US1843492A - Web splicing device - Google Patents

Description

Feb. 1932; 1. TORNBERG WEB SPLICING DEVICE Original Filed July 6. 1927 2 Sheets-Sheet 1 Feb. 2, 1932. romxg 1,843,492

WEB SPLIGING'DEVIGE 4 Original Filed July 6, 1927 2 Sheets-Sheet 2 g m gz latented Feb. 2, 1932 UNITED STATES PATENT orrlcr.

ISIDOR TOBNBERG, OF PLAINFIE D, NEW JERSEY,

OF NEW YORK, N. Y.,- A CORPORATION OF VIRGINIA.

MACHINEBY- CORPORATION,

ASSIGNOB TO WOOD NEWSPAPER,

WEB SPLIOING DEVICE Application filed July 6, 1927, Serial No.

The principal object of this invention is to provide, in a Web splicing mechanism, means whereby the fresh web roll will be caused to slow down just after the splice is made so.as-.toavoid unwinding a surpluso the Web at that time, and to provide for the automatic slowing down of the propelling belt for the new web roll momentarily, when the reel on which the web roll is mounted is started into rotation after the splice is made.

The invent-ion also involves the details: and

combinations by which these objects are secured.

Reference is to be had to the accompanying l5 drawings in which Fig. 1 is anend view of a web roll with a preferred embodiment of this invention applied thereto; and

Fig. 2 is a front view of the same showing certain parts in section.

As heretofore built, web splicing devices have been provided'with means for driving the new roll so as to rotate it up to web speed revious to the actual making of the splice. 'hen the splice has been completed and the new roll attached to the old web is moved,

by the action of the reel on which the roll is mounted, the fresh roll has been still under the action of the propelling belt and the web coming from it in contact with the feed belts. The driving of the old roll at full speed at this instant has caused a flood of paper to be supplied by the new roll for a short period. This is due to the maintaining of the contact between the propelling belt and the fresh roll while the latter is being moved into its running position. It is difiicult to provide automatic means for removing the belt from the web roll at just the right instant to overcome thigdifliculty.

This invention involves the slowing down of the propelling belt on the fresh roll momentarily whiie the roll itself is moving from pasting to running position. This action prevents the unwinding of a surplus of paper'and yet keeps the web roll under the control of its propelling belt.

Referring to the drawings I have shown the invention as applied to a pasting mecha- 50 nism which involves a reel 10 mounted to f 13. I have shown the parts in the position for pasting with the web running from the 203,720. Renewed September 17, 1931.

turn on a shaft 11 supported in stationary bearings. This reel is shown as provided witha plurality of radial arms on whicharelocated the'fresh roll 12 and the running roll running roll 13 andadapted tobe brought into contact with the fresh roll. This web is actuated or controlled by feed belts 15 operated from the press in a well known manner.

Just before pasting, the fresh roll 12 is rotated up to web speed by a propelling belt 16. This belt is mounted on two pulleys 17 and 18 on shafts supported by a frame 19 that is pivoted onthe axis ofone of these shafts 20. The arm or frame 19 and another arm 21 are fixed together- The arm 21 is moved up or down to bring the belt 16 into, or out of, contact with the roll 12 by a shaft 22, arm 23 and link 24. This shaft 22 can be operated by hand or in any other desired manner.

The shaft 20 is provided with differential gearing for the purpose of this invention. This gearin consists of meshing bevel gears 25, 26 and The gear 27 is held normally stationary on the shaft 20 on which it is freely rotatable. The holding means consists, in' the present form, of a sprocket 28 fixed to, or integral with, the gear 27, a sprocket 29 fixed on the shaft 11 and a chain 30 connecting these sprockets.

The main or externalwheel 31 of the differential is driven from the press by asprocket chain or belt 32. The gear 26 is journalled radially on the inside of the wheel 31 by a stud 33. u i

In operation, the rotating wheel 31 causes the gear 26 to rotate the gear 25 and through the latter the belt driving shaft 20 on which it is fixed. The speed of the belt 16 remains constant as long as the gear 27 is held stationary by the fact that the reel is not rotating. \Vhen the reel is rotated after pastmg, to bring the roll 12 from the full line position in Fig. 1 to the dotted line position, the sprocket 23 rotates the gear 27 with it- This causes the gear 25 to lose some of its speed on account of the differential action of W delivered to the press.

the three gears of the difierential. Therefore the driving belt 16 slows down momentarily during the rotation of the reel. The flood of the web into the press is eliminated.

In this way the speed of the paper is controlled by the speed of the propelling belt which drives the fresh web roll. In this way there is no need of losing control of this web roll, which might be done by raising the belt 16 off its surface throughthe shaft 22. But in this case the web roll is positively controlled and no flood of paper is suddenly Such a flood is detrimental to the proper control of the web and may result in the wrinkling and distortion of the web, producing imperfect papers at that time.

Although I have illustrated and described only one form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art With- 'and fresh web rolls,

"fresh web roll "out departing fromthe scope of the invention as expressed in the claims. Therefore, I do not wish to be limited in these respects but what I do claim is 2-,-

1. In a web splicing device, the combina tion with a reel forsupporting the running of means for rotating the fresh web roll up to web speed, and means or automatically retarding the speed of the said rotating means when the reel is turned.

2. In a web splicing device, the combination with a rotary reel for supporting the 'resh web roll, said reel being adapted to be turned to move the fresh roll from splicing to running position, a belt for rotating the fresh web roll on its axis up to web speed, and means connected with the reel for reshaft when the reel is rotated from pasting toward running position.

5. In a device for operating a fresh web roll, the combination with a reel for supporting the fresh roll, of a differential comprising an external wheel adapted to be driven from the press, a gear mounted to rotate On its own axis and carried by said wheel, a pair of opposite gears 'both meshing with said gear, a shaft on which said opposite gears are mounted, one of said gears being fixed to the shaft and the other free thereon, a propelling means for the fresh web roll operated directly by said shaft, a wheel on the other of said opposite gears, a corresponding Wheel on the shaft of the reel, and means connecting the last two Wheels for holding the gear when the reel is not rotating, and for rotating the gear in the same direction as its companion gear of the differential when the reel is rotating in a forward directior, thereby slowing up the speed of said s a t.

In testimony whereof I have hereunto affixed my signature.

ISIDOR TORNBERG.

tarding the speed of the belt whenever the I reel is turned to move the fresh web roll from pasting toward running position.

3. In a web splicing device for a printing press, the combination with means for supporting and moving a fresh web roll toward the running web, of means for p'ropelling the on its own axis, and means controlled automatically by the movement of the first named means for slowing down the propelling means.

In a web splicing device for a printing press, the combination with a reel having means for supporting a running roll and a fresh web roll and means for guiding the web from the running roll adjacent to the surface of the web roll, of a belt engaging the fresh roll for rotating it up to web speed, means for running said belt from the press comprising a differential, a shaft to which one gear of said differential is fixed having a pulley thereon for running said belt, means extending from the reel for normally holding the opposite member of said difierential fixed, whereby the belt will be run at web speed at such a time, the last named means eing arranged to retard the rotation of said

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