US846874A

US846874A - Pump-packing.

Info

Publication number: US846874A
Application number: US24179405A
Authority: US
Inventors: Charles W Swan
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-01-19
Filing date: 1905-01-19
Publication date: 1907-03-12
Anticipated expiration: 1924-03-12

Description

PATENTED MAR. l2, 1907.

1 z/ 1/ A, n W

. C. W.,SWAN.

PUMP PACKING.

APPLIOATION FILED JAN.19, 1905,

f y d 4 UNITED STATES PATENT oEEicE.

CHARLES' W. SWAN, 0F BOLTON, KANSAS.

PUMP-PACKING.

Specification of Letters Patent,

Patented March 12, 1907.

Application tiled January 19, 1905. Serial No. 241,794.

/marked thereon.

My invention relates to packings for the working valves or pistons of pumps, and is particularly adapted and intended for use in oil-well pumps and other pumps for use in situations where sand is encountered or is likely to be encountered to such an extent as to make it impossible to use ordinary working valves or pistons on account of the cutting action of the sand.

In oil-well pumps, as well as in other deep- Well pumps, it often happens that sand is encountered in such quantity and of such character that it rapidly cuts away and destroys the packing between the working valve or piston and pump-barrel, causing leakage and oftentimes causing the working valve or piston to become choked. Various packings have been devised to overcome the action `of the sand, such as leather cups placed about the working valve or piston and rope wound about the working valve or piston below the valve-seat. Under some circumstances met with in practical operation of oil-wells neither of these forms ofpacking is eilicient for any considerable length of time.

My invent-ion has for its object to provide a packing for working valves or pistons which shall be sim le and inexpensive in construction and sha1 be effective to prevent leakage between the working valve or piston and the pum -cylinder, and consequently will revcnt t 1e cutting action of any sand whic 1 may be encountered.

With this obj ect in view my invention consists in the use of packing-rings of plastic metal or otherplastic material, as hereinafter described, so constructed and arranged that the movement of the Working valve or piston will serve automatically to take up the wear and to prevent leakage.

Referring to the drawings, Figure 1 is a vlongitudinal sectional view of a working barrel or pump-cylinder, showing my improved Fig. 2 is a longitudinal my improved working Ifig. 3 is a perspective the packing-rings, and

valve in position. sectional view of valve or piston.

view showing two of Fig. 4 is a perspective view showing one of the hard-metal packing-rings. l

In the drawings, 1 1S the pump-cylinder, here shown as what is commonly known as the working barrel of a pump for oil- Wells.

2 is the lower or standing valve at thelower end of the working barrel, through which the oil or other liquid enters the working barrel.

3 is the working or pumping valve, and 4 is the pump-rod. The lower or standing valve 2 may be of any desired construction and is here shown as of a construction commonly employed comprising a cage 5, within which is located a ball 6, which is received in a suitable valve-seat. The working valve or piston 3 is adapted to be reciprocated in the working barrel or pump-cylinder 1 by the pump-rod 4 and comprises a cage 7, in which is carried a ball 8, adapted to seat itself upon the valve-seat 9. The piston is provided below the valve-seatwith an extension 10, adapted to carry the packing by which leakage between the piston and walls of the barrel is prevented.

As thus far described, the construction is in general that commonly employed in oilwell pumps; but instead of the leathercu s or rope packing commonly carried by te extension 10 I make use ot the acking which forms the particular feature o the invention of this application. This ,packing consists of alternately-arranged rings of hard or non-plastic material and soft or plastic material arranged to be capable of movement longitudinally of the piston, or rather to permit the piston in its reciprocation to have a limited movement'through the packing-rings, the construction of the rings and of the portion of the piston on which they are carried being such that by the movement of thepiston relative to the rings the hard or non-plastic rings are caused to act upon the soft 'or plastic rings to upset or expand them. In order that this result may be secured, the soft'y or plastic rings 11 are formed, as shown in Figs. 2 and 3, with Haring or bell mouths 13 and the hard or non-plastic IOD TOD'

rings 12 are formed with tapered ends 14, as

shown in Figs. 2 and 4, so as to act as wedges against the flaring or bell mouths 13 ofthe soft or .plastic rings, and thus to upset or spread the soft or plastic rings to take up wear and to cause them to forni a ti htv packing between the piston' and the wa ls of the barrel.

vThe rings

11 and 12--are carried on a reduced portion of the extension 10 and are the end of the ,nut 16 next the packing-rings is preferably square.

The series o t rings 11 and 12, which are 4shown in'Figs. 1 and 2 as shown in number,

may be of any number desired, preferably not less than three, and in any caseshould not be suiicient in number or length to ll the space between the shoulder 15 and the ring 16, so that a space 19 will be left either' n vbetween .the Vu per packing-ring` ,and theshoulder 15 or b) 3`o etween the lowest ackingring and the ring 16, according to t e direction in'which the piston may be moving. ln Figs. 1 and 2 the working valve or piston is shownwith the packing-rings in the position they assume just kafter the piston has begun.

to move upward, which position relative to the piston they retain until the piston has reached the limit of its upward movement.

As the piston descends on its downward stroke the extension 10 slides through the packing-rings until the shoulder 15 comes in contact with the uppermost one of them, the

shoulderv coming in contact with this uppermost ring with considerable force and by reason of its conical shape tending to upset this ring. The impact ot' the shoulder 15 on the uppermost ring 11i's transmitted through tlie'series of

rings

11 and 12, each hard-inetal ring 12 actin to spread or upset the rings above and be ow'it. The continued downward movement of the piston carries the packing-rings downward, andas the piston bel ins to again move u ward the end of the rinr16` is brought against the lowermo'st )actking-ring 11, forcing it against the ring 12 immediately above it and causing it. to beA upset, the impact of the ring 16 on the lowermost ring v11V being transmitted lthroughout.

,free movement.

vflaring or be well as on the angle at whichtheiiaring or bell mouths `1 3v of the rings12 are formed and on the speed of movement of vthe working Y valve.y The angle of inclination of the flaring or bell mouths 13 is preferably about forty-` five degrees.

, The rings 11 vare of such internal and exter-` nal diameter ,as to itloosely upon the re' duced portion of the extension 10 and to fit closely within the barrel 1. The rings 12 are preferably'of such interior and exterior diameters as not to fit closely either upon the extension 10 or against the interior of the barrel 1, but to becapable of comparatively The square upper end of the ring 16 serves to prevent leakage between the.y inner surfaces of the ringsy and the extension 10..k

The hard ornon-plastic rings 12 arepreferably formed of steel, but may be of 'other' metal, it being essential'only that they be material of the rings 11.

than the metal of which the rings 12 are made-such as Babbitt metal, lead, aluminium, or copper, or soft brass, or hard brass, or

other alloys, or of slightly lastic non-1netallic inateria'l--the metal or a loy or non-metal! lic material to bev used depending u on the` metal-used for the rings 12 and `also i ependunderstood that l do not desire to be' limited to its application to any particular kind of i ing upon' the depth at which the working 'barinvention as y IOO pumps, as it may obviously be madeuse of in pumps of any kind in which 'it isimportant to secure a tight joint between the working valve or piston .and the pump cylinderor barrel;y

Having thus describedmy invention, what l claim, and desire to secure by VLetters Pat`` f ent, is

1. In a pump, the combination withy the working valve or piston,y of a series of pack ingerings of plastic and non-plastic metal alf terna-tidy arranged and mounted to slideon the valve or piston and means for limiting the sliding movement of the rings.

2. ln a pump, the combination with vthe.'

working valve or piston, of a series of packing-rings of :plastic and non-plasticlinaterial alternately arranged and mounted to slide on the valve or the series of packing-rings and causing each 1 limiting the sliding movement of the rings.

ring 12, as on the downstroke, to upset the working valve or piston of an extension serings 11 above and below it. The upsetting or spreading effect thusproduced in the` rings 11 will of course depend on the charac- I shoulder andfwith a removable abutment at. ter of the material of which the ringsy are the other end, a series ofpacking-rings car` Y made and onthe length of the space 19, as l ried on the extension and adapted to slide 3.1 vln a pump, the-coiiibination with the cured' thereto, provided at one end with a piston, the. plastic rings having n l Amouths and the non-plastic ringshaving taperedeiids, and means-for made of metal which is hard relative to the The soft orplastic vrings 11 may be made-fofany metal ksofter thereon, the combined thickness of the series of rings being less than t-he distance between the shoulder and the abutment the shoulder and abutment serving to limit the movement. of the packing-rings.

4. In a pump, the combination with the Working valve or piston, of an extension secured thereto, provided at one end with a shoulder and with a removable. abutment at the other end, a series of packing-rings earried on the extension and adapted to slide thereon the combined thickness of the series of rings being less than the distance between the shoulder and the abutment, comprising alternat ely-arran ged rings ofplastic and non- "plastic material, the shoulder and abutment serving to limit ing-rings.

5. In a pump, the combination With the Working val've or piston, of an extension secured thereto, provided atl one end with a shoulder and with a removable abutment at the other end, a. series of aching-rings earried on the extension am. adapted to slide the movement of the packthereon, comprising alternately-arranged rings ot plastic and non-plastic material, the rings of plastic material having flaring or bell mouths and the rings of-non-plastic material having tapered ends, the shoulder and abutment serving to limit the movement of the packing-rings.

6. working valve or piston )rovided with anextens'ion having a tapereti shoulder at one end and a removable ring'having a square end at the other end, of a series of packing-rings between the shoulder and removable ring inountedto slide on the extension, the combined thickness of the series oi rings being less than the distance between the shoulder and the abutment, the sliding movement of the rings being limited by the shoulder and removable ring.

7. In a ump the combination with the working va ve or piston provided with an extension having a tapered shoulder at one end and a removable ring having a square end at the other end,` of a series of packing-rings between, the shoulder and removable ring mounted to slide on the extension, thecombined thickness of the series-of rings being less than the distance between the shoulder and the abutment, comprising alternately-arranged rings ol' plastic and non-plastic niatei'ial, the sliding movement of the rings being limited by the shoulder and removable ring. A.

8. ln a pump, the combination with the working valve or piston provided with an extension having a tapered shoulder at one. end and a removable ring having a square end at the other end, of a series of packing-rings be- In-a pump, the combination with theA I i i i ing alternately-arranged rings of plastic and non-plastic material, the end rings of the se ries being of plastic material,v the sliding movement of the rings being limited by the shoulder and removable ring. l i

9. Ina uinp, the combination with the working va ve or piston provided with an eX- tension having a tapered shoulder at one end and a removable ring having a square end at the other end, of a series of packing-rings between thev shoulder and removable ring mounted to slide on the extension, comprising alternately-arranged rings of plastic and non-plastic material, the plastic rings having iiaring or bell mouths and the non-plastic rings having tapered ends, the sliding movement of the rings being limited by the shoulder and removable ring.

l0. 1n a pump, the combination -with the Working valve or piston rovided with an extension having a taperedp shoulder at one end and a removable ring having a square end at the other end, of a series of packing-rings between the shoulder and removable ring mounted to slide on the extension, comprising alternately-arranged rings of plastic and non-plastic material, the plastic rings having workin g valve or piston, of a pair of packingrings, one of plastic metal and the other of non plastic metal, carried by the valve or piston movable relative thereto and so arranged that the impact of the valve or istoii upon the rings causes the rings to be orccd 'together to ell'ect the expansion of the rings of plastic metal.

l2. Inf a pump, the combination with the working valve or piston, of a pair of packingrings, one of plastic material, having a vflaring or bell mouth, and the other of-non-plastic material, having a ta ered end in contact with the llaring or bel mouth of the ring of plastic material, carried by the valve or piston and so arranged that the impactof thc valve orpiston upon the rings causes the rings to be forced together to ell`ect the expansion of the ring ol plastic material.

13. In a pump, the combination with the working valve or piston, of a packing-ring of plastic metal carried by the valve or piston and arranged to be movable thereon, and means whereby the impact of the valve or piston upon the ring of plastic metal causes thc upsettii'ig or expansion of the ring of plastic metal.

14. In a pump, the combination with the working valve or pistoinoi a packing-ring of tween the shoulder and removable ring plastic metal having a Haring or bell mouth mounted to slide on the extension, compriscairied by the valve or piston and arranged IlO ' to be movable thereoii-7 and means carried by f In testimony whereof I aiix signature 'f thel Valve or piston adapted to fit the Haring in presence of*l two witnesses.' A. or'bell mouth of the ring of plastic metal, so I arranged that the impaot of the valve or pisl i CHARLES i 5 ton upon the ring ofplastic metal causes the Witnesses: i

upsetting or expansion of the ring of plastic I J B. ZIEGLER,

metal.l Y

t WALTER ZEGLER.