103, which is yieldingly held by aspring 104 against a station* ary cam 105, vheld'by the sleeve of the journal bo! of the cylinder 3.

The driving connections of the carriage 58 are adjusted to advance the envelop blank at a speed corresponding with the peripheral speed of the im ression cylinder 3; The gage stops 65 an joggers 72move forward with the envelop blank when iti'is gripped by the nippel- 92, and during the depression of the' gage stops into the position shown by the broken lines 90, Fig. 1, the joggers are moved forward into the position indicatgd by the broken lines 106, Fig. 1. The movements of the carriage 58 'and the im ressiofi cylinder 3 are so timed, that thepiorward edge of an envelop blank advancing with the carriage passes under grip ing face 91 of the impression cylinder?? amilover the nipper 92, as shown in Fig. 5.

The roller 100 inpassing to the .larger part o the cum 102 swings the arm 941A backward, and carries the nipper underneath the advancing pro/site the gripping face 91. The roller 103 1n passin from the smaller to the larger.

part vof te cam 105 swings the'nippei' in-` ard and grips. the envelop blank againstl te face 91 and, as the gage sto s 65havc`.

movement. When thc carriage is reversedv the gage stops 65 assume the position indi- 'ossee 72 assume the position indicated by4 t e broken lines 87 and 88, allowin l succeeding blank to be receive from the feed rollers Gand 11.

The complete feeding-motion of the en-v` our distinct stagesr velop blank comprises frbm the smaller" envelop blank op.

soY

ion

the next first, .the selection and p'resenta'tV `of, (he/,j

blank to the feed rollers 6 andil .j 'second/Q" from the pick-up intermittently b the projection of the blank forward over the reciprocating carriage by the feed rollers 6 and 11; third, tlie advance movement of theA the envelop blank over the reciprocating cnr- Y riage g the mechanism of the third lstage continuesthe forwardmovement of the envelop blank and, during its period of movement, brings it into registration with the gage stops 65 and in position for subsequent' operation upon the envelop blank.

Various changes in the details of construction and inthe arrangement of parts may be made vto adapt the mechanism to-difl'erent machines for various purposes, without departing from the principle and intended scipe of our invention.

. n Figs. 7 and 8 I have shown a slight modification in the arrangement of the mechanism for the first stage of the feeding movement, by which it is adapted for feeding square sheets. In the modified form shown in dia ranimatic view in Figs. 7 and 8 the idle ro ls 31, which are arranged on opposite sides of the stack 14, are exchan d for a continuous roll 107 which is place in frontv of the stack 108 of square sheets.

Swinging feed rolls 109 are'carried upon separate shafts 110', 111, driven with imiforin rotation from opposite sides of the machine, thereby forming a gap between the rolls 109 for the swinging movement of the suction tube 20. A

The suction tube 20, as used in machines of this class, is Aterined a pickup or a suction ickup, as its principal function is to engage y suction the uppermost blank in the-stack and to lift it from the stack in position to be moved forward by the feeding mecha-l nism. This suction pickup is providediit its lower end with a inouth'adapted to -foim an air tight joint when it is ressed in close contact' with the blank.v Air is exhausted the action of an air pump having a flexib e connection with the pick-up, 'and when the vacuum is broken the blank becomes released from the end of the pick-up. We have not shown in detail the construction of the pick-up or 'its connected air pump, as these features are in common use and their construction and operation will .be understood by those conversantwithtliis class of machines.

1. In a feeding nicrliiinisni of the kind specified, moans for su )porting the blank to be fed, a suction pirciip adapted to engage tlul forward edge of said blank, a constantly operating blank 'forwurdin and a pair of normally separated ro ls interposed in the paitli of said blank between said constantly operating forwarding means and the edge of said blank, means for operating said pukiip to engage tlie blank and to deposit it between tlu` separated rolls of said pair, and iiiezins for thereafter bringin Said rolls together to feed the blank to sai coiistantl operating forwarding means.

2. fin n mechanism of tlie kind specified, means for supporting tlie blank to be fed, a suction pickup adapted to engage the forward edge of said blank, pairs of normally means,

separated rolls on each side of said pickup y and in advance of tlie forward edge of said blankmeans for operating said pickup to carry tlie edge of the blank, b the exertion of a tensileI strain on the bla'nli between the separated rolls of said pairs, and means for thereafter bringing tlie rolls of said pairs together to continue the forward movement of said blank.

3. lIn a feedin mechanism of the kind specified, means or supporting a blank to be fed, :i suction pickup adapted to engage the blank :it its extreme forward oint, pairs of feed rolls disposed rearwardly of the point of engagement 4of said pickup and iii advance of tliewiongitudinally alined portions of the for 1rd edge of said blank, and means for ving said .icku forwardly, whereby tl'i-l forward e( ge oi] said blank is drawn into the biglit of said feed rolls by the exertion of a tensile strain on the blank.

4. In a feeding mechanism of the kindv 5. In a feeding mechanism of the kind specified, a support for the material to be fed, a rocking shaft above said support, a Swingin frame carried by said shaft, a snction pic up slidable in said frame, a second A rocking shaft, an arm carried by said second shaft with its free end engaging said pickup to impart an up and down .movement thereto in said frame, a eonn11on.ca1n shatt for consaid roeking shafts, two pairs of normally Separated feed rolls havine their axes located in a vertical plane behind the mouth ot' sa-id suction pickup and upon opposite sides of the plane ot' i si movement, and means for bringing said rollstogethe' at the end ot' the swinging movement oi' said pickup.

li. ln an envelop machine. a blank feeding meehanism i-,omprising the following instrumenta|ties:-a positively engaging constantly operating lorul'ardimgr means, a snction pickup adapted to engage the forward edge or' the blank, and a. pair ot' normally lseparated rolls in the path otsaid blank between its edge and said constantly oper-- atingforwarding means, means for opertrolling the` rocking movement of both of.

ating said pickup to carry the blank into a.

position to be operated upon by said rolls when they arebrought together, means for releasing said blank fr0m id pickup, and means for thereafter bril said rolls together to project the bianli into theconstantly operating orwajding means. y

7. .ln a feeding mechanism of the kind specilied,` a support for the material to be fed, a movable sue-tion pickup adapted to engage the-material near one of its edges,

pairs of feed rolls located on opposite sidesV Jol-IN E. Rea-imola.

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