US 2666241 A
Description (OCR text may contain errors)
Jan. 19, 1954 J. E. HALL, sR
BAND END CONNECTION Filed March 25, 1950 l AT lllll INVENTOR. A2556 5 Ha@ 5f:
Patented Jan. 19, 1954 UNITED STATES PATENT i OFFICE I 2,666,241 Y v BAND END CONNECTION 4Jesse E. Hall, Sr., Weatherford, Tex. pplcationMarch 23, 1950, Serial No. 151,456
This invention relates to improvements in fasteners, and refers more particularly to fastening devices for use on scratchers and centralizers employed in oilproduction to condition the well bore prior to cementing.
The essence of the invention resides in the construction of the collar extremities -by which the tools are attached to the casing or cylindrical objects lowered in thewell during the conditioning operation, including use on logging devices. The collar extremities are performed Vand 4doubled back to form registering keeper loops through which pintles are threaded. The perforations are so positioned as to produce staggering of the loops on abutting collar extremities and registration of said extensions with the cutaway portions on the opposite collar extremities.
- An object, therefore, `is to provide separable fasteners for'the collars of scratchers and cen-l tralizers which permit easy attachment or mounting, and easy removal to and from thev casing or support.
Another object is to provide separable fasteners of relatively rugged construction capableV of withstanding the abuse to which the collars are subjected in oil well conditioning operations.
Another object is to provide a fastener construction easily applied to the collars of the tools by welding theedges of separate perforated strips forming the keeper loops of the collar.
Other objects will be V4apparentfrom the description ,which follows...
' In theaccompanying drawings lwhich form a part of the specification and are to be read in conjunction therewith, and in which like reference numerals are employed to indicate like parts in the various views:
Fig. 1 is a side elevational view of a spiral centralizer utilizing fasteners which embody the invention.
Fig. 2 is a View taken along the line 2--2 in Fig. l, in the direction of the arrows.
Fig. 3 is an enlarged detail of a hinge plate showing the manner of perforating before being doubled back to form the keeper member.
Fig. 4 is a view taken along the line 4-4 in Fig. 3, in the direction of the arrows.
Fig. 5 is an enlarged disassembled perspective view of the keeper members and pintle before being welded to the collar.
Fig. 6 is a sectional view taken along the line 6 6 in Fig. 2, in the direction of the arrows.
Fig. 7 is a sectional view taken through one of the fasteners utilizing a flat pintle.
Fig. 8 is a sectional view taken through one of 4 Claims. (Cl. .Z4-201) the keepers, designated by the numerals I5b and their ends.
2 the fasteners in which a pintle of circular cross section is used, so that the fastener serves as a hinge between the sections of the collar.
Referring to the drawings, at I0 is shown a casing such as is commonly used in oil Well production. On the casing is mounted a spiral centralizer, designated asa Whole by the numeral I I. The centralizer has an upper collar I2 and a lower collar I3 with spiral bands'or blades IllA extending between the collars and welded thereto at Collars I2 and I3 are split diametrically, as shown in Fig. 2, and to the abutting edges or extremities of the collars are welded keeper members i5 and I'6, best shown rin Fig. 5. The manner of welding the keeper member to the collars is shown in Figs. 7 and 8. It will be noted that the outer flanges of the hingeI or those portions designated by the numerals Ia and Ilia, are Welded to the outside of the collars, as shown at Il, while the shorter turned back portions of i519, respectively, are welded flush with the inside surface of the collar, as shown at I8.
In Fig. 3 is indicated the method of perforating the keeper plates shown at I5. The same keeper may be used on opposite sides of the engaging collar extremities by turning the keeper plate through 180 so that the bottom becomes the top. The perforations through the plates are so located that when the plates are doubled back,
` as shown in Fig. 5, the tab extensions or loops of oneplate register with the cutaway portions of theother so pintle I9 may be threaded therethrough to hold th'ecollar extremities together.
ln Fig. 8 a similar type of construction is shown in which a cylindrical pintle 20 is used in place of the flattened strip I9, shown in Fig. 7, so that the two sections of the collar are hinged together and can swing about the pintle as a pivot. In the bottom of the lowest doubled back portion of keeper member It is a retaining stop 2 I, shown in cross section in Fig. 6. This stop prevents the pintle from sliding downwardly through the loops and after the pintle has been dropped in place, one side of the upper loop of plate i5 is bent inwardly, as shown in Fig. 6, to prevent dislodgement oi' the pintle upwardly from the loops.
While in the drawings there is shown application of the fasteners only to a centralizer, it is contemplated as well that fasteners of a like construction may be used on the collars of scratchers. When so used it has been found necessary to have but a single fastener in the cylindrical collars since the collars are suiciently exible to permit deformation so they can be easily Wrapped about From the foregoing it will be seen that thisV invention is one well adapted to attain all of the ends and objects hereinabove set forth, Ato
gether with other advantages whichareeby-ions and which are inherent to the invention. As many possible embodiments may 'ma of the invention without departing from the scope thereof, it is to be understood that all matter set .forth in, the speciiica'tion or shownrin the drawings to. bein'terpretedk asL illustrative and not a sense,
It will be understood that certainl .features andu'bcombinations are o'f utility and, may be employed, without. reference 'to other features andy subcombina't'ions 'This is contemplated Iby and within the "scope of the claims.
AHaving 'thus described my invention, I claim:
`1..,A .'fasLtene-relement ofv the character described, comprising` a member having a plurality of .aligned vlperfo-rations..andhaving a flange portion extending along said periorations across oneside of .the .aligning edges ofi ther perforations andIhaving another flange. :extendinga'long said perforationsat 'the oppositeV side ci the ,peroraf tions, one of saidflangesbeing wider than the otherA flange, said vmember ha-ying are-entrant bend :across-said. periorations, the portions ot saidV member :between saidl perforations constituting aligned loops adaptedto .receiveapintle thenein, wherebysaid fastener element isadapted to be securedto, one 4end-fof a split collar of an oiltwellsrewhiegy0r sentarme-w01, or the like, witl-r the wider flangeofe -'said member voverlapping andweldedto theouter surface of the -theother flangefofgsaid .member abutv d. weld ed tot-he endvsur-face of. the cellar, with 11b -irillerY `Slirnfaefof Seid member ii-ush with the; nenA sur-face; of the-collar .and with ,said .loopsf fsaidmernbers spaced forwardly et; the endv ef the lbllakr.V
`2. A fastener offthecharacten describedcompris-ina,y in, combination, two-complementaryfas.-
tener elements, each of said elements having a plurality of aligned perforations and having a flange portion extending along said perforations across one side of the aligning edges of the perforations and having another flange extending along said perforations at the opposite side of the perforations, one of said flanges being wider' than the other flange, said member having a rte-entrant bend across`A said perforar-tions, with the portions ofsaid meniberV between `said perforations constituting aligned loops adapted to receive a pintle therein whereby said fastener element is adapted to be secured to one end of a splitcollar of an oil Well scratching or cen tering tool, yor the like, with the Wider flange of said member overlapping and welded to the Y outer surface of the collar and the other ange of said member abutting endwise and welded to the end surface of the collar with the inner surface of said member flush with the inner surfacejof; the collar-"and with said loops offisa-id member space-d forwardly-:of the endo'f the col@ lar, the loops of said-'members being staggered relatively to eachother whereby lthe "leopsoff-said members align withv eachother when the members are broughtv together, and a pintleremovably insertabl'e intoV the aligning loops ofv both members whereby th-efastening elements and the ends 'of the Icollar to which they are secured are releasably 'fasten-ed together;
3; A 'fastener 'assetforth in-cla-i-m 2, and whichv includes a rigid stopat the-bottom ci vthe lower most loop of the fasteneradapted to stop-and hold the pint-le against passing downwardly-out o'f -said loops.
4. Afas'ten'er vasset 'forthinclaim 3, in which the top of the upper loop bof the 'fastener deformable inwardly,v whereby -a pint-le buried within said loops is conned'against `upward displacement from said" loops.
JESSE E. HALL, SR.
References Gited the file of thisy patent UN-,IIED STATES PATENTS Num-"berk Name Date 11,638,466: Banks Aug. 9, 1927` 250059791 Mimes June '25, 1.935 2,145,336 Jan. 3l, 19.39 251972531 vSini-th Apr. 1'6, 1'940 2,222,381 Tennefos Nov. 19, 1%0 2,258;052v Hail Oct. x7, 1941