US790338A - Sweep-mill. - Google Patents

Description

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l attomwcf No. l790.338.

- n PTENTED MAY. 23,1905. A. A. AMBLER." SWEEP MILL.A

APPLIoATfoN FILED MAR. 19.1904.

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l SWEEP MILL. APPLICATION FILED MAR. 19,`1904.

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Patented May a3, 1905.

ARTHUR AMBLER, OF SPRINGFIELD, OHIO, ASSIGNOR TO THE FOOS MANUFACTURING COMPANY, OF

TION OF OHIO.

SPRINGFIELD, OHIO, A CORPORA- swEEP-mlLL.

SPECIFICATION forming part of Letters PatentNvo. 790,338, dated May 23, 1905.

Application filed March 19, 1904. Serial No. 198,938. i

To all r11/'wm it may concern,-

j j Be it known that I, ARTHUR A. AMBLER, a

citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and usein the nature of an improvementupon the Vconstruction set forth in Letters Patent N o.

757,097, issued April 12, 1904, to The Foos yManufacturing Company, the assignee of the present application, as assignee of Deards,

-Copenhaver, and Adelsperger, in which there is disclosed a grinding-mill of the sweep7 type comprising inner and outer grinding rings or cones rotating in opposite directions, the gearing runnin in an oil-receptacle formed in the base-p ate, the outer cone be-4 ing hinged, so as to ermit it to be swung back to open up them' l, and adjusting mechanism being rovided for the inner cone operated lfrom t e top of the mill and being separable, so as to permit the opening up of the mill in the manner just referred to.

One of the objects of my present invention is to provide a mode of construction whereby the wear of the base-plate may be reduced or avoided, provision being made for taking the Awear of the gearing upon parts which arev readily renewable at slight expense.

A further object of my invention is to provide improved means for adjusting the inner and outer cones relatively to each other and for separating the-several parts to permit the opening up of the mill.

To these ends my invention consists in certain novel features, which I will now roceed to describe and'will then vparticular y point out in the claims.

In the accompanying drawings, Figure l is a vertical sectional view of a structure embodying my invention in one form. Fig. 2 is a plan section taken on the line :l: of Fig. l and lookin in the direction of the arrows. Fig. 3 `is a p an view of the central pinion. Fig. 4 is an elevation thereof, partly in secvtion. Fig. 5 is a bottom-plan view of the body or hub of the inner grinding cone or ring. Fig. 6 is a vertical sectional-.view of the same, taken in a plane at right angles to the section shown in Fig. 1. Fig, 7 is a development or projection of the clutch-jaws of the part shown in Figs. 5 and 6. Fig. 8 is a sectional view of the base-plate detached. Fig. v9 isa plan section taken just above the master-gear, showing a modified form of my invention; and Fig. 10 is a vertical sectional view of the same. A

In the accompanying drawings, 1 indicates a suitable base-plate, preferably circular in its general form and supported upon three or more legs 2. This base-plate is provided with an annular flange 3, extending upward from its margin'and forming, in'connection with the body of the base-plate, a reservoir or receptacle adapted to receive the mastergear and' coperating pinions by means of which the rotary motion of the master-gear is transmitted to the inner grinding-cone, said reservoir also serving to lreceive and retain a suitable lubricant in which these parts run, by which means they are effectively protected from excessive friction and wear.

4 indicates the master-gear, which is an internally-toothed gear and which in the form shown in Figs. 1 and 2 rests upon the baseplate within the flange 3. It is provided with a horizontal'flange 5, projecting from its upper portion outward over the fiange 3, so as to prevent the passage of dust, meal, or the like between said flanges into the oil-reser voir. The master-wheel is held in position or centered by means of three pinions 6, with which it meshes, said pinions being mounted within the oil receptacle or reservoir, and it is to the bearings of these pinions that Lone feature of my invention particularly relates.

Each pinion is mounted upon an integral bearing-stud 7, formed in one piece with the base-plate 1 and extending upward above the same to form a support for the meal-pan hereinafter referred to. These studs are conical or tapering, being of upwardly-decreasing diameter, and each stud is provided with a corresponding tapering wearing-sleeve 3, preferably constructed of steel and fitting on the corresponding stud 7 tightly enough to prevent rotation of the sleeve upon the stud, while at the same time permitting ready removal of the sleeve when necessary. The apertures in the pinions are of course correspondingly tapered, and in the construction shown in Figs. 1 and 2 the apertures of the pinions are of such size that the pinions bear and travel upon the base-plate 1.

Through' each stud 7 there is formed a ver- ,tical aperture 9, which extends from the top of the stud downward through the base-plate 1, and these apertures receive bolts 10, by means of which the meal-pan 11 is secured in position. Said meal-pan is of any approved construction, being in the form of an annular trough resting on top of the studs 7 and secured in position by the bolts 10. It also has an outwardly-extending flange 12 at its lower portion projecting over the master-wheel, so as to prevent the entrance of dust or meal into the oil-reservoir between the pan and master-wheel. It is also provided with an inwardly-extending'flange 13, covering the central portion of the reservoir and having an aperture 14 for the passage of the hub of the central pinion hereinafter referred to.

15 indicates the usual clearer-ring, resting on top of the meal-pan, on which it travels, and having the usual clearers 16 located in the trough of the meal-pan. The meal-pan has the usual discharge-opening 17 in its bottom, which communicates with the dischargeopening 18 in the base-plate 1, surrounded by the upwardly-extending flange 19, forming a closed conduit between the openings 17 and 18 to prevent the escape of the lubricant.

20 indicates a loose central pinion mounted centrally in the reservoir and resting upon the base-plate 1 when not in motion. This pinion meshes with the three pinions 6 and is centered and held in position by them, being, however, free to move vertically under the conditions hereinafter stated. This pinion serves to transmit the motion of the mastergear to the inner grinding-cone in a reverse direction through the mechanism hereinafter set forth.

21 indicates the outer grinding-eone,wl1ich is mounted on the master-wheel 5 and which partalres of its motion. lt is hinged to said master-gear at 22 and secured in position by a locking-nut 23, as set forth in the prior application hereinbefore referred to. lt is provided with the usual grinding-plates 24 and has upwardly-extending converging arms 25,

supporting a central bearing 26. The arms 25 are provided on their under sides with the usual crushing-teeth 27. The outer cone also supports the usual hopper 2S.

29 indicates the inner grinding-cone, having the usual grinding-plates 30, cooperating with the plates 24, and provided on its upper surface with crushing-teeth 3], coperating with the teeth 27. This inner grindingcone is supported. in position on the bearing 26 by having the upper portion of its hub formed into an upwardly-extending clutch member 32, which passes upward through an opening in the bearing 26 and engages with a corresponding clutch member forming part of the hub 33, which rests on the bearing 26. Said hub 33 carries the usual breaker-arms 34 and is rotated by its engagement with the hub of the inner cone` A sleeve 35 extends upward from the hub 33 and has its upper end formed into a bearingeollar 36, on which rests a bearing-wasl1er 37, which receives the handle 3S of an adjustingrod 39. This rod extends downward through the sleeve 35 and hubs 33 and 32 and also through the body of the inner grinding-cone, its lower end being threaded and passing through a nut 40, mounted in the lower part of the hub of the inner grinding-cone. This nut is mounted in a recess 41, extending into the hub from one side thereof, but preferably not through the same, being closed at its inner end by a wall 42, as shown in Fig. l. Said recess is of a height and width slightly greater than the nut, the width being such as to prevent the nut from rotating therein. The nut is slipped into position from the open end of the recess, the wall 42 serving as a stop to limit the inward movement of the, nut, and when said nut is moved in so as to rest against said wall its threaded aperture is in alinement with the apertures fl-3 and '14, through which the lower end ol' the adjusting-rod 39 passes. ln this way the nut may be readily positioned so that the threaded lower end ofthe ad justing-rod may be readily engaged with it in assembling the parts. ,ltotation of the adjusting-rod in one direction will in an obvious manner bring the inner cone closer to the outer cone, while rotation of said rod in the opposite direction will increase the distance between the cones, thus permitting the adjustment of the grindingsurfaces relatively to each other and the controlling of the grinding action.

The pinion 20 is connected with the lower end of the hub of the inner cone by means of a clutch connection which permits separation of the parts, but transmits the rotary motion of the pinion to the cone. To this end the pinion 20 is provided with an upwardly-extending hub 45, passing through the aperture 14 in the bottom llange 13 oll the meal-pan and having two upwardly-extel1ding clutch projections 46 with inclined e11- lOO gaging faces'47. The downwardly-'extend-I ing portion 48of the hub of the inner cone is provided with two downwardly-extending clutch projections 49, having corresponding inclined engaging faces 50. The numberv of vthe clutch projections may of course be va ried; but I prefer to employ two projections `on each of the two engaging' parts. By reason of the/engagement of these 'clutch proj ections rotary movement is imparted from the central pinion to the inner cone in an ob-l vious manner. The inclination of the engaging faces of the clutch members is such that the pinion 20 moves upward when rotated Vand is thus supported out of contact 'with the lbase-plate l while the mill is in operation,

therebyT diminishing the friction and wear on the base-plate.

Of course in opening up the mill by swinging the outer4 cone upon its pivot the central pinion and inner cone will readily separate by reason ofthe clutch connection between them. The inner and outer cones may be readily separated'by removing the adjustingrod 39.

In Figs. 9 and 10 I have shown an embodiment of my'invention'- in a modified form in -which the base-plate'proper is relieved of all wear. In this construction the master-gear,`

which is here indicated by the reference-numeral 51,is provided at its upper portion in the plane of the flange 52, so as to form a ybearing to center the master-gear. With this construction the master-gear does not rest upon the pan, but is supported upon the intermediate pinions, wear ofthe base-plate by the master-gear being thus avoided.

`:Preferably the bearing-aperture of thepinions 55 is made of such a diameter that said ut are supported entirely upon the-bearing- Sleeves 8, as shown in Fig. 10, so that no 'wear of the base-plate occurs from the said pinions. When this construction is employed, thereis no wear of the base-plate whatever, as the wear from the master-gear and intermediate pinions comes entirely upon the sleeves 8, while the central pinion, as already explained, is lifted out of contact with the base-plate when in operation.

It will be readily understood that the cost of renewal of worn parts will be greatly reduced and the lifeof the mill as a -whole greatly increased by my improved construction. Where separate bearmg-studs are employed, as in the construction set forth in the prior application to which reference has hereinbefore been made, the entire stud must be discarded and replaced when slightly worn. Where integral studs are employed uponk which the pinions have a directhbearing, not only the studs but the entire baseplate must be discarded when the studs are so worn as to interfere with thel proper operation of` the mill. In the construction which I have devised no wear of the studs occurs, and the wearing-sleeves may be readily replaced, when worn, at a triiiing expense. The wear of the base-plate may be also reduced to a minimum and entirely done away with'when the construction shown in Figs. 9 and 10 is employed.

I do not wish to be understood as limiting vmyself strictly to the precise details of con-` struction hereinbefore described, and shown in the accompanying drawings, as the same may obviously be modified without departing from the principle of my invention.

Having thus fully described my invention', what I claim as new, and desire to secure by -Letters Patent, isf 1. In a grinding-mill, the combination,

with a base-plate having a marginal iiange which forms an oil-receptacle, said plate being provided with integral bearing-studs, and bearing-sleeves removablyfiitting said studs, of intermediate pinions mounted on said 4bearing-sleeves, an internally-toothed master-gear meshing with said intermediatepinions, and a central pinion meshing with said intermediate pinions, all of said gearing being located within the oil-receptacle, substantially as described- 2. In a' grinding-mill, the combination,

vwith a base-plate having a marginal ilange which forms an oil-receptacle, said plate being provided with integral bearing studs frusto conical in form, and frusto conical bearing-sleeves removably fitting said studs, of intermediate pinions havin bores of similar conformation to fit said s eeves,` and an internally-toothed master-gear and central pinion meshing with said intermediate pin- IOO ions, all of said gearing being located within i the oil-receptacle, substantially as described. 3. In a grinding-mill, the combination, with a base-plate having a marginal iiange which forms an oil-receptacle, said plate being provided with upwardly-extending inte-v gral bearing-studs within said receptacle, Aand said studs being provided with bearingsleeves removably fitted thereon, of inter# mediate pinions mounted on said bearingsleeves, an internally-toothed master gear and central pinion meshing with said intermediate pinions, all of said gearing being located withinthe oil-receptacle, a meal-pan supported on said studs and forming a cover for the receptacle, and securing-bolts passing downward through the meal-pan, studs and base, substantially as described. Y

4. In a grinding-mill of the character de'- scribed, the combination, with a base having itro upwardly-extending integral bearing-studs, 'l

frusto-conical in shape, and bearing-sleeves,

also frusto-eonical in shape, removably itting said studs, the lit being sufficiently tight to prevent the sleeve from rotating on the studs, of pinions having bores of similar conformation, iitting and rotating on said bearing-sleeves, substantially as described.

5. In a grinding -mill, the combination, with a base-plate having upwardly-extending frusto-conieal bearing-studs formed integrally therewith, and bearing-sleeves removably and non-rotatively fitting said studs, of pinions having frusto-conical bores to fit said sleeves, said pinions being wholly supported on said sleeves above and out of contact with the base, substantially as described.

6. In a grinding-mill, the combination, with a base having bearing-studs, and pinions mounted on said studs, each pinion having an upwardly-extending body portion or hub of reduced diameter, of a master-gear encircling said pinions, provided with internal teeth to mesh with the teeth of said pinions, and having above its teeth an inwardlyextending ange which rests upon the teeth of the pinions and bears against the hubs or bodies thereof, whereby said master-gear is centered and supported above and out of contact with the base, substantially as described.

7. In a grinding-mill, the combination, with a base having frustoconical bearingstuds projecting upwardly therefrom, and pinions having truste-conical bores and supported on said studs above and out oi contact with the base, each pinion having an upwardly-extending body portion or hub of reduced diameter, of a master-gear encircling said pinions, provided with internal teeth to mesh with teeth of the pinions, and having above its teeth an inwardly-extending flange which rests upon the teeth of the pini ons and bears against the hubs or bodies thereof, whereby said master-gear is centered and supported above and out of contact with the base, substantially as described.

8. In a grinding-mill, the combination, with a base having rusto-conical bearingstuds extending upwardly therefrom and. formed integrally therewith, of similarlyshaped bearing-sleeves removably fitting said studs, pinions having frusto-eonical bores and rotatively supported on said bearingsleeves above and out of contact with the base, and a master-gear encircling said pinions, provided with internal teeth to mesh with the teeth of said pinions, and havingabove its teeth an inwardly-extending flange which rests upon the teeth of the pinions, whereby said master-gear is centered and supported above and out of contact with the base, and whereby the wear is taken from the base and studs by said removable bearing-sleeves, substantially as described.

9. In a grinding-mill, the combination, with a base having integral truste-conical bearing-studs extending upward therefrom, and similarly-shaped bearing-sleeves removably iitting said studs, of pinions having frusto-conical bores and rotatively supported on said bearing-sleeves above and out of contact with the base, each pinion having an upwardly-extending body portion or hub of reduced diameter, and a master-gear encircling said pinions, provided with internal teeth to mesh with the teeth of said pinions, and having above its teeth an inwardly-extending fiange which rests upon the teeth of the pinions and bears against the hubs or bodies thereof, whereby said master-gear is centered and supported above and out of contact with the base, substantially as described.

10. In a grinding-mill, the combination, with a base, a master-wheel and intermediate pinions carried thereby, an outer grinding-cone, and an inner grinding-cone snpported above the base, of a central pinion meshing with the intermediate pinion and vertically movable, said central pinion and inner cone being provided with clutch membershaving inclined engaging f aces, whereby said pinion is moved up out of contact with the base during the operation of the mill, substantially as described.

11. In a grinding-mill, the combination, with an outer cone having a bearing, a hub mounted thereon, and an adjusting-rod snpported on said hub and having a threaded lower end, of an inner cone having a recess and a passage for the adjusting-rod intel'- secting said recess, and a mit removably litting said recess and held vfrom rotation thereby relatively to the inner cone, said. recess being provided with a terminal wall to cause the nut to register with the passage, substantially as described.

In testimony whereof I allix my signature in presence of two witnesses.

ARTHUR A. AMBLICR.

Iitnesses IRVINE MILLER, GERTRUDE D. YOUNG.

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