US100537A - Improved mill-stone dress - Google Patents

Description

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j eQwgLoYgor NAooeDoonns, TEXAS.

Letterman# No. 100,537, met March s, 1870.

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Theschedule referred to these Letters Patent and making part of the B ame.

To allewhom itmay concern:`` l i l Be it known that I, Gr.` W.LOY, of Nacogdoches,

lin the county of Naeogdoclies, and .State of Texas, `have invented anew and improved Mill-Stone Dress;

and I do herebyldeclare that the followingis a full, clear, and exact` description thereof, which will enable those skilled in the alt to make and use the same,.1"ef erence being had tothe accompanying drawings forming part of this specification.` v e My invention` relatcsl to that class of grain-mills e wherein thestones are provided with converging f uri rows, and consists in an improvement upon the present modeof dressingthe stones, as will be more par* ticularly specified hereinafter. i

, Fignrel represents a plan view of the bed-stone,' `showing `the elbow-shape of the furrows.

`Fignrel represents a plan 'view of the face of the l upper stone.

A represent-s thelstationary stone, with the eibow-i dress divided into sections, which are modified in respect tothe lands and small furrows, andnumbered y onmthe edge opposite the center ot' each section.

Nos. l and 2 represent the dress for small mills for grinding corn, from twelveto twenty inches in diameter, with main elbowfurrowsc and solid sections, `the lands or sections being cut up into straw-furrows 0';

No. 3 also represents `the dress for a cornmill, but

. `of large 'size, with an intersecting elbow-furrow l), the

s landsbeingalso cut up into straw-furrows.

No". 4 represents a dress-for a still larger mill, with ftwo intersecting furrows D, the lands cnt up into `small furrows designed for grinding wheat. This might becalled an inclined face. .i i i v The small furrows d` inithe lands are eut very `shall low, with a small space between them, which `makes l the face ofthe stonenearly all furrow.` This, as demonstrated by practical experiment, answers an excel-` Nos. 5 and 6v represent a diierent dress for wheat.

` y l.In making a tine article of our it may be necessary toomit' every 'other small-.furrow in `the lands having la=solid space between them, as here represented,`

10h represent the solid spaces between the furrows; `The advantage gained by the elbowfdress on` the stationary stone is that the grain passes more freely in atf the eye .to the elbow, where the speed is increased.

The straight part of the dress, from the elbowout, inclines back from the way thestone runs, andserves to retain the grain until it is ground, where the greatest speed is given.4

` The furrows marked 7 7 show the angle of the fur,- rows in thebed-stone, which I prefer where the bottom stone runs'. When the bottom stone runs, I angle the furrows about three inches hack from a straight line drawn from the center, (see section No. l.) 8 8 represent the angle in the stationary stone when the top stone runs. i t,

The reason why If'make this difference-in the angles when the bottom stone runs is that, the furrowin the stationary stone being bottom upwards, the mealwill` fall on the runner and be discharged. It also prevents the grain from passing out along vthe furrow, causing 4 e it to be ground by centrifugal force.

The reason why'the furrows in tigsr 8 8 should ineline more the way the mill runs,` is because they would ll up and choke if 'they angled back like igs,..7l 7, for when the latter angle is used the meal is accelerated by the centrifugal force imparted by the bed, which is greater than when the upper stone runs.

I do not confine myself to any particular angle, but claim ,the right of varying the angles to suit the dif" ferent kind of mills; neither do I confine myself to any specified number of furrows, butr claim the A right of varying to suit the dierent sizedinills with the curve and .elbow-dress. I proposel to useV the curve and elbow-dress li'otlr on the same mill.

Fig. 2 represents vthe runner with the curve-dress,

the 'same letters and 'ligures representing .the main furrows, land, and intersecting furrows as in iig. 1. It also shows thediil'erent dresses for wheat and corn for lthe different-sized mills.

The curve dress on the runner has the advantage of distributing the grain more equally throughout the `rock than any dress known tome.;

Having thus described my invention, LWhat I claim as new, and desire to secure by Letters Patent, is-V A stationary stone, having ,the elbow-dress to force the grain out to the poin'ts of greater speed, and the straight dress to retain the grain at the point of greatest speed until ground, asrshowu in iig. 1 ot' drawing,

l in combination with la runner having a curved dress,

`all as shown and described. i e

G. W. LOY.

Witnesses:

J. L. COTTON, 4

R. D. OR'roN.

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