US108837A - Improvement in countersinks - Google Patents
Improvement in countersinks Download PDFInfo
- Publication number
- US108837A US108837A US108837DA US108837A US 108837 A US108837 A US 108837A US 108837D A US108837D A US 108837DA US 108837 A US108837 A US 108837A
- Authority
- US
- United States
- Prior art keywords
- cutter
- tool
- boring
- countersinks
- hole
- 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 6
- 210000001699 lower leg Anatomy 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 210000003813 Thumb Anatomy 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000002035 prolonged Effects 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
- B23B51/10—Bits for countersinking
- B23B51/108—Bits for countersinking having a centering drill
-
- 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
- Y10T408/87—Tool having stepped cutting edges
- Y10T408/8725—Tool having stepped cutting edges including means to permit relative axial positioning of edges
Definitions
- the invention consists in the combination and arrangement of the several parts, as hereinafter described.
- drawing- A represents a thin flat plate of metal, fashioned into a right-angular yoke or clasp, with its two sides, a b, of equal length or thercabout, a hole, 0, being formed through each side 'in coincidence, these holes being of like size, and equal in diameter to the largest boring-tool which the device will he applied to.
- each 'side a or b isv formed with an elongated orifice or slot, (1 or e, to receive the shank f of the cutter g, which I have adapted to perform the functions of a countersink.
- rectangular bar, and its upper end is prolonged into a sloping pyramidal-shaped or pointed steel plate, the edges of which are sufliciently sharp to cut wood or other material, the shank of such cutter being confined in place within the slots 1! e by a thumb or set-screw, h, which screws through it and into a rectangular oblong block of metal which the clasp A receives.
- This block of metal is represented at i-in the-accom panying drawing as a rectangular oblong bar, provided with a series of vertical holes, 7.: k, bored through it throughout its length, these holes being of varying I diameters and adapted to receive a series of boringtools of corresponding diameters, while the female screw which receives the set-screw h should be situated in alignment with the ccnterof each hole 1:, in order that the countersink or cutter g shall maintain the same relative 'position with each and every hole when used in connection therewith, or the boringvtool inserted in such hole.
- a bit, of the ordinary gouge pattern, is represented at m, in the accompanying drawing, as inserted within the holes 0 e of the clasp A, and one of the holes k of the block 5 with which it assimilates in diameter, the screw h being advanced against the said tool at with sufficient power to retain the clasp, block, cutter, and toolsecurely in their proper positions, the said cutter, as a conseq'nence, traveling with the said tool when the latter is in revolution.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Milling, Drilling, And Turning Of Wood (AREA)
Description
No. 108,837. I PATENTED NOV. 1, 1870,
' W. B. SHEDD.
GOUNTERSINK.
tiniest Siam new cum.
WILLIAM B. SHEDD. OF EAST BOSTON, MASSACHUSETTS.
Letters Patent No. 108,837, dated November 1, 1870.
IMPROVEMENT lN COUNTERSINKS.
. ne'scneauie referred to In mm mm. resent and m of the am To all whom it may concern:
Be it known that I, WILLIAM .B. Sunni), of East Boston, in the county of Suffolk and State of Massachusetts, have made an invention of an Adjustable (lountersinking Device for Boring-Tools; and do hereby declare the nature of such invention, and the mode of carrying the same into efleet, to be herein fullywith a bit gimlet, or other boring-tool, of an adjustable counteisinking device, or cutter, by whose agency the hole bored by such tool is at the same time countersunk to any desired or given depth; and
The invention consists in the combination and arrangement of the several parts, as hereinafter described.
In the drawing- A represents a thin flat plate of metal, fashioned into a right-angular yoke or clasp, with its two sides, a b, of equal length or thercabout, a hole, 0, being formed through each side 'in coincidence, these holes being of like size, and equal in diameter to the largest boring-tool which the device will he applied to.
The outer end of each 'side a or b isv formed with an elongated orifice or slot, (1 or e, to receive the shank f of the cutter g, which I have adapted to perform the functions of a countersink. rectangular bar, and its upper end is prolonged into a sloping pyramidal-shaped or pointed steel plate, the edges of which are sufliciently sharp to cut wood or other material, the shank of such cutter being confined in place within the slots 1! e by a thumb or set-screw, h, which screws through it and into a rectangular oblong block of metal which the clasp A receives.
This block of metal is represented at i-in the-accom panying drawing as a rectangular oblong bar, provided with a series of vertical holes, 7.: k, bored through it throughout its length, these holes being of varying I diameters and adapted to receive a series of boringtools of corresponding diameters, while the female screw which receives the set-screw h should be situated in alignment with the ccnterof each hole 1:, in order that the countersink or cutter g shall maintain the same relative 'position with each and every hole when used in connection therewith, or the boringvtool inserted in such hole.
This position of the cutter g is i such that its apex; or point I shall extend into the channel and closely against the least diameter of the cutting portionof the boring-tool, which, as is well known, is, in all boring-tools or nearly all,"quite small, and nearly of uniform extent.
This entrance of the point anda portion of the effective cntting-suriace of the cutter g within the circumference of the cutting portion of the boring-tool,
fonns'a distinguishing feature in my invention, and
'has the eflect of insuring an easy and smooth countersinking of the hole bored by such tool, which would not be the case did the said point recede, in the least dcgrce, from such circumference, as in such an event it would take into the material and describe a circle or score outside of such hole, and estop all further advance.
A bit, of the ordinary gouge pattern, is represented at m, in the accompanying drawing, as inserted within the holes 0 e of the clasp A, and one of the holes k of the block 5 with which it assimilates in diameter, the screw h being advanced against the said tool at with sufficient power to retain the clasp, block, cutter, and toolsecurely in their proper positions, the said cutter, as a conseq'nence, traveling with the said tool when the latter is in revolution.
Olaim.
The herein-described combination of the clasp A, the cutter 9, block 1;, and screw 71, the whole constituting an adjustable countersink for boring-tools, and operating as set forth. WM. B. SHEDD. Witnesses:
FRED. Ounrrs, En. Gnmrrra.
Publications (1)
Publication Number | Publication Date |
---|---|
US108837A true US108837A (en) | 1870-11-01 |
Family
ID=2178311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US108837D Expired - Lifetime US108837A (en) | Improvement in countersinks |
Country Status (1)
Country | Link |
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US (1) | US108837A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2832386A (en) * | 1953-08-31 | 1958-04-29 | Wood Mfg Co Inc Van | Multi-step drill |
-
0
- US US108837D patent/US108837A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2832386A (en) * | 1953-08-31 | 1958-04-29 | Wood Mfg Co Inc Van | Multi-step drill |
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