US275835A - Roller-mill - Google Patents

Description

(No Model.) 4 Sheets-Sheet 1 D. W. MARMON.

ROLLER MILL.

No. 275,835. I I Patented Apr.17,1883..

Z WITNESSES. 1.7V VEJV TOR.

N. PETERS. Pllolo-Lithngraphur. Washingwn. D c

(No Model.) 4 Sheets-Sheet 2.

D. W. MARMON.

ROLLER MILL.

No. 275,835. m Patented Apr. 17,1883.

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, (No Model.) 7 '4 Sheets-Sheet 3.

D. W. MARMON.

ROLLER MILL.

No. 275,835. Patented Apr. 17,1883.

1.7V VENT OR.

4 Sheets-Sheet 4.

(No Model.)

D. MARMON.

ROLLER MILL.

,835. Patented Apr. 17, 1883.

INVENTOR.

WITNESSES.

N. PETERS. Phm-Lilha mr. wa-hin mn, n. c.

NITED STATES PATENT OFFICE.

DANIEL W. 1VIARlVION OF INDIANAPOLIS, INDIANA, ASSIGNOR TO NORDYKE- & MARMON COMPANY, OF INDIANA.

ROLLER-MILL.

SPECIFICATION forming part of Letters Patent No. 275,835, dated April 17', 1883.

Application filed February 19, 1883. (No model.)

To all whom it may concern Be it known that I, DANIEL W. MARMON, of the city of Indianapolis, county of Marion and State of Indiana, have invented certain new and useful Improvements in Roller-Mills,

of which the following is a specification. My said invention consists in certain improvements in the construction and arrangement of parts in that class of machinery for re the reduction of grain known as roller-mills, whereby a machine is produced having many new and desirable features, as will hereinafter be more fully set forth. I Referring to the accompanying drawings, I: which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure l is a perspective view of a machine embodying my said invention; Fig. 2, a top or plan view of the same; Fig. 3, a side ele- 2o vation thereof as seen from the dotted line 2 2 at the left of Fig. 2; Fig. 4, a transverse vertical sectional view thereof as seen when looking toward the left from the dotted. line y y in Figs. 2 and 5; Fig. 5, a longitudinal vertical sectional view as seen when looking downwardly from the dotted line no :10 in Fig. 2, and to the right and left from the corresponding lines in Figs. 3 and 4, respectively; Fig. 6, a transverse vertical sectional view on the dot o ted line to w in Figs. 2 and 5; Fig. 7, an elevation, on an enlarged scale, of the end of the hopper and the mechanism for operating the feed-gates as seen from the dotted line a o in Figs. 2,5, and 9; Fig. 8, a plan of the mechan- 5 ism seen in Fig. 7 as seen when looking downwardly from the dotted line a u in said figure; Fig. 9, a horizontal section on the dotted line if t in Figs. 4, 5, 6, and 7; Fig. 10, a central vertical section, on a still further enlarged scale, of one of the feed-gate arms on the dotted line 8 s in Fig. 11; Fig..11, a central section on the dotted line 1' r in Fig. 10; Fig. 12, ahorizontal section of one of the arms D on the dotted line q q in Fig. 4, and Fig. 13 a 5 skeleton view of the counter-shaft and an alternateconstruction of the mechanism for adjusting the same.

In said drawings the portions marked A A represent the supporting frame-work of the mill; B B, the hopper and other covering portions; 0 G G G, the grinding-rolls; D,

swinging arms in which one of each pair of rolls is mounted; E, adjustable boxes mounted on said arms; F, tempering rods or screws for adjusting the maximum force of the grinding pressure; G, distance or adjusting rods for regulating the position of the arms; H, a bar passing through the machine and connecting the two pairs of said rods; I, a cam device for operating said bar; J, the feed-gates; K, shafts for operating them; L, a bar for operating saidshafts; M, a counter-shaft; N, adjustable devices wherein the boxes for said shaft are mounted; O, the rods whereby said devices are adjusted; P, the shaft whereby said rods 6 are connected; andthe numerals 1 to 16, inelusive, the several pulleys and belts by which the machine is driven. I

The frame A A is mainly a large hollow casting adapted to support the machinery of a roller-mill, and is substantially a well-known form. Spout-like projections on the sides of this frame form openings into the sides of the mill. Other projections or lugs are formed I upon or attached thereto, and serve as supports or bearings for various portions of the mechanism.

The hopper and covers B B are preferably constructed of wood. The hopper B is intendcd to be substantially stationary. The covers B are removable in the ordinary manner, so that the grinning-rolls may be removed without disturbing the hopper.

The several rolls 0 C O C are the crushing or grinding rolls common to roller-mills. 8 They are respectively mounted upon the shafts c c 0 c and are driven by the pulleys 1 2 3 4. the first and third by the main beltl2, running under the pulley 5 on the counter-shaft M, and the second and fourth by separate belts c 13 and 14, running from the pulleys 6 and 7 on said counter-shaft to said pulleys 2 and 4. It is essential that the two rolls of each pair have their axes in the same plane; but from unequal wear ofjournals, journal-boxes, or other 5 causes they may after use vary from this plane.

To correct this Variation from a common plane, I raise or lower the journal-boxes of either one or the other roll. As the arms D have only a movement substantially to or fromv the fixed ro-o roll, the boxes E are adjustably secured thereto, so that the roll may be moved up or down on this arm, as will be presently more fully described.

The arms D are mounted upon pins (1, which pass through their lower ends and through lugs or bosses on the frame A. The holes in these arms through which said pins pass are elongated, (see particularly Fig. 4,) which allows the arms to move slightly on said pins, or, in other words, permits the lower ends of said arms to be crowded outwardly somewhat by the roll supported thereby, when necessary, as in case a substance too hard. to be crushed or ground should come between said roll and its fellow.

The boxes E have bearing-surfaces c, which rest against similar surfaces on the arms D. They are secured in position by the bolts e, which should be set at an angle, as shown, and are adjusted vertically by the cams e*, which are journaled in said arms and support said boxes. A set-screw, 6 is inserted in each arm in such position as to bear against a journal of the cam therein, and said cams, after being adjusted to the desired position, are secured from turning by screwing these setscrews tightly against said journals, as shown in Fig. 12. When the box has been adjusted to the desired position it is secured against further movement by tightening up the bolt which forces said box tightly against its seat, and also against the cam 0 The adj ustable boxes might be placed on the frame-portion A, if desired, and the rigid boxes on the arms D, without departing from myinvention, so long as the means of adjustment remain substantiallythe same.

The tempering-rods F pass through the lower ends of the arms 1)., below or beyond their pivots, through alugor projection on the frame or casting A, and through a coiled spring, F.

One end ofea ch of said rods is screw-threaded, and bears the hand-wheel'F thereon.

The adjusting-rods G are for the purpose of moving the upper ends of the arms D back and forth, and thus bringing the individual rolls of the pairs nearer to or farther from each other. Each is preferably pivoted at its inner end to a bell-crank lever, G, by a pivot, g, and is provided at its outer .end with a handnut, 9 and a hand set-nut, 9 The bell-crank levers are pivoted to the castings A by pivots a, and their inner ends enter notches in the bar H, and are moved by said bar as it is moved back and forth. The arms D are adjusted inward or back by turning the handnuts 9, and the rolls supported by said arms are thus positioned nearer to or farther from their fellows.

The bar H passes through from end to end of the machine and connects all the bell-crank levers G, so that they can be moved simultaneously. The forcing of this bar back and forth swings the bell-crank levers G on their pivots, and thus operates to throw the rods G and arms D inwardly and outwardly, thereby varying the distance between the individual rolls of the several pairs at one operation. The purpose of this is to move the rolls back from grinding relation, and then return them to exactly their former position without the delay and trouble incident to a readjustment of the machine.

The device I is journaled vertically in bearing in the castings A, and has a cam formation, '11, upon its lower end, which enters into an orifice in the bar H, (see Figs. 4, 5, and 9,) and thus when turned forces said bar back and forth. It is provided with a crank or handle, I, by which it is operated. As this handle moves back and forth, its inner end engages with the catches l on the bar L, and thus through said bar also operates the feed-gates.

The feed-gates J are thin blades which run along near the feed-rolls J, and each has upwardly-projecting armsj and j. One of these arms, j, on each gate engages with a projection, 70, on the corresponding shaft K, (see Fig. 6,) and the gate is thus raised and lowered by the partial rotation of said shaft. The other arms, j, are arranged to come in contact with stops j", and the gateis thus thereby prevented from opening too far. These stops arepreferably-in the form of thumb-screws, as shown, so that the distance to which the gates may open may be adjustably regulated. Each of the armsj has preferably a barrel,j upon its upper end, in which is a spring, j, having a cap against which the stop j rests, there being a hole in the upper end of the barrel, through which the lower end of the stop passes. This spring is quite stiff, so that it holds its cap firmly against the upper end of the barrel, except when forced down, in the manner which will now be described. In practice it frequently occurs that some substance gets between the feed-gate J and the feed-roll that will not pass through, but remains there, ob structing the proper feeding. To let this substance pass through, it is desirable to raise the feed-gate temporarily. To do this, and also return the feed-gate to its exact former position without a readjustment, .I provide the yielding contact-surfaces for the stops by means of the springs j, or such known equivalent therefor-as a weight-as may be desired. These yielding surfaces are held in their fixed positions with such aforce that in the action of the machine itself they are rigid surfaces or stops; but when it is desired to raise the feed-gate higher temporarily it can be done by pressing on the arm K sufficiently to, overcome the force of the spring j, thus raising the feed-gate J. On removing the pressure from the arm K, the feed-gate is returned to itsformer position by the action of said springs returning to their former position against the upper ends of the barrels j. The feed-rolls J are driven toward the feed-gates by the arrangement of belts shown in Fig. 3, and hereinafter described.

The shafts Khave upon them, preferably at or near their centers, the projections k which erases a engage with the armsj on the feed-gates, and are thus adapted to open said feed-gates or allow them to close as said shafts are partially rotated in one or the other direction. These shafts have arms K, theweight of which operates to rotate the shafts in one direction.

K are rotated in one direction and the feedgates thereby closed. When it is desired that the feed-gates shall he closed the bar L is moved so that the project-ions i shall come in contact with the arms K, which raise the latter, thereby partially rotating the shafts K and causing the feed-gates to descend. When it is desired that the feed-gates shall be open the bar L is moved in the reverse direction, and the weight of the arms K partially rotates the shafts K in the other direction and opens the gates, as hereinbefore stated, the handle 1 is preferably extended so as to come in contact with the catches l l on this bar, whereby the feed-gates are opened or closed by the same movement that throws the grinding-rolls toward or from each other. In order that this operation shall not be prevented by the independent working of the bar L, the catches l l are pivoted so as to swing freely toward each other,-"whereby,the end of said handle I can pass between said catches at'any time without regard to their positions and without moving said bar. In its movement from side to side the inner end of said handle comes in contact with one of said catches, lifts and passes under it, when said catch will dropinto the position shown most plainly by Fig.7, and the handle canuot then he moved withoutmoving the bar L, said catches being prevented from swinging outwardly by a small lug or projection, l attached to the bar directly behind each of them. When said handle is swung around to thelimit of its movement, as shown most plainly in Fig. 8, it is entirely free from the catches, and the bar can be moved back and forth entirely independently of said handie.

The counter-shaft M is mounted in boxes M, which are in turn mounted in or form part of the adjustable devices N. When this shaft is raised or lowered it loosens or tightens the several belts employed to run the grinding-rolls, as will be readily understood by an examination of the drawings. As will also be readily understood, this counter-shaft runs in the opposite direction from that in which the rolls 0 0 run, 'and thus drives the rolls 0 0 also in the opposite direction to said rolls 0 0 This causes the adjacent faces of the individual rolls forming each pair to run in the same direction, instead of oppositely, as would be the case if the rolls themselves ran in the same direction.

The devices N are formed to carry the boxes shown in Fig. 13, if desired, instead of separately, as shown in the other figures.

The rods 0 run vertically through hearings in the castings A and A being suspended from the latter by means of a collar, 0, which may or may not he a part of the gear-wheels 0. They are screw-threaded at their lower ends, and enter the upper ends of the devices N, which are also screw-threaded to receive them. These rods are thus adapted to raise and lower said devices N. r

The shaft P extends through the machine from one end to the other, just above the upper ends of the rods 0. It has gear-wheels P thereon, which engage-with the gear-wheels O" on said rods 0, and is thus adapted to turn both said rods and raise or lower both the devices N simultaneously. Instead of this shaft P, a chain or other belt maybe used to connect the screw-rods O, as in the alternate construction illustrated by Fig. 13.

The several pulleys and belts operate as follows: The main belt 12 drives the pulleys 1, 3, and 5, and thus the rolls 0 and (J in one direction and the counter-shaft M in the other direction. The counter-shat't, through the pulleys 6 and 7 and belts 13 and 14: running therefrom to the pulleys 2 and 4, drives the rolls 0 and b in the opposite direction to that in which the rolls 0 and O are driven. The roll 0 has on its shaft the small pulley 8, which, through the belt 15, drives the pulley 9, one of the feed-rolls J, and the pulley 10 on the same shaft therewith, and this pulley 10,

through the belt 16, drives the pulley 11 and the other feed-roll.

The various principal operations of my said invention may be recapitulated as follows:

The grain is fed through the hopper by means of the feed-gates Jand feed-rolls J to the grinding-rolls, which reduce or grind it in the ordinary manner. These rolls are adjusted vertically by the movement of the boxes E on the arms D and laterally by the adjusting-rods G. When it is desired to vary the relations of the rolls it may readily be accomplished by turning either the cams e or the hand-nuts 9 or both,accordingto the variation desired. When it is desired to temporarily part the rolls (thus stopping the grinding) and shut 0d the feed, it is done by moving the dcviceI by means of the handle 1, which operates the bar H, which in turn, through the the bell-crank levers G, operates the rods G, and thus permits the arms D to move back and the rolls to part. Theinner end of the handle I at the same time operates the bar L, which lifts the arm K, thus partially rotating the shafts K, and causing the gates J to close down against the feed-rolls J and shut off the flow of grain. A reversing of this motion brings all of said parts back into exactly their former position, and the grinding proceeds. Should any foreign substance clog either of the feed-gates, said gates may a part of said surfaces, operate to return said gates to position as soon as the pressure on the arms K is relieved.

Some of the devices and combinations shown and described herein are the invention of Jesse Warrington or the joint invention of WVarrington and myself. They are therefore of course not claimed in this application; but are made the subject-matter of other applications for Letters Patent.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, in a roller-mill, of the arms D, the rods G, the bell-crank levers G, the connecting-bar H, and means for operating the same, substantially as shown and specified.

2. The combination of the arms D, the armoperating rods G, the bar H for connecting said rods, and the device I, having cam-shaped portion i, whereby said bar is given a reciprocating movement, and said rods are all operated simultaneously, substantially as set forth.

3. The combination, in a roller-mill, of the swinging arms D, the rods G, the bell-crank levers G, and the bar H, said bell-crank levers being pivoted to the frame-work by pivots a, and to said rods by pivots g, and connected together by said bar, as specified, whereby a movement of the long arms thereof at opposite ends of the same roll in the same line and same direction acts to move the rods G and arms D at opposite ends of the same roll simultaneously to or from the fixed roll, substantially as set forth.

4. The combination, with the hopper and feed-gate, of the stops j and the arms 9", the surfaces whereofcome in contact and are in effect non-yielding during the normal action of the machine, but which are constructed to yield upon the application of additional force and to return to their normal position when said additional force is withdrawn, substantially as set forth.

5. The combination of the hopper, the feedgate, its arms 7" having springs j, the stopsurfaces, and stops j, substantially as described, and for the purposes specified.

6. The combination, in a roller-mill, of the frame-work, the roll'shafts, the counter-shaft, belts connecting pulleys on the same, the journal-boxes of said counter-shaft, screw rods or shafts connecting said journal-boxes to supporting-bearings on said frame-work, means for connecting said rods or shafts together, and means for driving the same, whereby said screw-rods may be simultaneously operated, and said counter-shaft thus moved nearer to or farther from the roll-shafts, substantially as described, and for the purposes specified.

7. The combination, with the counter-shaft M, of an adjusting mechanism consisting of the devices N, the rods 0, and mechanism connecting said rods together, whereby they are operated simultaneously, all substantially as set forth.

8. The combination, with the counter-shaft M, of an adjusting mechanism consisting of the devices N, the rods 0, and the shaft P, said rods bearing gear-wheels 0, and said shafts bearing gear-wheels P, whereby they are connected together and thus adapted to be operated simultaneously, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 12th day of February, A. D. 1883.

DANIEL W. MARMON. 8.]

In presence of O. BRADFORD, E. W. BRADFORD.

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