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Publication numberUS691030 A
Publication typeGrant
Publication dateJan 14, 1902
Filing dateAug 31, 1901
Priority dateAug 31, 1901
Publication numberUS 691030 A, US 691030A, US-A-691030, US691030 A, US691030A
InventorsEugen Wernecke
Original AssigneeEugen Wernecke
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 691030 A
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Description  (OCR text may contain errors)

No. 69|,030. Patented Ian. I4, |902. E. WERNEGKE. FILTER PRESS.

(Application led Aug. 31, 1901.)

4 Sheets- Sheet (N0 Model.)

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No. 691,030. Patented lan. I4, |902.



(Application vled Aug. 31, 1901.) (No Model.) 4 Sheets-Sham 2.

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Patented lan. I4, |902. E. WEBNECKE.


(Application med Ang. 31, 1901.)

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(No Model.)

Won/vens Nu. 691,030. Patented lan. I4, |902.


FILTER PRESS. (Application filed Aug. 31, 1901.) (No Model.) 4 Sheets-Sheet 4.

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SPECIFICATION forming part of Letters Patent No. 691,030, dated January 14, 1902.

Application filed August 31,1901.

.T0 all whom, t may concern:

Be it known that I, EUGEN WERNECKE, a subject of the Emperor of Germany, residing at Gerstevvitz, near Weissenfels, Germany, have invented certain new and useful Improvements in Filter-Presses; and I do hercby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

My present inven tion refers to filter-presses, and more especially to a special construction and arrangement of such presses by which their Working is rendered automatic and continuous.

The invention consists in arranging a number of filtering-chambers in a circle around a hollow shaft, through Which the mixture is admitted that is to be filtered, and providing xed projections on the stationary parts of the machine, by means of Which the different functions necessary for the operation of the filtering-chambers are performedautomatic- `ally as the chambers are rotated around said shaft.

Of the accompanying drawings, Figures 1 and 2 are different vertical sections through my said machine. Fig. 3 is a detail view of the lid or cover of one of the ltering-chanibers, showing also the device by which it is closed `and opened. Fig. i is a vertical section through the said closing device. Fig. 5 is a view of the frame or stationary part of the machine, showing the different projections by means of which th'e different operations are performed. Figs. 6, 7, 8, and 9 are details of the arrangement. Fig. 10 is a side elevation of the standard shown in Fig. 5. Figs. 11 and 12 are details shown on an enlarged scale.

The same letters and numerals of reference are employed to indicate corresponding parts in all the figures.

S and S2 are tWo standards which form the stationary frame of the machine. A is a holloW shaft fixed at both ends in the said standards and likewise stationary. On this shaft is fitted, so as to turn easily on it, a sleeve B, forming the boss or center piece of a casing provided at its circumference with a number of chambers C C, closed by lids or covers D Serial No. 73,957. (No model.)

D. Each of these lids is provided with two .fianges D' DQ and between these flanges are fixed-a number of pins D2 D2, which engage With the teeth of a pinion P, fixed on a shaft P', that turns in bearings arranged at the top of the standards S S2. It will be seen that if proper means are provided for turning the shaft P with the pinion P the whole casing will be caused to rotate around the shaft A.

Every chamber Chas a cylindrical portion into which is fitted a piston-shaped piece E, provided with a rod e, by means of which it can be made to advance or recede, thus diminishing or increasing the free space Within the chambers C.

In Figs. 11 and 12 the inside arrangement of the filtering-chambers C is shown; but I Wish it to be understood that this arrangement is only described by Way of an example, as it Will be readily seen by every expert that the nature of my invention would not be in any Way affected if the filtering-chambers were differently arranged according to any one of the divers plans generally in use in presses of this kind.

In case the liquid resulting from the filtra tion is itself without value both the pistons E and the covers D may be grooved and perforated. Their surfaces are covered by a plate of perforated sheet-iron, Wire-gauze, or such like material F, and this again is covered by the filtering-cloth F. The liquid issuing from the perforations is allowed to spread out over the surfaces of the covers and is led off in any suitable Way. If it is important to collect the liquid, the piston only is provided With grooves and With. filtering material, as shown in Fig. 12. In this form a pipe F2 is connected with each filterchamber. The pipes F3 are secured to and rotate vwith the filter-frame, and said pipes extend radially of said frame toward the tubular support A. A receptacle F'l is arranged to receive from the free ends of said pipes F3 the liquid escaping from the lter-chambers O. The receptacle F4 is stationarily supported, and the pipes Fa are of such length as to revolve with the series of filter-chambers without interfering with either the support A or` said receptacle F1. Of course no liquid will bedelivered to either of the pipes F3 except IOO when its connected filter-chamber is in an elevated position.

At a a hole or opening is provided in the hollow shaft A, and corresponding thereto a number of studs b, equal to the number of chambers C, are fixed in the center piece B, so as to register with the hole a in certain positions of the rotating frame. Attached to the studs b are a corresponding number of pipes b', which connect them with openings in the sides of the chambers C, as shown in Fig. 2.

On the standards S and S2 are fixed a number of projections, of which e and e2 (see Figs. 5 and l0) serve to move the pistonsE up and down in the cylindrical parts of the chambers C. This is effected by means of the crossbars g, fixed to the rear ends of the piston-rods e and provided with a small rollerat each end adapted to engage with said projections. The other projections f, j", f2, and f3 are adapted to perform the function of opening and closing the covers D. For this purpose projections C are provided on each side of the covers D, (see Figs. 2, 3, and 4,) and in these projections bolts 2 are loosely fitted, which are threaded with right and left screwthreads. The bolts 2 are provided with heads 6, the shape of which is seen in Fig. 3. Every head 6 carries a fixed pin 7 and a yielding pin 8. These latter serve to provide a certain amount of frictional resistance to the turning motion of the heads 6, so as to prevent unintentional movements during the operation of the machine. At both eXtreme ends of the motion of the head 6 a small excavation is made in the surface of the projection C', into which the pin 8 enters, thus fixing the head 6 in that position until a sufficient force is brought into play to cause pin 8 to yield, and thus to allow head 6 to be turned. On the upper right-hand screw-threaded portion of the bolt 2 a nut 3 is fitted,the shape of which is also shown in Fig. 3. This nut is also provided with a yielding pin -and a rigid pin 4. The action of this arrangement is as follows: When one of the filtering-chambers C has reached the position marked I in Fig. Las will be seen from the drawings,the cover D is open and is held in that position for the time being by the force of gravity. As the casing supporting series of filter-chambers rotates in the direction indicated by the arrows in Fig. 1 the rollers at the ends of the crossbars g strike the projections or cams e and by sliding along them project the piston E toward the outer end of the chamber C, and thereby push out the cake of solid matter that has been formed by the filtering process. As soon as the cross-bars g leave the rear ends of the cams e they reach the fore ends of cams e2 and by sliding along their surface are made to retract the pistons E into their initial position. At the same time the lid D has been gradually closed by its own Weight,and it only remains to screw it down Iirmly,so as to make chamber C ready for receiving a fresh charge parts immediately before they strike the respective projection f and the upper diagram illustrating their position immediately after they have left the projection f. The first operation is shown in Fig. 6. As the chamber C rotates, the fixed pin 7 in the head 6 strikes the projection f. The head 6 is thereby rocked to the position shown in the upper diagram of Fig. 6,and the bolt 2,being rigidly connected thereto, follows its motion, thereby slightly loosening the nut 3, which,being held in position by the yielding pin 5,cannot participate in the rocking motion. This loosening or retracting of the nut 3 is necessary in order to allow it to freely swing into a position in which it overlaps the cover D, so as to lock it to the edge of chamber C. This operation is the next to be performed. Referring to Fig. 7, it will be seen that now the fixed pin 4 in nut 3 strikes the projection f', as indicated in the lower diagram, and that thereby the nut 3 Will be rocked into the position shown in the upper diagram, in which it slightly overlaps the edge of the cover D. By this motion it is also lowered,since the bolt 2 is not free to participate in its motion; but as this bolt has previously been rocked in the same direction, the screw-threads being opposed, no actual tightening down of the lid D as yet takes place. In order that this can be eifected, the head 6 must be returned into its initial position, and this function is now performed by the projection f2, which is struck by the outer surface of the head 6 as the rotation of C proceeds. I preferably construct the projection-f2 in the form of a small roller fixed on the end of a spring, as shown in Figs. 5 and 8, because the tightening of the bolt 2 ought to be stopped as soon as a sufficient locking action is obtained, and therefore if the projection f2 were rigid like the others either the screw would not be drawn down to a sufficient tightness or else a breakage would result. Now the chamber C is ready to receive a fresh charge. It has in the meantime reached the position marked V in Fig. l, and in this position the corresponding stud b registers with the opening a in the shaft A. The interior of the shaft A is supposed to be connected to a conduit (not shown) by which the liquid to be filtered is admitted under suitable pressure. While the rotation proceeds from position V to position VI the filtering process takes place, and when the chamber C has returned to position I it is ready to be emptied. This phase of the operation is shown in the lower diagram of Fig. 9. As will be seen, the surface of nut 3 strikes the projection f3 and is thereby swung back into the initial position shown in the upper IOO IIO

eenoee diagram, in which it leaves the cover D free to yield to the force of gravity and to open, whereupon the same play is repeated.

In the drawings I have shown the machine to consist of eight ltering-chambers; but it will be understood that any other number might be employed without affecting the nature 0f myinvention. Likewise if the output of the machine is to be increased it will be understood that this can be done by extending the length of the shaft A and correspondingly dimensioning the chambers C. If one opening a is not found sufiicient,any number might be employed, and it is also evidently possible to extend the diameter of the opening a in a circumferential direction, so as to increase the time in which the filteringprocess takes place as each chamber C passes through the operative phase.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that-what I claim isfl. In a filter-press the combination with a stationary frame of a hollow shaft adapted to admit the liquid that is to be filtered, a system of filtering-chambers arranged in a circle around said shaft and provided with pistons and hinged covers and of means for locking said covers, admitting a charge of liquid to each of said chambers, reopening the covers, advancing and reti-acting the pistons and relooking the covers such means being adapted to be automatically operated by rotating the said system of chambers around the said shaft, substantiallyas and for the purpose de# scribed.

.2. In a filtering-press the combination with a stationary frame having a number of projections or cams attached thereto of a hollow shaft adapted to admit the liquid to be filtered, a system of ltering-chambers arranged in a circle and adapted to rotate around said shaft, said chambers being provided with hinged lids and radially-movable pistons and of means for advancing and retractin g said pistons and for locking and unlocking said lids or covers, such means being adapted to engage with said projections or stationary cams and to be operated thereby when the system of chambers is rotated around said shaft substantially as and for the purpose set forth.

3. In an automatically-operated filteringpress the combination with a stationary frame provided with a number of projections or cams of a system of filtering-chambers arranged in a circle and adapted to rotate around a hollow shaft admitting the liquid to be treated, said shaft being provided with an opening in its circumference and of ducts communicating with the said chambers and registering with said opening in a predetermined position of every chamber, substantially as and for the purpose described.

4c. In a filtering-press the combination with a stationary frame of a hollow shaft adapted to admit the liquid to be treated a system of filtering-chambers arranged in a circle and adapted to rotate around said shaft of means for rotating said system of chambers around said shaft and of other means for charging operating and discharging said chambers such means being-,adapted to be automatically actuated by the rotation of said system of chambers, substantially as and for the purpose described.

5. In a filtering-press the combination with a stationary frame, a hollow shaft adapted to admit the liquid to be treated, an opening in said shaft, a system of filtering-chambers arranged in a circle and adapted to rotate around said shaft, means for rotating said system of chambers and ducts communicating with their interior and in certain positions of the said chambers registering with said opening in said shaft, of a suitable number of stationary cams or projections attached to said frame and of means for charging, operating and dis-g charging said chambers such means being adapted to engage with said cams and to be operated thereby, substantially as and for the purpose set forth.

In witness whereof I have hereunto set my hand in presence of two witnesses.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5798039 *Feb 7, 1997Aug 25, 1998Wiesemann; Fred E.Drum filter system with removable filter elements and a pawl rotation mechanism
Cooperative ClassificationB01D33/19