US211819A - Improvement in harrow-teeth - Google Patents
Improvement in harrow-teeth Download PDFInfo
- Publication number
- US211819A US211819A US211819DA US211819A US 211819 A US211819 A US 211819A US 211819D A US211819D A US 211819DA US 211819 A US211819 A US 211819A
- Authority
- US
- United States
- Prior art keywords
- harrow
- tooth
- teeth
- improvement
- metal
- 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
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229920003245 polyoctenamer Polymers 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B23/00—Elements, tools, or details of harrows
- A01B23/02—Teeth; Fixing the teeth
Definitions
- My invention consists in aharrow-tooth having a steel center, so that it forms a self-sharpening tooth, as hereinafter more fully set forth.
- Figure 1 represents a side view of a tooth; and Fig. 2, a crosssection of the same, taken through linew a, Fig. 1.
- the tooth is formed of three pieces of metal.
- the center piece, I) is of steel, while the two pieces a a, at each side of the same, are of iron or other soft metal.
- the parts are rolled together, and may or may not be provided with a head, (Z. In some cases a screw-tenon may be formed at the top instead of the head.
- the tooth may be of any preferable shape, and can be used either as a harrow or cultivator tooth.
- the steel center is about one-third the thickness of the tooth, and when in use the iron or other soft metal will wear away and forma self-sharpening tooth.
- the metal may be rolled in long bars and cut in lengths to suit, and then formed with a point, I), on-the end.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Cosmetics (AREA)
Description
E. ,R. WHITNEY, Harrow-Tooth.
No.211,819. Patented Jan. 28,1879.
IJVV' ,TOR 6404MB MFETERS. 'PHOTO-UTHOGRAPHER. WASHINGTON. D C.
UNITED STATES PATENT FFICE.
EDWVIN R. WVHITNEY, OF MONTREAL, CANADA, ASSIGNOR OF ONE-FOURTH HIS RIGHT TO CHAS. L. BOSSE, OF SAME PLACE.
IMPROVEMENT IN HARROW-TEETH.
Specification forming part of Letters Patent No. 21] .819, dated January 28, 1879;- application filed June 28, 1878.
To all whom it may concern:
Be it known that I, EDWIN R. WHITNEY, of Montreal, in the Dominion of Canada, have invented certain new and useful Improvements in Harrow-Teeth; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.
My invention consists in aharrow-tooth having a steel center, so that it forms a self-sharpening tooth, as hereinafter more fully set forth.
In the accompanying drawings, making a part of this specification, Figure 1 represents a side view of a tooth; and Fig. 2, a crosssection of the same, taken through linew a, Fig. 1.
The tooth is formed of three pieces of metal. The center piece, I), is of steel, while the two pieces a a, at each side of the same, are of iron or other soft metal. The parts are rolled together, and may or may not be provided with a head, (Z. In some cases a screw-tenon may be formed at the top instead of the head. The tooth may be of any preferable shape, and can be used either as a harrow or cultivator tooth. The steel center is about one-third the thickness of the tooth, and when in use the iron or other soft metal will wear away and forma self-sharpening tooth. The metal may be rolled in long bars and cut in lengths to suit, and then formed with a point, I), on-the end.
Having thus fully described my invention, what I claim is- A harrow or cultivator tooth formed with a central steel section, b, and two side bars or pieces, a a, of softer metal, for the purposes set forth.
In testimony that I claim the foregoing I have hereunto set my hand this 15th day of May, 1878.
E. R. WHITNEY. \Vitnesses: ANDREW J. SIMrsoN,
ANGUS MCKAY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US211819A true US211819A (en) | 1879-01-28 |
Family
ID=2281226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US211819D Expired - Lifetime US211819A (en) | Improvement in harrow-teeth |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US211819A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060254187A1 (en) * | 1996-03-19 | 2006-11-16 | Kinya Aota | Method of joining two members by friction stir welding |
-
0
- US US211819D patent/US211819A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060254187A1 (en) * | 1996-03-19 | 2006-11-16 | Kinya Aota | Method of joining two members by friction stir welding |
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