US20080029309A1 - Blade Assembly Especially for an Ice Auger or Like - Google Patents

Blade Assembly Especially for an Ice Auger or Like Download PDF

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Publication number
US20080029309A1
US20080029309A1 US10/593,447 US59344705A US2008029309A1 US 20080029309 A1 US20080029309 A1 US 20080029309A1 US 59344705 A US59344705 A US 59344705A US 2008029309 A1 US2008029309 A1 US 2008029309A1
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US
United States
Prior art keywords
bit
blade assembly
shank
assembly according
bit member
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.)
Abandoned
Application number
US10/593,447
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English (en)
Inventor
Markku Rosnell
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.)
KONSAKU Oy
Original Assignee
KONSAKU Oy
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 KONSAKU Oy filed Critical KONSAKU Oy
Assigned to KONSAKU OY reassignment KONSAKU OY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROSNELL, MARKKU
Publication of US20080029309A1 publication Critical patent/US20080029309A1/en
Abandoned legal-status Critical Current

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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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/008—Drilling ice or a formation covered by ice
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K97/00—Accessories for angling
    • A01K97/01—Accessories for angling for ice-fishing ; Ice drilling, hook-setting or signalling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/02—Apparatus for disintegrating, removing or harvesting ice
    • F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws

Definitions

  • the invention relates to a blade assembly, especially for an ice auger or the like, comprising a shank and a bit head.
  • the shank is provided at least with elements for mounting the bit head.
  • the bit head includes one or more disk-shaped bit members, which rotate during a drilling/boring operation and which have an outer rim thereof working as an actual cutting face in drilling/boring.
  • the ice auger consists of three components, i.e. an actual auger element, a crank at its top end, and a blade assembly at its bottom end, respectively.
  • Such traditional ice augers comprise generally a helical structure and the blade assembly used therein comprises bit members, which are mounted either fixedly or removably to the auger element, yet absolutely immobilized when in use.
  • the bit members used in this context are generally metal pieces of a parallelogram shape, having one of the long sides thereof beveled to serve as a blade or bit.
  • the blade assembly of an ice auger is generally provided with two of such bit members, which are inclined relative to the auger's centre axis. As a result of the inclination angle, the auger is focused at a single point on ice as boring is started.
  • the incidence angle is important in terms of what is called engaging capacity or “biting ability” of the auger.
  • the engaging capacity of a traditional fixed auger head including two bit members depends essentially on the acuteness of bit angles.
  • the inner edge in particular, is exposed to high stress and is highly susceptible to wearing and chipping in use. When this happens, the boring becomes unreasonably strenuous and, thus, the bits must be sharpened. Accordingly, in the event that an auger has been left lying on the ice, there is always a risk of a person's foot hitting the exposed blade as the outer edges of a traditional auger bit are particularly hazardous. In practice, another hazardous operation is the placement of a blade cover.
  • the blade or bit head of a traditional ice auger requires constant adjustment as the composition of ice varies e.g. along with air temperature; an excessively engaging edge, effective in terms of cutting dry and hard ice, becomes stuck in sloshy soft ice. The only way of adjusting such a traditional fixedly secured bit is by grinding its beveled edge.
  • a blade assembly of the invention is principally characterized in that the rotating bit member included in the bit head is disposed at an angle of less than 45° relative to a drilled surface.
  • the inventive blade assembly which comprises a bit member circular in shape and rotating in a drilling process, as well as disposed at a suitably low angle relative to a drilled surface, makes a smooth contact with the ice to be bored, as just a small portion thereof is parallel to the radius of a bored hole. By virtue of this, boring is quite effortless and the bit does not get jammed in ice. On the other hand, the bit member included in a blade assembly of the invention rotates steadily in use, nor does it develop chipped edges or the like defects.
  • the inventive blade assembly is highly adaptable to mass production, including even automated production. Another major benefit gained by the inventive blade assembly lies in the fact that the incidence angle of a bit member can be adjusted e.g. by tightening or loosening attachment of the bit or by having it mounted on the blade assembly's shank preferably in a flexible manner.
  • FIG. 1 shows a traditional auger bit member (t), provided with a beveled edge (v) and an attachment hole (R),
  • FIG. 2 shows a pair of traditional bit members for an ice auger in operative position seen from above
  • FIG. 3 shows both a section at 1 - 1 in FIG. 2 , depicting an inclination angle formed by each bit member, and a section at 2 - 2 in FIG. 2 , depicting a cutting/incidence angle formed by each bit member,
  • FIG. 4 shows a bit member included in a blade assembly of the invention, in a plan view and in a side view
  • FIG. 5 shows a pair of bit members included in a blade assembly of the invention, in a plan view, as well as in side views depicting an inclination angle and a cutting/incidence angle,
  • FIG. 6 shows a blade assembly of the invention, having bit members coupled by a cotter pin, a fastening screw and nut to a shank of the blade assembly,
  • FIG. 7 shows a side view of a blade assembly alternative to FIG. 6 , having each bit member coupled by a separate connecting member to substantially horizontally extending arm elements of the shank,
  • FIG. 8 shows an integrally built body element included in the shank of a blade assembly of the invention, in a plan view, a front view, and a side view,
  • FIG. 9 shows a bit member alternative to FIG. 4 , in views depicting especially one preferred way of manufacturing the same, and
  • FIG. 10 shows an embodiment alternative to the blade assembly of FIGS. 6 and 7 , comprising a single rotary bit member.
  • the invention relates a blade assembly, especially for an ice auger or the like, comprising a shank 1 and a bit head 2 .
  • the shank 1 is provided at least with elements 3 for mounting the bit head 2 .
  • the bit head 2 includes one or more disk-shaped bit members 2 a , which rotate w during a drilling/boring operation and which have an outer rim 2 a ′ thereof working as an actual cutting face in drilling/boring.
  • the rotary bit member 2 a included in the bit head is disposed, as depicted e.g. in FIG. 5 , at an angle of less than 45° relative to a drilled surface A.
  • the blade assembly's shank 1 comprises preferably a structure, which projects in two or more directions and which has the bit members 2 a included in the bit head 2 mounted on its arm elements in a dismountable fashion, such as by using a screw connection or the like.
  • Arm elements 1 a projecting laterally from the shank 1 in a substantially horizontal plane, are shaped, as depicted e.g. in FIGS. 6 , 7 and 8 , such that the angle a of each bit member 2 a , such as its inclination angle a 1 , incidence/cutting angle a 2 and/or the like, lies within the range of 5-30° relative to the drilled surface A.
  • FIG. 10 illustrates a solution alternative with respect to what is described above, comprising just one rotary bit member 2 a which is mounted on the arm element 1 a projecting from the shank 1 .
  • the alignment of a blade assembly and the drilling of a pilot hole are performed by means of a central drill CD present at an end of the shank element 1 .
  • the rotary bit member 2 a is provided with angular settings as described above, yet having its inclination in the opposite direction so as to perform its drilling action by the outer edge of the rotary bit member 2 a as opposed to performing it with the inner edge of the rotary bit member 2 a , as in the solutions of FIGS. 6 and 7 .
  • a pilot hole is drilled by the twist bit CD used as a central drill and the outer rim for a hole to be bored/drilled is in turn drilled by the rotary bit member 2 a .
  • a solution like this enables a very neat drilling result.
  • it is highly suitable for a motor-driven auger as it can be used for making holes side by side quite close to each other, the central drill CD being effective in blocking lateral slipping.
  • bit members 2 a included in the bit head 2 are provided with means 4 for enhancing the drilling action, such as a corrugation, a serration and/or the like, present on its cutting face 2 a ′, as depicted e.g. in FIG. 9 .
  • each bit member 2 a included in the bit head is made of tempered steel, at least in its cutting face 2 a′.
  • the bit member 2 a included in the bit head 2 has an inclination angle a; a 1 preferably of 14.5° and/or respectively an incidence/cutting angle a; a 2 preferably of 15°.
  • the blade assembly has its shank 1 provided with means 5 for adjusting the distance of one or more bit members 2 a with respect to a centre axis k of the shank 1 .
  • the bit members have an adjusting range which is preferably about 25 mm, whereby an auger of e.g. 110 mm has a maximum capacity of making 135 mm holes.
  • the above-mentioned means 5 are established by means of elongated attachment holes 3 a present in a shank element 1 ; 1 a ′′, included in the shank and comprising two integrally built arm elements.
  • one or more bit members 2 a included in the bit head 2 are adapted to have a flexible attachment to the shank 1 , specifically for enabling self-adjustment of its cutting angle a; a 2 .
  • the arrangement like this is feasible by providing the bit members 2 a with a recess, in which a fastening screw, for example of the cap bolt type, is countersinkable by fitting e.g. a spring washer between its head and the bottom of the recess included in the bit member.
  • the bit member 2 a included in the bit head 2 is feasible to manufacture in 1.5-3.5 mm gauge sheet steel, which is formed with the cutting face 2 a ′ and/or the means 4 for enhanced drilling by die cutting or the like manner and in which a bevel for the bit member's cutting face 2 a ′ is surface ground to an angle c preferably of about 25°.
  • bit member in the principle shown e.g. in FIG. 9 , such that the sheet metal is first cut for a circular bit panel 2 a 1 , which is then punched for the edge serration 4 , the central hole R, as well as an edge bevel X. This is followed by surface grinding a bit member panel 2 a 0 over its bottom surface for providing a bit member 2 a with a sharp cutting edge 2 a′.
  • the invention is not limited to the embodiments illustrated or described above, but a multitude of most diverse variations can be made therein within the scope of the basic inventive concept.
  • the shank element which is an integral part of the blade assembly, is feasible for being manufactured from the most diverse of materials by applying the most diverse of manufacturing techniques.
  • the number of arm elements included therein can be more than presented above, which are nevertheless preferably arranged symmetrically due to the intended application.
  • the embodiment with a single rotary bit member, as described above as an option can also be naturally implemented so as to include several arm elements.
  • bit member rotatably to a shank element can also be implemented in a plurality of ways, whereby the bit member can have e.g. its central area made thicker than the rest of it, which enables the head of a coupling-effecting cap bolt or fastening stud to be countersunk completely therein. It is further possible to make the bit member e.g. disposable by using sheet metal therefor, whereby it requires no sharpening in use, being always readily replaceable with a new one.
  • bit members can be accomplished by flexible or other attachments enabling a slight tilting movement for the bit member.
  • arrangement used for the distance of bit members can also be implemented, instead of an elongated hole, e.g. by means of a string of holes.
US10/593,447 2004-03-19 2005-03-18 Blade Assembly Especially for an Ice Auger or Like Abandoned US20080029309A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20040425A FI20040425A0 (fi) 2004-03-19 2004-03-19 Jääkairan teräasetelma
FI20040425 2004-03-19
PCT/FI2005/000158 WO2005090876A1 (en) 2004-03-19 2005-03-18 Blade assembly especially for an ice auger or like

Publications (1)

Publication Number Publication Date
US20080029309A1 true US20080029309A1 (en) 2008-02-07

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US10/593,447 Abandoned US20080029309A1 (en) 2004-03-19 2005-03-18 Blade Assembly Especially for an Ice Auger or Like

Country Status (4)

Country Link
US (1) US20080029309A1 (fi)
CA (1) CA2554294A1 (fi)
FI (1) FI20040425A0 (fi)
WO (1) WO2005090876A1 (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180333719A1 (en) * 2013-12-06 2018-11-22 Bacterioscan Ltd Cuvette Assembly Having Chambers For Containing Samples To Be Evaluated Through Optical Measurement
USD848496S1 (en) * 2016-09-28 2019-05-14 Sumitomo Electric Hardmetal Corp. Cutting tool
USD909437S1 (en) * 2018-02-16 2021-02-02 Sumitomo Electric Hardmetal Corp. Cutting tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2007239126A1 (en) * 2006-04-19 2007-10-25 Drill Tech Limited Cutting, drilling or grinding apparatus and method
RU2508619C1 (ru) * 2012-11-14 2014-03-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежская государственная лесотехническая академия" Универсальное почвообрабатывающее орудие

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US893950A (en) * 1908-03-17 1908-07-21 William H C Jaques Mining-tool.
US1402684A (en) * 1922-01-03 And one-foubth to clatjb w
US1438876A (en) * 1919-09-30 1922-12-12 E C Coffey Oil-well drill bit
US1719546A (en) * 1926-05-24 1929-07-02 Hallett Thomas Squire Auger
US1990341A (en) * 1932-03-01 1935-02-05 Judith L Meyer Boring tool
US2329388A (en) * 1941-05-12 1943-09-14 Hugh S Brown Earth auger
US2713993A (en) * 1951-04-09 1955-07-26 Central Mine Equipment Company Mining bits
US3093199A (en) * 1961-09-01 1963-06-11 Howard J Premo Ice auger
US5950738A (en) * 1997-12-04 1999-09-14 Outdoor Creations, Inc. Inverted cone cutter attachment for ice auger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1402684A (en) * 1922-01-03 And one-foubth to clatjb w
US893950A (en) * 1908-03-17 1908-07-21 William H C Jaques Mining-tool.
US1438876A (en) * 1919-09-30 1922-12-12 E C Coffey Oil-well drill bit
US1719546A (en) * 1926-05-24 1929-07-02 Hallett Thomas Squire Auger
US1990341A (en) * 1932-03-01 1935-02-05 Judith L Meyer Boring tool
US2329388A (en) * 1941-05-12 1943-09-14 Hugh S Brown Earth auger
US2713993A (en) * 1951-04-09 1955-07-26 Central Mine Equipment Company Mining bits
US3093199A (en) * 1961-09-01 1963-06-11 Howard J Premo Ice auger
US5950738A (en) * 1997-12-04 1999-09-14 Outdoor Creations, Inc. Inverted cone cutter attachment for ice auger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180333719A1 (en) * 2013-12-06 2018-11-22 Bacterioscan Ltd Cuvette Assembly Having Chambers For Containing Samples To Be Evaluated Through Optical Measurement
USD848496S1 (en) * 2016-09-28 2019-05-14 Sumitomo Electric Hardmetal Corp. Cutting tool
USD909437S1 (en) * 2018-02-16 2021-02-02 Sumitomo Electric Hardmetal Corp. Cutting tool

Also Published As

Publication number Publication date
FI20040425A0 (fi) 2004-03-19
WO2005090876A1 (en) 2005-09-29
CA2554294A1 (en) 2005-09-29

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KONSAKU OY, FINLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ROSNELL, MARKKU;REEL/FRAME:018341/0036

Effective date: 20060728

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION