US1140737A - Machine for beating paper-stock. - Google Patents

Description

H. A. FRAMBACH.

MACHINE FOR BEATING PAPER STOCK.

APPLICATION FILED MAR. 26,1914.

Patented May 25, 1915.

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THE NORRIS PETERS 60.. PHOTO-LITHQ, WASHINGTON. D. C.

H. A. FRAMBACH.

MACHINE FOR BEATING PAPER STOCK.

APPLICATION man MAR. 26. 1914.

1,140,737. Patented May 25, 1915.

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[HE NORRIS PETERS Cow. PHOTO-LITHOH WASHINGTON. D. L.

H. A. FRAMBACH.'

MACHINE FOR BEATING PAPER STOCK. APPLICATION FILED MAR. 26, 1914.

1,140,737. Patented May 25, 1915.

3 SHEETSSHEET 3 e/mm 70 7/6 w [HE NORRIS PETERS 60.. F'HOTOJJTHQ. WASHINGTON. D. L.

HENRY A. FRAMBACI-I, OF CHEBOYGAN. MICHIGAN.

MACHINE FOR BEATING PAPER-STOCK.

Specification of Letters Patent.

Patented May 25, 1915.

Application filed March 26, 1914. Serial No. 827,369.

To all whom it may concern 'Be it known that I, HENRY A. FRAMBAOH, a citizen of the United States, and a resldent of Cheboygan, in the county of Cheboygan and State of Michigan, have invented certain new and useful Improvements in Machines for Beating Paper-Stock, of which the following is a specification.

This invention relates to paper makin and relates particularly to beating engines for beating and washing paper stock.

Prior to my invention, it has been the general practice toutilize relatively large beater rolls, say for ordinary purposes, about five feet in diameter, which have been mounted in such manner that approximately the lower halves of said beater rolls will be submerged, said beater rolls operating both to beat and wash stock and also to propel or feed the stock. Owing to the relatively high speed at which said beater rolls are operatedapproximately 200 R. P. M. and the large portion of said rolls which is submerged in operation, a great deal of power is required for driving said beater rolls.

The main object of my present invention is to reduce the power required for driving the beater rolls and engines and to increase the capacity and efficiency of the beater.

A further object of the invention is to reduce the size and, consequently, the cost of the beater rolls.

Another object of my invention is to provide simple means at the receiving end of the beater mechanism to prevent the injury or clogging of the beater roll by the wedging of compacted masses of pulp between the plates of the beater roll and the bed plate,- said means being so constructed that said masses, before they pass under the beater roll, will be automatically shredded or disintegrated, as more fully hereinafter set forth.

A still further object of this invention is to provide a splash or impact member at the discharge end of the beating mechanism, against which a large portion of the discharged vpulp will be thrown, the face of this splash member being provided with a roughened or cutting surface, such, for instance, as is obtained by the use of carborundum, whereby the force with which the pulp is discharged from the final beater roll is utilized to assist in disintegrating the pulp,

as more fully hereinafter set forth.

To effect these objects, a beating engine of my invention comprises the various features, combinations of features and details of con struction hereinafter described and claimed.

In the accompanying drawings, in which my invention is fully illustrated,-Figure l is a side elevation of a beating engine of my invention, partly in section; Fig. 2 is a top plan view thereof; Fig. 8 is an enlarged sectional view on the line 33 of Fig. 2; Fig. 4.- is a sectional view on the line 1-4 of Fig. 3; and Fig. 5v is a sectional View of one of the bearing posts or standards on the line 55 of Fig. 1.

Referring now to the drawings, A designates, as a whole, the vat or tank of my improved beater, which is divided lengthwise by means of a central partition a, which terminates short of the ends of said vat or tank by a distance substantially equal to one-half the width of said tank or vat, so that the spaces at opposite sides of said partition will be in open communication with each other around the ends of said partition, thus converting the interior of said tank or vat into a continuous passageway, corresponding to the outline of said tank or vat.

The beating and washing instrumental} ties comprise one or more, preferably two, beater rolls, which are designated in the drawings by the reference numerals 1 and 2, and which are secured to rotate with shafts 3 and 4 rotatably mounted in suitable bearings 5 and 6 supported on posts 7 and 8 located outside of said tank or vat, preferably in such manner that said bearings may be adjusted vertically.

In accordance with my invention, the beater rolls 1 and 2 are made relatively small, say about 30 inches in diameter, and the shafts 3 and 4 are so positioned that the lower sides of said heater rolls will dip into the stock contained in the tank or vat A only a short distance, say from about two to four inches. With this construction, it is obvious that the stock will ofl'er only slight resistance to the rotation of said beater rolls, and that the power required for driving them at a desired rate of speed will be much less than that required for operating the old style boaters in which practically one-half of the beater rolls was submerged.

The bed plates 9 and 10 which cooperate with the beater rolls or drums 1 and 2, respectively, are supported at a distance 7 above the. bottom of the tank or vat A, in

.at the front or approach side of the first beater roll and bed plate, and a bridge 12, which closes the spaces between said bed plates, a rear wall 13 preventing access of the water and stock'to the space beneath the bed plates. In practice, the inclined surface 11, bridge 12 and rear wall 13 are preferably made of concrete, the bed plates 9 and 10 being embedded directly therein and supported thereby.

The stock is adapted to be fed to the beater rolls 1 and 2 by means of what may be referred to as a paddle wheel, designated as a whole by 14:, which preferably consists of a drum 15 aflixed to a shaft17 and having aiiixed to its surface a series of parallel blades or paddles 16, the shaft being journaled to rotate freely in bearings mounted on the walls of the vat. This paddle wheel is mounted in such position in front of the intake side of the beater mechanism that the outer edges of its paddles will sweep upwardly close to the upwardly inclined wall 11, so as to thereby lift the stock and deliver it to the intake side of the first beater roll. The drum or cylinder 15 of the paddle wheel as well as the paddles extend from side to side of the intake channel of the vat, so that, as the paddle wheel rotates, the quantity of pulp that will fall back into the vat around the ends of the cylinder and the edges of the blades will be negligible in quantity, thereby conducing greatly to uniformity of the beating or grinding action of the apparatus.

At the intake side of the first beater roll, I locate a device for disintegrating or shredding the pulp immediately before it enters between the beater roll and the bed plate. In the present instance, this device is shown as consisting of a cylinder at whose shaft is journaled in suitable boxes on the wheels of the vat and whose surface is provided with a series of teeth I). This shaft or roll is adapted to be driven in the direction of the arrows by any suitable means,-preferably by means of a cross-belt 0 connecting a pulle} on the shaft to a lar er pulley on one of the shafts of the beater rolls. By thus providing this roller shaft 6/ with a series of teeth and rotating it faster than the beater roll and in the opposite direction thereto, it

will be seen that any pulp that approaches mounted in the apparatus that the ends of its teeth. will work close to the working edges of the beater roll.

While my invention contemplates the use of any desired or approved form of beater roll, I prefer to use the form of roll particularly shown in Figs. 3 and 4 of the drawings, comprising usual end heads 18 and one or more, as shown two, intermediate heads 19, all secured to rotate with the beater roll shaft. Formed in the perimeters of said heads are slots 20, which are adapted to receive the inner edges of fiy bars 21, which are adapted to be secured in position in said slots 20 in any desired manner. As shown, said fly bars are secured to the intermediate heads by means of bayonet slots 22 formed in said fly bars, which are adapted to engage bridges 23 which extend across the outer sides of the slots 20 in said inner heads 19, and the eXtreme heads or spiders 18 by means of bands or hoops 2%, which engage slots 25 formed in the ends of the fiy bars and are shrunk upon the outer surfaces of said heads or spiders 18. The fly bars 21, instead of being arranged in radial positions, as heretofore common, are arranged in pairs to form spaces 26, the sides of which converge outwardly. Inserted between adjacent fly bars of adjacent pairs, which form the spaces 26, are key plates 27 which are secured to the heads 18 and 19 by means of lag screws or other suitable means. Secured in the spaces 26 are blocks 28 of carborundum or other suitable abrading mate rial. lVith the described construction, the carborundum blocks 28 are, in effect, dovetailed to the surface of the beater rolls and firmly secured to the surface thereof without the use of other securing means, as for example, the usual tie bolts heretofore commonly used. Also, while my invention contemplates the use of any desired or approved form of means for adjustably supporting the bearings of the beater shafts 3 and 4, I prefer to use the form of bearing support shown in Figs. 1 and '2 of the drawings, and comprising the hollow upright posts or standards 7 and 8 secured in upright position at opposite sides of the beater vat or tank A. Slidably fitted to the bores of said posts or standards 7 and 8 are slides or ieads 30 formed on which are bosses 31 which project laterally through slots 32 formed in the upper ends of said bosses or standards. Projecting from the. lateral faces of the bosses 31 are studs 33, pivotally mounted on which are the bearing boxes 34: for the beater shafts, said bearing boxes being provided on their under sides with bosses 35, formed in which are suitable bearings to receive the studs 33. The heads or slides 30 are adapted to be adjusted vertiagainst rotation, the upper ends of which project above the tops of said posts or'standards, and threaded to which are nuts 38- formed on which are worm wheels 39. The under sides of said nuts bear against caps 40 secured to the upper ends of said posts or standards 7 and 8, said caps being provided with holes or openings through which the adjusting studs 37 extend. Both ends of the beater roll shafts are adapted to be adjusted simultaneously by means of worms &1 on worm shafts 41-2 which engage the worm wheels 39 on the nuts 38 threaded to the studs 37.

The beater rolls as well as the paddle wheel are preferably covered with suitable casings, as shown, and, in order to prevent the first beater roll from throwing the pulp upwardly against the casing, 1 provide a transverse deflector member 6 at the discharge side of the first beater roll, this member consisting of a board or plate inclining upwardly and rearwardly from the first beater roll, so that, should pulp be carried up by the rapid rotation of the beater roll, it will strike against the underside of this member 6 and be deflected downwardly toifi ard the intake side of the second beater ro beatereroll, I mount another splash or impact member 43 whose inner face inclines downwardly, so as to throw the pulp down into the vat. This member will be preferably stationarily mounted on the walls of the vat and in such position with respect to the discharge side of the second beater roll that a considerable portion of the pulp will be thrown against its inner face by the action of the rapidly rotating beater roll. The inner face of this splash member is provided with a surfacing 44 of carborundum or other gritty or cutting material or formation, whereby the forcible discharge of the pulp from the second beater roll will be utilized to further disintegrate the stock.

The beater rolls and paddle wheel are adapted to be driven by means of suitable connection with a source of power, not shown. As shown, the beater roll shafts are adapted to be driven from a back shaft 44 rotatably mounted in bearings on a suitable supporting frame by means of a belt 45 adjusted to driving pulleys 46 and 47 secured to rotate with said back shaft 44: and the front beater roll shaft 3, said beater roll shafts being connected so as to rotate together by a chain belt 48 adjusted to sprocket wheels 49 secured'to said beater roll shafts. As shown also, the paddle wheel 14 is also driven directly from the back shaft 44; by means of a chain belt 50 adjusted to sprocket wheels 51 and 52 secured to said back shaft and paddle wheel shaft, respectively. The relation is such that the beater roll shafts will be driven at relatively high speeds, say 250 R. P. M., and the paddle At the discharge side of the second.

wheel will be driven at a relatively slow speed, say 15 R. P. M.

As stated, it is important that the beater rolls and bed plates shall be so located that the rolls shall operate upon a comparatively thin layer of stock, the best thickness in practice having been found to be approximately from two to four inches, and, in order that this may be accomplished and at the same time provide the proper fall-away at the discharge side of the final beater roll, I have found it expedient to mount the bed plates approximately in the same horizontal plane with the normal level of the pulp mass in the vat. Thus positioning the bed plates requires that the paddle wheel or other lifting device shall continuously elevate a sufficient quantity of the stock to continuously feed to the beater rolls the thickness of layer of stock desired. This layer of stock, therefore, while it is being operated on by the beater rolls lies bodily above the normal level of the stock in the main part of the tank and will, therefore, be capable of quick discharge back into the tank at the discharge side of the beater rolls. This quick discharge of the stock back into the main mass of stock in the tank prevents any considerable quantity of stock being carried up by the beater roll and thus saves greatly in the power required to drive the final beater roll. Where two or more beater rolls are employed, as in the present machine, the stock will be prevented from being carried up by the first beater roll by the suction action of the second beater roll, so that with my construction the beater rolls may be operated efficiently with much less power than is the case with those beater rolls which perform the grinding action below the normal level of the stock in the vat. It will be observed also that when the beater rolls are arranged as in my apparatus, to operate upon a comparatively thin mass of stock that has been lifted above the normal level of the stock in the tank, it would be possible to increase the number of beater rolls more than the two illustrated and described, in view of the fact, as stated, that the second beater roll takes the stock quickly away from the pre ceding roll while at the discharge side of the final beater roll the stock may be quickly thrown away from the roll, so that no one of the beater rolls will carry up sufficient stock to cause either non-uniformity in grinding or increase the power required for rotating the rolls. In the drawing, Fig. 3, the normal level of the stock in the tank is indicated by the dotted line 09, while the level of the mass of stock that is lifted above the main mass in the tank is indicated by the dotted line y.

Having thus described my invention, what I claim is:

1. In a beating engine, the combination With the vat or tank, of a beater roll mounted above said tank or vat in such position that its lower side will extend only slightly below the designed level of the contents of the vat or tank, said roll comprising heads secured to rotate with the beater shaft provided with transverse peripheral slots, flybars secured in said slots, said fly-bars being arranged in pairs to form spaces the sides of which converge outwardly, blocks of abrasive material secured in said spaces, and key plates secured to said heads between adjacent fiy-bars of adjacent pairs so as to exert a wedging action thereon, a bed plate supported within said tank in operative relation to said heater roll, a paddle wheel rotatably mounted in said vat or tank at the front side of said beater roll and bed plate, means for rotating said beater roll and paddle wheel, and an upwardly and rearwardly inclined surface arranged between the under side of said paddle wheel and said bed plate, whereby the material which passes said paddle wheel will be guided between said beater roll and bed plate, substantially as described.

2. A beater roll for a beating engine, comprising heads secured to rotate with the beater shaft, provided with transverse peripheral slots, fly-bars secured in said slots, said fly-bars being arranged in pairs to form spaces, the sides :of which converge outwardly, blocks of abrasive material secured in said spaces, and key plates secured to said heads between adjacent fly-bars of adjacent pairs, so as to exert a wedging actionthereon, substantially as described.

3. In a beating engine, a vat, beating means operating therein, and means located at the receiving side of said beating means for disintegrating the stock as it is fed thereto, said disintegrating means consisting of a toothed rotary device.

4. In a beating engine, a vat, heating means operating therein, and means located at the receiving side of said heating means for disintegrating the stock as it is fed. thereto, said disintegrating means consisting of a toothed rotary device located close to and under the beater ,roll of the be'ating' mechanism.

5. In a beating engine, a vat, a plurality of bed plates mounted therein approximately in the same plane as the normal level of the stock in the tank, a pair of beater rolls arranged in tandem, one operating with each of said bed plates, means in front of the first beater roll for lifting continuously a layer of stock above the normal level of the stock and delivering it to the first beater roll, said first beater roll serving to beat the stock and then feed the raised up layer of stock directly to the receiving side of the second roll, the passage way between the two rolls being free and unob-' structed so that the pulp may be fed to the second roll without lifting the pulp, means being provided at the discharge side of said second beater roll and bed plate to permit quick discharge of the pulp down into the mass in the vat. Y a

6. In a beating engine, a vat, a bed plate supported within the vat approximately on a level with the normal level of the stock in the vat, a beater roll adapted to cooperate with said bed plate, means at the receiving side of said bed plate and beater roll to continuously raise a layerof stock above said normal level and deliver it to the beater roll and bed plate, means being provided at the discharge side of the beater roll and bed plate to permit quick discharge of the pulp away from the same, whereby the pulp will be discharged directly away from the beater roll in a forcible manner, said means embodying a downwardly inclined splash or impact board having an abrasive workingface and located directly in the line of dis charge, for the purpose set forth.

In testimony, that I claim the foregoing as my invention, I aflix my signature in presence of two subscribing. witnesses, this 24th day of March, A. D. 1914.

HENRY A. FRAMBACH. Witnesses:

ALEX D. KING, Jr., A. H. GUNcGoLL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). O.

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