US1796912A - Controlling device for running webs - Google Patents

Description

March 17, 1931. H w, WOOD 1,796,912

CONTROLLING DEVICE FOR RUNNING WEBS Original Filed July 2. 1927 2 Sheets-Sheet 1 March 17, 1931.

H. A. W. WOOD CONTROLLING DEVICE FOR RUNNING WEBS Original Filed July 2. 1927 2 Sheets-Sheet 2 Patented Mar. 17, 1.931

\ unrrso STATES HENRY A. WISE WOOD, NEW. YORK,

PATENT OFFICE Y., ASSIGNOR 'IO WOOD NEWSPAPER MA- CHINERY CORPORATION, OF NEW YORK, N; Y., A CORPORATION OF VIRGINIA CONTROLLING DEVICE FOR RUNNING WEBS Application filed July 2, 1927, Serial No. 203,15 Renewed January 10, 1930.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a side view showing the end of a running web roll and controllingdevice constructed in accordance with thisinvention;

Fig. 2 is a front elevation as indicated by the arrow 2 in Fig. 1, and

Figs. 3 and 4 are similar views showing another form in which this invention can be carried out.

I have shown the invention as used in connection with the web roll 10 on an arm of a reel 11 supported in position for delivering the web to guide rolls 12 and 13 on its way to the press. Feed belts have been employed heretofore in contact with such a roll as this for feeding the web and particularly for insuring constant rotation of the rolls 1O neither too fast nor too slow and therefore a constant tension on the web.

In place of such belts I provide a frame comprising a pair of arms 16 pivoted on a fixed shaft 17. On the bottom of the frame 16 is a shaft 18 carrying a roller 19. On this shaft 18 are pivoted two arms 20 constituting a frame and carrying on the bottom a shaft 21 on which is a lower roller 22.

The shaft 17 is driven at the proper rate of speed by some suitable drive, such as a chain 24 and a sprocket on the shaft. Also the shaft 18 is driven from this shaft by a chain 23 and sprockets. The shaft 21 is similarly driven by a chain 25.

It will be seen that this constitutes a flexible means for driving the roll 10 and controlling the speed with which it feeds the web toward the press.

The sprocket chain 24 is driven from the press at such a speed as to give the rollers 19 and 22 a surface speed equal to the desired speed of the web. The frame composed of the arms 20 is free to swing on the shaft 18 so that in all positions of the roll 10 as it goes around with the reel, these two rollers will be in contact with the web roll as long as it is delivering to the press. Also its size makes no difference except that a greater weight is. applied to the surface of the roll, the larger it is, in the position shown in Fig. 1. Of course, the roller 19 is always held in contact with the web roll 10 by gravity and it is free to move in and out as will be obvious.

In the form shown in Figs. 3 and 4 the same principles are employed but in this case the parts which are not numbered the same as in the first two figures are constructed a little differently. For example, from a shaft 27 swings a frame 26 carrying a shaft 29. This shaft 29 pivotally supports a pair of heads 28 which are free to swing upon it and they constitute a frame also. This frame has two shafts 18 and 21 supported at its ends and each one carrying a roller as 19 and 22. The rollers are driven by chains and sprockets 23, 24 and 25 or in any other convenient way.

In either of the forms shown'the stretching and slipping of the belts usually employed is eliminated, the construction is simplified and there is greater flexibility in the alignment of the feeding rollers with the roll of paper in the second form than in the first. Also they run by gravity on the roll in all positions of the latter and depend upon grav- I bination of a frame with a second frame pivotally connected therewith and sup mounted, of a supporting ported thereby, two rollers mounted on said frames, and means for rotating said rollers, said rollers being arranged to contact directly with the surface of a web roll for controlling the feed of the web therefrom.

2. In a web feed controlling device, the combination of a freely pivoted frame with a second frame pivotally connected therewith and supported thereby, two rollers mounted on the second frame, and means for driving said rollers positively, said rollers being arranged to come directly into contact with the surface of a web for feeding it.

3. In a web feed controlling device, ,the combination with a web roll movably frame, a shaft extending across the supporting frame parallel with the axis of the shaft of the roll, a second frame supported from said shaft, and pivoted freely thereto, a shaft extending across the second frame, means for driving said shafts positively, and a roller mounted on each of said shafts independently of said driving means and adapted to directly engage the surface of the web roll.

4;. I11 a web feed controlling device for a printing press, the combination with a web roll movably mounted, and a pivoted supporting frame normally held back from a vertical position by the web roll, of a second frame pivoted at the lower end of the first named frame, two shafts on the second frame, a roller mounted on each of said two shafts and adapted to engage the surface of the web roll, and means independent of said rollers for driving said rollers positively from the press.

5. In a web feed controlling device for a printing press, the combination with a web roll movably mounted, and a pivoted supporting frame normally held back from a vertical position by the web roll, of a second frame pivoted near its center at the lower end of the first named frame, two shafts on the second frame, one above and one below the pivots thereof, a roller mounted on each of said two shafts and adapted to engage the surface of the web roll, the second frame being free to swing so as to cause both of the rollers thereon to engage thev web roll in all positions thereof and irrespective of its size, and means for driving said rollers positively from the press. I In testlmony whereof I have hereunto affixed my signature.

, HENRY A. WISE WOOD.

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