US1139473A - Suspension and driving means for centrifugal machines. - Google Patents

Description

M. H. BARKER.

SUSPENSION AND DRIVING MEANS FOR CENTRIFUGAL MACHINES.

' APPLICATION FILED NOV. 21. 1904.

Lll w o I Patented May 18, 1915.

2 SHEETS-SHEET I.

I z C/ a u Z & I

M. H. BARKER.. SUSPENSION AND DRIVING MEANS FOR CENTRIFUGAL MMZHINES.

APPLICATION FILED NOV. 21. 1904.

Patented May 18, 1915.

2 SHEETS-SHEET 2- w m 1 i.

V H V MELVILLE H. BARKER, 015 BOSTON, MASSACHUSETTS.

SUSPENSION AND DRIVING MEANS FOR CENTRIFUGAL MACHINES.

Specification of Letters Patent.

Patented May is, 915

Application filed November 21, 1904. Serial .oio. 233,591.

T all whom it may concern:

Be it known that I, MELVILLE H. BARKER, citizen of the United States, and resident of Boston, county of Suffolk, Massachusetts, have invented certain new and usefullmprovements in Suspension and Driving 'Means for Centrifugal Machines, of which the following is a specification.

This invention relates to centrifugal ma chines and more particularly to that class of machines that'are suspended upon an oscillatory support for rotation.

The object of the invention is to improve such machines by providing a cheap and simple construction capable of affording quick and convenient access to all the supporting parts while at the same time affording a perfect lubrication in order to avoid the tendency of the rotary parts to become heated to which this class of machines are peculiarly liable.

In its main features the invention comprises a sectional shaft including an upper driving member and a lower basket-carrying member rotatably supported by an oscillatory suspending device at a point between the basket'and the center of oscillation.

By employing the principle of construction herein disclosed as constituting my invention, all objections which can be urged to the employment of a rotary bearing above the point of support, as well as a rotary bearing below the basket in the case of a double spindle machine, are fully obviated, while at the same time securing the positive advantage of perfect accessibility to the bearing parts as well as great convenience in assembling and taking down the machine for repairs or other purposes.

In the accompanying drawings l[ have illustrated a practical method of embodying the principle of my invention.

Figure 1 of the drawings is an elevation principally in central section showing a centrifugal machine embodying my invention and arranged to be driven by a direct connected electric motor. Fig. 2 is an enlarged view of a centrifugal machine embodying my invention showing how the same might be driven by a pulley and belt.

In both figures in order to permit an enlargement of the scale of the drawings the main portion of the rotary shaft between the basket or receptacle and the rotary bearing support is broken out.

In the practice of my invention as illustrated in the accompanying drawings, 1 provide the usual form of overhead hanger 0: provided with a spherical socket in which rests a ball a having a spherically curved bearing surface. The non-rotatable oscillatory spindle b. is passed through this spherical supporting ball and is supported thereby. The usual rubber washer or block a serves to afi'ord a yielding resistance the oscillations of the spindle b.

The spindle 5 instead of extending through the entire length of the machine as heretofore, is carried down below its point of oscillation or support only so far as may be necessary to provide suflicient space for attaching the driving means, and has provided at its lower end a bearing head I) which supports a raceway b in which are carried a series of anti-friction balls or rollers b which serve to form a rotary bearing support for the lower end of a short rotatable sleeve 0 which may be regarded as forming the upper or driving section of a horizontally divided rotary shaft for driving and supporting the basket. This rotary sleeve is provided with a proper anti-fric-' tion bearing surface at its lower end as indicated at c and is also provided near its lower end with alaterally or radially projecting flange 0 The lower section a of the divided shaft is preferably made solid and is provided at its upper end with a supporting flange 0 which is bolted to the corresponding flange on the upper section 0 so as to detachably connect the upper and lower sections together. The upper end of the rotatable shaft section 0 is provided with a hollow or recess 0 which completely incloses the r0- tary bearing b and forms an oil reservoir by which said bearing may be at all times immersed in oil in order to secure perfect lubrication. The oil finds its way into said bearing receptacle through the oil groove 6 formed in the spindle b for the purpose of to the rotary bearing beneath.

If desired in order to stiffen the joint between the two sections of the rotary shaft, the lower end of the sleeve. 0 may be extended somewhat below the plane of the conveying the oil from the upper oil cup 0 flange c as shown at 0 so as to project into the hollow end of the solid shaft 0 withwhich it may form a close engagement to give additional support to the connection. At the lower end of the solid shaft 0 is secured the basket 0! in any suitable or well .known manner.

The construction above described may be adapted to be driven either by belt and pulley as indicated at e, e in Fig. 2 or it may be utilized for direct electric driving for which it is especially well suited. In the latter case I secure to the spindle immediately below the hanger, a supporting yoke f to whose projecting arms is fastened the nonrotatable element 9 of an electric motor.

. I also provide a supplemental support. or .25

yoke f which is formed with a central bearing f surrounding the rotary sleeve 0 soas to form an additional means of steadying or holding rigid the field magnets in their lace. Immediately below this bearing f secure an annular. oil cup f whose upper portion is provided with a receptacle 7 for the oil drip, and whose lower end is recessed to rece1ve a washer f of felt or other substance which is clamped in place by means of a clamping nut ,1 so as to prevent the possibility of leakage of the oil .into the receptacle below. The rotatable element or armature g of the motor is secured directly to the sleeve 0 so that when the motor is energized by the current the motor will rotate causing the rotation of the sleeve 0 and the solid shaft 0 From the foregoing description and drawings it will be seen that I get rid of the long central spindle extending entirely and take down the machine where there is but little head room. I also find that this construction and arrangement materially cheapens the cost ofconstruction of the machine.

Without attempting to set forth all the changes in form, construction and arrangement that may be made-in the practice of 'my invention what I claim is lhA centrifugal machine embracing in its construction, an oscillatory spindle proand provided with .a. rotary bearing near with oil reservoirs at its upper and lower spindle, a thrust bearin vided with a bearing for rotatably supporting a basket-carrying shaft, the rotary basket-carrying-shaft comprising upper and lower sections detachably secured together their point of connection,substantially as described.

2. A centrifugal machine embracing in its construction an oscillatory non-rotating spindle, a thrust bearing carried by the v lower end of said spindle, a rotary sleeve member surrounding said spindle and rotatably supported by said thrust bearing,

- a basket-carryin shaft adapted to hang beneath said spin e, coupling flanges located 0 at the adjacent ends of said sleeve and basket shaft and adjacent to said bearing to form a detachable connection between said members, substantially, as described:

3. A centrifugal machine embracing in its construction a non-rotating oscillatory spindle, a thrust bearing carried by the lower end of said spindle, a two-part rotary shaft comprising upper and lower members detachably secured toneach other adjacent to said bearing, the upper member being supported by said bearing and having di' rect connection with the rotating means, and a basket secured'to the free end of the lower member, substantially as described.

4. 'A centrifugal machine embracing in its construction amoscillatory non-rotating spindle, a thrust bearing carried at the lower end of said spindle, a rotary driving shaft surrounding Esaid spindle and supported by said bearing, a basket-carrying shaft whose upper end is detachably secured end to end to the lower end of said drivin shaft, said driving shaft being provide ends respectively having communication with each other through the interior of said driving shaft at the level of'the thrust bearing, substantially as described.

5. A centrifugal machine embracing in its construction 'anoscillatory spindle, a rotary sectional shaft comprlsing a hollow upper section surrounding "and carried by said spindle, :a solid lower section whose lower end is secured to the basket, means for detachably connecting'together the adjacent ends of therespective sections, an electric motor whose rotary element is vsecured to the upper end of the hollow shaft section to rotate with the same and whose non-rotatable element is secured to a yoke secured directly to said oscillatory spindle, substantially as described.

6. A centrifugal machine embracing in its construction an oscillatory non-rotating I carried by the lower end of said spind e, a hollow motor shaft or sleeve surrounding said spindle and supportedhby said .bearing, a basketcarrying shaft suspended below said spinmses'w dle, and means for detachably cenneetini my hano'i, this fourteenth day of November,

said b3sliet carryin :Llaft to the loge? e11: 1904. 4

o sai s eeve the a et-carrying s a t eing provided with a recess at its upper end MELVILLE BARKER 5 to form an oil reservoir for said thrust bear- In the presence ofing, substantially as descrlbed. GEO. N, GODDARD,

In witness whereof", I have hereunto set KATHARINE A. DUGAN.

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