US948548A

US948548A - Web-manipulating mechanism.

Info

Publication number: US948548A
Application number: US4237001A
Authority: US
Inventors: Joseph P Knapp; George E Pancoast
Original assignee: AMERICAN LITHOGRAPHIC CO
Current assignee: AMERICAN LITHOGRAPHIC CO
Priority date: 1901-01-07
Filing date: 1901-01-07
Publication date: 1910-02-08
Anticipated expiration: 1927-02-08

Description

J. P. KNAPP 8: G. E. PANGOAST.

WEB MANIPULATING MECHANISM.

APPLICATION FILED JAN. 7, 1901 Patented Feb. 8, 1910.

4 SHEETS-SHEET 1.

INVENTOR 5 0.

' ATTORNEY w WM JQM WITNESSES: a?! KW y ,6 MM

J. P. KNAPP & G. E. PANGOAST. WEB MANIPULATING MEGHANISM.

APPLICATION FILED JAN. 7, 1901. 948,548. Patented Feb. 8, 1910.

4 SHEETS-SHEET '2.

MVENTOM WITNESSES ATTORNEYS J. P. KNAPP & G. E. PANGQAST. v

WEB MANIPULATING MECHANISM.

APPLICATION IILED JAE. 7, 1901. w 948,548. Patented Feb. 3, 1910.

4 SHEETS-SHEET 4.

JOSEPH I. KNAPP, OF NEW Y ORK, AND GEORGE'E. PANCO AST, OF- BROOKLYN, NEW

YORK, ASSIGNORS T0 NEW YORK.

WEBQMANIPULA TING MECHANISM.

Brooklyn, in the county ofKings and 'State.

of New York, have inventedcertain' new and useful Improvements in.-Web-Manip1 1 lating Mechanism, of which the following is.

a specification.

This invention relates to mechanism for manipulating paper or similar fabric in web form, and more particularly to mechanism for feeding the web to web-manipulating machines having continuously moving cylindrical web-forwarding surfaces.

Heretofore great difliculties have been experienced in feeding the web to machines of the class referred to, and especially to those machines in which the web forwarding surfaces make unbroken pressure contact with the web and continuously operate in such contact, as they do, for example, in the rotary planographic printing machine invented by George E. Pancoast and made the sub ject of a co-pending application'for a patent filed January 29, 1900, Serial No. 3170. The difficulties are mainly due to the lack of uniformity in the fabric as it comes from the manufacturer. While the texture and condition of the fabric forming a web are usually uniform'lengthwise of the web, they are almost universally not uniform widthwise of the web. For example, While the weight or dampness of the fabric forming one side of the web are uniform throughout the length of the Web, they are not the same as the weight ordampness of the fabric forming the central part of the web or the other side thereof. This results in an inequality in the length of the web at different parts of its width, which inequality persists and is usually uniform throughout the length of the web. This inequality in the length of the web at different parts of its width, seriously interferes with the travel of the web through the machine, in that the extra material in the longer parts of the web tend to accumulate in advance of the web-forwarding surfaces, with the result that those parts of the web tend to gather into wrinkles and pass through the machine in a wrinkled condition. If the inequalities in the different parts of the web Specification of Letters Patent. Patented F eb, 8 1910 Application filed January 7, 1190!.

Serial No. 42,37Q.'

- .7 {UNITED STATES PATENT OFFICE .ummcan nxrnoemmo COMPANY, A CORPORATION or are excessive, ;or-if the web-forwarding sur- I faces make wrinkles will themanipulation of. a Web may beovercome. .We have found that a defective web may be smoothly machine having cylindrical web-forwarding surfaces by so varying the tension, or the length, of the manipulated part of the Web locally with relation to its width so as to compensate for or remove the inequalities in the ength of the said part of the web at different parts of its width. It usually happens that the irregularities in the fabric of the web widthwise thereof, and the resultant inequalities in the length of the web at different parts of its width, vary more or less uniformly from one side of the web to the other, so that if the web were laid out evenly on a plane surface, it would not extend in a straight line but in the arc of a circle, the degree of the curvature of which would depend on the width of the web and the difference in the length of the two sides thereof. When it is attempted to feed such a' web by a pair of cylindrical rollers in the ordlnary way, the web tends to creep laterally out of its path to the rollers, and if this is prevented, the long side of the web tends to accumulate in advance of the rollers and pass through them in the form of wrinkles. We have found that such a web may .be fed evenly through the rollers by merely varying the tension on the two sides of the Web. If the tension on the short side of the web is made greater than that on the longer side of the web, the short side of the web will be slightly retarded so that it will not pass through the rollers as fast as the long side of the web, and if the tension on the two sides is properly adjusted, the difference in the speed at which the two sides of the web travel through the rollers is made equal to the difference in the length of the two sides. This retardation of the web due to the in crease in tension thereof may be due to a slight slipping of the rollers upon the web, or it may be due to the fact that the web is stretched by the tension applied thereto and is passed through the rollers in a stretched unbroken pressure contact, I form and they are apt to increase 1n-s1ze and in extentuntil the feed I I a mechanism whereby these difficulties inv fed to "and" passed through a N i condition, or the result may be due to a ,co 'mbination of these conditions. It frequently however, that the irregularities in ha s thgfzb ric of the web widthwise thereof, and

the resultant inequalities in the len h of the web at different parts of the widt do not vary uniformly from one side of the web to the other. For example, one or both edges of a web may be longer or shorter than the central portion thereof, or there may be a loose or baggy streak or a tight streak ened by the application of heat to those parts, or, if the web is heated throughout its width, by the application of more heat to the 10 can be increased locally by a local application of moisture, or by e application of more moisture locally if it is dampened throughout its width, or the shorter parts of the web may be stretched, 'either permanently or temporarily, by increasing the strain on those parts with or without the application of moisture to the web locally or otherwise. Where the inequalities in the len of the web at different parts of its wi th are excessive, an or all of the above methods of manipulating the web may be combined to effect the desired result.

The accompanying drawings, which are referred to herein and form a part hereof, illustrate an apparatus constructed in accordance with our invention and adapted to car out the above described methods of manipulating the web, which methods form the subject matter of another a lication filed by us simultaneously herewit Serial Number 42369.

Of these drawings Figure 1 represents a longitudinal section of a web-feeding mechamsm adapted to carry out our method as ap lied to the rinting press forming the su matter of the application referred to, the press being diagrammatically shown; Fig. 2 is a side elevation of the feed mechanism detached; Fig. 3 is a top .planview of the same; Fi 4 is a front elevation of a damping mec anism employed in the aparatus' Fig. 5 is a section of the same on ine (II- b, Fig. 4; Fig. 6 is a sectional view on the line cd, Fig. 5; Fig. 7 is a detail, Figs. 8 and 9 are diagrammatic views illustrating the application of the invention to a web which more or less uniformly varies in len fromone side to the other. Figs. 10 an 11 are similar views illustratin an improved. form of the apparatus; and igs. 12, 13 and 14 are detail views of features of a modified form of apparatus.

plied rom a roll 7, an

nger parts. The length of the web Referring now" to the drawings in detail,.1 represents the frame of a multi-color printing press which comprises in the main the lar impression drum 2, a series of relative small printingcyli'nders 3, and a series 0 inking and dampi mechanisms 4 and 5'respect1vely, one set fi ir each printing cylinder 3.

6 re r'esents a web of (paper which is supis directed to and around drum 2 between each of the printing cylinders 3, and then to a suitable delivery mechanism not shown. In the ress shown the printing cylinders 3 and the rum 2 are circumferentially continuous and work together continuously in whole surface pressure contact. The web 6 is thus given no chance to free itself should it be imperfectly fed to the drum and become disarran in passing around the same.

hile our apparatus is particularly useful in connection with the press of the type shown, it may be advantageously used with other web-manipulating machines havin cylindrical webforwardin surfaces an particularly those in whic the web-forwardin surfaces make pressure contact with each 0t er.

The web-feeding apparatus shown comprises a carriage consisting of a base portion 8 and an upper rtion 9 in which the web roll 7 is mount The base 8 is preferabl mounted on rollers, so that it may be readi y moved into and out of operative position with relation to the press. lrVhen in operative position the carriage is adjustabl held against movement b the stops 10 11. T e upper art 9 o the carriage is adjustably mount upon the base 8, for a purpose hereinafter ex lained. As shown the carriage 9 is pivote at one side to the base, as by a pin 12, and is adjustably connected at the opposite side to the base, as by lever 13, which is pivoted at its lower end to the base 8 and o ratively connected to the frame 9 by a'lin 14. The lever 13 may be locked invarious ositions by means of a slotted link 15, whic is pivoted at one end to the frame 9 and adjustably connected to thelever 13 by a clamp 16. By manipulating the lever 13, the axis of the roll 7 may be set at any desired angle with relation to a the axes of the web-forwarding surfaces in.

"lcoinprisinga pair of

re ers

21 and 22, then under-the

rollers

23, 24 and 25, and then between a roller 26 and the drum 2. The

tension rollers

21 and 22 are mounted in a frame 27 which is centered with-the roller 21 and rendered adjustable by means of a worm wheel 28 and a worm shaft 29. The

rollers

21 and 22 are held against rotation, so that b turning the frame 27 on its axis more or ess of the surface of the web will be brought in contact with the rollers and its tension varied.

For the urpose of dampenin the web a roller 30, aving a coverlng of a suitable absorbent material is arranged opposite the\ roller 20 and reliably held in contact therewith by means of the spring pressed rods 31. For the purpose of sup lying moisture to the roller 30, a water ountain 32 is arranged adjacent to the roller. This fountain may be of any suitable construction. As shown it comprises an inclosing casing 32 in which is mounted a rotary brush 33. A suitable blade or bar 34 is adjustably mounted in the casing 32, so that it can be made to bear more or less upon the surface of the brush on the side thereof adjacent to the roller 30. The brush may be rotated by any suitable means, as by a belt 35 which asses over a pulley 36 on the shaft of the rush and a pulley 37 on the shaft of the guide roller 20. When the roller 33 is revolved the blade 34 will cause the bristles of the brush to throw a spray of water in the direction of the roller 30. For the purpose of regulating the supply of water to the roller 30, any suitable means may be employed. The means shown for this purpose comprises a flexible screen or curtain 38, to the lower edge of which a series of adjustable bars 39 are connected. The bars 39 may be raised or lowered to vary the supply of water to roller 30, or cut it off entirely by any suitable means, those shown consisting of the hand levers 40. In order to avoid shar angles in the o ening of the curtain 38 an to insure a gra ual variation in the suppl of moisture to the roller 30, the lower ed ge of the curtain is provided with suitable stiffening means, as a coiled spring 41, which is connected to the lower ends of the rods 39 by elongated connections, as 42. By this construction the formation of sharp angles at the points where the rods 39 are connected to the lower edge of the curtain is avoided.

\Vhen a web of paper in the machine is found to be unequal in length at different parts of its width, the shorter parts can be stretched or elongated so as to make the web substantially uniform in length by properly adjusting the opening in the fountain so as to apply the rlght amount of moisture to the shorter part or parts of the web. In the case of a web which varies in length more or less uniformly from one side to the other, we have found that the web may be made to pass smoothly into the press by so manipu lating the upper part 9 of the carriage that the end of the roll 7 upon which the web is longest 1s farthest from the press and at the same time shiftin the roll longitudinally toward the end which is shortest. In performing these operations it is only necessary to keep shifting the roll 7 in the "directions referred to until the web passes smoothly into the machine at the proper place later ally thereof. .If in feeding a web to the press it cannot be made to run smoothly by means of these adjustments, it is because it does not vary in length uniformly from one side to the other. In such a case it is necessary to resort to the damping operation, or its equivalent, in order to make the variations in the length of the web at different parts of its width uniform, or substantially so. The rinciples upon which the described ad ustments of the roll 7 act to produce the desired results can best be explained by a reference to the diagrams in Fi s. 8 and 9. In these diagrams the course of the web from the supply roll 7 to the first printing roll is developed or laid out in a lane, the positions of the various guide rolls 1n the course of the web being indicated and numbered as in the other figures. A web which is perfectly uniform in length from one side to theother would extend in a straight line when thus laid out and the supply roll 7 would be arranged directly in line with the press with its axis parallel withthe axes of the printing and impression cylinder, as shown in full lines. formly uneven in length from one side to the other, however, it will not extend in a straight line when laid out flat, but in the are of a circle, as indicated in dotted lines in Fig. 9, and, as there indicated also, such a web must be so directed to the press that the curve formed thereby is normal to the line of contact of the first set of webforwarding surfaces which make whole surface pressure contact therewith. In other words, such a web must be so directed to the press that the line of contact of the first set of web forwarding surfaces willlie in a radius of the curve formed by the web. It follows that, in order to properly direct such a web to the press by mani ulating the roll 7, the latter should be shifted from the position shown in full lines in Fig. 9 to some other position such that its axis will lie in a radiusof a curve which is normal to the line of contact of the web-forwarding surfaces, as indicated in dotted lines. This is the position which the web roll 7 is given by the adjustment described. In ordcr that such a web may pass 1V here a web is unismoothly through the press, moreover, the

travel of the short side of the web must be made slower than that of the long side thereof in the proportion that the two sides differ in length. Since the cylindrical webforwarding surfaces tend to advance both sides of the web at the same speed, either the travel of the short side of the web through the web-forwarding surfaces must be retarded, or the travel of the long side of the web through the forwardin surfaces must be accelerated. We have ound that this may be accomplished b var ing the tension on the two sides of t e web Thus the travel of the short side of the web may be retarded by applying more tension to that side than at the other side in advance of the web-forwarding surfaces, or the long side of the web may be accelerated by appl ing more tension to that side at the rear of the web-forwarding surfaces. We prefer to use the former method, as in this way the web-forwarding surfaces themselves may be made use of to produce thedesired variations in tension. It will be seen that, by reason of the fact that the web is shorter on one side than on the other a shorter length of web will be paid out at one end of the supply roll than at the other end. It fol-- lows that, if the supply roll is retarded in any way, the resulting tension on the web will be the greatest on the short side thereof, since the web-forwarding surfaces tend to advance both sides of the web at the same speed. If a stron enough brake be applied to the roll 7, the d ifl'erence in the tension on the two sides of the web will be great enou h to cause the necessary retardation of t e short side of the web through the web-forwardin surfaces. The result will be the same i instead of applying a brake to the roll 7, the tension be applied directly to the web itself, as by means of the

tension rollers

21 and 22.

If the web being fed to the press were perfectly inelastic or non-stretchable, the path of the web through the press would be in the same curve as that formed by the web when not under tension and all of the retardation of the short side of the web would be effected by a slippage between the web-forwarding surfaces. Where the web is more or less elastic, however, as in the case of paper, the greater tension on the short side of the web would reduce the inequality in the length of the two sides of the web, so that the path of the web would lie in a curve of a lou r radius than that which would be formed E; the web if laid out flat under uniform tension. In this case the retardation would be due partly to the slippa between the web-forwarding surfaces and the fact that the short side of the web is temporarily stretched, or elongated and passed through the rollers in an elongated condition. It will be noted that if a web were sufficiently elastic and-no slippage occurred between the web-forwarding surfaces, the inequality in the length of the two sides of the web might be entirel removed by the temporary stretching of t web. In this case the web would pass to the machine in a straight line, as in the case of a rfectly uniform web. As, however, any su tantial partly to.

variation in the tension on the two sides of the web produces a co'rrespondin variation in the slippa warding su aces, it is usually 'found necessary to shift the roll 7 to one side or the other of the normal position shown in full lines in Fig.9. In any event however it is only necessa to shift the roll in one direction or the ot er until the web runs smoothly into the press, the variation in the tension on the two sides of the web always being-automaticall taken care of by the web-forwarding sur aces. As before stated, if the web cannot be made to run smoothly into the press by adjusting theroll 7, it is because the variations in the length of the web do not val? uniformly from one side to the' other. this case the dam may be resorted to to pr uniformit 7 It will lie observed that the adjustment of the roll 7 constitutes a changing of thediing mechanism ace the desired thereof between t e web-for rection or a re-directingof the course of the .web to the press. The re-directing'of the course of the web to the press ma be accomplished in other wa s than by a justing the roll 7. For examp e, the result may be accomplished by means of one or morerguide rolls or turner bars which are adjustably mounted so that the path of either side of the web from the sup 1y roll to the ress may be made lon er t an the path 0 the other side. By p acing such a rolleror set of rollers, moreover, at a oint half way between the supply roll an the web-forwarding surfaces, the proper re-directin of the web can be attained without distur ing the position of the supply roll 7. This arrangement is shown in lgs. 10 to l4. As here shown a loop of the web is passed around two

stationary rolls

43 and 44 and over an adjustable roll 45. The roll 45 is journaled at one end in a box 46, which is pivotall mounted so that the roll can swing vertically. The opposite end of the roller is journaled in a box 47, which may be adjusted vertically, both above and below the level of the box 46, a screw 48 being provided for this purpose. By this construction it will be seen that the ath of either side of the web may be ma e longer or shorter than that of the other side. Sup osing now that the upper side of the web s own in Fig. 11 is longer than the lower side, by raising the adjustable end of the roller 45 the length of the ath of the upper side of the web will be ma e longer than the path of the lower side and the web will take a new direction as indicated in dotted lines, the web bein deflected at its medial ortion by the inclination of the roller, sotliat the web will pass from the roller 45 to the press in the desired direction. The direction, of the web from supply roll 7 to the roll 45 will be exactly the reverse of that from the roll 45 to the press. The length of. these paths being I equal, the roll 7 will not need to be shifte It will be noted that by this construction the one adjustment of the roll 45 is made to take the place of the two adjustments of the supply roll 7. Y

This 'nventlon in its broader aspects is not limited to the particular apparatusshown and described, nor to the particular apparatus by which it may be carried into etfect, as many changes and variations other than those suggested may be made in the apparatus without departing from the main princi les of the invention or sacrificing- 1. A web manipulating mechanism comprising a support for a roll of paper, means for, advancing the web from the roll, and' means for varying the tension on the Web inequalities" the'length 6f" the""we'bat' locally with relation-to its width, whereb y diflerent parts of its width may be removed or compensated for, substantially as described.

2. A web manipulating mechanism comprising a support for a roll of paper, means for advancing the web from the roll, and means for varying the len th of the web locally with relation to its width, whereby inequalities in the length of the web at different parts of its width may be removed or compensated for, substantially as described.

3. A web manipulating mechanism comprising a support for a roll of paper, means for advancing the web from the roll, and means for increasing the length of the web locally with relation to its width, whereby inequalities in the length of the web at difl'erentparts of its width may be removed or compensated for, substantially as described.

4. A web manipulating mechanism, comprisin a support for a roll of paper, means or a vancing the web from the roll, and means for increasing the tension on the web locally with relation to its width, whereby inequalities in the length of the web at different parts of its width may be removed or compensated for, substantially as described.

5. A web manipulating mechanism comprisin a support for a roll of paper, means for a vancing the web from the roll, and means for damping the web locally with relation to its width, whereb inequalities in the length of the web at diflerent parts of its width may be removed or compensated for, substantially as described.

6. A web manipulating mechanism comprisin a support for a roll of paper, means for a vancing the web from the roll, and means for stretching the web locally with relation to its width, whereby inequalities in the length of the web at different parts of its width may be removed or compensated for, substantially as described.

7 A web manipulating mechanism comprisin a support for a roll of paper, means for a vancing the web from the roll consisting of web-forwarding surfaces which make" unbroken pressure contact with the web and continuously operate in such contact, and means for varying the tension on the web locally with relation to its width, whereby inequalities in the length of the web at difieren t parts of its width may be removed or compensated for, substantially as described.

8. A web manipulating mechanism comprising a support for a roll of paper, means .for advancing the web from the, roll consisting of web-forwardingsurfaces 'which make unbroken pressure contact with the web and continuously operate in such con- "--'tact,' and meansfor varying the length of.

the web locally with relation to its width, whereby inequalities in the length of the web at difi'erent parts of its width may be removed or compensated for, substantially as described.

9. A web manipulating mechanism comprising a support for a roll of paper, means for advancing the web from the roll, consisting of web-forwarding surfaces which make unbroken pressure contact with the web and continuously operate in such contact, and means for increasing the length of the web locally with relation to its width, whereby inequalities in the length of the web at difierent parts of its width may be removed or compensated for, substantially as described.

10. A Web manipulating mechanism, comrisin a support for a roll of paper, means i a vancing the web from the roll, consisting of web-forwarding surfaces which make unbroken pressure contact with the web and continuously operate in such contact, and means for increasing the tension on the web locally with relation to its width, whereby inequalities in the length of the web at difi'erent parts of its width ma be removed or compensated for, substantially as described.

11. A web manipulating mechanism, comprising a support for a roll of paper, means for advancing the web from the roll, consisting of web-forwarding surfaces which make unbroken pressure contact with the web and continuously operate in such contact, and means for damping the Web locally with relation to its width, whereby inequalities in the len th of the web at different parts of its wi th ma be removed or compensated for, substantially as described.

12. A web manipulating mechanism, comprising a support for a roll of paper, means for advancing the web from the roll, means for dam ing the web locally with relation to its wid l, and means for increasing the tension on the dampened part orparts of the web, whereby inequalities in the l en th of the web at different parts of its widt may be removed or compensated for, substantially as described.

13. A web mani ulatinglmechanlsm, comrising a sup ort or a ro of paper, means or guiding e web from the roll to the machine, and means for varying the tension of the web locally with relation to its width, whereby inequalities in the len of the web at different parts of its wi th ma be removed or compensated for, substantially as described.

14. A mechanism for feeding-webs which vary as to the relative lengths of their opposite sides to a web manipulating machine having web forwarding surfaces operating in rolling contact, comprising means for supporting a web supply roll and means independently of the tension on the web for ad usting the direction from which the web a preaches the machine, whereby the web may passed throu h the web forwardingedsurfaces, smoothly, substantially as descri 15. A mechanism for feeding webs which vary in length at their opposite sides to a web manipulatin machine having cylindrical web forwar ing surfaces operating in pressure contact, comprisinga support for a supply roll, means for guiding the web from the supply roll to the machine, means for adjustin the direction from which the web approac es the machine, rymg the length of the lation to its width, so as to remove or compensate for local 1n ualities in the length of the web, whereb 316 web may be passed throu h the we forwarding surfaces smoot l and at predetermined places, substantia y as described.

16. A mechanism for feeding webs which vary in length at their opposite sides to a web manipulating machine having cylindrical web forwarding surfaces operating in pressure contact, comprising a support for a and means for vasupply' roll, means for guiding the web fromthe supply roll to the machine, means for adjustin the direction from which the web approac es the machine, and means for increasing the length of the web locally with relation to its width so as to. remove or compensate for local inequalities in the length of the web, whereby the web ma' be passed throu h the web forwardin surfiices smoothl an at a redetermined fiace, substantia y as descri d.

17. A mechanism for feeding webs which vary in length at their opposite sides to a web manipulatin machine having cylindrical web forwar ing surfaces operating in pressure contact, comprising a support for a feeding mechanism supporting a web supp y rol web locally with re-- mama supply. roll, means for guiding the web from t e supply roll to the machine, means for adiusting feed direction from which the we approaches the machine, and means for dampening the web locally with relation to its width, to remove or compensate for local inequa-litles in the length of the web whereby the web may be passed through the web forwarding surfaces smoothly and at a predetermined place, substantially as described.

18. The combination with a web manipulating machine havin r web forwarding surfaces operating in ro ling contact, of a web comprising means for supporting a web su ply roll, and means for adjustlng the ang e between the supply roll and the web forwarding surfaces in-the machine, whereb the direction from which the web approac es the machine may be varied, substantially as described. I

19. The combination with a web manipulating machine havin web forwarding surfaces operating in ro ing contact, of a web feeding mechanism com risin means for means for gui ing t web from a supply roll to themachine, and means independent of the tension on the web for adjustin the angle between the iding means and t e web forwarding sur aces 1n the machine, whereby the direction in which the web approaches the machine may be varied, substantially as described. v

20. A mechanism for feeding webs to web manipulating machines, comprising means for supplying the web to the machine, nieans for a justin the direction from which the web approac es the machine and means for holding said adjusting means in the adjusted position, whereby the web maybe passed throu h the web forwarding surfaces smoothly, substantiall as described.

21. A mechanism or feeding webs to a web manipulating machine Havm web forwarding surfaces operating in ro ing contact, comprising means for sup lyin a web to the machine, and means ind epen ent of the relative tensions at different arts of y the width of the web for varying t e direction from which the web approaches the machine, whereby the web may be passed through the web forwarding surfaces smoothly, substantially as described.

22. A printing press including in combination, a rotary printin couple and means 120 for supplyin a web to tfie print-ing couple,- said means ing constructed positivel to present the web to the printing couple f iom various, directions, whereby the web may be passed through the printing cou le smoothly.

23. A printing press including in combination, a rinting couple operating in continuous rol ing contact, and means for su plying a web to the printi couple, said means being constructed posltively to pre-.130

sent the web to the rinting couple from various directions, w ereb the web may be passed through the printing couple smoothly. 24. A mechanism for feeding webs to web manipulating machines including in combination, means for supplying a web to the machine, and means acting upon the portion of the web which approaches the machine for causing the tension onthe web locally with relation to its width to vary in accordance with inequalities in the length of the said portion of the web at different parts of its width. 7

25. A mechanism for feeding webs' to web manipulating machines including in combination', means for supplying the web to the machine, and-means for maintaining greater strains on the shorter parts of a web having inequalities of length at different parts of its width than on the lower parts.

26. A mechanism for feeding webs to web manipulating machines including in com-' bination, means for directing a web to the machine, and means acting upon the portion of the web approaching the machine for varying the direction from which the web approaches the machine and the tension at opposite sides of the web, whereby inequalities in the length of the web at o posite sides thereof may be compensated or, substantially as described.

27. A mechanism for feeding webs to web mani ulating machines including in combination, means for supporting a web roll and means acting upon the portion of the web between the web roll and the machine for varying the direction from which the [snub web approaches the machine, said means. be-

at opposite sides thereof may be compensated for.

28. A mechanism for feeding webs to machines having web manipulating members operating upon the web with continuous pressure contact, means for directing the web to the machine, said means being constructed to cause the web to approach the machine from different directions and to vary the tension at different parts of the web in such manner as to compensate rfor inequalities in the length of the iweb at different parts thereof, substantially' as described.

29. A mechanism for feeding webs to machines having web manipulating members operating uponthe .web with "continuous pressure contact, meansfor supporting a Web roll and means acting upon the portion of the web approaching the machine for varying the d irection'from which the web approaches the machine and the tension at opposite sides of the web, whereby inequalities in the length of the web at opposite sides thereof may be compensated for.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribing witnesses.

JOSEPH P. KNAPP. GEORGE E. PANCOAST.

Witnesses:

Gno. H. BARNES, W. P. TENEYCK.

It is hereby certified that in Letters Patent No. 948,548, grant ed February 8, 1910, upon the application of Joseph P. Knapp, of New York, and E. Panco'ast,of Brooklyn, New York, for an improvement in Web-Manipulating Mechanism, an error appears in the printed specification requiring correction as follows: Page 7 line 20, the word lower should read longer," and that the said Letters Patent should be readjwiththis correction therein that the same may conform to the record of the case in the Patent Ollice. I

Signed and sealed this 26th day of April, A. D., 1910.

C. O. BILLINGS,

Acting Commicaioner of Patents.

at opposite sides thereof may be compensated for.

JOSEPH P. KNAPP. GEORGE E. PANCOAST.

Witnesses:

Gno. H. BARNES, W. P. TENEYCK.

Signed and sealed this 26th day of April, A. D., 1910.

C. O. BILLINGS,

Acting Commicaioner of Patents.

It is hereby certified that in Letters Patent No. 948,548, granted Fehrnary 8, 1910, upon the application of Joseph P. Knapp, of New York, and George E.

Pancoast, of Brooklyn, New York, for an improvement in Web-Manipulating Mechanism, an error appears in the printed specification requiring correction as follows: Page 7 line 20, the word lower should read long er, and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ollice.

Signed and sealed this 26th day of April, A. D., 1910.

C. C. BILLINGS,

Acting Commissioner of Pdtmts.

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