US1404487A - Bailer bottom and method of manufacture - Google Patents

Description

J W. SLOAN.

BAILER BOTTOM AND METHOD OF MANUFACTURE.

A P P L I C A T l O N F l L E D F E B 2 I I l 9 2 0.

1,404,4 7. Patented Jan. 24,1922.

FELL H JAMES W. SLOAN, 0F TULSA, OKLAHOMA.

BAILER BOTTOM AND METHOD OF MANUFACTURE.

Specification of Letters Patent.

Patented Jan. 24, 1922.

Application filed February 27, 1920. Serial No. 361,886.

T 0 all whom it may concern Be it known that I, JAMES W. SLOAN, a citizen of the United States, and a resident of the city of Tulsa, in the county of Tulsa and State of Oklahoma, have invented certain new and useful Improvements in Bailer Bottoms and Methods of Manufacture; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates to bailer bottoms and methods of manufacturing the same more particularly for use in connection with oil wells.

Bailer bottoms as heretofore constructed have usually been forged, which operation is expensive. In a co-pending application, Serial No. 192,349, filed September 20, 1917, of which the present application is a continuation in part, a method of making bailer bottoms is disclosed which consists in first forming a blank in the form of an integral casting, then machining it down to proper size after which the valve member is out from its seat member.

It is an object of the present invention to provide means for forming a bailer bottom having integral and inseparable valve members and seat members without forming a single blank from which both members are subsequently out.

Another object of the invention is to provide a bailer bottom constructed so that the valve head cannot contact with the walls of the bailer tube.

Other and further important objects of this invention will be apparent from the disclosures in the drawings and specification.

The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings Figure 1 is a fragmentary sectional view of a vertical bore or shaft in which a bailer embodying my invention has been lowered, showing the valve opened and the column of liquid to be bailed above the bailer bottom.

Figure 2 is a vertical section on an enlarged scale of the bailer bottom and lower part of the bailer tube.

Figure 3 is a view similar to Figure 2 showing the valve lifted and tilted.

Figure 4 is a sect-ion. on the line 41- 1 of Figure 2.

Figure 5 is a plan view. of the lower half of tthe flask in which the seat member is cas As shown on the drawings The earth or rock through which the well or bore 2 has been driven is'indicated by the reference numeral 1. Inserted in the bore 2 is the bailer comprising a tube 5 of any suitable construction having secured thereon a bail 6 to which is secured one end of a cable 1 passing over a pulley 3 to any convenient hoisting apparatus.

The bailer bottom comprises a valve memher 7 and a seat member 8. The latter is cylindrical in form with an inturned flange 9 forming the seat for the head 10 of the valve member 7. A shoulder 11 is formed adjacent the lower part of the body of the member 8 to engage the lower end of the baller tube 5 and thereby prevent the member 8 from being driven upwardly into the tube 5. Rivets 12 are provided for attaching the member 8 to the tube 5. I

The stem of the valve member 7 is formed with a plurality of ribs 13, conveniently four as shown, adapted to retain the valve in a substantially central position within the bailer bottom while at the same time allowing ample space for the passage of water, sand, eto., through the valve.

These ribs are also arranged to project sufficiently far so that by contact with the valve seat and the inner wall of the cylindrical part of the member 8, as indicated in Figure 3, the head 10 is prevented from contacting with the tube 5.

One pair of flanges are extended downwardly to provide a tail-piece 14 adapted to contact the bottom of the bore, as shown in Figure 1. and open the valve.

In manufacturing the bailer bottom the valve member 7 is first made, preferably by casting, and machining the casting to proper size. The under part of the head 10 is then coated, as at 16, with any suitable material such as graphite to prevent molten metal adhering thereto. Then a sand core 15 is formed around the stem and the valve member and sand core are then used as a single core for casting the ring seat member 8 therearound in suitable flask 17. After the metal has cooled the core 15 is shaken out, when by reason of the coating 16 the connection between the head 10 and the ring seat member 8 can be readily broken. The bailer bottom may then be secured in the bottom of the tube 5.

I am aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention- A method of making articles of the class described comprising forming a valve member having an enlarged portion at each end thereof and casting around the valve member a ring member forming a valve seat adapted to cooperate with one of the en- P. F. CORGIAT, A. F. BoURNE.

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