US283705A - Hffiam e - Google Patents
Hffiam e Download PDFInfo
- Publication number
- US283705A US283705A US283705DA US283705A US 283705 A US283705 A US 283705A US 283705D A US283705D A US 283705DA US 283705 A US283705 A US 283705A
- Authority
- US
- United States
- Prior art keywords
- bit
- cutters
- spurs
- curved
- edge
- 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 8
- 206010002368 Anger Diseases 0.000 description 6
- 210000000088 Lip Anatomy 0.000 description 6
- 239000002023 wood Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000009740 moulding (composite fabrication) Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G15/00—Boring or turning tools; Augers
-
- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/901—Having axially extending peripheral cutting spur
Definitions
- My invention relates to angers and bits, the object being to providea bit adapted to be operated with the minimum pressure and to bore a smooth clean-cut hole.
- a straight cutting-edge is presented to the wood or other material operated upon.
- Myinvention consists, broadly, in the combination, with curved or downwardly-arched cutters, of depending guide spurs or cutters, as hereinafter fully described.
- Figure 1 represents an elevation of a bit constructed in accordance with Figs. 2 and 3 represent enlarged views of a portion of a bit embodying my improvement.
- A represents a double-twist bit provided with the usual screw or gimlet point, B.
- 'G G represent the cutters or lower ends of the spirals of the bit. 7 These cutters are each downwardly curved or arched from the screw B to the-outer edge of the spirals, thus form ing gouge-shaped floor-lips.
- D D represent spurs or cutters depending from the ends of the spirals adjacent to the outer edges of the curved cutters G O, and
- the bit. may be provided with upwardly-projecting lips E E, arranged upon the upper edge of the spirals, opposite the spurs D D.
- the bit instead of presenting a straight outtin g-edge to the material to be bored, a curved edge is presented whose central portion will first come in contact with the wood, thus giv' ing the advantage of a gradual 0r shaving action, which materially lessens the pressure required to operate the bit.
- This advantage is particularly valuable when the boring is to be done through the end of a piece of wood, as it is very difficult to cut through the grain with a straight cutting-edge.
- the depending spurs serve to guide the bit and cut and finish the bore.
- the'edges of the cutters O C may be curved horizontally as well as vertically, if desired; but such horizontal curving must be gradual, it being desirable to leave sufficient room to cut the thread upon the point B.
Description
(No Model.)
H. E. FULLER.
BORING BIT. No. 283,705. Patented A11g.21, 1883.
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UNITED STATES PATENT OFFICEu nrann FULLER, on NEW YORK, ASSIGNOR TO ESTHER A. BRAMHALL, or
BROOKLYN, n. Y.
BORING-BIT.
SIPECIFIGATION forming part of Letters Patent No. 288,705, dated AugustQl, 1883.
Application filed F'ebruary15, 1883. (No model.)
To all whom it may concern:
Be it known that I, HIRAM E. FULLER, of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Bits and'Angers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.
My invention relates to angers and bits, the object being to providea bit adapted to be operated with the minimum pressure and to bore a smooth clean-cut hole.
Heretofore various arrangements of cutters and spurs or depending guide-lips have been employed; but the same are defective in that .my invention.
a straight cutting-edge is presented to the wood or other material operated upon.
Myinvention consists, broadly, in the combination, with curved or downwardly-arched cutters, of depending guide spurs or cutters, as hereinafter fully described.
The invention further consists in the details of construction hereinafter fully described, and pointed out in the claims.
In the drawings, Figure 1 represents an elevation of a bit constructed in accordance with Figs. 2 and 3 represent enlarged views of a portion of a bit embodying my improvement.
A represents a double-twist bit provided with the usual screw or gimlet point, B.
'G G represent the cutters or lower ends of the spirals of the bit. 7 These cutters are each downwardly curved or arched from the screw B to the-outer edge of the spirals, thus form ing gouge-shaped floor-lips.
D D represent spurs or cutters depending from the ends of the spirals adjacent to the outer edges of the curved cutters G O, and
' preferably just in the rear of the upwardlycurved outer edge of the floor-lip.
If desired, the bit. may be provided with upwardly-projecting lips E E, arranged upon the upper edge of the spirals, opposite the spurs D D.
It will be apparent, from the construction thus shown and'described, that inthe use of,
the bit, instead of presenting a straight outtin g-edge to the material to be bored, a curved edge is presented whose central portion will first come in contact with the wood, thus giv' ing the advantage of a gradual 0r shaving action, which materially lessens the pressure required to operate the bit. This advantage is particularly valuable when the boring is to be done through the end of a piece of wood, as it is very difficult to cut through the grain with a straight cutting-edge.
The depending spurs serve to guide the bit and cut and finish the bore.
As illustrated in the drawings, the'edges of the cutters O C may be curved horizontally as well as vertically, if desired; but such horizontal curving must be gradual, it being desirable to leave sufficient room to cut the thread upon the point B.
It will be apparent that my invention comprehends the use of the depending cutters and curved cutting-edges without the upwardlyprojecting lips E E, and I therefore do not limit myself to the precise construction shown,
but reserve to myself the right to make such changes and modifications as may properly fall within the scope of my invention.
It will also be obvious that my improvement is adapted to angers and bits of all kinds and sizes, and that the same is inexpensive in construction and durable in use.
Having fully described myinvention, what I claim as new, and desire to secure by Letters Patent, is
downwardly and horizontally, and depending spurs and upwardly-projecting lips, substantially as set forth.
In testimony whereof I have signed this specification in the presence of two snbscribing witnesses.
HIRAM E. FULLER.
XVitnesses:
F. 0. MoCLEAnY, G. B. HARRIS.
Publications (1)
Publication Number | Publication Date |
---|---|
US283705A true US283705A (en) | 1883-08-21 |
Family
ID=2352911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US283705D Expired - Lifetime US283705A (en) | Hffiam e |
Country Status (1)
Country | Link |
---|---|
US (1) | US283705A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2498909B (en) * | 2010-11-22 | 2017-04-26 | Flexenable Ltd | Segmented target for vapour deposition process |
-
0
- US US283705D patent/US283705A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2498909B (en) * | 2010-11-22 | 2017-04-26 | Flexenable Ltd | Segmented target for vapour deposition process |
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