US1552527A - Well-pipe elevator - Google Patents

Description

2 Sheets-Sheet l llll C720 ies Sept. 8, 1925'.

C. E. WILCOX WELL PIPE ELEVATOR Original Filed Jan. 29, 1921 Sept. 8, 1925. 1,552,527

C. E. WILCOX WELL PIPE ELEVATOR Original Filed Jan. 29, 1921 2 Sheets-Sheet 2 ?atented Sept. 8, 1225.

UNITED STATES eraserv basics.

as E. wILcox, or anannnr, camronm, ASSIGNOB r ammo 0. WILSON.

WELL-PIPE mnva'ron.

Original application tiled January 29, 1821, Serial No. 440,988. Divided and this application filed Kay 28, 1928. Serial 3'0. 648,149.

To all whom it may concern Be it known that I. (humus E. \Vrnoox, a citizen of the United States, anda resident of Anaheim, in the county of. Orange a and State of California, have invented new and useful Improvements in VVell-Pipe Elevators, of which the following is a full, clear, and exact disclosure.

This invention relates to well pipe elevators; and this ap lication is divisional of an ap lication file by me on January 29th, 1921, erial No. 440,933, also entitled \Vell ipe elevator. In said prior application I have described a well pipe elevator wherein the suspension bails or links are so associated with the pipe encircling body ofthe elevator as to cause the effectual lifting contact of the links with the body to be ositioned comrtively closely under the oad su ported g; the elevator; and also so as to al ow the links, although normally insured against accidental disengagement from the elevator body, to be easily removable from the body when so desired. This present application is 2 filed for the purpose 0 covering the second mentioned feature of the device shown in my said prior application, and the claims herein are directed to that feature while the I claims in said prior application will be directed to the first mentioned feature. Any

claims to a combination embodyin both features will also be included in sai prior application.

It is a general object of the invention set out in this presentapplication to provide an elevator of sim 1e and strong construction and in which t e supporting bails or links ma be easily removed from the elevator y, but are at the same time revented 4.0 from becoming accidentally detac ed when theelevator is m use. I amaware that heretofore, for instance, in the patents of E. C. Wilson #1,314,996, well elevator, dated September 2,1919 and #1,341,957, .hoist,

dated June 1st, 1920, devices have been made known for making the su rting bail or link of an elevator remova lla from the pipe encircling structure or body. In comparison with such devices it is an object of my invention to provide a simple arrangement, and particularly one that does not need the mani ulation of a. bolt or screw or the removal 0 any parts in order to attach or detach the bail.

circular casing encircling body or structure 10 that is preferably made 11 in two semicircular halvesv l1 and 12 hinged together at one side at 13 and adapted to be releasably held together at their opposite sides by a latch device 14, the details of which it is unnecessar here to describe as I make no claim to tie latch in itself, it being the subject matter of U. S. Letters Patent No. 1,498,141, issued on June 17, 1924 to E. C.

Wilson entitled \V ell elevator. Any sortof latch or lock may be used; in fact, so far as this application is concerned, the details of structure and design of the casing encircling body in themselves are of no conse quence.

Each semi-circular half 11 and 12 has a laterally projecting lug 20 in the lower part of which there is a notch that has a comparatively restricted opening 21: that is, this notch has an inner part 22 that is some what greater. in diameter or lateral dimension than the width of the opening 21.

The actual efi'ective width of opening 21 is also preferably less than the diameter of the round bar from which the bails 23 are formed, so that the bails can only be passed through openings 21 by bringing their reduced parts, at the flats 24, into registration with openings 21. The inner of each notch is preferably of enou lar er diameter than the bails to allow t e bai to play freely in 22, as will be apparent from the drawings. The lower. ends of the bails are curved in the a t seen in Fi 4, and the walls of notches 22 are also curv as indicated at 22' in Figs. 3 and 4. The notches, as seen in the drawings, extend inwardly and upwardly into lugs 20 and into the body roper; 50 that it is also nery art 22 to move the bails down in order to disconnect them from the body. These notches also preferably extend inwardly to such a degree that they come close to or extend clear into the .inner ipe receiving opening 30 of the elevator, and the bails are curved inwardly at their lower ends, in the aspect shown in Fig. 2, so as to reach into the inner parts of the notches and so that their lower ends, where they engage the elevator body, are positioned as closely as possible under the load that is carried by the elevator. This last mentioned positioning of the notches and corresponding shape of the bails is, however, not claimed herein as it is the subject matter of my said co-pending application.

Bails 23 may be formed in any suitable manner, they are usually formed as shown in the drawings with relatively long and 'substantiallv straight side portions 31 in which the tiats 24 are formed to make reduced portions. It will be understood that these reduced portions may be formed in any manner however, the flats are merely a convenient wa of forming a reduced portion in a bail'o circular cross section.

The notch openings 21 in addition to being narrower than notch parts 22, and, preferably, narrower than the bail itself, are also placed in a diagonal position, asmost clearly shown in Fig. 4. (The actual width of openings 21 does not directly show in the drawings due to the fact that the opening is diagonal in both the aspects of Figs. 2 and 4. But the actual width of the o ning is less than the diameter of a the ail and slightly greater than the dimension C be tween Hats 24.) As a result it will be seen that the bails, in their normal or operating positions, cannot become disengaged from the body; because the o nings 21 are narrower than the bail; an because the lower end part of the bail that is then in, proximity to 0 ing 21 is curved, in the aspcctseen in Fig. 4, while the notch opening is straight as seen in that aspect; and because the bail, where it passes through the notch, extends generally transversely while notch opening 21 extends diagonally. Furthermore, when the elevator is suspended in normal operation particularly with the weight of the pipe on the body. the bails cannot move downwardly relative to the'body to get to a point opposite-the openings 21. But when the elevator is not in operation, then each bail may be easily disengaged from the body by turning it over in such a direction as indicated by thearrow in Fig. 4 until the long side part 31 comes parallel to opening 21. The

bail then occupies such a position as shown in dotted lines at A in Fig. 2. Then the bail is slid longitudinally until the flat portions 24 are opposite opening 21, and then by turning the bail down in the direction shown by the arrow in' 2, so that the 'ing a reduced flats 24 are in pro 1' position relative to openjn 21, the bai may be easily slipped throng the opening. This described method of procedure need not be followed exactl as toseguence; but it will be readily seen that in or er to remove the bail it is necessary to turn it to a position at an angle to its normal 0 rative position and also to slide it longitudinally through the notch and also to turn it again about another axis of revolution and then to move it outwardly and downwardly, in order to release it from the body. Thus it is apparent that the bail is extremely unlikelv to ever become accidentally disengaged from the body. even whilev out of use or while being moved from place to place. In fact it is.almost impossible for a bail so to become accidentally disengaged. There is only one articular position in which the bail will isengage from the body. That particular position is very unlikely to he accidentally assumed by the bail; but at the same time it is very easy for a person purposely to put the bail in that position. Even while the elevator stands on a floorthe bails cannot disengage. It will be noticed that, with the elevator standing on a surface S (see Fig. 2) the bail can only fall from sit-ion A to position FB. In

position the flats 24 are not in line with opening 21; the lane of the flats. which in this case is also t eplane of the baiLc-annot be turned down far enough to line up with the diagonal downward-and-outward direction of the opening, due to the fact that the op 'to side 23 of the bail rests on the floor be ore such position is reached.

Having described a preferred form of my invention, I claim:

1. In a device of the character described,

a removable sup rting bail, and a body having a'notch with a transverse inner part adapted normally to carry the bail extending transversely through it and having a diagonal outer opening adapted to pass the bail only when it is in line with said 'outer opening. 7

2. In a deviw of the character described, a continuous supporting link, a body-having a notch with a. transversely disposed inner part adapted to carry the link and adiagonall disposed contracted outeropening,'an a reduced part in the link adapted to be passed through the notch opening when the reduced part is in line with the notch opening, said reduced part being the only part of the link passable through the notch opening.

7 3. Ina device of the character described. a body having a notch with a restricted opening, a removable bail adapted normally to be carried in the notch, the bail being of larger size than the notch opening, and havrtion at a point removed fmm part of the bail that normally engages the notch; and the notch opening being positioned diagonally with reference to the inner part of the notch.

4. In a device of the character described, a body having a notch with an inner portion and a restricted outer opening, said opening being positioned diagonally with refer ence to the inner part of the notch. and a bail adapted normally to be engaged in the notch and having a reduced art, removed from the part normally engaging the notch, passable through the restricted opening.

5. In a device of the character described, a body having a bail receiving notch with a relatively restricted opening; a supporting bail adapted to be carried in said notch, the part of the bail that normally engages the notch being curved. another part of the bail being substantially straight, an. the notch opening being also substantiully straight to pass the corresponding part of the bail.

6. In a device ofthe character described, a body having a hail receiving notch with a bail passing opening; a supporting bail adapted to be carried in said notch, the part of the bail that normally engages the notch being curved, another part of the bail being substantially straight, the inner part of the notch being shaped to take the curved part of the bail, and the notch opening being also substantially strai ht to pass the corresponding part of tie bail.

7. In a device of the character described, :1 body with a notch having a bail assing opening, a supporting bail adapte to be carried in the notch, the bail in its normal operative position being substantially up-v right and having a curved lower end where it normally engages the notch, said lower end being curved in a substantially vertical plane, the inner part of the notch that normally receives the bail being shaped to pass the curved part of the bail, and the notch opening extending in a direction laterally from the inner part of the notch and the opening being substantially straight.

8. In a device of the character described,

' a body having a bail receiving notch the inner part of which extends substantially horizontally, the outer opening of said notch being restricted and positioned diagonally with reference to the extent of the notch, and the direction of the opening from the inner part of the notch being diagonally downwardly and outwardly; a supporting bail normally in a substantially upright position and having a curved lower part normally e ging notch, said inner notch part being s aped to pass said'curved bail part, said bail having a substantially straight portion in its vertical reach, and the notch opening being correspondingly substantially straight and of a width to pass the corresponding part of the bail.

inner part of the notch able t rough. the restricted openin 9. In a device of the character described, a body havin a bail receiving notch the inner part of w ll(ll extends substantially horizontally, the outer opening of said notch being restricted and positioned diagonally with reference to the extent of the notch, and the diiection of the opening from the downwardl) and outwardly; a supporting bail normally in a substantially upright position and having a curved lower part normally engaging the inner part of the notch, said inner notch part bein shaped to pass said curved bail part. said ail having a substantially straight and'reduoed portion in its vertical reach, and the notch opening being correspondingly substantially straight and of a width to pass the correspondingly reduced part of the bail.

10, In a device of the character described, a body having a bail receiving notch with a restricted outer opening, said opening extending diagonally outwardly and downwardly from the inner part of the notch, a bail having a lower curved end part normally engaged in the inner part of the notch and having substantially'st-raight upward reaches, one of said reaches being flattened to reduce its thickness sufliciently to ass through the restricted notch, and the p ane of said flattening being substantially the plane of the bail.

11. In a device of the, character described, a body having a notch with a. restricted outer opening, a removable bail adapted to be carried in the-inner portion of the notch, and a reduced part in the bail passable, through the restricted outer portion of the notch, said reduced part being the only part of the bail passable through the outer portion of the notch.

12. In a device of the character described, a body-having a notch with a restricted outer opening. a removable bail adapted to be carried in the inner portion of the notch, and a reduced part in the bail spaced from the part normally engaged in the notch and passable through the outer portion of the notch.

13. In a device of the character described, a body having a notch with a restricted opening, a removable bail ada ted to be carrled in said notch, the part 0 the bail nor mally engaging the notch being not passable through the restricted opening, and the bail havin another removed part which is pass- 14. In a deviceof the character escribed, a body having a bail receiving notch with a restricted bail passing opening, a supporting bail carried in sand 0 ning, said bail being for the most part 0 larger size than can ass through said opening, but. having a re ueed part assable through said 0 ning, and the re uced part being locate on.

icing diagonally the bail in such reference to the position of carried in the notch, the bail having a part the notch opening that the reduced part will of reduced thickness assable through the 10 be out of register with said opening when notch only when the ail is out of normal the body and the bails are resting on 11 operating position.

I surface. In witness that I claim the foregoing 15. In a device of the character described, have hereunto subscribed my name this 23rd a body having a bail receiving notch with day of March 1923. a restricted outer opening, a removable bail I CHARLES E. WILCOX.

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