US1037232A - Pulverizer. - Google Patents

Description

E. H. FRICKBY.

PULVERIZBR. APPLIGATION FILED JUNBQ, 1910.

1,037,232, i Patented Sept. 3, 1912.

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PULVERZER.

APFLIGATION FILED JUNE 9, 1910,

Patented Sept. 3, 1912.

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E. H. FRICKEY.

PULVERIZER.

APPLICATION FILED JUNE 9, 1910.

1,037,232. Patented s@pt.3,191.2.

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vw:EDWARD H. FRICKIEY, OF ST. LOUIS, MISSOURI, ASSIGNOR TO WILLIAMS PATENT CEUSHER ANI) PULVERIZER COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

PULVERIZER.

Application filed .Tune 9, 1910. Serial No. 565,949.

To all whom t may concern.'

Ile it known that I, EDWARD H. FRICKEY,

a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Pulverizers, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it apporta-ins to make and use the same, reference being had to the accompanying' drawings, forming part of this specification, in which- Figure 1 is a side elevational view of my improved pulverizer partly in vertical section. partly in vertical section. Fig. 3 is a top plan view partly in horizontal section.

This invention relates to a new and useful improvement in pulverizers, and more particularly to the means for adjusting the grinding surface with respect to the hammers or beaters.

This invention consists in the construction, arrangement and combination of the several parts, as will hereinafter be described and pointed out in the claims.

In the drawings, 1 indicates a casting which is preferably anchored to suitable timbers 2 constituting the foundation or support. This cast-ing constitutes a casing, inthe peripheral wall of which are arranged two manhole plates 3 by which access may be gained to the interior. The outer part of the casting is provided with an opening, in which is arranged a removable casting 4 constituting a support for a screen frame 5 containing a wire mesh. covering the discharge opening.

6 indicates a flanged ring cooperating with the screen frame to hold same in its seat, said ring in turn being held in position by blocks 7 adjustably secured in position by means .of threaded bolts 8, said blocks being loosely mounted on said bolts 8 so thatby turning the screws 9 the inner ends of said blocks may be forced downwardly to tighten the clamping ring 6 in position.

10 is the discharge spout, which is preferably connected to an exhaust fan or blower. l

To renew the screen, it is only necessary to loosen the bolts 9, to swing the blocks 7 on the bolts 8 and raise the flanged ring 6, whereupon the screen may be removed. If

Fig. 2 is an end elevational View Specification of Letters Patent.

Patented Sept. 3, 1912.

necessary, the pipe 10 may also be raised for the same purpose. The casting +L which supports the screen frame is mounted to move in vertical guideways and provided with ribs 11 fitting in said guideways, said ribs having their lower ends beveled, as shown in Fig. 2.

12 is a bar having a beveled inner end to cooperate with the ribs l1, whereby, when clamping ring G is not firmly secured in position, the bar 12 may be adjusted inwardly and outwardly to adjust the screen with relation to the paths of travel of the revolving beaters by means of bolts 12a secured in the casing. Bar 13, having a vertical inner face, is also made adjustable inwardly and outwardly by means of a threaded bolt 13EL secured in the casing for clamping the screen in its vertically adjusted position. Bars l2 and 13 are duplicated on each side of the screen, the bars 12 serving to support'the casting 4 and its carried screen, while the bars 13 serve to clamp the same in position. The clamping blocks 7 force the flanged screen and associate parts downwardly. To adjust the screen downwardly, it is only necessary to loosen the bolts 12, to move the bars 12 outwardly, and tighten the clamping blocks 7. To adjust the screen upwardly, the clamping blocksv 1are first loosened, then the bolts 12a rotated so as to move the bars 12 inwardly. Bolts 13a, which move the bars 13 inwardly and outwardly, may be turned to clamp and unclamp casting 4.

I do not claim in this application the mechanism for adjusting the screen as described above, as this forms the subject matter of 'a divisional application tiled by me October 29, 10, and numbered 589,827.

Preferably, the bars 12 which control the position of the screen, have no connection with the ring bars which are used for adjusting the grinding surface, but they form segments thereof, being mounted in the concentric grooves 1a inside the casing con taining said grinding surface. The rings for adjusting the grinding surface bars are oppositely inclined on their adjacent edges, and are movable inwardly and outwardly by means of bolts, in the same manner as the bars 12 and 13. The grinding surface is practically composed of bars 14.- having Y proper distance,

serrations on their inner faces, the ends of said bars being oppositely beveled, as shown in Figs. 2 and 3. The outer rings 15 are made adjustable inwardly and outwardly by means of bolts 15a, while the inner rings 16 are made adjustable inwardly and outwardly by means of bolts 16a. By moving the outer rngsinwardly and the inner rings outwardly, the bars are adjusted toward theA Vthe beaters are new and the points not worn,

is positioned with the rings 16 in their innermost position and the rings 15 in their outermost position. As the beaters wear, the rings 15 are adjusted inwardly after retracting the rings 1G. The retracting movement of lthe rings 16 controls the adjustment of the grinding surface, which, it will be observed, by moving the rings 15 and 16 in opposite directions, is eected in a positive manner both toward and froln the beaters.

ln order to positively move rings 15 and 1G inwardly, so as to make it unnecessary to rely upon the inward movement of companion ring for effecting such adjustment, I provide set screws 15b and 1Gb, which preferably alternate with the bolts 15a andV 16a. By this construction, when it is desired to adjust either ring 15 or 16 outwardly, the set screws 15b 'and 1Gb are loosened the and then the bolts 15l and 1Ga tightened so as to draw the ring outwardly against theset screws. When it is desired to adjust the rings 15 or 16 inwardly, the bolts 15a and' 16 are first loosened and then the set screws tightened up. The Set screws 15b and 1G" are preferably threaded in the casting, while the bolts 15ri and '16a are threaded in the rings and pass loosely through the casting.

A strap or bandl7 is arranged under the grinding surface at approximately the nuddle portion of the lbars to support the same, and this strap, which is sufficiently flexible to conform to the various adjustments of the grinding surface, has its ends supported by threaded rods 18 whose ends pass through the casting 1 and receive nuts for adjusting said strap.

19 is a shaft mounted in suitable bearings arranged vin extensions projecting from the sides of casting 1, Ywhich extensions are covered by cap plates 20bearing thel partition walls provided in the extensions, whlch, with machine.

ydrawn "through thegpi'pes 41 fpassesjdown'f the cap plates, constitute anoil receptacle for lubricating the shaft in its bearings, by means of the usual slip rings. A screw 21 is rovided to aline the shaft bearings. A. driving pulley 22 is arranged on the end of the shaft, and if desired, a balance wheel can be arranged on the opposite end of said shaft.

Within the casting l, the shaft has head plates provided with fan blades 23, which tend to draw in air and material from each side of the machine and force the same toward the center of its zone of beaters. The material is fed into t-he eye of the machine around the shaft at each side through conduits 24, which conduits terminate at the extensions and adjacent to the partition walls thereof which form the oil recept-acle. These conduits lead from under a feeding mechanism comprising a pocket cylinder 25 arranged in a suitable easing at the lower end of a discharge pipe 26. An adjustable f wall 27 in said casing determines the amount of material passing beyond the cylinder25. When the wall is close to the cylinder 21, only the material which can enter the pocket is fed to the machine, whereas, by adjusting the wall 27 outwardly, an additional quantity of material will be fed to the machine. The outer end of the'shaft ofthe pocket cylinder is provided with a ratchet 28, with which cooperates. a pawl 29 carried by an arm 30 provided with a T-groove, in which vis adjustably mounted one end of an eccentric link 31. An eccentric 32, with its usual strap, to which link 31 is connected', is mounted on a counter shaft 33, whose pulley 3l is driven by a belt 35 fastened around a pulley 36. A conjoined pulley 37 is drive-n by belt 38 which passes over shaft 19.

39 is aV pocket or receptacle arranged directly under the pocket feed cylinder Vfor the purpose of catching particles of iron or other foreign material too heavy for the air entering through dampers 40, arrangedY at the end of said receptacle, to earry'into the Y Auxiliary air supply pipes 41, controlled by dampers 4t2, lead into the feed Vopenings at the eye of the machine on side, for the purpose of affording beteach ter control of the amount of material fed` into the machine. These auxiliary air Vsupply pipes 42 lead from the bottom of the machine and tend to keep the same clear from dust or pulverized materialescapingY 120 through the cracks in the bars of the grinding surface and which might tend to accumulate under the grinding surface. The

space under 'thev grinding surface fform's @j a receptaclefor catching materialsinvthe mana: ner described, and is therefore preferably Y housed in, but, asshown iinlig 1,1: thisispace communicates with` the Y exterior?` 7around .the` flanged ring `6. By'lthis'constructionaain '130 tvardly around the bars of the grinding surface and draws all flying particles of dust escaping therefrom back into the machine, whence it will be discharged through the pipe 10.

Beatcrs 43, which cooperate with the grinding surface and art upon the material in the machine to reduce the same to pulverulent form, are preferably constructed by giving to said beaters a quarter turn, whereby the major axis of their outer ends lies substantially parallel to shaft 1S). In this manner these beaters act as paddles. The outer flat. ends of the beaters are curved forward and provided with cutting edges, which are pieferably sharpened. The beaters are mounted between supporting disks 45, and have extensions 43a which coper ate with the hubs of said disks to prevent the beaters from falling forward, when the machine is at rest, and dulling their edges. These extensions do not interfere with the rearward yielding movement of the beaters in operation.

The operation of the machine in reducing material to powdered form is as follows: The material to be reduced is supplied to the feed pipe 2G and fed in predetermined quantities to the machine. The machine being in operation, fan blades 23 serve to draw the material, With air, into the machine, through the feed openings around the shaft 19, said feed openings acting in this particular like the eyes of a fan. Fan blades 23 tend to throw the material toward the center of the zone of revolving beaters. Centrifugal force tends to throw the material outwardly against the grinding surface. The curved fiat blades of the beaters tend to pick up the material from the grinding surface by a sceoping action and return the material toward the center of the machine in opposition to the direction in which the material is inclined to move under centrifugal force. The material is thus reduced, not only by contacting with the grinding surface and the beaters, but by attrition, the oppositely moving particles rubbing against each other, so that ultimately they are of sufcient fineness to be passed through the screen and into t-he discharge pipe l0, which is preferably connected to an exhaust fan. The passage of the materialthrough the screen and the action of the beaters in tending to wipe the material off this screen, is similar to that of the Well known Griffin mill, the line particles of material being bolted diagonally.

I am aware thatI minor changes in the construction, arrangement and combination of the various parts of my device can be made and substituted for those herein shown and described Without departing from the nature and spirit of my invention.

I do not claim the construction and arrangement of the hammers or beaters, the

side feed, the feeding mechanism, or the manner of controlling the supply or exhaustion of air to effecty the discharge of material from the machine, as the same is the invention of Milton F. \Villiams, and forms t-he'subject matter of a companion application filed of even date herewith.

I claim:-

l. In a pulverizer, the combination of a casing, a grinding surface arranged therein comprising sections, means for supporting each section comprising a member engaging the top of said section, means for adjusting said member, an independent member en gaging the bottom of said section, and means for adjusting said last mentioned member, said adjusting means being adapted to adjust the section toward and from the center of the casing and to clamp said section in adjusted position.

2. In a pulverizer, the combination of a casing, a grinding surface arranged therein, comprising sections, means for supporting each section comprising a member having a beveled side engaging the top of the section, means for adjusting said member, an independent member having a beveled side engaging the bottom of the sect-ion, and means for adjusting said member, said adjusting meansv being adapted to adjust the section towardVV and from the center of the casing and to clamp said section in adjusted position.

3. In a pulverizer, the combination of a casing, a grinding surface arranged therein comprising sections, means for supporting each section comprising cooperating beveled members arranged on opposite sides of said section, said beveled members engaging the top and bottom respectively of the section to clamp it in position.

4. In a pulverizer, the combination of a casing, a grinding surface arranged therein comprising sections, means for supporting each section comprising coperating beveled members arranged on opposite sides of said section, said beveled members engaging the top and bottom respectively of the section to clamp it in position, and means for independently adjusting each of said beveled members.

5. In a pulverizer, the combination of a casing, a grinding surface arranged therein having sections, means for supporting each section comprising a vbeveled member en gaging the section on the top thereof at both sides, means for adjusting said members toward and from each other, additional beveled members engaging the section en both sides of the bottom thereof, and means for adjusting said latter members toward and from each other.

G. In a pulverizer, the combination of a segmental grinding surface, curved rings having oppositely inclined beveled edges engaging the top and bottom respectively of said surface so as to clamp the same in place.

7. In a pulverizer, the combination of a segment-al grinding surface, curved rings having oppositely inclined beveled edges engaging the top and bottom respectively of said surface so as to clamp the same in place, and means for adjusting said rings inwardly and outwardly to change the position of the grinding surface.

8. In a pulverizer, the combination of a segmental grinding surface, two curved rings engaging said surface at each side on the bottom thereof, and two cooperating curved rings engaging said surface at either side at the top thereof, said surface being clamped between the adjacent rings.

9. In a pulverizer, the combination of a segmental grinding surface, curved rings having beveled edges engaging the surface on each side at the bottom thereof, coperating curved rings with oppositely inclined beveled edges engaging the surface at the top thereof, and means for independently adjusting said rings inwardly and outwardly.

10. In a lpulverizer, the combination of a segmental grinding surface, a casing in which said surface is mounted, means for supporting said surface Within the casing comprising a member having a beveled surface supported by the casing and adapted to engage the grinding surface at one side thereof, means for adjusting said member inwardly and outwardly on the casing, a' member having a beveled surface engaging the opposite side of the grinding surface and supported by the casing, and means for adjusting' said member inwardly and outwardly.

11. In a pulverizer, the combination of a grinding surface composed of separate sections, curved bars having beveled edges for cooperating with the ends of said sections, means for adjusting said bars inwardly and outwardly to adjust the sections with respect to the casing, and an adjustable strap arranged under the centers/'of said bars.

l1'2. In :i pulverizer, the combination of a segmental grinding surface, curved rings having oppositely inclined beveled edges engaging opposite sides of the segments of said grinding surface, and set screws for positively moving said rings inwardly.

13. In a pulverizer, the combination of a segmental grinding surface, curved rings having oppositely inclined beveled edges engaging opposite sides of the segments of said grinding surface, and bolts for positively moving said rings outwardly.

14. In a pulverizer, the combination of a segmental grinding surface, curved rings having oppositely inclined beveled edges engaging opposite sides of the segments of said grinding surface, set screwsfor bearing against said rings for moving the saine inwardly, and bolts threaded into said rings for moving the same ontw ardly.

15. In a pulverizer the combination with a grinding cage cap( ble of being circumferentially contracted and expanded, of means for expanding or 'hich means comprises' a pair of independently movable rings engaging the ends of the grinding cage and means for adjusting the'positions of said rings.

16. In a pulverizer the combination with a segmental grinding cage capable of being 4circumferentially expanded or contracted, of

means for expanding and contracting said cage, which means comprises a pair of independently adjustable rings engaging the ends of the cage and an adjustable strap for supporting the central portion lof said cage in its adjusted position.

17 In a device of the character described, the combination of a casing having a grinding surface with a discharge opening, a screen covering said discharge opening, a frame support-ing said screen in posit-ion, and means on each side of said frame for adjusting the same relativeto the casing.

18. In a device of the character described, the combination of a casing having a grindingsurface With a discharge opening, a screen covering said discharge opening, a

frame for supporting said screen in position, means on each side of said frame for adjusting the same relative to the casing, and means for clamping the frame in adjusted posit-ion.

19. In a device of the character described,

the combination of a casing having a grinding surface provided with an opening, a

screen fitted within the opening, means for adjusting the same relative to and means for clamping the screen upon said adjusting means.

20. In a device of the character described,

the combination of a casin having a grinding surface provided wit an opening, a screen adjustably mountedy therein, means on opposite sides of the screen for adjusting same relative to the casing, and means also on opposite sides of the screen for holding the same against said adjusted means.

21. In a deviceof the character described, the combination of a casing having a grinding surface provided with an opening, a screen arranged in the opening, and a movable member having an inclined surface for adjusting said screen relative to the casing. 22. In a device of the character described,

the combination of a casing having a grinding surface provided with an opening, a screen arranged therein, a bar having a beveled edge coperating with said screen, and

contracting said cage, v

the casing, I I

means for adjusting the bar relative to said engaging the beveled faces to adjust the casing. saine relative to the casing.

23. In a device of the character described, In testimony whereof I hereunto affix my the combination of a casing having, a grindsignature in the presence of two witnesses, ing surface provided with a discharge openthis 2nd day of June, 1910. ing, ay screen covering said discharge open- EDWARD H. FRICKEY. ing, a frame for supporting said sereenvin litnessesz position, having beveled faced ribs attached, M. P. SMITH, and means on each side of said frame for F. R. CORNWALL.

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