US1960767A - Web change device - Google Patents

Description

, WHY 29, 1934. H, A, woon 1,960,767-

' WEB CHANGE DEVICE I i Original Filed Sept.-9, 1930 4 Sheets-Sheet l H. A. W. WOOD WEB CHANGE DEVICE Original Filed Sept. 9, 1930 4 Sheets-Sheet 2 May 29, 1934. H. A. w. wobD 1,960,767

WEB CHANGE DEVICE Original Filed; Sept. 9. 1930 4 Sheefs-Sheet 3 MaY29'1934/ '.l-|.A.w.woob 1,960,767

WEB CHANGE DEVICE I Original Filed Sept. 9. 1930 4 Sheets-Sheet 4 Patented May 29, 1934 UNITED STATES,

WEB CHANGE DEVICE v Application September 9, 1930, Serial No. 480,677 Renewed April 30, 1932 6 Claims. 01. 2424s) The principal objects of the invention are to provide mechanical and automatic means for moving a propelling device horizontally into contact with the new web roll to bring it up to web means which will automatically move the propelling device away at the proper time; to provide means for mechanically moving a frame work carrying means horizontally for pressing the web horizontally against the incoming roll at the proper time; to provide improved means to apply a yielding pressure against the web to press it against the incoming roll; to provide horizontal tension belts for the web: and to provide a simple construction for maintaining a proper tension on the web by the use of weights.

Other objects and advantages of the invention will appear hereinafter.

Reference is 'to be had to drawings, in which Fig. 1 is a plan of a pair of fresh web rolls and the propelling means and a part of the means for pressing theweb against the new roll;

Fig. 2 is a plan of the mechanism for pressing the web against the fresh web roll, partly in secthe accompanying 3 tion;

Fig. 3 is a fragmentary side view'showing the bottom of the device; and Fig. 4 is a similar view of an upper part of the device.

In a preferred form of the invention, the mechanism, in brief, comprises a vertical brush carried on swinging arms which are moved horizontally into operative position by the action of a motor which at the same time moves inwardly a caterpillar drive for the new roll. The drawings show a double equipment which is capable of handling two reels, and the mechanism used is similar to that described in my application SerialNo. 471,461 filed July 29, 1930, except that it is arranged for vertical rolls. The particular form shown is a two-arm paper reel, each arm carrying chucks for a roll, but I do not .wish to be limited to any particular number of rolls. The device is designed to operate-in connection with a new type of. reel which is oscillated on a vertical axis and carries vertical web rolls. The rolls that are being used and are nearly exhausted are designated A. -The rolls B'are fresh webrolls which are to be moved by the rotation of the reel up into position for their ends to be spliced to the running speed before the pasting operation; to provide,

are accomplished willibe described later.

web W. It will be understood that, as is usual in this kind of pasters, this roll 13 is also to be rotated on its own axis by means indicated in Fig. 2.

It will be understood that the forward end of the incoming web on the roll B is previously prepared for splicing with particular reference to some distinguishing mark on the chuck supporting,i-t, so that the pasted leading edge of the web on the roll B will come into contact with the running web W at a definite point in the rotation of the roll B on its own axis. 1 i

When the butt A is getting quite small, a button is pressed. This connects up the motor 22 with the line to start the motor in the direction which "is necessary to move the caterpillar 20. and the frame arms 23 inwardly toward the roll B. The

arms 23 have extensions 24 pivoted tothem by a jack-knife joint and yieldingly held out straight by springs 21. The way in which these motions I. The caterpillar is moved in untilit contacts with, and starts revolving, the incoming roll B.-

The arms 23 are moved in until their arm ex tensions 24 rest'against the tension straps25,

which pass over the butt A, and press the web IO against the butt. Four-arms 23 and four straps 25 are shown.

When the operator decides that the butt is sufficiently exhausted, he presses and holds down a forward button. The reel is swung then by the'motor 16 in the forward direction with the incoming roll B being rotated on its own axis at web speed. A circuit is completed in any desired way to energize a brush release solenoid 27. In a manner to be described, this trips a set of vertical brushes 28 to come into position to press the web against the incoming roll B for making the splice. These brushes are mounted on the frame arms 23 as will appear.

By referring to Fig. 1, it is to be observed that the tension device consists of a plurality of horizontal straps 25 fixed to the brush arms at one end and passing over an idler pulley 7 on a vertical shaft 8. At the other end these straps are connected to a cable 9 which in turn passes over me a sheave 10 to be connected with a weight which supplies the tension. The weight holds down the cable with the desired amount of tension to keep the tension belts proper condition to cause the web W to run into the press smoothly and prevent its overfeeding at any time.

Also mounted on a bracket on the frame 37 is a vertical shaft 40 provided with an arm 41 fixed to it which, by means 01 a link 42, operates an arm 43 pivoted on a vertical shaft 44 supported by the frame. On this arm43 is pivoted a frame which supports three rolls 46, 46 and 47 on vertical axes over which the caterpillar web roll propelling device 20 operates. The turning of this shaft 40 results in moving the caterpillar away from the roll. A spring 38 and poppet are used for forcing the caterpillar against the new web roll B.

The shaft 44 on which the arm 43 is carried is provided with a bevel gear 51 which receives its power from a similar gear on a shaft 52. The shaft 52 is connected positively with the press to rotate at a speed proportionate to the speed of the printing couple. The pulley 47 is driven by means (not shown) from the shaft 44, which is so proportioned that the caterpillar belt 20 will move along at the same surface speed as the speed of the web passing into the press.

The shaft 40 is oscillated for the purpose of moving the belt horizontally back and forth by means of two arms 5'7 fixed to this shaft and links 58 which are pivotally connected with levers 59 pivoted on a vertical shaft 60. This shaft is oscillatably mounted in brackets 61 carried by the frame 37 of the printing press or other machine. The levers are directly pivoted on concentric bosses on the frame arms 23 fixed to the shaft 60. There are three horizontal frame arms 23 each connected with the shaft 60 at two points and pivoted thereto. Also on bearings rotatably carried by the shaft 60 are two horizontal segment arms 62 at opposite ends of the shaft. The segment arms and the frame arms are free to swing on the shaft but not to move along it.

Each of the frame arms 23 is formed of a wide central portion having reenforced vertical edges and the bearings by which the arms are supported by the shaft 60 are in horizontal alignment with these edges and held against longitudinal motion by collars on the shaft. Each of .these frame I arms 23 is independently pivoted on the shaft but they are held tightly together to form a single rigid frame by a vertical tie rod 63. Each of said frame arms has two bearings on this rod and the rod has a shoulder on one end engaging against the outsidebearing and a lock nut on each end for pulling up the structure solidly soas to make a rigid frame.

On the frame is mounted a vertical brush arm shaft 64 extending the whole length of the frame. It is mounted in two hearings in each of the three frame arms in which it is free to rotate and is secured against end play by collars. A plurality of brushes 28 (five in the present instance) are mounted on pairs of brush arms 65 secured to the shaft 64. These brush arms are turned by the turning of the shaft to press the web against the new roll. is supplied by three long springs 66 carried on long horizontal rods 6'7 slidably mounted in brackets 68secured to the three frame arms. Three spring rod arms 69 are secured to the shaft 64, and provided with bifurcated free ends to which the outer ends of the rods are pivotally attached. Two collars are adjustably secured to eachspring rod, one to limit the forward motion of the brush and the other to transmit the force of the spring to the rod.

The central one of the spring rod arms .is different from-the other two, in that it carries a toe '70 for engaging ina notch. of a trip arm '71. This trip arm is pivoted on a bracket '72 and its motion is controlled by the action of a, brush release solenoid 2'7 which is also mounted on this The force for doing this bracket and the plunger of which is pivotally connected with the, trip arm '71. This trip arm holds the entire brush in'readiness, as shown at the right in Fig. 2, until the pulling in of the plunger of the solenoid 2'7 releases the toe '70. The three springs are free to rotate the brush arm shaft, pushing the brushes forward against the web. When the brush arms are retracted to inoperative position, the ends of the spring rods 6'7 come in contact with abutments '74 on collars securedto the shaft 60. In thisway the springs are placed under pressure so that the release of the solenoid 2'7 allows the toe '70 to relatch in the notch of the trip arm '71. As

stated before, the frame formed of the three frame arms 23 is moved by the levers 59, away from. the rear roll but springs '75 constantly tend to push them against the roll and are free to act when the motor turns in a forward-direction.

On each edge of the frame at both ends of the frame, a stud '77 is used for thepurpose of pivotally mounting a pawl '78 which is provided with small teeth. These teeth are adapted to come into mesh with the teeth on the arcuate outside surfaces of the segment arms 62. This pawl '78 also carries an upper projection on which is mounted a stud '79 which fits in a hole in the end of the lever 59. The segment arm 62 swings on the shaft 60 and is held'in a slightly yieldingly manner by a pivotally attached rod en gaging a poppet 81 which is secured by a screw pivotally to the frame 3'7 of the machine. A spring 82 on the rod provides for the yielding action.

This construction isprovided so that when the frame arms move from one position to the other, the teeth of the pawl '78 will engage the teeth on the segment arm 62. This prevents any mo tion of the frame by the pressure of the roll against the brush.

When the lever 59 is operated to move the frame the small amount of play in a slot '76 permits motion of the pawl '78 to disengage these teeth before the moving of the frame begins. A similar construction is used on the other end of the machine.

One extension 24 is attached to each of the outer frame arms and two to the central frame arms, thus making four of these extensions to bear against the four tension belts 25, if that a stop 84.

The power for operating each caterpillar and set of frame arms is provided by a small 'motor 22, which through gears drives a worm 91. The worm meshes with a gear segment 92 on the shaft40. The shaft 40 has a clutch collar pinned to it having teeth engaging similar teeth on the hub of the arm 41. vAnother arm 94 is keyed to the shaft 40 and pivoted to a link 95, pivotally connected with an arm 9'7 keyed to the shaft 60 for operating it.

In order to stop the reel in such a'position as to leave the fresh web roll at the proper distance from the brush over which the web is traveling, an arm 102 is provided .which will be located in a position adjacent to the space between the surface of the fresh web roll and the running web.

roll it will move out beyond the end of that roll and out of the space between the roll and the web and it aetsto stop the reel and set up the pasting mechanism. The details-of this mechanism are not shown, described or claimed herein, as they are claimed in my copending application Serial No. 471,461 filed July 29, 1930 which issued June 6, 1933 as Patent No. 1,912,506.

This pasting mechanism operates in a manner very similar to that of my arrangement shown in my above mentioned application, whereby when a roll is nearly exhausted the caterpillar is pressed against the incoming roll and the brush is brought forward until the extensions 24 contact with the tension straps against the expiring roll. When the operator desires to make a paster he presses a button, such that the incoming roll is advanced toward the brush until a monkey'switch operates,

at which time the reel automatically stops and the brush mechanism is set in operation by the closingof acontact on the end of the incoming roll. A solenoid trip releases the brush so that it presses the web against the incoming roll and thereby attaches the new sheet.

It is obvious that this type of pasting mechanism is'easily applied to rolls operated in a vertical position when springs or some other forces are used to supply that which is furnished by gravity in the horizontal style of mechanism. Although I have illustrated and described only a single form of the invention, I am aware of the fact that modifications can be any person skilled in the art from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all the details of construction herein shown and described, but what-I do claim is:--'

1. In a web replenishing device, the combination of a frame mounted to swing on a vertical axis, means carried by the frame-for pressing a web against the new web roll, a source of power, a vertical member connected to be turned forwardly or backwardly by the source of power, a

made therein by I web roll propelling device for rotating the new 45 web roll on its vertical axis, a lost'motion connection operated by said member for controlling the moving of said frame toward and from the web roll, and yielding means for turning the frame toward the new-web roll when the motor rotates in a direction to permit the yielding means to act. 2. In a web replenishing device, the combination with means for supporting a new web roll on a vertical axis, of a frame mounted to swing on a vertical axis, means carried by theframe for pressing a web against the new web roll, a source without departing propelling device for rotating the new web roll on its vertical axis, means operated by said shaft for '-moving said web propelling device away from said roll, and a spring and poppet arrangement for forcing the propelling device against the web roll.

3. In a web replenishing device, the combination with a movable reel having means for supporting a plurality of web rolls on vertical axes, means for rotating a fresh webroll on its vertical axis up to web speed, a frame pivoted to swing on a vertical axis, yielding means for swinging the pivoted frame to a position in which it backs up the running web, and receives the pressure of the fresh web roll when it engages the web to make the pastor, and a reversible motor connected to move the frame back and to allow the yieldingmeans to move the frame forward.

4. In a webreplenishing device, the combination with means for guiding the running web into the press and means for movably supporting the fresh web roll on a vertical axis, of a vertical shaft, a frame pivotally mounted on said shaft and freeto turn thereon, a soft surfaced device on-the frame, a lever pivoted on said shaft, a reversible source of power having means connected with saidlever for operating it, means for connecting the lever and the frame to cause the frame to swing with the lever-away from the web roll, and a spring for moving the lever toward the new web roll to force the soft surfaced device against the roll. r

.5 In a web replenishing device, the combination with means for supporting a fresh web roll on a vertical axis, a vertical shaft, means for,

turning the shaft back and forth, a frame pivoted on the shaft by a jack knife joint, extensions pivotedto the frame on vertical axes, yielding means for pressing the frame and extensions toextensions in the plane of the frame, and tension straps in position to be engaged by the extensions and forced against the roll.

pivoted to the frame, springs for tending to hold the extensions in the plane of the frame, and

stops for preventing the extensions from sticking out straight when the frame is back from the roll.

HENRY A WISE WOOD.

ward the roll, springs for tending to hold the i

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