US1527534A - Elevator - Google Patents

Description

Feb. 24, 1925.

L. J. BLACK ELEVATOR 2 Sheets-Sheet 1 Filed Dec. 1, 192:5

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L eeJBZcLf/V Feb. 24, 1925. 1,527,534

L. J. BLACK ELEVATOR v Filed Dec. 1, 1923 2 Sheets-Sheet 2 2 1 9o5 v Patented Feb. 24, 1925.

LEE J. snack, or BEAUMONT, TEXAS.

ELEVATOR.

Application filed December 1, 1923. Serial No. 678,009.

To all whom it may concern.

Be it known that I, LEE J. BLACK, a citizen of the United States, residing at Beaumont, in the county of Jefferson and State of Texas, have-invented certain new and useful Improvements in Elevators, of which the following is aspecification.

This invention relates to improvements in elevators and more particularly to a device of this character adapted for the hoisting of tubing, sucker rods and the like from oil wells. v

An important object of the invention is to provide a device of this character having a shiftable section closing the opening of the elevator through which the tubing or sucker rod is inserted into the elevator, which shiftable section when swung to closed position is automatically latched.

A further object of the invention is to provide an elevator embodying a shift-able section havingan automatic latch,-as above set forth, in which the construction is such that the weight of the tubing or rods when applied to the elevator will be likewise applied to the shiftable section and effectually prevent separation of the. latching connection between the same and the main body of the elevator.

A. still further object of the invention is to provide in a device of this character means for holding the shiftable section in the open position which is readily releasable and which means has associated therewith means acting upon release of the holding means to assist in swinging theshiftable section to the closed position.

These and other objects I attain by the construction shown in the accompanying drawings, wherein for the purpose of illustrationis shown a preferred embodiment of my invention and wherein Figure 1 is a plan view of an elevator constructed in accordance with my invention, the elevator being closed;

Figure 2 is a similar view, the elevator being opened; 7

Fi ure 3 is a side elevation of the elevator closed;

Figure 4 is a similar view of the elevator opened;

Figure 5 is a section on the line 5-5 of Figure 1;

Figure 6 is a section on the line 6-6 of Figure 3; and

Figure 7 is'a perspective of the elevator.

Referring now more particularly to the drawings, the numeral 10 indicates the main body of the elevator consisting of a single block or body of metal having formed therethrough an opening 11 for the reception of the tubing or rods as the case may be, which opening extends through the side wall of the elevator body so that the rods may be readily inserted therein. The sides of this body at opposite sides of the opening are provided with means, as at 12, whereby a bail 13 of any suitable character may be secured thereto. In the present instance this means is disclosed as trunnions with which are engaged the ends of a U-shaped bail but this means can be altered as desired.

At one side of the opening 11 and between the outer edge of the opening and an adjacent trunnion 12, the body 10 is provided with an outstanding lug or ear 14 adjacent its lower edge and adjacent its upper edge with an outstanding wing15. The ear 14 and wing 15 are provided with aligned openings 16 in which are engaged the ends of a pintle 17 of a swinging closure section 18, this closure section being of such form as to completely close the mouth of the opening 11 when it is in the proper position with relation to the body 10. The inner face of the closure section has formed therein a notch 19 which when the closure section is in the closed position combines with the opening 11 of the body 10 to provide a circular opening for the reception of the tubing or rods. This opening will be of such size that it receives the small section of the tubing or rods. In the present instance I. have illustrated a section of tubing 20, which section is as usual provided at its opposite ends. with coupling members 21 which are of greater size than the body of the tubing. In

this construction the opening formed by the combination of the notch 19 of the closure section and opening 11 of the body section 10 will be of such size that it will receive the tubing 20 and will prevent passage of the coupling member 21 thereof.

The wing 15 of the body section 10 has its outer face curved with the center of the opening 16 of the wing as a center and with the distance between the adjacent edge of the opening 11 and the center of the opening as a radius, with the result that the outer face of this wing forms a continuation of the edge of the opening 11. The side walls of the opening 11 are provided at their upper edges with notches 22, the purpose of which will presently appear.

The closure section 18 is provided with a lug 23 havimg an opening 24 formed therethrough through which the pintle 17 is directed, the construction of the pintle and of the opening being such as to permit both rotative and vertical movement of the closure section 18 upon the pintle. Between the lower face of the wing 15 of the body 10 and the lug 23 of the closure section a spring 25 surrounds the pintle and tends to force the lug 23 and accordingly the closure section 18 downwardly. That wall of the closure section next adjacent the pintle is provided with an arcuate curvature corresponding to the are through which the closure section must swing in moving to the closed or open position. The. upper edge of this closure section is provided with outstanding flanges 26 at its side edges, the inner ends of these flanges or those en'ds which are disposed innermost when the closure section is in the closed position, being provided upon their lower surfaces with lugs 27 complementary to and adapted for engagement in the recesses 22 formed in the body 10 at the sides of the opening 11 thereof. The flange 26 of the closure section 18 next adjacent the pintle 17 overlies the edge of the wing 15 to ride thereon and the upper surface of the wing 15 from the edge of the adjacent recess 22 to the outer end at the outer surface of the wing is given a slight bevel, as more clearly shown at 28 in Figure 7. At such outer end the wing 15 is provided upon that face thereof remote from the body 10 with an outstanding lug 29 against which the closure section 18 engages when the closure section is in the fully opened position. At a point in its upper surface correspondin'g to the position of the lug 27 at the pintle side of the closure section 18, the upper beveled surface of the wing is provided with a notch 30 receiving the lug when the device is in the open position so that the closure section will be held in such open position and at the limit of its opening movement.

With the closure section in the open position, just described, a slight jar of the hand will disengage the lug 27 from the notch 30 and since the pressure of the spring 25 tends to force the closure section downwardly the closure section will move down the inclined upper face of the wing 28 and swing about its axis until it moves to the closed position, at which time the notches 22 will receive the lugs 27 permitting the entire closure section to drop into a position where its upper surface is flush with the upper surface of the body 11 and where it is held by the pressure of the spring against opening movement. It will be obvious that a section of tubing or the like havin first been inserted and the closure thus effected, if the tubinlg or elevator is shifted so that the weight of the enlarged portions thereof, as the couplings 21, comes into engage- 'ment with the upper surface of the closure section, the closure section is very firmly forced into locking position and the lugs 27 cannot escape from the notches 22 until this weight is removed. To release the tubing from the elevator the tubing is supported in the usual manner and the elevator lowered until the closure section 18 is relieved entirely of the weight, at which time the operator may insert his fingers in a depression 31 provided in the outer face of the closure section 18 for this purpose: and by exerting pressure elevate the closure section 18 until the lugs 27 are released from the notches 22 at which time the closure section may be swung into the closed position and may be yieldingly held, as hereinbefore set forth.

It will be obvious that an elevator constructed in accordance with my invention provides an eflicient lock to prevent accidental disengagement of tubing or the like therefrom during a hoisting operation, which look is readily engaged or disengaged in inserting or removing the tubing from the elevator. It will furthermore be obvious that the construction of the device as hereinbefore set forth is capable of a considerable range of change and modification without in any manner departing from the spirit of my invention and I accordingly do not limit myself to such specific structure except as hereinafter claimed.

I claim Y 1. In an elevator for tubing, a body portion having an opening formed therein extending through one side thereof, a closure for the. opening pivoted to the body portion and swingable to opened and closed positions, the pivot of the closure paralleling the axis of the body, the closure having portions seating in recesses in the body when the closure is moved to the closed position and moved bodily downwardly, resilient means urging the closure downwardly, said body portion having a wing upon which one of said portions of the closure rides during movement of the closure to opened'or closed positions, and a recess in said wing receiving one of said portions when the closure is in fully opened position to maintain the closure in such opened position.

2. In an'elevator for tubing, a body portion having an opening formed therein extending through one side thereof, a closure for the opening pivoted to the body portion and swingable to opened and closed positions, the closure having portions seating in the body when the closure is moved to the closed position and moved downwardly, resilient means urging the closure downwardly, said wing receiving one of said portions when the closure is in fully opened. position to maintain the closure in such opened position, said wing having a part limiting movement of the closure member to the opened position when said portion of the. closure member is engaged in the recess of the wing, and a can coacting with said resilient means to shift the closure member from open to closed'position when said portion is released from said recess. r

3; In an elevator for tubing, a body portion having an opening formed therein extending through one side thereof, a closure for the opening pivoted to the body portion and swingable to opened and closed positions, the closure having portions seating in the body when the closure is moved to the closed position andmoved downwardly, resilient means urging the closure downwardly, said body portion having awing upon which one of said portions of the closure rides during movement of the closure to opened or closed positions, a recess in said wing receiving one of said portions when theclosure is in fully opened position to maintain the closure in such opened position, said wing having a part limiting movement of the closure member toflthe opened position when said portion of the closure member is engaged in the recess thereof, the upper surface of said wing inclining downwardly from said recess to the body portion.

4. In an elevator for tubing, a body portion having an opening formed therein extending through one side thereof, a closure for the opening pivoted to the-body portion and swingable to opened and closed positions, the closure having portions seating in the body when the closure is moved to the closed position and moved downwardly, resilient means urging the closure downwardly, and means carried by the body for maintaining the closure in opened position, and means for shifting the closure from closed to open position when the last named means is released.

5. In an elevator for tubing, a body portion having an opening formed therein extending through one side thereof, a closure pivoted to the 'bodyc portion and swinga Is to opened and closed positions, the closure having portions seating in the body when the closure is moved to the closed position and moved downwardly,

resilient means urging the closure down-- wardly, and means carried by the body for maintaining the closure in opened position including a cam shifting the closure member to the closed position when the same is released from said means for maintaining the closure in the opened position.

6. In an elevator for tubing, a bodyportion having an opening formed therein extending through one side thereof, a wing formed upon the body portion at one side of the opening, an ear formed'upon the body portion in alignment with the wing, the wing and ear having aligned openings, a pintle engaged in said openings, the edge of the wing being arcuately curved with the center of the opening as a center and with a radius equal to the distance between the center of the opening and the edge of p the opening of the body portion, a closure member having a lug through which said pintle is di'rected, the closure member having aportion riding upon the upper surface of the wing and being swingable to opened or closed position, said closure memberin the closed position closing the mouth of the opening of the body portion and having portions engaging in recesses formed in the ody portion at opposite sides of the opening, and a spring extending between said wing and the lug of the closure member.

7. In an elevator for tubing,a-body portion having an opening formed therein extendin through one side thereof, a Wing forme upon the body portion at one side of the opening, an ear formed upon the body portion in alignment with the wing, the

wing and ear havin aligned o enings, a

pintle engaged in sai openings, t 1e edge of the wing being arcuately. curved with the center of the opening as a center and with a radius equal to the distance between the center of the opening and the edge of the opening of the body portion, a closure memberhaving a lug through which said pintle is directed, the closure member having a portion riding upon the upper surface of the wing and being swingable to opened or closed position, said closure member in the closed position closing the mouth of the opening of thebody portion and having ortions engaging in recesses formed in the mg, a spring extending between said wing and the lug of the closure member, the surface of the wing against which the closure member engages being inclined downwardly toward the body portlon whereby the actlon of said spring tends to cause rotation of the closure member to the closed position, and coacting means upon the closure member and win for maintaining the closure member in the opened position against the action of the spring.

8. In an elevator for tubing, a body portion having an opening formed therein extending through one side thereof, a closure for the opening pivoted to the body portion and swingable to opened and closed posiody portion at opposite'sides of the open- I,

tions, the closure having a portion seating tion, and a downwardly inclining surface in a recess in the body when the closure is curved with the pivot of the closure as a moved to the closed position and shifted center connecting the recesses of the wing 10 downwardly, means urging the closure and body. 7

5 downwardly, a wing carried by the body and In testimony whereof I aflix my signature.

coacting with said portion of the closure for'maintaining the closure in opened posi- LEE J. BLACK.

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