US1168151A - Milk-strainer. - Google Patents

Description

P. J. BOLEN.

MILK STRAINER.

APPLICATION FILED SEPT. 28. 1915.

- 1,168,1 51. Patented Jan. 11, 1916.

COLUMBIA PLANOGRAPH ca, WASHINGTON. D. c.

KINIIEDWATE PATENT m rAirinIcK'J; nonun on WICHITA, KANSAS.

To all wh qm it concern 7 Be it knownjthat- I, PArrn on ia citizen of the United States, residing at Wichita, in the county, of..Sedgwick and State of Kansas, have invented certain new and useful Improvements v in MillbStrainers; and I do hereby declare the following to bea full, clear, and exact;descri ption of the. invention, such as will enable others skilled in the art to which it appertainsto make and use the same.

This invention relates to filters, and more especially to strainers; and the object of the same is to produce a compound strainer for use on fresh milk. The inventionv comprises a plurality of strainers containing cottonor eottoii .flannel,jand-v anflfelelment beneath the lower strainer 'als'ocontaining the same ma terial and overwhich the milk has to flow in its passage out ofthe deiiice. Details are set forth inthe following specification. and shown in the 'drawingswherein Figure l is a ,central.vertical section of this devlce complete, and Flg. 21s a perspective detail of one element removed.- I

Referring to the drawings,v the numeral, 1 designates a funnel having an' ample cylindrical spout 2 closed across its bottom at 3 by the bottom of a cup 4 whose wall rises to the point 5 and is spaced from the spout to produce an annular outlet, 6 around the lower; endlof thejlatter; and withinsaid spout'are removably located the four strainer l elements. .JustabOVeits lgwer endthespout is provided with arrannular series of slots 7- and intervening holes .S frSr-a purpose yet to appear. i Within said spout is disposed a seriesf-of elements whereof: four are shown inthe accompanying drawings.- The lower-v most is what might be called a catching ele-.. ment. It comprises a collar or ring: IO 1'est-. ing onthe bottom- 3 and having an inturned flange 11 around its upper end which stands below the slots 7, and across this flange is stretchedascreenl5 of rather coarse mesh. This, element contains cotton or cotton flan nel19" confined within the collar and between the'screen 15 and the bottom 3. The

elements above the catchingelement may be called straining elements. The one next above it comprises a metallic cylinder or collarw20 with inturned. flanges 21 and 22 around its upper and lower ends, and the former is covered with a screen 25 of medium mesh. Above the lower flange 22 is; an annular. series. of holes 23.,-.interspersed with those in the spout.

' Speci ficat ien of Letters Iatent; Patented Jan. 11,1916; Applioationfileesegteiiiher 23, 1915.. Serial no. 53,107.

with notches. 27 so disposed that theywill register with theslots 7 when the holes 28 register with. the holes 8 in the spout, and this will occur when the lower flange 22 rests on the upper flange 11 of the lowermostelement. Within the collar 20 and beneath the strainer 25 is cotton or cotton flannel 29. The third element is a cylinder or collar 30 having inturned flanges 31 and 32 at its upper and lower ends and a strainer 35 of medium mesh across its upper end, beneath which is cotton or cotton flannel 3.9; and the lower flange 32 rests on the upper flange 21 of the second element The fourth element is a collar or ring 40 having an inturned flange 42 around its lower end which rests 31 on the upper flange 31 of the thirdselement,

which rests on a shoulder 9 formed Within the lower end of the tunnel 1 and uniting it with the upper end of. the spout 2; and at the upper end of this element is a strainer 45 of quite fine mesh, which I. preferably make conical as shown. This element may have an arched: handle 46 which can. be reached from above for lifting the element out of place, and beneath the strainer is cotton or cotton flannel 49. g

I provide a suitable tool (not shown) for reaching down through the funnel and en.- gagin'g the strainer of each element, when the upper element is removed, so that the elements beneath it can be lifted. successively out; of place or the second. element can be adjusted by turning, it on itsaxis until its openings register more or less completely All parts of this device are of metal, so treated that it will not rust, and the cotton. or cotton flannel filtering material must be pure and clean and will be of a proper density tofilter the milk without unduly retard. ing. its passage through the devlce. In use, the lower or catching element is inserted at the bottom of the column as shown, when its screen 15 stands below the openings 7 and 8;, next the second element is inserted'and pushed downward until it rests on the first element, after which it is turned so that its openings 27 and 28 register more or less accurately w th those of :5

I second time.

Fresh milk is now poured into the funnel, and if it is observed that it clogs the strainer, the uppermost element may be taken out of place temporarily and the third element lifted. so as to loosen up the filling 39. Thecylinders or collars 20 and will fit with some friction within the cylindrical spout, and as the weight of the parts is negligible they will doubtless remainin their adjusted positions, The fine strainer 45 takes out all extraneous matter that may fall into the milk, and the various layers of filling will strain out sediment, fibers, broken tissues, slime, and blood; and this'strainer is especiallyeflicacious if the milk be chilled and passed through it a After passing down through the three strainer elements and saturating the filling in the lowermost, the milk flows radially outward over said lowermost element which therefore serves more as a catcher than as a strainer. With the parts made of ample size, the strainer will clean about forty gallons of milk without replacing the filling, but from time to time the various elements must be removed, and the cotton filling replenished. Obviously the I upper element where the filling will not be packed at all densely, will take out the coarsest particles, the third element the next coarsest, and'the second element the finest; and at the bottom of the column the strained milk saturates the filling in the lowermost element, and thereafter flows downonto it and over it (but not through it) in its passage radially through the registering openings to the cup.' -Within the channel 6 in the latter the strainedv milk rises until it flows over its upper edge 5, and this device is all ready to'be set into a milk can or receptacle to catch the milk. In large dairies where there is much milk and the strainer is in constant use, it may be well to provide two sets of elements so that an operator can be cleaning one set and replacing its filling while the other set is in use, and the substitution will take'but a moment. It will be observed that bottom 3 of the cup serves as the bottom of the lowermost element, and the strainer at the top of this element serves as the bottom of the one above; in other words, each element is open atthe bottom and closed at the top excepting for the lower flange, and the upper flange and wire'gauze of each element constitutes the bottom of the-element above when they are assembled in the column. The lower flanges will'be of sufficient width to hold the loose filling in placev when the several elements are in verted, but should not be wide enough to interrupt the filtering Qrstraining process.

What I claim is: I

, 1. In a milk strainer, the combination with a funnel whosespout has its lower end closed and its wall provided with an annular series of openings on a line above said lower end; of a series of independent filtering ,elements removably disposed within said spout, the lowermost having a series of openings adapted to be thrown into register with those in the spout, and a catching element resting on said bottom and supporting said lowermost filtering element. 2. In a milk strainer, the combination with a funnel whose spout has its lower end closed and its wall provided with an annularseries of openings on a line above said lower end; of a series of independent filtering elements 'removably disposed within said spout, the lowermost having a 5 series of openings adapted to be thrown into register withthose in the spout, and a catching element'resting on said bottom and supporting said lowermost filtering M 6 outlets combined with a catching element seated in i i the spout beneath said openings and resting on said bottom, and a series of filtering elements in the spout above said catching element and respectively above each other, the

lowermost having openings adapted to register with those in the spout and each element containing. a filling of filtering material. f y 4:. In a milk strainer, the combination with a funnel, a cylindrical spout having radial openings near its lower end and an out-turned shoulder at its upper end unit ing it with the smaller end of the funnel,

and a cup whosebottom closes the lower end of the spout and whose wall rises around its openings; of catching'element in the spout beneath its openings and resting on the bottom of the'cup, a series of filtering elements in the spout above the catching element, flanges at the upper and lower ends of said elements adapted to contact with each other, and anuppermostfiltering element having an inturned flange at its lower end, an outturned flange at its upper end adapted to a handle; 7 p V In testimonywhereof I afiix my signa ture.

Washington, D. G."

rest on said shoulder, and

PATRICK'J'. BOLENQ V 1.

Copies of this patent may be obtained for five .cents each, by addressingthe Commissioner of Patents, i

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