US 787411 A
Description (OCR text may contain errors)
M. m. m w, M 10 W M n R. m f MA P u a- A 2 ,ZM D n B E M MQW T M M v im NDL ABF WGm www aww Sm m y 5% 5 u /w 4| a 7 f7. NU n@ No. 787,411. PATENTBD APR. 18, 1905. J. W. SWAN.
APPLICATION FILED FEB. 2. 1904.
2 SHEETS-SHEET 2.
A fm2-22H5 Patented April 18, 1905.
iUNiteD STATES PATENT OFFICE.
JOIIN \V. SlVAN, OF LIMA, OI'IIO.
SPECIFICATION forming part of Letters Patent No, 787,411, dated April 18, 1905.
Application lilctl Pbbflllly 2,1904. Serial No. 191,859.
Be it known that l, Joux Swxx, a citig zen ot' the United Stat-es, residing' at Lima, in the county ol Allen and State ot Olno, have invented a certain new and useful lmprovegland.
ment in Stuffing-Boxes, ot' which the following is a t'ull. clear, and exact description, ret'- erenee being had to the accompanying drawings.
The objet-tot' this invention is to provide a stutling-box which shall possess the advantages ot' being lselt'-packing and self-adjustable, so as not to bite the traveling rod, and easily separable in renewing thel packing'.
The stulling-box is particularlyadapted t'or oil-wells where it is intended to surround they pol1shrod. Such stu lting-boxes are used out ot' doors and in the hands otl men who are t'ref luently careless. and it very often happens f that in tightening the gland the same is caused to bite the rod, miuringitand causing destructive wear. In obviating this ditliculty I provide springs which are adapted to draw the gland into the box. These springs are placed on opposite sides ot' the box, and located intermediately thereot', on opposite sides of the box, are the tightening-bolts. This arrangement insures an even pressure ot' the gland into the box and allows a convenient adjustment ot' the bolts. No harm is done it' one bolt is tightened up considerably more than the other, tor the action otl the springs is not disturbed thereby. The springs keep the pack- 1 ing continually pressed around the rod with the desired tightness. Bly stulling-box also provides for the convenient removal otl the bolts or other parts, as desired.
The invention may be best summarized as consisting ot' the combinations of parts to the above end, as hereinafter shown and described.
In the drawings, Figure l is a plan ot' my improved stut'ting-box when used in a verti cal position Was, t'or example, around the polish-rod o't' an oil-well, Fig. 2 isa side elevation ot the stutling-box. Fig. 3 is a side elevation at right angles to Fig. Fig. I is a i The gland is designated C.
vertical central section, being' taken on the line I I ol Fig. I. Fig. is a plan otl the Fig. (3 isa plan of the box which carries the packing, and Fig. T is a plan ot the yoke t'or compressing the springs.
Referring to the parts by letters, A represents the box proper, which has a socket/r for carrying the packing l and has at its upper end a guiding-tlange u. The lower end ot' the box, as shown, is threaded at n, whereby it may be screwed into a cot'perating part. It lits within the socket A and has a flange u The polislrrod I.) passes through the box and gland and is packed by the packing li, which is compressed bythe gland within lhe box. lioosely surrounding thel box is a yoke IC, and between this yoke and the flange n', on diametrieally opposite sides olil the box, are thel springs` F. These springs are held in place by lugs. u, formed on the under side ol the llange u, with lugs f t'ormed on the upper side ot' the yoke IG. The yoke and the flange e are drawn toward each other by bolts (lr, ol which two are employed on diametrically opposite sides olr the box midway between the springs F. These bolts when tightened draw the gland into the box and compress the springs F. The expansible spring lorce of the com pressed packing and ot' the springs Fare thus in equilibrium. AS the packing wears the relatively increased torce ol the springs 'torce the gland O t'arther into the box. Thus the stallingbox is self-packing. Itl one otl the nuts 1/ should be tightened up more than the other, no harm results, t'or this simply tips the yoke a little out ot' its normal position on an axis which passes through the lower points ot support ot the springs F, so that the pressure which these springs give to the two sides ol the llange w on the gland remains equal. Thus there is no tendency ot' the gland to bite the rod, and one ot' the great dilliculties otl stutling-boxes is overcome.
To allow the convenient removal and assemblage of the parts, the openings d in the liange 0, which the bolts C occupy, are made, as shown, with a large portion d, through which the head g of the bolt may be passed, and a small portion c2, which is adapted to be normally occupied by the shank of' the bolt without letting the head pass. The yoke E has open slots e', which the shanks of the bolts occupy, and the nuts Z are adapted to seat in recesses e2 on the under side of the yoke, the recesses being such size as to hold the ends against rotation. rIhe flange a of the box is slotted at to allow the free passage of the boltsG. By this construction the stuflng-box may be tightened by simply turning the heads g ofl the bolts G, and no harm is done if one bolt is turned more tightly than the other. Vhen it is desired to remove the gland to replace the packing, the bolts are simply loosened suliiciently to allow the nuts ,f/ to descend out of' the recesses e2, whereupon the bolts may be swung outward, as indicated in dotted lines in Fig. 4C. To allow this movement, the slots e and .are open-ended, as stated, and, moreover, the
portions c2 of the openings in the flange c of the gland have their outer portions beveled downwardly, as shown at c3.
The yoke E is made to dip beneath the springs F, as shown in Fig. 2, so that the base of' the springs will be substantially on a line with the upper surface of the nuts g, so that the springs will not be given any side strain by the twisting of the yoke.- The yoke is strengthened by arching cross-ribs e3.
I claiml. In a stuffing-box, the combination of' the box, agland therefor, a yokeloosely surrounding the box, bolts connecting the yoke with the gland, and springs outside of the box located intermediate of the bolts for giving the yoke a tendency to move in the direction to force the gland into the box, substantially as described.
2. In a stuii'ing-box, in combination, a box, a glandv adapted to seat therein and having a flange thereon, a yoke loosely surrounding the box, bolts connecting said yoke and flange, springs on opposite sides of the box placed intermediate of' the bolts and tending to press the yoke away from said iiange, substantially as described.
3. In a stuliing-box, in combination, a box having a flange, a gland seating within the box and also having a flange, a yoke loosely surrounding the box, bolts connecting the yoke and flange of the gland, and springs located intermediate of the bolts and on the outside of the box and compressed between the liange of the box and said yoke, substantially as described.
4. In a stuliing-box, in combination, a box having a ange, a gland seating in the box and also having a flange, a yoke loosely surrounding the box, bolts on *diametrically opposite sides of' the box securing the yoke and the liange of the gland, and springs on diametrically opposite sides of the box compressed between the yoke and the flange of the box, substantially as described.
5. In a stung-box, the combination of a box, a gland adapted to seat therein and having a flange, a yoke loosely surrounding the box, springs tending to force said yoke away from the ange, and bolts occupying openings in said flange and passing through openended slots in the sides of the yoke, substantially as described.
6. In a stuling-box, in combination, a box, a gland adapted to seat therein and having a flange, a yoke loosely surrounding the box, springs tending to force said yoke away from the flange, bolts occupying openings in said flange and passing through open-ended slots in the sides of the yoke, and nuts on said bolts on the under side of said yoke occupying recesses in the yoke, substantially as described.
7. In a stuffing-box, in combination, a box having aflange, a gland adapted to seat within said box and having also a flange, a yoke loosely surrounding said box, springs on diametrically opposite sides of the box between the yoke and the Harige of the box, bolts on diametrically opposite sides of the box midway of the springs occupying openings in the flange of the gland and extending through open-ended slots in the sides of' the ange of' the box and the sides of the yoke, and nuts beneath the yoke in which said bolts screw, substantially as described.
8. In a stufling-box, in combination, a box having a flange, a gland adapted to seat within said box. a yoke loosely surrounding said box, springs on diametrically opposite sides of the box between the yoke and the flange of the box, bolts adapted to connect the yoke and gland, and nuts beneath the yoke in which said bolts screw, said' yoke being arranged to bring the lower end of the springs substantially in the same plane with the upper face of the nuts, substantially as described.
9. In astuliing-box, in combination, a box, a gland adapted to seat therein and having a ange, a yoke loosely surrounding the box, means tending to move said yoke away from said ange, bolts and cooperating nuts connecting the yoke to the fiange, said bolts occupying contracted openings in the flange and having heads thereabove, said contracted openings having adjacent larger openings through which the heads may pass, substantially as described.
l0. In a stuling-box, in combination, abox, a gland adapted to seat therein and having a flange, a yoke loosely surrounding the box, means tending to move said yoke away from 1 said tlange, bolts and cooperating' nuts con- E said slots recesses which the nuts occupy, subnecting' the yoke to the flange, said bolts oc- Stzintielly :is described. IO cupying contracted openings in the flange In testimony whereot [hereunto atlix my und having heads therezibove, smid contracted signature in the presence ot' two witnesse. openings having adjacent larger openings JOHN lV. SlVAN.
through which the heads may pass and said lVitneeses: yoke having open-ended slots in its sides A. S. (fruiuiriu, which Suid bolts occupy and lnivinggv beneath H. IRVIN.