US1692793A - Earth-boring drill - Google Patents

Earth-boring drill Download PDF

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Publication number
US1692793A
US1692793A US257259A US25725928A US1692793A US 1692793 A US1692793 A US 1692793A US 257259 A US257259 A US 257259A US 25725928 A US25725928 A US 25725928A US 1692793 A US1692793 A US 1692793A
Authority
US
United States
Prior art keywords
ring
spindle
roller cutter
roller
cutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US257259A
Other languages
English (en)
Inventor
Clarence E Reed
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL27076D priority Critical patent/NL27076C/xx
Priority to BE355760D priority patent/BE355760A/xx
Application filed by Individual filed Critical Individual
Priority to US257259A priority patent/US1692793A/en
Priority to GB32848/28A priority patent/GB306889A/en
Priority to DER76269D priority patent/DE508080C/de
Priority to FR664010D priority patent/FR664010A/fr
Application granted granted Critical
Publication of US1692793A publication Critical patent/US1692793A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles

Definitions

  • Myinvention is an improvement in the type of earth boring ent of the Unlted States granted to me, for instance, Nos. 1,636,665-6-7, July 19, 1927,
  • Figure 1 is a view of the roller cutter unit with parts in section and parts in elevat on, and with a part of the head shown in section.
  • Fig. 2 is a sectional view of the threaded l ig. 3 is a sectional view of one of the looking segments.
  • Fig. 4 is a face view of the locking segments.
  • Fig. 5 is a face view of the threaded rmg.
  • the roller cutter unit has a shank 2 to fit removably in a socket 3' of this head, where it is held by any suitable locking mem- 25 her such as indicated generally at 4. This may be of the form disclosed in Letters Patent of the United States granted to me.
  • the shank 2 extends at an angle from the base plate 5 of the unit, which base plate is adapted to fit a seat recess in the bit head.
  • the spindle may be of stepped form, presenting portions of different diameters as shown, or it may be of other forms, such for instance as conical.
  • the roller cutter which is conical or approximately so has a bore to fit in part the shape of the spindle.
  • I provide floating segments 8, 8 mounted in a groove 9 of the spindle, and of such external diameter as to project from said spindle and thus provide, 1n effect, an annular rib or shoulder.
  • the portion of the bore in the roller cutter adj acent this ring or shoulder made up of the seg- $0 ments is formed to fit said ring.
  • a ring 10 is mounted, this being connected with the cutter member by a screwthread, so that the said ring turns with the roller.
  • the screw ring 10 has sockets at 12 by which a holding implement may be engaged with the ring to hold it while the roller cutter is turned to screw it onto the ring.
  • this is done outside thebit head by first placing the screw ring on the spindle, thereafter placing the segments 8, 8 of the locking ring in position in the groove of the spindle, then screwing the roller cutter onto the screw threaded ring, and then, desirably, fixing the screw ring and roller cutter together by inserting the pin before mentioned.
  • segmental ring 8, 8 The primary purpose of the segmental ring 8, 8 is to lockthe cutter in place by providing a shoulder at its rear side againstwhich the screw threaded ring will find a retaining hearing, it being understood that this screw ring when seated in the bore of the roller cutter virtually forms a part of said roller.
  • the segmental ring is adapted to turn or float with the roller and thus has an anti-friction character or quality. In the event that lubricant is introduced into the bore of the roller, this ring will form a seal against its escape.
  • roller cutter may be lubricated is to lead oil through a conduit in the spindle, to the fore part of the bore of the roller cutter, so that this will find its way between the exterior of the spindle and the roller.
  • the ring will prevent undue escape of this lubricant. It also resists back pressure in the well and keeps sand out of the bearing.
  • ing ring enables a one piece screw threaded ring to be used.
  • the assembly can be quickly made.
  • the screw threaded ring being in one piece can be handled as one body, and as no accurate registration of parts, such as in the case of a divided screw threaded ring, is necessary, the screwing on of the cone can be performed with certainty and with ease.
  • the spindle
  • This split lock- 7 together with its base plate and shank, are all formed in one ieoe'.
  • the split loc 'ng ring can be quickly assembled by placing its sections separately into po- 6 sition from opposite sides of the spindle into the ove formed therein.
  • T e unit consisting of the shank, base plate s indle and roller cutter mounted thereon as 0. ve described, is'intended to be handled as one body in connecting it up with the head or in removing it therefrom.
  • this in the illustrated embodiment of my invention consists of a nut 4 screw threaded onto the shank of the spindle with the left hand screw-thread.
  • a locking nut also screw threaded onto the shank at 4 and there is a washer at 4.
  • the lock nut may be held on by a suitable cotter pin if desired.
  • a roller cutter unit for earth borin drills comprising a spindleand shank, sai a) spindle havin anvannular groove in its surface, a ring of one piece mounted to turn on said spindle, segmental pieces seated in the annular groove, and furnishing a retaining bearing for and engaging the front faceof the ring, and a roller cutter mounted on the spin 7 dle and to which the ring is attached, said roller cutter having a bore adaptin it to slip axially along the spindle over the segmental pieces to the, ring for attachment thereto substantially described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Rolls And Other Rotary Bodies (AREA)
US257259A 1928-02-27 1928-02-27 Earth-boring drill Expired - Lifetime US1692793A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL27076D NL27076C (enrdf_load_stackoverflow) 1928-02-27
BE355760D BE355760A (enrdf_load_stackoverflow) 1928-02-27
US257259A US1692793A (en) 1928-02-27 1928-02-27 Earth-boring drill
GB32848/28A GB306889A (en) 1928-02-27 1928-11-09 Improvements in and relating to earth boring drills
DER76269D DE508080C (de) 1928-02-27 1928-11-14 Lagerzapfen fuer Rollenschneider von Drehbohrern
FR664010D FR664010A (fr) 1928-02-27 1928-11-15 Outils perforateurs pour le fonçage de puits à pétrole et d'autres applications analogues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US257259A US1692793A (en) 1928-02-27 1928-02-27 Earth-boring drill

Publications (1)

Publication Number Publication Date
US1692793A true US1692793A (en) 1928-11-20

Family

ID=22975535

Family Applications (1)

Application Number Title Priority Date Filing Date
US257259A Expired - Lifetime US1692793A (en) 1928-02-27 1928-02-27 Earth-boring drill

Country Status (6)

Country Link
US (1) US1692793A (enrdf_load_stackoverflow)
BE (1) BE355760A (enrdf_load_stackoverflow)
DE (1) DE508080C (enrdf_load_stackoverflow)
FR (1) FR664010A (enrdf_load_stackoverflow)
GB (1) GB306889A (enrdf_load_stackoverflow)
NL (1) NL27076C (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176724A (en) * 1977-11-14 1979-12-04 Smith International, Inc. Rotary rock bit and method of making same
US5586611A (en) * 1995-10-13 1996-12-24 Cypress Services, Inc. Drill bit having dual split bushings for cutter support and retention
US20150027785A1 (en) * 2011-04-29 2015-01-29 Brent Lane Borehole cutter retention and fastening/locking system
US11174683B2 (en) * 2019-02-25 2021-11-16 Century Products, Inc. Tapered joint for securing cone arm in hole opener
US11492851B2 (en) * 2016-02-26 2022-11-08 Halliburton Energy Services, Inc. Hybrid drill bit with axially adjustable counter-rotation cutters in center

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176724A (en) * 1977-11-14 1979-12-04 Smith International, Inc. Rotary rock bit and method of making same
US5586611A (en) * 1995-10-13 1996-12-24 Cypress Services, Inc. Drill bit having dual split bushings for cutter support and retention
US20150027785A1 (en) * 2011-04-29 2015-01-29 Brent Lane Borehole cutter retention and fastening/locking system
US11492851B2 (en) * 2016-02-26 2022-11-08 Halliburton Energy Services, Inc. Hybrid drill bit with axially adjustable counter-rotation cutters in center
US11174683B2 (en) * 2019-02-25 2021-11-16 Century Products, Inc. Tapered joint for securing cone arm in hole opener

Also Published As

Publication number Publication date
GB306889A (en) 1930-01-16
NL27076C (enrdf_load_stackoverflow)
DE508080C (de) 1930-09-24
BE355760A (enrdf_load_stackoverflow)
FR664010A (fr) 1929-08-28

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