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Publication numberUS622712 A
Publication typeGrant
Publication dateApr 11, 1899
Filing dateFeb 18, 1897
Publication numberUS 622712 A, US 622712A, US-A-622712, US622712 A, US622712A
InventorsLudwig Rissmttller
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 622712 A
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Description  (OCR text may contain errors)

No. 622,7l2. Patented Apr. ll, I899 L. RISSMULLER.


(Application filed. FIB. 1B, 1897.)

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SPECIFICATION forming part of Letters Patent No. 622,712, dated April 11, 1899.

Application filed February 18,1897. Serial No. 624,018. (No model.)

To all who??? it may concern:

Be it known that I, LUDWIG RISSMULLER, a citizen of Prussia, and a resident of Newark,

in the county of Essex and State of New J orsey, have invented certain new and useful Improvements in Centrifugal Separators, of which the following is a full, true, and accurate description, reference being had to the accompanying drawings.

The objects of my invention are, first, to provide a centrifugal separator with a bowl divided horizontally toform separable sections and with connections for operatingthe bowl and separating the sections thereof, whereby therotary movementsof the bowl are used when the sections are not separated for the separation of the lighter ingredients from a mixture treated therein and also upon the separation of the sections for the expulsion of the remaining bodies; second, to provide a centrifugal separator which may be continuously rotated during the operations of supplying the mixture to the bowl, the separation of the substances, and the expulsion of the remaining ingredients, whereby successive portions'of the mixture may be treated without the necessity of stopping the machine, while the number of operating parts is diminished and a great economy in cost of the apparatus and of the treatment of substances is effected.

In the accompanying drawings, Figure 1- shows a longitudinal sectional view of one form of separator embodying my invention, and Fig. 2 shows an outside view of'a drier which embodies my invention.

The bowl of a centrifugal separator made under my invention consists of a lower section having no longitudinal movements and an uppersection attached to the upper end of a longitudinally-movable shaft, by the movement of which the upper bowl-section maybelifted or lowered, as desired, and when lifted the rotary movements of the bowl are used for the expulsion of the heavier substances through the space between the separated sections.

While many forms of apparatus having the features above stated may readily suggest themselves to persons skilled in the manufacture and use of centrifugal separators, I prefer to use substantially the form of apparatus shown in the drawings accompanying and herein described.

In the accompanying drawings, the bowl of the centrifugal separator is divided horizontally to form two conical rings. The lower half A is provided at its upper edge with an 4 H H are arms connecting the sleeve Grand V upper half 13.

I is a nut for securing sleeve Gin position.

J is an outwardly and upwardly extending flange upon the upper end of sleeve D. To this flange the lower half A of theshell is firmly secured.

K is is a longitudinal slot through the sleeve D near its lower end.

L is a pin fitted in the slot K. It also serves to mechanically engage the shaft and sleeve together, whereby the upper and lower sec: tions A and B of the bowl are driven in unison. The said pin L is also fitted into a collar M, which surrounds the sleeve D. A peripheral groove is cut entirely around said collar, and a ring N is fitted in said groove. A pin 0, extending from the outer edge of said ring, loosely fits into a slot P in a lever Q. By the arrangement just described the shaft 0, sleeve D, and collar M are operated together, while the ring N is held against rotary motion by the pin 0. a

R is the pivot of the lever, and S its handle.

U is the driving-pulley secured to sleeve D. l

. bage, &c., described and claimed in Letters Patent of the United States No. 611,580, dated September 27, 18.98.

The lever Q is lowered, bringing the two sections A and B of the bowl tightly together at the flanges a and b. A fluid mixture thoroughly boiled, containing acids, garbage, and the greases in the form of an emulsion, is fed into the bowl, which may be then rotating or may be afterward started. The centrifugal force separates the mixture into three bodies according to their specific gravities: first, a circular wall or ring of grease nearest the center of the bowl 5 second, a circular wall or ring of acid solution containing acids, water, and substances dissolved by the acids out of the garbage, and, third, a circular wall or ring of the heavier ingredients lying against the pe ripheral inner walls of the bowl. The greases are spun out through the pipe V and collected in any desired manner, and when all the greases have been removed the lever is lifted and the sections A and B of the bowl are separated by lifting the upper section, as shown by dotted lines, through the ring N, collar M, pin L, (sliding in slot K,) and shaft 0.

Upon the separation of the sections the heavier ingredients and acid solution are thrown violently out of the bowl by the continued centrifugal action and are collected in any desired way. The sections are then brought together, as before, and another mixture is fed into the bowl. Thus the'operations of feeding the mixture into the bowl, separating the greases therefrom, and expelling the heavier ingredients are carried on without stopping or retarding the rotary movements of the bowl, dispensing with the necessity for employing devices for such purpose, and greatly hastening the treatment of mixtures.

. I wish it to be understood, however, that the separator of Fig. 1 may be used for the treatment of other substances than garbage. In the separator shown in Fig. 2'the pipe V is not used. A large number of perforations W are formed in the bowl, (in one or both sections, as preferred.) The wet sugar (or other substance) is filled into the bowl, and the fluid substances, syrups, &c., are expelled by centrifugal force through the perforations WV. WVhen the sugar has been sufficiently dried, the sections A B are'separated and the dried product violently expelled through the space between the flanges a and b. The sections are then brought together and another batch is treated.

The separator shown in Fig. 2 may be used with advantage for drying crystallized soda, Epsom salts, (to.

In my apparatus the movement of the upper bowl-section is positively controlled, and it may be lifted to any extent desire d,whereby the heavier substances, no matter how large, may be discharged without danger of clogging. This is especially advantageous in treating garbage for the removal of greases or other ingredients therefrom,the mass sometimes containing large articles, such as portions of bottles, pieces of wood, small stones, &c., which would not be expelled from the bowl unless means are provided for lifting the upper bowl-section to any extent desired.

I desire to also call attention to the fact that the connections for driving the bowl and the connections for lifting the upper bowlsection are all below the discharge-opening formed by lifting the upper section. The especial advantages resulting therefrom are that the filling apparatus and connections may be placed directly above the bowl, and the material to be treated can be discharged directly into the bowl without being interfered with by shafting, pulleys, or supports, and there are no shafts, rods, or other devices to interfere with the free discharge of the ingredients from the bowl.

While I have herein particularly shown and described one embodiment of my invention, yet I desire it to be understood that other embodiments thereof may be constructed by persons skilled in the art and yet be within the scope of my claims.

It is an especial advantage in the operation of my centrifugal separator that the mechanism for opening the bowl is very simple and is located wholly below both bowl-sections, so that it is not in the way of a free ejection of the contents when the bowl-sections are separated; also that the operator does not have to lift the'weight of the material which is be ing treated when the bowl-sections are to be separated, this weight resting upon the lower bowl-section, which does not have any longitudinal movement. Both these features are exceedingly important when large masses and weights are being operated upon,- as in the case of garbage treatment on a' large scale,- for which my separator is especially designed. I am aware of United States patents of Proeber, dated January 3, 1893, No. 489,166, of Roettger, dated March 31,1885,No. 314:,880, and of Long, dated January 17, 1882, No. 252,483, and especially disclaim the features of construction described and claimedin said patents.

WVhat I claim is- 1. In a separable-bowl centrifugal separator, a lower bowl-section secured to the upper end of a vertical sleeve, an upper bowlsection secured to the upper end of a longitudinally-movable shaft, the sleeve being provided with a longitudinal slot and the shaft provided with a pin projecting outwardly therefrom and through the said slot, a longitudinally-movable collar surrounding the sleeve and engaging said pin, and a lever for raising and lowering said collar and the upper bowl-section, substantially as and for the purpose described.

2. In a separable-bowl centrifugal separator, a lower bowl-section secured to the upper end of a vertical sleeve; an upper bowlsection secured to the upper end of a downwardly-extending and longitudinally-movable shaft, the shaft arranged to have longitudinal movement throughthe sleeve; a collar loosely secured upon the shaft below the bowl-sections; and a lever for ,raising and lowering said collar and the upper bowl-section, substantially as and for the purpose described.

3. In a separable-bowl centrifugal separator, a lower bowl-section; an upper bowl-section secured to the upper end of a downwardly extending and longitudinally-movable shaft; a collar loosely secured upon the shaft below the bowl-sections and a lever for raising and lowering said collar and the upper bowl-section, substantially as and for the purpose described.

4. In a separable-bowl centrifugal separa tor, a lower bowl-section an upper bowl-section secured to a shaft extending downwardly through the lower bowl-section, and arranged to have longitudinal movements 5 in combination with a collar loosely secured upon the shaft below both bowl-sections, and a lever for raising and lowering said collar and the upper bowl-section, substantially as and for the purpose described.

5. In a separable-bowl centrifugal separator, a lower bowl-section; an upper bowl-section secured to a downwardly-extending and longitudinally-movable shaft; and operating connections engaging with the shaft at a point below both bowl-sections for raising and lowering the shaft, substantially as and for the purpose described.

Inwitness whereof I have hereunto signed my name this 4th day of February, 1897. V


In presence of- 'lnno. H. McOALLA, EDWARD J. LYNCH.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2688437 *Nov 30, 1948Sep 7, 1954Saint GobainCentrifugal separator
US3190547 *Jul 29, 1963Jun 22, 1965David L ChildsMethod and apparatus for centrifugally fractionating liquid mixtures
US3765600 *Mar 8, 1972Oct 16, 1973Steimel RCentrifuge
US5441475 *Jun 23, 1994Aug 15, 1995Haahjem North America, Inc.Centrifugal separator with axially separable bowl elements
US5484383 *Nov 28, 1994Jan 16, 1996Bardyne, Inc.Orbital separator for separating more dense and less dense components of a mixture having a controllable discharge passageway
US6068587 *Aug 31, 1999May 30, 2000Huang; Min-YenCentrifugal separator for separating solids and liquids in a slurry
US6398706 *Feb 14, 2001Jun 4, 2002Min-Yen HuangCentrifugal mud separator
DE19538529A1 *Oct 6, 1995Apr 10, 1997Inst Bioprozess AnalysenmesstLaboratory rotating separator assembly
Cooperative ClassificationB04B1/14