US1904571A - Web renewing mechanism for printing machines - Google Patents

Description

April 18, 1933. I J. R. TOMLIN 1,904,571

WEB RENEWING MECHANISM FOR PRINTING MACHINES Original Filed Feb. 1931 2 Sheets-Sheet l e /.9 Q 107 I 42 e8 44 April 18, 1933. J. R. TOMLIN WEB RENEWING MECHANISM FOR PRINTING MACHINES INVYENTORI- mdw Fatented Apr. 18, 1933 UNITED STATES PATENT OFFICE:

JOHN R. rommm or BROOKLYN, New YORK, ASSIGNOR TO R. nor. a so, me, on NEW YORK, N. Y., A CORPORATION or NEW YORK WEB RENE-WING MECHANISM FOB PRINTING MACHINES Application filed February 2, 1931, Serial No. 512,871.- Renewed Kay 3, 1932.

This invention relates to improvements in web supply mechanism for printing machines in which the paper or other material to be printed is drawn from a web roll. In machines of this class, when a web roll that has been running becomes exh usted it is necessary to join the end of the eb of a replacement roll to the end of the web that was drawn from the exhausted roll in order to avoid an interruption in the web supply. On high speed machines, a considerable amount of time is lost if the machine is stopped to thus join the webs, andseveral methods have been developed for making the joint without stopping the machine. There are certain objections to the previously known methods which are avoided by the invention herein disclosed.

An object of the invention is to provide means for supporting web rolls from which a web is fed to a printing machine, and a method and means for joining the end of the web of an expiring roll to the end of the web of a replacement roll while the machine is running at a relatively high rate of speed. 5

Another object of the invention is to provide a web supplying mechanism in which a replacement roll is accelerated to a suitable speed, adhesive material is applied to the peso ripheral surface or end of its web while itis rotating, and the running web is then pressed against the adhesive material causing the webs to be joined together.

It is alsoan object of the invention to pro- 5 vide a web supplying mechanism of generally improved construction, whereby the device will be simple, durable and inexpensive in construction, as well as convenient, practical, serviceable and efiicient in its use.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the method of operation, in the combination and arrangement of parts, andin the details of construction hereinafter described and claimed, it being understood that various changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing' from- .Co the spirit of the invention.

The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein:

Figure 1 is an end view partly in die ammatic form showing a rotatable web rol car-' rier adapted to support a running web roll and a replacement web roll, and showin means for rotating the replacement roll an for severing the web from the depleted running roll, and joining it to the end of the web of the replacement roll; and

Figure 2 is a side view of the mechanism depicted in Figure 1.

Referring to the drawings, the numeral 3 indicates a shaft that is rotatable insuitable' beari s not shown. The rotation may be effecte by gearing to an electric motor or other convenient source of power. Arms 4 and 4', are secured to the shaft and are provided with bearings 5 and 5', whichrotatably support spindles 6 and 6', having tapered extremitles 7 and 7', that are adapted to engage the cores 8, of web rolls which are rotatab y supported thereby, as shown in Fi ure 2.

eferring to Figure 1, a ruiming web roll which is nearly exhausted as indicated at 9 and a replacement roll is indicated by the numeral 11. In this view, the webs are shown in the relation they bear when a web running from the expiring roll isabout to bellreplaced by the web of the replacement ro Means for applying adhesive material to' the end of the web of the replacement roll includes a tubular valve member 12, that is rotatable in a valve body 13. The valve member 12 is provided with an extended arm 14, which engages with a plunger 15, that is adapted to be operated forward and backward by the action of the solenoids 16 and 16', that are secured to'lugs 17 formed on the body member 13. The whole mechanism just described is pivotally supported on a shaft 18, to which an arm 19 is secured.

A link 21 is pivotally secured to the arm 19 and to a triple-lever 22, pivotally supported at- 23. One arm of the lever is connected to a spring 24, the opposite end of which may be connected to any suitable support. Another 10c '5 but prevented from rotating on the shaft by a feather 29.

able means.

1 25.. app ylng The shaft 28 is preferably, driven in timed relation to the printing machine by direct connection td,the machine, or by other suit- A collar 31 is secured to the shaft and is provided with, trunnions 32, which pivotally support a ring 33, that is connected to the collar 27 by means of a link 34. It will be understood that when the shaft 28 is rotated, the ring 33 Will tend to assume a position at right angles to the axis of the shaft and in do1ng so will swing the body member on the shaft 18 in a clockwise direction. The action of the ring 33 is opposed by the spring 24, the combination constituting an automatic means that is responsive to variation in the speed of the press whereby the position of the mechanism for the adhesive is regulated.

The valve member 12 is providedwith a line of orifices or openings, one of which is indicated at 35 and similar openings 36 are provided in the body member 13. A relatively strong adhesive materialunder pressure may be supplied to the valve member 12 by any suitable means, and it will be seen that when the arm 14 is moved by the plung- 4555 the replacement roll is provided by a roller f ure 1 by means of the spring 74, one end of to a shaft 39 that may E er 15, it will cause the openings 35 to pass the openings 36 and momentarily allow some of the adhesive material to be ejected against the surface of the web roll 11. Inother words it will be seen that means are provided for advancing or retarding the openings or orifices relatively to the rotation of the roll, whereby the adhesive material may be deposited at a predetermined point on the peri hery or web end of the replacement roll. eans for pressing the web running from the exhausting roll against the periphery of 37, rotatably supported in arms, one 0 which is shown at 38, which arms are secured rotatably supported in suitable bearings in the frames of the machine. A weight 41,- is adjustably supported on a rod 42, that is secured to one of the arms 38 and thusprovides a means for adjusting the pressure applied by the roller 37. Means for severing the web of the depleted roll may take one of several forms, but the preferred construction includes swinging arms 43, which carry knives 43. The arms 43 are forked, and arranged to swing on trunnions 44, formed on the blocks 45 and 45'. The block 45 is slidably support ed on a shaft46 and prevented from turning by a feather 47. One. fork member of each of the arms 43 is extended to form a lever 48,

that is tpivotally connected to a rod 49, that ough a lug 51, formed on the block 45. The rods 49 are extended and carry springs 52, one end of each of which abuts against the lug 51, while the other engages with a collar 53 secured to the rod 49. This arrangement, it will be understood biases the arms 43 toward the position shown in Figure 2. The other fork member of each of the arms 43 is extended to form a lever 54. These are pivotally secured to plungers 55 of the solenoids 56, which when energized swing the knives 43 into engagement with the edges of the web W, which is thereby cut and torn across.

The block 45 is provided with an internally threaded hole which is engaged by a screw 57 that is rotatably supported at one end by a bracket 58 and at the other end by a suitable bearing in a frame member 59. The screw is prevented from moving endwise by means of a collar 61 and a hand wheel 62, both of which are secured to the screw. It will be understood that by rotating the of the arms 43 may be moved along the shaft 46, to the position shown in dotted lines in order that the knives 43 may engage with ashort web roll. The block 45' is shown rig- 63, secured to the frame member 64, although it will be understood that it may be arranged to slide in a manner similar to the block 45.

In the embodiment of the 'invention shown, the operation of the mechanism is controlled through electrical means which include a push button arranged to operate a commutating switch, a selector switch operated by the rotation of the web roll carrier, rotary contactors for each web roll position, and a detector switch in engagement with the web and operated on the passage of more than one thickness of web material.

The push button is indicated at 71. This carries a bridge 72 adapted to engage with stationary contacts 73 and 73. The button is held in the position shown in igwhich abuts against the bridge 72, while the other end engages a fixed plate 75. A rod 76, connected to the push button is pivotally secured to anrarm 77 pivoted at 78. The arm 77 carries a pawl 79, that engages a ratchet wheel 81, carrying a bridging connection 82, that is adapted to engage with stationary contacts 83, 84 and 85, that may be supported on any suitablebase. It will be understood that operation of the push button 71, results in closing the circuit between contact 73 and 7 3, and simultaneous- 90. The bridging piece is correspondingly moved and acts to close the circuit alternate- 1y from contact 83 to 84 and from contact 83 to contact 85.

The selector switch form of a mercury tube'having end electrodes ush 1v rotating, the ratchet wheel 81 throughscrew, the sliding block 45 with one is herein shown in the 86 and 87 and a side electrode 88. Slip ring connectors of well known type are shown diagrammatically at 89 and 89 and it will be understood that these are fixed on the arm 4,

concentric with the shaft 3. F ixed brushes shown in diagrammatic form in Figure 1 and it will be understood that as the web roll is rotated, the arm 91 will move with it and the circuit will be closed between contacts 92 and 93, once during every revolution.

The detector switch is provided with a fixed contact 94 and a movable contact 95, the latter being carried on an arm 96, pivotally supported by a bracket 97. A roller 98,is rotatably supported by the arm 96 and the roller 99 is rotatably supported by the bracket 97. A spring 101 acts to bias the arm 96 to the position shown in Figure 1 but on passage of more than one thickness of web-material between the rollers 98 and 99, the roller 98 will be moved and close the contact between contacts 9 1 and 95. The guide roller 102 is provided to press the web W against the roller 99.

To explain the operation of the mechanism, let it be assumed, that a roll from which a web has been running from the machine is approaching exhaustion. A replacement roll is prepared for pasting by lightly securing the end of its web, as indicated at 103, to the underlying layer by means of grease or some light adhesive and the arm 91, is then turned on the spindle 6, and locked in suchposition that it points toward the end of the web 103. When the running roll is nearly exhausted it is moved from the running position above the shaft 3 to the posi tion indicated by the numeral 9 in Figure 1 by turning the roll carrier clockwise. This results in bringing the periphery of the roll 11 in contact withthe running web W, which is pressed firmly against the roll 11 by the roller 37, thus providing sufficient friction to rotate the roll 11 and accelerate it to the speed of the running web.

A renewal of the'web may then be made by pressing the push button'71. This results in closing a circuit from conductor L, contact 73, bridge 72, contact point 73, conductors 104 and 105, contact- 83, bridge 82, contact 85, conductor 106, solenoid 16', conductor 107, contact ring 89', conductors 108 and 109 to contact 93; and from contact 92, conductor 111, contact 86, through the mercury to contact 88 and conductor 11.2, ring 89, contact 90, and conductor 112 to line L". It will be noted that as the contact 92 passes the contact 93, the solenoid 16 will operate to momentarily open the valve and permit the adhesive to be ejected on the periphery of the web roll 11. The setting of the arm 91 being properly made, the adhesive will be ejected close to the end 103 of the web.

A second circuit is simultaneously made which may be traced from line L through contact 73, bridge 72, contact 7 3', conductors 104 and 113 to contact and from contact 94: and conductor 114 to the solenoids 56, which are connected inparallel, and thence through conductors 115 and 112 to L".

It will be seen that after the adhesive has been deposited on the periphery of the replacement roll, it will be joined to the running web W by the pressure applied by the roller 37, and the two webs will together pass between the rollers 98 and 99, thus closing contacts 9t and 95, which result in energizing solenoids 56 and swinging the arms (13 to engage the cutting blades 43 with the running web which is thus severed.

As there is a certain time lag inherent in the operation of all magnetic devices, when apparatus in which they are used, is required to operate at various speeds, this becomes an important factor. In changing Web rolls it is necessary that the change sometimes be made when the press is running at a relatively high speed and sometimes when the press is running at a relatively slowspeed. The automatic mechanism for compensating for this variation has been hereinbefore described, and it will be understood that as the speed of the press increases, the body member 13 of the valve mechanism is moved in the direction of rotation of the roll a suflicient disiance to compensate for the lag in the operation of the solenoids, so that the adhesive will be deposited with proper relation to the end. of the web at any speed of the maprovided by the mercury tube having contacts 86, 87 and 88. It will be understood that when the shaft 3 is turned to bring the arm 91 to the uppermost position, the mercury tube will be reversed and the circuit instead of leading from contact 86 to 88 will be made from contact 87 to 88. The condlictor 111 will then replace conductor 111, contact93' will replace contact 93, and contact 92' will replace contact 92, the circuit otherwise being the same as previously described;

The coinmutating switch acts to connect the solenoids 16 and 16 alternately in circuit on each successive operation so that in one operation, the valve member will be turned clockwise and on the following operation, itiwill be turned counter-clockwise.

-What I claim is:

- 1. The method of replacing a web running toa printing machine, which comprises, rotating a replacement web roll at .a peripheral speed substantially equal to the speed of a web being drawn from an exhausting web roll, depositing an adhesive material on the peripheral surface of the replacement roll while it is being rotated, pressing the web running from the exhausting roll against the adhesive material to cause the end of the'web of the replacement roll to adhere to the running web, and severing the web of the exhausting roll.

' 2. The method of replacing a web running to a printing machine, Which comprises, rotating a replacement web roll by pressing the web running from an exhausting web roll against its periphery, depositing an adhesive material on the end of the web of the replacement roll while it is thus being rotated and thereby causing the web of the replacement roll to adhere to the running web, and severing the web of the exhausting roll.

3. The method of replacing a web roll running to a printing machine, which comprises, accelerating a replacement web roll and rotating it at a peripheral speed substantially equal to the speed of a web being drawn from an exhausting web roll, depositing an.

adhesive material on the peripheral surface f the replacement roll after it has been accelerated to the speed of the web running from the exhausting web roll, pressing the web running from the exhausting roll against the adhesive material to cause the end of the web of the replacement roll to adhere to the running web, and severing the web of theexhausting roll. a

4, In a mechanism for supplying a web to a printing'machine, means for supporting a web roll from which a web is running to the machine, means for supporting a replacement web roll, means for rotating the replacement roll at a peripheral speed corresponding to the speed of the running web, and means for depositing adhesive material on the periph: eral surface of the replacement roll while it is being rotated whereby to join itto the running web.

5. In a mechanism for supplying a web to a printin machine, means for supporting a web roll rom which a web is running to the machine, means for supporting a replacement web roll, means for rotating the replacement roll at a peripheral speed corresponding to thespeed of the running web,

neans for depositing adhesive material on the peripheral surface of thereplacement roll while it is being rotated whereby to join it to the running web, and means for severing the running web after the web of the eplacement roll is joined thereto.

6. In a mechanism for supplying a web to a printing machine, means for supporting a web roll from which a web is running to the machine, means for supporting a rev being rotated whereby to join it to the run-- ning web,'and means for severing the running web after the webs are joined. 7. In a mechanism for supplying a web to a printing machine, means for supporting a' web roll from which a web is running to the machine, means for suppgrting a replacement roll in position to engaged by the running web and to be'driven thereby, means for depositing adhesive material on the en of the web of the replacement roll while it is being rotated, and means to press the running Web against the adhesive material and jointhe web of the replacement roll to the running Web.

8. In a mechanism for supplying a web to a printin machine, meansifor supporting a web roll rom which a web is running to the machine, means for supporting a replacement roll in position to be engaged by the running web and to be driven thereby, means for depositing adhesive material on the end of the web of the replacement roll while it is being rotated, means to press the running web against the adhesive material and join the web of the replacement roll to the running web, and means for severing the running web after the webs are joined.

9. In a mechanism fonsupplying a web to a printin machine means for supporting a web roll rom which a web is running to the machine, means for supporting a replacement roll in position to be engaged by the running web and to be driven thereby, means for depositing adhesive material on the end of the web of the replacement roll while it is being rotated, and 'a pressure means acting against the running web to press it into engagement with the adhesive on the replacement roll and thereby join the webs.

10. In a mechanism for supplying a web to a printing machine, means for supporting a web roll from which a Web is running to the machine, means for. supporting a replacement roll in position to be engaged by the running web and to be driven thereby, means for. depositing adhesive material on the end of the Web of the replacement ro ll while it is being rotated, a pressure means acting against the running Web to press it into engagement with the adhesive on the replacement roll and thereby join the webs, and means for severing the running web after the webs are joined.

11. In a mechanism for supplying a web to a printing machine, means for supporting a web roll from which a web is running to the machine, means for supporting a replace ment roll in position to be engaged by the running web and to be driven thereby, means for depositin adhesive material on the end of the web the replacement roll while it is being rotated, and a roller acting against the running web to press it into engagement with the adhesive on the replacement roll and therebp join the webs. m 12. n a mechanism for supplying a web to a printin machine, means for supportlng a web roll rom which a web is running to the machine, means for su porting a replacement roll in position to e engaged by the running web and to be driven thereby, means for depositing adhesive material on the end of the webof the replacement roll while it is being rotated, a roller acting against the runnin web to press it into engagement with 23 the adhesive on the replacement roll and thereby join the webs, and means for severing the running web after the webs are joined. 13. In a mechanism for supplying a web to a printing machine, means for supporting 25 a Web roll from which a web is running to the machine, means for supporting a replacement web roll, means for rotating the replacement roll at a peripheral speed corresponding to the speed of the running web, 'mechanism having an orifice for depositing adhesive material on the web of the replacement roll while it is being rotated, and means governed by the speed of the machine for advancing or retarding the orifice relatively to $5 the rotation of the roll.

14. In a mechanism for supplying a web to a printing machine, means for supporting a web roll from which a web is running to the machine, means for supporting a replacement web roll, means forrotating the replacement roll at a peripheral speed corresponding to the speed of the running web, mechanism for depositing adhesive material on the web of the replacement roll while it I is being rotated, and means actuated in response to changes in the peripheral speed of the running web whereby the deposition of the adhesive material is predeterminedly positioned.

15. In a mechanism for supplying a web to a printing machine, a web roll carrier adapted to support a web roll from which a web is running to the machine and a replacement web roll, said carrier being movable to bring the said rolls successively into running position, means for rotating the replacement roll at a peripheral speed corresponding to the speed of the running web, and means for depositing adhesive material on the end of the web of the replacement-roll while it is being rotated, whereby to join it to the running web.

16. In a mechanism for supplying a web to i a printing machine, a web roll carrier adapted 5 to support aAWeb roll from which a web is governed by the s eed of the machine for running to the machine and a replacement web roll, said carrier being movable to bring the said rolls successively into running position, means for rotatingthe replacement roll at a peripheral speed corresponding to the speed of the running web, means -for depositing adhesive material on the end of the web of the replacement roll while it is being rotated whereby to' join. it to the running web, and means for severing the runnin web after the web of the replacement I0 is joined thereto.

17. In a mechanism for supplying a web to a printing machine, a web roll carrier adapted to support a roll from which a web is running to the machine and a replacement roll, said carrier being movable to bring the said rolls successively into running position and to engage the replacement roll with the running web to rotate it, means for depositing adhesive material on the end of the web of the replacement roll while it is being rotated, and means to press the running web against the adhesive material and join the we% of the replacement roll to the running 96 We i e 18. In a mechanism for supplying aweb to a printing machine,v a web roll carrier adapted to support a roll from which a web is running to the machine and a replacement roll, said carrier being movable to bring the said rolls successively into running position, means for rotating the replacement roll at a peripheral speed substantially the same as i the speed of the running web, mechanism for depositing adhesive material on the end of the web of the replacement roll while it is being rotated, and means governed by the speed of the machine for varying thev position of the depositing mechanism relatively to the rotation of the roll. v

19. In a mechanism for supplying a web to a printing machine, a web roll carrier adapted to support a roll from which a web is running to the machine and a replacement roll, said carrier being movable to bring the said rolls successively into'running position, means for rotating the replacement roll at a peripheral speed substantially equal to the speed of the running web, mechanism having an orifice for depositingv adhesive material adjacent the end of the web of the replacement roll while it is being rotated wherewith to join it to the running web, mechanism advancing or retar ing the orifice'relatively to the rotation of the roll and means for severin the running web after the'Web of the repIacement roll 1s joined thereto.

20. In a mechanism for supplying a web to a printing machine, a web roll carrier adapted to support a call from which a web is running to themachine and a replacement roll, said carrier being movable tobring the said rolls successively into running position .150

' riphery of the replacement roll, and means to press the running web against the adhesive material and join the web of the replacement roll to the running web.

21. The methodof replacing a web runnin toa rintin machine which com rises,

rotating a replacement web roll by pressing the web running from an exhausting web roll against its periphery until the peripheral speed of the replacement web roll is substantially equal to the speed of a web being drawn from an exhausting web roll, depositing automatically an adhesive material on the periphery of the replacement roll at a predetermined portion thereof while being thus rotated and thereby causing the web of the replacement roll to adhere to the running well), and severing the web of the exhausting rol 22. In a mechanism for su plying a web to a printing machine, means or supporting a web roll from which a web is' running to the machine, means for supporting a replacement web roll in engagement with the running web to rotate said replacement roll, means for depositing automatically adhesive material on the peripheral surface of the replacement roll at a predetermined point thereof while said re lacement roll is being rotated wherebyto join the web of the replacement roll to the running web, and means for severing the running web after the webs are joined.

23. In a mechanism for supplying a web to a printing machine, means for supporting a web roll from which a web is running to the machine, means for supporting a replacement web roll, and means for depositing adhesive material on the peripheral surface of the replacement roll while the roll is being rotated whereby to join it to the running web said means for depositing adhesive material including an electrically operated valve having an outlet adjacent to the path of the replacement roll, and a timing device operated by the rotation of the replacement roll whereby the operation of the valve is timed to deposit the adhesive material adjacent the end of the web. 7 W I 24. In a mechanism for supplying a web to a printing machine, means for sup orting a web roll from which a web is runnlng to a machine, means for supporting a replacement web roll, and means for depositing adhesive material on the peripheral surface of the replacement roll while the roll is being rotated, whereby to join it to the running web; said 'means for depositing adhesive material including an electrically operated valve having an outlet adjacent to the path of the replacement roll, a timing device operated by the rotation of the replacement roll whereby the operation of the valve is timed to deposit the adhesive material adjacent the end of the web,-'and a speed responsive device driven by the machine for varying the position of the valve outlet to coirlipensate for variation in the speed of the ro 25. In a mechanism for supplying a web to a printing machine, a ,rotatable carrier adapted to support a web roll from which a web is running to the machine and a replacement web roll, a roller adapted to press the running web against the replacement roll to rotate the said replacement roll at a peripheral speed substantially equal to that of the running web, a valve adapted to handle adhesive material and having an outlet variably positionable to deposit the said material on the periphery of the replacement roll while it is rotating and adjacent the end of its web, and regulating mechanism responsive to changes in speed of, the machine for positioning the said outlet.

26. In a mechanism to a printing machine, a rotatable carrier adapted to support a web roll from which a web is running to the machine and a replacement web roll, a roller ada ted to press the r unning web against the rep acement roll to rotate the said replacement roll at a peripheral speed substantially equal to that of.

the running web, an electrically operated for supplying a web valve adapted to handle adhesive material and having an outlet positioned to deposit the said material on the periphery of the replacement roll, an electrical timmg mechanism for the valve, operated by the rotation of the replacement roll, and a control switch in circuit with the timing mechanism, operable to efiect deposit of the adhesive material adjacent the end of the web of the replacement roll while said roll is rotating.

27'. The method of joining webs of successive rolls of paper supplying a printing press, which consists in bringing a new roll up to desired' speed, treating the new webwhile said new roll is rotating to cause it to become sticky, and producing pressure between the new roll and the web proceeding from an expiring roll, whereby the end of the new web is caused to adhere to the ex iring web, thus connecting the newweb t eretowithout stopping the press.

28.. The method of oining the webs of successive rolls of paper supplying a printin press, which consists in bringing a new rofi up to desired speed, spraying a material on the web of the new roll while said roll is rotating to cause theweb to become sticky, and producing pressure between said new roll and the web proceeding from the expiring roll, whereby the web of the new roll is caused to adhere to the expiring web, thus connecting the new web thereto without stopping the press.

29. The method of replacing a web running to, a printing machine, which comprises rotating a replacement web roll at a deslred peripheral speed, depositing a material on the peripheral surface of the replacement roll while it is being rotated to cause it to become sticky and producing pressure between said new roll and theweb proceeding from an expiring roll, whereby the web of the new roll is caused to adhere to the expiring web, thus connecting the new web thereto without stopping the press.

30. The method of replacing a web running to a. printing machine, which comprises rotating a replacement web roll at a desired peripheral speed, spraying a material on to 'the peripheral surface of the replacement roll while it is being rotated to cause it to become sticky, and producing pressure between said new roll and the web proceeding from an expiring roll, whereby the web of the new roll is caused to adhere to the expiring web, thus connecting the new web thereto without stopping the press.

31. The method of replacing a web running to a printing machine, which comprises rotating a replacement web roll by the web running from an exhausting web roll en gaging its periphery until the peripheral speed of the-replacement web roll is substantially equal to the speed of a web being drawn from an exhausing web roll, depositing automatically material on the periphery of the replacement roll at a predetermined portion thereof while being thus rotated to cause the 34. In a mechanism for supplying a web to a printing machine, a web roll carrier adapted to support a roll from which a'web is running to the machine and a replacement roll, said carrier being movable to bring the said rolls successively into running position and to engage the replacement roll with the running web, means for depositing material on the end of the web of the replacement rolI while it is being rotated to cause it to become sticky and join the web of the replacement roll to the running web.

35. In a mechanism for supplying a web to a printing machine, a web roll carrier adapted to support a roll from which a web is running to the machine and a replacement roll, said carrier being movable to bring the said rolls successively into running position, means for rotating the replacement roll at a peripheral speed substantially the same as the speed of the running web, mechanism for depositing material on the end of the web of the replacement roll while it is being rotated to cause it to become sticky, and means governed by the speed of the machine for controlling the action of said mechanism.

In testimony whereof, I afiix my signature.

JOHN R. TOMLIN.

replacement web to become sticky and thereby causing the web of the replacement roll to adhere to the running web, and severing the web of the exhausing roll.

32. In a mechanism for supplying a web to a printing machine, means for supporting a web roll from which a web is running to the machine, means for supporting a replacement web roll in engagement with the run ning web to rotate said replacement roll, means for depositing material on the web of the replacement'roll while it is being rotated to cause it to become sticky whereby to join it to the running web.

33. In a mechanism for supplying a web to a printing machine, means for supporting a web roll from which a web is running to the machine, means for supporting a replacement roll in position to be engaged by the running web and to be driven thereb means for depositing material on the end 0 the web of the replacement roll while it is being rotated to cause it to become'sticky, means for producing pressure between the sticky portion of the replacement roll and running web to join the webs.

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