US1477709A

US1477709A - Toothless slip and elevator

Info

Publication number: US1477709A
Application number: US582326A
Authority: US
Inventors: John E Lebus
Original assignee: GEORGE F LE BUS
Current assignee: GEORGE F LE BUS
Priority date: 1922-08-16
Filing date: 1922-08-16
Publication date: 1923-12-18
Anticipated expiration: 1940-12-18

Description

Dec. 18 1923.

EAWfiQ J. E. LEBUS TOOTHLESS SLIP AND ELEVATOR Filed Aug. 16. 1922 2 Sheets-Sheet ii Mm IIVVE/VTOR JTEQL 506 ATTORNEYS J. E. LEBUS 'TOOTHLESS SLIP AND ELEVATOR Filed Aug. 16. 1922 2 Sheets-$116M z A TTOR/VEYS JOHN E. LEBUs, or ELECTRA, TEXAS, ASSIGNOB T GEORGE 13. LE BUS, or wicrum COUNTY, TEXAS. A

TOO'I'HLESS SLIP AND ELEVATOR.

Application filed August 16, 1922. Serial No. 582,326.

To all whom it may amwe'm:

Be it known that I J OHN E. LEBUs, a citizen of the United states, and resident of Electra, in the county of Wichita and State of Texas, have invented certain new and useful Improvements in Toothless Slips and Elevators, of which the following is a specification.

' Thisinvention relates .to a combined ro' tary slip and elevatorespecially adapted for f at use in connection with oil, gas and water wells. 4

Briefly stated, an important object of this invention is to provide a rotary slip which does not necessarily employ teeth to grip the pipe as by the absence of teeth the possibility of damaging or mutilating the pipe is greatly decreased. 1

Further the invention forming the subject matter'of this application aimsto provide an elevator which may be conveniently engaged with the pipe when it is desired to either raise or lower the string of pipe in the well.

A further object is to provide a pair of slips of the character specified which are self-centering and which greatly facilitate the placing of the pipe.

A further object is to provide a combined rotary slip and elevator which is of highly simplified construction, durable in use and cheap to manufacture.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawing forming a part of this application and in which like numerals are employed to designate like; parts throughout the same,

Figure 1 is a side elevation of the imppoyied combination slip and elevator ap- 1e P Figure 2 is a similar view taken at right angles to Figure 1, parts being broken away to illustrate the shoulder of one of the slips,

Figure 3 is a horizontal sectional view taken on line 33 ofFigure 1,

Figure 4 is a perspective of a latch em- I bodied in the invention,

Figure 5 is a perspective of one of the sections of the elevator,

Figure 6 is a perspective of one of the sections of the slips,

' that the b Fi ure 7 is a perspective of one of the teeth whic may be employed in connection with the slips. v

In the drawin wherein for the purpose of illustration is s own a preferred embodiment of the invention, the numerals 5 designate'two approximately semi-circular bodies which are adapted to be arranged about the pipe 6 in the manner illustrated in Fig-,

ure 1 and when the sections 5 are arranged about the pipe the tongue 7 extending from the-upper ends of the same may be engaged with the lower end of a tool joint collar 8. More specifically the inner sides of the tongues 7 are provided with arcuate shoulders 10 which are engaged with the lower end of .the collar 8 whereby to preventthe downward movement of the pipe 6 with relation to the slip. It will be observed that the tongues 7 extend for approximately 90 thereby leaving spaces between the opposite vertical edges of the tongues for a purpose to be fully hereinafter described.

In carrying out the invention each of the sections 5 is provided with a lug 12 which may be received within a recess 14: in the adjacent side of the other section whereby to hold the two sections 5 in the proper position. That is to say the sections 5 are held in position by the lugs 12 and the recesses 14 so that the shoulders 10 are both flatly en aged by the lower end of thecollar 8.

f desired the inner sides of the sections 5 may be provided with dove-tail slots for the reception of teeth 16 and it will be observed that the teeth may .be detached by forcing the same upwardly in the dovetailed ves. However, the accidental loss of the teeth 16 is very unlikely as they cannot move out of the lower end of the dove-tail grooves within which they are arranged. v

In ractice the sections 5 are fitted into a spi er 20, shown in dotted lines in Figure 2, the said spider being provided with a tapered (ripening and it will be observed y formed by the semi-circular sections 5 is tapered toward its lower end and is snulgl fitted within the opening in the spider. he outer sides of the sections 5 are providedwith longitudinal and circumferential ribs which form a reinforcing means for the improved slip. The longitudinal ribs 21 at the opposite edges of the sections flatly contact with each other and one longitudinal rib 21 of each section is formed with an openin 14 which receives the laterally projectingug 12 of the adjacent rib of the other section. That is to say one rib of each section is formed with an opening while the other rib is formed with a lug to be received within the opening of the other section. By reason of this construction the uniform engagement of the shoulders with the lower end of the col- I lar 8 is assured. Each section 5 is provided with a handdle or bail 25 by means of which the sections may be handled.

The improved elevator is generally designated by the numeral and consists of a pair of

semi-circular sections

31 and 32, each of which is formed with ears 34 for the reception of a pivot pin 35.

One of the sections 31 is formed with a projection 36 which is engaged by the hooked end of a pivoted latch 37, the said pivoted latch being pivotally connected to a finiger grip 39 as indicated at 40. Figure 3 illustrates that the finger portion of the latch 37 is engaged by a sprin 41 which acts to urge the hooked end of t e latch into engagement with the lug. When the

sections

31 and 32 are in their open positions the inward pivotal movement of the latch is limited by the base portion 4401* the gripping member 39 so that the latch 37 1s in the proper position to engage the projection 36. However, attention is directed to the fact that the forward end of the latch 37 is rounded as indicated at 46 so that it will ride over the projection 36 and thereby allow the latch 37 to swing into locking engalgement with the projection. The semicircular section 31 is provided with a U- shaped gripping member or handle 47 arranged ad acent the gripping member 39..

When it is desired to separate the ends of the

sections

31 and 32, the latch 37 is swung on its pivot and the

parts

39 and 47 are manually en aged and moved away from each other w ereby the elevator is released.

When it is desired to engage the improved elevator with the pipe,.it is merel necessary to position the same on opposite sides of the pipe with,the arcuate shoulders 50 between the opposed edges of the tongues 7 and subsequently draw the free ends of the sections 31 and 32- together. This engages the upper sides of the shoulders 50 with the lower end of the collar 8 and consequently the upward movement of the elevator Wlll resu t in the upward movement of the pipe.

Figure 1 illustrates that the

semi-circular sections

31 and 32 of the elevator are provided wlth ears to which the elevator llnks 62 are connected and the elevator links 62 are in turn connected to the member 64 by means of which the elevator may be raised or lowered as the occasion requires.

With reference to the foregoing description taken in connection with the accompanying drawing, it will be apparent that the tongues 7 of the slip may be engaged with the pipe beneath the

semi-circular sections

31 and 32 and the pipe will not bedamaged or mutilated by teeth. However, if the pipe is provided with no collar teeth or other suitable gripping means may be em- 2. The combination of a pair of slips hav- 7 ing upstanding tongues, the edges of which are spaced from each other, and an elevator having shoulders arranged between the spaced edges of said tongues, said tongues being provided with arcuate shoulders adapted for engagement by the projections on a string of i e.

3? n elevator comprising a pair of pivotally connected sections, means to detachably to connect the ends of the sections, inwardly directed arcuate shoulders carried by the inner sides of said sections and adapted to engage the under sides of the projections on a strin of pipe, and slips having tongues engaged by said shoulders.

4. An elevator comprisin a pair of sec tions having their inner si es formed with arcuate shoulders adapted to en age a projection on a string of pipe, an a pair 0 slips confined between said sections and arranged at the ends of the shoulders whereby to hold the sections against rotation.

5. An elevator comprising a pair of sections havin their inner sides formed with shoulders a apted to engage a projection on a string of pipe, a pair of slips confined between said sections and arranged at the ends of the shoulders whereby to hold the sections against rotation, and means whereby to det'achably connect the sections.

6. Anelevator comprisin a pair of sections having their inner si es formed with shoulders, the ends of which are arranged in spaced relation, and a pair of clips hav ing Iupwardly directed tongues confined between the spaced ends of said shoulders whereby to hold the elevator in position.

7. A pair of slips comprising a pair. of semi-circular bodies having their opposed sides formed with ribs, one rib of each body being formed with a recess and the other rib of each body being formed with a projection adapted to be received within the recess of the other body, and transversely curved tongues carried b said semi-circular bodies and adapted to engaged with a string of pipe.

8. A pair of slips comprising a pair of semi-circular bodies having ribs, one rib of each body being formed with a recess and the other rib of each body being formed with a projection adapted to be received within the recess of the other body, transversely curved tongues carried by said semicircular bodies and adapted to be engaged with a string of pipe, the outer sides of said semi-circular bodies being tapered and adapted to be received within the spider o a drilling rotary.

9. A air of slips for oil well rotaries comprising a pair of semi-circular bodies having transversely curved tongues, the inner sides of which are formed with shoulders adapted to be engaged with the collar of a string of pipe, the opposed sides of said body. being formed with projections and recesses to receive the projections whereby the shoulders are uniformly engaged with the collar.

10. A pair of slips for oil wells rotaries comprising a pair of semicircular bodies having transversely curved tongues, the inner sides of which are formed with shoulders adapted to be engaged with the collar H the collar, and an elevator adapted to receive said tongues.

11. A pair of slips comprisin separate semi-circular pipe-surrounding bo ies having their adjacent portions formed with transversely extending'interfitting projections and recesses adapted to hold one body against up or down movement with relation to the other body, each of said bodies being formed with ipe supporting means.

12. sisting of a pair of pivotally connected bodies having spaced shoulders, and slips arranged between said shoulders and engaged thereby.

13. The combination of an elevator consisting of a pair of pivotally connected bodies have inwardly projecting integral shoulders, a pair of slips having upwardly directed tongues, the ed es of which are arranged in spaced relation to each other and are engaged by the edge portions of said shoulders, said tongues being provided with shoulders adapted to be engaged by the projections on a string of pipe.

he combination of an elevator con- 1 JOHN E. LEBUS.