US3062467A - Controls for web splicing apparatus - Google Patents

Description

Nov. 6, 1962 c. w; CHASE ETAL 3,

CONTROLS FOR WEB SPLICING APPARATUS Original Filed April 21, 1955 '7 Sheets-Sheet l INV TORS. commzzezl /z 6 am JJadmozwd w a /me l/Pealaam W%,HM%ZZ#M@= c. w. CHASE ETAL 3,062,467 CONTROLS FOR WEB SPLICING APPARATUS Original Filed April 21, 1955 Nov. 6, 1962 7 Sheets-Sheet 2 Nov. 6, 1962 c. w. CHASE ETAL 3,062,467

CONTROLS FOR WEB SPLICING APPARATUS Original Filed April 21, 1955 7 Sheets-Sheet 3 Nov. 6, 1962 c. w. CHASE ETAL CONTROLS FOR WEB SPLICING APPARATUS 7 Sheets-Sheet 4 Original Filed April 21, 1955 Nov- 6, 1 6 c. w. CHASE ETAL 3,062,467

CONTROLS FOR WEB SPLICING APPARATUS Original Filed April 21, 1955 7 Sheets-Sheet 5 INVENTORS. Z/aZ A Cfiaae Wm JJW a/mew wwmw Nov. 6, 1962 c. w. CHASE ETAL 3,062,467 CONTROLS FOR WEB SPLICING APPARATUS Original Filed April 21, 1955 '7 Sheets-Sheet 6 INVENTORS.

Cb'donZ/(ZMC 2 61M fig. amefPedamp/n Moff f h wn, "@1421.

Nov. 6, 1962 c. w. CHASE ETAL 3,0

CONTROLS FOR WEB SPLICING APPARATUS Original Filed April 21, 1955 '7 Sheets-Sheet 7 PDSX'E POX P 1 PDEX -4' a M INVEN 0R5:

am QM wQQA/AMMA United States atent 3,062,467 Patented Nov. 6, 1962 ice This invention relates in general to web splicing apparatus of the general type employed to make flying pasters in newspaper presses. More particularly, the invention has to do with the control of the web-deflecting means and web-severing means which respectively and successively shift a running web against the paste pattern on a web roll and cut the web drawn from an expiring roll. This application is a division of applicants copending application Serial No. 502,923, filed April 21, 1955, now Patent 2,963,234.

It is the general aim of the invention to simplify the construction of controls for sequentially actuating webdefiecting brushes and web-severing knives, and yet to achieve enhanced and more reliable timed operation of such components.

Another object of the invention is to cause severing of an old web before a new roll executes a complete revolution after the web is pasted thereto, thereby minimizing the amount of double-thickness web moved through a press. This reduces the possibility of impairing the press operation, and the need to remove more than one or two products, e.g., newspapers, which are spoiled by the double-thickness portion of the web.

More specifically, it is an object of the invention to phase accurately the actuation of deflecting means which press the running web against the new roll, and the actuation of knives which sever the old web from the expiring roll, with reference to the adhesive-coated leading edge of the new roll web by controlling the actuation of both from a single set of electrical contacts which are opened and closed by a cam rotating with the new roll itself.

Other objects and advantages will become apparent as the following description proceeds, taken in conjunction with the accompanying drawings, in which:

FIGURE 1 is a schematic diagram which is partially mechanical, electrical and pneumatic in form, illustrating the over-all organization of web-splicing apparatus embodying the features of the invention;

FIG. 1A is a fragmentary section showing the cam and breaker points;

FIG. 2 is a fragmentary schematic representation of electrical components controlled according to the rotational position of the reel shaft shown in FIGURE 1;

FIG. 3 is a front elevation of the reel assembly and its supports;

FIG. 4 is an end elevation of one arm of a reel spider, shown partly in section taken substantially along the line 44"in FIG. 5;

FIG. 5 is a sectional view of a spider arm and slip ring assembly, taken substantially along the line 55 in FIG. 4;

FIG. 6 is a side elevation of the paster carriage assembly;

FIG. 7 is a bottom view of the paster carriage looking substantially along the line 7-7 in FIG. 6;

FIG. 8 is aside elevation of the paster carriage, taken partially in section substantially along the line 88 in FIG; 7 and illustrating the brush and knife cocking mechanisms;

FIG. 9 is a schematic circuit diagram of the electrical controls for accomplishing sequential operation or movement of the several parts; and

FIG. 10 is a schematic diagram of an auxiliary circuit for energizing the reel motor.

While the invention has been shown and is described in some detail with reference to a particular embodiment thereof, there is no intention thus to limit it to such details. On the contrary, it is intended here to cover all modifications, alterations and equivalents falling within the spirit and scope of the invention defined by the appended claims.

General Organization The web splicing apparatus here illustrated as embodying the invention is of the general type employed with newspaper printing presses to make flying pasters, i.e., to splice the leading end of the new roll to the web being drawn from an expiring roll without requiring interruption or slowing down of the web and the press into which it is fed. The mechanism includes a movable support for paper rolls, here shown as a reel assembly 15, a predrive assembly 16 onone side, and a paster carriage assembly 17 on the other side (FIG. 1). Axially spaced on a reel shaft 21, which may be turned by a suitable electric motor 22, are spiders having radial arms which rotatably support three web rolls 25, 26, 27. The running web W is drawn from the roll 25 upwardly into the press (not shown) at a speed dependent upon the press. Thus, the roll 25 is designated as the expiring roll. Since the roll 26 will supply the web W after a splicing operation, it is termed the new roll Because the roll 27 has just been added to the reel to replace the previously expired roll, the roll 27 is called the newly loaded roll.

For retarding rotation of the expiring roll 25 so as to create tension in the web W, a plurality of straps 28 bear against that roll and are tightened by a pneumatic actuator 29 supplied with variable air pressure from an automatic controller 30 which is responsive to the deflection of afloating roller 31 over which the web W is trained. This tensioning system is preferably of the type disclosed and claimed in the McWhorter Patent No. 2,743,881, issued May 1, 1956, to which reference may be made for more detailed description.

The predrive assembly 16 is mounted on the upper portions of Y-shaped supports 32 (shown in FIG. 3) and includes a carriage 33 movable or pivotable between a retracted position (permitting clearance for a roll as the reel rotates) and in operative position (permitting the new roll to be either driven or braked). Such movement is caused by a double-acting pneumatic actuator 34 under the control of a four-way valve 35 shifted between its two positions in response to energization or deenergization of a solenoid 36. The carriage 33 supports an endless belt 38 which may be brought into frictional driving engagement with the new roll 26' so that the latter is brought up to speed before the splice to the running web is made. The belt 38 is driven or retarded by a motor 39 controlled in a particularly advantageous manner by means including an amplidyne 40. The carriage 33 is raised and lowered to and from its retracted and operative positions automatically to permit the newly loaded roll 27 to clear it as the reel rotates.

It will be understood that prior to a splice, the leading edge of the new roll 26 is coated with a pattern of suitable adhesive paste or glue which remains tacky. A discontinuity is left in the adhesive where the predrive belt 38 engages the roll.

Associated with the carriage 33 is a limit switch PLS mounted on a stationary part to be engaged and tripped by the carriage when the latter is in its uppermost or res2 tracted position. This switch is used in the control circuitry to be described below. Its contacts are actuated when the carriage 33 is not fully retracted, and vice versa.

The paster carriage assembly 17 functions to deflect the running web W against the properly positioned new roll 26 in order to bond the web to the leading edge of the new roll, and to sever the old Web from the expiring roll 25. This assembly includes a carriage 41 pivoted to rock between retracted and operative positions about a support shaft 42 under the influence of a double-acting pressure fluid (pneumatic) actuator or ram 44 controlled by a fourway solenoid valve 35 moved between its two positions in response to energization or deenergization of a solenoid 46.

Supported on the paster carriage 41 are a plurality of brushes 48 cocked against spring biasing means and retained by a latch. With the carriage lowered, release of the latch permits the brushes 48 (FIGS. 1 and 7) to swing outwardly and deflect the web W against the rotating new roll 26 (see also dashed lines in FIG. 6). This, in turn, causes the web to adhere to the paste on the new roll. Also supported on the paster carriage and actuated shortly after the brushes, are a plurality of serrated knives 49 (FIGS. 1 and 7) cocked against spring means and retained by a latch. When the latch is released, the knives 49 swing outwardly to sever the web W at a point heneath the brushes so that the expiring roll web is broken (see also FIG. 6).

The paster carriage includes a frame 80. Mounted thereon are two carriage limit switches ICLS and ZCLS which are used for control purposes. The switch ZCLS is gravity-operated whenever the paster carriageapproaches its lowered operative position. For this purpose the switch 2CLS, which has a plurality of contacts, may include mercury bottles mounted in suitable angularly adjustable spring clips. The carriage limit switch M18 is tripped by a stop abutment 43 whenever the carriage is fully retracted. This will be considered the normal or de-actuated condition of the switch, its contacts being actuated when the carriage it lowered.

Referring more particularly to FIGS. 1-4, it will be seen that the main reel shaft is rotatable and is driven by the reel motor 22 which is energized through contacts R-l, R-2, and R-3, closed upon energization of a coil R.

Two spiders 50, 51 (FIGS. 1 and 3) are spaced axially on and rotatable with the shaft 21, each having three radial arms 52, 53, 54 spaced at 120 angles. In each radial arm are journaled spindles 55 on which the rolls are chucked. Located in each arm of the spider 50 is a single set of breaker contacts or points 56 opened and closed by a cam 58 which rotates with the spindle. Each spindle also carries an external knob 59 marked with suitable indicia such as an arrow 60. The trailing edge of the glue or paste pattern is applied to a new roll at the peripheral location to which the arrow points. This assures that the cam 58 opens and closes the breaker points 56 in properly timed relation to the angular position of the pasted leading edge as the new roll 26 is rotated prior to a splice.

Also associated with each of the spindles 55 is an electromagnetic brake 57 actuated by energization of brake coils 57a (FIG. These brakes are engaged when the roll carried on the associated spindle is being predriven or is supplying the web W, to keep the rolls in a given angular position.

To provide electrical connection to the breaker points 56 despite the fact that the spider 50 in which they are located rotates to different angular positions, a stationary slip ring housing 61 is disposed around the shaft 21. A plurality of slip ring segments 62 (FIG. 2) are mounted in insulating material to rotate with the shaft and are connected through a circular slip ring 64 and wiring leading out through the radial arms to the respective breaker points 56. Similarly, a three-segment slip ring 66 and a circular slip ring 65 serve to provide electrical connection to the brake coils 57a. Carried in the housing 61 and riding in electrical contact with different segments of the ring 66 are a pair of brushes 72, 74. Similarly, brushes 75, 76 and 78 ride in electrical contact with the three slip rings 64, and 66, respectively. These brushes are connected into electrical circuits more fully described below with reference to FIG. 9. Stationary within the housing 119 and connected into external electrical circuits are four reel limit switches, RLSI, RLS2, RLS3 and RLS4 controlled according to the angular position of the reel shaft 21. The switches have followers engaging a pair of circular cams 69, rotated with the reel shaft 21.

Limit switches RLS1 and RLS3 are controlled by the cam 70, while the switches RLSZ and RLS4 are controlled by the cam 69. All have normally closed contacts. As seen in FIG. 2 each of the cams 69, 70 is formed with a circular surface having adjacent raised and grooved portions at three locations spaced at 120. Thus, the switches RLSl and RLS2, which open when their followers drop into cam grooves, open once each time one of the spider arms passes through a given angular position. The same is true of the limit switches RLS3 and RLS4 which open each time that their followers are lifted by a raised cam portion. These switches have contacts which are shown in FIG. 9, and efiect control functions which will be described below.

When a splice is to be made, the reel shaft 21 is set in rotation to bring the new roll to a substantially top vertical position as shown in FIGURE 1. To assure that the new roll will be stopped in close proximity (about inch) to the running web W, a photoelectric cell 79 of a photorelay is mounted on one of the support frames 32, with a light beam source mounted on the opposite frame. When the periphery of the new roll 26 breaks the light beam, the reel driving motor 22 is automatically deenergized to halt reel rotation.

Paster Carriage Assembly In physical structure, the paster carriage has two side frames 80, 81 (FIGS. 6 and 7) held fast at their one end on the support shaft 42 journaled between the supports 32. The shaft is rocked to raise or lower the frames 80, 81 by the double-acting air ram 44 which has its cylinder fast on one support 32 and its piston rod connected to a radius arm 82 fixed at one end of the shaft. Rotatably extending between the side frames are a brush shaft 84, a knife shaft 85 and a safety shaft 86. A plurality of the brushes 48 are held axially spaced on the shaft 84 by bolted brackets 90. The knives 49, made in form of serrated plates, are bolted or otherwise fixed to the shaft 85, being axially separated to clear the tensioning straps 28 when swung outwardly (FIG. 6).

In order to deflect the tension belts 28 at the same time that the brushes engage the running web W, a plurality of belt deflectors 91 (FIG. 7) are bolted fast to the shaft 84 in between the brushes. These move the belts 28 at the same time that the web is deflected and eliminate wrinkling of the web by providing contact with either the brushes or the belts along its full width. If only the spaced brushes pressed against the web, longitudinal wrinkles in the latter might occur. And as these run through the press, particularly around rollers, there is likelihood that they may crack or tear transversely, thus rupturing the entire web and necessitating press stoppage and rethreading.

For biasing the brush and knife shafts 84- and 85 in a counterclockwise direction (as viewed in FIG. 6), they are equipped with torsion springs 92, 94 and 95, 96 respectively. These springs are cocked by clockwise rotation of the shafts 84 and 35 as an incident to retraction of the carriage to its upper position as explained more fully below.

On the outer side of the frame St} a latch cam 98 fast on the brush shaft 84 is engaged by a latch arm on a bell crank 99 biased in a clockwise direction (FIG. 6) by a torsion spring 99a shown in FIG. 7. As the shaft 84 is cocked clockwise, the bell crank snaps into the cam 98 to hold the shaft 84 against the torsional loading of the springs 92, 94. The bell crank latch 99 may be tripped when its opposite arm is struck by the plunger 100 of a solenoid or first electrical device 101 when the latter is energized. Concurrent with energization of the solenoid 101, and rocking of the bell crank 99 counterclockwise (FIG. 6), a limit switch BLS having its follower riding on a control surface of the bell crank is actuated. This switch has a plurality of contacts used for control purposes as explained below.

A similar latch and latch tripping arrangement is employed for the knife shaft 85. A latch cam 102 fast on the end of the knife shaft 85 is engaged by a latch arm on a pivoted bell crank 104. The opposite arm of the bell crank is disposed in the path of a plunger 105 which is extended when a knife release solenoid or second electrical device 106 is energized. A limit switch KLS is mounted with its follower riding on an eccentric cam 108 fixed to the latch cam. The switch contacts are thus actuated whenever the knife shaft 85 is released by energization of the solenoid 106.

Sequence Controls for Timing Operation of the Brush and Knife Subcombz'nntion The sequence controls for timing the operation of the the paster may best be understood with reference to the schematic electrical circuit in FIG. 9. The various relay coils are identified by the same alphabetical symbols used to identify their various contacts, which are distinguished by numerical sufiixes. The various limit switches, slip rings, and brushes identified above are marked in FIG. 9 with the same reference characters previously employed.

Those particular limit switches or other components in the reel assembly are enclosed by dashed rectangles in FIG. 9. In a similar manner, those electrical components on the paster carriage are shown enclosed in dashed circles while those for the predrive carriage are enclosed by dashed triangles. All switch and relay contacts are shown open or closed, as the case may be, as they are when the predrive carriage and paster carriage are both retracted prior to the beginning of an operational cycle.

Any time that a paste or splicing cycle is not in progress the contactor coil R may be energized by depressing a manual pushbutton switch M, thus closing the contacts R-l, R2, R-3 (FIG. 10) and energizing the reel motor 22. At all times that a paper roll does not interrupt the light beam shining into the photoelectric relay '79, its coil PE is energized and the contacts PE1 are closed.

To initiate the splicing operation an operator depresses and holds a position pushbutton switch, thus energizing the contactor coil R through normally closed contacts 1CLS-1 and PE1. The reel, therefore, begins rotating in a counterclockwise direction, advancing the new roll 26 (FIG. 1) towards its pre-paste position. The lower contact for the position button energizes the coil of a relay POS so that it is picked up. The solenoid 46 for the paster carriage control valve 45 is not, however, energized because the contacts R4 are at this time open. The operator must hold the position switch down until the periphery of the new roll 26 breaks the light beam, thereby deenergizing the coil PE1. This, in turn, opens the contacts PE-l and deenergizes the coil R to halt the motor 22 and the reel with the new roll 26 closely spaced to the running web W (FIG. 1).

When the contactor R drops out, its contacts R4 reclose, thereby energizing the solenoid 46 for the paster carriage four-way valve 45. This allows the paster carriage to descend under the influence of gravity.

As the paster carriage approaches its lowered or operative position, the mercury limit switch ZCLS is actuated. Upon closure of the normally open contacts 2CLS-2 the coil for the POSrelay is sealed in through normally closed contacts RLS4 and RLS-S, the latter being in parallel with PLS-l contacts. The contacts 2CLS3A close to prepare a circuit including a normally open predrive pushbutton switch. Also, the contacts 2CLS3B open rendering ineffective the manual push button switch M.

With the predrive carriage 16 lowered to make the belt 38 (FIG. 1) engage the surface of the new roll, the motor 41 is started (by means not shown) to predrive the new roll until its surface speed approximately matches the speed of the web W. The apparatus is now ready to effect the actual splicing and this is initiated by closing the paste switch.

When the operator depresses the paste switch (FIG. 9) the coil for an auxiliary relay PA is energized and seals in through its own normally open contacts PA-1 and the already closed contacts POS2. The contacts PA2 close so that the coil of another relay E is energized the next time the cam 53 (FIG. 1) on the new roll spindle 55 closes its breaker points 56. The contacts PA-3 close so that a circuit to the contactor coil R will automatically be completed when the contacts 2CLS- 2B reclose as the paster carriage retracts. Additionally, the resultant opening of the contacts PA-4 leaves the energization of the solenoid 36 with the predrive control valve energized solely through the contacts POS-2 and In accordance with the present invention, the web-deflecting brushes and the web-severing knives are sequentially actuated while the new roll executes less than one full revolution by causing the brushes to be released when the single set of breaker points open, and the knives to be released when the breaker points next close. To accomplish this, a control relay E (FIG. 9) is connected to be picked up and dropped out as the breaker points 56 for the new roll open and close. The relay E has contacts which control a second relay D, the latter being made self-holding.

The brush-controlling device, i.e., solenoid 101, is connected in the circuit with normally closed contacts E-2 of the relay E, so that it can be energized only after the relay D has been picked up and the relay E deenergized. Thus, the contacts E-l, D-1 and E-2 shown in FIG. 9 form control means to cause release of the brushes 48 in response to opening of the new roll breaker points 56.

As noted previously, the limit switch BLS is actuated when the brushes are released. Normally open contacts BLS-2 are connected in series with the knife-controlling device or solenoid 106 to prevent energization of the latter until after the brushes have been actuated. Contacts E4 of the relay E are also in series with the knife solenoid 106. These circuit connections assure that the knife solenoid will be energized when the contacts E-4 first close after the brushes have been released, i.e., when the new roll breaker points 56 reclose the next time following the release of the brushes.

In summary, therefore, the operation of the control apparatus for the brushes and knives proceeds automatically after the paste switch has been closed, and the relay PA picked up and sealed in. Its contacts PA-2 are then closed to place the relay under control of the new roll breaker points 56.

Thus it will be apparent, when the new roll breaker points 56 first close, they complete a circuit through the slip ring 64 and the segmented slip ring 62 to the relay coil E. Pick up of this relay and closure of the contacts E-1 energizes the coil of another control relay D. The brush latch-releasing solenoid 101 is isolated however, by the opening of the contacts E-2. The energization of the coil D completes a sealing circuit through the contacts D1. The contacts D-2 in parallel with the contacts 2CLS2A close to complete the seal-in circuit for the POS relay coil even though the contacts 2CLS2A subsequently open.

As the new roll rotates sufficiently to make its corresponding breaker points 56 reopen, the coil E is deenergized so that the contacts E-Z reclose and supply current to the brush release solenoid 101 through the now closed contacts D1. As a result, the bell crank (FIG. 6) is rocked clear of the latch cam 98, and the brushes 48 are released to deflect the running web W and hold it against the new roll 26. At this time, the adhesive strip on the new roll has just passed the point of web contacts, so that it adheres to the web after the new roll makes almost one revolution.

With the release of the brush shaft 84, the limit switch BLS is actuated. Its contacts BLS-l and BLS-Z close so that the coil of an auxiliary relay PDSX and the knife solenoid 166 will be energized the next time that the contacts E-4 close.

Then, upon continued rotation of the new roll spindle, its breaker points 56 reclose to again energize the coil for the relay E. This occurs very shortly after the breaker points 56 have opened and the brushes 43 were released; the new roll has rotated only a fraction of a revolution. The contacts E-4 close and energize the knife solenoid 106 which rocks the bell crank 104 (FIG. 6) free of the latch cam 102 so that the knives 59 spring into the old web beneath the splice and sever it from the expiring roll. Accordingly, the web W is joined to the new web roll, and severed from the expiring roll so that the web thereafter is drawn from the new roll '26. There is only a very short overlapping or double-layer portion where the old and the new web are joined together.

Closure of the contacts E-4 also energizes the coil PDSX which is then sealed in through its contacts PDSX- 3. The PDSX-1 contacts open to deenergize the solenoid 46 for the paster carriage control valve 45, so that the paster carriage immediately begins to retract.

Rotation of the knife shaft 85 also actuates the limit switch KLS so that its contacts KLS-l close to complete a circuit through the brush '74 and a particular one of the segments in the slip ring. This reenergizes the brake coils 57a for the expiring and newly loaded rolls 25 and 27, while leaving the brake coil for the new roll 26 deenergized. Certain control switches are shown in FIG. 9 interposed between the slip ring segments 66 and the brake coils but inasmuch as the brakes and their controls form no part of the invention claimed in this application, further detailed description is not necessary. Moreover, when the relay PDSX was picked up and sealed in, its contacts PDSX-4 closed to seal in the relay E, thereby preventing cycling of the latter as the new roll breaker points 56 continue to open and close.

As the paster carriage retracts slightly, limit switch ZCLS de-actuates, thereby reclosing its contacts ZCLS- 2B which then energize the contact to coil R through the new closed contacts PA-3. As a result the motor 22. is energized and the reel rotates to advance the new roll towards the tension belts 23. It will be noted that even though the contacts 2CLS2A reopen, the POS coil remains sealed in through the now closed contacts D-Z.

When the paster carriage reaches substantially fully retracted position, the limit switch ICLS de-actuates. Its contacts 1CLS-3 open to deenergize safety solenoids so that corresponding safety valves reclose to trap the paster carriage in its retracted postion.

As the reel continues to rotate, the reel limit switch RLS-Z next is opened by its cam when the new roll is in good contact with the belts 28.

The contacts RLS-Z deenergize relay coil PD. Dropout of this relay opens contacts PD-4, deenergizing the solenoid 36 for the valve 35 so that the predrive carriage begins to retract. When the predrive carriage is fully retracted, the contacts PLS-l, which were open, reclose. Drop-out of the contacts PE-l deenergizes the knife solenoid 106 and the relay PDSX. As the reel rotates still further, the reel limit switch RLS-3 next is opened by its cam. However, if the contacts PLS1 have not at this time reclosed, the POS coil is deenergized, opening the contacts PCS-2 to thereby deenergize the coil PA which,

in turn, opens the contacts PA3 to drop out the con tactor R and stop reel rotation. By this safety feature, therefore, the predrive carriage must be fully retracted by the time the reel rotates sufliciently to open the switch RLS-3; otherwise, the reel is halted. It is thus impossible for the newly loaded roll to strike the predrive carriage as the reel advances, with possible damage to the apparatus.

Finally, as the newly spliced roll reaches a normal operating position in the belts 28, the reel limit switch RLS4, opens. The holding circuit for the coil P05 is then broken, its contacts POS2 open and all solenoids and relay coils are deenergized. The paste cycle is thus complete with the running web W being drawn from the new roll, with the expired roll in position for removal and replacement by a newly loaded roll, and with the previously newly loaded roll ready to advance into the pre-paste position when the next splice is to be made.

From the foregoing description of an operational cycle, it is clear that during one revolution of the new roll spindle the breaker points operate the paster control circuit, releasing the brushes and then the knives to respectively deflect the web and then sever it from the expiring roll. First, the breaker points close thereby preparing the control circuit for energization of the brush solenoid; then when they open the brush solenoid is energized. Subsequently, the brush limit switch prepares the relay E to be energized upon the next closing of the breaker points to release the knives.

The advantage of having the brushes and knives both operate during a period required for less than one revolution of the new roll spindle is that a minimum length of the web is made up of a double ply of paper. As a result, there is less possibility of jamming in the press cylinders with the requirement of stopping the press.

The timing arrangement described is relatively simple and inexpensive in its structural components, yet it produces pasting of a running web to a new roll in a minimum of time and with enhanced reliability.

We claim as our invention:

1. In apparatus for splicing a running web to a new web roll having adhesive on the leading edge thereof, the combination of a spindle for rotatably supporting the new roll adjacent the running web, means for rotating the new roll, a paster carriage positionable adjacent the opposite side of the web, web deflecting means on said carriage movable towards the running web to shift the latter against the surface of the new roll, web severing means on said carriage movable toward the running web to rupture the same at a point prior to its reaching the new roll, first and second electrical devices respectively connected to control the movement of said deflecting and severing means, a cam rotatable with the spindle, a set of breaker points operated by said cam, electrical control means responsive to opening of said points to energize said first device with consequential movement of said deflecting means towards the web, and electrical control means responsive to the next closure of said points to energize said second device with consequential movement of said severing means.

2. In apparatus for splicing a running web to a new web roll, the combination comprising a spindle for rotatably supporting the new roll adjacent the running web, means for rotationally driving the new roll, a paster carriage positionable adjacent the opposite side of the running web, spring-loaded brushes on said carriage movable to deflect the web against the new roll, a first latch for holding said brushes and a first solenoid for releasing said latch, spring-loaded knives on said carriage movable to sever the web, a second latch for holding said knives and a second solenoid for releasing said latch, a cam rotatable with said spindle, a set of breaker points closed and opened once for each revolution of the cam, and control means for energizing said first and second solenoids in response to a sequential opening and closing of said breaker points.

3. In apparatus for splicing a running web to a new Web roll, the combination comprising a spindle for rotatably supporting the new roll adjacent the running web, means for rotationally driving the new roll, a paster carriage positionable adjacent the opposite side of the running Web, brushes on said carriage movable to deflect the Web against the new roll, knives on said carriage movable to sever the web, first electrical means for initiating such movement of said brushes, second electrical means for initiating such movement of said knives, a cam rotatable with said spindle, a set of breaker points closed and opened once for each revolution of the cam, and control means for energizing said first and second electrical means in response to a sequential opening and closing, respectively, of said breaker points to accurately time the movement of said brushes and knives relative to the rotation of said roll.

4. In apparatus for splicing a running Web to a new Web roll having adhesive on the leading edge thereof, the combination of a spindle for rotatably supporting the new roll adjacent the running Web, means for rotating the new roll, a paster carriage positionable adjacent the opposite side of the Web, spring-loaded brushes and knives in said carriage urged toward the running web, latches for respectively restraining said brushes and knives, first and second solenoids for tripping the brush and knife latches, a cam rotatable with said spindle and a set of breaker points operated by said cam, and electrical control means for energizing said first solenoid upon opening of said points to release said brush and for energizing said second solenoid upon the next closure of said points to release said knives.

5. In apparatus for splicing a running web to a new web roll having adhesive on the leading edge thereof, the combination of a spindle for rotatably supporting the new roll adjacent the running web, means for rotating the new roll, a paster carriage positionable adjacent the opposite side of the web, web deflecting and severing means in said carriage movable toward the running web, first and second electrical devices for respectively causing movement of said deflecting and severing means, a cam rotatable with said spindle and a set of breaker points operated by said cam and electrical control means for energizing said first device in response to opening of said points and for energizing said second device in response to the next closure of said points to release said knife.

6. In apparatus for splicing a running web to a new Web roll having adhesive on the leading edge thereof, the combination of a spindle for rotatably supporting the new roll adjacent the running web, means for rotating the new roll, a paster carriage positionable adjacent the opposite side of the web, Web deflecting and severing means on said carriage movable towards the running web, first and second solenoids for respectively effecting movement of said deflecting and severing means, a cam rotatable with the spindle, a set of breaker points operated by said cam, first relay means responsive to opening of said points to energize said first solenoid with consequential actuation of said web deflecting means towards the Web, and second relay means responsive to the next closure of said points to energize said second solenoid with consequential actuation of said Web severing means.

Wood Oct. 1, 1940 McWhorter Sept. 14, 1954

Images