US977718A - Ball-grinding machine. - Google Patents

Description

B. EITNER. BALL GRINDING MACHINE. APPLIOATIQN FILED AUG. a1, 1909.-

irai) strains ATENT FFICE.

BERTHOLD EITNER, 0F BERLIN,1GEIRMANY;

BALL-Gambino MACHINE.

Specification of Letters Patent.

Lo all whom it may concern: l lle it known that LBEn'rHoLD Ermua,

work-master, a subject'of the King of Pros-f' sia, residingat No. 14 Gotzkowskystrasse,

Berlin, in the Kingdom of Prussia, Geriv Iii-any, have invented certain new and useful Improvements in and Relating to Ballhorizontal plane and in combination with the grooved metal plate which is fixed beneath the rotating emery platea device for removing and mixing the balls is connected with its edge.- This device is fitted to the metal plate in such a manner thatwfor the purpose of removing: and returning the balls to be mixed an extension of the grooved paths is provided in the horizontal plate with annular `grooves, this extension pro cee'diug in curves outward vto a mixing chamber and then being again curved inward so that the/balls issuing from one grooved patlr are always able to enter another gi'ooved path.

-In the accompanying drawing, Figures 1, 2 and 3, illustrate the novel arrangement of the grinding plates and the means for de- He'cting and mixing the balls on a ball i `grinding machine of known construction.

Obviously the cinploymentyof the novel arrangement of the grinding plates to which the' invention mainly relates is in no way confined to the construction illustrated and its details such as the method of driving, etc., but can be usedfor all kinds ot' dry grinding machines whatever the construction of their framework, and the method of driving them may be.

As shown inlthe drawing (Fig. 1l the grinding plates u and b are superposed and arrangedA to operate in a horizontal plane, the emery plate u forming the upper rotating plate, while the grooved metal plate is the lower plate which isy fixed to the frame or table of the machine. liateially 011 the outer edge otthis fixed metal plate Z) the device is provided .for removing the balls the balls to change their relative position and their groove paths. {Fl-ie removal of the balls from the groove metal plate b takes place, owing to the fact, that the annular grooves in this plate are recessed at the place at which the'device c it fitted, and that curved paths al (in the form of closed tubes or passages) are located Yin this recess and connect on the one hand with the outlets from the groove paths, and on the other hand open into the'mixingreservoir or chamber m. For the purpose of reconducting the balls similar curved paths g are provided connecting on the other side with the grooves in the annular plate and, ruiming over the detlec'ting curves d, extend into the mixing chamber m. Owing to this guidance of the balls in 'these curves forming the continuation of .the grooved paths in the metal plate outward to the mixing chamber and from this in a curve inward back to the plate, the certainty is attained that the balls leaving one groove path will always enter another. groove path. Experience has shown that by this means the output ot the machine is increased, and the balls tolerance.V

What I claim as my invention and desire to secure by Letters Patent is:

1. A ball grinding machine comprising ball grindingplates operating in a horizontal plane, means fer operatin one of said plates, grooves in one of said p ates and ball detlecting, mixing and returning means op eriat-ing in conjunction with said grooved p ate. m

2. A ball grinding machine comprising an emery ball grinding plate, rotating in ahorizontal plane, a cooperating stationary emery plate, and balldetlecting, mixing and returning means operating in conjunction with said stationary grooved plate. Y

3. A ball grinding machine comprising ball grinding plates operating in a horizontal plane, means for operating one of said plates, grooves in one of said plates, a

grooves in said ball deflecting member being continuous with the grooves in said plate, ball mixing means and ball returning means including a further grooved ball deflecting are giound exactly to the cxtreme limit ot'4 grooved plate, means adapted to operate said i grooved ball detlecting member acting'ir conjunction with said groove@` plate, -thej- Patented Dec. 6, 1.910.

t `ftr'oni time to time from the. horizontal plate li and returning them to itin order to cause member the grooves of 'which are also contnuous with said grooved plate.

4. A ball grindin machlne comprising a rotatable elnery bal grinding plate, a, stationary grooved ball grinding plate, means adapted to operatel said emery plate to rotate in :L horizontal plane, a grooved ball4 delecting member acting in conjunction with said grooved pleite, the grooves in said defiecting member being continuous with the grooyes in said plate, ball mixing means and ball returning means including a grooved ball delecting member the grooves of which are also continuous with Said grooved plate.

In Witness whereof, I have hereunto signed 15 my name in the presence of two subscribing witnesses.

BERTHOLD EITNER.

Witnesses:

ROBERT MICHELSKI, lVOLDEMAR HAUPT.

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