's'pt. 23, 1924. 1,509,547 H. .R. DECKER ROTARY v Filed Sept. 18. 1920 Patented Sept. 23, 1924. UNITED STATES PATENT 'oFFicE. nanny n. D Ecxnn, or noUsroN, rms. ROTARY. Application led September 18, 1920. Serial No. 411,270. To all whom it may concern.' Be it known that I, HARRYR. Dncm, a citizen of the United States, residin at .Houston, in the""county of Harris and tate imgroveifneiits in a rotary. n'efobject of the invention is to provide arotary designed to be used in drilling wells .the rotary tab i to prevent the spreading of the grip' rings illustrated in and 'embodying a novel means for holding e on the bed plate. Another object of the invention is to provide in a rotary a locking device designed of the gripping device, through which the drill stem is rotated. A further feature of the invention resides in the provision of an improved form of a bearing, for the drive shaft. With the above and other objects in view, the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification, and the accompanyingl drawings, wherein Figure 1 represents a side view of the rotary, shown partially in section. Figure 2 shows a plan view of the rotary table with the pipe gripping device mounted thereon. Figure 3 shows a transverse sectional view of the shaft bearing, takenl on the line 3-'3 of Figure 1. Figure 4 shows a side view of the anchor eiployed to hold the table on the base P Figure 5 shows a bottom view thereof.- Figure 6 shows a transverse sectional view taken on the line6-6of Fi e5. Figure 7 shows an end eevation of the pi gripping device which is shown parti ly in section. Figur view taken on the lines 8-8 of Figures 2 and 7, and 1 4Figure 9 shows a side view partially in section of the clutch yoke employed. ` Referring now more particularly to the drawings, wherein like numerals of reference desi ate similar parts in each of the figures, e numeral 1 desi ates the su porting sills whereon the ase plate 2 tis mounted. This base plate is provided with e 8 shows a fragmentary sectional f an annular race-way 3 wherein the roller bearings 4. are located, and mounted upon these bearings is the rotar underside is provided wit a race-way 6 which receives the bearings 4. The baseplate has a-'central opening therethrough, through which the sleeve 7, depending from the' rotary,extends. The underside of the table is formed with a beveled gear face 8 with which the pinion 9 meshes. This pinionvis fixed to the inner end of the shaft 10, which is rotatable in suitable bearings 11 and 12, `mounted on 'the sills 1. A convenient type of bearing is further illustrated in Figure 3, and is employed for convenience table 5 whose in demounting the shaft 1Q, which must often be done for repairs. This form of bearing includes a concave seat 13 in the sill 1, and a correspondingly shaped block 14, fitted therein and which has a flat upper face. Mounted upon this block is the bearing proper formed with the removable ca 15,- which is bolted on the bearin and whic may be readily removed. Suita le bolts 16,l 16 are passed upwardly through the plate 13, the block 14. and the bearing flanges 1.7 17, and are secured in place by vmeans o nuts threaded onto the upper ends thereof. In case it'is desired to demount the inion 9, the cap 15 and the bolts 16 ma removed and the black 14 then mov around llayoosely mounted on the shaft 1Q, there is a sprocket wheel 18 to `which rotation is imparted by means of a suitable sprocket chain L (not shown), and thel inner' face of this' sprocket wheel has a clutch member 19 with which the clutch 20 may be enga clutch is s lined on-the shaft an when engaged wit the clutch member 19, it im-y parts rotation to said shaft. 'This clutch` may be manipulated into and out of engagement, by means of the clutch lever 2 1 and This through the instrumentality of 'the c utch" l yoke 22. The rotary `table has a central openuii p thereto, to permit the assage of the dr stem andthe wall of isopening 1s provided with oppositely: disposed vertical dovetailed grooves 23, 23 into which theA y correspondingly shaped dovetailed posts 24, 24 fit.. Theupper ends of these posts are bifurcated, forming the spaced fingers 25, 25 and extending transversely through aligned bearings in these fingers, are the adjusting shafts 26, 26. The sections of these shafts, between said iin ers, are polygonal in form, as shown in igures 1 and 8, to receive a wrench, by meansV of which the shafts may be turned and the ends of the shafts are reverselyl threaded, and screwed through the corresponding ends of the op- Ipositely disposed castings 28, 28. These castings are hood-like in form and have ring shaft29, arranged atri ht angles to and in the same'plane with t e ad]ustin shafts 26, and having end bearings in said castings. Rotatably mounted on these shafts 29, are the sleeves 30, 30 upon which the spaced grip rings 31, 31 are splined. These grip rings are provided to engage Awith and rotate the drill stem. It is obvious that by applying a' wrench to the adjusting shafts 26, as hereinbefore explained, and turning said shafts in one direction, the castings 28 'may' be forced .apart and the griprings released from the stem and b turning said shafts in the other direction the castings may be pulled together, and the grip rings carried into engagement with the pi e. When adjusted to any position, the shaft 26 may be locked lagainst any further movement, due to vibration in operation, b means of the locking dog-32, shown in igure 8. This dog is formed to fit over the pol gonal section of the shaft 26 between the fingers 25, and it has an extension 33 which engages against the web 34, between said fingers and the shaft 26, to which it is applied, will be thereby locked `against rotation, and the grip rings thus held securely in engagement with the drilll stem., As the castings 28 are adjusted back and forth, they move on the transverse tracks 34, which are dovetailed in the undersides thereof, and which Y. are formed integrally with the respective posts 24, 24. 'For the purpose of anchoring the rotary table to the bed plate, I have provided an annular'groove 35 around the periphery of thetable underneathV the gear face' 8 and an anchor, presently to be described, is secured to the bed plate, and fits into this groove on the driven side of the table. This anchor includes an arcuate rib 36 which fits in the groove 35 and formed integrally with this rib, on each side .of the driving inion 9, are/the anchor posts 37, 37, and t e re- Llamas-1I: posite said braces, by means of suitab e' bolts 42. These bolts pass through the repective slots 39, and also throu h the .ange 41. The inner end of each lt 42 is formed with a head which is seated in a counter-sunk groove 43, in the inner side of the anchor post, Aso as to bring said head flush with the inner side of the st. And the outer end of each bolt 42 is t readed to receive the nut 44, which is screwed thereon. `As shown in Figure 4, the outer face of each anchor post is knurled or rough-` ened so that it will not readily slip in the fiange 41. The anchor for the rotary table is thus securely fastened to the base plate, but may be adjusted to take up any wear, by loosening the nuts 44 and tightening up one of the nuts 40, and then again ti htening said nuts 44. It is to be no that the rotary table is anchored down at its thrustreceiving side, that is, on the side of the driving pinion 9, and may be readily adjusted to take u any wear of the intermeshing teeth. Il`he flange 41 not only protects the reduced lower end of the rotary, but also strengthens the base late. In drilling through hard ormation, the, drill stem often jumps, imparting an upward thrust which has a tendenc to lift the rotary table from the base ate and the rib 36 is extended around in t e oove 35 on each side of the pinion 9, a su cient distance to prevent the dis lacement of the rotary table, by reason o the 'umping of the drill stem or from any ot er cause so that said table will at all times be securely held in position. What I claim is: 1. A rotary, including a base plate, a rotary table mounted thereon and formed with a beveled gear face and an annular roove, a driving pinion in mesh with sai gear face, an anchor for holding the table on the base plate, said anchor consistin of an annular upstandiug fiange integra with the base plate, and closely surroundin the rotary table; an arcuate rib fitted into said groove and anchor posts formed integrally with the rib and secured to the iiange on opposite sides of said pinion. 2. A rotary, including a suitable base, a table rotatably mounted thereon and formed with an annular peripheral groove, means llt for frotatin the table, an 'anchor :for holding the tab e on the base, said anchor con sisting of an annular u standing fiange integral with the base an closely surrounding the rotary table; an arcuate rib adapted to fit into said groove, and anchor posts secured to the rib and adapted to be secured also to said iange on opposite sides of said rotating means. 3. A rotary, including abase plate, a rotary table mounted thereon and formed with a beveled gear face and an annular peripheral groove, a drive pinion intermeshlng wlth said gear face and imparting rotation to the rotary table, an anchor provided to withstand the thrust of said pinion and including an annular upstanding iiange integral With the base plate and closely surt rounding the rotary table; an annular rib fitted into said groove, and anchor posts arranged on opposite sides of the pinion, said posts being formed integrally with the rib and being secured to the ange. 4. In a rotary, a base plate, a rotary table mounted thereon, a pi e gripping device carried the table, sai vice 1nc u ing op osln castm 1 rin mounted thereon,padjuting shtsgltliieaded through said castings, through which "the castings may be adjusted toward and from each other by rotating the shafts, and a locking dog ada ted to be a plied to said shafts to prevent t ve rotation t ereof. pipe grippmg de- 5. In a rotary, a supporting post, an adjusting shaft having a bearing 1n said post, a locking dog adapted to be appliedto the shaft and which locks against the post to prevent the rotation of the shaft, and a pipe gripping device carried by the rotary and with which said adjusting shaft is operatively connected. 6. A rotary including a base plate having an upstanding annular bearing flange forming a housing, a rotary table mounted on the base plate and formed with a beveled gear face, said rotary being reduced beneath said ear face and fitting Within said bearing an e housing, means for holdin the table on t e base plate and means for riving the rotary. 7. A rotary including a base late having a central opening, an upstan ing annular bearing iange carried by the base plate, and surrounding said opening and forming a housing, a rotary table mounted on the base plate, and tted Within said housing, means for holding the table anchored to the base plate and means for driving the rotary. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. HARRY R, DECKER. Witnesses: J. C. MoConMIoK, G. C. Bannister.1



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