US2120778A - Method of supplying paper to printing presses - Google Patents

Description

June 14, 1938 DUNLAP 7 2,120,778

METHOD OF SUPPLYING PAPER TO PRINTING PRESSES Filed Aug. 24, 1931 4 Sheets-Sheet 1 %M7Z a. y dviww June 14, 1938. 2,120,778

umnon OF SUPPLYINGIPAPVER TO PRINTING PRESSES J. A. DUNLAP Filed Aug. 24, 1951 4 Sheets-Sheet 2 Me 72 2 07 %o%n a jazz J. A. DUNLAP 2,120,778

METHOD OF SUPPLYING PAPER TO PRINTING PRESSES June 14, 1938.

FiledAug. 24, 1931 4 Sheets-Sheet 3 jffja.

June 14, 1938. J. A.' puNLA v 2,120,778

METHOD OF SUPPLYING PAPER T0 PRINTING PRESSES Filed Aug. 24, 1951 4 Sheets-Sheet 4' zzyw $12501 fMrz Cl, fizz" a -w 192 Patented June 14, 1938 METHOD OF SUPPLYING PAPER TO PRINT- ING PRESSES John -A. Dunlap, Chicago, Ill., assignor to Allan J. Cline, Chicago, Ill.

Application August 24, 1931, Serial No. 559,112

10 Claims.

This invention relates to a method and apparatus for joining the webs of successive rolls of paper supplying a printing press by means of what is commonlyknown as a flying paster" and has for its primary object the provision of a method and apparatus by which pasters can be made at a higher speed than has heretofore been the practice.

It has been customary in making so-called flying pasters" to slow the press down to a small fraction of its normal speed and, while means have heretofore been proposed for making highv speed pasters, as, for example, in Hammer Patent No. 1,738,002, granted December 3, 1929, the present invention provides a novel and effective method and apparatus for accomplishing this result with a minimum amount of mechanism beyond that employed in standard paper supplying equipment such as that shown in Cline Patent No. 1,550,241 of August 18, 1925, Hammer Patent No. 1,550,315, also of August 18, 1925, and Cline and Hollander Patent No. 1,618,975 of March 1, 1925, to which reference may be made for an understanding of the construction and principles of operation of paper supplying apparatus of the general character to which the present invention relates.

It is contemplated that by the use of. the present invention, pasters may be made at any desired speed up to the maximum speed of the press, and it will be evident that a great deal of time can thus be saved and the production of the press greatly increased, since the frequentslowing down to almost a stop for making roll changes, as has heretofore been the practice, is eliminated and the consequent loss of time avoided.

It is also a purpose of the invention to provide for a timing device for controlling the operation of a spraying mechanism employed for moistening an adhesive substance on the web of the new roll at the time the paster is to be made.

Further objects and advantages of the invention will be apparent from the following detailed description taken in connection with the accompanying drawings wherein I have shown a preferred embodiment thereof.

Referring to the drawings,

Fig. 1 is an end view of a roll stand, or reel, of the general type shown in the prior patents 0 above referred to, showing the means by which my invention is applied thereto;

Fig. 2 is a top plan viewof. the apparatus shown in Fig. 1, showing one manner in which adhesive is applied to the web of the new roll and in which the web is. held to the roll while the latter is being brought up to speed paster;

preparatory to making, a

Fig. 3 is a detail sectional view taken substan-' tially on the line 33 in Fig. 1, showing a part .of the means employe of the spraying device d for timing the operation principle and method device of operation of the timing Fig. 6 is a view of the roll showing a different cutting of the end of the web of the new roll;

Fig. 7 is a similar view illustrating the use of.

a separate piece of gummed paper for carrying the adhesive instead of having the same applied to the exterior of the web as shown in Figs. 2

and 6; and

Fig. 8 is a detail view of the spraying device, being taken on the line 8-8 of Fig. 1.

Upon said drawings,

illustrating the best manner in which I have thus far contemplated applying the principles of my invention, the reference characters 9 and II indicate spaced uprights, in the upper ends. of which a shaft I2 is journaled, said shaft carrying at its opposite ends spiders l3 and I, each having three arms l5 provided at their outer ends with chucks l6 adaptedto engage in the cores ofrolls of paper indicated, respectively, by the reference .characters ll, l8 and 19, which are thus rotatably supported so that the paper may be drawn therefrom into the press in manner which is well understood in this art. The rolls are adapted to be bodily moved in unison by rotation of the center shaft 12, which is accomplished by means of a worm wheel 2| meshing with a worm adapted to be driven mounted on a frame port, 25 and coupled with said shaft 23.

' As shown in Fig. 1,

22 on a shaft 23, which is by means of a motor 24 part, or other fixed supby means of a clutch 26 the web identified by the numeral 21 is being drawn from the roll l1 and passes over a guide roller 29 from which it is directed into the press.

Tension straps 29, of

which, ordinarily, several are provided, serveto control the rotation of the active roll, being connected, as shown, to a fixed point 3| at one end and to a rotatable drum 32 at the other, said drum being journaled in depending arms 33 attached to the press frame or other suitable fixed support, said drum being under constant strain applied by a torque adjacent said drum an motor 34 rigidly supported d connected with the latter by means of a chain 35 directed over sprockets 36 and 31 mounted, respectively, on the motor shaft and upon said drum, this form of tension device being disclosed in Cline and Hollander Patent No. 1,618,975 hereinbefore mentioned. The straps 29 may have a spring connection, if desired, with a fixed point 3| and in practice springs are ordinarily interposed between said point and the lower ends of the straps, such springs, however, not being shown in the drawings since the tension devices, as such, form no part of the present invention.

In accordance with usual practice, glue or other adhesive in moistened state is ordinarily applied to the end of the web of a new or incoming roll, and when it is desired to change the feed from an expiring to such new or incoming roll, the press is slowed down to a very slow speed, the new roll rotated in counter-clockwise direction (viewing Fig. 1) until the glue-coated portion of the web of said new roll comes into contact with the web from the expiring roll and is connected thereto, after which the web from the expiring roll is severed, the press gradually brought back up to speed and the new roll arranged in desired position by rotation of the roll support or reel, it being understood that such rotation of the reel is also employed to bring the new roll into engagement with the expiring web just prior to the making of the paster in the manner described.

In accordance with my invention, a quick-drying glue or adhesive is applied to the end of the web of the new roll, as indicated at 38 in Fig. 2

of the drawings, the web being preferably cut so as to provide one or more points (two being shown in said Fig. 2), the points being fastened to the body of the roll by pieces of tissue or other thin paper indicated by the numeral 39, these pieces of paper being glued to the outer side of the web and to the body of the roll in such manner as to hold the web tightly against the ro to prevent air from entering under the leadin edge of said web during the rotation of the roll preparatory to making a paster. The end of the web may be cut in any suitable manner and the tissue paper stickers applied over such portion thereof as may be desired, it having been found in practice, however, that it is perhaps preferable to cut the web to one or more points and apply the stickers as shown in the drawings. In Fig. 6 the 'web is shown as cut to a single point, and in Fig. 7 it is shown' as cut straight across with a separate piece of gummed paper 4| adhering to the under side of the web and cut to two points at its forward edge, which points are. held down by stickers 39, as are the points of the web in said Figs. 2 and 6. The stickers are of much more frangible texture than the web itself and may be perforated if desired. As indicated, they serve the important function of holding the web tightly against the roll in order to prevent air from getting under said web,

perhaps tearing the paper or pulling it away from the roll when the roll is rotating at a high rate of speed,

As shown, the roll i8 is adapted to be brought up to desired speed by the action thereon of the running web 21 against which said new roll may be moved by rotation of the reel, although other means of bringing the new roll up to speed might be employed, if preferred. Inasmuch as the adhesive 38 is dry, it will not adhere to said running web during the preliminary rotation of the new roll and therefore the latter may be turned as many times as desired for the purpose of bringing it up to a high rate of speed before making the paster, which is accomplished in manner which will now be described.

A water pipe 42 is provided slightly above and to one side of the roll stand and is equipped with a plurality of nozzles 43 which may be of any suitable construction, a satisfactory form being shown in detail in Fig. 8 of the drawings, illustrating a head having a plurality of channels, or passageways, 44 therein and being formed with a shank portion 45 screwed into a T 46 in the pipe 42 and being held in place by a nut 41 and washer 48. Said nozzles are adapted to spray the adhesive-coated areas of the new roll,

the moisture being directed onto the roll in a plurality of fan-shaped sprays, indicated by the dotted lines 49 in Figs. 1 and 2.

It will be understood that the roll will be rotating in. counter-clockwise direction, as shown in Fig. 1, or toward the left, as shown in Fig. 2, and the supply of liquid to the nozzles is controlled by means of a valve 5| in the supply pipe, which, as shown, is adapted "to be electrically operated, the operation being so timed that only the adhesive-coated area of the roll will be sprayed, and this only at the time when it is desired to make a paster. The timing mechanism is shown in detail in Figs. 3 to 5 of the drawings, which will next be described, it. being understood that the valve 5| may be of any suitable or preferred form, a common type consisting of a solenoid with an armature or core connected to the movable valve member which is normally held in closed position by means of a spring against the action of which it is opened by the solenoid when energized, the solenoid being connected in an electric circuit indicated by the reference character 52.

The timing mechanism comprises rings 53, one of which is mounted on each of the chucks l6 for rotation therewith, said rings being composed for the most part of insulating material, indicated by the reference character 54, but having metal conductor segments 55 thereon'adapted to contact with spring-pressed brushes 56, of which two are provided for each ring, said brushes being connected by wires 5.1 and 58 with segments 59 and 6| provided on a ring 62 secured to the center shaft |2 of the reel, these segments being in contact, respectively, with brushes B3 and 64, which are mounted in a fixed part of the frame and connected, respectively, with opposite sides of the line 52, including the electric valve 5|. It will be understood that there are separate segments 59 and 6| corresponding to each of the reel arms, thus providing a separate pair of said segments for each roll.

The segments 55 of the rings 53 on the roll chucks are of such length and so related to the adhesive-coated area of the corresponding roll that the two brushes 56 will remain in contact therewith only for a fractional part of one rotation of the roll or when the adhesive-coated portion of the roll is in substantially the position shown in Fig. 1 of the drawings, such contact being preferably'for not more than one-sixth of a revolution of the roll.

The brushes 63 and 64 are so positioned that they contact only with the segments 59 and 5| associated with the incoming roll when the latter is in the position shown in Fig. 1. It will thus be evident that the circuit to the valve 5| is not completed until the reel is brought to a predetermined final position and the axial position of the incoming roll is such as to present the adhesivecoated portion thereof to the spray. A manually operable switch 50 is provided in the circuit 52 as shown in Fig. so that the operator may break the circuit to prevent repeated operations of the spray after the paster is made. Immediately after the paster is made, the reel may be turned further to move the new roll todesired running position and when said new roll is nearly exhausted the feed is changed to the succeeding roll by repeating the operation just described.

Other means of timing the operation of the spray may be employed within the purview of the invention, or it may be controlled by the operator, if preferred.

From the foregoing, it will be evident that the operation (assuming the adhesive to have been applied to the new roll and to be in dry condition) comprises merely the turning of the reel, which may be accomplished by the usual type of push button control, until the new roll has been brought into contact with the running web and the latter pressed against the straps 29 if such straps or other backing be employed, the rotation of the new roll being thus started and brought up to desired speed by the action thereon of said running web. As previously explained, the new roll may be brought up to speed by other means, if preferred, without departing from the scope of the invention, although I have found the use of the running web to be a practicable and effective means of rotating said roll. After the desired speed has been attained, which, as contemplated, would ordinarily be the normal running speed, the switch 50 may be closed, which will cause operation of the spray in the manner hereinabove described, the spray serving to soften the adhesive and to weaken the tissue-paper stickers 39 so that when said adhesive comes into contact with the running web the new web will be caused to adhere thereto, the stickers at the same time being broken, and the new web will be led into the press by the pull thereon of the running web, whi h will then be severed by hand or by any sui able mechanism; the reel next being rotated to bring the new roll into normal running position.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention, or sacrificing all of its material advantages, the construction hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. The method of joining the webs of successive rolls of paper supplying a printing press. which consists in bringing a new roll having dry adhesive applied to the web thereof up to desired speed, moistening the adhesive while said new roll is rotating, and producing pressure between said new roll and the web proceeding from an expiring roll, whereby the adhesive is caused to adhere to the expiring web thus connecting the new web thereto without stopping the press.

2. The method of joining the webs of successive rolls of paper supplying a printing press, which'consists in bringing a new roll having dry adhesive applied to the web thereof up to desired speed through the action of the running web thereon, and moistening said adhesive while said new roll is rotating, whereby the adhesive is caused to adhere to the expiring web thus connecting the new web thereto without stopping the press.

3. The method of joining the webs of successive rolls of paper supplying a printing press, which consists in bringing a new roll having dry adhesive applied to the web thereof up to desired speed, spraying the adhesive to moisten the same while said new roll is rotating, and producing pressure between said new roll and the web proceeding from an expiring roll, whereby the adhesive is caused to adhere to the expiring web thus connecting the new web thereto without stopping the press.

4. The method of joining the webs of successive rolls of paper supplying a printing press, which consists in bringing a new roll having dry adhesive applied to the web thereof up to desired speed, moistening the adhesive while said new roll is rotating, and moving said new roll against the web proceeding from an expiring roll, whereby the adhesive is caused to adhere to the expiring web thus connecting the new web thereto without stopping the press.

5. The method of joining the webs of successive rolls of paper supplying a printing press, which consists in applying adhesive to the end of the web on a new or reserve roll, drying the adhesive, tacking down the end of the web by means of a frangible sticker adapted to be weakened by moisture, bringing said roll up to desired speed, moistening said adhesive and sticker while the roll is rotating, and producing pressure between said roll and the web proceeding from an expiring roll, whereby the adhesive is caused to adhere to the expiring web, said sticker thereupon being broken and the feed changed to the new roll without stopping the press.

6. The method of vjoining the webs of successive rolls of paper mounted on a rotatable reel for supplying a printing press, which consists in providing dry adhesive on the web of a new or reserve roll, turning the reel when the active roll is about to expire to move the new roll against the web proceeding from said active roll, the new roll being brought up to desired speed by the action of the running web thereon, and moistening said adhesive to cause the same to adhere to said r'unning web thus connecting the web from the new roll thereto and changing the feed to the new roll without stopping the press.

7. The method of making high speed pasters between the webs of successive rolls of paper supplying a printing press, which consists in bringing a new roll having dry adhesive applied to the web thereof up to desired speed, moistening the adhesive while said new roll is rotating and when it has attained substantially press speed, and producing pressure between said roll and the web proceeding from an expiring roll, whereby the adhesive is caused to adhere to the expiring web thus connectingthe web from the new roll thereto and changing the' feed to the new roll without stopping or materially slowing.

down the press.

8 The method of making high speed pasters between the webs of successive rolls of paper supplying a printing press, which consists in bringing a new roll having dry adhesive applied to the web thereof up to desired speed by the action thereon of the running web from an'expiring roll, and moistening the adhesive while said new roll is rotating and when it has attained substantially press speed, whereby the adhesive is caused to adhere to the running web thus connecting the web from the new roll thereto and changing the feed to the new roll without stopping or materially slowing down the press.

9.. The method of joining the webs of successive rolls of paper supplying a printing press, which consists in bringing a new roll having dry adhesive applied to the web thereof up to desired speed, treating the adhesive while said new roll is rotating to cause it to become sticky, and producing pressure between said new roll and the web proceeding from an expiring roll, whereby the adhesive is caused to adhere to the expiring web thus connecting the new web thereto without stopping the press.

10." The method of joining the webs of successive rolls of paper supplying a printing press, which consists in applying to a new roll an adhesive having a normally non-adherent surface whereby surface contact with the new roll will not cause adherence of said adhesive, causing rotation of said new roll until the same attains desired speed just prior to the time said webs are to be joined, then applying solvent to cause said adhesive to present an adherent surface, and producing pressure between the new roll and the web running to the press fromthe exhausting roll whereby said adhesive is caused to connect said webs without stopping the press.

JOHN A. DUNLAP.

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