US893385A - Clay press or mixer. - Google Patents

Description

CARL FRIEDRICH SCHLIGKEYSEN, OF STEGLITZ, NEAR BERLIN, GERMANY.

CLAY PRESS OR MIXER.

Specification of Letters Patent.

Patented July 14., 1908.

Application filed December 21, 1906. Serial No. 348,941.

To all whom it may concern:

Be it known that .I, CARL FRIEDRICH SOI-ILIOKEYsEN, a subject of the German Emperor, and resident of Steglitz, near Berlin, Germany, have invented certain new and useful Improvements in and Relating to Clay Presses or Mixers, of which the following is a specification.

This invention relates to improvements in clay presses or mixers designed for the pur ose of mixing or kneading segregated lumps of clay into a homogeneous and uniform mass thereby rendering the same suitable for use in the manufacture of bricks, tubes and other products formed of clay.

The device of this invention has to do with an improved character of machine of this type so constructed as to materially reduce wear of the parts and afford means whereby material treated may be'discharged in a condition suitable for use by a greatly reduced period of treatment and wherein a material reduction of motive power may be effected.

The invention will be more fully described in connection with the accompanying drawing and will be more particularly pointed out and ascertained in and by the appended claims.

In the drawing: Figure 1 is a vertical sectional view of one form of machine which embodies the main features of my invention. Fig. 2 is a sectional view of another form of the invention. Fig. 3 is a plan view of segments illustrating the different forms of rings which may be used. Fig. 4 is a sectional View of a portion of the body of the machine shown in Fig. 1 drawn on an enlarged scale.

Like numerals of reference designate similar parts throughout the different views of the drawing.

Considered generally the invention in cludes a body ortion in which is formed a passage throug which the clay is forced from an inlet to a point of discharge and a plurality of mixers or kneaders disposed in said passage and serving in the performance of their function of mixing and kneading the clay to advance the same from said inlet to the point of discharge. To this end the said kneaders or mixers are desirably given a helical or spiral formation in order to impart the requisite advancing movement but imparting such movement the kneaders also rotate the clay and the same is closely packed and compressed between the body portion and the kneaders and also between the spiral flights or blades of the kneaders resultin in-the subjection to these parts of a powerfu frictional contact thereby causing the same to quickly wear out. It has also been found that the clay packs so tightly that very powerful driving means is required. Now it is the object of this invention to improve machines of this character and obviate the foregoing defects by providing means for interrupting the rotary movement of the clay in its passage through the body portion and to so dispose and construct said means as to increase the mixing or kneading action by causing the kneaders to alternately cooperate with the body portion and said means to thus increase the efficiency of the machine, in its mixing action, and thereby enhance the quality of the clay mixture dis charged.

By interrupting the rotary movement of the clay the tendency of the same to pack and clog is overcomewhile the tortuous and irregular course through which the clay is forced causes a general shifting of the massed particles and uniform mixture which is highly desirable.

As shown, and referring more particularly to Fig. 1, the body portion is in the form of a cylinder 2, having a flaring inlet portion 1 and an outlet 3. The kneaders or mixers are shown as mounted upon a shaft 14 which is centrally disposed within the cylinder 2 and may be mounted in suitable bearings (not shown) and driven from any convenient source of power. The kneaders are indicated at '8, 9 and 10 and are preferably in the form of spirals which are spaced apart from each other a slight distance. The kneaders are so disposed and proportioned with respect to the cylinder 2 as to cooperate with the wall thereof in the operation of kneading and mixing the clay, i. e. the peripheries of the kneaders are sufficiently close to the wall of the cylinder so that the clay will engage the latter and will be mixed and kneaded by its contact with the kneaders and the wall of the cylinder.

In order to prevent a continuous rotary movement from being imparted to the clayv in its passage through the cylinder means are provided, preferably in the form of rings 4, 5, 6 and 7, which are disposed adjacent the spaces formed between said kneaders and which project outwardly from the wall of the cylinder 2 toward said kneaders in a manner to reduce the area of the passage through which the clay is forced. 'As the clay is forced downwardly between the kneaders and the wall of the cylinder it engages the rings and the kneaders thereupon cease to cooperate with the wall of the cylinder 2 and cooperate with the said rings in forcing the clay there-through and thus it will be seen that the kneaders act alternately, on a given portion of the clay, in cooperation with the wall of the cylinder 2 and said rings. Owing to the fact that the rings are interposed in the spaces formed betweenthe kneaders and as the same act downwardly upon the clay forcing the same against said rings the latter Serve to interrupt the rotary movement of the clay in its downwardly advancing movement. It will also be understood that inasmuch as the clay is given a uniform movement while it is passing between the rings and as the passage at such points affords a relatively greater area than at points adjacent the rings the clay will, when it reaches the rings, 'be forced there-through at a relatively increased speed with respect to its speed between said rings and this feature will materially increase the efficiency of the rings in interrupting or preventing rotary movement of the clay. When the clay has been compressed by said rings and has passed there-through it will immediately be permitted to expand into the relatively increased space below the rings and will be immediately engaged by the next kneader or mixer and advanced toward the point of discharge.

In order to further increase the capacity of the rings in preventing rotation of the clay the same may be provided on their inner margins with notches as indicated at 13 and arranged in parallel relation. of ring the clay in its passage is forced into said notches and the same not only serve to further retard the rotary movement but they also serve to shift the particles of massed clay and further increase the mixing efliciency of the machine.

In some embodiments of the machine designed for certain classes of work it may be desirable to bevel the rings in order that the compressive action due to the passage of the clay through said rings may be more gradual and to this end it has been found that the best results are obtained by beveling the rings so that the beveled portion faces toward the inlet and in a directionopposite to the course of the clay as clearly shown in Figs. 1 and 4. In cases where it is desirable to insure immediate engagement of the kneaders, located below the rings, with the clay assing there-through the rings may be beve ed on their lower sides in the manner shown in Fig. 2.

In the embodiment shown the inlet por- In this form tion 1 is provided with a kneader having spirals 11 and 12 in order to insure a uniform and constant supply to the machine and at the point of discharge the machine is con veniently provided with a spirally formed delivery member 15.

In the form shown in Fig.- 2 the cylinder 2 is horizontally disposed but in other respects this form of the machine is substantially the same structurally and in operation as the machine shown in Fig. 1.

I claim:

1. A clay press comprising in combination, a cylinder, a rotary shaft therefor, helicoidal kneaders carried by said shaft and spaced apart from each other, and rings secured to said cylinder adjacent the spaces formed by said kneaders, said rings belng notched adjacent said spaces and having upwardly inclined portions projecting above said spaces.

2. A clay press comprising in combination, a cylinder, a rotary shaft mounted in said cylinder, a plurality of helicoidal kneaders arranged on said shaft and spaced apart from each other, and rings secured to the inner wall of said cylinder adjacent the spaces formed by said kneader, said rings being beveled outwardly and upwardly.

3. A clay press comprising in combination, a cylinder, a rotary shaft mounted-in said cylinder, a plurality of helicoidal kneaders arranged on said shaft and spaced apart from each other, and rings secured to the inner wall of said cylinder and projecting into the spaces formed by said kneaders, said rings being beveled toward said cylinders in opposite directions.

4. A clay press or mixer comprising in whereby the rotary movement of the clay 1 may be interrupted.

5. A clay press or mixer comprising in combination, a body portion provided with a passage for the clay, a plurality of rotary kneaders adapted to engage the clay and ad S vance the same 1n said passage, said kneaders being spaced apart from each other, and rings detachably secured adjacent said spaces and projecting into the same whereby the passage in said body portion is restricted and the rotary movement imparted to the,

clay by said kneaders is interrupted.

6. A clay press or mixer com rising in combination, a body portion provi ed with a 1passage for the clay, a lurality of rotary neaders engaging the c ay and advancing the same in said passage, said kneaders being spaced apart from each other, and removable means located adjacent said spaces and pro jecting into the same thereby restricting the passage in said body portion and interru ting the rotary movement imparted to the c ay by said kneaders, said kneaders cooperating with the Wall of said body ortion and with said means in mixing the c ay.

In testimony whereof I have hereunto set my hand, in presence of tWo Witnesses.

CARL FRIEDRICH SCHLICKEYSEN Witnesses:

HENRY HAsPER, AUGUSTUS E. INGRAM.

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