Crushing-roll.

Application filed February 13,1900. Serial No. 5,053. (No model.)

To all wham it may concern:

Be it known that I, Max Condula, factory manager, a subject of the Emperor of AustriaHungary, residing at Budapest, tenth dis5 trict, Austria-Hungary, have invented a certain new and useful Crushing-Roll, of which the following is a specification.

This invention has reference to brushing and kneading rollers, such as are used in the io ceramic industries for the treatment of the clay used therein, and it is especially designed to obviate the difficulty of the rollers heretofore in use, which very often failed to catch hold of the clay fed to them, which defect was 15 partly due to the slippery condition of the clay and also to the accumulation of the material in the feeding-hopper when pieces of clay of a somewhat larger size were being used. This was a serious drawback in the 20 devices as used heretofore which very seriously detracted from the output of the machine and caused frequent stoppages and repairs, which increased working expenses considerably, the more as it became necessary to 25 have special help employed to remove the difficulties in feeding. All these manipulations, moreover, entailed great danger for the men working at the rollers, it being a frequent occurrence that the tools of the men used in the 30 feeding manipulation were caught by the rollers, dragging the incautious workmen along with them. All these difficulties are avoided by my invention, as set forth in this specification and pointed out in the claims, the an35 nexed drawings showing a preferred form of construction of a pair of rollers embodying my invention.

In the drawings, Figure 1 shows'the application to crushing-rollers provided with feed40 ing-knives. Fig. 2 is a sectional view of Fig.

on the line A B. Fig. 3 illustrates in horizontal longitudinal section a pair of smooth rollers, showing the attachment of the feeding-knives. Fig. 4 is a side view, Fig. 5 a 45 section, of undulatory rollers.

The rollers themselves are composed of several rings a b and cover-rings c d, connected with each other, the said rings a b being of a shape so as to form, one smooth uniform un50 dulatory surface when put together. As a result the clay which is placed between the rollers is fed continuously to the feedingknives, which cause it to be more securely and uniformly carried along by the rollers. The number of the rings a b employed varies 55 with the amount of work which the machine is expected to yield.

e represents specially-shaped feeding-knives attached to the rings a, while slots/are provided at the rings b. The feeding-knives pro- 60 ject over the surface of the rollers, and upon the rotation of the rollers they engage with the said slots/opposite thereto. The rings a, to which the feeding-knives e are attached, alternate with the rings b, having the slots/, 65 each' ring a, with its knife e, being opposite a ring δ, with slot /. The clay which is fed to the rollers is at once caught by the feedingknives e, which serve to comminute it and by which it is pressed against the opposite roller. 70 Hence the clay is continuously fed forward by the rollers, and the accumulation of material in the feeding-hopper becomes impossible.

This invention shows the further advan- 75 tage that the diameter of the rollers may be considerably less than that of the ordinary rollers without in any way interfering with the output of the device, a saving of labor being even accomplished thereby. The sizes 80 of the feeding-knives e and of the slots/are adjusted to suit the different materials under treatment.

It is obvious that this combination of rollers with feeding-knives can also be used to 85 produce a kneading action and that it may be applied to other material having plastic properties. I am aware that rollers having studs to register with recesses of the adjacent rollers are old and that it is old to use go inclined cutting-blades in connection with crushing-rolls; but these constructions were deficient, inasmuch as they failed to effect the cutting of the plastic material, which can only be effected by providing recesses for the 95 blades to enter without interfering with the contact of the roller-surface, as is done in my invention. I therefore do not claim, broadly, blades or projections in connection with rollers; but 100