US690676A - Tubing-protector for oil-wells. - Google Patents

Description

Pafented n. 7, |962.

, 6. F. TAIT. TUBING PROTECTOR FR OIL WELLS.

(Application ledept. 2 0, 1901.)

(No Model.)

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mmm IIII 17 UNITED STATES y PATENT OFFICE.

GEORGE F. TAIT, OF MODONALD, PENNSYLVANIA.

TUBING-PROTECTOR FoRoIL-WELLS.

SPECIFICATION forming part of Letters Patent No. 690,676, dated January 7,1902.

v Application iled September 20, 1901- Serial No. 75,744. (N model.) I

To @ZZ whom t may concern.-

Be it known that I, GEORGE F. TAIT, a citizen of the United States of America, residing at McDonald, in the county of Washington wise injured; and it isthe object of the pres- Y and State of Pennsylvania, have invented certain new and useful Improvements in 'lubing-Protectors for Oil-Wells, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain vnew and useful improvements in tubing-protectors for oil-wells, and has for its object the provision of novel means whereby in case of a sudden jar the end of the tubing in an oil-well or Artesian well will be cushioned, thereby preventing thestripping of the threads or the bending of the tubing.

It often occurs when operating oil or Artesian wells that the end of the tubing by reason of a sudden jar will become bent o r otherent invention to overcome all such difficulties and to provide an anchor at the lower end of the tubing that will take up and effectually cushion the jar.

Another object 0f the present invention is to provide an anchor at the lower end of the tubing at the bottom of the well below the working barrel that will be extremely simple in construction, strong, durable, and comparatively inexpensive to manufacture.

With the aboveand other objects in view the invention consists in the novel combination and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claims;

In describing the invention in detail ref- 'erence is had to the accompanying drawings, forming a part of this specification,and wherein like numerals of reference indicate corresponding parts throughout the several views, in which- Figure lis a side elevation of my improved tubing-protector for'oil-wells. Fig. 2 is a vertical sectional View thereof. Fig. 3 is aside elevation of the union or coupling. Fig. 4 is a top plan view thereof.V Fig. 5 is a plan and side elevation of the upper sleeve arranged in the anchor. vation of the washer. Fig. 7 is a side and top elevation of a modified form of the buffer.

In the drawings the referencenumeral 1 Fig. 6 is a top and side elei indicates an oil-well tubing, which iseformed in sections and is coupled by means of a coupling 2. The reference-numeral 3 represents a cylindrical upper casingforming a portion of the anchor, said casing having a centralopening 4 formed therein, said opening having, preferably, a ared mouth.

The reference-numeral 6 represents an upper sleeve arranged in said easing, through which the tubing extends. A spiral spring 7 encircles said tubing between the lower face of the upper sleeve 6 and the upper face of the union 8, this union 8 carrying exterior screw-threads 9, engaging screw-threads 10, formed in the lower portion of the interior walls of the casing 3. The union 8 also serves to couplev the lower cylindrical section 11 of the anchor, said section having openings 12 formed therein to allow the oil to enter the anchorandthetubingl. Thelowerextremity of the said section 11 is interiorly screwthreaded, as shown at 14, to receive the screwthreaded plug 15. Upon said plug is arranged a spiral spring 16, which acts as a buer and carries on its upper end a metallic washer 17 and a flexible washer 18 to cushion the end of the tubing 1.

The operation of my improved tubing-protector for oil-wells is as follows: In case there is a sudden jar ofthe tubing 1 the coupling 2 will ride into the upper casing 3, depressing the sleeve 6 and contracting the spring 7. Simultaneously with this operation the end of the tubing willeome in contact with the flexible washer 18, depressing the same and contracting the buffer-spring 15, thereby taking up the jar and preventing the stripping lof the threads or the crinkling of the tubing, as would otherwise result.

The many advantages obtained by the use of my improved device will be readily apparlent from the foregoing description, taken in connection with the accompanying drawings.

It will be noted that variousechanges may be made in the details of construction Without departing from the general spirit of my invention. f

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a tubing-protector for oil and Artesian wells, the combination of tubing, cylindrical IOO casings surrounding the lower end of said tubing, a spring arranged in the upper end of said easing, a sleeve arranged upon said spring, a buer-spring in the lower end of said casing, and Washers arranged on the upper end of said spring, all parts being arranged and operated substantially as described and for the purpose set forth.

2. In a tubing-protector for oil and Artesian Wells, the combination of tubing, a coupling secured on said tubing, a cylindrical casing having an enlarged opening formed therein at the upper end thereof, a union interposed in said oasinghavnga central openingformed therein through which said tubing extends, a

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