US1885262A - Mechanism for supplying webs of paper to a rotary printing press - Google Patents

Description

Nov. 1, 1932. A, HORTON 1,885,262

MECHANISM FOR SUPPLYING WEBS OF PAPER TO A ROTARY PRINTING PRESS Filed April 5, 1928 2. Sheets-Sheet l l h: I00 I 38 Patented Nov. 1, 1932 um-En STATES man-r J. neuron, or wmra rmmaimw ronx, asemnon To a. no: a me. 'or

PATENT OFFICE;

m I. Y A CORPORATION 01' m YORK 1:04: 1.. Ion surrnmewnrsor raraaroanorm! ram-nae muss Application fled April 5.1m. Serial Io. macs.

This invention relates to improvements in mechanism for supplying webs of paper to ingon the several webs will register cor- I means for automatically rectly when the are brought to ther at the folder. The we rolls become e austed and have to be renewed during the-press run, and

it is desirable that provision be made for. renewing them without stoppmg the press,

. rolls showmg the position of the parts when for it is important that there be no mterruption in the production of papers.

One object of the invention is to provide regulatinl'f the tension applied to the runmng web to Another object of the invention is to rovide means adapted to change the feed 0 the web running to the press from an exhausting web roll, to a reserve roll without stopping the press. 7

Another object of the invention is to provide an improved su port for a running roll and a reserve roll, t at can be used in a restricted space.

It is also an object of the invention to provide a web roll support of generally improved construction, whereby the device will be simple, durable, inexpensive in construction, and

convenient, practical, serviceable, and efli dent in its use.

With the foregoing and other objects in View, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts, and in 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 the spirit of the invention.

The invention has been-illustrated in its preferred embodiments in the accompanying drawings, wherein:

Figure 1 is a side view of the improved web roll support, partly broken away and partly in section.

Figure 2 is an end view of the tension and pasting portion of the device as viewedin the direction of the arrow 2 in Figure 1, the

view being taken on the line 2-2. e

Figure 3 is a view artly in section, taken on the line 34 of the tension device and other components of the invention.

Figure 4 is a view partly in section, of a portion of the pasting device as viewed on the line 44 of Figure .1, looking in the direction of arrow-4.

Figure 5 is a section through the pasting the rolls are separated, and in normal running position.

Figure 6 is a sectional view of one side gen 1 looking in the Y direction of arrow 3, and sho ws a portion-of of the support showing the tension brake drum and adjacent parts; and

Figure 7 is a view of a portion of the roll v starting mechanism as viewed in the direction of arrow 7 of Figure 1. Y

Referring to the drawings, 11 indicates a main support on top of which the base frame of a printing press may be mounted. The main support 11 carries a web roll support that comprises a shaft 12 and'a pair of arms, one of which is indicated at 13. These arms serve to support rolls of paper R1 and R2-at both sides of the frame support and from either side a web W1 or W2 may be fed to the press. It will be understood that another support similar to 11, is positioned to carry the other end of the shaft 12, and a second arm similar to the arm 13 is provided, so that shown, that supports the other end of the rolls. Adescription of one of these roll hold- -ing devices will therefore suflice for all. Tension devices for controlling the rolls while they are unwinding, also are carried on the ends of thearm 13 as shown, but it is unnec J essary to duplicate these on the rear. arm. The tension devices on both ends of the arm 13 being similar, the same reference numerals will be given.

are used for both, and but one description 7 As shown in Figures 3 and 6 the arm" 13 has a bracket 14 mounted thereon, that forms a bearing for the roll holding device and carries the tension brake mechanism. A brake pulley 15 is mounted to rotate in a bearing bushing 16, carried by the bracket 14;. a sleeve 17 slides in the arm 13, and has one side out to form the rack 18. Meshing with the rack 18, is a pinion 19, which when rotated, serves to cause an endwise motion of the sleeve 17, as will be hereinafter explained.

A spindle 20 is formed with an integral collar 21 and another collar 22 is secured to the spindle by a screw 23. The spindle is thus free to turn in the sleeve 17,- but endwise motion of either, relative to the other is pre vented.

Secured to the spindle 20 is a feather 23', that is loosely fitted to the bore of the pulley 15; hence, the spindle may be moved endwise in the pulley 15 and in the arm 13, but the feather causes the pulley to'rotate when the spindle is turned. The bracket 14 and pulley 15 and also the'portion of the spindle to the left of the collar 22 can be omitted from the rear arm 13. 1

In the means employed for supporting the web roll, the spindle 20 has an extended portion 24 that fits into the hollow core of the roll'and is tapered to facilitate its insertion therein. The feather 25 is secured to the tapered portion 24 of the spindle, and engages a slot in the core 26 of the web roll E2.

When the web roll is rotated it will therefore providing a convenient means of supporting the web rolls so they may be renewed readily. A locking device for the hand crank 28, is formed by the pin 29 which looks the crank to the arm 13 and holds the spindle 20 in the extended position. Means are thus provided for properly supporting the web roll so the web can be fed therefrom to the press.

Referring to Figures 1 and 3, a shaft 30 is supported in brackets 14 and 31 and serves as a pivot for a brake lever 32 having two short arms 33 and 34. A. brake band 35 is attached to the arm 33, extends around the pulley 15 and is connected to a threaded rod 36 which passes through a lug 37 depending from the bracket 31. The rod 36 is held by a hand adjusting nut 38. It will while loading the roll and pasting. The

brake mechanism just described need not be duplicated on the support carrying'the other end of the web r0 I V A floating roller running in a loop of the web is used for controlling the brake mechanism, so that the desired tension is automatically maintained on the web being fed to the press. In the embodiment of themvention shown, ashaft .39 iscarried in bearings. in the support 11, and secured to the shaft are arms 40 and 41 which carry the floating roller 43. An arm 42 is-also secured to. the shaft, and in the preferred construction has a forked member 44, which carries a sheave 45, and an elongated portion 46, on which a weight 47 may be adjustably secured.

The floating roll 43 will rise orfall as the tension on the web running to the press varies, and this motion is communicated to the. brake mechanism by means which may consist of a flexible cable 48, supported and guided by suitably placed sheaves 49 on the bracket 14, and 50 on the support 11. As shown in Figure 1, the cable is secured to the arm 34 that is carried on the right hand .end of the arm' 13. Fromrthereit is lead around the adjacent sheave 49, then up and around one of the sheaves 50, then down and around the sheave 45 that moves with vthe floating roll, then back and around the other sheave 50, then down and around the sheave 49 which is on the left hand side of the arm 13 and adjacent to the other arm 34 where the end of the cable is fastened. It will be understood that if the floating roller 43 is lowered by a slackening of the web, the tension on the brake bands 35 will be increased, l and if the roller is raised the tension will be holds the bearing block 52 in the raised posi-- tion and is limited in its action by the lock nuts 54 which are screwed on the threaded end of the stem 53.

The feature of the invention that provides means for pasting the end of the web of a reserve roll to the web from an expiring roll,

51 over which the web asaaaea asshowninthe drawingscom rises-aspha- "similar for rollers, similar arts are ining rollers and 56,

erating them. Other devices than rollers ec anism for opma be used however to provide an ab utment and a pressure member between which the webs can be pressed. As the'mecha'nism is are also secured to'the shaft 57 ,and to them "is fastened the upper pasting jaw 62. Thearms 58 and 59, loosely support the shaft 63 to whichare fastened the arms 64, 65, 66' an d 67. The pasting roller is rotatably supported in the arms 64 and 65, and the lower pasting jaw 68 isfastened to the arms 66. and 67.

A means for convenientl the pasting rollers into and onto operatlngositions may be a lever 69, secured to a s ort- I shaft 70 that has a bearing in the bracket 71,

secured to the main support ll. Shaft 70 carries a face plate 72 having an eccentric pin for pasting.

. 73, and a bar 74 serves'to connect the pin 73 to the shaft 63. It will thus be understood that operation of the lever 69 will turn the shaft 57 which carries the pasting rollers.

As shown in Figures 1, 2 and 5, the arms '60 and 61 that carry the upper pasting jaw are formed with'lugs 75, and'the arms 66 and 67 that carry the lower pasting jaw have lugs 76. Springs 77 abut against lugs 75 and 76 and bias the arms 60 and 66 and also arms 61 and 67 to press the pasting jaws62 and 68 together, thus providing means for holding the end of-the reserve web roll in readiness The pre erred mechanism for starting the Web rollhas a shaft 78 that is driven from some part of the press so that the relative speed of-the press .to the'peripherial speed of the roll is constant. The shaft has a hearing in the bracket 79 and'carries a sliding clutch member 80. Another shaft 81 has a bearing in the bracket 82 and carries a fixed clutch member 83 on one end and a universal joint coupling member 84.- on the other. A telescope coupling member 85 forms thelower member of the universal joint coupling. The hole in the coupling member 85 is splined and loosely fitted to the feathered shaft 86, thus allowing relative longitudinal motion, while providing means for driving the shaft 86. This shaft has a bearing in the bracket 87, and the mitre gear 88 is keyed to the shaft. The gear 88 meshes with the mitre gear 89, keyed on the shaft 90, which also has a bearing the bracket 87, thus the mitre gears are held in meshing relation. The shaft 90 is supported in bearings in a pair of arms one of which is shown and indicated at 91. These 3. arms are secured to a shaft 92 that is mounted wheels are preferab y driven at as? support 11. The as so has secured thereto one or more traction-wheels 94, or if debe substituted. These herial speed slightl lower than the spee e web runningto-t e press and are normally held inalralsed position and out-of contact with sired, a -.roller ma the web rollbya spring 95, secured to the bracket 71 and the lever 91.

A. means is provided, todisconnect the-- mechanism for starting the web roll when it is notin use. In'the preferred form, a rod 96 v is connected-to the lever 91 and slides freely through a hole in the arm 97, which is pivoted at 97 to the bracket 98, secured to the frame of the press. The free end of the arm 97 is .forked and engages with a groove in the 'c lutch member 80. The rod 96 has a collar 99 secured-to it,and a compression spring 100 is fastened to: the end of\the ma, In the position shown in Figure 1, this spring'pres'ses down on the lever 97 and holds the clutch member 80'- in' engagement with the clutchdrawings, it will be understood that in practice this mechanism is duplicated on the op-. posite side of the support. It will also be understood that instead of using traction wheels running directly on the web roll they may be replaced bypulleys driving belts which can be brought to bear on the surface of the roll. f 4

Although not shown it should be understood that means such as are shown in U. S. Patent Number 1,124,673 can be usedto rotate the shaft 12 in either direction and to the extent required to raise either end of the arm 13 sufiiciently to bring it to a positionwhere the roll starting mechanism can be engaged, and also to lower either end of the arm in order to bring the roll holding spindle into alignment with the center of a web roll carried on the type of truck generally used in newspaper press rooms. A web roll is loaded into the roll support, by raising the 'end of I the arm wherein the new roll is to be loaded,

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and the similar handle on the rear arm are operated to projectthe spindles and, by rais ing the arms the roll'will then be held so that it may be rotated for feeding the web to the press. v

Web roll supports of the rotating type heretofore used do not provide sufiiclent clearance under the arms, and at the sides, to allow a full web roll on a truck to be moved into place for loading. When using such supports it is therefore necessary to rovide clearance beyond the ends of the arms or passage of a truck carrying a full roll. A roll support occupies a space lengthwise of the press approximately equal to the length of a perfecting printing unit, and. it will therefore 'be understood that in multi-unit presses where the printingunits are arranged in line and placed quite close together, that roll supports that require loading space between each and the adjacent one, cannot be used, because it is impossible to mount them under the printing units and in vertical alignment therewith. Roll supports of the type herein disclosed, require no loading spaces between them and in a multi-unit press each support can therefore be mounted directly under the printing unit which it serves.

As shown in Figure 1, the web is lead from the web roll, between the pasting rolls 55 and 56, over the spring roller 51, under the floating roller 43, and from there it is, lead to the printing cylinders of the press. If the web running to the press tightens, the floating roller 43 is raised and this motion, as previously explained reduces the vpressure on the brake'band 35 and allows the web roll to turn more freely. Conversely, a slackening of the web results in increasing the brake pressure. In practice, a point of equilibrium is reached and. a constant tension on the web is thus automatically maintained. The tension may be varied by moving the weight at along the bar 46 to which it may be locked by any suitable means. Figure l of the drawings shows the mechanism with the parts in the relative position they occupy when the end of the new web roll is being pasted to the web running from the expiring roll. In the normal running position however, the levers 69 are both turned outward so the pasting rollers 55 and 56 are separated as shown in Figure 5.

Preparatory to renewing a web roll, a new roll, as R2 is placed in the support and an adhesive is applied to the outside surface a short distance from the end of the web. The pasting jaws 62 and 68 are separated by moving the arm 64 against the tension of the spring 77. The-end of the new web roll is then inserted between the jaws and drawn through until the portion on the other side of which the adhesive is applied is in contact with the roll 56. During this operation the tension on the web roll may be relieved by moving the lever 32 and looking it in the relieved position. The web roll is then turned backward if necessary to remove any slack and the aws are allowed to close when the- "web is drawn taut and held square. The end of the web extending through and beyond the jaws is then torn off.

When the web roll R1 that has been feeding to the press is nearly exhausted the arms 13 are turned it necessary to bring the web rolls into the position shown in Figure l. The

s ed of the press is then preferably reuced and the operator presses down on the lever 91. This action first engages the clutch members 80 and 83 and then brings the traction wheel 94 into contact with the web roll R2. The roll is thus turned and a loop formed Inasmuch as further horizontal.

and 66, and also between the arms 61, and 67 I thus causing the pasting jaws .62 and 68 to open as shown in Figure l, and release the end of the web.

As the motion is performed very quickly it will be understood that practically, as soon as the reserve web carrying the adhesive is pressed against the running web, the end of the reserve web is released from. the jaws and.

is carried forward with the old web into the press. The old web is then severed by any convenient means.

Pressure on the lever 91 is maintained and the traction wheel.94 continues to drive the,

web roll, but at a speed slightly below that at which the web is running into the press. In consequence, the loop belowthe roll is gradually taken up and when the web is nally drawn taut the operator releases the lever 91, disengaging the traction wheels from the web roll, As there is then but a slight diiierence between the speed of the web running to press and the peripherial speed of the roll, the latter is accelerated to the required speed without undue strain on the web. lhe lever 37 is then released allowmg the automatic tension mechanism to control the web roll and the press may be accelerated to full speed.

What I claim is."

1. In a mechanism for feeding a web to a prlnting machine, a roll support adapted to hold a running web roll and a spare web roll and movable to bring the rolls from loading position to running position, a pastlng mechanism including rollers supported on each side of the path of the web running to the machine and movable toward each other to press the end of the web from a new web roll against the running web, jaws or the like adjacent each of the rollers, adapt-- ed to hold the end of a web and arranged to open when the rollers are pressed together, and a normally inactive accelerating roller adapted to engage the periphery of the roll in running position and rotate it at a slower peripheral speed than the speed at which the web is taken by the machine.

2. In a web renewing mechanism for a printing machine, a first member having a tatably supported by the second member,

jaw, a second member pivotally connected to the first member and having a second jaw adapted to cooperate with the first mentioned jaw to hold a web end, a pasting roller romeans biasing the jaws together, and a second roller between which a running web and a web end may be pressed by the first mentioned roller to paste them together.

3. In a web renewing mechanism for a printing machine, a first member having a jaw, a second member pivotally connected to the first member and having a second jaw adapted to cooperate with the first mentioned jaw to hold a web end, a pasting roller rotatably supported by the second member, means biasing the jaws together, and a second roller between which a running web and a web end may be pressed by the first mentioned roller to paste them together, and operating means connected to the first member for sequentially pressing the web end against the running web and opening the jaws.

4. In a web renewing mechanism printing'machine, jaws or the like adapted to hold the end of a web and means to press the web end against a running web, and a web roll accelerating mechanism, comprising a traction member movable into engagement with the eriphery of the roll, a driving shaft connected chine a normally open clutch closable to operatably connect the shaft to the traction member, and means to close the clutch and engage the traction member with the roll; said traction member being driven at a speed that will rotate the web roll at a peripheral speed slightly slower than the speed of the running web. 4

In testimony whereof, I aflix my signature.

ALBERT J. HORTON.

for a to a rotating member of the ma-

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