US1146312A - Pump. - Google Patents

Description

N. W. DAVIS.

PUMP. APPLICATION FILED JULY 3. 1914.

Patented July 13, 1915.

Q Attorneys TED STAES PATENT OFFICE.

NELsoN w. DAVIS, or 201m JEFFERSON, NEW YORK, Ass'reNon or ONE-HALIETO'. LorEEBEorHEns, or ron'r JEEEEnsoN, NEW YoEK.

A PUMP;

V Specification of Letters Patent. I

Patented July :13, 1915,

Application filed July 3, 1914. Serial N0.'848,998.

T all whom it may concern:

Be it known that I, NELsoN W. DAVIS, a citizen of the United States, residing at Port Jefferson, in the county of Suffolk and State of New York, have invented a new and useful Pump, of which the following is a specificationr .The present invention appertains to pumps, and relates more'particularly to a pump for Artesian or deep wells.

The present invention contemplates the provision of a novel and improved pump structure, adapted to be inserted down a well casing or pipe, and embodying unique means for anchoring the cylinderof the pump in place within the well casing and for closing the space between the pump cylinder and well casing to prevent the collection of sediment or foreign matter therein.

Another object of the invention is to provide a stationary valve cage detachably engaged within the pump cylinder in a unique manner, in combination with a reciprocatory valve cage of piston mounted in the cylinder above the stationary valve. cage and having unique means engageable with the stationary valve cage, whereby" th'e'p'ump rod carrying the reciprocatory valve cage may be manipulated to properly insert and secure. the

pump structure within-the well casing, to remove the stationary valve cage, or to remove the entire pump structure from the well casing. g

With the foregoing and other ob ects in view which will appear as the description proceeds, the invention-resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed. can be made within the scope of what is claimed without departing invention. The invention has drawing, wherein- Figure 1 is a longitudinal section of the pump as applied within a well casing. Figs. 2 and 3 are enlarged crosssections taken on the lines 2-2 and 33, respectively, of-

Fig. 1.

In carrying out the present invention,

there isprovided a tubular pump cylinder or sleeve 1, which is only slightly smaller in diameter than the valve casing or p pe 2,

and which'is insertible downwardly into the said casing. A nipple 3; is threaded into the lower end of the cylinder or sleeve 1, while a dog coupling or cuff 4 is threaded .upon the lower end of the nipple 3. The nipple 3 is provided with right and left hand threads at its ends which engage the interior threads of the adjacent endsof the cylinder 1 and the coupling or cuff '4. A pair .of looped dogs 45 have their ends riveted or otherwise secured within the lower end of the coupling or cuff 4,.and are adapted to frictionally engage the interior of the well casing 2 to prevent the rotation ofithe coupling or .cufi' 4 when the pump structure is inserted into the casing. Surrounding the intermediate portion of the nip 1e 3, is a compressible and expansible, gas et or ring 6, of rubber or other suitable material, and' the edges of which are adapted to abut or rest against the adjacent ends of the cylinder 1 andcoupling 4. The-cylinder lispro vided at its upper end with an outer annular rabbet 7, withinwhioh is secured or mounted aring 8 of rubber or other expansible material which will expand snugly within-the casing 2 toclo'se the upper end of the space between the cylinder ,1 and casing 2.

A stationary valve cage or arched spider 9 is'disposed-within the lower end portion of the cylinder or sleeve 1 directly above the nipple 3, and is provided with a lower annular valve seat 10, upon;which a suitable valve -11-is normally seated. This valve 11 is confined within the cage or spider 9, to move to and from the seat 10. The valve seat or lower annulus 10 of the valve cage 9 is equipped with a pairof diametrically opposite depending fingers 12 which are provided-at their lower ends with oppositely extending hooks 13 engageable under the inwardly projecting lugs 14 secured to diaend of the pump rod 16 attached to itscrestportion; The cage or spider 15 is provided with the lower annulus or valve seat 17 upon which a suitable valve 18 is normally seated.

The valve 18 is confinedwithin the cage or v spider 15 to move. to and from thevalve seat 1 The valve seat or annulus 17 is equipped at diametrically opposite points with depending fingers 19 which are provided at their lower ends with double hooksor T- heads 20. The independent hooks or arms of the double hooks or'T-heads 20 are adapted to engage under the arched arms of the cage or spider 9.

In assembling the parts of the pump, and in applying the pump within the valve casing 2, supposing the several parts to be detached or separated, the nipple .3 1s first threaded into the lower end of the cylinder 1 and the gasket or ring 6 placed upon the nipple. The coupling 1' is then threaded onto the lower end of the nipple 3, to such an extent, as to hold the gasket or ring6 between the adjacent ends of the cylinder 1 and coupling 4; without spreading or expanding the gasket appreciably. The valve cage or spider 9 is then dropped into the cylinder 1 and manipulated so that the hooks 13 thereof engage under the lugs 14 of the nipple 3. Finally, the valve cage or spider 15 is inserted into the cylinder 1, and the T-heads 20 are passed between the arms of the cage or spider 9 and swung to engage under certain of the said arms. The device is then inserted into the well casing 2 and forced downwardly therein to the point desired, the dogs 5 frictionally engaging the interior of the casing 2 and preventing the rotation of the coupling or cuff 4:- Tt is also to be observed that the expansible ring 8 secured to the upper end of the cylinder or sleeve 1 will expand snugly within the casing 2 to close the upper end of the space between the cylinder 1 and easing 2, The

pump rod 16 is then properly rotated, so as to rotate the valve cage or spider 9 in such a direction due to the engagement of the T- heads 20 with the cage or spider 9, to cause the nipple 3 to be rotated for drawing the cylinder 1 and coupling etoward each other 7 which Will compress and expand the gasket 6 so that it engages tightly within the well casing 2. Thus, the gasket 6 closes the lower end of the space between the cylinder 1 and the casing 2, and also assists in anchoring the cylinder within the well casing. The hooks 13 are so arranged, and the screw threads of the upper and lowerends of the nipple 3 are such, that when the pump rod is rotated, as above noted, to expand the gasket 6, the hooks 13 will. disengage the lugs 14, and the backs of the fingers 12 will come to rest against the lugs 1e when the cage or spider 9 has rotated to one-half a revolution, to properly rotate the nipple 3 with the cage or spider 9 for the expanding of the gasket 6. The cage or spider 15 is then detached from the cage or spider 9, by giving the pump rod 16 a slight turn, to disengage the T-heads 20 from the cage or spider 9, which will enable the cage or spider 15 to be raised and reciprocated for operating the pump in the usual manner in a device of the present character.

integers It is apparent thatthe reciprocatory cage or piston 15 may be withdrawn from the cylinder 1 and casing 2 at any time by lifting or elevating the pump rod 16. Should it be desired to also remove the stationary cage or spider 9, this may be readily accomplished by lowering the cage or spider 15 so that the T-heads or double hooks 20 project between the arms of the cage or spider 9. Then, by giving the pump rod 16 a proper turn to engage the T-heads or hooks 20 under the respective arms of the cage or spider 9, without engaging the hooks 13 with the lugs 14, the said cage or spider 9 may be elevated with the cage or spider 15 so as to be removed from the cylinder and -well casing. Conversely, while the cage or spider 9 is engaged to the T-heads or hooks 20, the two cages or spiders may be simultaneously lowered into the well casing and cylinder 1, to be replaced to their proper positions, as will be obvious from the foregomg.

When it is desired to remove the entire pump structure from the well casing, the cage or spider 15 is first engaged to the cage or spider 9, as above indicated, and the pump rod 16 is then properly turned to rotate the cage or spider 9 in the proper direction to engage the hooks 13 under the lugs 14 of the nipple 3. Then, by lifting the pump rod 16, the cage or spider 9 will not only be lifted by the cage or spider 15, but the nipple 3 and consequently the cylinder 1 and coupling 4 will be elevated therewith, it being preferable, prior to the removal of the pump, to give the nipple 3 a few turns in the proper direction to loosen the coupling 4 slightly for enabling the gasket 6 to contract.

With the present pump, the cylinder 1 may occupy the greater portion of the space within the corresponding portion of the well casing 2, to reduce to a minimum the space between the cylinder 1 and the well casing. It is also to be noted that the expansible ring 8 at the upper end of the cylinder 1, prevents the sediment or foreign matter from-precipitating or accumulating within the space between the cylinder 1 and well casing.

The present pump requires no special tools to insert or withdraw the several parts thereof, and the present pump reduces to a minimum, the amount of labor and time necessary for applying and removing the parts. The present invention also prevents the parts of the pump from being lost with in the well casing and the present device is of advantage in other obvious respects, which need not be enumerated.

Having thus described the invention, what is claimed as new is:

1. In a pump, a cylinder, a nipple threaded into the lower end thereof, a dog coupling threaded onto the lower end of the nipple, an expansible gasket surrounding the nipple between the adjacent ends of the cylinder and coupling, and a valve cage disposed within the cylinder directly above the nipple, the valve cage and'nipple having interengageable means.

2. In a pump, a cylinder, a nipple threaded into the lower end thereof, a dog coupling .threadedonto the lower end of the nipple, an expansible gasket surrounding the. nipple between the adjacentends of the cylinder and coupling, a valve cage disposed within the cylinder .directly above the nipple, the nipple having inner lugs, and the valve cage having depending fingers provided with hooks at their lower ends engageable under the said lugs.

3. In a pump, a cylinder, a nipple threaded into the lower end thereof, a gasket carried by the nipple and adapted to bear.

against the lower endof the cylinder, a stationary valve cage mounted within the cylinder directly above the nipple, the nipple and stationary valve cage having means adapted" to interengage when the cage is rotated in one direction, and a reciprocatory valve cage mounted within the cylinder above the stationary valve cage, the two valve cages having portions adapted to interengage when the reciprocatory valve cage.

is'rotated in either direction.

4; In a pump, a cylinder, a nipple threaded into the lower end thereof, a gasket ca'rried by the nipple and seatable against the lower end of the cylinder, and a valve cage mounted within the cylinder above thesaid nipple, the nipple having inwardly projecting lugs, and the valve cage having depending fingers provided with hooks at their lower ends engageable under the said lugs.

5. In a pump, a cylinder, a nipple threaded into thelower end thereof, a gasket car-' ried by the nipple and seatable against the lower end of the cylinder, a stationary valve cage mounted within the cylinder above the said nipple, the nipple having inner lugs, and the stationary valve cage having depending fingers provided with hooks engageable under the said lugs, and a reciprocatory valve cage mounted within the cylinder above the stationary valve cage and having depending fingers provided with -T-heads engageable with the stationary valve cage.

6. In a pump, a cylinder, an expansible gasket carried by the lower end thereof, It

means carried at the lower end of the cylinder for expanding the gasket, and an expansible ring carried by the upper end of the cylinder. In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

. v NELSON W. DAVIS. Witnesses:

G. F... HALLooK, A. JAY TEFFT.

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