US67118A - N-peters - Google Patents

Description

@uiten gisten atrnt @frn A. B. HURD, or Warn-INS., NEWYORK.

Lamas Patent No. 67,118, dared .my 2s, 1867,

IMPROVEMENT IN CHURNfDASHER.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, A. B. HURD, of Watkins, Schuyler county, State of New York, have invented certain new and useful improvements Ain Churn-Dashers; and I do hereby declare that the following is a full and exact descriptionV thereof, reference being had to the accompanying drawings, making part of this specification.

Figure 1 is a perspective view of my improved dasher.

Figure 2 is a similar view, showing a modification of the rod.

Figure 3, a central vertical section, showing anothermodiication.

Like letters of reference indicate corresponding parts in all the figures.

My improvement belongs to that class known as atmospheric dashcrs. The invention consistsin the employ- V ment of a plug at the bottom of the churn, over which the hollow rod slides to displace the air and force it into v -the cream. Also, in the employment of spiral-winged wheels inserted in the dasherfwings, and forming auxil- I i iary agtators; and, further, in the employment of a thermometer attached to the bottom of the dasher-rod, and so arranged that it rests below the surface of the cream in churning, and may be drawn up through the eye of the churn-cover for inspection. l

As represented in the drawings, A is the rod and B the dasher. The rod is tubular, for the passage of air, and may he made entirely of metal, as in gfl, in which case the valve a is situated in a cap that slips over the top, or it may be of wood, as in g. 2, in which caso the valve opens from the side of the rod, above the churn, or it maybe of combined wood and metal, as in iig. 3, in which case the valve is situated inside at the junction of the wood with the metal. 'Ilhe lower end of the rod slides loosely over a plug, C, which may either be screwed into the centre of the churn-bottom, as in tig. 3, or simply rest free on the bottom by"its own weight, as in iig. 1. By this arrangement, atthe down stroke the plug enters the space in the tubo below the valve, and displaces its bulk of the air, which is forced down around the sides of the plug, and 'into and through the cream, thereby imparting not only positive agitation, but exerting a beneficial influence upon the globules 'by v the in'termixture.` It will be seen that the forcing et' the air into the cream is positive and unavoidable; andin this respect it diers from all other atmospheric dashers with which I am acquainted, since in those the air ,is simply confined in a. closed space, and is not really driven through the cream, if we except in pump-and-bellows churns. '.lhis arrangement is of the simplest and most effective character, since the parts producing the action i are all in the bottom of the churn, out of the way, and not liable to disarrangement. The parts are easily washed, since it is only necessary, in separating, to lift the dasheroff. The dasher is provided with 'ourwings, i lfb b b, as usual. In these -are cut holes c c, in which are fitted spirally-winged wheels d d, turning on bearings ff. Spiral wheels forming the entire dasher itself, 'irrespective of other parts, have before been employed. Mine diiers from such, inasmuch as I insert the wheels in holes in thewings b b, to which "they are auxiliary. 'y The wheels arranged alone, simply pass up through and have a rotary motionirnparted by the resistance of the cream, but cut through without thoroughly breaking it. In my-dasher a positive up-and-down motion is given by the flat wings b b, while an auxiliary revolving motion is given bythe spiral wheels, the' combined action being to thoroughly break the globules. The flat wings, by lifting the cream, concentrate it over the openings holding the spiral wings. The agitation thus produced, combined with that from the air, is most thorough and l effective. I attach a thermometer, D, to the lower end of the dashcr-rod, as shown in 1, sinking it flush I' with the surface; and where a metallic dasher-rod is used, casing it so as to protect'it.

I am aware that thermometers have before been employed in churns,'but so far as I-am aware not at the bottom of the dasher. By locating it at that point I accomplish two important results where a dash-churn is employed: rst, I keep it constantly beneath the surface of the cream in use, so that it will indicate accurately the temperature, and, second, I enable it to be drawn up through the eye of the cover of the churn, so that it can be inspected at any time without removing the cover. I am aware of no other device in whiehthesc combined advantages are secured. I do not claim broadly either spiral wings or the employment of a thermomh eter in churns.

What I claim as my invention, and desir-ete secure by Letters Patent, is-' 1. The combination of the plug C, at the bottom'ot` the churn, with the tubular rod A sliding over it for displacing the air, as herein set forth. i

v2. '.lhe combination of the spiral wheels d withthe dasher-wings b, arranged and operating in the manner and for the purpose set forth. y./ v

3. The special construction and arrangement of, the churn-dasher with all its parts, as herein specied. In witness-whereof I have hereunto signed my name in the presence of two subscribing witnesses. Y A. n. HURD.

Witnesses:

H. H. SMITH, ORLANDO HURD.

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