US851147A

US851147A - Stuffing-box.

Info

Publication number: US851147A
Application number: US32890906A
Authority: US
Inventors: Joseph B Willings
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-08-02
Filing date: 1906-08-02
Publication date: 1907-04-23
Anticipated expiration: 1924-04-23

Description

110.851.147. PATBNTED APR. 23, 190m LB. WILLINGS.

STUFFING BOX.

APPLIOATION FILED AUG. z, 1906.

. 2 SHEETS-SHBBT 2.

JOSEPH B. WILLINGS, VANBUREN, INDIANA.

STUFFING-BOX.

Specification of Letters Patent.

Patented April 23, 1907.

Application filed August 2,1906. Serial No. 328,909.

To all whom, t 11i/any concern.-

Be it known that I, JOSEPH B. WILLINes, a citizen of the United States, residing at Vanburen, in the county of Grant and State of Indiana, have invented certain new and use- -ful Improvements in Stufling-Boxes; and I do declare the followineF and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention is an improved stuffing box, which is particularly adapted for use on the reciprocating rods of the pumps of oil and water wells, but which may be used for other purposes.

One obj ect of the invention is to provide a stufling box in which the spring or springs which press its packing against the reciprocating rod will be well protected by a shield so that it cannot rust or crystallize.

Another object of the invention is to improve and simplify the construction of stuifing boxes of this character and thereby render the same more durable and effective, and

less expensive. i

Vith the above and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts hereinafter described and claimed.

In the accompanying drawings ,MFigure 1 is aside elevation of my improved stuiiing box; Fig. 2 is a longitudinal sectional view through the same; Figs. 3 and 4 are transverse sectional views, taken respectively on the planes indicated by the lines 3-3 and 4-4 in Fig. 1 Fig. 5 is aview similar to Fig. 2, showing a slightly modified form of the stufling box; Fig. 6 is a detail sectional view through another form of stuffing box, showing the manner in which its springs may be protected; and Fig. 7 is a detail sectional viewof still another form of stuffing box embodying the invention.

.Referring to the drawings by numeral, 1 denotes the improved stufling box, through which the rod 2 reciprocates. The stufling box comprises a tubular body 3 having the rod 2 extending through and sliding in its bore and having external screw threads 4 at one of its ends to permit it to be attached to the pump or other apparatus on which it is used. To facilitate its attachment and removal, the body 3 is formed adjacent to the to be a full, clear,

threads 4, with flattened portions 5 adapted to be engaged by a wrench. At the opposite 4end of the body 3 is formed a cylindrical enlargement 6, which latter has at its outer end a circular recess or cavity 7 which is concentric with the bore of the body` 3, and at its inner end an annular groove or recess 8 is also concentrically arranged. The groove or recess 8 is adapted to receive a coil spring 9, which surrounds the tubular body 3 and is confined between the inner end 10 of the groove 8 and an annular flange 9L formed upon an externally screw-threaded collar or sleeve 10. The latter serves as a follower for the springQ and is adapted to slide longitudinally upon the body 3, it being prevented from rotating thereon by a key 11 carried by the body 3 and projecting into a groove in said collar or sleeve, Its external screwthreads 12 are engaged by similar internal screw-threads formed in the open end of a pressure cap or casing 13 which telescopes the enlargement 6 and has the rod 2 projecting through an aperture 14 in its closed end 15. A packing 16 of any suitable form is arranged in the casing or cap 13 between its end 15 and that end of the enlargement 6 in which the recess 7 is provided, said packing being shaped to enter said recess, as shown. Upon the outer face of the end 15 of the cap or casing 13 is formed a polygonal shaped portion 17 adapted tov be engaged by a wrench when it is desired to rotate the cap 13 and adjust it upon the follower nut or sleeve 10, and thereby vary the tension of the spring 9 upon the packing 16. The cap or sleeve 13 is formed adjacent to its closed end 15 with longitudinally extending, oppositely disposed slots 1S which permit the packing 16 to be seen and which permit any water within the cap or casing to escape therefrom. Similar slots 19 are provided adjacent to the opposite end of the cap or casing, so that the adjustment of the parts within the same may be seen.

The form of the invention shown in Fig. 5 of the drawings is very similar to that shown in Fig. 2. grooved inner end of the enlargement 6 forms a shield for the spring 9, and that this shield in Fig. 5 of the drawings is made separate` from the enlargement 6 or the tubular body 3 and is slidably mounted upon the latter, as shown. This shield 18at has its closed end IOC It will be noted that in Fig. V2, the

dercut inner end 20 of the enlargement 6.

In all other respects, the construction and operation of this form of the invention is the same as that of the one shown in Fig. 2.

In Fig. 6 of the drawings, I have shown a Well known form of stufling boX consisting of a body portion 21 containing the packing 22, which is held in position by a clamping member 23. The latter is clamped upon the body 21, by means of bolts 24 between the nuts 25, upon which and said bars 23 are arranged coil springs 26. inclosed in a casing consisting of two telescoping sections 27,128 which are interposed between the nuts 25 .and the member' 23, as shown.

The form of the invention shown in Fig. 7 is somewhat similar to that shown in Fig. 2 of the drawings, the chief difference being in the use of rods or bolts 30 for adjusting the tension of the spring, instead of the screwthread connection 12 between the cylinder 13 and the collar or sleevelO. It Will be seen that in this form of the invention, the spring is well protected from moisture.

From the foregoing description, taken in connection with the accompanying drawings, the construction, operation and advantages of the invention will be readily understood without requiring a more extended explanation.

While I have shown and described vonly afew of the many forms of my improved spring shield or protector, it will be under-` These springs are stood that I do not wish to be limited to the i precise showing herein set forth, since varlous changes 1n the form, proportion, and

the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention; as defined by the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters-'Patent is l. A stuiiing boX comprising a tubular body, a spring shield or protector thereon, a spring arranged in said shield or protector, a follower for said spring slidably mounted upon said body, a pressure cap or casing adjustablyconnected to said follower, and a packing interposed between said cap or casing and said spring shield.

2. A stuing boX comprising a tubular body, a spring shield at one end thereof, a coil spring within said shield, a follower nut or sleeve for said spring slidably but nonrotatably mounted upon said body, a pressure cap or casing surrounding said spring shield and screwed upon said follower nut or Y sleeve, and a packing interposed between said cap or casing and said spring shield.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOSEPH B. WILLIN GS. Witnesses:

A. L. WooDARD, OTTO BUTLER.