US225491A - Paper-damping machine - Google Patents

Description

PATENT EEicE.

WALTER SCOTT, OF CHICAGO, ILLINOIS.

PAPER-DAMPING MACHINE. 4

SPECIFICATION forming part of Letters Patent No. 225,491, dated March 16, 1880. Application iiled August '7, 1879.

To all whom it may concern:

Be it known that I, WALTER SCOTT, of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improve ment in Paper-Damping Machines, which is fully described in the following specification, reference beinghad to the accompanying drawings, in which- Figure l represents an end elevation of a machine' embodying my improvements; Fig. 2, a rear elevation of the same 5 Fig. 3, a plan view of the changeable speed mechanism; Fig. 4, a detail elevation of the driving-gear at the back end of the machine 5 and Fig. 5, a detail section taken through the wheel Gr on its shaft, as represented in Fig. 3.

My invention relates to machines for damping paper as it is drawn over. a rest or table from the roll on one side thereof, and rerolled,

after damping, on the other side; and the object of the invention is to provide for automatically andregularly changing the speed at which the roller is driven on which the webof paper is rerolled to correspond withthe gradual increase in size of said roll.

It consists of a pair of conical rollers in a paper-damping machine, one of which receives motion from any suitable power, and the other of which is connected positively to the rerolling-shaft, in combination with a device for transmitting motion from the driving-roller to the other conical roller, said device being adapted to move automatically from the larger to the smaller end of the driving-roller as the roll of paperon the rewinding-shaft increases in size.

It also consists in special devices and comcombinations of devices, all of which will be hereinafter more fully described, and pointed out definitely in the claims.

The main parts of the damping-machine are well known, and will require no more than a simple reference to them here. A

In the drawings, A represents the supporting-frame, and B the shaft onwhich the spool is placed, containing the dry paper, and B a second shaft at the other end of the machine', which receives the spool on which the paper is to be rewound, the" usual wetting-table C being arranged between these two shafts, and somewhat above them,overwhichis the sprayer c, which throws al ne spray of water above the paper as drawn over the table.

The rerolling-shaft B is mounted in stationary bearings on the supporting-frame, and at the rear end of the machine is provided with a fast gear-wheel, b, which is driven by a band-wheel, D, through a pinion, d, connected to the bandwheel, and a transmitting-gear, d', engaging withv both the pinion and the wheel b. The wheel D is driven by a band, D, from a similar wheel, c, on the outer end of a shaft, e, which also carries a long conical roller, E, the shaft being mounted in the upper portion of the uprightv part of the supportingframe.

In front of the conical roller E is a similar y ,motion is communicated to it in any suitable way.

Instead of the bands usually employed with these conical rollers I use a-friction-wheel, G, to transmit motion from one conical drivingroller to the other. This friction-wheel is annular inconstruction, and is mounted lon a hub, g, arranged on a stationary rod, H, on which it is free to slide back and forth, but is held from rotating by a spline, h, on the rod, fitting in a groove, g', in the hub. The rod H is, of course, arranged parallel with the inner faces of the two conical rollers and. diagonally to their axes, so that the plane of rotation of the friction-wheel is inclined to the axis of the conical rollers. The rod H is also arranged a little above the plane of the shafts of the conical rollers, so that the axis of the frictionwheel will be above the axes of the conical rollers. With this arrangement of these devices the rotation of the driving-roller F is not only transmitted to the roller E, but at the same the friction-wheel will be moved back and forth automatically on its supportingshaft, the direction depending upon the direction in which the drive-roller is rotated.

The mechanism being thus arranged so that the rotation of the driving-roller F in one direction will cause the wheel G to move longitudinally on its rod from one end of said rod IOO to the other, while the opposite revolution of said driving-roller will move the wheel in the opposite direction on its rod, it is sufficient so to arrange the connections between said conical rollers and the rewinding-roll that longitudinal motion of the intermediate wheel, G, shall be caused from the larger to the smaller end of the driving-roller IP while the roll is rewinding, in order to effect a retardation of said rewinding-roll as it increases in size. It is plain that the direction of the rotation of the driving-roll to cause the motion of the intermediate roller in the proper direction lon gitudinally to retard the speed of the rewindingroll at the proper time will depend upon Whether the location of the rod on which the intermediate roller slides is above or below the plane of the conical rollers. Manifestly, also, the amount of taper ofthe conical rollers must be adapted to the amount of increase of the rewinding-roll, in order to cause the paper to pass at a uniform rate of speed from one roll to the other under the sprinkler.

The boxes c2 f', in which the shafts of the conical rollers have their bearings, are adjustable horizontally, and the ends of the rod H are adjustable vertically, so-that the proper relation of the conical rollers and frictionwheel may always be maintained. The adjustments may be effected by any suitable means.

In the drawings the parts-mentioned are shown supported in slots, in which they are adjusted and held by means of set-screws.

As stated above, the reciprocation ofthe friction-wheel is effected automatically by the action of the conical rollers thereon when rotated. The friction-wheel is returned to its starting position, as shown in Fig. 3 of the drawings, by reversing the movement of the roller F, which has the effect to drive the friction-wheel in the opposite direction to that above mentioned.

In order to insure the constant sliding movement of the friction-wheel I also provide mechanism by which the said wheel is moved positively on its shaft as the new roll gradually fills. This is accomplished by means of a segmental rack, I, which is fastened to one end ofthe rock-shaft t', on which the friction-roller J is mounted. This latter roller is arranged to drop against the new roll of paper and run in contact therewith underneath the web, as shown in Fig. l ofthe drawings. As the roll fills it is evident that this friction-roller will be gradually raised, thereby oscillating the rock-shaft by the arms j, on which the roller is mounted, and which are fastened to the rockshaft, and this movement will, of course, give a corresponding vibration to the rack I.

A gear-Wheel, K,is mounted on a short shaft just over the rack, which engages with a pinion, k, on the same shaft and connected to the wheel K.4 The gear-wheel K engages with a pinion, L, connected with a band -pulley, M, both being mounted on the same short shaft at one side of the wheel K.

A band or cord, N, is wound around the pulley M, and one end thereof carried up over the pulley m and fastened to one side of the hub of the friction-wheel G. The other end is carried up and across the machine over the pulleys a and secured to the other side of the hub. The vibration of the segmental rack, effected by the gradual increase in the size of the paper roll, Will evidently impart a slow rotation to the band-pulley M, and the gearing is arranged to drive the said pulley by this movement in the proper direction to Wind .up on that part of the cord which will tend to draw thc friction-wheel G toward the smaller end of the conical roller F, and, of course, producing a pull in the opposite direction when the pulley M is reversed. The sliding movement of the friction-wheel G, above mentioned, will therefore be eEected positively through mechanism which is operated by the` gradual increase in the size of .the paper roll, thereby insuring absolute certainty in the movement of Athe friction-wheel to effect the desired retardation in the revolution of the paper roll as it fills. The same effect upon the frictionwheel will be produced by locating the axis of the said wheel belo7 the plane of the axes of the conical rollers, or at one side thereof if the said axes are not located in a horizontal plane 5 and therefore I do not limit myself to the precise arrangement of these devices shown and described.

A lever, O, may be fastened to the rockshaft t', by means of which the rack I may be vibrated to reverse the speed changer and bring it back to the proper position for starting again.

A brake, P, is pivoted to the supportingframe and arranged so that its free end Will rest upon the rim of the segment which carries the rack, this rim being smooth underneath the brake. A set-screw, 19,'above the brake regulates the pressure of the latter upon the segment and thereby makes a frictional tension for 'the roller J, which regulates the pressure which the latter bears upon the roll of dampened paper. This mechanism forl reciprocating the speed-changer by the gradual increase in the size of the roll is applicable to other devices besides the friction-Wheel here shown and described. The ordinary band running over the two conical rollers may be employed, and with a sliding band-shifter properly mounted and connected, by the cord N or other suitable device, with the gearing herein shown, it may be shifted from one end of the rollers to the other by the oscillation of the rock-shaft, as above described.

The pressure-roller J with its arms evidently operates as a lever to oscillate the rock-shaft and segmental rack, the lever being actuated by the roll of paper as it increases in size. Now'this lever may be of some other construction, it being necessary only that it shall be so constructed and arranged that its free end will be moved by the roll of paper as it increases in size, and that it is connected to the rack so that the latter will be vibrated With- IOO IOS

IIO

-IZO

the vibration of the lever. Then, whatever contrivancc may be employed for transmitting motion from one conical roller to the other, (provided always that it is movable,) it may be shifted automatically by the gradual increase in the size of the new roll of paper by connecting it properly with thegearing herein shown, or other equivalent devices, so as to keep the movementof the web of paper under the sprinkler always uniform, thereby insuring a uniform wetting of the paper.

I do not broadly claim a pair of conical rollers having an automatically-sliding connection between them for varying the speed, such a combination of devices being old.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is i 1. The rerolling-shaft B', in combination with the gear-wheels b d d', the band D', the band-wheels D e, conical rollers E F, and reciprocating friction-wheel Gr, substantially as described. Y

2. A segmental gear-rack, I, connected with a lever which is vibrated by the paper roll as it ills,in combination with the pulley M, driven by the rack, cord N, friction-Wheel G, and conical rollers F E, constructed and operating substantially as described.

3. The friction-roller J, arranged to run in contact with the roll of paper as it is rerolled on the shaft B', in combination with the rockshaft z', segmental rack I, gear-wheels K, k,

and L, the pulley M, cord N, pulleys m and n, reciprocating friction-wheel Gr, and conical rollers F E, substantially as described.

4. The friction-roller J, running in contact with the paper roll on shaft B', in combination with the rock-shaft i, segmental rack I, and adjustable brake P, substantially as described. i

5. In a paper damping machine, the rerolling shaft B', in combination with the conical rollers F E, a mechanism for driving said shaft from the rollers, a sliding friction-wheel, G, for transmitting motion from one roller to the other, and mechanism for moving said wheel laterally, operated by the roll of damp paper as it increases in size in rerolling, whereby the speed is gradually and constantly slackened by thegradual llng of the paper roll, substantially as described.

6. The conical rollers E and F, in combina tion with a friction-wheel, Gr, running in contact with each and adapted to slide upon a rod arranged outside the plane of the axis of said rollers, whereby' longitudinal motion of the wheel upon said rod is produced, said conical rollers and friction-wheel being adapted to operate in connection with the rewinding-roll of a paperdamping machine, as and for the purpose set forth.

WALTER SCOTT. Witnesses:

JNO. G. MAGGREGOR, l W. O. OoRLIEs.

Images