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Publication numberUS679131 A
Publication typeGrant
Publication dateJul 23, 1901
Filing dateNov 7, 1898
Priority dateNov 7, 1898
Publication numberUS 679131 A, US 679131A, US-A-679131, US679131 A, US679131A
InventorsLeslie H Thompson
Original AssigneeLeslie H Thompson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Strainer or filter for pump tubes or barrels.
US 679131 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

No. 679,|3|. Patented lul`y 23, I90Il.


(Application filed Nov` 7, 1898, Renewed Mar. 21, 1901.)

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` SPECIFICATION forming part of Letters Patent No. 679,131, dated July 23, 1901.

Application filed November 7, 1898. Renewed March 21,1901. Serial No. 52,238. (No model.)

T0 @ZZ whom, t may concern,.-

Beit known that I, LESLIE H. THOMPSON, a citizen ofthe United States, residing at Crowley, in the parish of Acadia and State of Lou isiana, have invented certain new and useful ImprovementsinStrainers orFilters forPump Tubes or Barrels; and I do declare the following to be a full, clear, and exact description of theinvention,such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to strainers or filters for pump tubes or barrels; and its object is to provide an improved construction of the same which shall possess superior advantages with respect to efficiency in use.

The invention consists, essentially, in a pump tube or barrel having formed near its lower end a number of holes or openings, a wire wound spirally around said tube or barrel, a cylindrical strainer or filter ot' wiregauze fitting over said wire, and a protectingcover of wire-netting fitting on said strainer, as hereinafter fully described and claimed.

In the accompanying drawings, Figure l is an elevation of the lower part of a pump-barrel constructed according to my invention,

the screen and wire-netting being broken.

away. Fig. 2 is a longitudinal section of the same. Fig. 3 is a sectional view of a modified construction. Fig. 4E is a detail elevation of the modification.

In the said drawings the reference-n u meral l designates a pump tube or barrel formed near the lower end with a number of holes or openings 2 for the admission of water thereinto. Spirally wound around said tube and secured thereto is a wire 3, and fitting over said wire is a wire-gauze cylinder La space being left between said cylinder and the pumptube, so as to allow full admission of the water to said holes or openings. The numeral 5 designates a wire-netting cylinder fitting over the wire-gauze cylinder for protecting the latter from injury.

In practice as the pump is operated the water will pass through the wire-gauze cylinder into the space formed between the same and the pump-tube and from thence through the openings 2 into said tube. By reason of the water-space formed,as aforesaid, between the strainer and the pump-tube there is no obstruction to the free passage of the water into the tube.

The wire-netting cover serves as a protec- Ition to the wire-gauze strainer and prevents the same from being injured or broken from any cause.

I have shownin Figs. l and 2 the preferred form of construction; but the construction shown in Figs. 3 and 4 may be employed, if desired.

Having thus fully described my invention, what I claim isl. The combination with a plain cylindrical pump-tube provided at its lower `end with holes or openings, of a wire spirally wound around the tube and secured thereto; and a strainer secured upon the wire-coil.

2. The combination witha pump-tube provided at its lower end with openings, of a Wire spirally wound about said tube, a wiregauze cylinder fitted over said wire with a space between the same and the tube, and a reticulated protecting-covering of larger mesh over the said cylinder' and terminating at the lower end of the saidv tube, substantially as shown and described.

In testimony whereof I afiix my signature in presence of two witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2489682 *Mar 1, 1948Nov 29, 1949Equipment Dev Co IncFilter element
US2668624 *Jul 14, 1949Feb 9, 1954Spraying Systems CoStrainer attachment
US2677466 *Feb 8, 1951May 4, 1954Proportioncers IncCore for filter elements
US2837032 *Jul 31, 1957Jun 3, 1958Ira Milton JonesFilter for use with periodic suction pumps
US3004669 *Jun 5, 1957Oct 17, 1961Process Filters IncFilter and automatic leaf shut-off therefor
US3087560 *May 15, 1961Apr 30, 1963Clayton Mark & CompanyWater well strainer
US3103789 *Jun 1, 1962Sep 17, 1963Lidco IncDrainage pipe
US3909414 *Jan 30, 1974Sep 30, 1975Edwin H DrathFilter unit and retaining plug closure
US5664628 *Dec 7, 1994Sep 9, 1997Pall CorporationFilter for subterranean wells
US5909773 *Jun 18, 1997Jun 8, 1999Pall CorporationMethod of repairing a damaged well
US6382318 *Sep 24, 1999May 7, 2002Weatherford/Lamb, Inc.Filter for subterranean use
US6715570Sep 17, 2002Apr 6, 2004Schumberger Technology CorporationTwo stage downhole drilling fluid filter
WO1994028284A1 *May 17, 1994Dec 8, 1994Pall CorpSand screen structure
Cooperative ClassificationB01D27/02