US1972298A - Roller bit - Google Patents

Roller bit Download PDF

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Publication number
US1972298A
US1972298A US597316A US59731632A US1972298A US 1972298 A US1972298 A US 1972298A US 597316 A US597316 A US 597316A US 59731632 A US59731632 A US 59731632A US 1972298 A US1972298 A US 1972298A
Authority
US
United States
Prior art keywords
pins
roller bit
post
cutters
support
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
US597316A
Inventor
George G Harrington
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 US597316A priority Critical patent/US1972298A/en
Application granted granted Critical
Publication of US1972298A publication Critical patent/US1972298A/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
    • E21B10/10—Roller bits with roller axle supported at both ends

Definitions

  • a drill bit having a central post opening and three depending bearing projections at substantially equal distances apart, each of said projections having a downwardly opening slot; a cutter support having a post in said post opening, and three cutter pins projecting upwardly and outwardly into said slots; roller cutters on said pins; said support and cutters being slidable into said head as a unit; and means to hold' said post in said opening.
  • a drill bit head having three depending bearing projections at substantially equal distances apart, each of said projections having a downwardly opening slot; a cutter support having three cutter pins projecting upwardly and outwardly into said slots; roller cutters on said pins; said support and cutters being slidable into said head as a unit; and means to hold said support in said head.

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  • 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

I Sept. 4, 193 G. G. HARRINGTON ROLLER BIT I Filed March 7, 1932 2 Sheets-Sheet l wk Qvmm a I rill I ("eorqe G Harrington INVENTOR Y flmmha ATTORNEY p 4, 1934- G. G. IHARRINGTCI N 1,972,298
' ROLLER BIT Filed March 7, 1932 2 Sheets-sheaf; 2
' Geqrye GHarr-ingion INVENTOR ATTORNEY the other of said pins; substantially cylindrical cutters on said two pins projecting outwardly projections having a downwardly opening slot and a bolt opening extending upwardly from said slot; a cutter support having a post in said post opening, and three cutter pins projecting upwardly and outwardly into said slots; bolts connected to the ends of said pins and extending upwardly into said bolt openings; roller cutters on said pins; said support, cutters and bolts being slidable into said head as a unit; and means to hold said post and bolts in said openings.
6. A drill bit having a central post opening and three depending bearing projections at substantially equal distances apart, each of said projections having a downwardly opening slot; a cutter support having a post in said post opening, and three cutter pins projecting upwardly and outwardly into said slots; roller cutters on said pins; said support and cutters being slidable into said head as a unit; and means to hold' said post in said opening.
7. A drill bit head having three depending bearing projections at substantially equal distances apart, each of said projections having a downwardly opening slot; a cutter support having three cutter pins projecting upwardly and outwardly into said slots; roller cutters on said pins; said support and cutters being slidable into said head as a unit; and means to hold said support in said head.
US597316A 1932-03-07 1932-03-07 Roller bit Expired - Lifetime US1972298A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US597316A US1972298A (en) 1932-03-07 1932-03-07 Roller bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US597316A US1972298A (en) 1932-03-07 1932-03-07 Roller bit

Publications (1)

Publication Number Publication Date
US1972298A true US1972298A (en) 1934-09-04

Family

ID=24391004

Family Applications (1)

Application Number Title Priority Date Filing Date
US597316A Expired - Lifetime US1972298A (en) 1932-03-07 1932-03-07 Roller bit

Country Status (1)

Country Link
US (1) US1972298A (en)

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