USRE12507E - Blanche fleming - Google Patents

Description

REISSUED JULY 17, 1906.

J. H. FLEMING, DBG D. B.- FLEMING, ADMINISTIFATRIX. OBNTRIFUGAL CREAM SBPARATOR.

APPLIUATION FILED. JUNEIG, 1806.

' Invenlor: lm?

i No. 12,507.

UNITED STATES PATENT QFEICE JAMES H. FLEMING, OF NEWARK, NEW

ADMINISTRATRIX OF SAID JAMES JERSEY; BLANcnE FLEMING H. FLEMING, DECEASED.

7 CENTRIFI'UGAL,CREAM-SEPARATORL Specification of Reissued Letters Patent.

R ss es Jul 17,1906.

Original No. 301,069, dated October 3, N65.- Application for reissue filed June 18, 1906.. Serial No. 322,098.

T at wlwml it WZ/CLZ/ concern:

Be it known that I, 'JAMEs H; FLEMING, a

citizen of the United States, residing at N ew-' V ark, m the county of Essex and State of'New Jersey, have invented certain new and useful Im rov'ements in GreamSeparators; and I do iereby declare the following to be a full,

clear, and exact description of the invention,

such as will enable others skilledin the art to which it appertains to make and use the same. My invention relates to improvements in centrifugal orea1n-separators, and particularly= to means for preventing flushing therein-'i. e., the rejection of the entering milkfrom the feed-tube due to the formation offoam; Y

My invention i particularly intended to be applied to centrifugal cream-separators of the type comprising Within the revolving bowl usual in such machines acentral feed= tube discharging milk at its bottom only and arranged to impartrapidrotary motion to the milk so discharged and t eeliverit int-e the main portion of said bowl at points near the walls thereof; but my invention is not limited'to any particular construction of such typeof cream=separator' nor to'its use in con Debi/101i with type of 'erea1n=separator Heretofore trouble has been. experienced foam which. is suf lnthe operation of centrifugal cream se arators, due to the collection in the feed tu' e of i-lciently tenacious to eX- clude the entering milk from the fd=tiibc and cause it instead to pass oif with the cream. This trouble is xperlenced particw larly at certainti'mes of the year and a pears tofbe due to-fsome ingredient then present in the milk. From'itsfnature the trouble is a in the'separa-tionbf 'the cream from the blue to obstruct the flow of "entering milk tojavoid tion with re serious ohe,ibecause"it results in iiregularity m'ilk an d in the mg densities. I I

The ob ects of my invention are to disperse and destroy foam wll ioh may collect and tend rod notion of cream of varvr r the overflow; of unseparated milk throhgh either outlet of the machine, and to do this without complicating'theconstruction of the machine, without changing its manner of operation or reducing its efllciency, and wi tho ut material incre'ase incost. i i

I will now roc eed to describe my invenerenee to the accompanying drawings, showing aconve'ntionalform of separator-bowl and contained parts of a cream separator and two forms of feed-tubes which may be used therein and which em body my invention, and will then point out the novel features in claims.

In the said drawings, Figure" 1 shows a central vertical section of such separator-bowl and contained parts, including one form of mvim rovedfeed-tube' and hi .2-is asimiv P I laIiJSGClJlOH of an alternative form of my feedtu e.

In the said drawings, 1 indicates an ordinary separator-bowl. mounted upon a vertical shaft 2 and adapted to be rotated thereby at high speed by any suitable means. (Not shown.) 3 indicates the ordinary cover or top for such bowl. The said top is provided with an opening 4, through which the stream of milk to'be separated enters, and is also provided. with the usual outlets 5 and 6 for skimmed milk and cream-respectively The pans which the skimmedmilk and cream are received from theseoutlets are not shown, but may be of the usual ty e.

7 designates the centre feed-tube, which extends from near the centra'ladmissionopening 4 downward or substantially downward to the bottom of the bowl 1 and is there provided with a flan covering the bottom of t e bowl, an d vided near its periphery Witho enings 9. This flange is raised slightly from t e bottom of the bowl by ribs' lo, forming propellervanes, which serve to impart to the entering milk the necessary-rapid rotary motion. These v nes may pro ect-upward a short distance into the vertical portionof the feedtub'o, as shown, in 'order thattheyv may the better impart rotary motion to the hulk, The milk is admitted to this central ,;feedtube in the ordinary-manner through. a-feedcup, of which only the spout is shown in the drawings, said spoutiprog'ectmg downward a short distance into the feed-tube. The milk so delivered-falls to the bottom, of'

the iced-tube, where it is caught by the revolving vanes, and beingjspread out in a thin sheet between the flange 8 of the-tubeand the bottom of the cup of the bowlpasscs ip tliirough the orifices 9 into the main portion of said bowl. By the time the hulk V has passed through these orifices 9 it is nrverv 'rapidrotation, and by centrifugal action the e 8,'substantially. pro-.

. ingcylinde r aswill exclude the entering milk b may be carried line by-i outer en I the feed-tube 1n such that the dottedlines q;

blue milk is separated from the cream, the latter, which is the lighter constituent, being forced to the center of the bowl, where it collects in a thin cylindrical band surrounding the vertical portion of the tube 7, the blue milk filling the remainder of the bowl. Both the cream and the blue or skimmed milk rise continuously within the bowl, the cream passing off through .theaoutlet 6' and the skimmed milk through outlet 5. It is usual in separators of this sort to employ a collect- 12, which serves to gather together the smaller particles of fat which are not in the first instance separated from the blue milk, but which are collectedb' said cylinder into masses possessing su cient body to be forced by displacement back to the main body of separated cream surroundin the feed-tube. The particular collectin cy inder shown 1s.one well known; but I 0 not limit-m self to the use of any articular type of col ecting-cylinder or to t e use of such cylinder at all.

So far as above described the construction of the cream-separator is an ordinary and well-known construction. of such separators it has been foun that at certain times of the 1ylear and owing to some peculiar quality of t e milk foam collects in such tenacity that it revents the flow to greater or less extent of entering milk downward through the feed-tube, re'ecting said milk and causing it to pass off wit the cream. This is of course a serious trouble. I have found that'it may be avoided by providing openings or conduits in the feed-tn esuch,

as the openings 13 in Figs. 1 and for exam 1e, 2. I be leve that these orlfices or openings revent the formation of foam in such masses providfor the escape of the air, which when entangled with the milk, roduces the foam. However, I do not co e myself to any particular theory as to the action which these orifices have, the factb'eing that when resent they do prevent the collection of 0am to anymaterial extent. The precise location of the cream-line isiiot directly observable bu-t theoretical considerations show as, Fig. 1, represent approximately the location of the creamline in the 'particular type of se arator illus trated in that figure. The sai openings 13 maybe simple orifices in the walls of the feedtube, as shown in Fig. 2, or the said 0 enings out beyond the norma creamnean's oflbranch tubes 1 4, Fig. 1, the ds ofwhic'h are beyond said normal mg outlets gramme;

thatthe openings shall be carried out be- 0nd the normal cream-line, as otherwise any 0am passing outtherethrough encounters.

the cream wall surrounding the feed-tube.

In another application for Letters In the o eration quantity and having I" believe that it is desirabledischarge central Patent, discharge central inlet-tube therefor, profiled June 25, 1904, Serial No. 214,094, I have illustrated an alternative form of. feed-tube having at its bottom an enlarged portion provided with foam-dispersing openin s. he outer orifices are outside the norma creamline, and in such application I have claimed, broadly, the invention Therefore I do not claim the said invention broadly herein.

The feed-tubes shown herein are constructed in accordance with Patent No. 666,344, issued to me, in that they comprise a ownwardly-flarin cone '15, fitted to the tube and inclosmg wit said tube and flange 8 a-dead space. The construction and arrangement of means for preventing collection of foam herein illustrated, involving the provisionof openin s in the feed-tube intermediate the ends t ereof, with or without the branch tubes 14 is particularly suitable for feedtubes provided with the said cone, though of course the same construction may be employed in tubes not provided with such cone.

It is obvious that my invention is susceptible of many variations and modifications without departing from the essential features thereof, and therefore I do-not'limit myself to the particulardetails of construction and arran 'ement at I claim s- 1. In a centrifugal separator, the combina-' tion with a rotatable receptacle, of a bottomdischarge central inlet-tube therefor provided at its bottom with an outwardly-projecting flange having in it an opening outside of the normal cream-line forthe passage of liquid from between said flange and the bottom of the receptacle upw rd, said tube provided at a oint above said flangeand within the norrna cream-line, with foam-dispersing means.

2.. In a centrifu al separator, the combination witha rotata le receptacle, of abottominlet-tube therefor, provided at its bottom with an outwardlyproecting flange having in it an opening outside of the normal cream-line for the passage of liquid from between said flange and the bottom of the receptacle upward, said tube provided at a point above said flangtla with a conduit connecting the space wit u said tube and the normal cream-line with the space outside of said tube.

3. In a centrifu tion with a rotata discharge central al separator, the combinale receptacle, of a bottominlet-tube therefor provided with a branch pipe projecting therefrom and connectingthe interior of said tube inner orifice of said ipe being within the normal cream-line an the outer orifice of said pipe being beyond the normal cream-line.

4. In a centrifugal separator, the combination with a rotatable receptacle, of a bottom herein described.

herein illustrated and described.

ICC

-with the space surrounding said tube, the

of the normiil creamiiine for thepassage of liquid from between said flange and the bottom of the receptacle upward, said tube provided at a point above said flange with a branch pipe the'inner orifice of which is within the normal cream-line and the outer orifice of which is beyond such normal cream-line.

5. A feed-tube for centrifugal separators comprising a tube open at the bottom and adapted to discharge liquid through such opening into a rotatable separating-receptacle, said tube provided at a point above its bottom with a branch pipe projecting therevided at its bottom with an outwardly-projecting flan c giving in it an opening outside a from, the inner orifice of which is within the normal cream-line.

6. A feed-tube for centrifugal separators comprising a-tube open at the bottom and having at the bottom a laterally-projectin A flange, said tube adapted to discharge liquid through sucn open bottom into a rotatable separating-receptacle, and provided at a point above said flange with a foam-dispersmg conduit the inner orifice of which is within the normal cream-line.

7. A feed-tube for centrifugal separators comprising a tube open atthe bottom and having at the bottoma laterall -projectin flange, said tube adapted to disc arge liqui ough such open bottom into a rotatable separating-receptacle, and provided at a point above said flange Witha branch pipe the inner orifice of which is within the normal cream-line. t

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

JAS. H. FLEMING.

Witnesses;

H. M. MARBLE, MINERYA .P. BURNET.

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