US1019295A - Strip-feeding mechanism. - Google Patents

Description

W. fH. BAZLEY. STRI-1D I'EEDING MEGHANISM. APPLIOATION FILED APR. 25, 1911.

Patented Mar. 5, 1912.

Zw/062225024' @Mmm y@ (397% y am, @WDM .gtneky W. H. BAZLEY.

STRIP FEEDING MBGHANISM.

APPLIUATION FILED APR. 25, 1911.

1,019,295. Patented M1115, 1912.

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Patented Mar. 5, 1912.

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To all whom it may concern:

UNITED. iOL'FFICEf wIiiLiaiu n; BAzLEY, or Evniu'ir'i, MASSACHUSETTS, A's'sreiroa *i'oirLYmoN mm i rncrunme c'oMPaNY, or nos'roN, uassaciiusn'rrs, 'A conron'arioir ory STRIP-Emili@ Mmmm. i

' .miniemen inea april a5, ien. serial-iro. 623,319.

'Specification of Letter'slateiiti- I h5, v1.912,

.Be it known that I, WILLIAM Baziiar,

a citizen -of the United States, residing at Everett, in the county of Middlesex, State of Massachusetts, have invented a certain new and useful Improvement in Strip-Feeding Mechanisms, of which the following isv a specification, reference being had therein to the accompanying drawings. c

In machines of various kinds operating. upon sheet-material in a strip of appreciable Y length, such as is'called in general terms, a

continuous strip, and employing feed-rolls for advancing lthe stri for the purpose. of being operated'upon, t ere often is ex erienced a marked tendency on the part o they strip to work edgewise toward one sideor the other of the desired'path. ,Various arrangements of edge-guides have been employed for the purpose of keepingthe strip in its proper path, b t they are not always effective, and the same is true with respect to other means intended to prevent the strip from swerving. In classes of Work requiring accuracy of register in' the case of the strip, lateral swerving of-the latter results in bad and imperfect work and consequent loss. The crowding of an edge of the strip against a lateral guide crushes or breaks such edge in the case of some materials,lsuch as, paper, and also causes cutting of the guide. Sometimes jamming of the strip .and clogging of the machine occur, with V breakage of the-strip in some cases. Hence,

stoppages of the machine are occasioned, and time is lost while the trouble is being rectified, the 'output of the machinebeing considerably reduced thereby. I have in 'practice experienced these difficulties in the lfeeding of strips of paper, and similar diiiicultiesinthe eeding'of stripscof: sheet- The general objects of my invention are to overcome the tendency aforesaid, and to obviate the difficulties, vinconveniencies', and

loss resulting therefrom, while at the same time my aim is'to attain theseobjects -i'nan entirely simple and practical manner.

s The invention consists, essentially, int-he combination with feedfrolls,` of means for periodically varying vthe distance between the axes of the rolls to thereby release the strip which is passing between their," peripheries for brief intervals from theA grasp and control of the-feed-rolls. The temporary release of stripallowsit'to edgewise back to 'its normal path-whenever itshalll have become diverted therefrom, the

normal path being that` whicliis determined bythe means designed to `control andguide the strip asit is fed *along .Infmiy maA es are chines alread inl use special side-gui provided'to etermiiie such path 'In vsome machines, the parts which operate upon thev strip" possess the capacity o r function o'f edgejguides, in additionA to other special capacity or function, and Vtherefore consti# tute edge-guiding means. In'either case, it

`being assumed that -inyinvention .is Aembodied in a given machine, if thestri'p which. is being operated u n in such machine worksedgewisein eit er direetion'while the feed-rolls' are closed together and rotatingto feed the s trip,.so as thereby to create an edgewise tension in the strip, the movingapart off the axes of the feedfro11s,with itsattend'antrelief of the grasp ofthe vfeedrolls upon the strip, leaves the stri to readjust itself, which it iminediatei; do, recovering its normal path A-'machin'e having applied thereto anv em- It will of course l'be understood that the.

freeA will' Abodiinent of my invention 'willoperate with?" .out interruption from lateral swerving of temporary release of the strip bythe movin fartherA apart of the axes of the feed.

ro ls is so timed that it will not interfere 'with the special functions of the machine.'

l Theprinci'ples o f the invention may be embodied in-a variety of ways. The draw? ings show one mode Vof applying the said rinciples in connection wit which the feed in intermittent, andl al-sopoi'ie mode of applying them in connection withcontinuous y-operatin feed-rolls.

In the drawings, ligure 1 shows certain portions of a machinel employin yfeed-rolls which are rotated .intermitting y, andl an embodiment of theiprinciples of the invention applied in connection with such feedrolls, the parts bein viewed -from'one side of the machine, any certain portions bein broken away. Fig'. 2: Shows the partso Fig.` 1 lviewed from the left-hand side in Fig. 1. Fig. 3 is a plan ofethe said parts. Fig. 4 a view in section in theplane of line 4, '4,' of Figs. 2 and. Fi 5,4 Sheet 1,

'is a 4plan viewA of the feed-ro separating and its 'transversely-projecting 110 a machine inv as I' neousl'y, the feed-rolls, printing or emboss- ATin. Fig,` is a sideview of the said rock-` shaft. Fl'g. 7j 1s a view 1nsection on line 7, 7,` o fFigs. 5 and 6. Fig. 8 is 1a sideview of ,an embodiment of the invention in connection with continuously rotating feedrolls. Fig. 9 is a yplan of theparts shown in f Fig. 8,`the guides between the two pairs of feed-rolls being omitted.

Having reference to the drawings,-The .machine fofLFigs. 1 to 7 is `constructed to v feed along a strip `a`of material, print or `emboss the same at intervals, and-'punch `.therefrom disk-,shaped portions bearing the imprints. A machine ofthe type of that partlyshown inthe said gures 1s adapted for the production of articles of various n kinds. I have utilized'the said machine in -t-he manufacture of disk-shaped bottle-stop- ,cooperation with .the punch, a stationary iWork-support 8 which sup orts the strip* pers of paper'materials.V It comprises in -itsfConstruction, among other parts and fea- :y tures unnecessary to be illustrated and dewhile being acted upon by he printing or embossing dies 5,. 5, a strip-.conducting guide `9 extending from the feed-rolls to the printv ing or'embossing devices, and yielding edgeguides'lO, .10, 10, Fig. 1. The machine is built jto.op era te upon-two strips simultaingv dies, punch -and die, strip-guide, `and yielding.edge-guides, being duplicated at thel opposite sides thereof, 'as shown. The 4'0 of the,` machine are fixed upon a shafta,

lower feed-rolls, 3, 3, at the respective sides which-extends transversely of the machine and is mounted in bearing-stands, 3b, 3", proin the said bearing-stands'. The upperfeedvrolls are pressed with yielding forcetoward :the lower feed-rolls by meansof expanding y between l} lates Qd-and'the said boxes, the

A -je'cting'froin the stationary machine-frame. 945

*.ash'aft 22,',which 'at its oppositeends 1s .The upper feed-rolls2, 2, are mounted upon mounted in boxes 2"2, itted inguideways spiral springs 2, the latter being confined said plates being`engaged byfadjusting screws 2e, 2e, working in threaded holes that are tapped-in the caps 2f, 2f, of the said :guideways By turning the said adjusting screws thetension` of the springs, and the Aforce with which the -upper feed-rolls are pressed toward the lower feed-rolls, may be 2g, to prevent accidental loss of adjustment..

`varied in well-known manner. The adjusting'l screws are furnished wlth lock-nuts 2g,

.The feed-rolls are operatedA tofeed the strip a by means o'f a' swinging armic and intermittent clutch-devices of anyisuitable' chareach other.

acter. The said arm is mounted to swing concentrically with the shaft 3, and the clutch-devices referred to include the disk or wheel 3d fast on the said shaft. Swinging movement is imparted to. -the said arm 8 at the proper times in the working of the machine through suitable actuating connections including a motion-transmitting link 3e, Fig. 2, which is pivotally engaged with the said arm at 3f. In consequence of such swingingmovement of the arm, the clutchdevices rotate the shaft 3 and lower feedroll, and the upper feed-roll is rotated from the lower one.v In thepresent instance the two feed-rolls of a pair are geared together by means of spur-gears 2", 3X', meshing with The feeding movement of the feed-rolls takes place at a time while. the head 4 is elevated. Such movement operates to advance the strip (1. through the strip-conducting guide 9, and over the work-support 8 and die 7. .The strip-conducting guide 9 is ,U-shapedin cross-section, its bend constitutinga back ,orl inner edge-guide for the strip a, toward and against which the strip is' pressed through tlie engagement of the yielding edge- guides 10, 10, with the front orouter edge of the strip. The acting portions of the said yielding edge-guides 10,

10, being pressed outward somewhat beyond their normal position by thewidth of the strip, their tendency to return to their' normal position causes them to press against -the outer or front edge of the strip so as to bear the strip widthwise against the bend of the conducting guide, and againstthe lip 9, Fig. et, at the innen edge of the work-support, constituting acontinnation of the bend of the conducting guide.

In the operation-of the, Darts thus far described, the strip is fed step by step to the printing or embossing dies and the punch. and diemI The extent of each feed movement is s uicient to feed successive portions of the strip a first td'the'l'irst printing or embossing die, thenV to the second, and then' to the punch vand die, which last punch outy in the form of a disk each portion which has been operated upon by the two printing or 'embossing diesin succession.'

The parts thus far described, are not in themselves of the gistv of the present invention.

Referringnow more particularlyto the .invention itself and the embodiment of the same which isshown in Figs. 1*to 7, 11 is a small rocksh'aft which is mounted in bearings formed in the upright portion 'of a bearing-stand 3b. This rockshaft is located below the' .box 2".which is contained Within the guideway ofI such bearing-stand. It is formed with a cam-portion 11a. In the present instance the said cam-portion is produced by slabbingY titfor, cutting away the intermediate portion of the length of the rocks'haft, namely that portion which is immediately lneneathA the box. A wear-plate 11", Fig. 1 is placed between the box and the cam-'portion 1 1". Normally the rockshaft occupies a position in which the depressed surface of the vcut away portion thereof is presented to the wear-plate land box 2", permitting the box toassume .its lowest position under. the 4action of the `spring 2 and the upper feed-roll to press the strip a against the lowerfeed-roll, so that the strip is gripped between the feed-rolls and when movement is given to the feed-rolls itis fed forward thereby.

A turning movement of the rockshaft will cause the eccentrically-disposed port-ion or cam of the rockshaft to act against the .wear- 11" extending transversely therefrom, and

plate ait the under side of the box 2" to raise the latter and theshaft 2* and feed-roll 2, separating the feed-rolls so as to relieve the grasp or biteof the latter upon'the strip a, leaving it free to readjust itself to its' normal path in case ithas swerved therefrom.

The rocking movement of the rockshaft 11 is provided forin the. resent instance by furnishing the said roc shaftwith a pin mounting a striker 11c upon the head 4. The pressure of the box 2* against the camportion o 'therockshaft 11 tends to @ook the said rockshaft until the fiat face of the same and the bot-toni .of the box are parallel and in contact. This holds the said pin in horizontal position.4 The striker-piece 11 'is fixed to the head 4 in such position that as the head descends it strikes against the said-pin, pressing the latter down and rockl "ing the rockshaft so that the feed-rolls are separated from each other in the manner already described. The extent ofthe separating movement is very small, being merely suiiicient to release the grasp of the feed-rolls upon the strip a., and notgreat enough to take the 'teeth of the spur-gears 2", 3", out of mesh withy one another. As-

the head 4 rises, relieving the pressure of the striker against the pin 1.1",- the roc-kshaft is permitted to turn reversely under the pressure of the spring 2, transmitted through box 2b and wear-plate 2d, and'acting against an eccentric portion of the rockshaft I 11. This reverse turning of the rockshaft allows the upper feed-roll to close down upon the strip a, and also restores the said construction shown in F igs. l, 2, 3 and 4, the roll-separating devices are duplicated in comection 'with the respective pairs of feedro ls.

In the mechanism illustrated in Figs. 8 and 9, the strip a passes through twopairs of continuously-rotating feed- rolls 21, 31, and 22, 32, on itsV way to the fixed guide 9. The upper and lower rolls of each of the spur-gears 2", 3",

In the said parts are geared together by 'means of and the rolls are actuated from a rotating shaft 13 by means of a sprocket-wheel 13?L fixedfon said shaft, a

sprocket-chain 13" *passing around said sprocket-wheel'and also around a sprocket- Wheel 13' fixed Ion the shaft 21a of one of the upper feed-rolls, a second sprocketwheel 13d i'xed on the latter shaft, and a sprocket-chain 13'? passing` around such sprocket-wheel and also around 'a sprocket-4 wheel 13 ixedonthe shatt'21a of the other upper feed-roll... `Separating.movement .of

the'eed-rolls of each pair, for the purposes of the invention, provided for by mountingthe shafts 31@323 of the lower feedrolls in vertically-movable boxes 31", 32", which are acted upon by springs tending to 'press the lower l feedrolls toward Vand against the upper feed-rolls. -The respec.v

tive pairs of' feed-rolls are alternately,

opened or separated for the said purposes, by meansl of rockers 31232?, which are pivoted'at 31d, 31d, and 32d, 32, and a rotating 'cam 32e having a prominent'portion or nose which engages `.the rochers alternately. The

said cam is fixed upon an upright shaft 32 that is geared by bevel gear-wheels 32K, 32g, to the shaft 13. *.As the projection or nose acts upon each of the rockers in turn, it rocks the rocker s as to depress the boxes of the corresponding lower feed-roll against the resistance of4 their springs, to thereby separate the -corresponding pair of feedrolls. As the projection or'nose passes out of engagement `{vit-h a rocker, the said springs press 'the said boxes, the lower feedroll, and the rockerbackinto their former positions. In the operation of a machine having `this embodiment of the invention applied thereto, the opening apartof the pair of feed-rolls next to the guide 9 permits any edgewise tension which may have been developed inthe strip-to act to spring the strip edgewise toward its normal path, the action taking place between the edgeguides of the machine and extending as far as to the outer pair of feed-rolls which are still closed together. When the pair of feed-rolls which were thus opened apart are closed together and the other pair are' opened apart, the self-adjusting act-ion of the strip is permitted tot'ake place between the pair first mentioned and the source of supply. Between the two pairs of feed-rolls upper and lower conducting guides 33, 34, are located, between which the strip passes,

and by which it is controlled vertically..

These gliides are omitted from Fig. 9.

I claim as mv invention:

1. In strip .eding mechanism, the combination wit feed-rolls which advance a strip of mat al, and means actin to conne said str within a given pa widthwise and pr loo .ucing lateral tension in the strip adjacenttlie rolls in case of lateral divergence 'of thel strip from the said path, of means for periodically varying the distance 7between the axes of the rolls and thereby 5 releasing the strip from the bite of the roll,

whereby .said tension is permitted to restore the strip to its proper'path.

2. Instrip-feeding'mechanism, the com- `bination With feed-rolls which advance a 10 strip of material, and edge-guides act-ing t0 conine said strip within a given path Width- Wise and producing lateral tension in the strip adjacent the rolls in case of lateral divergence of the st-rip from the said path, of

15 means for periodically varying the distance 3. In strip-feeding mechanism, the combination with feed-rolls which advance a strip ofl material, and sprin -actuated edgeguides acting to confine sai strip Within a given path; Widthwise and producing lateral tension in the strip adjacent the rolls in case of lateral divergence of the strip from thesaid path, of means for periodically Varying the distance between the axes of the rolls and thereby releasing the strip from the bite of therolls, whereby said tension is permitted to restore the strip to its proper path. l

In testimony whereof I aiix my signature in presence of two Witnesses. A

- `WILLIAM H. BAIZLEY. Vl/'itnessesr` CHAS. F. RANDALL,

NATHAN B. DAY.

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