US775068A - Pulverizer. - Google Patents

Description

No. 775,068. PATENTED NOV. 15, 1904.

A. RAYMOND, DEGD.

M. M. BABTELMB. ADMINISTBATBIX.

PULVERIZER.

APPLICATION FILEDvLIyJaL No MODEL. '"-J a sums-snm 2.

No. 775,068. PATBNTED NOV. 15, 1904. A. RAYMOND, DBCD.

M. M. BARTELME. ADMINISTRATRIX.

PULVERIZBR.

N0 MODEL. 3 SHEETS-SHEET 3.

No. 775,068. Patented November 15, 1904.

UNITED ISTATES yPATENT OFFICE.

ALBERT RAYMOND, OF CHICAGO, ILLINOIS; MARY M. BARTELME ADMIN- ISTRATRIX OF SAID RAYMOND, DECEASED.

PULVERIZER.

SPECIFICATION forming part of Letters Patent No. 775,068, dated November 15, 1904.

Application filed June 23, 1900. Serial No. 21,280. (No model.)

T @Il Wfl/07W it "my CUYLGWHI l of Fig. 2, and Fig. 7 is a detail view of one 5C Be itknown that I, ALBERT RAYMOND, a citiof the adjusting-slums. Zen of the United States, residing at Chicago, Similarletters of referenceindicate the same in the county of Cook and State of Illinois, parts in the several figures of the drawings. haveinvented certain new and usefullmprove- Referring by letter to the accompanying' ments in Pulverizers, of which the following drawings, A indicates a sheet-metal easing of 55 is a specification. any suitable shape mounted upon a base B,

rIhis invention relates to improvements in upon which is also mounted at each side of pulverizers especially designed for reducing the casing pillow-blocks C, which afford at IO cement and light commodities, and has for its their lower ends a bearing for the drivingprimary object to produce a simple, effective, shaft D and at their upper ends a bearing for 60 and cheap machine of great capacity, yetwhich the driven shaft E, the lower bearing being a requires comparatively small power for its optixed bearing and the upper bearing being aderation. justable, as explained farther on. I5 Another object is to have the g'rinding-roll- Mounted rigidly upon the driving-shaft D,

ers of such character that but one of them is to which power may be applied by the pulley 65 power-driven, the other being' driven from the F or in any other convenient manner, is the lirst-mentioned roller by friction induced by driving-roller, made up of the hub G, the disks the weight thereof, whereby the rollers will H at each end thereof, the grinding-ring' I, fitautomatically accommodate themselves to vating snugly upon the hub between the disks,

riations in the character of the material, as and the bolts J, passing through the hub and 70 well as pass through fractious material withthrough each of the disks, so that the roller out injury to the rollers. may be readily separated and a new grinding- A further object is to have the grindingring substituted for an old worn one without rollers so that they may be quickly and cheaply loss of time or any other material than that repaired and the grinding-surface renewed of the old ring. The disks H extend beyond 75 without the loss of the entire roller. the periphery of the grinding-ring I, and the A still further object is to have the driven grinding-disks N fit therebetween. Thus, as roller composed of independent sections freely will be readily understood, the material being mounted, so that any one or more sections crushed will be prevented from escaping from thereof may move radially toward and away the lower roll. 8o 'from the drivingroller` whereby lumps or Mounted upon the driven shaft E, which infractious material may lift and pass by one stead of being immediatelyabove the drivingsection of the driven roller without affecting' shaft is located out of Vertical alinement therethe operation of the other sections thereof and with, is the driven roller, made up of the hub also without undue strain upon the shaft sup- K, the disks L at each end thereof, the bolts 85 porting the driving or the driven roller. M, passing through the hub and both of the These and such other objects as may heredisks L, binding them tightly together,and the inafter appear are attained by the devices roller proper, composed of aseries of disks N,

40 illustrated in the accompanying' drawings, in arranged side by side and each having apwhichplied to the periphery thereof a grinding-ring 9o Figure l represents a sectional elevation of O of the same thickness as the disks N. It

a pulverizer embodying my invention. Fig. will be noted that the combined thickness of 2 is a vertical section on the line 2 2 of Fig. the disks N is slightly less than the distance l. Fig. 3 is a detail perspective view of a between the inner opposing' faces of the disks hub of one of the g'rinding-rollers. Fig. -l is L, so that the disks N are not clamped be- 95 a face view of one of the hub-anges. Fig'. tween the disks L, but, on the contrary, are 5 is a vertical section on the line 5 of Fig. free to move with relation to each other; but Q. Fig. 6 is a vertical section on the line 6 6 such movement is intended to be practically all radial, as the axial or lateral movement thereof should be no more than sufficient to allow a free radial movement. It will also be noted that each of the disks N has a central circular hole P of somewhat greater diameter than the hub K, and by reason of the relative diameters of the driving and driven rollers and the distance between the axes thereof the driven rollers at all times rest upon the driving-roller and have only one point of contact with the hub K, as at Q in Fig. 5. This point of contact between the driven roller and the hub K will of course change slightly as the shaft E, carrying the hub K, is adjusted toward and away from the driving-shaft D, provision for such adjustment being illustrated in Fig. l, in which the fastening-bolts R of the bearing-block S of the shaft E pass through elongated slots T in the pillow-blocks C. Between the lower end of the bearingblock and a shoulder on the pillow-block is inserted a series of shims U, which are cut away at one side, as clearly illustrated in Fig. 7, to embrace the steadying-bolt V, which passes through the bearing-block S at right angles to the bolts It and through the shoulder WV on the pillow-block, so as to aid the bolts R in holding the bearing firmly in any adjusted position. Obviously by the insertion or removal of any number of shims the position of the bearing-blocks S, and consequently of the shaft E, may be readily adjusted so as to allow a greater or less rise of the driven roller away from the driving-roller, according to the character of the material being operated upon. As above pointed out, the rollers are out of vertical alinement, but with their axes parallel. In actual fact, as shown in the drawings, Fig. 5, the center of gravity of the Lipper roller falls without the periphery of the lower roller; but this relative arrangement may be varied as desired. There'is a distinct advantage arising from the fact that the rollers are out of vertical alinement. This advantage consists in providing a force exerted in opposition to the rotating movement of the upper roller due to the frictional contact. This force is the weight of the roller itself, which weight normally tends to move the roller in a direction contrary to that indicated by the arrow in Fig. 5; but as it also tends to bring the periphery of the roller into closer contact with the periphery of the lower roller a closer frictional contact is obtained, thus making it possible to obtain a greater crushing effect without placing additional strain on the driving-shaft. Y

The purpose of having the driven roller made up in disk-like sections is to give greater freedom at different points along the grinding-surface, according to the exigencies arising at any particular point along the surfacesuch, for instance, as the feeding in of a lump or lumps of fractions material which the rollers cannot crush or pulverize. In such case only that section of the driven roller which comes in contact with the fractions material will back oli' away from the driving-roller, so as to allow the fractions material to pass through, the remaining` sections of the roller continuing at work as before. This arrangement makes each and every section of the driven roller independent of all the other sections, yet working in harmony and in unison therewith, except when occasion demands that it shall give way for the passage of obstructing material. In dotted lines in Fig. 2 I have shown the two right-hand sections raised or backed off from the driving-roller, the same effect being shown by dotted lines in Fig. 5.

In operation the driving-roller is continuously rotated, while the driven roller depends for its rotation upon the friction resulting' from the grinding of the material between the meeting surfaces of said rollers, Fig. 5 clearly illustrating the operation of the machine and showing a feed-hopper X at one side of the casing delivering the cement or other material through the periphery thereof into the jaw between the rollers, an agitator Y being also shown in the hopper to assist in the feeding and prevent clogging thereof. The action of the grinding-rollers is such as to reduce the lumps of cement to an impalpable powder, in which form it flows off of theoppositeside of the grinding-rolls, which turn in the direction indicated by arrows in Fig'. 5, and no unground product can pass between the rollers, except such substances as are sufficiently fractions to resist the crushing effect of the driven roller, and in such event such material will pass through without injury to the machine or straining the shafts or bearings thereof.

A pulverizer constructed in accordance with my invention has great capacity, because the operation thereof is exceedingly rapid, the rollers are continuously at work upon the material, while the grinding action tends to constantly draw in fresh material, though only as rapidly as the rollers can take care of it.

Obviously various modifications in the construction and arrangement of the parts' of my machine may be made without departing from thespirit of myinventionv-suclnforinstance, as varying the number of sections of the driven roller or the manner in which the sections are secured together and adjusted, and, indeed, it would be no departure from the broad idea of my invention to have the driven roller solid or formed in one piece so long as the roller is capable of bodily radial movement toward and away from the drivingroller without moving the shaft of the driven roller with it, and allsuch changes are contemplated by my invention.

Having described my invention, what I claim, and desire to secure by Letters Patent,

l. In a pulverizer, the combination with a TOO driving-roller,of adriven roller normally resting upon and rotated by frictional contact with the driving-roller, said rollers being' out of vertical alinement, said driven rollers comprisinga plurality of disks each havinga central bore, a hub of less diameter than the bore of the disks on which the disks are mounted and have independent radial movement,said hub having longitudinally-arran ged bolt-openings, disks of smaller diameter than the disks forming the said roller arranged at opposite sides of the latter, and bolts passed through said smaller-diameter disks and the bolt-openings in the hub, substantially as described.

In a pulverizer, the combination with the driving-roller, of a driven roller composed of a plurality of disks, a grinding-ring mounted on each of said disks, a hub on which the disks are loosely mounted and have radial movement independently of each other, a shaft on which the hub is mounted, disks mounted on the said shaft and engaging the ends of the hub, and tie-bolts passing through the said disks and hub, substantially as described.

3. In a pulverizer, the combination with the driving-roller, of the driven roller foi'med with a central bore, a shaft extending th rough the said central bore of the said driven roller, a hub mounted on the said shaft and being arranged within the bore of the said driven roller, said hub being of smaller diameter than the bore of the said driven roller, and being formed with a series of longitudinal openings, bolts arranged in the openings of the said hub, and disks mounted on the opposite ends of the said bolts, substantially as and for the purpose specified.

4. In a pulverizer, the combination with a d rivi ng-roller, of a driven roller normally resting upon and rotated by frictional contact with the driving-roller, said driven roller being' composed of a plurality of disks, each formed with a central bore, of a shaft extending through the central bores of the said disks, a hub mounted on the shaft, the bores of said disks being greater in diameter than the diameter of the said hub, and disks removably secured to the outer ends of the said hub.

5. ln a pulverizer, the combination with the driving-roller, and disks, of greater diameter than the roller, secured to its opposite sides, of a driven roller composed of a plurality of disks each having a central bore, said disks normally resting on the said d riving-roller between the said first-named disks, a shaft extending through the bores of the disks, a hub, and disks secured to the outer ends of the said hub, substantially as described.

6. In a pulverizer, the combination with the frame including pillow-blocks provided with rearwardly-inclined upper ends and having outwardly-extending shoulders at the lower ends of said inclined portions, a positivelydriven shaft journaled in the pillow-blocks, a roller mounted on said shaft, bearing-blocks mounted upon the said inclined portions of the pillow-blocks, a shaft journalcd in said bearing-blocks, a roller mounted on said shaft and driven by frictional contact with the firstmentioned roller, securing bolts passing through said bearing-blocks and through slots provided therefor in the inclined portions of the pillow-blocks to permit the adjustment of said blocks, and steadying bolts passed through the bearing-blocks and through the outwardly-extending lugs of the pillow-block at right angles to the securing-bolts, substantially as described.

T. In a pulverizer, the combination of a pair of pillow-blocks formed at their upper ends with inclined portions, and having outwardlyextending' shoulders at the lower end of said inclined portions, bearing-blocks mounted on said inclined portions, securing-bolts passing through said bearing-blocks and through slots provided therefor in the inclined portions of the pillow-blocks to permit the adjustment of said bearing-blocks, steadying-bolts passed through the bearing-blocks endwise thereof and through the outwardly-extending lugs of the pillow-blocks, means on said steadyingbolts for holding the blocks in their adjusted position, a shaft journaled in the bearingblocks, a roller mounted on said shaft, a driveshaft journaled in the pillow-blocks, and a roller on said drive-shaft coacting with the first-mentioned roller.

ALBERT RAYMOND. Witnesses:

M. E. SHIELDS, J. E. HALLENBECK.

Images