US1636667A - Deep-well-drilling apparatus - Google Patents

Description

1,636,667 y 1927' c. E. REED DEEP WELL DRILLING APPARATUS Filed Jan. 12, 1927 2 Shoots-Sheet 1 C/arence E. Reed INVENTOR.

7 1,636,667 July 1927' c. E. REED DEEP WELL DRILLING APPARATUS Filed Jan. 12, 1927 2 Sheets-Sheet 2 F/lg. 2.

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C/ar'ence Z/Qeed INVENTOR.

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Patented July 19, 1927.

UNITED STATES CLARENCE E. REED, OF WIGHITA, -KANSA S.

DEEP-WELl'a-DBILLING APPARATUS Application filed January 12, 1927. Serial No. 100,868.

My invention relates to earth boring drills, particularl means for assembling and securely hol in the parts of a roller boring drill used in rilling deep wells.

One object of my invention is to provide a cutter and bearing assembly capable of insertion into a bit head, having an inverted V shape recess at one end, the bit head being a one piece casting or forglng.

Another object is to obtain ample strength to resist thrusts, which are universal in direction when considered over the range of operations entering the bore, sinking the well and removal of the tool from the bore hole.

Another object is lubrication of the parts when oil lubrication is desirable.

The invention consists in the features and combination and arrangement of parts hereinafter described and pointed out in the claims.

In the drawings Fig. 1 is a view partly in section on the center line and partly a side view of a, ortion of a bit embodying the invention. ne side of this-figure shows the roller and bearing in dotted outline and means for lubrication. Fig. 2 is a sectional view on two planes taken on the line A A of Fig. 1. Fig. 3 is a view of the bearing looking into the socket of the ring section on the line of the axis of the roller. Fig. 4 is a view of the base or side of the roller. Like numerals of reference are used to designate like parts in all the views.

In these drawings 1 represents the lower portion of the bit head; 2 is the bearing; 3 is the roller; 4 is the lock; 1 is an angle face on the bit head; 1 is a seat recess in the face of one side of the V; 1 is a centrally disposed flushing fluid passage way; 1 represents an integral projecting portion of the bit head between the bases of the frusto conical rollers; 1 is a recess in the side of the bit head to permit insertion of the lock 4; l is a hole in the angle face 1 for insertion of the shank 2 of the bearing 22".

The bearing member 2, is split on the center I line and the halves are designated 2 and 2". 2 is the shank of the bearing; 2 is the base portion; 2 is the bearing face of the ring section; 2 is the socket or recess within the ring section of the bearing. The dotted line 2 represents under-cutting of the ring section of the bearing to an outline corresponding to the shape 0 the flan e 3 on the roller. 3 is the-roller, and this r0 ler may be either an integral one piece roller or it ma be formed in two or more sections, the dividing lines of which are indicated by 3. 3" is the stem of the roller; 3 is a flange on the stem. This flange may be formed either beveled as shown or cylindricaland rectangular in cross section; 3' represents the groove in the base or side of the roller. The flange 3 is cut away on one side of a diametrical line as indicated by 3. If the. flange and groove are made cylindrical instead of tapering as shown in the drawings, the flange would be cut awa' on one side to correspond to the dotted line 3* as that line a pears on Fig. 4 on the same side of the iameter as the full line 3.

The lock 4 is formed with guideways and lugs, corresponding to similar shaped guidewags and lugs on the end of the shank 2 an in assem lin the lock is rotated a quarter turn, which rings the lugs of the lock 4 under the corresponding lugs on the shank 2, and in this assembled condition is held b retaining means, not shown, inserted in tile guideways. As this lock in combination with a bearing is the subject matter of another application, it is not further described herein.

This invention may be used either as a slush lubricated bit or with oil lubrication. If oil lubrication is to be used, I prefer to use a hollow stem (cavity f) on the cone, a conduit g) in the shank of bearing, plunger (h) in the conduit and above the plunger a vent (i) to the central flushing fluid passage way (1). The pump pressure automatically feeds the lubricant to the'bearing surfaces through the outlets (j).

The cavity within the roller is indicated in dotted outline at f, the conduit within the bearing is g; plunger IL, vent z, and the outlets j, all in Fig. 1.

The cutters, of course, are formed with teeth as is usual to disintegrate the bottom of the hole as the drill is rotated One form of tooth is shown on the section of cone in Fig. 1 of the drawings.

.In operation the roller will be assembled with the bearing by inserting, the ring portion of one-half of the bearing within the groove 3. This isreadily done by passing half of the ring portion of the bearing over the flange portion 3'. After seating the ring in the groove the roller is rotated a half turn and the other half of the bearing 2 is inserted in the groove in the same manner. The two halves of the bearing when assembled with the cone fit close together. Thering section of the bearing completely fills the groove 3' in the cone and closely surrounds the stem 3" and the flange 3 and securely holds the roller for rotation on the bearing 2" and against longitudinal movement. The roller and bearing assembled as a unit, the shank 2 is inserted in the bore 1 of the head, the base portion 2 of the bearing seating against the an le face 1 in the recess 1 of the head. The Iock 4 is then inserted through the recess 19 and secured to the end of the shank by a quarter turn,

.which securely locks the two piece bearing together in the bit head.

When it is desired to use oil lubrication the plunger is inserted in the conduit g and the cavity 7 and the conduit 9 are filled with lubricant before assembling in the usual way. In operation the pressure of the fluid in the central passage way 1 will automatically,

- through the vent 2', force the plunger h to feed the lubricant to the bearing surfaces.

' through the outlets j.

' The apparatus shown is presented herein as illustrative of the invention and not as a limitation upon its scope, which is defined by the appended claims.

: I claim as my invention:

. 1. In combination in a roller boring drill including a head having a V-shaped recess at the lower end thereof, a cutter or anization comprising a frusto-conical roller having an integral stem and a flange integral with said stem thereon, a socket bearing including a ring surrounding the said stem and flange of the roller cutter, the said bearin seating in a recess in the face of the V an said bearing having a shank projecting at an angle to the axis of the roller, the said cutter organization being handled as a unit for insertion in the V-shaped recess, and means to lock the shank in the body.

2. In a drill, a roller provided with an integral stem with an integral flan 'e there on, both within the plane bounding the roller, and a sectional bearingwith an integral-collar surrounding said stem and flange, the flange being partly cut away to permit insertion of one section of the bearing at a time into the groove in the" roller, the roller in assembled position being securely held for rotation on the collar.

3. In an earth boring drill, the combination of a roller with a stem and flange, a bearing fitting within the roller and filling being cut away to provide a gate, and a bearing for said roller split lengthwise to provide two sections, each of WhlCh sections has a flange adapted to pass into the groove of the roller by way of said gate, and fit under the'flange of the stem of the roller, a bit head and means for holding 'the sections of the bearing to said head, substantially as described.

5. In an earth boring drill a roller cutter having a stem within it witha oove between said stem and thesurroun ing body of the roller, said stem at its end havinga flange overhanging the groove, said flange being cutaway to provide a ate and a bearing for said roller split lengthwise to provide two sections, each of which sections has a flange adapted to pass into the groove of the roller by way of said gate, and fit under the flange of the stem of the roller, a bit head and means for holding the sections of the bearing to said head, the flanges of the sectional bearing filling the groove within the roller cutter below the flange of the stem, substantially as described.

I 6. In an earth boring drill a roller cutter having a stem within it with a oovebetween said stem and the surroun ing body of the roller, said stem at its end having a flange overhanging the groove, said flange being cut away to provide a gate and a hearing for said roller split lengthwise to provide two sections each of which sections has a flange adapted to pass into the groove of the roller by way of said gate, and fit under the flange of the stem of the roller, a bit head and means for holdin the sections of the bearing to said head, the flanges of the. sections of the bearing when in place against each other present a frusto-conical outer surface, the outer wall of the groove of the roller cutter being of like form, substantially as described.

7. In a drill, an integral flange so shaped on a stem within a roller that the bearing on which the roller turns may be inserted to fill the groove within the roller below the flange and thus hold the roller to the bearing for rotation thereon, the bearing having a shank at an angle to the axis of its spindle.

8. In an earth boring drill a roller cutter and bearing held together by interfitting flanges respectively integral with said parts, said flanges being so shaped as to permit said roller'to be removed from the bearing, said roller having a bore which is filled below the shaped as to permit interfitting within the flange thereon by the intrfittin part of the roller, and filhng the bore therein below the bearing, the body of roller close y contacting flange, the bearing having a shank extending the exterior area of the hearing within the beyond the roller for holding the roller to 5 bore, substantially as described. the bit head, substantiall as described.

9. In a drill, a roller and bearin held to- In testimony whereof, aflix my si ature. gether by interfitting integral anges so CLARENCE E. R ED.

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