US1250509A - Sucker-rod joint. - Google Patents

Description

Patented De@ 18,1917

Fl rs 2 lNvi-:Nj'on 7 1 l f. l/. A y N if, l E iin! 6 The invention herenutilizes metallic rods .which are strong and less expensive than the Wooden rods ordinarily used. In addition, the simple 'and eiiicient coupling provides a swivel connection which cannot be uncoupled so long as the' parts are within the well tubing. l i l,

I claim: f

'1. 'In combination, sucker rod sections provided with coupling heads, each head.I

having exterior longitudinal fluid passa es Within the Well tubing, each head being a so exteriorly formed to engage the interior surface of the Well tubing and thereby maintain the approximate longitudinal alincment of said heads, one head being formed with a longitudinal socket opening through its lend and side and the other head having a complementary portion adapted to enter said socket by relative lateral movements of the heads at the exterior-of the well tubing, said heads providing corresponding transverse abutinents` to sustain end thrust and to maintain the heads against approximate independent longitudinal movement, said socket and complementary portion being relatively forined'toV provide for relative rotary movement of either lhead withy respect to the other when coupled together.

'2. In combination, sucker rod sections provided with a pair of coperating coupling heads, one of said heads .having a socket opening through the end and a side of the head -and contracted intermediate its length, the longitudinal axis of :said socket being approximately alined with the longitudinal axis of the head and having its interiorfsiirfaces approximately concentric with said' axis, the other head having acomplementary reduced portion the longitudinal axis of which is approximatel, alined with the longitudinal axisof the liead and having its exterior surface approximately concentric with said axis, said heads having abut- `ting transverse shoulders'to resist independ-- ent longitudinal movement in either direction when assembled, substantially as de- 3..In4 combination, sucker 'rod sections provided with enlargedA laterally-separable, coupling headspixed and in continuation of' the -ends offsaldL sections, the Vmeeting ends of. saidrods formed to laterally interlock against material longitudinal movement in eitherfdirectonaiijd to permit' lateral sepa-v ration when removed from the tubing, each head` having beveled-end longitudinal radil allyv projecting spaced wings to engage the well tubing with a-w'orkin fit to maintain said heads longitudinall a ined and to pi'event swaying of therody and to provide exterior 'interveninor longitudinal liquid passages, substantial as described.

-4. In combination, sucker rod sections provided with coupling heads, one of said heads having a socket with its longitudinal axis approximately alincd with the' longitudinal axis of the head and laterally opening througha side thereof and longitudinally opening through the end of the head,

thc other head having a complementary por tionv laterall movable to and from. said socket and interlocking therewith to normally maintain said heads in longitudinal alinement and against substantial independent longitudinal movement in either direction, the` longitudinal axis of said complementa ry portion being approximately alined with the longitudinal axis oif -its head, the interior and exterior surfaces of said socket and portion being formed to permit-independent rotation o said heads on their common longitudinal axis, one of said heads provided with a longitudinallyyielding catch pin alined with said axis of independent rotation, the other head having a socket normally receiving said pin and alined with' the longitudinal axis thereof.

5. In combination, sucker rod sections provided with coupling heads, one of said heads having a longitudinal central socket opening through the outer end thereof and having an interna] intermediate shoulder,

said socket throu hout its length opening through a side o the head andl having a central depression in its inner end wall, the other head having a complementary central longitudinal extension formed to laterally enter said socket and having approximatelyv cylindrical surfaces and an intermediate annular shoulderz said extension having a central longitudinal yielding catch pir' projecting from its end and adapted to enter said depression. In testimony whereof, I aiiix my signature in presence of two Witnesses.

, CLARK F.;RIGBY. -Witnesses:

` G. A. ,Moniiow,

E. CT Rioux.

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