US1812721A - Well drilling apparatus - Google Patents

Description

Ju'ne 30, 1931. w. sHELDoN 1,812,721

WELL DRILLING APPARATUS Fired July 9, 1927 4 sheets-sheet 1 INVENTOR. l

@Unido/*5g E June 30, 1931. w. sHELDoN WELL DRILLING APPARATUS Filed July 9, 1927 4 Sheets-Sheet A2 Y lN/ENToR. widow e/@dcm/ 'l wmf X June 3o, 1931. w SHELDQN 1,812,721

WELL DRILLING `APPARATUS Filed July 9, 1927 4 Sheets-Sheet 3 June 30, 1 931. w. sHELDoN 1,812,721

WELL DRILLING APPARATUS FiledJuly 9, 1927 4 Sheets-Sheet 4 muy mu 75 W1 i INI/ENTOR.

waclo/ Sfwedmv Patented June 30, 1931 UNITED STATES PATENT OFFICE WALDO SHELDON, 0F SOUTH NORWALK, CONNECTICUT, ASSIGNOR TO SH'ELDON MA- CHINERY CORPORATION, 0F NEW YORK, N. Y., A CORPORATION 0F NEW YORK WELL DRILLING APPARATUS Application filed July 9, 1927. Serial No. 204,446.

This invention relates to well drilling apparatus of the rotary type and the general objects of the invention are to provide simple, practical, powerful, reliable and as nearly automatic as possible, means for coupling and uncoupling the sections of drill pipe.

The invention involves the use of suitably constructed pipe holding grips or segments and includes the provision of means operable in conjunction with the rotary to eliect positive opening and closing movements of these so-called grip devices. In the embodiment disclosed herein, the operations are' effected by power cylinders connected to raise and lower a sleeve in the bore of the table, said sleeve carrying a grip closing socket acting on the grip members which are suspended in relatively rotatable relation from the table.

,Various other novel features of construction, combinations and relations of parts will appear as the specification proceeds.

The drawings accompanying and forming part of this specification illustrate some of the practical embodiments of the invention and it is to be understood that as a matter of fact, the actual structure may vary from these particular illustrations without departure from the true spirit and broad scope of the invention as hereinafter disclosed and broadly claimed.

Figure 1 is a broken part vertical sectional side view of anembodiment of the apparatus showing the power operated drive sleeve lowered to'open the pipe clamp.

Figure 2 is a broken detail view illustrating the reverse condition with the sleeve raised to close the clamp on the pipe.

Figure 3 isa partial plan view of the appara-tus shown in Figure l.

Figures 4 and 5 are horizontal sectional views as on substantially the planes of lines p 4-4 of Figure 2 and 5 5 of Figure 1.

Figure 6 is a plan view of the grip sup` porting ring.

Figure 7 is a view of the outer side of one of the gripping segments.

Figure 8 is a plan view of the grip socket.

Figure 9 is a broken sectional view of an embodiment of the invention in a concentric cylinder type of drill. Figure 10 is a plan of the grip socket. Figures 11 and 12 are sectional details of another embodiment.

In the present disclosure, the rotary table which is designated 1, is shown constructed with a long dependent sleeve 2 journaled in an elongated dependent bearing 3 carried by a substantially Hat bed plate 4 mounted on side beams 5 connected in spaced relation by cross beams 6, these beams being spaced as indicated in Figure 3 to accommodate between them, the table bearing andV at opposite sides of that, the two power cylinders 7 The pistons 8 in these cylinders have downwardly acting piston rods 9 connected by keys 10 with the ends of a cross beam 11 in the form of a yoke having thrust bearings 12, 13 for the lower end of a drive sleeve 14 0perating up through the bore of the table.

The drive sleeve 14 may be keyed to rotate with the table by means of a key or keys inserted in corresponding key- ways 15, 16 in the table'sleeve and drive sleeve respectively. With such keying means in place, the drive sleeve is slidinglykeyed in the table and may be raised and lowered bythe lower cylinders in the course of such rotation.

In drilling with this so-called pressure feed, the drive sleeve will carry in the upper end of the same, suitable clamp means firmly gripping the drill pipe so that any desired lifting or lowering force may be applied to the drill bit by controlling t-he hydraulic or other power fluid used in the power cylinders. When, however, the keying means is removed, the drive sleeve isuncoupled from the table and may remain in non-rotating relation thereto. In this uncoupled relation it may also be raised and lowered by the power cylinders independently of the rotation of the table.

In the present invention the lifting and lowering force of the power cylinders is utilized to effect a gripping and ungripping of the drill pipe for make and break purposes. i

The pipe grip shown consists of a series of clamp segments 17, beveled to fit a tapered socket 18 suit-ably secured as by bolts 19 in f the upper end of the drive sleeve. These an grips are shown as having dovetail keys 20 on the inclined backs of the same, working in corresponding ways 21 in the socket member 18 and as having dovetail or equivalent keys 22 on the inclined tops of the sam'e working in corresponding ways 23 in the under side of a ring 24 which is rotatably supported by the table.

In the present disclosure the supporting ring is mounted on the table by a ring or spider 25 fixed on top of the table by bolts or posts 26 and carrying on its under side an annulus 27 having an inwardly projecting flange 28 acting as a bearing for the rim of the supporting ring. A roller bearing 29 interposed between the top of the ring 24 and the overstanding support 25 prevents undue friction between these parts.

As shown particularly in Figures l and 2, the grip closing socket in the upper end of the drive sleeve tapers downwardly and the lower face of the supporting ring is inclined as an upwardly tapering socket with the result that the two cooperate to crowd the grip segments against the pipe when the drive sleeve is raised by the power cylinders.

It will be equally clear that upon reverse movement of the drive sleeve, the key ways in these two sockets will have the effect of pulling the grips outwardly, clear of the pipe. The extent of this movement is sufficient, as shown in Figure 1, to pass the tool joints 30 in the pipe.

The supporting posts 26 are detachably mounted on the table as by screwing them into suitable seats 3l provided in the top of the table and the spider 25 is shown as detachably secured on these posts by large nuts 32. lOne of the posts is shown as extended upwardly at 33 and as carrying a collar 34 secured adjustably thereon by a clamp screw 35, said collar serving as a positioning abutment for the end of the tongs 36 swivelled on the upper end of this post extension. This tongs is shown in Figure 1 as gripped on the upper or pin section 30a of the tool joint.

The inner faces of the grip segments are suitably roughened or toothed to both supportingly and rotatingly grip the pipe, for instance, by a combination of both horizontal and vertical teeth so that when closed, as in Figure 2, they will support the pipe and hold it as well against rotation.

The drive sleeve is secured against rotation when unkeyed from the table by means consisting in the present disclosure, of a transverse boltv or key 37 slidingly mounted on the cross beam 11 and adapted to enter a socket 38 in the lower end of the sleeve. This locking bolt is shown controlled by a bellcrank 39 also mounted on the beam, having o a pin and slot connection 40 with the bolt position above the derrick floor.

and controlled by a cable 41 extending up over a pulley 42 to a conveniently accessible The outstanding -arm of the bellcrank is shown weighted at 43 to thrust the locking bolt into holding engagement with the drive sleeve and the upper end of cable 41 is shown equipped with a lesser weigh-t 44 so that the drive sleeve will be held locked against rotation irrespective of the raising and lowering movements imparted thereto and so that the bolt may be tripped to unlock the sleeve at any time by simply pulling down on the upper end of cable 4l, or if desired, applying additional weight to the weight 44, sufficient to overcome weight 43 and thus hold the bolt in retracted relation. This construction thus provides a ready control of the locking bolt at the level of the derrick floor and enables the bolt to be left either in the securing position 0r to be held in the retracted relation, independently of'the vertical movements of the drive sleeve.

It will be seen that the invention provides an attachment which may be readily applied to the power feed rotary, whereby the power feed mechanism may be utilized for gripping and releasing the pipe in the operations of going into and coming out of the hole. All that is necessary to effect the change from power feed operation to the make and break operation is to remove from the drive sleeve, the adapters and pipe clamps used in the power feed operation and to substitute the special grip closing socket and mount the grip supporting mechanism on the table.

Then, with the drive sleeve unkeyed from the table and secured against rotation by the locking bolt 37, the power cylinders may be used to positively close the grips on the pipe and to positively open the grips to release the pipe and pass the tool joints.

In going out of the hole, the pipe will be hoisted each time to bring the lower section or box member 30?) of the joint far enough above the supporting spider 25 to admit the elevator under the shoulder of the joint at 45, Figure 2. The tongs supporting collar 34 is adjusted on its post so that in this position the tongs can be swung in to grip the pin member of the joint. This tongs setting, therefore, serves as a gage for this purpose. The grip is then closed upon the pipe, as in Figure 2,.so that the pipe is both supported and held against rotation. The table may then be reversed to cause the tongs to back oill the upper pipe section, which when unscrewed, may be lifted over to the rack. The clearance above the spider enables the elevator being lowered and gripped on the next section of pipe below the box member 306, the power cylinders are lowered to release the grips and the pipe is Withdrawn to bring the next joint up into position above the supporting spider.

In going into the hole, the reverse procedure takes place, vthe pipe being held by the closed grip of the drive sleeve while the i table is rotated to turn the added pipe section into the box, after which the grip is opened and the pipe is lowered till the elevator is just above the supporting spiders, whereupon the grip is again closed to hold the pipe while the elevator is released and taken back to pick up the next section of pipe.

The arrangement of the power cylinders at opposite sides of the rotary and all in a line which is substantially parallel with the side beams of the frameprovides a very compact, well balanced structure as will be evident from Figure 3 and this arrangement permits a very short drive for the table, the same comprising in the illustration a chain sprocket 47 on a short shaft 48 journalled in a bearing 49 over one of the side bars of the frame, said shaft carrying at its inner end a pinion 50 meshing with the gear ring on the under side of the table.

Figure 9 illustrates an embodiment of the invention in a concentric cylinder form of drill, the power for opening and closing the clamp being furnished in this case by a single concentrically arranged annular power cylinder 51, having a piston 52 provided with an annular piston rod 53 connected by thrust bearings 54, 55 with the drive sleeve 56. The tapered grip closing socket 57 in this case is secured to the upper end of the inner stationary annular cylinder wall 58 and the grip blocks 59 which are slidingly guided in this socket are slidingly keyed at the top in a ring 60 secured to the upper end of the drive sleeve. In the form of the invention just described the socket remains stationary and the grip members are raised and lowered therein by the drive sleeve which at such time is uncoupled from the table and is raised or lowered as required by controlling admission v*and exhaust-of power fluid to and from the annular power cylinder.

Alln ythe form of the invention illustrated in Figures 11 and 12, the power for operating of the invention first illustrated, but the piston rods operate upwardly, instead of downwardly. This last form differs from the first form and is like the second form in that the grip-.socket is stationary and the grip blocks are raised and lowered therein by the power mechanism.

The grip socket in this last illustration is designated 61 and is shown as removably secured by withdrawable lock bolts 62 in an extension 63 on the lower end of the table bearing sleeve 3. The grip blocks here designated 64 are slidingly keyed in this socket as in the other examples of the invention and are slidingly hung from a rotatably supported ring 65 similar to the ring 24 in Figures 1 and 2. AThis ring is rotatably suspended from the lower end of the drive sleeve 66 which corresponds generally to the drive sleeve 14 in Figures 1 and 2. This drive sleeve, ho-wever, is engaged at the top, over the table by a cross beam or yoke 67 connected with the upper ends of the upwardly extending piston rods 68. Rotatably supported between upper and lower thrust bearings 69, 70 in this beam is a collar 7l serving as a bearing and support for the drive sleeve. lVithdrawable bolts 7 2 serve to lock the drive sleeve to the bearing collar 71. The drive sleeve in this instance carries the make up post 73 to which the tongs are attached. Thus the rotative force for making or breaking the joints is supplied in this instance from the rotary table through the intermediacy of the drive sleeve, the latter carrying the tongs post, instead of the table itself.

en pressure is admitted to the lower sides of the pistons, the drive sleeve will be lifted in the table and the grip blocks rotatablyv suspended from the lower end of the same will be thereby lifted in the socket 61 and hencevdrawn upward and outward from gripping engagement with the pipe. lVhen the drive sleeve is lowered by the pistons, the wedge shaped grips will be forced downward and inward into holding engagement with the pipe. lVhen the grip is thus held, the table may be rotated to make or break the tool joints, the post 73 carrying the tongs around one way or the other, as the case may be.

The drive sleeve 66 may carry the gripping means for driving the pipe or grief stem during the rotary driving operations and the same is accordingly shown formed at its upper end to carry suitable pipe gripping devices, a portion of such devices being illustrated in broken lines in the form of the adapter 74. If desired, however, a regular drive sleeve may be substituted for the special drive sleeve illustrated, in which' event, the latter would be withdrawn and the regular drive sleeve be substituted in its, place. This withdrawal of the grip operating drive sleeve is readily eifected after the bolts 72 and I 62 are drawn back and turned as in Figure 12 to lock them in their retracted position.

The drive sleeve may then be hoisted out of y its bearing collar 71 and a special feature of this operation is that the grip blocks are illustrated as having outwardly projecting lugs 75 on their lower ends to engage and pick up the adapter socket 61 as in Figure 12 so that this socket will be drawn up along with the sleeve and the grip blocks. The drive of going into or coming out of a hole, and in this disclosure the invention is shown embodied in the three different types of drills disclosed in prior applications, Serial Nos. 704,102, 711.981 and 711.982, Figure 11 showing the first type, wherein a cross beam supporting the drive sleeve extends across the table and is actuated by upwardly extending piston rods, Figure l disclosing the inverted form where the cross beam is located below the table and actuated by downwardly extending piston rods and Figure 9 showing the concentric cylinder type of the apparatus. There are certain advantages inherent in each of these types. An important advantage which may be mentioned as existing in various forms of the apparatus is that tho driller may operate the hoist in high speed at all times because of the fact that it is not necessary to lift the load to release the slips. Thus in the first form of the invention, the slip closing adapter or socket drops away from the slips to open the same. In other words, the slips do not have to be pulled to release them from the pipe and consequently the driller simply needs to take up the slack in the ,hoist line before releasing the slips, which then come away from the pipe as the socket is lowered.

hat' is claimed is 1. In well drilling apparatus, the combination with a rotary table, of a sleeve slidingly keyed therein and adapted to be unkeyed therefrom and to remain in non-rotating relation thereto, supporting means carried by the table, pipe grip means supported by said supporting means, grip operating mechanism carried by the sleeve for closing and opening the grip means with respect to a drill pipe extending down through the sleeve and power mechanism for raising and lowering the sleeve to positively close or open .the

grip means.

Q. Yell drilling apparatus, comprising a rotary table. asleeve slidingly keyed in said table but adapted to be uncoupled so as to remain in non-rotating relation thereto, pipe gripping means. an overstanding abutment for said pipe gripping means, said abutment being carried by the table and wedging mechanism cairied by the sleeve for forcing the grip means against the abutment into gripping engagement with a drill pipe extending down through the sleeve.

3. 'ell drilling apparatus, comprising a rotary table, pipe grips supported thereby, a sleeve vertically operable in the table, grip closing means carried by said sleeve and operatively connected with said grips and means for enabling said sleeve to rotate with the table or not as may be required and means operable independently of the vertical grip closing and opening movements of the sleeve for securing said grip closing and opening sleeve against rotating when said sleeve is released from the table and irrespective of the vertical movements of the sleeve in the table.

4. 'ell drilling apparatus, comprising a rotary table, pipe grips suspended in relatively rotatable relation on the table and a sleeve vertically operable in the table and operatively connected with the grips for relatively contracting or expanding the same.

5. lVell drilling apparatus, comprising a rotary table, relatively adjustable pipe grips rotatably supported by said table and a sleeve vertically operable in the table and provided with means operable in the vertical move ments of the sleeve in the table to impart rela tive expanding or contracting movements to said grips.

(5. Yell drilling apparatus, comprising a rotary table, relatively adjustable pipe grips rotatably supported by said table and a sleeve vertically operable in the table to impart relative expanding or contracting movements t0 said grips, said sleeve having means enabling the same to be coupled to and uncoupled from the table and means for securing the sleeve against rotation when the same is uncoupled from the table.

7. Yell drilling apparatus, comprising a rotary table, relatively adjustable pipe grips rotatably supported by said table and a sleeve vertically operable in the table to impart relative expanding or contracting movements to said grips, said sleeve having means enabling the same to be coupled to and uncoupled from the table and means for securing the sleeve against rotation when the same is uncoupled from the table. said securing means being operative to hold the sleeve against rotation in the rising and falling movements thereof and means conveniently accessible adjacentI the rotary table to render said securing means ineffective at any time in the vertical travel of the sleeve.

8. fell drilling apparatus, comprising a rotary table, pipe gripping segments suspended by said table in the bore of the same, a segment closing socket vertically operable in the bore of the table to shift the segments into gripping relation with a drill pipe eX- tending down through the table and means for securing said socket against rotation with the table. i

9. Tell drilling apparatus, comprising a rota-ry table, a tapered socket vertically operable in the table, pipe gripping segments engaged in said socketI and an overstanding abutment for said segments carried by the table.

l0. Tell drilling apparatus, comprising a rotary table, a tapered socket vertically operable in the table, pipe gripping segments engaged in said socket, an overstanding abutment for said segments carried by the table and a ring rotatably interposed between said segments and the table carried abutment.

11. Tell drilling apparatus, Acomprising a rotary table, a sleeve vertically operable in said table, means for holding said sleeve against rotation, a power cylinder `for positively raisiiig and lowering said sleeve, pipe gripping devices suspended by the table in concentric relation to the sleeve and actuating means for said pipe gripping devices carried by the sleeve and operable in the raising and lowering movements of the sleeve to relatively close and ope-n the pipe gripping devices.

12. Well drilling apparatus, comprising a rotary table, a ring rotatably supported by said table, pipe gripping devices suspended from said ring and a closing socket for said pipe gripping devices vertically operable in .the table.

18. IVell drilling apparatus, comprising a rotary table, a ring rotatably supported by said table, pipe gripping devices slidingly supported by said ring and a closing socket for said pipe gripping devices vertically operable in the table.

14. In well drilling apparatus, a rotary table, a ring rotatably supported by said table, pipe gripping devices having inclined sliding connection with said ring and .a tapered socket slidingly connected with said pipe gripping devices and vertically operable in the table.

15. In well drilling apparatus, a rotary t'able, a tapered socket vertically operable in the table, pipe gripping devices operatively engaged by said socket and. abutment means for said pipe gripping devices having an inclined connection with the pip-e gripping devices inclined reversely to the incline of the tapered socket.

16. In apparatus of the character disclosed, pipe gripping members having reversely inclined side and end walls and c orrespondingly inclined reversely operating socket members engaged with the reversely inclined end and side walls of the pipe gripping members.

17. In apparatus of the character disclosed, pipe gripping members having reversely inclined outer walls, socket members reversely inclined to lit the reverse inclines of the gripping members and power mechanism lfor relatively shifting said socket members. l A n 18. In apparatus of the characterv disclosed, pipe gripping members having re versely inclined outer walls, socket members ievers'elyinclined to it the reverse inclines of the gripping members and power mechanism for relatively shifting said v socket members, the reversely inclined .portions of said pipe, gripping members being slidingly keyed in the respective socket members, whereby upon relative approach and separation of said socket members, the grip members will be positively shifted in pipe gripping or pipe releasing directions.

l19. In apparatus of the character disclosed, pipe gripping members having reverselyinclined outer walls, socket members reverselydnclined to lit the reverse inclines of the gripping members and power mechatable in relatively. rotatable relation thereto and a closing socket for said pipe gripping members non-rotatable with respect to the table and vertically operable in regard to the table to effect a closing movement of the pipe gripping members.

21. In well drilling apparatus, a rotary table, means carried thereby for actuating a joint coupling or uncoupling tool, p'pe gripping members rotatably supported by the table in relatively rotatable relation thercs.

to and a closing socket for said pipe gripping members non-rotatable with respect to the table and vertically operable in regard to the table to effect a closing movementof the pipe gripping members, said pipe gripping members having. slidingly keyed engagement with. said socket and withthe supporting means on the table so as to be. positively actuated in opening as well as in closing movements.

22. In well drilling apparatus, a rotary table, a support mounted thereon. a ring rotatably mountedin said support, pipe gripping members movably suspended from said ring, a sleeve vertically operable in the table and adapted to be coupled and uncoupled indriven relation thereto, means for securing said sleeve against rotation when uncoupled from the table, power mechanism for raising and lowering the sleeve in respect to the table and a closing socket carried by the sleeve and operatively connected with the pipe gripping members.

23. In well drilling apparatus, a rotary table, a support mounted thereon, a iing rotatably mounted in said support, pipe gripping meinbers movably suspended from said ring, a sleeve vertically operable in the table and adapted to be coupled and uncoupled in driven relation thereto, means for securing said sleeve against rotation when uncoupled from the table, power mechanism for raising and lowering the sleeve in respect to the table and a closing.V socket carried by the sleeve and operatively connected withthe pipe grip-` ping members, said pipe gripping members having reversely inclined sliding keyed connections with said socket and supporting ring respectively.

24. In apparatus of the character disclosed, the combination with a rotary table, of a grip supporting attachment removably mounted on said table, pipe gripping devices suspended from said supporting attachment, a grip closing sleeve vertically operable in the table and constructed to open and close the grips on a pipe extending down through, the table and power mechanism for raising and lowering said sleeve.

25. In apparatus of the character disclosed, a rotary table, posts mounted on said table, a spider carried by said posts, pipe gripping devices carried by said spider, means for securing said pipe gripping devices against rotation with said spider, one of said posts being extended above the spider, a tongs supporting collar adjustably mounted on the eX- tension of said post and the pipe tongs rotatably engaged on the post and positioned. b said collar to engagea section of pipe a ove the pipe held by the gripping devices to thereby impart rotation of the table to the pipe section thus engaged.

2G. In apparatus of the character disclosed, a rotary table, a drive sleeve cooperating therewith. and operating vertically therein,

pipe gripping devices actuated by said vertically operating sleeve, a bolt for securing said sleeve against rotation in the various vertical adjustments of the same in the table and mechanism for operating said locking bolt, including a control connection extending into position above the level of the table.

27. In apparatus of the character disclosed, a frame comprising longitudinal side beams connect-ed in spaced relation by crossV beams, a rotary table and power cylinders mounted on the frame with the power cylinders at opposite sides of the table and with the table and power cylinders on a longitudinal line substantially parallel with the side beams of the frame, a drive shaft for the table mounted on the frame transversely of the side beams and means at one side of said frame for effecting the drive of said shaft.

28. In apparatus of the character disclosed, the combination of a rotary table, a sleeve mounted for vertical movement in the table independently of the rotation of the same, a pipe grip member and. a socket .member therefor, one of said members being carried by the vertically movable sleeve and the other member being supported stationary as regards the vertical movement of the sleeve and power means for raising and lowering the sleeve.

29. In apparatus of the character disclosedfthe combination with a rotary table the table, a socket for closing said grip devices upon the pipe and means for raising said socket to close the grip devices upon the pipe and for lowering the socket to release the grip devices from holding engagement with the pipe.

30. In apparatus of the character disclosed, the combination with a rotary table, of pipe gripping means carried thereby and operable to grip a pipe extending through the table for rotating said pipe with the table and a power actuated pipe grip opening and closing socket operable vertically in the table and independently of rotary movement of the table for positively actuating said grip means to hold the pipe or to release the pipe.

31. In apparatus of the character` disclosed, the combination of a rotary table, a drive sleeve operable vertically in said table, power means forraising and lowering'said drive sleeve in the talble, means for coupling said drive sleeve to rotate with the table and operable to release said sleeve from driven engagement with the table, means for securing said drive sleeve against rotation when released from the table and operable to hold the drive sleeve in various positions of vertical adjustment of the same, pipe grips suspended by the table, movably supported thereby for gripping engagement with or release from a pipe ext-ending down through t-he drive sleeve and a grip closing socket carried by the drive sleeve and operable by vertical movements of the latterto set the grips on the pipe or release the grips therefrom.

32. In apparatus of the character disclosed, the combination of a rotary table,` a drive sleeve operable vertically "in said table, power means for raising and lowering said drive sleeve in the table, means for coupling said drive sleeve to rotate 'with the table and operable to release said sleeve from driven engagement With the table, means for securing said drive sleeve against rota-tion when released from the table andoperable to hold the drive sleeve in varipus positions of vertical adjustment of the same, pipe grips suspended by the table, movably supported thereby for gripping engagement with or release from a pipe extending down through the drive sleeve and a grip closing socket carried the drive sleeve and operable by vertical movements 'of the latter to set the grips on the pip'e or release the grips therefrom, the suspension of the pipe grips being effected by a member rotatably supported on the table whereby said pipe grips while hung from the table may remain stationary with the drive sleeve while the table rotates.

In testimony whereof I hereunto aix my 1 signature.

VVALDO SHELDON.

and means connected therewith for actuating

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