US1448233A - Drive-well point and strainer - Google Patents

Description

n Mart. 13, 1923. l 448 233 l v. H. NlcKERsoN DRIVE WELL IVOI'NT AND STRAINER Filed Feb. 2o, 192g nwwtoz l l @1k/tow ms Patented Mar. 13, 1923.

VICTOR H. NICKERSON, OF COTUIT, MASSACHUSETTS.

DRIVE-WELL POINT AND s'rRAINEa.

Application filed February 20, 1922. Serial No. 537,829.

To all whom t may conce/rn:

Be it known that I, VICTOR H. NioKnnsoN, a citizen of the United States, residing at Cotuit, in the county of Barnstable and State.

of Massachusetts, have invented certain new and useful Improvements in Drive-IVell Points and Strainers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved drive well point and strainer, and it has for one of its objects to generally improve upon devices of this class by producing one vof extreme simplicity and durability wherein the construction is such that the parts are not liable to become disarranged during the driving operation.

More specifically speaking, it is the principal object of the invention to provide a device of this class embodying among other details, an apert-ured tubular casing in which a wire mesh strainer is located, together with means between the strainer and casing for absorbing shocks to which the strainer is subjected.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a. part of this specific-ation and in which like numerals are employed to designate like parts throughout the same:

Figure 1 is aI central vertical sectional view, with parts in elevation, through a drive well point and strainer constructed in accordance with this invention.

Figure 2 is a view like Figure 1 showing the novel details n section.

Figure is an elevational view of one of the tubular anchoring members.

Figure 4 is a top plan view of the anchoring member shown in Figure 3.

Figure 5 is a vertical sectional view of said member.

Figure 6 is a transverse section .taken on the line 6-6 of Fig. 2.

Referring to the drawings in detail, the numeral 1 designates a tubular casing formed with a plurality of closely spaced apertures for passage of the fluid. Arranged inside of this casing and having its ends terminating short of the ends of the latter is a comparatively fine wire mesh tubular strainer 2. It may be conveniently stated here that experience has taught that during the driving of a well with a device of this class, the strainer is subjected to severe shocks and it is desirable to eliminate this as much as possible. Consequently, in the spaces between the ends of the strainer and corresponding ends of the casing, I provide novel shock absorbing means. The shock absorbing means in its preferred form comprises ring-like cushions 3 formed of elastic material, these being secured inside of the casing in any 'suitable way in a position to permit the opposite or adjacent ends of the strainer to abut them as clearly shown in Fig. 2. The preferred means for securing these cushions in place comprises a pair of tubular anchoring members l and 5 respectively, the first named of which is located at the upper end of the casing and formed at its outer end with a flaring flange 6 engaging the inner wall of the casing as shown. The inner end of this member projects into the strainer and one of the aforesaid cushions surrounds the same. To maintain the cushion in proper position on the member, the latter is equipped intermediate its ends with shoulders which are preferably in the form of a plurality of closely spaced tongues 7 struck outwardly therefrom. Although it is not essential, the lower tubular anchor 5 is preferably integral with the point 8 and it is likewise provided intermediate its ends with struck-nut tongues 7 providing the shoulders against which the lower cushion rests. It is of course understood that these tubular anchoring members are permanently secured to the casing 1 by any suitable means to prevent displacement thereof.

In a device constructed in accordance with the foregoing description, it will be seen that during the driving of a well, the shock to which the strainer is usually subjected, will be absorbed by the rubber or resilient cushions at the opposite ends thereof with which it abuts. l

By carefully considering the description in connection with the drawings, persons familiar with devices of this class will doubtless be able to obtain a clear understanding of the invention. Therefore, a more lengthy and detailed description is deemed unnecessary.

Since probably the best results may be obtained with the construction and arrangement herein-shown and described, this is taken as the preferred embodiment of the invention.

However, I Wish it to be understood that minor changes. coming Within the scope of the invention as claimed mayl be resorted to ii desired.

I claim:

l. A device of the class described including a tubular apertured casing, a strainer located therein, and shockabsorbing means between the strainer and the casing.

2. A device or' the class described comprising a tubular apertured casing, a cushion arranged inside of the casing adjacent one of the ends thereof, and av strainer also located in saidvcasing and having one of its ends engaged with said cushion.

3. A device of the class described comprising a tubular apertured casing, yeldable ring-like cushions secured therein, and a strainer also located in said casing and having its opposite ends arranged in abutting relation with said cushion.

4. A drive Well point and strainer comprising a tubular apertured casing, anchoring membersV telescoping into the opposite ends of said casing and carrying elastic -surrounding` said anchoring members -and interposed between said shoulders and the adjacent ends of said strainer.

6. A device of the class described including a tubular anchoring member having a plurality of spring tongues struck out therefroml intermediate its ends to `l'orm shoul ders, and a ring-like cushion surrounding said member and engaging said shoulders.

In testimony whereof l have hereunto set my hand.

VICTOR H. NICKERSON.

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