US12461A - Xcharles x xeavltt - Google Patents

Description

stefcatit i Bf* Letters raient j if .iijBjfa know their creams LAlvm,f the `cityof Quincy, in the county of.l Adams `l` and State otIIlliiiois",` have` invented j 'certain j new and useful Improvements ,in Portable :j Grain-Mills `and I hereby declare the following is a; full,"clear" and exactfdescription thereof, reference*` being yh'adfto the aci.

` Figure 1` isyanelevationof a mill;` FigZ,

`a)verticalisection; Fig; `3,1a top view of the fleverona smallerfscaletiFigrll, a plan of one `of themovable rings Fig. 5, a plan of the annular conductor." f

f,"Theyindicating lettersf refer to the `saine parts inthe different igures wherever they occur. Y j j j 'Ihe"nature ofl my invention consists in j 1 applying to a i portable `cornmill` (in which `f"thefeXternal portion `or concave revolves *upon `axed cone) the `following.improvements;` First, .the combination ofythe bed plate, legs .or supports", the breakerfi` and `fthe main pivot, cast inone piece ashereinafter described,"and,fsecondly, `in combina-` "ftion withthe foregoing a lever in two parts j attached to Ian external revolving concave, constructed andfarranged substantially as lhereinafter described 7 The following isa struction of my improved mill: 'Ihe bed [plate a,legs "or supports b, ogee breaker c, e and vertical main pivot or journal altare cast i j j inone piece.` Upon aflange projecting from fthe loweredge of the bed plate a I place an annularfgrooved conductor (e) which has an f "'outletat f. `Between the top of thebreaker 0,and` the base `of the" pivot is `an annular groove .i with an outletratthe bottom there` of,A forlthe p urposeofcollecting, and dislfchargingthe oilV fromfthe pivot d and preventing it from mixing with the `meal.` A

description of the con# sleeve g, lits upon the` pivot cZ and revolves thereon, its lower edge resting upon the bot- Mtom of the groove z'. A top plate oricover h j having a circular opening in its center a littleless thanthelbase of the breaker c, is'- "joined tothe sleevelg by four strong arms `(Z).` The plate extends to the outer edge of theconductorife, and carries onits under "side, square projecting` Scrapers (n) which fflit the conductor and; revolve therein.

The arms Z, are toothedon their under sides' l 1V j onlinnns t or" corner, iilLiNoIs;

* roitTBIE GRAIN-Minn lto:"correspond" with fthe teeth in thebreaker c formingltogether an effective crusher `for the ycorn, androlof` when ground together. vIn the lspace between the base ofthe breaker c, and theinner edge of the conductor efI secure by bolts (in such a `manner as to be readily`.re` `moved whenrequi-red) qa flat ring of steel or hardened iron (m)- `with grinding teeth on its upper sideof any convenient form, but it is preferable yfor crushing or coarse grind ing touse teeth, thetransverse section of which presents `one side inclined, and the other vert-ical and run the mill in such a direction that the vertical sides of the upper i ,and lower grinding surfaces shall meet each other. In `a groove in the upper plate h, I place another ring (o) of the same size material and form as` m with the teeth of the same formand arranged as before described,

this is also readily removed, when required. Between the ring O, and the central opening is a circle of large teeth inclined to the rear, and vertical to the front andbeveled upward on their inner edges for the purpose of forcing or crowding the grain onto the rings.

I nd `it preferable in grinding fine meal torun the grinding surfaces in such a direction as tooppose the inclined sides of the teeth in one ring, to the inclined sides of the teeth of the other and with that view I construct another pair of rings to fit in the same places as the others with the inclined sides of the teeth reversed. Upon thetop of "the pivot Z which is there seXagonal I place a cap (p) which rests on the sleeve g.

Through the cap pivot and b-ed plate a screw e g passes having its nut at the bottom, the object of this screw' is to regulate the mill by .pressing the grinding surfaces together.

Upon a liange on the edge of the central opening I place a suitable hopper. Upon each side of the hopper, resting upon the top plate 11 and secured thereto by bolts, is

placed apiece of scantling extending to about twelve 'feet from the center of the mill, they there neet at a very acute angle forming the lever r and are secured together by the hooked bolt to which the horses are attached a board s extends from one of the Y together, or by using the rings which present the inclined sides of their teeth to one another, for fine meal, &c. If the teeth should Wear out or break, fresh rings can be put in at a trifling expense. The annular conductor is a great improvement upon mills of this description which allow the meal to fall from all parts of the base of the concave. e

My plan of casting the legs, and other portions in one piece as before described Y adds much to the steadness, and efficiency of the mill while no single stick of timber can aord such strength and stifness as the lever in two parts above described, Without greatly increasing the Weight, and being very diliicult to attach to the mill.

Having thus fully described my improve- Witnesses SAML. GRUBB,

CHAs. Evenmin.

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