US854861A - Grinding-mill. - Google Patents

Description

No. 854,861. I PATENTED MAY 28, 1907. J. F. WINGHELL, DEOD. L. L. WINOHBL'L, ADMINISTRATRIX.

GRINDING MILL. APPLwATIbN FILED SEPT. 29,1902. 2 SHEETS-SHEET UNITED STATgsfATENT OFFICE.

JAMES F. WIN OHELL, OF SPRINGFIELD, OHIO; LIDA L. WIN OHELL, ADMIN IS- TRATRIX OF SAID JAMES F. WINOHELL, DECEASED, ASSIGNOR TO CHARLES E. PEASE AND WILLIAM B. ANDERSON, OF DAYTON, OHIO.

GRINDING-MILL.

Specification of Letters Patent.

Patented m 28,-1907.

. Application filed September 29. 1902. Seri l NO- 125,308.

To (ti/Z "1071/0721; it may concern.

Be it known that I, JAMES F. WINoHELL, a citizen of the United States, and a resident of Springfield, in the county of Clarke and State of Ohio, have invented certain new and useful Improvements in Grinding-Mills, of which the following is a full, clear, and exact description.

My invention consists in certain improvements more especially applicable to what are known as attrition mills, wherein the grinding-plates or disks are vertically mounted on horizontal shafts, and pertains to the construction of the standards for the journalbearings or hopsings, and the method of clamping or securing the casing in place. The other part of my invention relates to an improvement in the release mechanism, whereby the adjusted revolving plates may be speedily moved or thrown away from or out of their normal position or relation with each other, for any emergencies, without affecting their adjustment for the desired quality of meal, when returned to place.

My invention will be more particularly pointed out and described in the following specification, of which the accompanying drawings form a part; wherein Figure 1 is a front elevation of mill illustrating my improvements; the j ournal-bearings or housings and its shaft and pulley to the left of the casing (and which transmits power to one of the grinders or plates in the casing in the opposite direction from the other or right hand side), being omitted, as it is unnecessary in the exemplification of my invention. Fig. 2 is an end elevation of the construction shown in Fig. 1. Fig. 3 is a detail view of my improved release device illustrating it thrown off. Fig. 4 is a similar view showing same on.

Like letters of reference indicate identical parts in the various figures.

My invention relates to improvements in mills in which the material is ground or reduced by attrition.

Theshaft a (there being a similar shaft extending out from the other side of the casing A) is provided with the usual circular headplates inside the casing A, to which the grinding plates or faces are secured. The material or grain is fed through a hopper on the mill into the casing A, into the eye of one of the plates or disks, with .which it is provided,

periphery. The grinding plates or faces are preferably provided with longitudinal pockets or sockets, intermediate circumferential rings or ridges.

The two plates or disks are made to revolve rapidly in opposite directions to one another, and the material thrown outward by the rapid rotation of the plates, coming into contact with the rings is temporarily held and brought into violent contact with the other particles or portion of the grain in the casing and intermediate the grinding disks, whereby the grain or material is powdered or reduced.

As before stated, each head-plate or disk is keyed or fastened to an independent shaft a, (the one to the right of the casing A, only being shown as suflicient to illustrate the invention) which has its bearings or mountings in the journal bearings or standards a, of the proper construction and provided with the usual babbitted sleeves or boxes and oil chambers. Mounted on and keyed to the shaft a, is the pulley B, which receives the power through the medium of a belt, and it in turn revolves the shaft a, with its attached head and grinding disks. The journal-bearings or standards a, (1/, are slidably mounted on the base or bed C.

The various parts heretofore described form no part of my invention.

As access to the casing A must frequently be had by reason of the wear of the grinding plates and for other causes, the casing A is constructed in sections as shown in the drawings, and rests on and is bolted or secured to the sub-base C.

In mills as heretofore constructed, the j ournal-bearings or standards supporting the shaft and pulley at the one side of the mill, were mounted on a movable base plate; and when it was desired to replace or have access to the grinding-plates, the various sections or portions of the casing had to be released by unscrewing quite a number of nuts and withdrawing the bolts, and then by the use of block and tackle the inner end of the axle with the head-plate and grinding faces or plates was raised. In these former constructions, where the inner end of the movable bed-plate, with the standards having the oil chambers in the journal bearings, was raised the desired height, it not only necessitated the provision of proper block and tackle and other apparatus, but also additional labor, and in addition thereto was the loss of time and the loss of oil, the latter being caused by the tilting of the oil chambers, all of which are quite important factors. The oil would. thus be drained necessitating relilling or if forgotten, the machinery would become injured. Then again, another inconvenience experienced with the constructions heretofore in use, was the loss of time, attendant upon the care necessary in putting the movable bed-plate with its mountings in proper position; as the proper and safe manipulation of mills of this description required very accurate adjustment of the shafts with their respective headplates and grinding-faces; as the faces of the grinding-plates are quite frequently brought close together, and as each revolves at a high rate of speed in an opposite direction, any inaccuracy of adjustment causing the plates not to run true, and permitting them to contact with each.- other, would result in severe injury to the mill and consequent loss and expense. With my improved construction, the loss of time consequent upon the removal of a large number of bolts and nuts; the necessity for block andv tackle and its support; the loss of oil and time for re-oiling the danger of not obtaining the proper re-adjustment; are entirely obviated.

I secure the standards a, (1 to the bed 0, by the clamping-plates l), l), which take over the foot or projection of the standards (1/, as clearly shown in Fig. 2, and the plate I), is bolted to and held in place by the bolt One of these clamping-plates is provided for each foot of the standards, and they are thus securely held in place.

As shown in Fig. 2, I provide the base or bed C, with lugs p, p, to the side of the base or feet of the standards a. The clamping plates 5, b, are provided with an opening to receive set screws 7", r. It will be readily understood from the construction shown in Fig. 2, that when it is desired to adjust the standards a cross-wise of the base plate or bed t1, this can be accomplished by simply loosening the bolts 0, and then upon turning the set screws r, in the proper direction, the standard a, will be drawn to either side as the case may be, this being possible by reason of the clamping plates 1), b, fitting over the lugs on the feet of the standards. The operation will be readily understood and further description will not be necessary.

Passing from one standard to the other is a connecting rod or link D, whereby the relative position of the standards a, (1 are maintained, and the action of one made subi ject to the other. The one standard (U, is

screw rod is provided at its outer or tree end with a lever D, or any suitable mechanism whereby the same may be turnedin the desired threction. The rod 1), also passes through a yoke or collar 0, which is secured to the bed or base t.

It will be seen that upon loosening the bolts 0, in the clamping-plates t), I), the turning of screw rod t), through the medium of the connecting rod l.) will movethe twostandards simultanetmslyhorizontally on the bed As illustrated in the drawiu s, the lower section of the casing provided with a horizontal tlange which rests on the tlange e, ol the sub-base (1, to which it is bolted. .1 prefer to provide the llange r, on the sub-base. with notches into which the bolts c, take, (as seen in Fig. 2); the reason for which will be hereinafter set forth.

The screw rod l), may be provided with a shoulder intermediate the yoke or collar o. whereby upon. turning it, it will retain its position. but the threads passing through the threaded hanger or collar of the standard will draw the standard along in the direction of the rod .l ()r the rod l), might be tl1t:ttl(tl as could also the yoke or collar o. and upon. turning the rod l), the same would screw through the collar. lCither one ol' these methods may be employed, and the first construction described is the one illustrated in the drawing. The connecting link or red i), will of course draw the other stand ard in the same direction and to the same extent.

The one section of the casing A, l unite or link to the adjoining standard (1, by means of link E.

The 'asing must be securely fastened together, and this l. accomplish by the use of a sullicient number of eye-bolts f, f, which I prefer to construct in the following manner. One section ol the casing A, is provided with lugs between which are placed the bolts/if. which i provide with an. eye at this end and these bolts are held in place by a pin passing through the eye of the bolts from one lug to the other as can readily be seen in Fig l. ()n the opposite section of the casing A, and at points in. the same horizontal plane with the bolt are studs integral with the casing: these studs provided with av slot or groove into which the ends ol' the bolts], f, may drop. The ends of the eye-bolts are screw threaded and when. the bolts are in place, that is, when. they have been inserted in the slot or groove of the studs, the bolts being of sutlicient length to extend slightly beyond the studs, they are provided with nuts or washers which are screwed into place, and it y will thus be seen that by screwing these nuts 1 or washers they will come adjacent the studs and draw the sections of the casing together. By using this method of clamping the seeprovided with screw rod D, (Fig. 1). This 1 tions together, the sections will be snugly IIO drawn into place and can be very quickly accomplished. Of course, when it is'desired to have access to the casing, it will be readily seen that by merely loosening the washers or nuts, the bolts can be swung up out of the way and access had, but the bolts still be retained in proper position to be again fastened into place when it is desired.

In addition to loosening the bolts f, f, when access to the interior of the casing is desired, nuts on the bolts (2, which pass through the flanges on the lower section of the casing a, and sub-base C, must be loosened and also the bolts 0, in the clampingplate b,' and then upon turning the screw-rod D, by means of lever D or any hand-wheel, the standards are simultaneously moved, retaining their relative position with each other, and with them, the side of the casing A, by reason of the link E.

While I have illustrated anddescribed the bolts f, f, as being eye-bolts, it will be readily understood that this construction may be modified and still accomplish the end in view. The bolts f,j, can be constructed in many other ways, and I do not wish to be understood as confining myself to the above construction.

The link or eye-bolt E, permits of transverse adjustment of the standards and the shafting and pulley when the same is found necessary, and is made possible by simply loosening the bolt taking through the eye of bolt E, thus allowing the same to swing slightly on the casing A. This transverse adjustment of the standards is accomplished by means of the set-screws and blocks beneath the legs of the standards as illustrated in Fig. 2.

The simplicity of my construction, and the rapidity and ease with which the mill may be handled and access had to the casing, is very apparent, and its advantages are obvious.

I will now describe the release mechanism illustrated in the drawings and which forms a part of my invention.

Means, of course, must be provided for the proper lateral adjustment of the head-plates with their grinding faces or plates, to meet the requirement for varying quality of meal. The adjustment is accomplished through the feed or temper-screw i, which passes through a threaded sleeve of a rider 1', and bears against the bearing of shaft (1. But one of the shafts is intended to move or be adjustable laterally; and the manner of the bearing for the shaft forms no part of my invention. The feed or temper-screw '11, having been screwed in or out owing to whether fine or coarse meal is desired, it of course, is then desirable to have it remain so until the quality of the meal is intended to be changed.

As occasions frequently arise, either by reasonof a piece of metal or other foreign substance getting into the mill from the elevator, or otherwise to throw apart the grinding-plates and thus stop the action of the mill, it is very important to provide means for its accomplishment, and permit of a quick release. This has sometimes been accomplished heretofore by having the temper or feed screw pass through a double threaded sleeve, the sleeve being provided with much coarser threads which take into the upper or central portion of a yoke 7r; the sleeve being provided with a wheel or hand wheel at its outer end. Upon turning the hand-wheel or lever back-ward, the sleeve is screwed out of the yoke, and in turn brings with it the temper or feed-screw, and thus the grindingplates are released. It will be readily understood, however, that the time consumed in turning the lever and with it the threadedsleeve far enough to affect the lateral relation of the plates, is often too great and thus frequently fails in its accomplishment. In order to accomplish the result for which it is intended, this quick release or emergency release should be made to act almost instantaneously. To have this efiect and overcome the objections of the releases as heretofore constructed, I have devised a release comprising a cam Z, on the inside central portion or arch of the yoke 76 (a similar cam running in the other direction, being provided on the opposite side of the central portion or arch of the yoke The sleeve j, (which is threaded internally and through which the feed or temper-screw i passes) passes through the yoke 7c, and is provided on its inner end. with a somewhat arch shaped head j, whose ends ride on the cam.

The edges of the bearing-ends of the head which come in contact with the inclined portions of the cam, are preferably beveled to permit them to slide more readily.

It will be seen, that by turning the hand wheel m, less than half a revolution (see Fig. 4), the rider or head. j of the sleeve 3', will be thrown to the other ends of the cams as seen in Fig. 3, thus almost instantaneously releasing the plates. I prefer to construct the cam Z with a varying degree of incline, so that when the release is off, the separation of the plates may not only be sufficient, but when it is desired to throw it on again, it can be accomplished without the necessity for too great an effort on the part of the operator.

The release having been thrown off, and the plates separated while the casing A was still containing and receiving grain, when it is desired to throw the plates into their proper juxtaposition, considerable difiiculty would be encountered if the sudden incline of the cam were maintained throughout, by the sudden impact of the plates with the grain. To obviate this difficulty, I provide the cams with a slower or gradual incline as the rider 9', reaches its zenith, or normal position, thus requiring less power to bring the plates into their proper position finally in the gradual manner.

The yoke 76 is held in place by means of rods n, which are secured to the standard. The rods n, are provided with coiled springs intermediate the head or nut of the rod. and the feet of the yoke 7r, and is of the well known construction. By this means the feed or temper-screw is yieldingly held in contact with the shaft bearing, and permits slight lateral movement of the shaft. This lateral play permitted by the automatic springs, however, is not always sutficient for reasons heretofore stated, and it is to supple ment their action, that the quick release is provided.

The advantages of my improved mill are readily apparent, and while, for the purpose of exemplification, I have shown and described mechanism adapted to accomplish the results sought, certain mechanical changes or substitutions may be made without departing from my ii'rvention.

hat I claim as my invention, and wish to secure by Letters Patent, is:

1. In a grinding mill comprising the bed. or base, revolublc shatting, with braid-plates secured thereto, a sectional casing int-losing said head-plates, the combination of a pair of standards slidably mounted on said base and. to one side of said casing, a link intermediate of said standards and connected therewith, means whereby one of said standards is connected to a section of said casing, and mechanism whereby the pair of standards and the easing-section are moved simultaneously in a direction parallel with the axis of the shaft, substantially as shown and in the manner described.

2. In a mill comprising the base and a sectional casing, a pair of standards, a link intermediateof and connecting said standards, revoluble shafting provided with head-plates, said standards supporting the revoluble sha'fting provided with the head-plates, means intermediate of the sectional casing, and one of said standards whereby the relative position of the one to the other is controlled, one of said standards provided with a screw-threaded socket, a threaded rod taking into the threaded socket in the standard, so that upon the turning of the red the pair of standards and sectional casing will be moved simultaneously in the direction of said rod, substantially as shown and lor the purpose described.

3. A grinding mill conmrising bed or base, a sectional casing mounted thereon, a

pair of standards slidably mounted on the base, means intermediate or said standards whereby they are connected with each other,

s l a link connecting one or said standards with the sectional casing, in combination with means connected with one of said standards and the bed or base whereby the stamla'rds and sectional casing are moved simultane ously but retained in their relative posit ions. substantially in the manner and lot the purpose speeilied, r2 w e t. The releasing mechanism tor the grimling-plates ol a mill, comprising a' \ieldingl held yoke secured to one of the standards, a cam in the arch ol' the yoke. a sleeve passing through the yoke-arch and provided with a head adapted to ride on said cam, said sleeve being threaded internally to receive the tem per or 'l eedscrew whose relation with the bearing ol the head-plate shalting is altered according to the position ol' the sleeve-head on the cam, substantially as shown and tor the purpose described.

5. in the releasing meclnmism lot the grinding plates o'l' a mill, a yieldingly-held yoke secured to one ol' the standards and having a cam in its arch, a sleeve passing through the yoke-arch and provided with a head adapted to ride on said cam, said sleeve being thr aded internally to receive the temper or 'l'eed-scrc'w, whereby upon the traveling ol' said head on the cam, the posit ion ol' 1 he lcedscrew in its relation to the head plate shall bearing is altered, substantially in the manner and lot the purpose specilied.

t5. lnthereleasingmechanisml'orgrimlingplates o'l" a mill, a yieldingly held yolv'e secured to one ol" the standards, a cam having varying degree of inclin and located in the arch ol' the yoke, a sleeve passing through the yoke-arch and provided with a head adapted to ride on said -am, said sleeve. adapted to receive the temper or teed-screw and having controllable connection therw with, and mechanism secured to the outer end of said sleeve whereby the same may be operated and the relative posit ion ol t he l'eed screw with the shalt bearing varied according to the position ol' the sleeve-hem] on the am, substantially as shown and tor the purpose spec-i'l'ied.

7. in a mill comprising a bed or base. a pair ol standards slidably mounted on said bed or base and supporting the revoluble sha'l'ts =arrying the head-plates, a sectional casing inclosing the ends ol' the shalts carrying the head plates, a link intermediate ol and connecting with the standards on one side of the sectional casing, mechanism connecting one of said standards with the sectional arsing, and mechanism connccttal with one at said standards and the bed or base whereby upon its operation the standards and casing-section may be moved simultaneously, substantiall as shown aml inthe manner described.

itnesses:

(Tints. l Biuiruzo, Gnonon lllGllHlAX.

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