US1716511A

US1716511A - Web-roll-shifting mechanism

Info

Publication number: US1716511A
Authority: US
Publication date: 1929-06-11
Anticipated expiration: 1946-06-11

Description

1 June 1929. H. v. BALL 1,716,511

WEB ROLL SHIFTING MECHANISM Original Filed Jan. 26, 1925 7 Sheets-Sheet 1 in. iid IIKI B J ATT'YS\ June 11, 1929. v, BALL 1,716,511

WEB ROLL SHIFTING MECHAN ISM Original Filed Jan. 26, 1923 7 Sheds-Sheet zw /zw' June 11, 1929. H. v. BALL.

WEB ROLL SHIFTING"MECHANI S M Original Filed Jan. 26, 1923 7 Sheets-Sheet 3 3 MWQM i w June 11,1929. Y H. v. BALL WEB ROLL SHIFTING MECHANISM Original Filed Jan. 26, 1923 7 Sheets-Sheet 4 A-f-rws June 11, 1929. H. v. BALL WEB ROLL SHIFTING MECHANISM Original Filed Jan. 26, 1925 '7 Sheets-Sheet INVENTOR June 11, 1929. v H. v; BALL.

WEB ROLL SHIFTING MECHANISM Original Filed Jan. 26, 1923 7 Sheets-Sheet 6' INVENTOR.

June 1 1, 1929. v L

WEB ROLL SHIFTING MECHANISM 7 Sheets-Sheet 7 Original Filed Jan. 26, 1923 INVENT OR ZM Patented June 11, 1929 UNITED STATES PATENT *OFFICE;

HARRY VINCENT BALL, or MONTREAL, QUEBEC, CANADA, assrenon, BY MESNE AS- SIG-NMENTS, TO B. HOE AND 00., Inc, or nnwroRK, n. Y., A oonrona'rron on NEW YORK.

WEB-ROLL-SHIFTING MECHANISM.

Application filed January 26, 1923, Serial No. 614,945.

This invention relates to certain improvements in web feeding mechanism, and is particularly applicable to feeding webs to printing machines though it may be used in other relations.

It is the especial object of the invention to provide an improved web feeding mechanism including supports for a spare roll and for a running roll, with'the web path so arranged thatthe runningweb may be brought into contact with the spare roll while running in substantially its normal feeding path, so that the running web may be brought bodily into contact with the spare roll and readily and quickly united therewith when the running roll is nearly exhausted so that no substantial movement of the web out of its runningpath is required to cause contact of the web and roll, and danger of web breakage from such cause is obviated.

It is a further object of the invention to provide such an improved web feeding mechanism which will include devices for moving the spare roll to the position occupied by an expiring roll, which shall be simple and inexpensive to operate and install and which may be used alone for a single press unit, or may be duplicated for use with as many press units as desired.

It is a further object of the invention to produce such a web feeding mechanism in which two or more of the mechanisms where more than one is employed, may be operated to simultaneously change the spare rolls from reserve to the running position.

A further object of the present invention to provide a construction in which fixed points of support are provided for the running rolls and in which the spare rolls are moved to running position by gravity means so to simplify the construction.

It is a further objectof the present invention to provide a construction whereby the tension on the running rolls may be 0011- trolled automatically to put the required tension on the rolls and prevent them from unwinding too fast and in which this tension maybe automatically lessened as the diameter of the roll decreases.

l Vith these and other objects not specifically referred to, the invention consists in certain novel combinations and parts, a preferred form of which is shown in the drawings, and the invention will be fully described Renewed April 7, 1927.

in connection with such drawings and the novel features then pointed out in the claims hereunto annexed.

In these drawings- Figure 1 is a diagrammatic side elevation, partly broken away of the improved web feeding mechanism, the arrangement being shown as employed with four printing units.

Figure 2 is a side elevation of the improved web feeding mechanism with the parts shown employed in feeding twopress units.

Figure 3 is an end View of one of the web feeding mechanisms partly broken away and partly in section.

Figure 4: is a view similar to Fig. 3 with the parts shown in another position.

Figure 5 is a side View partly in section and partly broken away of part of the construction shown in Fig. 3, the view being taken on the line 55 of that figure.

Figure 6 is a detail side view, partly broken away and partly in section the view being taken on line 66 of Fig. 4. I

Figure 7 is a detail sideview of part of the construction shown in Fig. 4, the view being takenon line 7-7 of that figure.

Figure 8 is a detail view, partly sectional and partly broken away of adevice for uniting the expiring web to a new web roll, the view being taken on line 88 of Fig. 6. 1

Figure 9 is a side elevation, partly broken away, of a modified form of roll control mechanism.

Figure 10 is a detail view of the operating cam and connection.

Figure 11 is a detail view looking in the direction of the arrow 11 in Fig. 10 with the parts in operative position.

Figure 12 is a similar view with the parts in inoperative position.

Referring now to these drawings, and first to Figs. 2, 3 and at, the various parts of the mechanism are supported from supporting frames 1 of any suitable configuration and side frames 2, supported from the supports 1.

The improved web feeding mechanism may be employed with either a single printing unit'or with as many units as there are in the press. These feeding mechanisms proper will beidentical and a detail description of one will sufiice for all, the general arrangement whereby a number of the feeding mechanisms may be used with a number of press units and simultaneously operated being hereinafter referred to. One of the improved mechanisms will be described in detail, and one such .mechanism is illustrated in Figs. 2, 3 and l of the drawings. Each of the mechanisms will include, generally speaking, a stand or support for a spare roll or rolls which is inexpensive, and which is capacitated to carry or support mechanisms for transferring a spare roll from a reserve to a running position.

Referring to these drawings, it will be understood that the mechanisms are duplicated on each side of the machine and thus but one side of the machine will be described in detail. In the figures referred to there are provided brackets 3 secured to the supporting frames 1, before referred to. These brackets 3 have a top rail 4-. on which are adapted to run the spindles 5 of the spare rolls, indicated by

numerals

6, 6. The rails l of these brackets are made of suiiicient length to accommodate any desired number of spare rolls, two such rolls being shown as supported thereon in the drawings. In the best constructions the rolls are fed or moved along the rails by gravity and to effect this, therefore, the rails are inclined slightly from the horizontal as shown in the drawings. In the construction illustrated where more than one spare roll is to be carried on a set of brackets, means are provided for stopping the rear roll so that the roll, for purposes hereinafter referred to, will be held in position on the rails out of contact with the roll in front of it. To effect this, a bar 7 is provided having a stop nose 8 which takes against the spindle of the second roll 6. This stop bar 7 is pivoted at 9 to the top rail t of the bracket so as to rock in the bracket. Beyond the pivot 9 the bar is provided with an extension 10 which carries in its end a roll 11, the purpose of which is herein-after referred to. The bar is normally rocked into stopping position by means of a spring 12 secured at one end to the under side of the bar and at its other end to the lower arm 13 of the bracket 8, before referred to.

The spare roll, as the roll 6, passes down the bracket rails to what may be termed the reserve position R which is at the inner end in Fi gs. 3 and l of the brackets, and the spare roll is held in this reserve position until it is needed for use, when it is moved or transferred to a running position as hereinafter referred to. In order that it may be thus held, a stop is provided which is in the form of a swinging segment 15 mounted on a rock shaft 16 supported in the top rails a of the brackets 3, before referred to. These segments are provided on each side of the machine and each segment is formed with a nose 1'? arranged to bear against a roll spindle. The other end of the segment is provided with a cam face 18 for purposes hereinafter referred to.

In machines embodying the invention in its best form, the spare roll, as 6, is trans ferred from the reserve position to the running position by gravity, means being employed to guide and control the roll as it moves from the reserve to toe running position. In the best constructions the nose 17 of the segment 15 will be held in locked position so that it is impossible to start the mechanism for unlocking the segment until the roll controlling means are in position to receive the roll. While various constructions may be employed for effecting this, in the particular construction illustrated, there is provided a controller in the form of a finger 19 (see 3 and 4), this finger forming one arm of a lever pivoted at 20 in the bracket 3, before referred to. The other arm of this lever 21 carries a roll 22 arranged when in locked position to take againstthe cam face 18 of the segment 15, before referred to, so as to prevent the segment from rocking and acting to hold the nose 1'? in locking position. This controller is rocked against a spring rod construction 23 secured to the arm 21 of the lever and the bracket arm 13, before referred to, this spring normally tending to throw the controller linger into operative position.

This controller is actuated to unlock the segment so that it can swing to remove the locking nose out of the way of the roll spindle in any suitable manner, but the operating connections will preferably include means whereby it will not be operated until the controlling means by which the spindle is controlled or retarded in its movement from the reserve to the running position, are in position to receive the roll spindle at the reserve position, and is the best constructions this control will be actuated by the spindle controlling means. I

Referring still to Figs. 3 and 4:, the running roll is marked by the numeral 2 1, this roll running in bearings 25 formed in a brack et 26 suitably secured as by bolts 2 to the frames 1, before referred to. This bearing forms the running position of the roll and is shown located below the rails 4 of the brackets 3, before referred to, and to one side thereof so that an incline will be provided for the spare roll 6 along which it moves from its reserve position to its running position and the descent of the roll more easily controlled.

These specific mechanisms by which the descent of the roll may be controlled and guided may be somewhat varied. In the particular construction illustrated, however, there is provided at each side of the machine a pair of rods 27, 28 (see Fig. 5) which form guides for traveller block 29, these traveller blocks having their inner sides formed with curved grooves 30 in which take the spindles 5 of the rolls. The rods 27, 28 are rigidly supported at their upper ends in curved bracket: 1 secured to the upper brackets 3, before referred to, and at their lower ends are supll l ported in extensions 32 of brackets 33 suitably mounted in the'frame of the machine, the rods being secured in any suitable manner as by nuts 34. Preferably springs 35 are arranged around the lower ends of the rods to form a cushion against which the traveller blocks may bear as they approach their lowermost movement. These blocks are raised and lowered by means of cables 30 taking into eyes secured in the blocks, these cables bein goperated in a manner hereinafterspecified.

These blocks travel up the rods to the po sit-ion indicated in Fig. 4, and in their travel strike against the controller fingers 19 rockingthcse lingers inwardly and rocking the lever arm 21 downwardly against the spring 23. This releases the roll 22 from the cam face 18 of the segment 15 and the segment is free to rock thus freeing the nose 1'? from the spindle 5 of the roll, and the roll rolls into the holding groove 30 of the blocks 29 and is ready for its descent to the bearing 25.

When this has occurred the parts are in the position shown in Fig. 4, and the roll has started in its descent from the reserve to the running position. The roll, as before stated, is supported in the blocks and is guided in its descent by the inner face 38 of the blocks taking against the inner inclined face 39 formed on the bracket 3, before referred to, the spindles rolling along. this face.

In the preferred construction the ends of the top rails 4 at the reserve position of the roll will be cut away slightly, and the spindle engaging face of the stop or nose 17 will be grooved as indicated at 300 in Fig. 3, to form a bearing for the spindle when in reserve position, and prevent the roll from backing up the rails when first rotated.

In the best constructions means are pro vided for guiding the spindles down the inclines while passing from reserve position to running position so as to prevent them from running oil the incline sidewise. \Vhile various constructions maybe employed for this, in the particular construction illustrated a guide track 40 shown in Fig. 5 is secured by bolts 41 (see Fig. 3) to the front walls 39 of the bracket 3, before referred to. These tracks co-operate. with margin adjusting devices shown as grooved pulleys 42 (see Fig.

on the roll spindles, which are used to adjust the roll widthwise to ensure the roll running to the printing unit in proper wldthwise position.

When theparts are in the position illustrated in Fig. 4, the reserve roll is about to start in its downward movement to the running position, the segment having been rocked to move the locking nose out of position. As the segment is thus rocked the cam face 18 bears against the roll 11, before referred to, and rocks this roll upwardly. This lowers the stop 8 and permits the second reserve roll 6 to start along the rails 4 of the bracket 3 toward the reserve position.

The sector may be rocked after the lock has been broken in various ways. Preferably, however, the means employed will include a latch or the like which must be released be fore the sector can rock. This segment hav ing been rocked is returned to locking position so as to receive a suceeding reserve roll after a reserve roll has started its downward movement to the running position, and this is 1 preferably done automatically. Vfhile various means may be provided for effecting this, in the construction illusstrated the rock shaft 16 has secured thereto an arm which at its other end is pivoted to a link 45; this link is pivoted in turn to one arm 46 of a lever pivoted at 47 on a stud in the bracket arm 13 of the bracket 3, before referred to. The other arm 48 of the lever is connected to a link 49, which at its other end is connected to an arm 50 on a rock shaft 51 journaled in extensions 52 of plates 53 suitably secured as by bolts 54 to the frames 1, before referred to, and extending across the machine. The link 49 has secured thereto at one end a spring 55, the other end of this spring being secured to an extension 56 of the bracket 26, before referred to. With this construction after the roll spindle has passed the end of the outer face of the segment the segment is free to rock and this rocking movement is effected by the spring acting on the links and levers referred to, this spring acting to throwthe segment into locking position, as shown in Fig. 3. As the segment rocks to the right, as shown in Fig. 4, the cam face 18 moves away from the roll 11 and past the roll 22 on the controller arm 25. This controller arm is then thrown into locking position by the spring 23 and the parts take the position shown in Fig. 3, the locking projection 8 being. again thrown into the path of a succeeding roll spindle, and the nose 17 again being projected into the path of a roll 011 the rails 4.

The roll releasing movement of the sector and levers is preferably prevented by a lock or check which is manually released. \Vhile various means may be employed, as shown, there is provided for this purpose a hand lever, marked 57, secured to the rock shaft 51, before referred to at one side of the machine. This lever is provided with a spring eatch501 operated by a hand grip 502. The catch 501 takes into notches 503 on a segment 504 fast on the frame of the machine. By releasing the catch and rocking this lever from the position shown in Fig. 3 to the position shown in Fig. 4, the parts may be actuated through the connections shown and described to rock the segment. t will be observed, however, that until the block 30 has moved the controller finger 19 inward any movement of the hand lever 57 will not operate the mechanism, such mechanism being locked by roll 2 2 bearing against the cam face 18 of the segment. It will thus be seen that the parts cannot be accidentally operated until the blocks 30 are in spindle receiving position, which is an important feature when handling heavy rolls. The action of the spring returns the handle to its normal position, in which it is locked by the catch.

As before stated, the running roll is carried in bearings 25 which are arranged oelow and to one side of the reserve position of the roll, that is, the end of the rails l of the upper bracket 3. In machines embodying the invention, means are preferably provided for removing the spindle of an expiring roll from the running bearings so thatthis will be out of the way when the spare roll reaches its running position. lVhile this may be effected in various ways, in the preferred embodiment of the invention, these bearings are so constructed that the core of the expiring roll may be ejected therefrom, and preferably in such a manner as to wind up the broken end of the short length of web that may still be attached thereto. lVhile various specific constructions of effecting this may be employed, as illustrated the bearings 25 are in the form of hooks having bearing recesses 58 and open sides indicated at 59. These bearings are mounted so that they may be rocked to permit the expiring core to be dropped out of them. The core after it has dropped out is guided down a guide face 60 of the bracket 26, before referred to, this face 60 extending toward the projections 32 of the bracket 33,1eaving a passage 61 therebetween. The bracket 33 has a sloping extension 62 ending in a stop 63. When the expired core is dropped out of the bearings it passes down the guide face 60 through the passage 61 and rolls along the incline G3, the rotation thus given the roll being such as to wind up any loose web on the roll.

Various means maybe employed for rocking the hearings to expel the expired core, it being understood that the core is expelled after the web running therefrom has been severed, as hereinafter referred to.

In the particular construction illustrated, the rockingof the bearings is effected by the same mechanism heretofore described by which the segment 15 is rocked to take the 17 out of the way of the roll spindle, and as shown includes an arm 64 connected to the hearings, this arm being connected to a link 65 which in turn is connected to the arm 415. before referred to, t the point 66. llith this construction after the block 30 has been drawn to its upper spare roll receiving position, the controller finger and segment are operated as before described. This operation of the segment through the links rocks the bearings 25 to the position shown in Fi 4, and the blocks being out of the way, the expiring roll core is free to pass down the incline to the receiving bracket 33 and brings up against the stop 68, as shown in Fig. 4. The downward movement of the spare roll past the segment permits the return of the segment to locking position and this returning movement again swings the bearings 25 to roll receiving position the parts assuu'iing the position shown in F 3. With such a construction a very simple and efiicient mechanism for moving thespare roll from reserve to running position has been provided and in which the riddance of the expiring roll is quickly effected.

llith the arrangement described of the running roll bearings located below and to one side of the point of support of the re-- serve roll, as the roll decreases in size the normal running path of the web is automatically moved inwardly toward the spare roll so that when the web about to expire from the rung roll, shown in Fig. 4, the normal path of the web brings it against or almost against the spare roll. lVhile dr's way of effecting this is the preferred one, result may the same be obtainee in other way This construction results in a very simple construction and quick operation of making the splice without the use of the complicated shifting roller mechanisms usually GHIPlOyQil for shifting the wee path f om the running roll to the spare roll the expiring web being already in position for effecting the paste. Thus but a short time is required to do this, which of greatimportance in these web feeding mechainsms.

In the operation of the machine when the running roll is nearly expired the press is stopped and the running web is, as shown in i l, in contact with or very close to the spare roll. Paste may now be applied at the point :0, see Fig. 4, on the spare roll and the expiring web pasted to the spare roll at this po nt, the expiring web below the paste be- I, then broken or out Any suitable means may be provided for effecting this, but preferably there will be provided a device by which :1 splice may be effected so that it will he unmvcessii to throw away as waste paper which has been printed at this point, a splice, known as a mill splice being made. l fhile this may be effected in various ways, there is secured to one side of the frames 1, before referred to, a bracket, indicated at 68. This bracket has secured at the bottom thereof a plate 69 carrying ears 70 in which is jour- Lil roll, and in the best constructions this tension is automatically regulated depending on the diameter of the roll, being greatest when the new roll is used and lessened as the roll decreases in size. lVhile these tension devices may be of various characters, in the con struction illustrated, there are provided a pair of belts 76, 77 (see Fig. These belts and the means for operating them are the same and but one will be described. Each of these belts passes over a driven pulley 78 mounted on a shaft 79 extending across the machine and supported in bearings in extensions on the plate 69, supported from the bracket 68, before referred to. This shaft has a gear 80 meshing with a gear 81 on a shaft 82 suitably driven from any moving part of the machine at a speed slightlyless than the speed of the web, so as to exert a slight frictiona'ltension 011 the roll and prevent the roll from unwinding too fast.

The lower end of the belts pass over idler pulleys 83 journalled in arms 84 secured as by bolts 85 to blocks 86 mounted to swing on the shaft 79, before referred to. With this construction as the roll decreases in size the belts swing in following the roll and exert a controlling tension on the surface of the roll. In the best constructions means are provided for automatically counterbalancing the weight of the pulleys and arms as the roll decreases in size so as to decrease the pressure exerted by the belts. lVhile the particular means for effecting this may be varied. in the particular construction illustrated there is a weight 87 for each of the belts, these weight-s being mounted to move with the belts so as the belts move inward the pressure e terted by the weight decreases and the tension on the belt also decreases, the weights exerting their greatest pressure when the roll is of its major diameter. These weights are mounted to have a sliding movement so as to move inward as the belts move inward. As shown the weights are mounted on rods 88 cari'ed in blocks 89 supported from the blocks 86, to which as before stated the arms 8% are secured. these blocks 89 thus moving with the arms. The weights have a friction fit with the rods so as not to slide along the rod by their own weight, and means are provided for sliding them. In the particular construction illustrated for effecting this, the block 89 at its end has secured thereto a link 90 provided with a stud 91 at its other end which works in a slot 92 of a slott-ed'arm on a rock shaft 9% fast in a bracket 95 supported from the bracket 68, before referred This rock shaft 94 has also secured there to a bent arm 96 which at its free end is provided with a fork 97 which takes over a pin 98 secured to the weight. As the block 89 is rocked the segment 93 is rocked through the link 90, and through this connection the bracket arm 86 is caused to slide the weight along the rods 88. The blocks89 are provided at each end with stops 99, 100 for pre venting the weight from sliding off the blocks. It will be observed that on the inward movement of the weights, that is the movement toward the web, the weights pass beyond the pulley arms 84 and the centers of the pulleys 83. These weights thus counterbalance the weight of the pulley and the arms, so that the tension is taken off the belts and the belts do not interfere with the delivery of the expired roll spindle, as heretofore described.

In the best construction, means are provided for guiding the web from the running posi tion to the press unit so that when the running roll is of large diameter the web will be kept away from the roll in the spare position except when it is desired to make the paste. This may be accomplished in various ways. As illustrated, there is-provided a roll 101 carried in arms, one of which is shown marked 102, fast on. a shaft 103 suitably supported in the brackets 68, before referred to. In the best constructions to provide for rolls of varying major diameters, means are provided for adjusting the position. of this roll. As shown theshaft 103 is a rock shaft and is provided with arms 104 having slots 105 in which takes a locking pin 106 fast on the bracket. By swinging this arm-105 by means of a handle 106 provided for the purpose, the shaft 103 will be rocked and the position'of the roll 101 adjusted as desired.

The roll change or web feeding mechanism described may be used in various ways. One such mechanism may be used for a single unit, or such a mechanism may be used for all the units of a multiple unit machine, or as many as maybe desired. Where two or more of these mechanisms are employed preferably connections will be provided whereby all the cores of the expiring rolls may be simul-. taneously discharged and all the new rolls simultaneously moved into a running position so that but one stoppage of the press will be necessary for changing a plurality of the rolls. Such arrangements have been illustrated in the drawings. Fig. 1, showing an arrangement which may be employed *ith four units, and Fig. 2 an arrangement which may be employed with two units. These figures also show an improved mechanism for controlling the transfer of the rolls from the reserve position to the running position and also means whereby the controllingimechanism may be employed for hoisting the spare rolls on to the reserve roll supports.

Referring first to Fig. 1, thcreisshown four printing units, A, B, C, D, each including form cylinders 107 and impression cylinders 108, the usual train of ink rolls 109 being provided. for the form cylinders. These press units have supporting frames 110 supported from side frames 2, before referred to, and web rolls and the web feeding mechanisms are preferably shown arranged below these frames, the webs being guided to the press mechanisms from suitable guide rolls 112. Four such web feeding mechanisms are shown in Fig. 1 marked generally 113, 114, 115, and 116.

In accordance with the invention means are provided for operating the cables 36 by which the blocks 29 for lowering the rolls to position are controlled. Vhile these means may be of various characters, in the construction shown in Fig. 1, a single means is employed for actuating all four of the cables 36. While these means may be varied, as illustrated there is provided a cylinder 11? suitably connected with a source of compressed air or other fluid under pres ire. This cylinder is connected at each end wi h cables or chains 118 which pass over gears 119 on shafts 120 suitably mounted in the frame of the machine. Shorter chains or

cables

121, 122 pass over gears 123, 124 on

shafts

125, 126, also suitably journalled in the frame of the machine. The

shafts

120, 125, 126 carry sheaves 127 over which the cables 36 pass. As th cylinder is operated one way or the other the sheaves are turned and the cables raised or lowered simultaneously.

The mechanisi 1 for releasing the segments 15, before referred to, is also operated simultaneously. To e fect this the arms 50 are connected by means of a cable 128, whereby the operation of one operates them all and the niechanis is are simultaneously thrown into e m-ration.

In the best construct-ions the cables 36 are also employed to lift the spare rolls to their position on the rails 4, and as shown these cables pass around guide rolls 12S) and are provided at their ends with hooks 130. These hooks are as shown arranged. to be lowered. to take the rolls indicated at 131 from off trucks indicated at 132 so that as a roll is moved from the reserve to running position the roll 131 will be lifted up on to the rails.

In the construction shown in the left hand end of Fig. 1.. one hook may be used to supply two mechanisms, or if desired, the construction shown in the right end of Fig. l, and in 2 may be employed, in which two hooks are employed. The ends of the b ackets are preferably, indicated in the figures, provided with hinged portions 133 which will yield upwardly to permit the roll spindles to pass them so that the rolls may be lifted vertical-- ly from the trucks on to the rails.

In Figures 9 to 12 inclusive there is illustrated a modified form of mechanism for operating the swinging sector 15 and the lower bearing 25. In this construction the hand lever 57 and certain of the other connections heretofore described for effecting this are omitted, the parts being manipulated from one of the sheave shafts over which the controlling cables 36 are operated.

In the particular construction shown in these figures, this modification is illustrated as being applied to a two-roll unit. It will be understood, if desired it may be employed with a one-roll unit or a machine in which there are more than tworoll units.

Referring now to the particular construction illustrated, the arm 444 on the sector rock shaft 16 is connected at one end with the link 140, this link at its other end being connected to the arm 64 from which the bearing 25 is operated. Connected to the arm 444 at one side of the machine is a rod 141 having a slotted end 142 receiving one of the sheave shafts 126. This rod carries a cam roll 143 which lies in the path of a cam 144 mounted on the shaft 126, so as to slide sidewise thereon, by means of a key 145. This cam is provided with a hub 146 having a groove 147 into which takes pins 148 carried on the ends of the arms of a forked lever 149. The cam 144 is normally kept out of the path of the cam roll 143 by means of a spring rod construct-ion 150 secured to the forked lever 149, this spring rod being suitably supported in brackets 151 secured to the frame of the machine.

The forked lever 149 may be variously supported and operated to slide the cam 144 sidewise on the shaft 126 to bring the cam into he path of the cam roll 143 on the rod 141. In machines where the mechanism is to be employed with but a single roll unit, the forked lever 149 may be carried from a stud 152 in a bracket 153 secured to the frame of the machine, the forked lever having a hub 154 to which is connected a short lever this short lever in turn being secured to a controller 156 by which the forked lever may be operated to effect the engaging movem nt of the cam 144.

In constructions, however, in which two or more roll units are employed, all the controllor levers will preferably be mounted so that they can be simultaneously operated. Such a construction is shown in Fl 9, in which the controller levers are mounted on "the shaft 15? carried in brackets 158 secured to the frame of the machine. lVhen this construction employed the controller 156 will be secured to a short lever 159 carried on a block 160 fast on the shaft 157, just referred to, by which the shaft n'iay be rocked to cause the forked levers 149 to effect the sliding movement of the cam 144. The controller 156 may be a cable, chain, cord, or the like, and may be operated either by hand or in any suitable manner, and may lead to any desired or convenient point in the machine, this control being illustrated as broken away so as to indicate this.

lVhile the invention has been described in its preferred form and as including a number of features, it will be understood that various changes may be made in the specific form and arrangement of the parts, and that the invention is not limited to such form or arrangement, and it will be further understood that certain features of the invention may be omitted if desired or required by the exigencies of any particular press room.

.Vhat I claim is:

1. In aweb feeding mechanism, the combination of a frame having a fixed support for a spare roll, a second frame having a fixed support for a running roll located below the spare roll support, means whereby the spare roll may move by gravity from its support to the running roll support, and means for controlling the downward movement of the roll.

2. In a web feeding mechanism, the combination of a fixed support for a spare roll, a roll stop on the support, a fixed support for a running roll located below the spare roll support, means for moving the roll stop out of the path of the roll, means whereby the spare roll may move by gravity from its support to the running roll support, and means for controlling the downward movement of the roll.

3. In a web feeding mechanism, the combination of a fixed support for a spare roll, a roll stop mounted in the path of the roll on the support, a fixed support for a running roll located below the spare roll support, means for locking the roll stop in operative position, means for breaking the lock, means for moving the stop out of operative position, means whereby the spare roll may move by gravity from its support to the running roll support, and means for controlling the movement of the roll.

at. In a web feeding mechanism, the combination of a fixed support for a spare roll, a roll stop in the path of a roll on the sup port, a fixed support for a running roll located below the spare roll support, means vfor locking the stop in operative position,

means for moving the stop out of the path of the roll, means whereby the spare rollmay move by gravity from its support to the running roll support, means for controlling the downward movement of the roll, and connections actuated by the controlling means for breaking the lock to permit the stop to move out of operative position. v

5. In a web feeding mechanism, the combination of a fixed support for a spare roll, a roll stop mounted in the path of a roll on the support, a fixed support for a running roll located below the spare roll support, means whereby the spare roll may move by gravity to the running roll support, means for locking the stop in operative position,

means for controlling the downward movement of the roll, and a controller operated by contact with the controlling means to break the lock and permit the stop to move out of operative position. i I

6. In a web feeding mechanism, the combination of a fixed support for a spare roll, a pivoted roll stop mounted in the path ofa roll on the support, means for locking the stop in operative position, a fixed support for a running roll located below the spare roll support to which the spare roll moves by gravity, means for controlling the movement of the roll, and a pivoted controller connected with the locking means extending into the path of the controlling means and operated thereby to break the lock and permit the stop to swing out of operative position.

7. In a web feeding mechanism, the combination of a frame having a fixed support for a spare roll, a second frame having a fixed support for a running roll located below the spare roll support, a track down which a spare roll may move by gravity to the running roll support, means for controlling the downward movement of the roll along the tracks, said means including devices for engaging the roll spindle, and pressure operated means for operating the controlling devices.

8. In a web feeding mechanism, the combination of a frame having a fixed support for a spare roll, a second frame having a fixed support for a running roll located below the spare roll support, means whereby the spare roll may move by gravity to the running roll support, and means for discharging an ex pired roll spindle from the running roll support.

9. In a web feeding mechanism, the combination of a fixed support for a spare roll, a support for a running roll located below the spare roll support including rocking bearings, means whereby the spare roll may move by gravity to the running roll support, means for controlling the downward movenent of the roll, and means for rocking the hearings to discharge an expired roll spindle.

10. In a web feeding mechanism, the combination of a fixed support for a spare roll, a support for a running roll including rocking bearings, means whereby the spare roll may move by gravity to, the running roll support, means controlling themovement of the roll, a roll stop mounted in the path of a roll on the spare roll support, means for moving the stop out of operative position, and connections between the stop and the running roll bearings whereby as the stop is moved out of operative position the bearings are operated to discharge an expired roll spindle.

11. In a web feeding mechanism, the combination of a fixed support for-a spare roll having top rails along which a roll may move by gravity to reserve position, a roll stop on the support in the path of the advancing roll,

means for locking the stop in operative position, means for moving the stop out of the path of the roll, a fixed support for a running roll located below the spare roll support, means whereby the spare roll may move by gravity to the running roll support, means for controlling the movement of the roll, and connections actuated by the controlling means for breaking the lock to permit the stop to move out of operative position.

12. In a web feeding mechanism, the combination of a pair of brackets having inclined top rails for supporting a spare roll, sharply inclined side-rails down which a spare roll may move by gravity, a stop for holding a spare roll on the top rails, and means for moving the stop out of operative position to permit the roll to move down the sharply inclined tracks by gravity to a position below the top rails.

13. In a web feeding mechanism, the combination of a support for a sparc roll, means for looking a spare roll in reserve position on the support a running roll supportto which a roll may move by gravity, means for controlling the movement of the roll, and connections operated by the controlling means for unlocking the spare roll.

14. In a web feeding mechanism, the combination of a support for a spare roll, means for looking a spare roll in reserve position on the support, running roll support having swinging hearings to which a roll may move by gravity, means for unlocking the spare roll, and means for simultaneously swinging the bearings to discharge an expired roll spindle.

15. In a web feeding mechanism, the combination of a frame having a fixed support for a spare roll, a second frame having a support for a running roll located below fieltl in advance of the support of the frame, means whereby the spare roll may move by gravity to the running roll support, and means for controlling the downward movement of the roll.

16. In a web feeding mechanism, the com bination of means for locking a roll in reserve position, means whereby the roll may move to a running position by g 'avity, means for controlling the movement of the roll, and means actuated by the controlling means tor breaking the lock.

17. The combination oi means for supporting a running roll and a spare roll in otliset relation with respect to each other, and means whereby the running web may be brought into contact with the spare roll when the running roll is about to expire, without manipulation of the web.

18. The combination of means for supporting a pluralit of sets of rolls each including a running roll and a spare roll spaced apart and so arranged that a web from the running roll is bodily moved to a pasting position closely adjacent the spare roll by the decrease in size of the running roll without n1anipulation of the web or either roll, and means under a common control whereby the spare rolls of each setmay move simultaneously to the running roll supports after the paste is made.

19. The combination of means for supporting a plurality of sets of rolls each including a running roll. and a spare roll spaced apart and so arranged that a web from the run ning roll is bodily moved to a pasting position closely adjacent the spare roll by the decrease in size of the running roll, and means under a common control whereby the spare rolls of each set simultaneously move by gravity to the running roll supports after the paste is made.

20. The combination of a frame htving a fixed support for a running roll and a fixed support for a spare roll so arranged with respect to each other that a web from the running roll is bodily moved to a position closely adjacent the spare roll at the time the runing roll is about to expire.

21. T 1e con'ibination of means for supporting a plurality of sets of rolls each ineluding a running roll and a spare roll spaced apart and so arranged that a web from the running roll is bodily moved to a pasting position closely adjacent the spare roll. by the decrease n size oi the running roll, means under common control wl1ereby the spare rolls of each set simultaneously move b gravity to the running roll sugports alter the paste is made, and means for simultaneously discharging the expired roll spindles.

In a web feeding mechanism, means for supporting a running roll and a spare roll, a pathway for the running web, means whereby the ob may be brought into contact with the spare roll while running in substantially its normal path so that it may be united ith the spare roll web as the running roll is about to expire withut manipulation of theweb or either roll, and means whereby the spare roll may move to the runoi ion of means for supporting plurality of sets of rolls each including a running roll ind a spare roll spaced apart and so arranged that a web from the running roll is bodily moved to a pasting position closely adjacent the spare roll by the decrease in size of the running roll without manipulation ofthe web or either roll, and means for effecting a movement of the spare rolls to the running roll supportsaft'er the paste is made, said means mcludmg a controller common to the setsof rolls.

25. In a web feeding device, the combina tion of means for supporting'a running roll and a spare roll sothat the spareroll may be moved to the running roll support by gravity, a fluid pressure controller, and connections from the controller engaging the roll for controlling its downwardmovement.

26. In a web feeding device, the combina 7 tion of means for supporting a running roll;

and a spare rollso that the spare roll may be moved -to the running roll support by gravity, a fluid pressure controller, connections from the controller e'ngagingxthe roll for controlling its downward movement, and means for discharging an eXpiredroll spin-V dle while the spare roll is moving to the running roll support. a o

27. In a web feeding device, the combination of means for supporting a plurality of sets of rolls each including a running roll and a spare roll, said support being arranged so that a rollmay be moved from the spare roll position to the running roll position by grav ity, retarding devices for each set of rolls for controlling the downward movement of the rolls, a fluid pressure controller, and connections from the controller to the retarding device whereby they may all be operated simultaneously.

a spare roll, and means for effecting aJmovep ment of the spare rolls to the runnlng roll supports, said means including a power op erated controller common to the sets of rolls.

tion of means for supporting a plurality of sets of rolls each including a'running roll and V a spare roll, and means for effecting a move- I ment of the spare roll to the runn ng roll support, said means including a fluid pressure controller common to the sets of rolls.

31. ,In a web feeding device, the combination of means forsupporting arunning roll and a spare roll so that the spare roll may be moved to the running roll support by gravity,

30. In a web feeding device, the combinaa power operatedcontroller, and connections from the controller engaging the roll foigoY- erning the downward movement thereof. j

v 32; In a web feeding device,the combination of means'for supporting a plurality of sets of rolls each including a running roll and said means includin a controller common to the sets of r'olls,and means" controlled'by the spareroll moving means whereby the'eX- pired roll spindles of all the sets are'simulf taneously discharged.

v 33. In a web feeding device, the combination of means for supporting aplurality of sets of rolls each including a running roll a spare roll,means for effecting a movementv of the spagreroll to the running roll supports, 1

and a spare roll, means for effecting a movement of the spare rolls to the runningroll supports, said meansincluding a fluid pressure controller common to the sets of'rolls,

andmeans whereby the expired roll spindles of all the sets are simultaneously discharged.

34. In a. web feedingdevice, the combina tion of means for supportlng-a runnlng roll and a spare roll so that the spare roll may be controller for governing the downward move- .moved to the running roll support by gravity, controller, and connections from the ment of the roll and for raising a second spare 7 roll tothe spare roll supportwhile the. first spare roll is moving to the runningroll support V 35. In tion of means for supporting a running roll and a spare roll sothatthe spare roll, may be a web feeding device, the combina moved to the running roll support by gravity, a fluid pressure controller, and connect t1ons from the fluid pressurecontroller for governing the downward movement of the roll and for r aisinga second spare roll to the spare roll support whilethe first spare roll moving to the running rolljsupport. v 36. In a web feeding device the combination of means forjsupporting'a running roll and a spare roll so that the spare roll maybe moved to the running roll support by graviity, a fluid pressure controller,a cable operated by thecontroller for lowering the spare roll to the running roll support and for raising a second spare roll to the spare-roll suport.

37. In a web feeding aviee, the emblem tion of means for supporting a plurality of sets of rolls each; including afrunning ro'll anda spare roll, means for effecting a 'mo've'- ment of the spare rollsto the'running roll supports, said means including a controller common to the sets of rolls, and connections 7 from the controller for governing the downward movementof the spare rollsto the running roll supports and for-raising other spare rolls to the spare roll supports. 7

38. In a web feeding device, the combination of aframe having a fixed support for a spare. roll, a fixed. support a running 1:011.

arranged below and toone side of the sup port for the spare roll, whereby the web from the running roll is bodily moved into position to be joined with'the spare roll by the decrease in size of the running roll, and pressure operated feeding means for feeding the web from the running roll.

39. In a web feeding device, the combination of 'a frame having a hired support for a spare roll, afixed support for a running roll arranged below andto one side of the support for the spa're'roll, whereby the Web from the running roll isbodi'ly moved into position to be joined with'the spare roll by the decrease in size of the running roll and pressure operated means iorfeeding the web from the running roll with apressure diminishing as the running roll decreases in slze.

40. In a web feeding devlce, the combina- 'tionof'a-support for a spare roll on whicha roll is held normally-locked, a support for a running r011 including rotating bearings 10- catedtherebelow and to which a roll may be moved from the spare roll support by gravity, travelling retarding devices for retarding the movement of the roll, and means for unlocking the'locki-ng mechanism so that the retarding devices may be operated and simultaneously rotatmg'the bearings to discharge "an expired roll.

41. In a web feeding device, the combination of a supportfor a spare roll on which a roll is held normally looked, a support for a running roll including rotating bearings 10- cated therebe'low and to'which a roll may be moved from the spare rollsupport by gravity, travelling retardingvde'vices for retardingthemovement of the roll, and power operated means for unlocking the locking mechanism so that theyretardin'g devices may be operated and simultaneously rotating the parts to locked position and rotating the hearings to roll receiving position after the retarding "devices have begun to operate.

43. Ina Web feeding device, the combination of a suppor t for a spare roll. locking devices for holding the roll in lo'ckedposition on the support, a running'roll support having rocking bearings,'1evers connecting the lockingfdevices and the rocking bearings, means formoving the levers to unlock the locking devices and rotate the bearings, and spring means whereby the spare roll may means for returning the locking devices to locked posltlon and the hearings to roll rerunning roll, and a guide roll over which the webfrom the running roll runs.

45. In a web feeding mechanism, a frame having a support for a spare roll, a second frame havinga support for a running roll arranged below and to one'side of the frame for the spare roll whereby the running web .is caused to move bodily toward the spare roll as the running roll decreases in size, and a guide roll over which the web from the running roll runs.

46. In a web feeding mechanism, the combination of a support for a spare roll a support for a running roll located below and to one side oi the spare roll support whereby a web from the running roll is bodily moved to a pasting position closely adjacent the spare roll, and means for moving the spare .roll to the running roll support after the paste is made.

47. In a web feedingmechanism, the combination of a fixed support for a. spare roll, a fixed support 'for a running roll located below and to oneside of the spare roll support whereby a web from the running roll may be bodilymoved into pasting position closely adjacent thespare roll by the decrease in size of the running roll and means whereby the spare r011 may move bygravity to the running roll'support.

48. In a .web feeding mechanism, means for supporting a running roll and a spare roll spaced apart and so arranged that a Web from the running roll is bodily moved into a position to be oined with the sparero ll at the time the runningr'oll is about to expire, wilthout manipulation of the web or either r0 1.

49. In a web 'feeding mechanism, a frame having a support for/a spare roll, and a support for a running rollarranged. below-and to one :sideof the support for the spare roll so as to cause the runningweb'to mov'ebodily into a position to be joined with the spare roll as the running roll is about to expire, wiltlhout manipulation of the web or either r0 50. In a 'wcbfe'eding mechanism, means for supporting a'run'ning roll and a spare roll spacedapart and so, arranged that a web from the running roll is bodily moved intoa position to be joined 'with'the spareroll as the;

running roll is'ab'out to expirawithout manlpulationof the Web or either roll, and 7 move to the running roll "support.

51. In a web feeding mechanism, a frame constructed to support a running roll and a spare roll in position adjacent the running roll, and a guide roller for the running web supported in such relation to said rolls that when said running roll has become exhausted, or nearly exhausted, the feeding path of the web becomes tangent or approximately tangent, to the peripheral surface of the spare roll. I

52. In a web feeding mechanism, a running roll, a spare rollmounted adjacent the running roll, and a guide roller for the running web so located with relation to the spindles of said rolls that the running path of the web from the nearly exhausted running roll to the guide roller passes the spare roll inposition to effect a splice without shifting the position of the web path or the spare roll.,

53. Ina web feeding mechanism, a frame having a support for a spare roll, and a support for a running roll arranged below and to one side of the support for the spare roll so as to cause therunning web to'move bodily to a position closely adjacent the spare roll as the running roll decreases in size.

54. In a web feeding mechanism, means for supporting a running roll and a spare roll spaced apart, and a guide roller for the web from the running roll, at the other side of the spare-roll from that on which the running roll is located, positioned and arranged to cause the web path to liein position closely adjacent a spare roll so as to make an instantaneous splice with-the spare roll, at least when the running of the web has nearly exhausted the running roll.

55. In a web feeding mechanism, a running roll as the the spare roll as the running roll approaches below the former, and means for supporting the guide roller relativel to said rolls such that the feeding path of the web from the running roll clears the periphery of the spare roll during the ma or portion ofthe period a required to unwind the web from the running roll and becomes tangent or approximately tangent to the peripheral surface of the spare running roll approaches exhaustion.. 7 f j 1 56. In a web feeding mechanism, a fixed frame, a running roll and spare roll supported on said frame, and a guide roller for the running web supported on said frame in a plane above the plane of the spindle of the spare roll and spaced laterally therefrom at its Web path side, whereby the Web path fromthe running roll to the guide roller clears the spare roll during the major portion of the period required to unwind the web from the running roll and becomes tangent or approximately tangent to the peripheral surface of exhaustion.

' 57. In a web feeding mechanism, a running I roll, a guide roller for the running web from said roll, a spare roll intermediate said run,-

ning roll and guide roller, and supports for 1 HARRY VINCENT BALL 1