US989555A - Web-guiding attachment for perforating-machines. - Google Patents

Description

J. S. BANOROFT & M. G.'INDAHL. WEB GRINDING ATTACHMENT FOR PERPORATING MAOHINES.

APPLICATION FILED 00121, 1910. I

Patented Apr. 18, 1-911. 7

2 SHEETS-BHBET 1 J. s. BANGROFT & M. 0. INDAHL.

WEB GRINDING ATTACHMENT FOR PERTORATING MACHINES.

Patented Apr. 18, 1911.

' 2A SEEETSSHEBT 2.

UNITED STATES I JOHN SELLERS BANCROFT AND MAUBIIZ C. INDAHL, OF PHILADELPHTA, PENNSYL VANIA, ASSIGNORS TO LANSTON MONOTYPE MACHINE COMPANY, OF PHILADEL- I'HIA, PENNSYLVANIA, A CORPORATION OF VIRGINIA.-

WEB-GUIDING ATTACHMENJL FOR PERFORATING-MACHINES.

'Pennsylvania, have invented certain new and useful Improvements in' Web-Guiding Attachments for Perforating-Machines; and we do hereby declare the following to be a full,'clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the figures and letters of reference marked thereon.

This invention. relates to means for guiding and controlling the delivery of a flexible web or strip to feeding devices and is specially designed for use in connectionv with pattern composing machines of the class illustrated in Patent No. 944,405, dated December 28, 1909, wherein the feeding mechanism'is provided with pin wheels registering with and engaging two parallel 1on gitudinally extending series of feed perforations in the web,- sa1d pin wheels being locatedwithin a b'ight of the web intermediate the supply roll and rewinding spool.

In order to more accurately posit-ion successive sections of the web in relation to the punches, the pin Wheels are located at opposite extremes of the series of punches and the feed perforations are arranged at short intervals in the length of the web. The perforations weaken the Web toisuch an extent that rupture of the material is liabletooccur N from either of two causes, z, e., excessive tension on the delivery side, or excess ve pressure by the pin wheels in overcoming the inertia ofthe supply roll at, the beginning of the feed movement, This defect or in the hygrometric conditions of the atmos phere whereby op osite edges of the "web are lengthened or s horte'ned unequally, with the result that the pressure exerted by the tensioning devices or of the pin wheels is directed main-1' if not exclusively, upon the shorter edge of the web.

The principal object of the present invention is to remedy this action and at the same time furnish guiding and controlling deviceswhich can readily be appliedto existing structures and, when, so applied, can

be manipulated so as not to interfere {with Specification of Letters Patent.

Application filed 0ctober21, 1910. Serial No. 588,330.

I the paper tower,

.4 of the housings;

spaced feed pins of the pin-wheels and, further, that the,

- punches, 'p in-wheel shaft andwinding spool 95 are provi Patented-Apr. 18, 1911.

specified in the appended claims.

In the annexed drawings illustrating a preferred form of embodiment-Figure 1 is a side elevation of a portion of-the pa er tower and strip feeding mechanism 0 pattern composing .machine with the improved web-g'uide applied thereto. Fig. 2

is a transverse vertical section through the punching devices and web guiding attachment, the latter shown in full lines in 'threading up position and in dotted lines in operating position. Fig. 3 is a top plan view of the web guiding devices; Fig. l is a perspec' live view of the attachment.

Corresponding numerals designate like parts' in the several figures. Y

Theperforating composing machine with which the improvements are shown associated is that of Patent N 0. 944,405, whereof 1 designates the side so called; with its spindle 3 resting in-open bearings which the end of the strip is attach ed; 6 the punches; 7 the diacylinder; wheels'of the feed mechanism, one at each end of the die-cylinder and concentric there with; and 9 the pin-wheel shaft.

It will sufiicefor present purposes to re I mark that the strip usually employed is of 90 paper, wound into roll form, and provided with two longitudinal series-of uniformly perforations for engaging the ed wit-h appropriate actuating de vices (see PatentNo. 944,405 whereby immediately at the conclusion of each punching. operation the pin-wheels are moved toadvance the strip a distance equal to the 10-9 interval between successive signals, and the winding spool is rotated to take up the slack and maintain ihestrip under tension on the delivery side ofthe pin-wheels.

Heretofore it has been to the pin wheels, but :as'the feeding motions of the latter,'a-lthough of limited extent are insertion of the supply roll and 55 whereof are 60 pieces or housings of 8' 2 thesupply roll.

5 the winding spool to 8 the pinthe practice tocon 10 6 duct the web directly 'fr'om' the supply roll i @Qeguall'y disti i'buted between opposite orations.

where. it is weakest.-

, supply roll overrun as the'result of'the feed movement communicated to it, or the pressure of the tensioning devices on the delivery side of the pin wheels be unduly large, the same tendency to rupture would exist unless a suflicient number of -pins were engaged at the time. Still another contributing, element in efiect-ing mutilation of the web at or by the feeding devices'i's the unequal ex. pension of the web resulting from variations 1'11 atmospheric conditions. When this 00 curs thelpressure of the feeding devices will rows of feed pe'r It is desirable,

' therefore not only that the pressure exerted by the pm wheels or other-feeding devices should be applied on as large a'portion of the web as possible but a so that means should be provided for maintaining such condition and for relieving the strain thrown i upon the web in starting the supply roll in wheels. A

85. v me'nft competent .or the purpose and which motion in response to the action of the pin- The purpose of the present invention is to overcome the defects and supply the deficiencies indic 'ed above5 and, in addition theretoyto so i l; a self-contained attachcan be applied to existing machines without changing the latter or in any way interfering with the insertionor-threading up of the strip, I

The added elements more directly coopers o sting with the feeding mechanism are a gravitatin-g brake'member or bar 10 engaging the per-'phe'ry oft-he -supp ly" roll to retard its motion; a compensatln take-u or tensioning. member 11 located within a b1 ht of the strip and operating. both-to. cushion the starting pull on the strip and to tension opposite edges thereof; and a combined guiding and frictional clamping member 12 engaglngthe strip at a point intermediate the compensating'take-up. and pin wheels and operating to maintain a uniform degree of contact between the strip and the, feeding pin-wheels, In the preferred form of embodiment illustrated these operating mem- "bers are inou .1 self-contained detachable fixture com-pristed upon or'incorporated into rnjg a vframe ;or housing formed by two substantially Lshaped sidepi-eces or plates 13 j preferably cut or struck from sheet metal; between-which are rigidly secured (as by headed-through bolts 14) two bars'or-cross pieces of which one,- -15, located near theou'terends of one branch of the frame serves associated pin-wheels 8,. wring one or both arms 17 is providedwith a stop 1'9 engaging the frame to lil'nit the outward movement of the braking member.

The tensioning member, in 'theform of rod 11, extends through openings 20 in the side pieces and is suspended a t-each-end upon one of two springs 21, whose opposite ends are secured tovears on the frame; Side pieces 13 are spaced-to freely enter between ousings 1 of the paper towenand each is I dimensioned to enter and be received between the endof the supply roll and the housing adjacent thereto. The lower ex-- tremities of side pieces 13 are slightly displaced laterally to engage the inner faces of the housing for positioning clamping member 12 in relation to the pin whjeels. Each side piece 13 is provided with a bracket 22' carrying aninwardly projecting stud or journal 23 adapted to enter one or the open latter'b'eing slightly shorter-than the interval bearings i for the supply roll spindle, the

between studs 23 so as'to leavea space in the outer end of each bearing 4,;for the reception of one'of said studs 23. v When in operative position thes'trip guid ing attachment is suspended by studs 23in bearings 4 at opposite ends' of'spindle 35' with clamping member'12 in proximity to die cylinder 7 and bar 10 aboveand resting upon the periphery of the supply roll. In this position counterweight 15 tends to rotate the attachment about its pivotal pointof support in a direction to advance clamping member 12 toward die-cylinder 7:, while bar 10, influenced V periphery of the supply roll and exerts a braking action proportional tbgits weight and the diameter of "the roll.- The strip or. web is drawn from beneath the supply roll and .passed over rod 11, tangent to the 'circmnferenoe of the pinwheels at a point slightly. above approxi-' mately coincident with the engaging-surface of cl amprng amber 12, wrouryd the die-f cylinder and associated by griwitypgngagefi the themin a ine;

tangent to'the hitte n'to the periphery of'the winding spool.

When the machine is nching and feed ing operations, clamgmg member'- 122., is ads,

vanced by counter-weight 15 to' iiold thei extended porting springs of bar 11, the latter w ll Iyield more or less until sufficient power has een accumulated to overcome the reslstance of the supply roll, after whichthe movement time inaugurated will be continued and com pleted through the medium of the power stored in'said springs, inasmuch as the power necessary to maintain the roll in motion is less .than that required to start it.

The braking and t-ensioning members 10 and 11 are arranged to act inopposition upon the attachment so thatthe pressures developed and tending to displace clamping member 12 will be'morc or less counterbalanced and thus prevented from interferin' urgith the action of counterweight 15. Thus in the example illustrated, the pull of the web upon bar '11 tending to swing the attachment in one-direction'is opposed by the-thrust of brake member 10 tending to shift the attachment in the opposite direction, the one supplementing and the other antagonizing the action of'c'ounterweight 15 in maintaining clamping member 12 in bold- I 'lng' position.

Tensioning member or rod 11 serves'the double urpose-of cushioning the blow of the feediii'g'devices by yielding under the action of the feeding devices and storing up power to complete the advance of the supply roll; and, also of .yielding'in different degrees at opposite cnds'so as to maintain the web in engagement with both pin wheels when opposite edges of the web are expanded or contracted unequally;

The construction of the attachment is such as notto in any manner interfere with the removal or-insertion of the sup 1y roll or thethreading up of the web; and it is adapt- .ed to'beapplied to existing machines with out. change therein or addition theretol The attachment is specially designed to facilitate-threading up the web, and with that end in view the several operating 'ele-' ments are so arrangedand disposed upon f the fixture that when the latter is swung in its sup orting bearings to a position cor-' respon mg to that illustrated by .full lines in Fig. 2 the end of the web can be carried {from the roll directly to the feeding mechanism a nd adj tfsted upon the'j. pin-wheels in the usual manner, after which by merely swinging the attachment as a-whole back to operating, position clamping member 12will .assume its position on top) gu d g and controllin therewith a self-contained web gaidin and 3 controllingnttachment the same inelu' 111g, :1;

frame pivotallysupported advance into contact with the web, tension-- ing member 11 will pick up a form its bight in the web, bra-king them-"r10 'ill of thefroll, and counter-weight 15 will be rought into sltion to maintain clampin'gmember'l in working en egement with the web all as'indicated by he full lines in Fig. 3.- Having thusflescribed our invention, what "we claim as new and desire to secure by LettersPatent of the United States is:-

1. A web feedin mechanism for record strip punching machines provided with sup, ply roll housings, a die cylinder and in 'wheel feedingdevices, and in combination therewith, a web guiding and controllingitt' tach'ment including a pivotelly supported {and counterweighted frame-car'ryin ,a; web clamping member opposedto the die cylin' der and pin-wheels, and aweb'tensidning member located intermediate said clam i'ng megiber and supply spool in the path 0 the we 2. A web feeding mechanism provided with supplyroll housings, and-'pmwheel 9 feeding devices and in combinat1onthere-- with 21 web guiding and controllin attachment including a eounterw'eighte fra e pivotally su ported to swing about; the axis ofthc supp y roll and provided with web clain'ipingend tensionin members, the one opposed to the pin whee sand the other 10- outed intermediate the. supply .roll and -clu1nping' member in the line of travel of the web.

SQA web feeding meclmnismfprovided with. supply ioll housings and a. pin wheel ,feed" and in combination therewith a selfcontained web guiding .and controllingnttachment includm "a frame pivotally supported to swing tween the supply roll. housings and provided withwebclamping and tensioning members and a supply roll bra-king member;

4. A web feeding mechanism eqhipped with supply roll. supporting housings, a die cylinder and; associated pin wheels and in combination tliiirewit-h a self-contained web fixture or attachment, the same i'comprising' a. counterweight ed frame 'pivotully supported to swing be; tween the supply roll housings about the nine of said roll and provided withfweb clamping web tensi'oning and supply spool braking members. t 5. A web feeding mechanism equipped with supply-roll housin s containing bear-- ing's for the su ply rol "spindle 'nnd pin wheel feeding vieesand in combination ven i n he. supply roll'--bearings and "id with" a supply roll braking}m'eInber;*a:*weli-tsnsipning member and a web clamping meniber 6. A web feeding mechanism provided with supply roll supporting housings and pin wheel feeding devices and in combination-therewith a self'contained web guiding and controlling attachmentor fixture including in w eel feeding devices and carr ing a bolamping member opposite the feeding deiicesa'nd a web tensioinng member-.in'ter late said ciamping member and titesupply roll. I I L TA web feeding- 'mechstnismprovided with supply rollsupporting housings and pin wheel feeding devices and in c0mbina tion'therewith a, movable self-contained Web guiding and controlling attachment comiising a frame equipped with web clam 2o 1 nnd tensioning members and a supp -y r0 1 braking member, said attachment being counterweight'ed to maintain its operative relation to the feedirigfl-efiices-zmd movable to uncover the latter fer tin-ending up the web.

8. In a web feeding mechanism equipped with asupply roll support and intermittently acting web feeding devices and in combination therewith a web guiding and.v controlling attachment including a movable frame carrying a web clampiiigineinber and a yleldable web tensiomng member. 9. In a web feeding mechanism equipped withsupply roll supporting and-web fecding means, and-in combination therewith a self-contained Web uiding and controlling attachment com' 'irislng movable frame. carrying web clamping and tensioning members and a supply roil braking member,

40 said frame being countnrweightcd to ad vance and hold its clamping, tcnsionmg and braking members in (F'PL'lili'iVQ relatioirtothe- 7 web feeding devices and" roll respectively and permitting withdrawal to release the roll and uncover the feeding devices.

' 10. A Web-feeding mechanism provided with "housings containing supply r011 bear ings and pin wheel web feeding devices, and in combination therewith a self-contained.

'-=con'nter\-weighted"web guiding and. control ,iing' attaohment provided 'with' sustaining pi'ifotsiadapted to engage the roll-bearings and to swing thereon between saidl-lumsings.

-11'. A self-contained guiding and cont-rolifiti' Iing'attachmentor fixture for a .wei pen iorating"mach1ne, the same comprising a.

a' framemovable relatively to thecounter-weighted "frame provided with sus pension pivots undweb clam mg, 'wciri tennal at or near t 1e junction of the two'arms.

cross ieces uniting corresponding arms of the site pieces, one-0f said ,cross-pn ces's'erving-as a web clamping member and the other as a counterweight therefor anda wet) tensio'ning member-bridging the interval between the side pieces and yieldingly sup ported upon the latter; a 14; A We!) guiding fixturjfor appiicg'ttion to punching machines such as d'escribed cm'nptising-thc following elements, in 'com' bination. to-wit; side plates enchpro-rided with a stud sup orting brackttii'o cross pieces interposed between and connecting the side plates at points remote fronifanjd on opposite sides of said studs; a brak "memher pivotally' supported upon one said cross-pieces; and a web te'nsibning member in the form of a rod confineda t-op iosite ends within hearings in. the pieces and suspended -i."rom the latter upon springs: 15. itself-contained web guiding attaclr men-t fon pnnching machines such as described, including the 'follo'win eleinents, to-wit;parallel side-pieces ea7c1f '-provid'ed with a bracket carrying an inwzgrdlybpro ject-ing stud; two cross-pieces interposedbe tween and secured to the. side pieces and located upon .relwtirely opposite sides ;of said stud; arms pivotally ipo'n one of said cross-pieces .a'ndf comile A (5d at qppositelend upon s'pri'ngs jf a ii cheiittot-he side pieces. I J

JOHN SELLERS BANCBQPW. 7

IMAURITZC; I NDAH'L I

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