US977877A - Post-hole auger. - Google Patents
Post-hole auger. Download PDFInfo
- Publication number
- US977877A US977877A US48429409A US1909484294A US977877A US 977877 A US977877 A US 977877A US 48429409 A US48429409 A US 48429409A US 1909484294 A US1909484294 A US 1909484294A US 977877 A US977877 A US 977877A
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- US
- United States
- Prior art keywords
- blades
- post
- cutters
- hole auger
- inwardly
- 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
- 238000010276 construction Methods 0.000 description 3
- 210000003141 lower extremity Anatomy 0.000 description 3
- 241000277284 Salvelinus fontinalis Species 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
Images
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
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
Definitions
- This invention relates to post hole augers such as are used in boring holes in the ground to insert posts or poles, or for similar purposes.
- the device belongs to a type presenting two oppositely disposed blades which are formed at their lower extremities into cutters ar knives which cut through the earth when the device is revolved.
- the object of the present invention is to provide the blades with auxiliary centrally disposed cutters and to provide a construction which will insure that these central cutters or bits will be rigidly held.
- Figure 1 is a side elevation of a post hole auger constructed according to my invention, a portion of the stem or handle thereof being broken away;
- Fig. 2 is a side elevation of the cutter head at the lower end of the device;
- Fig. 3 is an end elevation of the device viewed from its lower extremity;
- Fig. 4c is a cross section on the line a 4. of Fig. 1;
- Fig. 5 is a vertical section taken through the lower end of the cutter head and showing the construction for insuring the rigidity of the center cutters or bits;
- Fig. 6 is an end elevation showing one of the blades removed.
- 1 represents the handle of the device which is adapted to be made of tubing or similar material, and the lower end of this handle is secured in a socket 2 which forms the middle part of a fork 3 having two arms a which extend downwardly, as shown.
- blades 5, 5 are attached to the lower extremity of the arms 4:. These blades are substantially of the same form.
- each shell Adjacent to the rear vertical edges of the blades, with respect to the direction of rotation, the blades are formed with downwardly extending inwardly curved teeth 6, and the forward edges 7, with respect to the direction of rotation of these blades, are sharpened, as will be readily understood.
- the remainder of the lower portion of each shell, near the root of the tooth 6, is bent inwardly so as to form inwardly inclined substantially flat cutters 8.
- These cutters meet at the point 9 and present fiat vertical faces 10 at this part, which seat against each other, as indicated most clearly in Fig. 3. Beyond these flattened faces or checks 10, the material of each cutter 8 is bent so as to form radially projecting bits 11 which are of substantially triangular form, as viewed in side elevation in Fig. 1, and which present their greatest width at their lowest point.
- the cutters 8 are rigidly connected together by a bolt or rivet 12, as indicated.
- a T- connection 13 is attached, in which there is secured a handle bar 14.
- the device may be rotated while held in a vertical position, so that its lower end or cutterhead will advance downwardly into the earth.
- a device of the class described presenting oppositely disposed curved shells having downwardly and inwardly extending teeth adapted to cut the earth and having inwardly and downwardly extending integral blades, said blades having cheeks abutting against each other having points bent transversely to saidcheeks and projecting diametrically opposite to each other.
- a device of the class described presenting a pair of oppositely disposed curved shells having integral downwardly extending teeth projecting inwardly, said shells having inwardly and downwardly extending blades presenting cheeks abutting together, and a fastener at said cheeks connecting said blades directly to each other, said blades having extensions projecting downwardly and forming bits disposed adjacent to the central axis between said shells.
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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)
- Earth Drilling (AREA)
Description
R. T. JENNEY. POST HOLE AUGER. V APPLIOATION FILED MAR.1B, 1909.
Patented Dec. 6,1910.
"WEI/TOR 13019 12313 1927269 Aim/Mrs ROBERT THOMAS JENNEY, OF DE PERE, WISCONSIN.
POST-HOLE AUGER.
Specification of Letters Patent.
Application filed March 18, 1909.
Patented Dec. 6, 1910.
Serial No. 484,294.
T 0 all whom it may concern:
Be it known that 1, ROBERT T. JENNEY, a citizen of the United States, and a resident of De Pere, in the county of Brown and State of WVisconsin, have invented a new and Improved Post-Hole Auger, of which the following is a full, clear, and exact description. V
This invention relates to post hole augers such as are used in boring holes in the ground to insert posts or poles, or for similar purposes. The device belongs to a type presenting two oppositely disposed blades which are formed at their lower extremities into cutters ar knives which cut through the earth when the device is revolved.
The object of the present invention is to provide the blades with auxiliary centrally disposed cutters and to provide a construction which will insure that these central cutters or bits will be rigidly held.
The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims.
Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.
Figure 1 is a side elevation of a post hole auger constructed according to my invention, a portion of the stem or handle thereof being broken away; Fig. 2 is a side elevation of the cutter head at the lower end of the device; Fig. 3 is an end elevation of the device viewed from its lower extremity; Fig. 4c is a cross section on the line a 4. of Fig. 1; Fig. 5 is a vertical section taken through the lower end of the cutter head and showing the construction for insuring the rigidity of the center cutters or bits; and Fig. 6 is an end elevation showing one of the blades removed.
- Referring more particularly to the parts, 1 represents the handle of the device which is adapted to be made of tubing or similar material, and the lower end of this handle is secured in a socket 2 which forms the middle part of a fork 3 having two arms a which extend downwardly, as shown. To the lower extremity of the arms 4:, blades 5, 5, are attached. These blades are substantially of the same form. The bodies of the elevation, as shown in Fig. 2, but are curved cylindricallyabout the central axis of the cutter head so that they constitute curved shells.
Adjacent to the rear vertical edges of the blades, with respect to the direction of rotation, the blades are formed with downwardly extending inwardly curved teeth 6, and the forward edges 7, with respect to the direction of rotation of these blades, are sharpened, as will be readily understood. The remainder of the lower portion of each shell, near the root of the tooth 6, is bent inwardly so as to form inwardly inclined substantially flat cutters 8. These cutters meet at the point 9 and present fiat vertical faces 10 at this part, which seat against each other, as indicated most clearly in Fig. 3. Beyond these flattened faces or checks 10, the material of each cutter 8 is bent so as to form radially projecting bits 11 which are of substantially triangular form, as viewed in side elevation in Fig. 1, and which present their greatest width at their lowest point. At the cheeks 10 the cutters 8 are rigidly connected together by a bolt or rivet 12, as indicated.
As shown in Fig. 1, the central bits 11 project slightly below the extremities of the teeth 6.
At the upper end of the handle 1, a T- connection 13 is attached, in which there is secured a handle bar 14. By means of this handle bar the device may be rotated while held in a vertical position, so that its lower end or cutterhead will advance downwardly into the earth.
It will be seen that the arrangement described, consisting in constructing the cutters 8 so that they present flat abutting faces, is highly advantageous as it gives these cutters great rigidity. This rigidity is increased by the rivet which secures the abutting cheeks together. The bits 11 operate to loosen the earth on the central axis of the hole and greatly facilitate the operation of the side teeth 6 and the cutters 8, they also assist materially in starting the device at the ground level and operate as centering devices for the head.
Having thus described my invention, I claim as new and desire to secure by Letters Patent,--
1. A device of the class described presenting oppositely disposed curved shells having downwardly and inwardly extending teeth adapted to cut the earth and having inwardly and downwardly extending integral blades, said blades having cheeks abutting against each other having points bent transversely to saidcheeks and projecting diametrically opposite to each other.
-2. A device of the class described, presenting a pair of oppositely disposed curved shells having integral downwardly extending teeth projecting inwardly, said shells having inwardly and downwardly extending blades presenting cheeks abutting together, and a fastener at said cheeks connecting said blades directly to each other, said blades having extensions projecting downwardly and forming bits disposed adjacent to the central axis between said shells. I
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
' ROBERT THOJHAS JENNEY. Witnesses:
RosALIND SALTER, ANDREW H. LAW.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US48429409A US977877A (en) | 1909-03-18 | 1909-03-18 | Post-hole auger. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US48429409A US977877A (en) | 1909-03-18 | 1909-03-18 | Post-hole auger. |
Publications (1)
Publication Number | Publication Date |
---|---|
US977877A true US977877A (en) | 1910-12-06 |
Family
ID=3046255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US48429409A Expired - Lifetime US977877A (en) | 1909-03-18 | 1909-03-18 | Post-hole auger. |
Country Status (1)
Country | Link |
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US (1) | US977877A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2784944A (en) * | 1953-07-10 | 1957-03-12 | Eugene J Freeman | Earth boring auger and head therefor |
-
1909
- 1909-03-18 US US48429409A patent/US977877A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2784944A (en) * | 1953-07-10 | 1957-03-12 | Eugene J Freeman | Earth boring auger and head therefor |
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