US240725A - Churn - Google Patents

Description

(No Model.)

A. JOHNSON.-

Churn.

PatentedApr i l 26,

WITNESSES ATTORN EY N-PETZRS, FHOTO-IJTHOGRAPHER, WASHINGTON. 1.6.

UNITED STATES PATENT OFFICE.

ABIJAH JOHNSON, OF RINGGOLD, GEORGIA.

CHURN.

SPECIFICATION forming part of Letters Patent No. 240,725, dated April 26, 1881.

Application filed March 10,1881. (No model.)

To all whom it may concern:

Be it known that I, ABIJAH JOHNSON, a citizen of the United States, residing at Ringgold, in the county of Gatoosa, and State of Georgia, have invented certain new and useful Improvements in Ohurns; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertaius. to make and usethe same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 is a front elevation, partially in section; and Fig. 2. a plan view of the rectangular revolving frame and dasher. I

This invention has relation to churns, and is an improvement on the Letters Patent N 0. 213.287, granted to me March 18, 1879.

In the accompanying drawings similar letters of reference marked thereon indicate like parts of the invention. a

A is the body 0 the churn, and B the removable cover. V

M is a standart secured to the cover B, provided about the center of its length with the sleeve 1), and at its top with the guide 0, in which works the hollow dasher-shaft (J.

In the sleeve bis journaled a shaft provided at its outer end with a crank, d, and at its in ner end with an angular gear, E, one of the radial arms of which is connected, by a pitman, e, to the dasher-shaft 0, near its upper end. The teeth of the gear E mesh in a smaller gear-wheel, F, having its bearing in the cover B. This gear-wheel F also forms a guide for the dasher-shaft (J, the said shaft passing through it for that purpose The gear F is provided with a sleeve, f, projecting down into the churn,the lower end of said sleeve being secured to the revolving rectangular frame H. The parallel sides h of this frame are set at such an angle that in revolving they will cause the milk to be forced inwardly to the center, where it can be the more effectually operated upon by the dasher K. The dasher K has a threadcut in'its center, and a corresponding thread is cut on the lower end of the .openin g valve, 1.

churn where it will produce the very best effect. The shaft 0 is hollow, and at its upper end communicates with a chamber,L, provided with an inwardly-opening valve, 1. The cover also has a chamber, L, and an outwardly- The object of these chambers and valves is to force a current'of air down through the hollow shaft G, and the body of the milk, causing it to circulate therein and pass out again, as will be hereinafter more fully described.

The operation of the invention is as follows: As the crank d is operated it revolves the wheel E, which gives an up-and-down motion to the shaft (J and its dasher K, and at the same time a circular motion to the rectangular frame H. As the dasher K rises the valve l is opened, and as the dasher descends the valve closes, thus forcing the air down into the churn andthrough the body ofthe milk. thence finding its exit through the valve 1'. This valve 1 as it opens outwardly only allows the confined air to escape, but prevents the ingress of air, and by the combined action of the two valves a sufficient quantity of air is kept circulating in the churn to greatly facilitate the operation of churning.

It will thus be seen that by very simple but effective and ingenious mechanism the contents of the churn are thoroughly operated upon and the butter produced by the expenditure of a minimum of time and labor.

Having thus fully described my invention, what I claimas new and useful and desire to secure by Letters Patent of the United States, 1s-

In a churn, the valves Z Z, hollow shaft 0, dasher K, rectangular frame H, having an gu= lar parallel sides h, and the gearsEF, in combination with the pitman e and crank 01, sub stantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses. ABIJAH JOHNSON. Witnesses J. A. MGLAIN, J. A. HooPER.

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