US758127A - Paper-machine. - Google Patents

Description

PATENTED APR. 26, 1904.

A. W. & L. W." CASE.

PAPER'MAGHINE. APPLICATION lILED 116.18, 190a.

a SHEETS-SHEET 1.

N0 MODEL.

I Hull,

THE upnms PUERS cc vno'rouwo, wash NGTON, u c,

PATENTED: APR. 26, 1904.

A. w a L W GASE 'PAPER MACHINE.

LPPLIQATION FILED AUG. 18, 1903.

H0 MODEL.

3 SHEETS-SHEET 2- m: Mamas mine 00., mum-Limo" wnmum'ou. u. c.

No. 758,127. V PATENTED APR. 26,'1904.

A. w. a; L. w. CASE.

PAPER MACHINE.

APPLIOATION FILED AUG.18, 1903.

30 MODEL. BSHEETS-SHIBET 3.

1! mm mm (:11 mumum. Wampum, 9.1:.

UNITED STATES Patented April 26, 1904.

PATENT OFFICE.

ALFRED W. CASE AND LAWRENCE W. CASE, OF HIGHLAND PARK, CONNECTICUT.

PAPER-MAGHINE.

SPECIFICATION forming part of Letters Patent No. 758,127, dated April 26, 1904. i

w 1 Application filed August 18,1903.

To alt whom it may concern;

Be it known that we, ALFRED ll. Case an LAwRnNcn l/VCAsE, citizens of the United States, residing at Highland Park, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Paper-Machines, of which the following is a specification.

This invention relates to a machine which [O is particularly adapted for workinglong-fiber stock, heavy stock, and greasy stock.

The object is to provide a machine which will continuously produce uniform sheets of even thickness and compact texture from long,

heavy, or greasy stocksuch, for instance, as

is composed largely of leather fiber.

The stock in a pulpy condition is flowed onto an endless traveling apron above a perforated forming-table and immediately subjected to the compression of a rapidly-oscillated platen, which is so pivoted that the opening between the platen and the apron is wider where the pulp passesunder than where the pulp passes from under the platen. This 5 platen rapidly pats down the pulp'and forms it into a uniformly even continuous web and .also felts the fibers so that they will be firmly matted together. The free water drains through the perforations in the table, and the 3 edges of the forming-frame above the table form the sides of the web. As the pulp travels with the lower apron it is carried beneath an upper apron and subjected between the two aprons to the compression of the lower bed-rolls and the upper alternately-arranged squeeze-rolls and the lower bed-rolls and the alternately-arranged upper press rolls, which are forced down by weighted levers, adjusted to bear heavier and heavier on 1 the pulp as it advances. After passing between the apron feed-rolls the web is drawn between cutter-cylinders and cut into sheets.

Figure 1 of the accompanying drawings shows a side elevation of one end of a machine 15 which embodies the invention. Fig. 2shows a side elevation of the other end of the machine. Fig. 3 shows a side elevation of the cutter end of the machine with the drivinggears omitted. Fig. 4; shows a plan of the Serial. No. l69, 9 08. (Nu model.)

cutter end of the machine, and Fig. 5 shows a plan of the pulp-receiving end of the ma- I chine.

Fibrous pulp in a comparatively thick condition is allowed to flow from the spout 1 of the supply-pipe 2 when the valve 3is open onto the inclined trough 4 and down the inclined trough 5, that rests upon the rear edge of the pulp-forming frame 6. The formingframe, which receives the pulp as it flows down, rests upon the perforated forming-table 7 ,which is supported by side bars 8, that are mounted on wedge-blocks 9. When the clamp-nuts 10 on bolts that extend from the side bars through vertical slots 11 in the side frames 12 and the clamp-nuts 130m bolts that extend through inclined slots 14 in the upper Wedge-blocks and through thever'tical slots in the side frames are loosened, the upper wedge-bl0cks may be moved one way or the other for raising or lowering the formingtable to the desired height. ing-table has been adjusted the clamp-nuts are tightened to hold it in position.

Cleats 15 are fastened to the sides of the table so asto engage the projecting ends of the back 16 of the frame and prevent it from being carried forward by the movement of the apron 17, which passes between the frame and the table. The apronis preferably an endless strip of line mesh wire-cloth, but may be any other material having sufficient strength and the requisite mesh.

The platen 18,which is movable up and down between the sides of the forming-frame, is fastened to bars 19, that are hinged to the side frames 20. A shield 21 is attached to the back edge of the platen to prevent the pulp from flowing onto the top of the platen, and packings 22 may be arranged on the shield to make tight joints between the ends of the shield and the sides of the frame.

After the formthe bars 19, attached to the top of the platen.

On an end of this shaft is a rocker-arm 26,

which is connected by a rod 27 with a crankpulley 28, mounted on. the side frame 20. This crank-pulley is adapted to be belted to any source of power, and when the crank is ro' tated the platen is oscillated Vertically between the sides of the forming-frame and above the perforated forming-table, the length of the oscillations being determined by the adjustment of the crank on the pulley.

The lower apron 17 passes from the roll 29 at the end of the machine over aroll 30, mounted at one end of the forming-table, and between the perforated forming-table and the solid oscillatory platen and after passing over a roll 31, mounted at the other end of the forming-table, passes over bed-rolls 32. This apron is drawn over the bed-rolls by the lower feedroll 33 and passes down around an idler-roll 34, then over a stretching-roll 35, the shaft of which is held in bearings mounted upon screw-threaded spindles 36. From the stretching-roll the lower apron passes beneath an idler-roll 37, over a guiding-roll 38, and after passing'around an idler-roll 39 travels back to the roll 29. The guiding-roll 38 is arranged 'With a screw-adjustment 40, whereby it may be adjusted to'cause this apron to run straight.

Near the guiding-roll is a perforated pipe .41, which is adapted to be connected with a water-supply. By means of this jets of water may be sprayed upon the lower apron for washing out matter that has become embedded in its meshes. Beneath the sprayer is a tray 42 for catching the water that is used for washing this apron.

Supported by standards so'as to rest upon the aprons between the first of the bed-rolls are squeeze-rolls 43, and bearing down upon the aprons between the last of the bed-rolls are press-rolls 44. Levers 45', pivoted to stand ards and provided with weights 46, are arranged to force down the shafts of the pressrolls, the weights being preferably so arranged as to increase the pressure upon the aprons.

toward the feed-rolls.

The upper apron 47 passes around an idlerroll 48, supported by bearings at the top of the frames 20, and then passes below the squeeze-rolls and the press-rolls to the upper feed-roll 49. After passing around this feedroll this apronpasses under a tightening-roll 50, the bearings of which are supported in a common manner upon vertical screw-threaded spindles 51, and then.passes over a guide-roll 52. Near this guide-roll is a perforated pipe 53, that is adapted to be connected with awater-supply, whereby the upper apron may be washed and pulp loosened from its meshes. A tray 54 is located beneath this sprayer to catch the water. From the guide-roll this apron travels back to the idler-roll 48.

The pulp is first compacted by the oscillations of the platen and the free water drained out through the perforated forming-table. The expression of water and the compacting of the web is continued by the squeezing together of the upper and lower aprons as they driving-pulley 63.

.ing the stock or separating the fibers.

pass over the bed-rolls and under the squeezerolls. The pressing is continued to a greater degree by the pressing together of the aprons as they pass over the bed-rolls and under the weighted press-rolls, and the pressing is concluded by the squeeze given as the aprons pass between the feed-rolls.

The shaft of the lower feed-roll is held in bearings attached to side frames 55, while the shaft of the upper feed-roll is held by bearings that are forced down by levers 56, pivoted to the side frames and provided with weights 57. The pivotal supports of these levers that press down the upper feed-rolls are adjustable by hand-wheels 58, attached to threaded spindles that turn in the upper ends of.the side frames.

The shafts of the feed-rolls have intermeshing gears 59, and the lower, shaft is also provided with a worm-wheel 60,-meshing with which is a worm 61 on a shaft 62, that has a By these mechanisms the feed-rolls are rotated, so as to draw between them the aprons and the pulp.

To assist the feed-rolls in moving the aprons, the shafts of several of the bed-rolls are provided with worm-wheels 64, meshing with which are worms 65 on a shaft 66, that has a driving-pulley 67.

The compacted web of pulp is carried from the feed-rolls over a supporting-roll 68 to cutter-rolls 69, the upper of which has blades 70, and the lower has blade-beds 71. The shafts of the cutter-rolls are supported in bearings fastened to the side frames 72 and are provided with intermeshing gears 73. The lower shaft also has a worm-wheel 74, meshing with which is a worm 75 on the shaft 62.- Two sheets of compressed pulp are severed at each revolution of the cutter-cylinder.

When the rolls are placed alternately instead of one above the other, the water is pressed out more thoroughly without crush- The weighted press-rolls depress the aprons, with the intermediate pulp, between the bed-rolls, so that the aprons and pulp are first strained downwardly over a bed-roll, then upwardly under a press roll, and as the press roll weights are preferably arranged to bear down heavier and heavier as the aprons and pulp pass toward the feed-rolls the straining is greater and the pulp compacted more densely until it receives its final pressure when passing between the feed-rolls.

The invention claimed is- 1. Apaper-machine having traveling aprons, feed-rolls for moving the aprons, bed-roll for supporting the aprons, squeeze-rolls bearing down upon the aprons between bed-rolls, pressrolls bearing down upon the aprons between bed-rolls, and weighted levers for forcing down the press-rolls, substantially as specified.

. 2. A paper-machine having traveling aprons, feed-rolls for moving the aprons, bed-rolls for IIO supporting the aprons, squeeze-rolls bearing down upon the aprons between bedrolls,press rolls bearing down upon the aprons between bed-rolls, levers for forcing down the pressrolls, and weights arranged to increase the force of the levers toward the feed-rolls, substantially as specified.

3. A paper-machine having a perforated forming-table, an oscillating platen above the forming-table, traveling aprons, feed-rolls for moving the aprons, bed-rolls for supporting the aprons, squeeze-rolls bearing down upon the aprons between bed-rolls, press-rolls hearing down upon the aprons between bed-rolls, and Weighted levers for forcing down the press-rolls, substantially as specified.

4. A paper-machine having a perforated forming-table, a forming-frame loosely resting' upon the forming-table, an oscillating platen located in the frame and above the forming-table. traveling aprons, one of which passes between the platen and the formingtable, feed-rolls for moving the aprons, bedrolls for supporting the aprons, squeeze-rolls bearing down upon the aprons between bedrolls, press rolls bearing down upon the aprons between bed-rolls, and weighted levers for forcing down the press-rolls, substantially as specified.

5. A paper-machine having a perforated forming-table, adjustable wedges supporting the forming-table, an oscillating platen above the forming-table, traveling aprons one of which passes between the platen and the forming-table, feed-rolls for moving the aprons, bed-rolls for supporting the aprons, squeezerolls bearing down upon the aprons between bed-rolls, press-rolls bearing down upon the aprons between bed-rolls, and weighted levers for forcing down the press-rolls, substantially as specified.

6. A paper-machine having a perforated forming-table, a forming-frame resting upon the table, an oscillating platen above the table, traveling aprons, one of which passes between the platen and the forming-table, feedrolls for moving the aprons, and bed-rolls for sugporting the aprons, substantially as specifie 7 A paper-machine having a perforated forming-table, a forming-frame resting upon the forming-table, means for adjusting the height of the forming-table, an endless apron traveling over the formingtable, a platen movable above the forming-table in the forming-frarne, bars hinging the platen to a supporting-frame, a rocker-shaft with rockerarms connected with the platen and a rockerarm connected with a crank, feed-rolls for moving the apron, and bed-rolls for supporting the apron, substantially as specified.

' 8. Apaper-machine havingtraveling aprons, feed-rolls for moving the aprons, bed-rolls for supporting the-aprons, squeeze-rolls bearing down upon the aprons between bed-rolls, pressrolls bearing down upon the aprons between bed-rolls, weighted levers for forcing down the press-rolls, and cutter-cylinders, one of which has a cutting-blade and the other a cutting-bed, substantially as specified.

ALFRED W. CASE. LAWRENCE WV. CASE.

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