US1564977A - Elevator - Google Patents

Description

Dec. 8, 1925- -1,591,977

W. P. SCHLINGER ELEVATOR Filed June 16, 1925 Patented Dec. 8,v 1925.

h UNITED STATES WILLIAM I. SCHLINGER, OF OXNARD, CALIFORNIA.

ELEVATOR.

Application :filed June 16,4 19x23. Serial' No. 645,804.

To all whom it may concern:

Be it known that I, WILLIAM P. SGHLINGER, a citizen of the United States, re siding at Oxnard, in the county of Ventura and State of California, have invented a new and useful Elevator, of which the fol-y lowing is a specification. This invention relates to a class of devices employed in the well drilling art for grip-- ping certain parts such as the casing or sucker rod so that the same may be elevated or lowered in order to connect or disconnect their sections, such devices being commonly known as elevators; and this invention refers particularly to an elevator intended to handle sucker rods, although it is not the intention to llimit this invention to its em bodiment as a sucker rod elevator.

The primary object of this invention is to provide an elevator which upon engagement with a sucker rod or similar member will automatically lock the sucker rod in the elevator, and to provide such locking mechanism for the elevator lwhich may be readily released from the elevator so that the sucker rod may be rapidly removed from the elevator, and upon the removal of the sucker rod will force the locking or latching mechanism thereof into the positionyproper for again engaging another section of the rod. f

The elevators heretofore provided for sucker rods or the like have either required a manually `operated locking mechanism which must be inserted in place aft-er the elevator grips the rod, or the locking device has been diflicult to unlock so thatv the rod may be removed from the elevator, and one of the principal objects and advantagesof this invent-ion resides in the ease and rapidity with which the elevator may be locked to and disconnected from a sucker rod.V

Another object of this invention is to provide an elevator which 1s of durable and economical construction and retains the advantages heretofore set forth.

The objects and advantages of this invention' will be apparent from the description hereinafter contained andwill present themselves in the practice of the same. This invention includes certain novel combinations and association of parts, all of which will be apparent from the drawings and description.

In the accompanying drawings the preferred embodiment of the invention is set forth, and the invention is shown as embodied in the sucker rod elevator. Various modifications may be made in the device hereinafter described without departing from the spirit ofthe invention, and this invention is not limited toits use as a sucker rod elevator or to the specific construction or details of parts hereafter described.

The invention is of the scope set forth in the appended claims'.

In the drawings :',r y

`Figure 'l is a front elevation of this embodiment'of the invention with` the member or link employed for suspending the elevator broken away.

Fig. 2 is a vertical section on the line 2 2 y V of Figure l. e

3 isfa plan view of the elevator with the suspension member or link removed and with the latching mechanism in the open position. e

Fig.4`is applan View similar to Figure 3 with the latching mechanism in the closed v l position. 1 i v Fig. 5 is a section on the line 5-#5 of Figure. 3. Y

Referring tothe drawings, lv indicates `the body of the elevator which providestwo opposed trunnions 2 by which the elevator" is connected to'a suspension member 3. Said member 3 may be either asingle link or double links or any other preferred member for suspending the elevator. The trunnions 2 are preferably axially alined, the axis of the trunnions preferably extending throughr thecenter, or substantially through the center, of gravity ofthe elevator. Y f

lThe body 1 of theelevator provides a rod receiving way 8f preferably extending at right angles from the axis of the trunnions 2 and shaped to closely lit the rod or casing to be held by the elevator, The rod-receiving wa 3 preferably terminates in a cylindrical wa l 3a place-d so that when the sucker rod is forced into the elevator andagainst the end wall 3a of its receiving way, it will be held in substantially the center of theelevator' and in alinernentV with the axis ofthe trunnions 2. f

1 The top of the body'l is recessed, as indicated at 5, to accommodate a member-4c which operates as a closure for the rod-receiving way 3. Said member is preferably pivotally mounted on a vert-ical pin or screw 6 which is alined with the axis of the trunnions 2, the member-or closure 4 being substantially equal in height to the depth ot the recess 5 in the body 1, so that the top of said member or closure 4 extends iiush with the top ot the body 1. The member 4 is mainly of U-shape having tivo arms 7 and 8 which define a rod-receiving Way 9 substantially equal in Width to the rod receiving Way 3 and extending late-relly'from. the pin or-screW 6 mounting the member 4 so that in the closed position the receiving Way 9 intersects the receiving Way 3 at right angles, and in the open position said receiving Way extends diagonal to the receivingivay 3. The arm thus serves as a door 'for the receivingway 3. The outer edge of said arm is preferably shaped to engage the inner Wall of the recess 5 when in the open position,` as indicated in Figure, and the end of the arm 7 is cut away substantially flush with said receiving Way 8 .when in the position indicated in Figure S. rllhe arm 8 in the open position extends diagonally across` the receiving Wayl 3 and in position to be engaged by a sucker rod or the like When the same is forced into the elevator and rotate the closure 4 into the closed position indicated in Figure 4.

The recess 5 ot the body extends to the rear of the closure 4 and terminates in a guide Way 10 extending parallel to the rodreceiving way 3. Said guide Way 10 mounts a latch control member 11. The latch control .member 411 is rectangular in shape. The rear end 25ct the member 11 is bent slightly downwarthas indicated in Figure 2, to provide a handle for operating the member, the under portion 27 of said end26 beinggcut away. 28 indicates a rectangularopeningin the torW-ardend of the control member. l11, which slidably engages a vertically extendinglug 13 ofthe body 1. Said lugl'provides a vertically disposed openingiin Which is guideda dog 15 extending parallelto the rod-receivingivay 8 andV through an` opening 1 6 in airont Wall`18 yofthe latch controlling member 11. A pin- 19 extends transversely through the dog 15 between the front Wall 18 ot' thecontrol memberll and the-lugzl. A spring 20 is'co-iled around the dogl abutting said pin 19 and lug 13.

2,1, indicatesv a small depression in the closure 4 which engages the dog;15 in the open position, as indicated in Figure thus the closure is yieldingly maintained in the open position. The depression 21 is preferably ot insufficient depth'topermit,the-dog 15 to have a looking` engagement vwith the member 4 so that a pressure on the armB may disengage the dog 15 from the depression21 and rotate the closure 4 into the position indicated` in- Figure 4. In such posi.-` tion the dog 15 engages a recess 22in the arm 8 ot suliicient depth to provide a locking engagement between the arm 8 and dog 15 to thereby lock the closure 4 across the rod receiving `Way 3. The dog 15 may then be released from the closure 4 by a pull on 'the rear end 2G of the controlling member 11. By drawing said member 11 to the rear ot the elevator, the front Wall 18 will engage the pin 19 extending through the Vdog` 15 and thus Withdraw the dog 15 from the opening 22. In this position the sucker rod or Similar device gripped in the elevator may be pulled away trom the elevator through the rod-receiving Way 3 and as the rod is Withdrawn from the elevator, the same Will engage the arm 7 of the closure 4 and rotate the same into the open position.

23 indicates a plate Which. rests upon the top ot the elevator and is held in place-by sere-Ws 24inserted1into4 the body 1. Said plateisprovided with a rod-receivingway 25 complementary to the rodreeeiving Way 8 ot the body l. f

It Will be seen thatby this construction the closure 4 of the elevator may be yield'- inglyimaintained in the openT position, as indieated ini Figure 3,' and when engaged with a sucker rod the closure 4 Will automatical# ly be rotated into the closed position and locked inv place, thus prevent-ingthe sucker rod from being disengaged trom thev elevator. A slight pull -on the control member 11 of the elevator will release the closure 4 and permit the sucker rod to be Withdrawnfrom the elevator, and the Withdrawal of the elevator will position the parts again into the position for engagingk a second section ot' the rod.

By this constructionthe elevatork is provided With a closure or latch Which auto matieallyv locks the krod or casing in the elevator when the elevator is inserted therein and the rodor casing can be released from elevator by gripping the latch control member and exerting a-pull on said member in the direction tending to forcethe rodfor casing against the closure, a single pull in one direction releasing the locking means from the closure and withdrawing the elevator from the rod or casing;

lclaim:

1. A rod elevator comprisinga body having a rod receiving Way, a closure for the rear oit' the Way, a dog engaging the closure to yieldingly maintainl the closure across the Way in open position, a control member for ivithdraivingthe dog trom theclosure, means at the rear ot' the closure to form a positive loclringengagement with said dog in the closed position, and a shiftably mounted controlr member operative to move the dogifrom ythe locked position.

2. Arod elevator comprising, a` body' having; ayreceiving Way, ,av closure memberV for the Way, a dog, spring means yieldingly urging the dog against the closure member, and a control member for withdrawing the dog from the closure member, said member being sliiftable in a direction tending to pull the elevator away from the rod.

8. A sucker rod elevator comprising a body having a receiving Way, a pivotally mounted closure member having two arms defining a receiving way intersecting the first Way, one arm closing the first Way in the closed position and the other arm extending into the lirst way in the open position to engage a sucker rod inserted therein and pivot the second member across the Way, a dog yeldingly urged against the closure member to yieldingly maintain the member in the open position and engaging a recess in said member to lock the member in the closed position, and a control member slidably mounted by the body and operative to Withdraw the dog and release the closure member.

4. An elevator for casing, sucker rods or the like, comprising a body having a receiving Way, a closure forthe way, means eX- tending into the closure Way to engage av sucker rod inserted therein and yautomatically move the closure across the way, an automatic latch for locking the closure 1n the closed position, and a reciprocating latch t WILLIAM P. 'SCHLINGER

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