US1206316A - Corn-mill. - Google Patents

Description

C. S. ELLIS.

CORN MILL.

APPLlcATloN FILED 1AN.24. |912.

3 SHEETS-SHEET 1.

el Hoznm C. S. ELLIS.

CORN MILL.

APPLICATION FILED IAN. 24. I9I2.

UB,- I-I. Patented Nov. 28, 1916.

3 SHEETS-SHEET 2.

C. S. ELLIS.

CORN MILL.

APPLICATION FILED IAN. 24, I9I2.

I ,m6, I I IPaIen-Id Nov. 28, 1916.

3 SHEETS-SHEET 3.

@AVERE FAFFT CHARLES S. ELLIS, 0F ORE HILL, NORTH CAROLINA.

CORN-MILL.

Application filed January 24, 1912.

To all whom it may concern Be it known that I, CHARLES S. ELLIS, a citizen of the United States of America, residing at Ore Hill, in the county of Chatham and State of North Carolina, have invented new and useful Improvements in Corn-Mills, of which the following is a specification.

rihis invention relates to mills, and it has particular reference to mills for grinding corn and the like of that class in which the stones or grinding elements are disposed vertically so that the runner stone will rotate about an approximately horizontal axis.

@ne object of the invention is to improve the construction of the frame or casing, said casing comprising a stationary and an ad justable member, one of which contains, the runner stone and the other the bed stone, thus enabling the bed stone to be trammed up or adjusted with reference to the runner stone in an easy and expeditious manner.

A further object of the invention is to simplify and improve the construction and operation of the feeding device.

A further object of the invention is to combine with the runner stone a fan which, when the lmill is in operation, will operate to dispose vof fine dust arising from the grinding operation.

With these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claim.

ln the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claim may be resorted to when desired.

In the drawings, Figure 1 is a front elevation of a grinding mill constructed in accordance with the invention. Fig. 2 is a longitudinal vertical sectional view of the same. Fig. 3 is a horizontal sectional view taken on the line 3-3 in'Fig. 2. Fig. 4; is an end elevation. Fig. 5 is a vertical transverse sectional view taken on the line 5-5 lll 2 :mit

Corresponding parts in the several figures are denoted by like characters of reference.

Specicaton of Letters Patent.

Patented Nov. 28, 1016.

Serial No. 673,051.

The casing of the mill comprises two sections or members A and B which are adapted to telescope one within the other. ln the accompanying drawing the runner stone casing B has been shown as telescoping into the bed stone casing A, but this condition may be reversed when desired. The bed stone 1 is securely mounted in the casing member A where it may be firmly secured by embedding it in cement,shown at 2. The casing member A containing the bed stone has been shown as consisting of an integral casting, while the casing member B containing the runner stone has been shown as comprising a hoop 3 and a head i suitably connected therewith., this being a simple and inexpensive construction. The runner stone easing B has also been shown as equipped with a discharge spout 5. The casing mem ber A forms part of a stand including legs or uprights 6 having feet 7 adapted to rest upon a suitable support, said feet being provided with elongated slots 8 for the passage of fastening members, such as bolts 9, whereby the casing member may be secured icln position upon supporting sills or upon a oor.

The casing member A includes a box or bearing 10 which is adapted to support one end of the shaftll which extends through the eye of the bed stone, said shaft carrying a feed screw 12. The shaft is additionally supported in boxes or bearings 13, 111 upon frame stands 15, 16 between which it carries a pulley 17 adapted to receive motion by means of a belt or band from a suitable source of power. The casing member A is also equipped with a feed chute 18 through which the material that is to be ground is fed to the eye of the bed stone from which it is transferred by means of the feed screw 12 to the space between the grinding faces of the bed stone 1 and the runner stone 19. The latter is suitably mounted upon the shaft 11 within the casing member B by means of a hub 20, and said hub also carries a fan composed of a plurality of wings or blades 21. The head 4 of the casing member B is provided with an aperture 22.

The frame stands 15 and 16 are provided with feet 23 having apertures 24'for the passage of securing bolts or fastening members, and said stands are securely connected together by means of brace rods 25. rlhe stand 15, which for convenience will be designated as the middle stand, is adjustably connected with the frame structure comprising the casing member A and the legs G by means of brace rods 26 which are threaded at one end, as shown at 27, and screwed into suitable sockets 2S in the middle frame 15, where said rods are iirmly secured by means of lock nuts 29. Four brace rods are preferably used, the same being disposed about equidistantly. The opposite ends of the rods 26 are lreduced to present shoulders 30, as best seen in Fig. 1 of the drawings, said shoulders abutting upon the legs 6 and upon the lugs 11. that extend outwardly from the casing member A, said legs and lugs being apertured for the passage of the Vreduced ends of the rods 26 which are threaded as shown and provided with tightening nuts 32 whereby the parts are connected together very securely and in such a manner as to avoid vibration. At the same time it will be seen that by loosening the nuts 32 and the lock nuts 29,.as well as the fastening` members 9, the threaded ends 27 of the rods 26 may be adjusted-in the sockets 28 so as to effect relative adjustment of the telescoping casing members A' and B. By this construction it will be seen that the casing member containing the bed stone is capable of adjustment toward and from the casing member containing the runner stone, and positive adjustment may be made by each of the four rods 26,'independently, thus enabling the bed stone to be trammed or trued with reference to the runner stone and also coupling the casing members A and B together in such a manner as to enable adjustment to be readily effected. It'will be understood that the rods 26 might within the scope vof this `invention be connected lrigidly w-ith the middle frame and adjustably with the frame member including the casi-ng'A, the object being simply to enable the telescoping members A and B to be relatively adjusted in order to effect the desired adjustn'ient of the bed stone with reference to the runner stone.

Frame members 33', which may be mounted upon some of the brace rods 26 serve to support a hopper 34 from which the mill is fed. The frame mem-bers 33' are connected together by bars 35' supporti-ng depending` straps 3G which are connected by a cross bar ape-n. which. a feed shoe 38 is pivotally mounted, said feed sh-oe ybeing connected with one ofthe frame members 33 by means of a coi'led spring 39 whereby it is resiliently forced in one direction The casing member A supports an upright 40 carrying a pulley 4:1 which is connected by a band 42 With a pulley 43' upon the shaft 11.Y The shaft or spi'ndlfe 44.carrying the Vpulley 41 alsocarries a. cam or eccentric 45 enga-ging a strap 46 upon one side of the shoe 38 which by the tension oitthe spring 39' is held in constant engagement with said eccentric, sothat when the eccentric rotates about its axis it will operate to vibrate the pivotally supported shoe 2h, thereby discharging material from the latter into the mouth of the feed chute 18. This feed movement, as will be seen, is extremely simple and effective and is operated constantly when the mill is in operation.

The end stand 1G of the f 'ame structure is provided with apertures for the passage of bolts or rods 47 which slidably engage said frame stand and are provided at their inner ends with springs 4S retained in position by means of nuts 49. The outer ends of the rods 47 are connected together by a cross bar or yoke 50 which is firmly secured upon said rods, and said yoke has a threaded aperture for the passage of a screw 52 having a hand wheel 53 whereby it may be adjusted, said screw bearing at its inner end against a follower 5S within a hub or sleeve 54 which is bolted upon the frame stand 16 and which limits the movement in one direction of the spring pressed yoke 50, said sleeve having arms 59 which are apertured for the passage of the rods 47. Between the follower 5S and the end of the shaft 11 anti-friction balls 55 are interposed to reduce friction between the shaft and the screw 52. It will be observed that by tightening the screw 52 against the follower 58, the springs 4S upon the rods 47 will be placed under tension, the degree of tension being regulated by the screw 52, which latter carries a lock nut 56 having a handle 57 whereby it may be readily tightened against the yoke 50 for the purpose of securing the adjusting screw at the desired adjustment. The shaft 11 carrying the run` ner stone will obviously be forced by the tension of the springs 48 in the direction of the bed stone, the adjustment being capable of very minute regulation. It is obvious that material fed through the chute 18 and through the eye of the bed stone will pass between the faces of the stones where it is properly reduced, the degree of inencss being capable of being very accurately gaged by the preliminary adjustment 0f the bed stone with reference to the face of the runner stone, while the latter is capable of yielding against the tension of the springs 4S in the event of any particle of hard substance, such as a piece of metal or the like being accidentally fed between the stones along with the material to be ground, thereby avoiding injury to the mill.

From the foregoing description, taken in connection with the drawings hereto annexed, the operation and advantages of the improved mill will be readily understood. The construction is simple and inexpensive, and the mill has proven in practical operation to be thoroughly efficient for the purpose for which it is designed. It may be especially noted that in the grinding of various grades of corn, it is particularly desirable that the meal be reduced to precisely the proper' degree of neness in order to make a thoroughly satisfactory and superior product, and the facility With which relative adjustment of the bed and runner stones may be effected enables this object to be attained in a convenient and satisfactory manner.

Having thus described the invention, what is claimed as new, is

A mill comprising uprights adapted to be movably mounted upon a support, a bed stone supported by the uprights, a frame mounted in fixed position opposite the movable uprights7 a runner stone journaled for rotation in the frame, means for adjusting the runner stone toward the bed stone, means for resiliently holding said adjusting means and the runner stone toward the bed stone, rods screvv threaded in the frame and disposed transverselyacross the bed stone beyond the edges thereof, said rods being journaled in the uprights and restrained against longitudinal movement in the same and means for locking the rods to the frame.

In testimony whereof I aflx my signature in presence of tWo Witnesses.

CHARLES S. ELLIS. Witnesses M. S. ELLIS, E. H. FAUs'r.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of atents, Washington, D. C."

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