US274050A - Pulverizing-machine - Google Patents

Description

(No Model.) 3 Sheets-#Sheet 2. s. P. M. TASKBR.

PULVBRIZING- MACHINE. No. 274,050. Patented Mar. 13,1883.

. INVETQR (No Model.) 3 Sheets-.Sheet 3.

P. MENSER. PULVBRIZING MAGHINE. 1\Io.274,050. Patented Mar. 13,1883.

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UNITED STATES PATENT GEErcE.

y STEPHEN P. M. TASKER, OF PHILADELPHIA, PENNSYLVANIA.

PULVERIZING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 274,050, dated March 13, 1883.

Application filed November 23, 1882. (No model.)

and embodies improvements upon a certain novel pulverizing-machine invented by William Henry Thompson, ot Islington, county of Middlesex, Kingdom of Great Britain, and patented to him in and by Letters Patent of the y United States No. 249,489, dated November 15,

chine, and are hereinafter mentioned.

In view of the above fact, and in order to a better comprehension of my present invention, I regard it as necessary to brief] y describe the several inventions upon which my present is an improvement.

Broadly stated, Thompsons invention consists in the combination, within a suitable inclosing-case, embodying in its own structure `a vertically-erected hollow circular track, ot' an independent sphere or ball adapted to revolve around the casing, and of given means for imparting to the ball not only revolution around the casingtrackbut also 'rotation about its Certain other features of construction enter into the Thompson invention which are dispensed with by'me, as the organization of my machine avoids their employment.

In the Thompson machine, as also in mine,

Vmaterial to be pulverized is fed through a hopper into the casing,and is crushed by the com- `loined revolution and rotatiou'ot' the sphere or ball.

The means employed by Thompson for effect- -ing the combined movement ofthe ball are a pair ot' vertically-erected disks provided `with peripheral beveled bearing-surfaces, and arranged face to face at some distance on either side of the center of a shait horizontally joui'- naled ,through the casing, and by which they are revolved. The disks are capable ot' rocking movements by virtue of being each loosely hung or supported on the shaft between two collars having curved bearing-faces. The collars prevent a lateral movement of the disks at their center. Exterior to their pheripheral bearing-surfaces the disks are provided with a circular series of blades, adapted by means ot' their location, inclination, and proximity to each other to prevent the escape of material under treatment until it has become sufficiently pulverized, but thereafter adapted to permit of its escape into a receptacle exterior to the casing, from which receptacle the sufficientlypulverized material is by suitable means removed.

The operation of the disks and ball is described by Thompson in the following language, which also I regard as ot' importance to restate here in order that a more thorough comprehension of my improvements maybe had. Thompson says: The operation ot' the disks and ball is substantially as follows: When the disks are revolved their tendency is to assume a position exactly at right angles to the shaft; but as they cannot do this, for the reason that the diameter ot' the ball at the point of contact exceeds the distance between the adjacent bearing-faces, it follows that they bear or press upon the ball in their effort to assume this position and crowd .the latter against the casing with greater or less force,

according to the rapidity of the revolution.

The disks, also, by the friction-ot' the contact,

carry the ball with them in their revolution about the casing, and thus communicate to it a centrifugal action. The disks, also, by the friction ot'this contact, communicate to the ball also an axial rotation. The ball then, it will be understood, is caused to act upon the material to be pulverized with a resultant force, whichV is obtained from three distinct sources, as follows: first, the direct radial thrust which. is received from 'the efforts ot' the disks to assume a position at right `angles to the shaft, the bearing-faces of the same acting as inclined planes to` crowd the ball against the inner surface of the casing; second, the centrifugal ac tion which results from the rapid revolution of the ball around the casing; and, third, the grinding action which results from the rotation of the ball upon its axis. By adapting the ldisks to rock upon the shaft the ball is permittedto move ouradial lines to and from the IOO .2 l e eri-1.050

shaft, according to the amount of material in the casing,without being free at anytimefrom the action of the disks.

My invention also relates to and embodies in its structure certain improvements upon the pulverizing machine invented by Hermann Bernhard Feldmann, of Philadelphia, Pennsylvania, and patented-to him in and by Letters Patent of the United States No. 265,791, dated October 10, 1882, to which Letters Patent reference -is also to be made for the more clear comprehension of my present improvements.

Among other features of construction, Feldmanns machine embodies two sleeve-journals, described as of parrot-gun form, applied to and rigidly connected with the shaft, upon -tlie rounded breech of which sleeve -journals the disks are seated, free to yield or rock to accommodate themselves to any varying movement of the ball, and the tapered muzzles or conically-tapered tubular extensions of which are tted vvithin correspondinglyshaped tubular' journal-bearings inclosed withinjournal-boxes framed into the side plates of the casing, so that the shaft is,through the instrumentality of the,

sleeve-journals, adjustably journaled in the side plates or frame-work of the casing itself,

-and theweight of the-shaft, sleeve journals,

patented machine referred to embraces contin-- uous fixed screens tightly inclosing both sides of the casing, which latter is made after the pattern of Feldmanns casing.

It also embraces outwardly and downwardly inclined discharging-chutes, which operate, in connection with the screens, to discharge pulverized material completely clear of the bedplate or base frame-work of the machine.

1t also embraces take-ups, which are scoopshaped devices formed in connection with the blades ofthe disks, being in effectoblique openf ings around the periphery of the disks, communicating from the rear to the front face thereof.-

My invention also relates to and embodies in its structure certain improvements upon the dry-pulverizing machine invented by me, and patented to me in and by Letters Patent of the United States No. 265,715, dated October 10, 1882, to which Letters Patent reference is also to be made for a more clearcomprehension of my present improvements.

Among other features of construction, my patented machine referred to embodies disks without blades and radially disposed peripheral openings, which are not necessary, by reason of the organization of the machine for dry pulverization only.

My present improved apparatus, hereinafter described and claimed, is also represented as equipped with a certain improved hopper for pulverizing machines invented by me, application for patent for which having been executed by me November 20, 1882, and filed in the United States Patent Office November'22, 1882, no further reference is here necessary.

Generally stated, my present invention embraces the provision ot' an improved casing, a receiver for the pulverized material Within which said casiu g is erected, dischargingspouts leading from said receiver, and pedestals for upholding the shaft formed as a part of said receiver; again, it embraces the provision of an improved sleeve-journal, which is employed solely to support and actuate the disks and not to constitute a device to assist in the journaling of the shaft; again, the provision of solid disks provided simply With.take ups, scoops, or kindred contrivances again, the provision of a trap or outlet in the screens,

,constituting the lowermost portion of said screens, hinged to the upper portion and provided with any suitable fastening device for the occasional discharge of material too large to pass.

through the'mesh; agajn,the provision of such discharging-chutes from the screens as co-operate with the discharging lspouts formed in- ,tional elevation a pulverizing machine conveniently embodying a preferred form of my invention, the ball or crushing-sphere, shaft, and disk-spring being represented in elevation, representing also in place thereupon and in sectional elevation a hopper of the character invented by me, and described in the application for patent hereinbefore mentioned. Fig.2isarighthand end elevation ofthe apparatus represented in Fig.1. Fig.3is au elevation of the rear face or outside of one of my improved disks. Fig. et is a top plan or edge view of the same. Fig. 5 is a side elevation of one of my improved screens, represented as detached from the casing. Fig. 6 is a front elevation of a washer employed in connection with the several devices employed for the adjustment of the sleeve-journals on the shaft. Figs. 7 and 8 are respectively a view in perspective and a rear elevation of the adjustingnut, which is threaded upon the shaft, and which serves to assist in the setting of the sleeve-journals. Fig. 9 is a front elevation of a form of sprocket-pinion employed in connection with the adjusting-nut, and Fig. l0'is a similar view of a set-screw nut which tixes the IIC IIS

set thereof, andFig. 1l is an enlarged longitudinal vertical sectional elevation of the several adjusting devices in place upon the shaft. i Similar letters of reference indicate corresponding parts.

In the accom panying drawings, A represents my improved hopper, hereinbefore referred to,

spouts, as shown by the dotted base-line of Fig. 2, so thatpulverized material discharged into it from the casing gravitates out through thespouts. Upon both the sides ofthe receiver, and constituting an integral portion thereof, are pedestals E, for supporting the bearings F of the driving-shaft G. These pedestals are most conveniently cast as a portion of or secured by bolting to the receiver, and they are formed to con tain vertical set-screws H,for adjusting the height of the bearing, and horizontal set-screws I for adjustingits lateral set. Beyond the pedestals, upon the projecting eX- tremities of theshaft, are rigidly secured balance-wheels J and pulleys K, forthe actuation of the shaft.

L is the ball-track; M, the ball or crushingsphere, and N the spiral spring between the disks, all substantially as arranged in Feldmanns patent referred to.

O are screens fitted to completely incase both sides of the cylindrif'orm casing. One of these screens is shown removed in Fig. 5. Each screen is vprovided with atrap, P, near the lower portion thereof. The traps are preferably formed as hinged doors, embodying in their structureascreen, and secured by latches or kindred fastenings. The trap can, if desired, be opened while the machine is in operation to enable the removal of objectionable substances.

Q are discharging-chutes, preferably formed as apart ofthe frame of the screens, or, it'desired, applied as separate members thereto, substantially as shown in the drawings, the same being narrow bands or rings downwardiyinclined as to thelower half of their circumference, and terminated short of the line of the dischargingfspouts, so that material escaping through the screens will be delivered almost in the line of the discharge of the spouts. They are to be contradistinguished from my patented discharging-chutes hereinbefore referred to, in that,vinstead of discharging completely clear of the bed-frame of the machine,

my present screens discharge into the spouts, and so co-operate therewith in freeing the receiver of my apparatus from pulverized material.

R are the disks, which are solid and not provided with radial blades, but which, unlike the solid disks of my patented dr ','pulverizing ma-` chine, hereinbefore referred to, are provided with take-ups S, and are of substantially the same diameter as the casing, so as to completely fill the same, in the latter particular resembling the disks represented in my Letters Patent No. 265,713 cited. I have discovered that this construction enables me to per form equally good work and avoid the expense incident to the construction of a bladed disk.

The take-ups are well represented in Figs. 3 and 4, and operate substantially in the manner of the talse-npsdescribed in my patftntlast above cited.

Tare my improved sleeve-journals, the breech portion Vot' which, or that portion which is pro vided with my patented clutch, being the same as that described in my Letters Patent last above cited, while their rearwardly-projecting Aextremities t, or muzzlesf7 so to speak, are ot' cylindrical shape and not tapered, and areh'tted within stufhg-boxes U, applied to the screens. This construction prevents the material from passing out before it is properly pulverized, and also enables me to dispense with the journal-boxes described and claimed in my Letters Patent No. 265,713, last above cited. l

As a means of adjustingthesetof the sleevejournals upon the shaft and with respect to the disks, spring, and crushiligspliere, I have devised a lock-nut contrivance, of which the following is a description. I now refer to one set only. i

ais a washer, Figs. 1, 6, and 11, which is slipped over a portion of the drivingshaft, which is threaded and denominated by the letter b. This washer fits within the cylindrie muzzle of the sleeve-journal and impinges againstthe squared central portion ofthe shaft.

d, Figs. 1, 7, 8, aud'11,is an adjusting-nut threaded upon the threaded portion of the shaft. It is provided with a projecting annular boss, d', formed upon `one ofits faces-viz., that face which impinges against the washer in the set of the 'parts represented in Figs. l and ll-while upon its opposite face it is,pro vided with any given series of radiallydisposed grooves d. This adjusting-Untis adapted to be screwed up against the muzzle of the sleeve-journal, so as to force the sleeve-journal inwardly to the desired position.

` In Figs. 1, 9, and 11, e e are what I terni sprocket-pinions, but which are, in fact, lock-washers, the functions of which 'are hereinaiter very fully described. Only one of them is, for convenience and simplicity ofconstruction, provided with sprockets.

In the following description I speak of but IOS IZS

one set of devices, although there are two sets,

Islides into a spline seat, t', channeled in the threaded portion of the shaft. That face of the pinion which fronts the rear face of the adjusting-nut is provided with a corresponding series of radially-disposed tongues, e, adapted to seat themselves in the grooves in the rear face of the adjustingnut when the grooves are, made to correspond in position therewith.

f isa set-screw nut, threaded upon the shaft, provided with a series of threaded set-screw holes, radially disposed, into any one of which happening to come in line over the splinegroove in the shaft the set-screw is entered.

By the above arrangement of parts it will be understood that the washer being slipped in place and theadjusting-nut screwed up, the sprocket-pinion can be slid up so that its tongues enter the grooves in the adjusting-nut, n hereby the latter is prevented from rotating and the two devices together constituted into a clutch, and that when the set-screw nut is then-screwed up and its set-screw screwed into the spline-seat in the shaft the entire device is tixed as a rigid Whole upon the shaft, and the sleeve-journals Xedly adjusted in apredetermined position. The sprocket-pinion, as I have termed it, is formed with sprockets for the purpose of actuating, by means of the sprocket-chain g, the sprocket-wheel h upon thedriving-shaftofthehopper. Thissprocketpinion would be equally operative were the sprockets omitted from the periphery, and Were the pinion made as a simple clutch-pinion provided with an internal spline, and the projecting tongues, substantially of the form shown, applied to the right-hand side of the shaft of Fig. 1, and illustrated in Fig. 11.

Having now sufficiently described both the construction and operation of my several improvements, I claim and desire to secure by Letters Patent- 1. In combination With a casing for a pulverizing-machine of the class herein recited, a receiver Within which said casing is erected, and by which it is supported, pedestals formed as a part of -said receiver, and dischargingspouts, substantially as set forth.

2. In combination with a'casing for a pulverlzing-machine of the class herein recited, screens inclosing the sides of said casing, outwardly and downwardlyinclined dischargingchutes, a receiver within which said casing is erected, and by which it is supported, and discharging-spouts leading from out the receiver, p

the arrangement being such that the pulverized material which passes through the screens is delivered by the chutes in the lineof disch arge of the spouts, substantially as set forth.

3. In combination with a screen for inclosing the sides of the casing, of a pulverizingmachine ofthe class herein recited, a trap constituting the lowermost portion of said screen hinged to the upper portion, and provided with any suitable fastening device, substantially as set forth.

4. Inapulverizing-machine,thecombination of a casing, two oppositely-placed solid disks provided with one or more take-ups, and suitable means for actuating the disks, substantially as set forth.

5. A solid disk for a pulverizing-machine, provided with one or more take-ups, scoops, or kindred contrivances, substantiallyV as set forth.

6.l In a pulverizing-machine,two sleevejournals having rounded breeches with straight or cylindric muzzles, in combination with a casing and with stuffing-boxes adapted to said muzzles, substantially as and for the purposes set forth.

7. As a composite device for adjusting the set of the sleeve -journals of a pulverizingmachine of the class herein recited, thc combination ot' the shaft, the sleeve-journals, the adjusting-nut, the 4sprocket-pinion, and the set-screw', together arranged and operating as hereinbeforeset forth.

In testimony whereof I havehereunto signed my name this 21st day of November, A. D. 1882.

STEPHEN P. M. TASKER.

In presence of J. BoNsALL TAYLOR,

JOHN J OLLEY, Jr.

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