US1068096A - Grinding or reducing apparatus. - Google Patents

Description

E. BARTHELMESS.

GRINDING 0R REDUCING APPARATUS.

APPLICATION FILED AUG. 16, 1911. 1,068,096. Patented July 22, 1913.

3 SHEETS$HBET 1.

E. BARTHELMESS.

GRINDING OR REDUCING APPARATUS.

APPLICATION FILED AUG.16, 1911.

mswga, Patented July 22, 1913.

3 SHEETSSHEET 2.

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EMIL BARTHELMESS, OF NEUSS, GERMANY.

GRINDING OB REDUCING APPARATUS.

Specification of Letters Patent.

Patented J nly 22, 1913.

Application filed August 16, 1911. Serial No. 644,310.

To all to/mm it may come/a Be it known that l', than; Banrri-irmnrss, a subject of the tierman Emperor, and residing at Neuss, lthenish Prussia, in the German Empire, have invented certain new and useful improvements in Grinding or Reducing Apparatus, of which the following is a specification.

My invention relates to imprm eme1'1ts in grinding or reducing apparatus, and more particularly to grinding apparatus of that class in which the material to be reduced is crushed between a revolving reducing ring and one or more reducing rollers.

The reason for the rapid wear of the bearings of the reducing rollers resides in the fact, that the material passed between the reducing roller and ring tends to force the reducing roller in various directions. While for this reason a certain resiliency away from the reducing ring has been in'iparted to the rollers by supporting their bearings on springs, l have found, that such resiliency is not by any means sullicient. hilore particularly I have found, that the roller has the tendency to oscillate with its longitudinal axis about its center, which oscillations are not possible in the machines now in use.

An important feature of my invention consists in so mounting the roller that it can freely oscillate, and for this purpose the bearings provided at both sides of the roller instead of being guided between rigid guide ways or on rigid rocking lovers are mounted exclusively on yielding members such as springs. I11 the preferred form of the invention a set of springs are provided at each side of the roller, and the said springs are arranged at an angle to each other, so that the resultant of the forces exerted thereby holds the roller in engagement with the surface of the reducing rings. As the roller is thus held by a plurality of yielding memhere or springs, rigid supports or guiding means are not required, so that the bearings are not subject to wear. Urdinarily a plurality of reducing rollers is provided in a machine of this class, and in such cases I prefer to mount both rollers at both sides on a system of springs which consists of a spring connecting the bearings of both rollers and two springs one for each of the rollers which are arranged at an angle to the said connecting sprin My invention also relates to means for regulating the pressure exerted by the springs on the rollers. And in this respect my invention consists in providing independent regulating means for the springs located. at opposite sides of the rollers, and in addition means for simultaneously regulating the tension of the systems of springs located at opposite sides of the rollers.

In order that my invention be more clearly understood a machine embodying the same has been shown in the accompanying drawings, in which the same letters of reference have been used in all the views to indicate corresponding parts.

In said drawin 's-Figure l, is a side view of the machine, Fig. 2 is a view of the machine seen from the right of Fig. 1, with the belt pulley in section, parts being broken away, and Fig. 3 is a top plan view of Fig. l partly in section.

Referring to the machine illustrated in the drawiiws, the machine comprises a drum or casing (it of substantially cylindrical form which is mounted on a foundation or other suitable support. At its top the casing is closed in a dust proof manner by means of a hood B, and at its lower end it is equipped with a hopper T. The casing G is equipped with a chamber S for supplying thereto the material to be ground, and the said chamber is formed with two branches connecting respectively to opposite sides of the casing. At both sides of the casing stationary bean ings L L are located which are made in two sections, the lower one of which forms a part of the casing G. In the said bearings a shaft A mounted which carries a driving roller W and a belt pulley ll. The roller is in driving engagement with a crushing or reducing ring M which is mounted for revolution within the casing G and is spaced from the walls of the latter by means of rings Y located at both sides of the casing. Inside the crushing ring two crushing rollers W and W are located which are respectively keyed to shafts A and A supported in suitable bearings L and If. The latter are resiliently supported by coiled springs F F and F for which purpose they are formed with lugs V V and V, V". As shown the spring F is located between the bearings L and L and. the spring F bears on a lug X of the casing G by means of a rod 26' provided at its upper end with a head and a washer U. Pit its lower end the rod passes through a bore of the lug X and it is held in place by means of nuts K. Through the coiled spring F there extends a rod Z which at its upper end is provided with a head and a washer U and at its lower end is jointed to an arm (Z of a bell crank lever 71 pivotally mounted on the casing G at The second arm of the said bell crank lever is engaged by a cam c which is keyed to a shaft '10 mounted in a suitable sleeve H cast integral with the casing G. At the opposite side of the casing a similar system of springs is provided which are in the same way connected to a cam e keyed to the shaft 10. The shaft to can be rotated by means of a worm gearing g and a hand wheel L, and .when thus rotating the shaft the tension of the springs located at opposite sides of the casing G is simultaneously adjusted. The system of springs located at opposite sides of the casing can be independently adjusted by means of the nuts K.

As shown in the drawings, the crushing ring is formed with a concave inner surface, and the rollers are formed with correspond ing convex surfaces.

The material to be pulverized is supplied to the crushing apparatus at opposite sides of the casing G through the chamber which has two branches E. Within the chamber S a funnel t is located which is formed with two outlet conduits one for each of the branches E. Below the said conduits two chutes 1', a" are located which are pivotally mounted within the chamber S at T At their inner ends the said chutes are engaged by the head a of a setting screw 8 projecting downward through the wall of the chamber S. By means of a hand wheel is the said screw can be vertically adjusted, and by such adjustment the chutes r are set in a more or less inclined position, so as to admit a larger or less amount of the material to be ground to the crushing ring. From the chamber S the material flows downward to the crushing apparatus through the branches E provided at opposite sides of the case G.

To permit the rollers to be easily removed from or put into the machine the casing G is provided with four openings the size of which corresponds to the diameter of the rollers and which are normally closed by covers D and D.

I claim herein as my invention:

1. In an apparatus of the class described, the combination with a reducing ring, and means to rotate the same, of a plurality of reducing rollers, means to hold said rollers in contact with the ring, said means comprising a spring provided between adjacent reducing rollers and connecting the same with each other and springs respectively connected to said rollers and arranged at an angle to said spring connecting adjacent rollers with each other.

2. in an apparatus of the class described, the combination with a reducing ring, a driving roller engaging said ring, fixed bearings for said driving roller, and means to rotate said driving roller, of a plurality of reducing rollers, means to hold said rollers in contact with the ring, said holding means comprising a yielding member provided between adjacent reducing rollers and connecting the same with each other and yielding members respectively connected to said rollers and arranged at an angle to said member connecting adjacent rollers with each other.

3. In an apparatus of the class described, the combination with a reducing ring, a driving roller engaging said ring, fixed bearings for said driving roller, and means to rotate said driving roller, of a plurality of reducing rollers, means to hold said rollers in contact with the ring, said holding means comprising a spring provided between adjacent reducing rollers and connecting the same with each other and springs respectively connected to said rollers and arranged at an angle to said spring connecting adj acent rollers with each other.

4. In an apparatus of the class described, the combination with a reducing ring, a driving roller engaging said ring, fixed bearings for said driving roller, and means to rotate said driving roller, of two reducing rollers, means to hold said rollers in contact with the ring, said holding means comprising a spring connecting said rollers with each other and two springs respectively connected to said rollers and arranged at an angle to said spring connecting the rollers with each other.

5. In an apparatus of the class described, the combination with a reducing rin and means to rotate the same, of at least one reducing roller, and means provided at each side of the roller and independent of each other to hold the roller in engagement with the ring, said means comprisingat each side of the roller a plurality of springs arranged at an angle to each other, and means inde pendent of each other to adjust the force exerted by one of said springs provided at opposite sides of the reducing roller.

6. In an apparatus of the class described, the combination with a reducing ring, and means to rotate the same, of at least one reducing roller, and means provided at each side of the roller and independent of each other to hold the roller in engagement with the ring, said means comprising at each side of the roller a plurality of yielding members arranged at an angle to each other, and means common to both holding means provided at each side ofthe reducing roller to adjust the force exerted by said yielding members on each side of the roller on the reducing roller.

7. In an apparatus of the class described, the combination with a reducing ring, and means to rotate the same, of at least one reducing roller, and means provided at each side of the roller and independent of each other to hold the roller in engagement with the ring, said means comprising at each side of the roller a plurality of springs arranged at an angle to each other, and means conimon to both holding means provided at each side of the reducing roller to simultaneously adjust the tension oi said springs at each side of the reducing roller.

8. In an apparatus of the class described, the combination with a reducing ring, and means to rotate the same, of two reducing rollers, means provided at each side of said reducing rollers to hold the reducing rollers in contact with the ring, said means comprising at each side of the rollers a spring connecting said rollers with each other and two springs respectively connected to said rollers and to a relatively fixed part and arranged at an angle to the spring connecting the rollers with each other, and means common to both holding means provided at each side of the reducing rollers to simultaneously adjust the tension of said springs at each side of the reducing rollers.

9. In an apparatus of the class described, the combination with a reducing ring, a driving roller engaging said ring, and means to rotate said driving roller, of at least one reducing roller, and means provided at each side of the roller and independent. of each other to hold the roller in engagement with the ring, said means comprising at each side of the roller a plurality of springs arranged at an angle to each other, and means common to both holding means provided. at each side of the reducing roller to sinniltaneously adjust the tension of said springs at each side of the reducing roller.

10. In an apparatus of the class described, the combination with a reducing ring, a driving roller engaging said ring, and means to rotate said driving roller, of two reducing rollers, means provided at each side of said reducing rollers to hold the reducing rollers in contact with the ring, said means comprising at each side of the rollers a spring connecting said rollers with each other and two springs respectively connected to said rollers and to a relatively fixed part and arranged at an angle to the spring connecting the rollers with each other, and means common to both holding means provided at each side of the reducing rollers to simultanconsly adjust the tension of said springs at each side of the reducing rollers.

In testimony whereof I affix my signature in presence of two witnesses.

EMIL BARTHELMESS. [Ls] lVitnesses CHAS. J. men'r,

L. Norma.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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