US857313A - Well-screen. - Google Patents

Description

EETTEE STATES PATENT oEEioE.

GEORGE W. STANCLIFF, OF EL CAMPO, TEXAS, ASSIGNOR TO STANCLIFF WELL SCREEN AND MFG. 00., OF HOUSTON, TEXAS.

WE LL-SCREEN.

Specification of Letters Patent.

Patented June 18. 1907.

Application filed biarch 12, 1906. Serial (IQMWB To a, whom it may concern I known that I, GEORGE W. STAN- v CLIFF, acitizen of the United States, residing at'El Oampo, 1n the county of Wharton and which are composed of Wire wound around a section of tubing and spaced from the latter 'bymeans of a plurality of interposed ribs, an

example of thls class of screens being found in the atent issued to myself on the eighteenth ay of October, 1904, 772,843.-

I The objects of the present invention are to simplify the construction of this class of screens; and with this and other ends in view, which will readily appear as the nature of the invention. is better, understood, the

same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully'described andparticularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, nderstood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications Within the scope of the invention may be made, when .desired.

In the drawings, Figure 1 is a longitudinal sectional view illustrating one form ,of. the

improved screen in process of being menu-- mg another form of screen.

factured. Fig. 2 is a similar view illustrat- Fig. 3 is a transverse sectional view taken on the plane indicated by the line 3-3 in Fig. 1. Fig. 4 is a section on line m-:c, Fig. 2.

Corresponding parts 1n the several figures are indicated throughout by similar characters of reference.

The improved screen, or strainer as it is sometimes called, is composed of a section of tubing 1 of suitable dimensions, havinghplurality of apertures 2, 2 which may be of any desired size and shape, and which maybe 10- I cated as closely together as maybe desired and in any preferred order or arrangement. Exteriorly noon the tube section 1 there are placed a. plurality of spacing ribs 3,1 3,

'rily of this shape.

connected.

saidribs being disposed longitudinally of the 'tube. These ribs have been illustrated-as being of triangular cross section, but itis not to be understood that they are necessa- It is also to be understood t at any desired number of such ribs may be used; that they may be spaced any desired distance apart; and that they may The tube 1 has been shown as e'xteriorly threaded at the ends thereof, as will be seen at 6 and 7; upon the threadedv end'6 there is fitted a coup ing sleeve or collar 8 whereby the tube may be connected with the next adjoining section of the well casing; the opposite .end of the tube is adapted to be con nected by means of a collar 8 with the drive point collars are disposed close to the ends of the ribs 3 for the purpose hereinafter set forth. After the ribs have been ap lied, they are to be notched to form seats or the whirls of the wire constituting the screen proper, and this notching is accomplished by means of a cutting (p01, as 9, whereby notches -10 of any desired size and shape may be formed.

The windingof the wire, which latter is designated 12, is preferably commenced in the space 13 between the ends of the ribs and the collar 8, and wire is wound in said s ace until the latter is filled, and the wire is ush with the surface of the ribs; the'wire is then secured by soldering, and it maythen be wound under such tension as may be necessary to securethe most satisfactory result. After-the winding of the Wire has been fin ished, the end of the wire may be secured by soldering or in any suitable manner} It will be noted that by filling the spaoe 13 with the first whirls of the wire the exterior diameter of the screen is made substantially uni turned portions or lugs, here designated 4,

that are inserted into slots, here esignated 5. Upon the 0 ribs are mounted set collars 15 adjacent to of the tubing or casing. Both of the v posits or free ends of the which are placed short, but strong, coiled springs 16 inclosed within connecting frames 17 which are connected by means of bolts 18 with a ring or annulus 19 adjusted upon the tube 1 and bearing against a collar 20 which may be shrunk or threaded upon said tube.

' By tightening the nuts 21 upon the bolts 18 against the ring or annulus 19, the connecting frames 17 will be drawn in the direction of said ring .or annulus, thus causing the springs 16 to exert pressure against the col-- lars 15 and thereby exerting tension'inan outward direction upon the ribs 3. Thus, if said ribs should be displaced laterally by the action of the cutting tool, the action of the springs will instantly restore them to normal position. By this simple mechanism, the ribs may be held under strong tension while they are being subjected to the notchingop eration, as will be readily understood. B providing ribs which are tensioned by springs in this manner thesame will obviously exert a constant outward pressure upon the coiled wire so that the same will be held taut under all conditions. It would be possible to dispense with the springs 16, but it might then become necessary, in the event of displacement of the ribs, to temporarily suspend op erations while the screws or bolts 18 are be ing tightened for the purpose of taking up slack and restoring the ribs to a perfectly straight condition, or, in other words, putting the ribs u ler tension.

As illustrate. in Fig. 4 of the drawings, there are interposed between the ribs 3, 3 auxiliary ribs 23, 23, which have been illustrated as being trapezoidal in cross section,

and which are sufficiently smaller than the ribs 3 to insure their not being touched by the cutting tool. By employing these intermediate filling ribs, as they may be termed, the wire will be spaced from the body of the tube 1 with equal eiiiciency as though each rib were notched to form wire seats, while the work and strain upon the cutting mechanism is obviously reduced to a'considerable extent.

Having thus described theinvention, what is claimed is 1. In a well screen the combination With an apertured strainer tube and a collar u on one end portion thereof; of'ribs disposed ongitudina ly upon the tube and engaging it adjacent the collar there being a space between said ribs and collar, said ribs having notches in their outer edges, and a wire coiled around the tube and ribs and seated in the notches in the ribs, the first whirls of the coil being pecured within and entirely filling the space between the collar and the ribs.

2. In a well screen the combination with an apertured strainer tube and collars upon the end portions of the tube; of ribs disposed longitudinally upon and engaging the tube between the collars, said ribs having notches in the outer edges, 2. Wire coiled around the tube and ribs and seated in the notches 1n the ri'b'sythe first whirls of the coil being secured within and entirely filling the space between one of the coils and the ribs, and ribs interposed between and parallel with the firstn entioned ribs and having smooth outer faces contacting with the coiled wire.

3. In a well. screen the combination with an apertured tube; of ribs disposed longitudinally upon and having one end engaging the tube, means engaging the other end 0 the ribs for exerting a constant pull thereon, and

a wire coiled around the tube'and ribs and holding said ribs under lateral tension.

' 4. In a well screen the combination with, an apertured strainer tube; of a plurality of ribs dis osed longitudinally upon and having one cut seated in the apertures within the tube, said ribs having notches in their outer portions, means secured to the tube for exerting a constant pull upon the ribs, and a wire coiled around the ribs and tube and seated within the notches, said wire being held constantly under tensionby the ribs.

5. In a well screen thepombination with a strainer tube and a collar upon one end portion thereof; of ribs disposed longitudinally upon the tube and engaging it adjacent the collar, there being a space between the ribs and collar, said ribs having notches in their outer edges, a wire coiled around the tube .and seated in the notches in the ribs, one end portion of the wire being coiled within the space between the ribs and collar and ribs interposed between. and parallel with the first mentioned ribs and having smooth outer;

but not engaging the faces contacting with colled wire.

in the presence of two witnesses. GEORGE W. STANOLIFF.

Witnesses: v 1

J. A. DANIELSEN,

C. B. WILLIAMS.

In testimony that I claim the foregoing as my own, I have hereto aflixed my'signature re;

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