US1535625A - Sucker-rod elevator - Google Patents

Description

April 28, 1925.

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SUCmROD ELEVATOB'.-

Application tiled January at, 1923. Serial No. 615,049.

To all whom t may concern:

Be it known that 1, WALTER OBANNoN, .a citizen of the United States, residing at Tulsa, in the county of Tulsa and State o Oklahoma, have invented a new and useful Sucker-Rod Elevator, of which the following is a specification.

This invention aims to provide novel means for manipulatin the latches in a sucker rod elevator' an to rovide novel means lor taking the strain o the elements whereon the latches are ulcrumed.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

With the above and vother objects in view, which lwill appear as the description proceeds, theinvention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in vthe precise embodiment of the invention shown can be made without departing from the spirit of the invention.

ln the accompanying drawings Figure 1 shows in elevation a device constructed in accordance with the invention, partsfjbeing in section; Figure 2 is a plan wherein the upper portion of the body of the tool has' been removed.

The device forming the subject matter of this application comprises a body 1 provided with trunnions 2 adapted to cooperate with the usual suspension means 3. In one edge ot the body 1, a notch Il is formed. ln the opposite edgekof the body, an opening 5 is fashioned. Passages 6 are formed in the bo'dy 1, on opposite sides of the notch t, the passages communicating withthe opening 5. The constituent parts of the body l are held together by securing elements l and 8. -Latches 9 are loosely lulcrumed on'the securing elements 8 and are located in thepassages 6, the latches pro jecting into the notch 4. The latches 9 are supplied in their inner ends with seats 10 wherein are loosely pivoted the ends ol levers 11 ulcrumed on'the securing elements 7, the levers extending along the assages into the opening 5, and terminating in laterally extended linger pieces 19..

Any suitable spring means may be provided tor holding the latches 9 in thev position shown in liigurefso thatthey will retain the sucker ro'd in the inner end o the notch 4. If desired, depressions 15 may be formed in the body 1 and in the latches 9, the depressions being adapted to receive the ends of compression sprlngs 16 which serve to hold the latches in the position shown in -l 4 `igure 2. This specific spring construction, however is not insisted upon.

The sucker rod is thrust between the converging inn'eredges ot the latches 9, the latches tilt on their ulcra 8, the sucker rod asses to the rear end ot the notch 4 and 1s there held by the latches 9. When it is desired to swing the latches 9 to an inoperativey position and to release the sucker rod, this operation may be brought about by pressing the finger places 12 of the levers 11 together, the levers tilting on their lulcra 7 and swinging the latches 9 to such a pri/- sition that they no longer hold the sucker rod in the notch 4. Should a force be exerted upon the sucker rod, tending to separate it from the body 1, the thrust will be received on the latches 9, and the latches will bear against the body 1 at the points marked by the numerals 14, these ortions of the body acting as abutments which take the strain ed the pivot elements 8 for the latches 9 and prevent a shearing of the elements 8, it being recalled that the latches 9 are so mounted on the elements 8 that the latches will abut against the body 1 at the points indicated at 14, before any strain is rought upon the pivot elements 8. v

The inner vends ot the latches 9 are inclined toward each other and toward the mouth of the opening 4l, the result being that when a sucker rod in the opening, behind the latches, moves toward the mouth of the opening, the pressure of the sucker rod on the inner ends ot the latches will tend tol hold them closed.

What is claimed is 1. A sucker rod elevator comprising a body, pivot elements carried by the body, and latches having openings receiving the pivot elements, whereby the latches are mounted to swing on the pivot elements, the openings being ot greater diameter than move bodily, in the direction ol 'their lengths, and transversely ot the pivot elera ments, and engage the body, there y reducnl ing the strain on the pivot elements.`

2.1m a device of the class described, a body provided in one edge with a notch,

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the pivot elements, so that the latches may and provided in its opposite edge with an openlng, passages being formed in the body on opposlte-sides of the notch, the passages communicating with the opening, latches fulcrumed in the passages, the latches projecting into the notch, the latches being supplied in their inner ends with seats, levers fulcrumed intermediate their ends on the body, the levers heingloosely received at their inner ends in the seats oi the latches, the levers extending rearwardly through the passages, and through the openmemes ing, and helical compression springs interposed between the latches ai; their inner ends, and the side Walls of the passages, the said walls and the latches having means for retaining the springs.

In testimony that I claim the foregoing as my own, l have hereto alixed my signature in the presence of two Witnesses.

WALTER OBANNN.

Witnesses:

MILES KLIMA, E. E. Hmm.

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