US2037353A - Web control for printing presses - Google Patents

Description

April M, 1936. TORNBER'G WEB CONTROL FOR PRINTING PRESSES Filed Nov. 18, 1932 2 Sheets-Sheet 1 rber 4 @y mrPMyJ 7 far Canam.

April 14, 1936. l. TORNBRG WEB CONTROL FORv PRINTING PRESSES Filed Nov. 18, 1952 2 sheets-sheetl 2 f (QM fol-ww Patented Apr. 14, 1936 Y PATENT OFFICE WEB CONTROL FOR PRINTING PRESSES sidor Tornberg, Plainfield, N. J., assignor `to Wood Newspaper Machinery Corporation, New York', N. Y., a corporation of Virginia Application NovemberlS, 1932, Serial No. 643,194

4 Claims.

This is an improvement on my prior application for patent, Serial'v No..264,'2`48, filed March 23, 1928.

The principal objects of this invention are to provide a-vcombinationl "of a variable speed device for regulating the tension of a running web with means for clutching the tensioning device to the press to run at web speed for bringing the web roll up to web speed preparatory to splicing; and to provide means for varying the speed of the control device and the tension of the web, either by hand or automatically, by the slackness or tautness of the web.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 is an end view of a reel for carrying the web rolls, showing the roll controlling belt in two positions;

Fig. 2 is a plan of the same, and

Fig. 3 is a sectional view on the line 3-3 of Fig. 2.

Heretofore tension on the web of a printing press has been supplied either by belts running in the same direction as the paper or by stationary straps. In the case of the former the only available tension is the slight difference in speed which is generally provided for between the belts and the paper, requiring extremely heavy belt arms and at least two or three belts of considerable width to produce the proper amount of tension.

The invention is shown as applied to a well known type of reel I having a fresh roll B, about to be pasted and bearings for a third roll, in the usual way, although it is capable of being used with other types of reels. This reel is adapted to be operated by a motor.

The web passes from the running roll over a guiding roller 2a and thence over a tension ro-ll 2, guiding roller 3, fioating roller 4 and guiding roller 5 into the press. The tension roll 2 is springpressed in any desired way.

It will be understood that the leading end of the web on the fresh roll B has been temporarily fastened to the surface of the roll by means of grease, while the outer surface of the edge has the usual splicing points, not shown. AThese are properly placed thereon in a manner now well known preparatory to attaching it to the web W coming from the expiring roll.

It is necessary to control the rotation of the roll B on its axis. For this purpose I provide a friction device, preferably in the form of one or more belts 6 arranged in a caterpillar tread form.: The details of? this belt are not shown or described. here indetail as the details of it are not a 'feature of this invention but have been claimed in?. my prior application, Serial No. Z`5 131,524, filed August 24, 1926. rIt is raised and lowered by a handle ISU.

The belt 6 is driven by suitable chains from a driving shaft l which is provided with a double faced clutch 8 on the opposite sides of which are l0 freely mounted two chain sprockets 9 and I0. The part that is called the clutch is slidably keyed on the shaft I and operated by a lever I3, part of which constitutes a yoke for operating this clutch.

The sprocket wheel or pulley I 0 is connected by means of a suitable chain I I toa driving shaft I2, which it will be understood, is so geared to the press as to drive the roll B in the same direction as that of the web and at the 20 same surface speedI so that the splice may be made. It will be obvious that the pulling of the handle I3 down as indicated in Fig. 3 throws the clutch 8 into contact with the clutch on the sprocket I Il. This connects the belt 6 with the 25 press and runs the belt in a forward direction. After the splice, however, by throwing the handle I3 upwardly, clutch 8 is thereby connected with the sprocket or pulley 9, which in turn is connected with the motor 2T. The motor 2l may 30 then be run so that the belts 8 travel in the same direction at a slower speed and thereby give the desired tension.

Current is supplied to the motor 21 through suitable adjustable resistances 29 which may be 35 controlled either manually or by the position of the tension roller 4 which is carried in arms 28 to which the controlling resistance 29 is attached. Thus the speed of the motor 21, and therefore the tension on the web, may be va- 40 ried either at will or automatically by the slackness or tautness of the web as determined by the position of the roller 4.

The rotation of the reel in the position shown in Fig. 1 is` controlled by push buttons not shown. 45 A splicing member, as a brush 22, is forced into the dotted position shown in Fig. 1 carrying the web W with it and causing the pasted points of the roll to adhere thereto, thereby attaching the new roll to the expiring web.

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 without departing from the scope of the invention as expressed in the 55 claims. Therefore, I do not wish to be limited in these respects but what I do claim is:-

1. In a printing press, the combination With a support for a web roll, of a shaft constituting a part of the press and operated thereby, a second shaft, a pulley free on the second shaft driven from the rst named shaft, said pulley having a clutch section, and a clutch on the second shaft adapted to connect the pulley therewith to run the second shaft, friction means adapted to engage the surface of the running roll supplying the running web to the press, means for running said friction means from the second shaft to drive the roll at web speed for splicing, said clutch having teeth on both sides, a second pulley on the shaft having teeth adapted to be engaged by the opposite teeth on the clutch to connect that pulley with the shaft, and a motor for operating the second pulley and turning the shaft to run the friction means more slowly than the web roll to 'apply tension.

2. In a printing press, the combination with means for rotatably supporting a web supply roll, a shaft, means for running the shaft from the press, a friction device for engaging the surface of the roll, means for connecting said shaft with the friction device to run the latter forward, a motor, and means for connecting the motor with the shaft for running the friction device slowly to apply tension to the running web.

3. In a printing press, the combination with means for effecting a splice, of press-driven means comprising a power transmitting member for bringing the fresh roll up to web speed, a motor for controlling web tension, and means for disconnecting the press-driven means from said power transmitting member and connecting the motor with the power transmitting member for the purpose described.

4. In a Web-splicing device, the combination of press-driven means comprising a belt for bringing the fresh roll up substantially to web speed, means for effecting the splice, a motor adapted to be connected with the belt for controlling web tension, and means for disconnecting the pressdriven means from the belt after the splice is made and connecting the motor with the belt for controlling tension of the web from the new running roll. y

vISIDOR TORNBERG.

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