US328320A - Countersink - Google Patents
Countersink Download PDFInfo
- Publication number
- US328320A US328320A US328320DA US328320A US 328320 A US328320 A US 328320A US 328320D A US328320D A US 328320DA US 328320 A US328320 A US 328320A
- Authority
- US
- United States
- Prior art keywords
- cone
- notch
- cutter
- countersink
- curved
- 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
- ROHFNLRQFUQHCH-YFKPBYRVSA-N L-leucine Chemical compound CC(C)C[C@H](N)C(O)=O ROHFNLRQFUQHCH-YFKPBYRVSA-N 0.000 description 4
- 210000001699 lower leg Anatomy 0.000 description 4
- 241000507564 Aplanes Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/04—Drills for trepanning
- B23B51/05—Drills for trepanning for cutting discs from sheet
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- 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
- Y10T408/86—Tool-support with means to permit positioning of the Tool relative to support
Definitions
- PETERS Phnlo-Lmwgrapbor. Wahingion. DC
- My invention consists of a contrivance for the practicable arrangement of an adjustable cutter in the cone of a countersink for the taper heads of wood and other screws, whereby such tools may have cutters that may be readily sharpened and reset, which, owing to the obstacle that the peculiar form of such tools has up to this time presented to the use of adj ustable cutters, have only been provided with solid cutters of the cone itself, which are both difficult to sharpen, and, being sharpened,alter the size and shape of the tool so that it soon becomes useless.
- Figure 1 is a side elevation of my improved countersink
- Fig. 2 is aplan of the cone, with the shank in horizontal section.
- the front wall, d, of the notch is tangent to the shank at the top, but inclines forward from the top downward to a radial line, or thereabout; but the form of this side of the notch is not material, except that it should join the inner edge of the back wall evenly and without an offset or ledge.
- the edge can be ground without taking the cutter ofi the cone, which is a gage to which the cutter may by accurately ground, the cutter being preferably shifted slightly forward of its normal position while being ground for the protection of the cone, and subsequently shifted back.
Description
(No Model.)
P. LEU.
GOUNTERSINK. No. 328,320. Patented-Oct. 13, 1885.
WITNESSES: INVENTQQ:
N. PETERS, Phnlo-Lmwgrapbor. Wahingion. DC,
UNITED STATES PATENT OFFICE,
FREDERICK LEU, OF BROOKLYN, YORK.
COUNTERSINK.
SPECIFICATION forming part of Letters Patent No. 328,320, dated October 13, 1885.
Application filed July 11, 1885. Serial No. 171,288. (No model.)
T0 at whom it may concern:
Be it known that I, FREDERICK LEU, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Oountersinks, of which the following is a specification.
My invention consists of a contrivance for the practicable arrangement of an adjustable cutter in the cone of a countersink for the taper heads of wood and other screws, whereby such tools may have cutters that may be readily sharpened and reset, which, owing to the obstacle that the peculiar form of such tools has up to this time presented to the use of adj ustable cutters, have only been provided with solid cutters of the cone itself, which are both difficult to sharpen, and, being sharpened,alter the size and shape of the tool so that it soon becomes useless.
In the accompanying drawings, Figure 1 is a side elevation of my improved countersink, and Fig. 2 is aplan of the cone, with the shank in horizontal section.
I make a notch in the side of the cone a extending from the top of the cone to the point, said notch being circumferentially a little less than a quarter of the cone in extent, and radially it extends to the periphery of theshank b, or thereabout, at the top of the cone, and to the center or a little deeper at the point, and I construct the back wall, 0, of this notch on a true curve the chord of which is about radial to the axis of the tool.
The front wall, d, of the notch is tangent to the shank at the top, but inclines forward from the top downward to a radial line, or thereabout; but the form of this side of the notch is not material, except that it should join the inner edge of the back wall evenly and without an offset or ledge. To this curved back wall'of the notch I attach a correspond ingly-curved and tapered cutter, e, of thin steel, by a set-screw, f, tapped into the cone through a slot, 9, of the cutter, by which the cutter is firmly secured, and at the same time is capable of being shifted outward from time to time as it is required to grind the edge sharp.
The edge can be ground without taking the cutter ofi the cone, which is a gage to which the cutter may by accurately ground, the cutter being preferably shifted slightly forward of its normal position while being ground for the protection of the cone, and subsequently shifted back.
What I claim, and desire to secure by Letters Patent, is-
The combination, with the cone of a countersink having a tapered notch in the side extending from the top of the cone to the point and curved in the back wall, substantially as described, of the correspondingly-tapered and curved cutter adj ustably secured to said curved wall of the notch, as herein set forth.
In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.
FREDERICK LEU.
Witnesses:
WV. J. MORGAN, S. H. MORGAN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US328320A true US328320A (en) | 1885-10-13 |
Family
ID=2397433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US328320D Expired - Lifetime US328320A (en) | Countersink |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US328320A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022069284A1 (en) | 2020-09-30 | 2022-04-07 | Forglass Engineering spolka z ograniczona odpowiedzialnoscia | Integrated bubbling nozzle and method of zone homogenization of glass melt during melting using the same |
-
0
- US US328320D patent/US328320A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022069284A1 (en) | 2020-09-30 | 2022-04-07 | Forglass Engineering spolka z ograniczona odpowiedzialnoscia | Integrated bubbling nozzle and method of zone homogenization of glass melt during melting using the same |
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