US1354544A - Stuffing-box - Google Patents

Description

E. F. FISHER.

STUFFING BOX.

APPLICATION FILED FEB. 27, 1919. 1,354,544.

Patented Oct. 5, 1920.

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l l lll h'll'l' WITNESSES y waaiif V UNITED STATES PATENT OFFICE.

ERNEST F. FISHER, or ESSINGTON, PENNSYLVANIA.

srUrFINe-Box.

Specification of Letters Patent.

Patented Oct. 5, 1920..

Application filed February 27, 1919. Seri'a1,N0. 279,514.

which the machine part or instrumentality passes. The object of my invention is a stuffing-box or gland which shall be impervious under varying conditions of use, particularly where, in consequence of mal-alinement or conditions of service, the parts are not accurately true. v

The invention is illustrated in the accompanying drawing which shows in longitudinal section a stuffing-box of my invention encircling a shaft. The shaft itself is indicated in elevation at 1. The stuffing-box includes first a housing 2, preferably of a gen-- eral cylindrical shape, supportedat one end by the structure to which it is applied, that is to say, the dividing wall or partition through which the machine part passes, and in respect to which different pressures (or different media) are to be maintained, separate one from the other, on opposite sides.

To the end of obtaining proper support for this housing it mayv be conveniently provided with an encircling flange 2 at the end where the support is to be had, in order to secure it. in impervious engagement upon the structure. Itwill of course be under stood that, instead of being bolted through a flange to a support, this housing may in some cases be cast integral with the supporting body, or be otherwise secured to it. This housing, as will be observed, extends from the support in a direction (when the parts are assembled) longitudinally of the shaft 1.

To the outer or free or unsupported end of the housing 2 is secured a gland caseor packing-cased This case, as will be seen in the drawing, is of a general cylindrical shape, and housing 2 and packing-case 3 are provided with cooperating flanges 4 and 5, by means of which the packing-case may be secured to the housing, the joint being of glands for macourse impervious. It will be noted of the packing-case also, that, when the parts are assembled, it, like the housing, extends longitudinally of the shaft and, in the preferred construction as it is shown in the drawing, the housing encircles and incloses the packing-case, and the packing-case in turn encircles and incloses the shaft.

The flanged connection may be formed with such a relatively thin walled channel as 5 encircling the shaft, or other provision may be made to increase flexibility at this point, for purposes presently to be indicated.

The packing-case 3 is provided at one end with a head (preferably integral) 6, through which is an opening to allow the free passage of the shaft, and it is provided at the other end with a head 7, which takes the form of a nut capable of being screwed into and screwed out ofthe end of the packing-case, the nut also being provided with an opening for the passage of the shaft. Between these two heads, within the packing-case and between thepacking-case and the body of the shaft is a body of packing 8 which, by the screwing in of the head 7, iii compressed to afford the desired packing e ect.

Within the packing-case, adjacent the body of packing 8, and preferably about midway the length of the box is a wickcase 9, preferably of the form sufliciently indicated in the drawings-channel-shaped in cross-section, the channel opening inward, and surrounding the shaft with a suffcient clearance. At one point in the periphery of this wick-case (and, when the shaft ex tends horizontally, as shown in the drawing,

then at the lowermost point in the periph ery) is an orifice through the mid-web of' the channel, and opposite this orifice is a corresponding orifice'through the packingcase. These orifices are provided to allow a wick to extend through. Immediately adjacent and external'to the packing-case, and

preferably within and part of the housing, is an oil-well 10, and, when the arrangement is as shown in the drawing, the shaft extending horizontally, this oil-well 10 will be so formed that it is disposed immediately beneath the two alined orifices just. mentioned. Screwed into the orifice in the packing-case 3 may be a nipple 11, extending downwardly and/beneath the surface of a pool of oil maintained in the oil-well.

applied to a rotary will be u The parts are assembled as shown in the drawing, a body of oil 12 filling the oil-well, and a wick lid-disposed Within the wick-case 9, and extending through the tube 11 into the oil-well. The nipple 11 opens into the oil-well beneath the surface of the pool of oil in the well. Thewick-case 9 and the packing 8 are clamped and compressed with in the packing-case and about the shaft 1 by screwing in the head Y of the packing-case; When so assembled and as operation progresses there is an oil feed either by capillary attraction or pressure upon the surface of oil (pressure of the high-pressure side of the dividing wall being exerted upon this surface) through the wick 13 to the surface of the shaft within the packing-case, and so the proper oil supply is afforded to make the packing secure and impervious, and also to lubricate the shaft. An oil-ring 14 may be provided, to con veyi oil from the oil-well 10 and distribute it upon the surface of shaft 1 at a point adjacent the packing-case from which point it will, as will be understood, creep along the surface to the body 8 of the packing. Instead of this oil-ring another wick-case, similar to the case 9, might, inanifestly, be provided.

l have spoken of the material within the wick-case as wick. Of course it will beof any suitable material, fibrous or otherwise, to take up, carry and distribute. the oil. The presence of the tube 11, its lower end sealed beneath the surface of the pool of oil, prevents dirt from being carried to the surface of the shaft As shown in the drawings, there is arranged to the left of the stufing-box or gland a shaft-bearing 15, and, still'to the left of the bearing, another packing 16. It will. be understood that the lubricant ried by the oil-ring 1 1- may furnish the necessary lubrication the bearing 15. th farther side of the bearing the duct 17 may be provided, to bring baclr an excess of oil into the oilwell.

illustrated in the drawing, the glait 'l is stood that it is applicable to other parts extending througl" septum t l, instance, instead of a rotary might be a rec' s case, as wi l ing 15 wool place a lil naril lexible; to the end that the packing-case shall in service hug the shaft, even though the shaft be out of line. In the particular embodiment shown (which is exemplary, merely'the invention not being so narrowly limited) the packing case is supported at one end, and at one end only,and this by a flange (itself possessed of some flexibility) I to the outer, unsupported end of housing 2.

comparison with the walls of the housing.

I have intended in this specification to give a typical embodiment'of my invention, together with indications of modifications of structure. In this respect my invention is not limited, and I mean to include such modifications as may be made, and still retain the essential features of my invention and be defined in'the following claims 9 I claim 1. A stuffing-box for shafts including in its structure a cylindrical housing a cylindrical packing-case arranged within said housing the two said parts being united one to the other through channeled fla substantially as described: I

2. A stufiing-box for shafts includin its structure a housing and a sleevepacking case adapted to encircle a shaft a as a packing case complete independen' said housing, but structurally borne housing and extending from said longitudinally of the the thereof being otherwise llllSll packing case dapted t between its-e ing, substa .o. A fie i eluding in its to he borne a which the e sleeve-like its shaft, the extension thereof being otherwise unsupported, said packing-case adapted to encircle the shaft and to contain within and between itself and the shaft a body of packing substantially as described.

5. A flexible stufling-box for shafts including in its structure a housing adapted to be borne at one end by the structure to which the stuffing-box is applied, a sleeve-like packing case borne by said housing and extending from the point of such support longitudinally of the shaft, such extension being otherwise unsupported, said packing-case adapted to encircle the shaft and to contain within and between itself and the shaft a body of packing, an oil-well formed within said housing, and means for carrying oil from said well and spreading it upon the surface of the shaft at a point adjacent such body of packing substantially as described.

6. A stufiing-box for shafts including in its structure a sleeve-like member adapted to encircle a shaftand to contain within and between itself and the shaft a body of packing, a wick-case adapted to be arranged within said sleeve-like member and to encircle the shaft also and to carry a wick and sustain it in contact with the shaft, and an oil-well arranged to receive the end of a wick protruding from said wick-case substantially as described.

7. A stuffing-box for shafts including in its structure a sleeve-like member adapted.

to encircle a shaft and to contain within and between itself and the surface of the shaft a body of packing, a wick-case adapted to be arranged within said sleeve-like member'and adjacent such body of packing, said case being adapted to carry a wick and maintain 1t in contact with the shaft, an orifice through said sleeve-like member, an oil-well external to said sleeve-like member, a nipple carried in the orifice through said sleeve-like member, and extending into said oil-well, the parts being so arranged that a wick in place in said wick-case may extend through said orifice, and through the nipple therein, intosaid oil-well substantially as described.

'8. In combination'with a shaft-bearing, a stufling-box including in its structure a sleeve-like member adapted to encircle the shaft and to contain within and between itself and the shaft a body of packing, an oil-well, and means for conveying oil from said well to said bearing and to said stuffing-box substantially as described.

9. In a stufiing-box the combinationof a housing borne by the structure to which the stuffing-box is applied and extending from the point of support longitudinally of the shaft, a sleeve arranged within said housing and supported at one end to that end of the housing remote from the point of'housing support, the other end of said sleeve being unsupported, said sleeve adapted to encircle the shaft and adapted to contain within and between itselfand the shaft a body of packing, a wick-case adapted to be contained within the sleeve adjacent such body of packing and to encircle the shaft, said case being further adapted to contain a wick, said sleeve being provided with an orifice through which may protrude the end of a wick contained in said case, and an oil-well formed in said housing and so arranged that end of the wick protruding through said sleeve may extend into it substantially as described. y

In testimony whereof I' have hereunto set my hand. I

v ERNEST F. FISHER. Witnesses:

NELLIE M. FINEGAN,

JOHN R. MOWRY.

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