USRE630E - Improved churn - Google Patents

Description

J. McNISVH.

' Churn.

om 5 oo 1 0.7 3 Vl 0 N, d Du u S nu nn UNITED STATi-:S

'PATENT OFFICE.

JAMES MANISH, OF BERLIN, WISGONSIN.

iMPPtovEn oHURN.

Spccification forming part of Letters Patent No. 20,025, dated April 20, 1858; Reissue No. G30, dated November 30, 1858.

' 3 is a vertical transverse section of the same in the line arnav of Fig. 1. Figs. 4 and5 show different styles of eXpressing-rollers which I propose to employ.

Similarletters of reference in each of the several figures indicate corresponding parts.

The nature of my invention consists in the production of butter from milk or cream by expression and friciion, a mode of doing which will be hereinafter described.

In the annexed figures, A A' represent a circle of rollers, of which the lower portions are cone-Shaped, the points of the cones revolving in suitable orifices made in the botto'm of the churn-box B at such distances from each other in the path of a circle as to admit of the periphery of the rollers touching at every point from the inverted base of the cone to the top of the rollers.

C' is the central agitatng shaft or roller provided with two or more semi-spiral fianges or wings, D D. A large spurwheehE, is fitted fast to the upper end of the roller 0, and small pinion-wheels F F F F to the upper ends of the expressing or friction'rollers AAA A A. The large-spur-wheel and the pinions gear together as illustrated in Fig. 1, and it will be perceiyed by reference to Fig. l that by applying power to the i central shaft and revolving it aldirect motion Will only be communicated to every alternate roller A, and that the rollers A, When set in motion in the direction indicated by the arrows l, communicate by'friction motion in an opposing direction to the roller Af, as indicated by the arrows 2.

By turning the central roller, G, rapidly 'the cream is dashed by the action of theflanges against the inside of the encirclng rollers A A', which are at the same time set in motion in the direction indicated by the arrows, thus pressing the milk or cream between them as it passes from the inside space, a, with the cirele of rollers AA, into the space b, outside of the same.

The effect of the semi-spiral formation of the flanges is raising the milk or cream to the upper central portion of the churn and creating a partial vacuum in the lower central' portion. This vacuum is im nediately filled by cream rushing in from space b between the cone-Shaped points of the rollers, its passage back being aided by the motion of the rollers in the direction of the arrow 2.

BV this arrangement every portion of the milk or cream is repeatedly snbjected to the friction of the rollers in the circle until all the globules which contain the butter are burst.

The rollers, as shown in Fig. 2, are smooth lon the surface, and this form I think is best adapted to the churning of milk. For thin cream the corrugated roller (see Fig. 4) is best, and for thick cream the fluted roller.

(See Fig. 5.)

It Will be perceived that when this machine is set in motion three separate and.- distinct results are accomplished First, the cream is raised from the bottom of the central space, a,- second, it is dashed against the inside of the encircling rollers 3 third, it is subject to close frictionjn its passage between the rollers, and thus all the conditions necessary to produce'good butter in the shortest possible time are fulfilled.

The rollers are all secured in the iron frame at top and have no fastening below. All that is necessary when the churning is completed is to lift off the top frame, which necesysarily takes out the rollers and removes every impediment to gathering the butter.

I do not Wish to confine myself to the particnlar arrangement of the apparatus herein specified, as there are other arrangements which will readily suggest themselves which will be obvious-evasions of my invention.

I have conceived the idea of breaking or bursting the globules or saeks which -contain the butter by passin g them between two solid substances, either by the moving of one ror both of them, Whether these substances be rubbers or 1'o11ers,or What not.

Having thus fully described my invention, what I elaim as new7 and desire to secure by Letters Patent, s

Expressing the butter from the globules or seeks of milk or cream by frietion-sueh as rubbing, mashng, or grindiIJg-when aeeomplished in :my manner, the equivalent of that herein specified.

In testimony Whereof' I hereunto set my hand.

JAMES MAGNISH. Witnesses:

G. (Joormz, U. M. A'LEXANDER.

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