US1459366A - Expanding auger - Google Patents
Expanding auger Download PDFInfo
- Publication number
- US1459366A US1459366A US497252A US49725221A US1459366A US 1459366 A US1459366 A US 1459366A US 497252 A US497252 A US 497252A US 49725221 A US49725221 A US 49725221A US 1459366 A US1459366 A US 1459366A
- Authority
- US
- United States
- Prior art keywords
- spindle
- cutting element
- holder
- tongue
- bearing
- 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
Links
- 239000000463 material Substances 0.000 description 6
- 238000005553 drilling Methods 0.000 description 2
- 239000004160 Ammonium persulphate Substances 0.000 description 1
- 206010002368 Anger Diseases 0.000 description 1
- 241001647745 Banksia Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/0018—Drills for enlarging a hole
- B23B51/0045—Drills for enlarging a hole by expanding or tilting the toolhead
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/12—Radially moving rotating tool inside bore
- Y10T82/125—Tool simultaneously moving axially
- Y10T82/128—Pivoted to tool-carrier
Definitions
- AMOS sosrna or BaNKsIe, NEAR.
- SYDNEY NEW SOUTH vvALns, AUSTRALIA, AS-
- This invention relates to an improved selfcontained tool for boring-an undercut or reverse taper hole in woodor the like in one operation. More particularly it has ref- .erence to a tool having a cutting element adapted to incline outwardly as it enters the material. being bored, with provision for counter-sinking around the smallest diameter of the hole formed.
- a feature of the invention resides in provision for the work being fed to the tool and, further, in causing the cutting element to be de-aligned from the vertical to an inclined plane in synchronism with and under the pressure exerted by the progressive feeding travel of the work, and, still further, in returning the operative elements of the tool to their initial positions as and when the work is withdrawn after boring and countersinking hav been completed.
- Figure 2 is a cross-sectional plan taken on line A.A Figure 1.
- Fig. 3 is a cross-sectional View on line BB of Fig. 1.
- a tool according to the invention comprises a spindle 2 having a tapered upper end 3 terminating in a lug 4- by which attachment to a drilling machine or the like is effected.
- the spindle is provided with a slot-way 5 wherein is mounted a pivot pin 6 to support the boss 7 of a cutter control member or tongue 8 accommodated in the slot-way of said spindle.
- the tongue 8 normally projccts beyond the edge of the spindle 2 under the influence of a coiled spring 9, the outer end of which bears in a recess 10 formed in the upper end of the tongue.
- the inner end of the spring 9 bears in a recess 11 formed in the spindle and in comn'iunication' withthe slotway thereof. Threaded into or otherwise secured to the lower end of the tongue 8 is the upper end of a cutting element or bit 12.
- the tongue 8 is an inclined hole or slot accommodating a removable counter-sink 13;
- the countersink may be tapered and retained by a driving iit or it may b otherwise secured
- Bearing against the upper ball bearing 15 is an upper inverted cup 16 into which projects the upper end of a compression spring 17 encircling the spindle2.
- the lower end of the spring 17 is accommodated in a lower cup 18 resting upon an externally threaded nut 19 adapted to retain a lower ball bearing 20 within a holder 21.
- the bearing 20 encircles the lower end of the spindle 2 and normally rests upon limit stops 22 carried by the said spindle.
- the holder 21 is constructed with a central hole 23 and is provided with holding pins or spikes 24 adapted to enter the material to be bored.
- the spindle 2 is secured by the lug 4 to a. drilling machine or the like and rotated thereby, the material to be bored being disposed below the holder 21 and fed towards the cutting element 12 by any known or suitable means.
- the pins or spikes 24 enter the material and prevent it from rotating under the influence of the rotating cutting element 12.
- the holder 21 and ball bearing 20 and nut 19 move along the spindle 2, the tongue 8 being forced inwardly against the pressure of the spring 9 by contact with the encircling hearing 20.
- the spring 17 is compressed when the work is fed to the cutting element 12 and the holder 21 and its appurtenances are ol viously returned to their initial position under its influence as the work is withdrawn.
- the spring 9 then'itorces the upper end of the tongue 8 outwardly, thereby returning the cutting element 12 into vertical alignment with the soindle 2. Should it be de sired to form reverse tapered holes without a counter-sunk narrow end the counter-sink 15') is removed and the apparatus functions as alread described.
- LA tool for boring reverse taper holes comprising a spindle, a'pivoted cutter control member carried by the spindle, a cutting element carried by the member, awork holder slidably mounted in relation tov the spindle, a bearing in the holder including a member through which the spindle and control member extend and arranged for actuating the control member and hence the cutter, a second bearing for the spindle, and a spring between the bearings for returning I the holder to initial position upon completion of boring, and for also returning the control member and the cutter to initial po-- the spindle and bearing againstthe tongue,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Description
June 39, E923. 3,459,36fi
A. GOSPER EXPANDING AUGER Filed Aug. 31 1921 Patented June 19, 1923.
' sire stars I 1,4595% rarest" or ice.
AMOS sosrna, or BaNKsIe, NEAR. SYDNEY, NEW SOUTH vvALns, AUSTRALIA, AS-
SIGNOR TO HENRY PETRIE FLETGHEB, OF SYDNEY, NEW SOUTH WALES, AUS- Til-ALIA.
' EXPANDING Ans-En.
Application filed August 31. 1921. serial 310. 497,252.
To aZZ who/2t it may] concern:
Be it known that 1, Amos Gosrnn, a subject of the King of Great Britain, residing at Banksia, near Sydney, in the State of New South Wales, Commonwealth of Australia, have invented new and useful Improvements in Expanding Angers of which thefollou ing is aspecification This invention relates to an improved selfcontained tool for boring-an undercut or reverse taper hole in woodor the like in one operation. More particularly it has ref- .erence to a tool having a cutting element adapted to incline outwardly as it enters the material. being bored, with provision for counter-sinking around the smallest diameter of the hole formed.
A feature of the invention resides in provision for the work being fed to the tool and, further, in causing the cutting element to be de-aligned from the vertical to an inclined plane in synchronism with and under the pressure exerted by the progressive feeding travel of the work, and, still further, in returning the operative elements of the tool to their initial positions as and when the work is withdrawn after boring and countersinking hav been completed.
With these and other objects in view,
the invention consists of the features of construction, combination and arrangement hereinafter fully described reference being had to the accompanyingdrawings where- Figure 1 is a part sectional elevation of the invention.
Figure 2 is a cross-sectional plan taken on line A.A Figure 1.
Fig. 3 is a cross-sectional View on line BB of Fig. 1.
A tool according to the invention comprises a spindle 2 having a tapered upper end 3 terminating in a lug 4- by which attachment to a drilling machine or the like is effected.
The spindle is provided with a slot-way 5 wherein is mounted a pivot pin 6 to support the boss 7 of a cutter control member or tongue 8 accommodated in the slot-way of said spindle. The tongue 8 normally projccts beyond the edge of the spindle 2 under the influence of a coiled spring 9, the outer end of which bears in a recess 10 formed in the upper end of the tongue. The inner end of the spring 9 bears in a recess 11 formed in the spindle and in comn'iunication' withthe slotway thereof. Threaded into or otherwise secured to the lower end of the tongue 8 is the upper end of a cutting element or bit 12. V
Formed in the lower nd-o1. the tongue 8 is an inclined hole or slot accommodating a removable counter-sink 13; The countersink may be tapered and retained by a driving iit or it may b otherwise secured Threaded upon the spindle 2, below the tapered portion 3 thereof, is anut 141 adapted to retain an upper ball bearing 15; Bearing against the upper ball bearing 15 is an upper inverted cup 16 into which projects the upper end of a compression spring 17 encircling the spindle2. The lower end of the spring 17 is accommodated in a lower cup 18 resting upon an externally threaded nut 19 adapted to retain a lower ball bearing 20 within a holder 21. The bearing 20 encircles the lower end of the spindle 2 and normally rests upon limit stops 22 carried by the said spindle.
The holder 21 is constructed with a central hole 23 and is provided with holding pins or spikes 24 adapted to enter the material to be bored.
In use, the spindle 2 is secured by the lug 4 to a. drilling machine or the like and rotated thereby, the material to be bored being disposed below the holder 21 and fed towards the cutting element 12 by any known or suitable means. The pins or spikes 24 enter the material and prevent it from rotating under the influence of the rotating cutting element 12. As the material or work advances towards the cutting element 12 the holder 21 and ball bearing 20 and nut 19 move along the spindle 2, the tongue 8 being forced inwardly against the pressure of the spring 9 by contact with the encircling hearing 20.
It will be obvious that as the upper end of the tongue 8 moves into the slotway indicated at 5 the cutting element 12 carried by the lower end of the tongue 8 moves outwardly and is inclined to the axis of the spindle 2. A hole is thus cut by the rotating cutting element 12, which is larger at the inner or lower end than at the point of entry. Upon the work being fed a pre-determined distance in relation to the cutting element 12 the counter-sink 13 engages the material and by enlarging the narrow end of the hole out forms a counter-sunk recess simultaneouslywith the completion of the hole by the cutting element 12.
The spring 17 is compressed when the work is fed to the cutting element 12 and the holder 21 and its appurtenances are ol viously returned to their initial position under its influence as the work is withdrawn. The spring 9 then'itorces the upper end of the tongue 8 outwardly, thereby returning the cutting element 12 into vertical alignment with the soindle 2. Should it be de sired to form reverse tapered holes without a counter-sunk narrow end the counter-sink 15') is removed and the apparatus functions as alread described. I
hat I do claim is LA tool for boring reverse taper holes comprising a spindle, a'pivoted cutter control member carried by the spindle, a cutting element carried by the member, awork holder slidably mounted in relation tov the spindle, a bearing in the holder including a member through which the spindle and control member extend and arranged for actuating the control member and hence the cutter, a second bearing for the spindle, and a spring between the bearings for returning I the holder to initial position upon completion of boring, and for also returning the control member and the cutter to initial po-- the spindle and bearing againstthe tongue,
at work holder carrying the bearing, a plurality of pins carried by the holder, and a, the spindle and coiled spring encircling bearing upon the holder.
In testimony whereof I aflix my signature in presence of a witness. 1 I
AMOS GOSPER, lVitness:
7. J. CREAGH.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US497252A US1459366A (en) | 1921-08-31 | 1921-08-31 | Expanding auger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US497252A US1459366A (en) | 1921-08-31 | 1921-08-31 | Expanding auger |
Publications (1)
Publication Number | Publication Date |
---|---|
US1459366A true US1459366A (en) | 1923-06-19 |
Family
ID=23976070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US497252A Expired - Lifetime US1459366A (en) | 1921-08-31 | 1921-08-31 | Expanding auger |
Country Status (1)
Country | Link |
---|---|
US (1) | US1459366A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2594671A (en) * | 1948-01-27 | 1952-04-29 | Mctyre Henry | Internal reverse taper reamer |
EP0641616A1 (en) * | 1993-09-06 | 1995-03-08 | Fischerwerke Arthur Fischer GmbH & Co. KG | Drilling device for making undercuttings in holes |
-
1921
- 1921-08-31 US US497252A patent/US1459366A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2594671A (en) * | 1948-01-27 | 1952-04-29 | Mctyre Henry | Internal reverse taper reamer |
EP0641616A1 (en) * | 1993-09-06 | 1995-03-08 | Fischerwerke Arthur Fischer GmbH & Co. KG | Drilling device for making undercuttings in holes |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2296087A (en) | Rivet cutter | |
US1365660A (en) | Bit and like boring-tool | |
US2620689A (en) | Deburring tool having a slender body for projecting into an aperture | |
US2710549A (en) | Micro-limit countersink driver | |
US1459366A (en) | Expanding auger | |
US1536208A (en) | Expansible boring tool | |
US864756A (en) | Drill. | |
US2390744A (en) | Drilling and countersinking tool | |
US3302495A (en) | Countersink | |
US2216988A (en) | Depth stop for countersinking, boring, drilling, and similar devices | |
US2226226A (en) | Counterboring tool | |
GB518688A (en) | Improvements in or relating to a boring tool, particularly for boring taper holes | |
US1644074A (en) | Electric screw-driving guide | |
US2863340A (en) | Combination pilot and countersink drill | |
US1354848A (en) | Radius-cutter for metals | |
US4165200A (en) | Drilling and deburring apparatus | |
US1362529A (en) | Countersinking-tool | |
US1503836A (en) | Deep-drilling machine | |
US2585038A (en) | Tool | |
USRE25860E (en) | Adjustable boring tool | |
US752724A (en) | Reamer | |
US578805A (en) | Thomas h | |
US2608886A (en) | Automatic drift for boring mill spindles | |
US2050413A (en) | Combined drill and boring tool | |
US2499252A (en) | Earth boring tool |