US1648158A - Hoisting tackle - Google Patents

Description

Nov.. 8, T927.

w. w.` wlLs'oN HOI STING IACKLE Filed July 24, 1925 2 sheets-shag?. 1

@Q y, mr N III W ai 2J Nov. 8, 1927.

w. w. wlLsoN Y HOISTING TCKLE Filed July 24, 1923 2 l Sheets-Sheet 2 rdm 0k m n er. wm ,10 JM m .m .m W

Patented Nov. 1,927. l I

. 'without limiting my invention to 'this par ings in which- UNITED STATES "1,648,158 PATENT OFFICE.

WEBSTER WILSON, OF LOS ANGELES, CALIFORNIA.

HOISTING TAOKLE.

This invention relates most particularly to well drilling apparatus and to hoisting tackle for handlingy casing, pipe, and drill pipe or drill stein. Although itis, as will he un.- derstood from the device-itself, adapted for use generally in connect-ion with handling well pipe and casing, the particular form of the device herein illustrated and hereinafter described indetail has been designed with a view to expeditiously and. safely handle a drill pipe and drill stem inI rotary `drilling rigs. So in the following specific-ation, but

ticular use,l I shall describe the invention as it i's used for handling drill pipe in a rotary drilling rig.

Heretofore it-has been common to handlel such drill pipe with an elevator lhaving a bail' or va pair of hails. and with a hoisting tackle that has 'a hook engaging the hails.

After the drill pipe is lowered in the well and if it becomes necessary to add a new,

length, the elevator previously in use s left standing on a support at the floor, the hook is disengaged and then engaged'in the hail or hails of a second elevator in which the next length is held. The swivel water con` nection tothe upper en'd of the previous length isdisconnected and connected to the top .end of the next length, the next length is screwed into'the upper endof the previous length,` and then the elevator below is disengaged and the drilling. operation and the lowering of the pipe is resumed. In these operations the time element is of very great importance as it is essential in rotary drilling operations to keep the 'water fiow4 as vnearlycontinuous as possible'. .The disengagement and engagement of theI hook are usually rather awkward operations and at times somewhat dangerous. Furthermore, the hooks although constructed very heavily, occasionally fail and sometimes with disastrous results. l

It is a general. object of the ,invention to provide a device to take the place of the hook in such hoisting tackle, .and that this he quickly and easily disconnected from or connected to an elevator, and ythat is of comparatively light weight and yet strong and safe. Other objects ofthe invention will behest understood from the following vdetailed description reference for thisYspur-L pose being had to the accompanying'draw- Application led July 24, 1923. Serial No. 653,586.

Fig. 1 is a view partly in elevation and partly. in centralvertical section; Fig. 2 is a side elevation of the device; Fig. 4 is a horizontal sectihn on line 3-3 of Fig. 1;

Fig. 3 is a similar section showing the elevator halves opened out;4 Fig. 5 is an eleeol vation showing a modified form; and Fig.

Gis a side elevation of the same. v

In/the drawings I show, in my complete combination, a `pipe elevator E of the general design and with appurtenances such as shown in the patent of E. C. Wilson,1 No.

1,498,141, granted June 17, 1924, on Well ele- Vators and in the patent of Charles E. lW'ilcox. No. ,1.511,699,` granted October 14, 1924, on Well pipe elevators. However, except in some particulars as will be understood from the following statements the particular type of elevator used `.here is of no special Consel quence. This type of elevator has two bail lugs 10 on its opposite hinged halves and the two hails 11 are in the form. of lin-ks and their lower ends passed through openings 12 in the hail lugs. These openings 12 have diagonal slots 13, so placedand of such size that if the hails are laid down toward a horizontal position (both'in the same direction-the two slots here being parallel) then they may hey easily disengaged from the elevator hy slipping one of their straight sides out through slots 13. In their normal September 18.` 1923. .entitled Elevators. Y.

Such formation of the lugs allows the elevator halves to he swung open on their hinge 15 without swinging or twisting the hails 11 about a vertical axis 'and thus enables the elevator halves to he opened while the upper ends of the hailsv are in engagement with swivel S. The details of this arrang-` ment need not however, he gone.. into here as such structure is the subject matter of mysaid patent. Figs. 3 and 4 show elevator halves in closed and open position and show .howl the hails swing outwardly at their lower ends without twisting about a vertical axis and thus show how the hails may remain in engagement with the relatively small bail receiving openings of the swivel while the elevator is being opened and closed. This is-of some decided advantage, and it is also advantageous to have the upper ends of the bails fit through the swivel lugs comaratively closely (instead of being in a 'arge loose opening or instead of being merely hooked into a hook) and the structure or elevator which I here describe allows of these advantages and at the same time allows the elevator to be easily opened and closed.` i

Swivel S is the part that takes the place of the 'ordinarilyused hook. This swivel has an eye bolt 3() carrying afball race 31y and the body 32 of the swivel is directly supported by a spring 33 which isv carried on the upper ball race 34. Body32 has bail lugs 35 with bail receiving openings 36 just slightly larger than the bails so that the bails are held not tightly but yet comparatively snugly and without any great looseness.v

These bail receiving openings may be constructed in the same manner as before ex plained in connection with elevator E; that is, they may have diagonal slots through which the bails may easily be disengaged from the lugs; 0r the bail removal slots 37 may have closureblocks 38 that may normally be held in place by bolts 39. It is the particular object in this specific part of the construction as well `as in the connection of the bails to the elevator, to provide that the bails shall be securely held but atthe same time shall be quickly and easily removable.

' .normally held in'engagement with the eleva-` I may' also mention here that it is not absolutely necessary for the lbails to be removable rom both the elevator and the swivel; easy removability fromeither may answer ordinarily the purposes for which the device is intended; but it may be desirable in some instances to have the bails removable from both asl it may sometimes be desirable in op# eration to disengage the bails from the elevator and then at other times to disengage them from the swivel.

In Fig. 5 I show the elevator havin a removable block 13' to close slot 13 leadlng tof the openingulthrough which bail 1l passes. In this form the bails are easily removed byremoving block 13a and then moving the lower ends of the bails downwardly and outwardly, it not being necessary to move the bails to diagonal position, as in Fig; 2, for removal and in this form the blocks might be omitted, the bails being tor by pullingv up into openings 1 2`behind overhanging wall 12a. In this form the lugs 10 may also be curved to attain the action ,illustrated in Figs. 3and4.'

. It is unnecessary for me to point out how l and why this construction is' particularly strong, safe and reliable, -as it can be readily then ont of the way, as regards the elevator standing on the floor and supporting the pipe in the well, and also because' then one set of bails suiiices. It will be readily understood that the bails may be interconnected very quickly and without any trouble. When,

the device is inuse, the spring 33 absorbs all shocks and eases oil strains on the pipe, hoisting tackle, line, derrick and hoisting apparatus. y f Having described a invention, I claim: y v

1. In combination,l a pipe elevator with link receiving lugs, a connector comprising a stem having means at its upper end for conpreferred form of my nection with a tackle block, a yoke disposed rotatably about said stem and having laterally extending lugs provided with link reaceiving portions, means on the lower portion of the stem for sustaining Said yoke, and links extending between and engaging `the elevator lugs and the yoke lugs.

2. In combination, a pipe elevator with two opposite link receiving lugs, a connector comprising a stem having means at its upper end for connection withva tackle block, a yoke disposed rotatably and longitudinally movable about said stem and having two opposite laterally extendingy lugs provided with link receiving portions, resilient means sup'- ported on the lower portion-of vthe stem for sustaining said yoke, and a pair of links extending between and engaging the yoke lugs and the elevator lugs.

3. In combination, a pipe elevator with link receiving lugs, a connector comprising a stem having means at its upper end for connection with a tackle block, a `yoke disposed rotatably about said stem and having laterally extending lugs provided with link receiving portions, means onl the lower portion of the stem for sustaining said yoke, and links extending between and engaging the elevator lugs and the yoke lugs, said linkstwo opposite link receiving lugs, a connector comprising a stem having means at its upper end for connection with a tackle block, a yoke disposed rotatably and longitudinally movable about said stem and having two yoppositeI laterally extending lugs provided with link receiving portions, resilient means supported -on the lower portion ofthe stem for sustaining said yoke, and a pair of links exY tending between and, engaging the yoke lugs and thev elevator lugs, said links being removable from the elevator-lugs.

y5. A block and `elevator connector, com' prising a cylindrical stem having va head and eye at the upper ortion thereof, a yoke disl posed rotatably a out said 'stein Aand having block, a yoke fitting rotatably Vabout said laterally extending lugs provided with linkreceivingl grooves, andymeans on the lower portion of the .stem for sustaining said:` yoke.

6. A- block and elevator connector, comprising a cylindrical 'stem having means at its upper end for connection with aV tacklestem, said yoke having opposite laterally ex- 'l tending lugs provided .at'` the upper sides kthereof with link-receiving grooves, means .on the lower portion of the stem 4for sustaining said yoke, and lmeans for retaining elevator-links in said grooves of the yoke? lugs. A block; and elevator connector, com-f prising ay cylindrical Stem, a yoke slidably and rotatably disposed upon said stem, said yoke havingopposite laterally extending lugs adapted for engagementby elevator links, means at .the upper end of the stem for connecting the same with a tackle-block a spring disposed about. the lower portion of the stern and yieldably supporting the yoke prising a stem havingmeans at its upper end for connection with a tackle block, a yoke disposed rotatably about said stem and hav-J ing oppositely laterally extending lugs pro-- vided Iwith, link) receiving portions, and

means on the lower portion of the stemffor sustaining said yoke.

10, A block andjelevator connector, comprising a stem having means at its upper end for 'connection with a tackle block, a yoke ldisposed about saidstem and movable rotatably and longitudinally thereof and having laterally extending lugs provided with link receiving portions, and resilient means supported on the lower portion lof said stem for resiliently sustaining said.= yoke.

In witness that I claim the fore oing have hereunto subscribed my name t is 14th day of J uly', 1923.

- WILLIAM WEBSTER wILsoN.

portion of thefstem for sustaining Said

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