US9096A - Portable grain-mill - Google Patents

Description

C. LEAVITT. Grinding Mill.

Patented July 6, i852.

ila S CHARLES LEAVITT, OF QUINCY, ILLINOIS.

PORTABLE GRAIN-MILL.

Specification of Letters Patent No. 9,096, dated July 6, 1852.

To all whom it may concern:

Be itknown that I, CHARLES LEAVITT, of Quincy, in the county of Adams and State of Illinois, have invented certain new and useful Improvements in Portable Mills for Grinding and Crushing Corn and other Grains, Roots, Fruit, &c.; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon, of which- Figure l is a perspective view of the entire apparatus. Fig. 2 is a vertical section through the mill.

My improvements consist in constructing a portable mill applicable to the various purposes required by farmers and others, such as crushing corn and cob together, grinding meal, shelling corn, crushing roots, mashing apples for cider and other like purposes-in such a manner that it shall be simple and durable, and consisting of few parts, and consequently be low in cost, so as to bring it within the means of every farmer to possess one; also in the easy and simple manner in which it can be set up and secured for use and again removed, and in its facility of adjustment and the adaptability of the same machine to the various purposes above mentioned. These objects are accomplished by the following means: by making the inner grinding cone the fixed one and causing the exterior cone or concave to revolve around it, by which a heavy external frame is entirely dispensed with and the whole mill made capable of being firmly fixed without bolts, on the end of a post, or the stump of a tree if convenient. The central shaft or spindle and its step or journals are also dispensed with, and in the space which they usually occupy is placed a simple and convenient adjusting screw. The revolving concave is suspended from but one bearing, which with its adjusting screw is supported from the fixed inner cone or convex. The lever for the attachment of the horse combines lightness and strength with a very convenient mode of connecting it with the concave of the mill.

rlhe mill is adapted to the various purposes above enumerated, as well as caused to grind or crush to different degrees of fineness, by adjusting the elevation of the concave, which causes the roughened conical grinding surfaces to approach to or recede from each other.

In the drawings (a) represents a post or stump which is squared at the top and made to lit a tapered square hole in the piece (o), thus supporting the whole apparatus in a simple and iirm manner, without the use of bolts or wedges. The piece (b) is the internal cone or grinding convex of the mill and is grooved and roughened on its exterior in the usual manner, and instead of being made to revolve within a iixed case as in the ordinary mills, it is itself fixed, and the exterior cone or concave (c) is made to revolve on it. The internal cone has two uprights supporting a collar (d) having a square hole through it. In this hole a piece (e) having its lower part squared to it slides up and down, and its elevation is regulated by the screw working in the top of the cone rlhe shaft of the screw passes through the piece (e), having a shoulder below and a washer and nut above, to prevent. it from either rising or falling independently of the screw. The upper part of the piece (e) forms a bearing for the collar (g), which is attached by two arms to the concave (c), which is thus suspended by a bearing which can be adjusted in its elevation by turning the screw (f) by means of the handle (71)).

is a hopper attached to the concave, into which the substances to be crushed or ground are thrown.

The lower extremity of the revolving concave (c) has a rabbet turned on its interior edge, into which a flange (7c) on the interior cone projects, serving to guide the concave concentrically with the interior cone and admitting of its being raised and lowered. The flange (lc) is cut away at intervals to allow of the grain, &c., falling through after having been acted on by the mill.

The lever to which the horse is connected for giving motion to the outer cone or concave is constructed and attached as follows: Two pieces (Z) are united at their extremities where the horse is to be attached and their opposite ends are connected by a short piece (m), thus forming a triangle of sufficient width at the base to embrace the concave (c), which has three pins projecting from its exterior, two of them at opposite sides fitting into notches in the levers (l), for the purpose of readily securing the mill and the third by pressing on the back piece on the top of a post or stump, Without the 10 lgwzhkeps tlie utr extremity at the proper use of bolts or Wedges, &o., as set forth.

eig t ort e rat. 5 What I claim as my invention and de- CHARLES LEAVITT sire to secure by Letters Patent is Witnesses:

Forming the inner stationary cone With EDWARD EVERETT, a cavity (square or otherwise) as described, PHILo A. GOODWIN.

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