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Publication numberUS1211415 A
Publication typeGrant
Publication dateJan 9, 1917
Filing dateNov 6, 1916
Priority dateNov 6, 1916
Publication numberUS 1211415 A, US 1211415A, US-A-1211415, US1211415 A, US1211415A
InventorsGeorge C Cross
Original AssigneeGeorge C Cross
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Driven-well point and strainer.
US 1211415 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)




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Specification of Letters Patent.

Application led November 6, 1916. Serial No. 129,722.

To all 'whom it may concern Be it known that I, GEORGE C. Cross, a citizen of `the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Driven-Well Points and Strainers, of which the following is a specification. f

This inventionV relates Yto driven well points and strainers adapted for use in connection with 'water well pumps.

The device can be used either to drive the well or can be placed in wells made by other methods, the tubing serving as a casing for the well.

. The device comprises a strainer, and a point which telescopes over the strainer, so that when used. for driving the strainer is protected, but when used forpumping the strainer can be uncoveredto let in water to the pump valves.

Various other features of novelty will be apparent from the following description and the accompanying drawings.

In the drawings Figure 1 is a side elevation, partly in section, of the device, in position for driving. Fig. 2 is an enlarged sectional view showing the parts in position for pumping. Fig. 3 is an end view of the upper strainer. Fig. 4 is a side view thereof, partly in section. Fig. 5 is a section on the line 5-5 of Fig. 1.

Referringspecifically to the drawings, 6 indicates an upper tube section, preferably lined with brass and joined to a lower tube section 7 by a screw coupling. The lower end of the tube 7 is connected by a screw coupling 9 t0 a strainer tube 10 having perforations, and sleeved over this tube 10 is a lower tube 11 which carries the drive point* 12 the shank of which is fitted into the lower end of the tube and riveted thereto asindicated at 13. To make a comparatively tight joint, a steel gland 1or collar 14 fits in the top of the tube 11, and this collar confines keys 15 which are slidable in keyways 16 extending lengthwise along tube 10. This construction permits the strainer tube 10 tobe telescoped into the sleeve tube 11 when driving. An inner tube 17 isl fastened at its lower end within the tube 10 by means of a collar or shoulder 18 and countersunk screws 19, and this inner tube receives a perforated tube 20 t0 which the lower pump valve casing, indicated at 21, maybe attached. The perforated part of the tube 20 is surrounded by a cage consisting of rods 22 set in rings 23 at the top and bottom and covered by a fine screen 24, and when assembled the lower end of the tube 20 its in the upper end of the tube 17, as shown in Fig. 2, a tight joint being formed by a gasket 25 the inner edge of which also sets into a grooveat 26 in the pipe 20 to hold the parts in proper position.

In the use-of the device for driving, the parts shown in Fig. 1 are employed, and the tube 10 telescopes into the lower tube Patented Jane, 1917.

11, the coupling 9 striking against the steel collar 14, which also prevents splitting or i staving of the tubes, and the outer tube 11 thus protects and covers the strainer tube 10, preventing the entry -of dirt therein.

Whenthe well is driven, or the tube is placed in an old well, the `upper strainer is lowered into the piping and fitted into the upper end of the tube 17 the lower pump valve'21 being lowered therewith and set in; place. Then by lifting the outer piping the strainer tube 10 is drawn up from the lowerl tube 11, to open the casing to the water. Or the same result maybe accomplished by letting down a rod through the piping and the tube 17 to Contact with the head 40 on the point 12, and by driving said point down `the tube 11 uncovers the strainer tube. 41 are test holes in the tube.

By `the means described a well can be driven and the tube allowed to remain in the ground to form a casing for the strainer and pump parts which can be set in place by lowering them into the tube as above described, and during the driving operation the strainer is closed o' to prevent dirt entering the pipes and clogging the same. After the upper straineris inserted it serves to strain thewater 'before it passes to the lower punip valve. The upper strainer and the yvalve can be readily removed by letting down a proper tool to engage and withdraw the same, and .the whole forms Ya lcombined driving and pumping outfit which is practically nonclogging; i

4What Icliaim as new is;

1. The combination with an outer lower tube provided with a drive point, of a strainer tube telescoping therein with' a close joint between the upper end of the lower tube and the strainer tube, a casing 2. The combination of an outer lower tubehaving a drive point a strainer tube and a casing connected thereto, the strainer tube telescoping in the outer tube, a packed joint between said tubes, an inner tube in the strainer tube and spaced therefrom, said space being closed at its lower end, and an upper strainer connected at its lower end to th upper end of theinner tube and adapted for connection to a pump valve above.

3. The combination with a strainer tube and casing connected thereto, of an inner tube fixed within said strainer tube, and a tubular upper strainer spaced within the casing and connecting at its lower end with the inner tube and adapted for connection at its upper end to a pump valve, and a drive point telescopically connected to said strainer tube said tube being open ended to permit the drive point to be operated by a rod lowered through the upper strainer and the inner tube.

1n testimony whereof, do affix my signature in presence of two Witnesses.

GEORGE C. CRSS. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2744579 *Nov 18, 1952May 8, 1956Gerhardt Carl WWell point
US3168924 *May 10, 1963Feb 9, 1965Anderson Louis WPlastic well screen point
US5033554 *Aug 6, 1990Jul 23, 1991Joseph YounesWell point placement and removal apparatus
US5046568 *Mar 15, 1990Sep 10, 1991Cordry Kent EDriven groundwater sampling device
US5327981 *Sep 21, 1992Jul 12, 1994Gdc Engineering, Inc.Ground water sampling device
US5449045 *Mar 4, 1994Sep 12, 1995Cordry; Kent E.Drive point device
US5487431 *Jun 20, 1994Jan 30, 1996Drilling Services, Inc.Subterranean fluid sampling systems and methods
US5570747 *Apr 5, 1995Nov 5, 1996Cordry; Kent E.Drive point device
US5669454 *Sep 6, 1996Sep 23, 1997Cordry; Kent E.Drive point device
US5881809 *Sep 5, 1997Mar 16, 1999United States Filter CorporationWell casing assembly with erosion protection for inner screen
US6230820Dec 16, 1997May 15, 2001Kent E. CordryUniversal drive point device
US6416661Oct 7, 1999Jul 9, 2002Kent E. CordryUniversal well screen filter
U.S. Classification175/22, 166/236, 175/314, 166/105
Cooperative ClassificationE21B7/26