US1821366A - Rotary machine for well drilling - Google Patents

Description

Sept. 1, 19316 'E. TIMBS ROTARY MACHINE FOR WELL DRILLING Filed May 2, 1927 2 Sheets-Sheet l Sept. 1, 1931. E. TIMBS ROTARY MA CHINE FOR WELL DRILLING 2 Sheets-Sheet 2 Filed May 2, 1927 gwuentoz Patented Sept. 1, 1931 UNITED STATES PATENT OFFICE EDWARD TIMES, LOS ANGELES, CALIFORNIA, ASSIGNOR TO THE NATIONAL SUPRLY COMPANY OF DELAWARE, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE ROTARY MACHINE FOR WELL DRILLING Application filed Kay 2,

This invention relates to rotary machines, and is more particularly related to a rotary machine adapted for use in drilling oil and like wells, the construction of which is-such as to provide a unit assembly machine which may be transported from place to place and easily set in position in the well derrick or rig and it likewise includes a unit assembly pinion shaft providing an overhanging 1o sprocket which may be removed from the assembly as a unit. J

An object of this invention is to provide arotary machine for use in connection with the drillingof wells, which is constructed so as to permit the same to be assembled as a unit and which is provided with a unitary assembly pinion shaft providing an overhanging sprocket.

Another object of this invention is to provide a rotary machine for use in connection with the drilling of wells, which is of such construction as to provide a unitary assembly and which includes a unitary assemblypinion shaft providing an overhanging sprocket intermediate which unit assembly pinion shaft structure and rotary machine, there is provided a rotation lock.

Another object of this invention is to provide a rotary machine for use in drilling wells, which includes a base, atable supported by the base, the table and base being so constructed as topermit the same to be assembled with a unitary assembly pinion shaft structure, and which rotary machine is likewise provided with a hold-down bracket which is secured to the base and rotatably connected with the table above the gear teeth of the table, and which hold-down bracket provides a guard-preventingthe introduction of foreign matter into the structure of the rotary machine.

\ Other objects and advantages of this invention, it is believed, will be apparent from thefollowing detailed description of a pre: ferred embodiment thereof, as illustrated in the accompanying drawings.

In the drawings:

Figure 1 is a perspective view of a rotary machine embodying this invention. l

1927. Serial No. 188,109.

Figure 2 is a central sectional'side elevation thereof.

' Figure 3 is an end section taken substantiallyon the line 33 of Figure 2.

F lgure 4 is a sectional end elevation takensubstantially on the line 4-4. I Figure 5 is a detailed view of the hold-. down bracket and integral foot rest embodied in this invention. a

In the drawings, 1 illustrates a pair of skids, preferably formed of metal I-beams.

The skids 1 are spaced apart and support the base 2 of the rotary machine. The base 2 is secured to-the upper transverse web 3 of the skids 1 by rivets 4 which are passed through bores formed in the base 2 and through the upper web 3 of the skids 1. The'base 2 is preferably formed with a depending section 5 which provides shoulders 6 which engage with inclined teeth 13 which mesh with and o are driven by the pinion gear 14.

Meansare provided for rotatably support- I ing the table 9 on the ring 8 of the base 2, which means are preferably of the following construction Mounted in the. annular recess 15 formed in the ring 8 is a bearing race 16. Mounted on the reduced portion 17 of the table 9 below the shoulder 18 thereof is a second bearing race 19. Mounted between the races 16 and 19 are balls 20. The annular recess 15in which the bearing race 16 is mounted is of greater width than the width of the race 16 so as to provide a lubricant receiving reservoir 20a into which lubricant is introduced to lubricate the balls 20.

Means are provided for holding the-table- 9 down to the base 2 as the table 9 is rotated,

. 9a of the ring 8 is a hold-down bracket 21 which in cross-section is substantially of S-shape and which is preferably formed in two sections meeting together on a diametrical line of the rotary table and aligning with the axis of the driving pinion 14, so as to permit the same to beclamped into position. The sections of the hold-down bracket 21 are held in position by means of bolts 22 which are passed through the horizontally extending flange 22a of the hold-down bracket 21 and the circumferential flange 9a of the ring 8. The-upper inwardly extending circumferential flange 23 of the hold-down bracket 21 extends into an annular recess 24 formed in the ring 12 and bears, at its lower surface 25, upon the surface 26 of the ring 12. Formed in the ring 12 are lubricant receiving reservoirs 27 which are provided with caps 28 which are screw-threaded into position so that their upper surface is flush with the upper flat surface of the table 9. The lubricant receiving reservoirs 27 are provided with outwardly extending ports 28a through which the lubricant within the reservoirs 27 is thrown by centrifugal force to lubricate the bearing surfacebetween the holddown bracket 21 and the rotarytable 9. The hold-down bracket 21 provides a guard which encloses the gear provided by the teeth 13 and the bearings provided by the balls 20 preventing dirt or other foreign matter to be introduced into the working parts of the rotary machine.

Formed on one section of the hold-down bracket 21- is a foot rest 29 which is provided with a serrated surface 39. The foot rest 29 is provided so as to provide a support against which the operator racking the drill stem as the same is taken apart in sections or stands may brace his foot against to enable him to pull thelower portion'of the stand which-is hung up in the oil well rig over to the part of the rig where the same is to be stood on end.

Means are provided for supplying lubricant to the reservoir 20a for lubricating the balls 20, which means preferably comprise a boss 31 which is cast integral with one portion of the hold-down bracket 21 and from which there is provided a passage communieating with the interior of the hold-down bracket 21 so that lubricant may pass into the interior of the hold-down bracket 21 and into the reservoir 20a. The ring 8 is provided on its inner periphery with an upstanding annular flange 32 which provides on its inner surface a bearing surface for the reduced portion of the table 9 and through which recesses 33 are formed at spaced intervals so as to permit lubricant from within the reservoir 20a to overflow and lubricate the bearing surfaces between the ring 8 and reduced portion of the table 9.

In order to rovide an easily transportable unit assem ly rotary machine, it is preferable that the pinion gear 14 be mounted upon an independently assembled pinion shaft unit which isedetachably connected as a unit to the rotary machine. In order to accomplish this result, the following construction is provided: I

Formed in the outwardly extending portion 34 of the base 2 are parallel ways 35 which are spaced apart. A housing 36 is provided for enclosing the bearings and shaft 37 to which the pinion gear 14 is secured. The housing 36 is provided with oppositely extending feet 38 which fit within the ways 35. Bolts'39 are passed through the feet 38 and through the portion 34 of the base 2. In order to permitthe pinion gear 14 to be inserted in position to engage the teeth 13, the hold down bracket 21 is cut-away, as illustrated at 40. Formed around the cut-away portion 40 of the bracket 21 is a boss 41. The pinion gear 14 is secured to the shaft 37 by any suitable or desirable means, such as the key 42. The pinion gear 14 is provided with a cylindrical, rearwardly extending section or hub 43 upon which a lock ring 44 is mounted and secured by a key (see Fig. 3). The lock ring 44 is of course, of considerably larger diameter than the hub of the pinion, and is so formed as to provide a guard of enlarged area to impart thrust to the end of the bearing housing and to prevent the introduction of dirt and foreign matter into the end thrust the end of the housing 36 and the shoulder 46 of the pinion gear 14. Secured to the base I 2 by means of pins 47 which'pass through eyes .48 formed integral with the base 2 are lock bars 49 which are adapted to be engaged within cutaway recesses 50 formed in the lock ring 44.

The housing 36 encloses roller bearings 51 and 52 upon which the shaft 37 is journaled and is preferably of the following construction: 9

As heretofore set forth, the housing 36 is provided with feet 38 which fit within the ways 35 provided in the base 2 and the housing 36 also is constructed so as to permit the same to be moved from off the shaft 37 when it is desired to take out or repair either of the bearings 51 or 52. The housing 36 is preferably cylindrical in form so as to enclose the shaft 37 and is, on its inner surface, provided with a section of reduced diameter, as illustrated at 53- Within which the bearing sleeve 54 is fitted. Mounted on the shaft 37 is a secondv bearing sleeve 55. Intermediate the bearing sleeves 54 and 55 are mounted rollers 56. The shaft 37 is of increased diameter at the section 57 and a sleeve 58 is mounted on this section of increased diameter in position to engage at its outer end the bearing sleeves 54 and 55. The sleeve 58 is provided at its outer end with a' circumferential flange 59 which is of substantially the same exterior diameter as the interior diameter of the housing 36 at the portion of reduced diameterof the housing 36. The sleeve 58 is, at its opposite end, provided with a second circumferential flange 60 which is of larger diameter than the circumferential flange 59 and is of substantially the same exterior diameter as the interior diameter of the portion 61 of the housing 36. The sleeve 58 engages at its in transversely extending ducts 66. The ducts 66 communicate with circumferen'tially extending ducts 67 formed in the bearing sleeves 54 and 63, respectively. Caps 68 are provided for enclosing the lubricant fittings 65.

Secured to the end of the housing 36 is. an

i end plate 69. Interposed between the face of the end plate 69 and the end 70 of the housing 36 are shims 71. The bearing plate 69 engages on its inner surface the outer ends of the bearing sleeves 54 and 55 so that the entire bearing assembly within the housing 36 may be adjusted longitudinally of the shaft 37 to take up wear upon the end thrust washers so as to insure correct engagement of the threads of the. pinion gear 14 with the threads 13 of the ring 12. This adjustment is accomplished by use of the proper shims 71 between the end of the housing 36 and end plate 69.

Means are provided for maintaining one of the thrust washers 45 stationary, which means preferably comprise a pin 72 which is inserted into position Within a slot formed in the housing 36 through a cut-away formed in the thrust washer. The other thrust wash- 'er 45 is permitted to float freely in position.

Mounted on the end of the shaft 37 is a sprocket 73 which overhangs the entire rotary machine structure. The sprocket 73 is preferably provided with a longhub. 74 to provide sufficient bearing surface on the shaft 37 and is secured to the shaft 37 by means of the key 75, which is inserted within a tapered key-Way 175 formed on the interior of the hub 74. In order to permit the sprocket 73 to be reversed in position on the shaft 37 so that the same may be alined with the drive sprocket of the rotary draw works, not shown, the inner periphery of the hub 74 is provided with an oppositely inclined keyway 176 into which the key may be fitted. Secured to the end of the shaft 37 .is a cap 76 which is secured in posit-ion .by means of a bolt 77 screw-threaded to the end of the shaft 36. The sprocket teeth 177 of the sprocket 73 are formed in-ofi' center position on the hub 74 preferably at one end thereof to provide an adjustment of the teeth 77 in relation to the rotary drive sprocket of the draw works (not shown) when the hub 74 is reversed on the sh aft 37.

In order to permit'aguard, not shown,

to be secured to the rotary machine assembly, an ear 78 is formed on the base 2 and a second ear 79 is secured on one of the skids 1. Between the ears 78 and 7 9,-a rod 80 is secured in which the guard, not shown, may be pivotally mounted. i

Mounted between the transversely extending webs of the I-bea'ms 1 on the exterior of the rotary machine assembly are plates 81 which provide a bearing surface against the derrick sills (not shown) between which the rotary machine is set. The plates 81 are provided to overcome the tendency of the beams 1 to cut into the sills due to the pull of the rotary drive chain (not shown) on the overhanging sprocket 73.

Having fully described my invention, it is to beunderstood that I do not wish to be limited to the details of construction herein set forth which maybe varied'without departing from the spirit of my invention, as

defined by'the appended claims.

I claim:

1. In a rotary machine, the combination of a base, a table rotatably supported by the base, ,means mounted on the base for driving the table, which means preferably comprise a housing removably secured to the base, a shaft journaled in hearings in the housing, a pinion secured to the inner end of the shaft in positionto mesh with gear teeth formed on the'table, and a rotation lock including an element secured on the hub of the pinion overhanging the end of the housing, and an elementmounted on the base and adapted to be engaged with the element mounted on the shaft.

2. In a rotary machine, the combination of a base, a table rotatably supported by the base, means mounted on the base for driving the table, said means including a housing removably secured to the base, a pinionshaft journaled in bearings in the housing, a pinion gear secured to the end of the housing in position to mesh with gear teeth formed on the table, a holddown ring covering the teeth of the table and the pinion, formed in two sections meeting together on a line aligning with the axis of the pinion, a lock ring secured to the hub of the pinions intermediate the pinion gear teeth and the housing,

a base, a table rotatably supported by the base, a housing secured to the base, a pinion shaft journaled in bearings mounted in the housing, a pinion gear secured to the inner -end of the shaft in position to mesh with gear teeth formed on the base, a lock ring secured to the hub of the pinion intermediate the pinion gear teeth and the housing and having a recess on its outer face receiving the inner adjacent end of the housing, and means secured to the base and adapted to be releasably engaged with the lock ring to secure the pinion shaft to the base.

4. In a rotary machine, the combination of a base, a table rotatably supported by the base, a housing removably secured to the base, a pinion shaft journaled in bearings in the housing, a pinion with a hub secured to the shaft in position to mesh with teeth formed on the table, a lock ring secured at the hub of the pinion gear, of larger diameter than the pinion hub, thrust washers interposed between the lock ring and the housing, and imparting the thrust of the shaft to the end of the housing, and means secured to the base and adapted to be engaged with the lock ring to hold the shaft from rotating.

5. In a rotary machine, the combination of a base, a table rotatably supported by the base, the base having a circumferentially extending flange, a hold-down bracket in the form of a ring mounted on and secured to the flange, the rotary table having gear teeth formed on its under side under the hold down ring, the hold-down ring having an annular flange which extends into a circumferential recess formed in the rotary table above the gear teeth in position to engage the bottom surface of the recess in the table.

6. In a rotary machine, the combination of a rotary table, a base supporting the table and having an extension with seat-ways extending substantially parallel to a radial line from the axis of rotation of the table, said table having bevel gear teeth for rotating the same, a driving shaft with a pinion at its inner end for rotating the table, .a lock ring adjacent the pinion, a bearing housing with two separated earings within the same for the said shaft and constructed to slide over the shaft from its outer end with the inner endof the housing substantially abutting against the'side face of the lock ring, said housing seating in the said seat-ways, and a sprocket wheel secured to the outer end of the shaft beyond the hearing housing for rotating the said shaft.

7. In a rotary machine, the combination of a rotary table, a base supporting the tableand having an extension with seat-ways extending substantially parallel to a radial line 7 from the axis of rotation of the table, said table having bevel gear teeth for rotating the same, a driving shaft with a pinion at its inner end for rotating the table, a lock ring adj acent the pinion, a pair of separated bearings for the shaft, the bearing adjacent to the rotary table being of larger diameter than the outer bearing, a bearing housing seating in the said seat-ways and having a bore enabling the same to slip over the said shaft from the outer end, the said bpre being of larger diameter at its innereend adjacent the table to facilitate passing the housing over the outer bearing, and a sprocket wheel secured to the outer end of the shaft beyond the bearing housing for rotating the said shaft.

8. In a rotary machine, the combination of a rotary table, a base having a bearing for supporting the rotary table and having an extension extending outwardly from the table on a radial line from the-axis of rotation of the table, said table having bevel gear teeth for rotating the same, a driving shaft with the same with the inner end of the housing substantially abutting against the side face of the lock ring, a thrust washer disposed between the lock ring and the end of the bearing housing, and a sprocket wheel secured to the outer end of the shaft beyond the bearing housing for rotating the said shaft;

9. In a rotary machine, the combination of a rotary table, a base supporting the table and having'an extension extending substantially radially from the axis of rotation of the table, said table having bevel gear teeth for rotating the same, a driving shaft with a pinion at its inner end for rotating the table, a lock ring adjacent the pinion, a pair of roller bearings for the said shaft disposed apart, a distance sleeve on the shaft separating the said roller bearings, a bearing housing supported on the base and having a bore enabling the same to slide over the shaft from its outer end and receive the said roller bearings with the inner end of the housing substantially abutting against the outer face of the lock ring, and

a sprocket wheel secured to the outer end of I day of April, 1927.

' EDWARD TIMBS.

DISOLAlMER 1,821,366. Edward Timbs, Los Angeles, Calif. ROTARY MAcHINn For: WELn DRILLING. Patent dated September 1, 1931. Disclaimer filed December 22, 1933, by the asslgnee, The National Supply Company of Delaware.

Hereb enters this disclaimer to that part of the claims in said specification which is in the f0 owing words, to wit:

v 5. In a rotary machine, the combination of a base, a table rotatably supported j by the base, the base having a circumferentially extending flange, a hold dovvn bracket in the form of a ring mounted on and secured to" the flange, the rotary table having ear teeth formed on its under side under the hold down rin the hold-down ring aving an annular flange which extends into a circumferentia (recess formed in the rotary table above the gear teeth in posltion to engage the bottom surface of the recess in the table.

[ ial Gazette January 16, 1.984.]

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