US1974540A - Drill - Google Patents

Drill Download PDF

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Publication number
US1974540A
US1974540A US706455A US70645534A US1974540A US 1974540 A US1974540 A US 1974540A US 706455 A US706455 A US 706455A US 70645534 A US70645534 A US 70645534A US 1974540 A US1974540 A US 1974540A
Authority
US
United States
Prior art keywords
shank
bit
socket
drill
orifice
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
US706455A
Other languages
English (en)
Inventor
Norley Harry Charles
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.)
Atlas Steels Ltd
Original Assignee
Atlas Steels Ltd
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 Atlas Steels Ltd filed Critical Atlas Steels Ltd
Priority to US706455A priority Critical patent/US1974540A/en
Priority to GB26612/34A priority patent/GB426470A/en
Priority to FR45541D priority patent/FR45541E/fr
Application granted granted Critical
Publication of US1974540A publication Critical patent/US1974540A/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches

Definitions

  • My invention relates to improvements in drills, particularly intended for use in rock drilling and of the detachable bit type, and the object of the invention is to devise a drill in which the bit can be readily and quickly attached to and detached from the shank without the necessity of employing other than the ordinary tools usually at the hand of the miner.
  • a further object is to construct such a drill in which the connection between the bit and the shank will be a rigid and positive one and there will be no liability of the bit becoming inadvertently detached and being left in the hole bored when withdrawing the drill therefrom.
  • a still further object is to devise a detachable connection between bit and shank characterized by there being no slackness or play between these two parts so that rotative movement imparted to the shank will be positively transmitted to the connected bit.
  • Fig. 2 is a similar view taken at right angles to Fig. 1, the bit being shown in section.
  • Fig. 3 is a plan view of the bit.
  • Fig. 4 is an inverted plan view of the bit engaging end of the shank.
  • Fig. 5 is a side view of the shank, showing it in the initial position it assumes in connecting it to the bit, the latter being shown in section, and
  • Fig. 6 is a side view of the drill showing the shank and bit in the connected position, the bit being illust ated in section.
  • My shank 1 preferably comprises a bit engaging end 2 tapering towards its extremity, the crosssection of the tapered end being of generally elliptical form with two opposed fiat surfaces (clearly illustrated in Fig. 4).
  • My detachable bit 5 with cutters 6 is provided with a shank receiving socket 7 extending down from its top, said socket wall being substantially correspondingly tapered to the taper of the bit engaging end of the shank and of such dimensions that when the shank end is fully received into the socket it will be a driving fit therein.
  • a lateral orifice 8 extends from the outer periphery of the bit through the wall of the socket 7 and is adapted to receive the projection 3 when the shank end is inserted into the socket, and the orifice 8 is preferably of greater height than the height of the projection so as to permit vertical movement of the projection therein when the shank is driven down into the socket.
  • This orifice may well be circular and the cross-section of the projection elliptical (see Fig. 2).
  • a similar orifice 9 is provided through the wall of the socket 7 diametrically opposite the orifice 8 and both may conceivably be of the same size as would occur if the bit were drilled transversely.
  • Such orifice 9 is adapted to receive the protuberance 4 and is of such size relatively thereto that the latter will be permitted a certain amount of longitudinal movement therein in driving home the shank into the socket.
  • the lip of the socket 7 may be rounded as illustrated to facilitate the insertion of the shank as hereinafter described.
  • the combination with a shank portion and a detachable bit portion, of a nonrotative connection between the two portions comprising a tongue on one portion inserted into a socket in the other portion, said tongue and socket coacting with each other and so formed that relative rotative movement therebetween is prevented, a lateral projection on the tongue insertable into an orifice in the socket wall, said tongue portion being initiallyapplied to the socket portion with their longitudinal axes at an angle toeach other and the lateral projection partially engaged in the orifice and such tongue portion being then swung relatively to the socket portion until the longitudinal axes of the por-' tions are coincident wherein the lateral projection fully enters the orifice and constitutes means for preventing displacement of the bit portion from the shank portion.
  • the combination with a shank portion and a detachable bit portion, of a nonrotative connection between the two portions comprising a tongue on the shank portion inserted into a socket in the detachable bit portion, said tongue and socket coacting witheach other and so formed that relative rotative movement therebetween is prevented, a lateral projection on the shank adapted to be partially inserted into an orifice in the socket wall upon the shank being applied to the bit portion with its longitudinal axis at an angle to the longitudinal axis thereof, and 'said lateral projection fully entering the orifice upon-the shank being swung so that "its longitudinal axis is coincident with the longitudinal axis'of' the bit.
  • socket wall has an additional orifice therein, and a protuberance on 'the shank adapted to enter said orifice upon the shank and bit portions being applied to each other with their longitudinal axes coincident, said projection and said 'pro tuberance on the shank being diametrically op- 126 posed to each other and-the two orifices in the wall of the socket being diametrically opposed to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Drilling Tools (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Scissors And Nippers (AREA)
US706455A 1934-01-13 1934-01-13 Drill Expired - Lifetime US1974540A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US706455A US1974540A (en) 1934-01-13 1934-01-13 Drill
GB26612/34A GB426470A (en) 1934-01-13 1934-09-17 Improvements in and relating to drills
FR45541D FR45541E (fr) 1934-01-13 1934-09-19 Foret à mèche amovible

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US706455A US1974540A (en) 1934-01-13 1934-01-13 Drill
GB26612/34A GB426470A (en) 1934-01-13 1934-09-17 Improvements in and relating to drills
FR45541T 1934-09-19

Publications (1)

Publication Number Publication Date
US1974540A true US1974540A (en) 1934-09-25

Family

ID=8681271

Family Applications (1)

Application Number Title Priority Date Filing Date
US706455A Expired - Lifetime US1974540A (en) 1934-01-13 1934-01-13 Drill

Country Status (3)

Country Link
US (1) US1974540A (fr)
FR (1) FR45541E (fr)
GB (1) GB426470A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848478A (en) * 1973-09-12 1974-11-19 Gen Motors Corp Shift lever bowl assembly
US20100196089A1 (en) * 2007-04-05 2010-08-05 Tracto-Technik Gmbh & Co. Kg Rod coupling having a pin

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848478A (en) * 1973-09-12 1974-11-19 Gen Motors Corp Shift lever bowl assembly
US20100196089A1 (en) * 2007-04-05 2010-08-05 Tracto-Technik Gmbh & Co. Kg Rod coupling having a pin
US8336644B2 (en) * 2007-04-05 2012-12-25 Tracto-Technik Gmbh & Co. Kg Rod coupling having a pin

Also Published As

Publication number Publication date
FR45541E (fr) 1935-09-12
GB426470A (en) 1935-04-03

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