US1998793A - Roller bit - Google Patents

Roller bit Download PDF

Info

Publication number
US1998793A
US1998793A US661669A US66166933A US1998793A US 1998793 A US1998793 A US 1998793A US 661669 A US661669 A US 661669A US 66166933 A US66166933 A US 66166933A US 1998793 A US1998793 A US 1998793A
Authority
US
United States
Prior art keywords
head
cutters
roller
cutter
teeth
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
US661669A
Inventor
Thomas H Stancliff
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.)
Reed Roller Bit Co
Original Assignee
Reed Roller Bit Co
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
Application filed by Reed Roller Bit Co filed Critical Reed Roller Bit Co
Priority to US661669A priority Critical patent/US1998793A/en
Application granted granted Critical
Publication of US1998793A publication Critical patent/US1998793A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement

Definitions

  • the conventional cross roller bit includes a pair of side roller cutters mounted on opposite sides of the cutter recess in the bit head and rotatable on spindles that incline upwardly and outwardly from the longitudinal axis of the head; and a plurality of cross roller cutters between said side roller cutters and rotatable on a cross roller cutter pin disposed at substantially a right angle to the longitudinal axis of the head.
  • This invention provides a pair of spiral cutters to take the place of the straight tooth cutters heretofore used, to the end that a relatively small tooth area will be in contact with the formation momentarily to give a greater penetration speed, that the formation will be efficiently drilled by a scraping and shearing action, and that the teeth of the cutters will remain sharp for a greater length of time and will be self-cleaning in the formation.
  • Fig. 1 is a fragmentary sectional elevation of the bit
  • Fig. 2 a bottom plan view
  • Fig. 3 a reduced partly sectional elevation taken at a right angle to Fig. 1.
  • bit head In the drawing the bit head is indicated at I. It has in its lower end a cutter recess 2 defined by side roller cutter depending projections 3 and cross roller cutter depending projections 4. Within the cutter recess 2 is a bridge Shaving side roller cutter spindles 6 extending upwardly and outwardly in opposite directions andsupported by the bearing projections 3.
  • a cross roller cutter pin 1 Extending diametrically across the recess 2 and through the bridge 5 and having its ends supported by the projections 4 is a cross roller cutter pin 1.
  • Rotatable upon the spindles 6 are side roller cutters 8 having substantially straight helically disposed teeth.
  • Rotatable on the cross roller cutter pin 1 on opposite sides of the bridge 5 are a pair of cross roller cutters 9 and I0.
  • Each of the cross roller cutters 9 and I0 is in main body form substantially frusto-conical and has its base end outermost.
  • the cross roller cutters 9 and I0 have teeth 9a and Mia. disposed in rows in multiple spiral form upon the main body form, between which longitudinal grooves 9b and I 0b extend. In other words, the grooves intersect or cross the spiral rows at right angles thereto.
  • the teeth of the side roller cutters may be arranged so that the cutting edges thereof are parallel with the axis of rotation of said cutters rather than helically disposed as shown, and substantial changes may be made in the construction of the cross roller cutters 9 and I 0, all within the scope of the following claims:
  • a roller bit comprising a head; substantially cylindrical side roller cutters mounted on opposite sides of said head and rotatable on axes that are inclined upwardly and outwardly substantially from the longitudinal axis of said head; said side roller cutters having substantially straight helically disposed teeth; and a pair of multiple spiral frusto-conical cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis to traverse the area within the path of said side roller cutters; said cross roller cutters being arranged with their base ends outermost and having a plurality of grooves extending substantially from end to end between and at substantially a right angle to the teeth thereof disposed in rows in multiple spiral form.
  • a roller bit comprising a head; substantially cylindrical side roller cutters mounted on opposite sides of said head and rotatable on axes that are inclined upwardly and outwardly substantially from the longitudinal axis of said head; said side roller cutters having substantially straight helically disposed teeth; and a pair of multiple spiral frusto-conical cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis to traverse the area within the path of said side roller cutters; said cross roller cutters being arranged with their base ends outermost and having a plurality of grooves extending substantially from end to end between the teeth thereof disposed in rows in multiple spiral form.
  • a roller bit comprising a head; substantially cylindrical side roller cutters mounted on opposite sides of said head and rotatable on axes that are inclined upwardly and outwardly substantially from the longitudinal axis of said head; said side roller cutters having substantially straight teeth; and a pair of multiple spiral frusto-conical cross roller cutters between said side roller,cutters and rotatable on a substantially diametrical axis to traverse the area within the path of said side roller cutters; said cross roller cutters being arranged with their base ends outermost and having a plurality of grooves extending substantially from end to end between the teeth thereof disposed in rowsin multiple spiral form.
  • a roller bit comprising a head; substantially cylindrical side roller cutters mounted on opposite sides of said head and rotatable on axes that are inclined upwardly and outwardly substantially from the longitudinal axis of said head; said side roller cutters having substantially straight teeth; and a pair of multiple spiral cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis to traverse the-area within the path of said side roller cutters; said cross roller cutters having a plurality of grooves extending substantially from end to end between the teeth thereof disposed in rows in multiple spiral form.
  • a roller bit comprising a head; side roller cutters mounted on opposite sides of said head on spindles that project upwardly and outwardly substantially from the longitudinal axis of said head; and a pair of multiple spiral cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis; said cross roller cutters having a plurality of grooves extending substantially from end to end between the teeth thereof disposed in rows in multiple spiral form.
  • a roller bit comprising a head; side roller cutters mounted on opposite sides of said head on spindles that project upwardly and outwardly substantially from the longitudinal axis of said head; and a pair of multiple spiral cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis.
  • a roller bit comprising a head, and a pair of multiple spiral substantially frusto-conical cutters, supported by said head so as to be rotatable about a transverse axis, said cutters being arranged with their base ends outermost and having a plurality of grooves extending from end to end and between the teeth thereof disposed in rows in multiple spiral form.
  • a roller bit comprising a head, and a pair'of multiple spiral substantially frusto-conical cutters supported by said head so as to be rotatable about a transverse axis, said cutters being arranged with their base ends outermost.
  • a multiple spiral substantially frusto-conical roller cutter having straight grooves extending substantially from end to end between and at substantially a right angle to the teeth thereof disposed in rows in multiple spiral form.
  • a multiple spiral substantially frusto-conical roller cutter having straight grooves extending substantially from end to end between the teeth thereof disposed in rows in multiple spiral form.
  • a multiple spiral roller cutter having straight grooves extending substantially from efid to end between the teeth thereof disposed in rows in multiple spiral form.
  • Aroller bit comprising a head; said head having a cutter recess in the bottom thereof; a bridge extending across said recess and having. upwardly and outwardly projecting side roller cutter spindles supported by opposite sides of said head; a cross roller cutter pin extending substantially diametrically across said recess and through and at substantially a right angle to said bridge, and supported at its opposite ends by said head; a substantially cylindrical side roller cutter on each of said spindles; said sid roller cutters having substantially straight hel1- cally disposed teeth; and a substantially frustoconical multiple spiral cross roller cuttezi on said cross roller cutter .pin on each side of said bridge and extending substantially from said bridge *to the opposite surface of said recess with its base end outermost; said cross roller substantially cylindrical side roller cutter on each of said spindles; said side roller cutters having substantially straight helically disposed teeth; and a substantially frusto-conical multiple spiral cross roller cutter on said .cross roller cutter pin on each side of said bridge and
  • a roller bit comprising a head; said head having a cutter recess in the bottom thereof; a bridge extending across said recess andhaving upwardly and outwardly projecting side roller cutter spindles supportedby opposite sides of said head; a cross roller cutter pin extending substantially diametrically across said recess at substantially a right angle to said bridge, and
  • a roller bit comprising a head; said head having a cutter recess in the bottom thereof; a bridge extending across said recess and having upwardly and outwardly projecting side roller cutter spindles supported by opposite sides of said head; a cross roller cutter pin extending substantially diametrically across said recess at substantially a right angle to said bridge, and supported at its opposite ends ofsaid head; a substantially cylindrical side roller cutter on each of said spindles; said side roller cutters having substantially straight teeth; and a multiple spiral cross roller cutter on said cross roller cutter pin on each side of said bridge and extending subcutter spindles supported by opposite sides of.
  • a cross roller cutter pin extending subsubstantially diametrically across said recess at substantially a right angle to said bridge, and supported at its opposite ends by said head; a side roller cutter ,on each of said spindles; and a spiral cross roller cutter on said cross roller .cutter pin on each side of said bridge and extending substantially from said bridge to the op-' posite surface of said recess;

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)
  • Excavating Of Shafts Or Tunnels (AREA)

Description

April 23, 1935. H. STANCLIFF Thomas H. Sianclifl ROLLER BIT Fild March 20, 1933 IN VEN TOR.
ATTORNEY.
Patented Apr. 23, 1935 UNITED STATES PATENT OFFICE ROLLER BIT poration of Texas Application March 20,
16 Claims.
drill both hard and soft formations.
The conventional cross roller bit includes a pair of side roller cutters mounted on opposite sides of the cutter recess in the bit head and rotatable on spindles that incline upwardly and outwardly from the longitudinal axis of the head; and a plurality of cross roller cutters between said side roller cutters and rotatable on a cross roller cutter pin disposed at substantially a right angle to the longitudinal axis of the head. The
conventional cross roller cutters have thereon straight teeth and a plurality of themhave been placed on each side of the longitudinal axis of the head. 7
This invention provides a pair of spiral cutters to take the place of the straight tooth cutters heretofore used, to the end that a relatively small tooth area will be in contact with the formation momentarily to give a greater penetration speed, that the formation will be efficiently drilled by a scraping and shearing action, and that the teeth of the cutters will remain sharp for a greater length of time and will be self-cleaning in the formation.
Other objects will hereinafter appear.
The preferred embodiment of the invention is illustrated by the accompanying drawing, wherein Fig. 1 is a fragmentary sectional elevation of the bit; Fig. 2 a bottom plan view; and Fig. 3 a reduced partly sectional elevation taken at a right angle to Fig. 1.
In the drawing the bit head is indicated at I. It has in its lower end a cutter recess 2 defined by side roller cutter depending projections 3 and cross roller cutter depending projections 4. Within the cutter recess 2 is a bridge Shaving side roller cutter spindles 6 extending upwardly and outwardly in opposite directions andsupported by the bearing projections 3.
Extending diametrically across the recess 2 and through the bridge 5 and having its ends supported by the projections 4 is a cross roller cutter pin 1.
Rotatable upon the spindles 6 are side roller cutters 8 having substantially straight helically disposed teeth. Rotatable on the cross roller cutter pin 1 on opposite sides of the bridge 5 are a pair of cross roller cutters 9 and I0. Each of the cross roller cutters 9 and I0 is in main body form substantially frusto-conical and has its base end outermost. The cross roller cutters 9 and I0 have teeth 9a and Mia. disposed in rows in multiple spiral form upon the main body form, between which longitudinal grooves 9b and I 0b extend. In other words, the grooves intersect or cross the spiral rows at right angles thereto.
1933, Serial No. 661,669
The teeth of the side roller cutters may be arranged so that the cutting edges thereof are parallel with the axis of rotation of said cutters rather than helically disposed as shown, and substantial changes may be made in the construction of the cross roller cutters 9 and I 0, all within the scope of the following claims:
I claim:
1. A roller bit comprising a head; substantially cylindrical side roller cutters mounted on opposite sides of said head and rotatable on axes that are inclined upwardly and outwardly substantially from the longitudinal axis of said head; said side roller cutters having substantially straight helically disposed teeth; and a pair of multiple spiral frusto-conical cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis to traverse the area within the path of said side roller cutters; said cross roller cutters being arranged with their base ends outermost and having a plurality of grooves extending substantially from end to end between and at substantially a right angle to the teeth thereof disposed in rows in multiple spiral form.
2. A roller bit comprisinga head; substantially cylindrical side roller cutters mounted on opposite sides of said head and rotatable on axes that are inclined upwardly and outwardly substantially from the longitudinal axis of said head; said side roller cutters having substantially straight helically disposed teeth; and a pair of multiple spiral frusto-conical cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis to traverse the area within the path of said side roller cutters; said cross roller cutters being arranged with their base ends outermost and having a plurality of grooves extending substantially from end to end between the teeth thereof disposed in rows in multiple spiral form.
3. A roller bit comprising a head; substantially cylindrical side roller cutters mounted on opposite sides of said head and rotatable on axes that are inclined upwardly and outwardly substantially from the longitudinal axis of said head; said side roller cutters having substantially straight teeth; and a pair of multiple spiral frusto-conical cross roller cutters between said side roller,cutters and rotatable on a substantially diametrical axis to traverse the area within the path of said side roller cutters; said cross roller cutters being arranged with their base ends outermost and having a plurality of grooves extending substantially from end to end between the teeth thereof disposed in rowsin multiple spiral form.
4. A roller bit comprising a head; substantially cylindrical side roller cutters mounted on opposite sides of said head and rotatable on axes that are inclined upwardly and outwardly substantially from the longitudinal axis of said head; said side roller cutters having substantially straight teeth; and a pair of multiple spiral cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis to traverse the-area within the path of said side roller cutters; said cross roller cutters having a plurality of grooves extending substantially from end to end between the teeth thereof disposed in rows in multiple spiral form.
1 1 5. A roller bit comprising a head; side roller cutters mounted on opposite sides of said head on spindles that project upwardly and outwardly substantially from the longitudinal axis of said head; and a pair of multiple spiral cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis; said cross roller cutters having a plurality of grooves extending substantially from end to end between the teeth thereof disposed in rows in multiple spiral form.
6. A roller bit comprising a head; side roller cutters mounted on opposite sides of said head on spindles that project upwardly and outwardly substantially from the longitudinal axis of said head; and a pair of multiple spiral cross roller cutters between said side roller cutters and rotatable on a substantially diametrical axis.
7. A roller bit comprising a head, and a pair of multiple spiral substantially frusto-conical cutters, supported by said head so as to be rotatable about a transverse axis, said cutters being arranged with their base ends outermost and having a plurality of grooves extending from end to end and between the teeth thereof disposed in rows in multiple spiral form.
8. A roller bit comprising a head, and a pair'of multiple spiral substantially frusto-conical cutters supported by said head so as to be rotatable about a transverse axis, said cutters being arranged with their base ends outermost.
9. A multiple spiral substantially frusto-conical roller cutter having straight grooves extending substantially from end to end between and at substantially a right angle to the teeth thereof disposed in rows in multiple spiral form.
10. A multiple spiral substantially frusto-conical roller cutter having straight grooves extending substantially from end to end between the teeth thereof disposed in rows in multiple spiral form.
11. A multiple spiral roller cutter having straight grooves extending substantially from efid to end between the teeth thereof disposed in rows in multiple spiral form.
12. Aroller bit comprising a head; said head having a cutter recess in the bottom thereof; a bridge extending across said recess and having. upwardly and outwardly projecting side roller cutter spindles supported by opposite sides of said head; a cross roller cutter pin extending substantially diametrically across said recess and through and at substantially a right angle to said bridge, and supported at its opposite ends by said head; a substantially cylindrical side roller cutter on each of said spindles; said sid roller cutters having substantially straight hel1- cally disposed teeth; and a substantially frustoconical multiple spiral cross roller cuttezi on said cross roller cutter .pin on each side of said bridge and extending substantially from said bridge *to the opposite surface of said recess with its base end outermost; said cross roller substantially cylindrical side roller cutter on each of said spindles; said side roller cutters having substantially straight helically disposed teeth; and a substantially frusto-conical multiple spiral cross roller cutter on said .cross roller cutter pin on each side of said bridge and extending substantially from said bridge to the opposite surface of said recess with its base end outermost; said cross roller cutters having a plurality of grooves extending substantially from end to end between the teeth thereof disposed in rows in multiple spiral form.
14. A roller bit comprising a head; said head having a cutter recess in the bottom thereof; a bridge extending across said recess andhaving upwardly and outwardly projecting side roller cutter spindles supportedby opposite sides of said head; a cross roller cutter pin extending substantially diametrically across said recess at substantially a right angle to said bridge, and
supported at its opposite ends by said head; a
substantially cylindrical side roller cutter on each of said spindles; said side roller cutters having substantially straight teeth; and a substantially frusto-conical multiple spiral cross roller cutter on said cross roller cutter pin on each side of said bridge and extending substantially from said bridge to the opposite surface of said recess with its base end outermost.
15. A roller bit comprising a head; said head having a cutter recess in the bottom thereof; a bridge extending across said recess and having upwardly and outwardly projecting side roller cutter spindles supported by opposite sides of said head; a cross roller cutter pin extending substantially diametrically across said recess at substantially a right angle to said bridge, and supported at its opposite ends ofsaid head; a substantially cylindrical side roller cutter on each of said spindles; said side roller cutters having substantially straight teeth; and a multiple spiral cross roller cutter on said cross roller cutter pin on each side of said bridge and extending subcutter spindles supported by opposite sides of.
said head; a cross roller cutter pin extending subsubstantially diametrically across said recess at substantially a right angle to said bridge, and supported at its opposite ends by said head; a side roller cutter ,on each of said spindles; and a spiral cross roller cutter on said cross roller .cutter pin on each side of said bridge and extending substantially from said bridge to the op-' posite surface of said recess; 1
THOMAS H. STANCLIFE.
US661669A 1933-03-20 1933-03-20 Roller bit Expired - Lifetime US1998793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US661669A US1998793A (en) 1933-03-20 1933-03-20 Roller bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US661669A US1998793A (en) 1933-03-20 1933-03-20 Roller bit

Publications (1)

Publication Number Publication Date
US1998793A true US1998793A (en) 1935-04-23

Family

ID=24654590

Family Applications (1)

Application Number Title Priority Date Filing Date
US661669A Expired - Lifetime US1998793A (en) 1933-03-20 1933-03-20 Roller bit

Country Status (1)

Country Link
US (1) US1998793A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749093A (en) * 1952-09-12 1956-06-05 Reed Roller Bit Co Drill bit
US6827161B2 (en) 2000-08-16 2004-12-07 Smith International, Inc. Roller cone drill bit having non-axisymmetric cutting elements oriented to optimize drilling performance
US20050167162A1 (en) * 1996-04-10 2005-08-04 Smith International, Inc. Novel cutting element orientation or geometry for improved drill bits

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749093A (en) * 1952-09-12 1956-06-05 Reed Roller Bit Co Drill bit
US20050167162A1 (en) * 1996-04-10 2005-08-04 Smith International, Inc. Novel cutting element orientation or geometry for improved drill bits
US6988569B2 (en) 1996-04-10 2006-01-24 Smith International Cutting element orientation or geometry for improved drill bits
US6827161B2 (en) 2000-08-16 2004-12-07 Smith International, Inc. Roller cone drill bit having non-axisymmetric cutting elements oriented to optimize drilling performance

Similar Documents

Publication Publication Date Title
US2297157A (en) Drill
US3239431A (en) Rotary well bits
USRE19339E (en) Well reamer
US2177332A (en) Roller cutter organization for earth boring drills
US1998793A (en) Roller bit
US1885085A (en) Rock drill
US1703390A (en) Drill
US1905066A (en) Rolling drill cutter
US2192693A (en) Wash pipe
US1983316A (en) Three-cone bit
US1480014A (en) Self-cleaning roller drill
US1826059A (en) Drilling head
US2024730A (en) Roller core breaker for bits
US2742439A (en) Drill head or bit
US2340492A (en) Cutting teeth for well drills
US1809258A (en) Well reamer
US2399372A (en) Rotary cutting tool
US2038387A (en) Roller boring well drill
US1856627A (en) Cutter for earth boring drills
US2057026A (en) Drill bit
US1571348A (en) Drill bit
US2056498A (en) Reamer
US1621921A (en) Rotary-drill bit
US1660309A (en) Roller bit and reamer
US1899458A (en) Drill shank and bit