USRE12732E - Hydraulic swivel - Google Patents

Description

g REISSUED DEG. 17, 1907.

H. G. JOHNSTON. HYDRAULIC SWIVEL. APFLIOATION Hmm JUNE 12.1905.

UNITED STATES PATENT OFFICE.

HORACE G. JOHNSTON, OF G ORSICANA, TEXAS, ASSIGNOR OF ONE-HALF TO WILLIAM P. STURM AND JACOB W. STURM, OFCORSICANA, TEXAS.

HYDRAULIC SWIVEL.

Specification of Reissued Letters Patent.

Reissued Dec. 17', 1907.

Original No. 742,667. dated October 27. 1903. Serial No. 153,650. Application fnr reissue led J une 12, 1905. Serial No. 264.96%

To all whom it may concern:

Be it known that I, HORACE G. JOHNSTON, a citizen of the United States, residing at Corsicana, in the county of Navarro andl State of Texas, have invented certain new and useful Improvements in Hydraulic Swivels and I do hereby declare the following to be a full, clear, and exact description l throu h said block, a hose-stem within said swive -stem, and means carried by the hosestem rotatably supporting the swivel-stem.

It further consists in certain. other novel constructions, combination7 and arrang menty of parts, as will be hereinafter fu ly described and claimed. f

In the accompanying drawing, the figure represents a longitudinal, vertical, central section through a hydraulic swivel embodyin `the features of the present invention.

l(ln the well-boring art, it is necessary to supply water to the cutting end of the wellboring tube and to rotate said tube while being supplied with water. As disclosed in the accompanying drawing, I contem late providing a swivel for supporting t e watersu ply pipe in a stationary condition while delivering water to the rotating tube.

l Referring to the drawingby numerals, 1 indicates a bail or clevi`s of any preferred form apertured at its ends, as at 2 2, and findingbearin s on the projecting reduced ends of the hol ow sup orting or trunnion-block 3, which block revo ubl surrounds the swivelstem 4 and is provide at its ends with locking-bolts 11 and washers 12 for preventing lateral play of the ends 2 of bail 1. The

trunnion-block 3 obviously may be sup'ported by a bail otherwise connected than as illustrated. The trunnion-block 3, as suggested is hollow and is formed with an interior annular chamber, which produces av comparatively lightand at the same time strong $6 structure. f

The swivel-stem- 4 surrounds the hose- `stem 5 and in operation revolves about the same. The lower end of the swivel-stem 4 is exteriorly threaded, and a bushing' 6 is threaded upon the same for forming a close joint with the ipe-section to be connected to the lower eng of said swivel-stem and for obviating danger of said stem shaking loose and unscrewing. In order to provide a close joint between swivel-stem 4 and hose-stem 5, the inner surface of the stem 4 is cut away, forming a. stuffing-box 7, which box is preferably iilled with hemp or other suitable packing material. A gland 8 is threaded into the lower end of said stem 4 for closing said stuifing-box 7 and retaining the packing in position. A collar 9 surrounds the stem 4 just below the trunnion block 3 and is adjustable vertically with respect to the stem 4, aset screw 10 being passed through the collar into engagement with the swivel stem 4 for sustaining the collar 9 in any adjusted position onstem 4, so that said collar 9 may be adjusted vertically upwardly on the swivel stem for taking up wear between the bearings 15 and collars 13 and 1.4, the collar 9 obviously by downward vertical movement permitting the collars 13 and 14 to be moved apart, and access to be had to the bearings 15 for renewal and repair of the arts land dismantling and assembling of tie parts when desired. Mounted above and resting upon said trunnion-block 3, is an annular collar 13, the s ace between said collars being maintaine by means of cones 15 or other suitable antifriction devices traveling within annular race- Ways 16 and 17, formed in the said collars for limiting the lateral play of said cones, or other antifiiction means. The upper end of swivel-stem is externally screw-threaded, and a nut 18, formed with an annular housing 19, is threaded thereon and screwed downv upon collar 1.4, with the housing 19 inclosing both collars 13 and 14 for retaining the same against vertical movement or other dislocation. VThe inner surface of the upper end of stem 4is preferably cutaway for a short distance, forming an annular stul'ling-box 20, designed to be filled with any preferredpacking, and a gland 21 ,closes the upper end of said box for retaining f the packing in position. Threaded upon the Iupper end of the swivel-stein ,4 is a cap 22, which is provided.'-,.,.fwitl1l an inner annular shoulder resting up'on the flange of gland21,

whereby a tight closure is madeI between the upper end of the swivel-stem 4 and the hosestem 5, a lock nut 22 being assigned to prevent displacement of cap 22. j

vA superimposed annular cap 23 is threaded upon the upper en d of the cap 22 and forms an annular housing about said stem 5, closed 'at the upper end by an annular shoulder formed integral with said bushing 23. This annular housing is filled by upper and - lower collars 24, 24, secured to said cap 23,

each provided with an annular raceway or groove for the reception of bearings, as will be hereinafter-mentioned. A central' collar 25 is fixed to stein 5 between collars 24-24 and is provided on both its edges with bearing-receiving grooves similar to those in collars 24-24, said collar 25 being spaced from 'the collars 214-24` by ball or other antifriction bearings 26-26, interposed between said collars and riding in said annular grooves or raceways.

A gooseneck 27 is threaded onto the upper end of the hose-stem 5 and carries a suitable union or couplin 28, adapted to receive any preferred form o supply pipe or hose 29.

In operation the bail 1, being supported by any preferred tackle carried by a suitable derrick, supports the elements carried by the trunnion-block, and the parts are broufrht into line with the section of the well-boring tube, and the lower end of the swivel-stem 4 is connected to the section of water-supply pipe of the well-boring mechanism, land the said section of supply-pipe, together With .the improved swivel, is' raised 'to a vertical position and connected withthe pipe already 1n the well. The water may now be forced through the hose connection 28, and it will find its way down through the hose-stem 5 and into the vsupply-pipe, from which it passes out 'undery the cutting edge of said pipe, the said supply pipe or tube bein given a rotary motion by any of the wellown means, said'supply-pipe and rotating means not .being shown Duringl operation the `swivel-stem 4,"collar 14, nut 18, caps 22 and 23, with collars 24 24, and the bushing 6 will revolve with the pipe, to which the parts are connected. The collar 13, bail 1, trunnion-- block 3, and hose-stem 5 and its hose connectionswill remain stationary. It will be apparent that the'water will be prevented from passing between 4swivel-stem 4 and hosestem 5 by means'of the packing within the stuffing-boxes 7 and 20.; y

Havmg thus'ully described my invention, what I claim as new, and desire to secure by Letters Patent, is.-

1. In a hydraulic. swivel, thecombination with a trunnion-block and a bail supporting the same, of a swivel-stem extending through l' said block, a hose-stem within said swivel- 1 stem, a collar surrounding said vswivel-stem above sald block, a slnnlar collar spaced stem, a bushing threade collar surrounding the same, a collar carriedby said stem, antifriction bearings interposed between said collars, a nut threaded on said swivel-stem above the u permost collar, and a housingl depending om said nut inclosing said antifrictio'n means.

3. In a-hydraulic swivel, the combination with a suitable support, of a swivel-stem, a collar surrounding the same and rotatably mounted upon said support, an annularvdepending housing carried by' said swivel-stem inclosing said collar, and' a hose-stem rotatably mountedvindependently of said swivelstern.

4. A hydraulic swivel, com risinga trunnion block, means for liftingft e same swiveled thereto, a swivel stein passed throu h said trunnion block, a hose stem withint e saine, means for supp'orting said trunnion block, adjustable vertically with relation to 5. Ahydraulic swivel, complrising a swivelstem, a hose-stern, within t e'swivel-stem, means for revolubly su portin the swivelupon 51e upperend of 'said swivel-stem, closing the upper'end thereof, the said upper end of the swivelstem being formed with an inner, annular space forming a 'stuffing-box between the said stem and the hose-stem, means for closing said stuiing-box, and means at the.

lower end of said swivel-stem for preventin water from enteringbetween said swivel an .hose stems. '1 A 6. A h Tdraullcpswivel, comiplrising a supporting b ook, a swivel stem, a ose stem discharging into said swivel stem, means adjustable with respect to the swivel stem for sustaining the supporting block, and means sustained by the supporting block for rotatably su porting the swivel stem.

7. AE drauhc swivel, comprising a supporting b ook, a swivel-stem passed through said supporting block, a :hose stein discharged into the same, means adjustably engaging said swivel-steml for sustaining said supporting block in position, a support connected with said swivel-stem above said supporting block, and bearins interposed between saidsupporting bloc and the support.

connected to the swivel-stem.

8. A hydraulic s'wivel, comprising a sup-1 porting block, a swivel-stern passed through said supporting block, a' hose-stem discharg: ',180

ing into the swivel-stem, a collar Xed to the swivel-stem above said supporting block and bearings interposed between said supporting device and said block, a collar surroundin said swivel-stem beneath said block, and means for securing said collar in position` at various points of adjustment longitudinally of the swivel-stem.

10. A hydraulic swivel, comprising a supporting b ook, a swivel stem extending ook, a swivel-stem passed through through and sustained by said block, a collar surrounding said stem adjustable longitudinally. thereof and adapted to engage said block for sustaining the same in position, and

means forseeuring said collar in position on rthe stem. f

1'1. A hydraulic swivel, eomprisirga block,

a swivel stem rotatably connecte to said block, a hose stem discharging into the swivel stem, adjustable meansI connected' with the swivel stem for at times supporting said block, .and means for sustaining the block in position for sup orting the swivel stem and permitting rotation thereof.

In testimony whereof, Ihereunto` afiix my signature in the presence of two Witnesses this 9th day of June, 1905.

HORACE e. JOHNSTON.

Witnesses:

H. EfTRAYLOR, EDWARD T. FENWIOK.

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