US1320985A - Drill-point - Google Patents
Drill-point Download PDFInfo
- Publication number
- US1320985A US1320985A US1320985DA US1320985A US 1320985 A US1320985 A US 1320985A US 1320985D A US1320985D A US 1320985DA US 1320985 A US1320985 A US 1320985A
- Authority
- US
- United States
- Prior art keywords
- drill
- point
- grooves
- oil
- brightman
- 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
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229920001875 Ebonite Polymers 0.000 description 2
- 210000003414 Extremities Anatomy 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 210000001699 lower leg Anatomy 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
- 229910052895 riebeckite Inorganic materials 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
- B23B51/02—Twist drills
-
- 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
- Y10T408/909—Having peripherally spaced cutting edges
- Y10T408/9095—Having peripherally spaced cutting edges with axially extending relief channel
- Y10T408/9097—Spiral channel
Definitions
- This invention relates to drills and more particularly to the point of the drill, an object being to provide a point for use in drilling into soft metal, hard rubber, asbestos and the like, which will produce a smooth hole. Another object is to provide a drill having a point which will not choke and which will minimize the danger of breakage when the drill is turned backward, the formation of the point also especially adapting it for use with oil when required, as in boring into hard metals, the point retaining the oil better than the ordinary drill point;
- Figure 1 is a side elevation of a twist drill provided with a point constructed in accordance with the invention
- Fig. 2 is a bottom plan view of thesame.
- the drill which is shown at 10 is of the twist type having opposite spiral grooves 11 extending throughout its length and a beveled point 12.
- the invention resides in diametrically opposite sides. tween the spiral grooves of the drill be- 11 additional Specification of Letters Patent.
- grooves 13 the latter being of novel formation.
- the grooves 13 are V-shaped in cross section and extend inwardly toward one another in close proximity to the point of the drill, the walls 14 of the groove flaring outwardly, so that the widest point of the groove is at the periphery of the drill.
- the grooves 13 extend upwardly along the shank becoming gradually shallower so as to ter1ninate a short distance above the point of the drill as shown at 15.
- the walls 16 of the grooves 13 gradually converge from the point of the drill to the point 15, so that the edges of the grooves 13 define a substantially inverted V shaped pocket for the retention of a suitable lubricant.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Description
F. C. BRIGHTMAN.
DRILL POINT.
APPLICATION FILED JUNE L 1918.
1,329,985., Patented Nov. 4, 1919.
wvemtoz finzyhtmaw FTCE.
FRANK C. BRIGHTMAN, OF NEW BEDFORD, MASSACHUSETTS.
DRILL-POIN '1.
Application filed June 7, 1918.
To all whom it may concern:
Be it known that I, FRANK G. BRIGI-ITMAN, a citizen of the United States, residing at New Bedford, in the county of Bristol and State of Massachusetts, have invented new, and useful Improvements in Drill-Points, of which the following is a specification.
This invention relates to drills and more particularly to the point of the drill, an object being to provide a point for use in drilling into soft metal, hard rubber, asbestos and the like, which will produce a smooth hole. Another object is to provide a drill having a point which will not choke and which will minimize the danger of breakage when the drill is turned backward, the formation of the point also especially adapting it for use with oil when required, as in boring into hard metals, the point retaining the oil better than the ordinary drill point;
Other objects and advantages of the invention will appear as the following description is read in connection with the accompanying drawings, in which;
Figure 1 is a side elevation of a twist drill provided with a point constructed in accordance with the invention;
Fig. 2 is a bottom plan view of thesame.
Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the drill which is shown at 10 is of the twist type having opposite spiral grooves 11 extending throughout its length and a beveled point 12.
The invention resides in diametrically opposite sides. tween the spiral grooves of the drill be- 11 additional Specification of Letters Patent.
providing upon Patented Nov. 4, 1919. Serial No. 238,762.
By constructing the point as above described, there is produced a drill which will out a clean hole, clear itself, require less power for operation and will also hold oil, also it is desired that it be understood that the drill is not intended for an oil drill.
aving described the invention, what is claimed is The combination with a twist drill having spiral grooves and a beveled point, and relatively shallow V-shaped grooves formed in the periphery of of the spiral grooves, said grooves being relatively short in length and deepest adj acent the drill point with their sides and bottom converging at their opposite or inner extremities to provide pockets at the point of the drill. a
In testimony whereof I affix my signature.
FRANK o. BRIGHTMAN.
Gonies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.
Washington, D. O.
the drill between the edges
Publications (1)
Publication Number | Publication Date |
---|---|
US1320985A true US1320985A (en) | 1919-11-04 |
Family
ID=3388451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1320985D Expired - Lifetime US1320985A (en) | Drill-point |
Country Status (1)
Country | Link |
---|---|
US (1) | US1320985A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3706504A (en) * | 1970-07-29 | 1972-12-19 | Louis Simonffy | Spiral drill having unequal cutting faces |
US20060115339A1 (en) * | 2004-12-01 | 2006-06-01 | Union Tool Co. | Drill |
US20070125883A1 (en) * | 2005-12-01 | 2007-06-07 | Cotler Elliot M | Lubricator nozzle and emitter element |
US20100158626A1 (en) * | 2008-12-23 | 2010-06-24 | Tatsuo Nakahata | Drill and drilling method for workpiece |
US20100158627A1 (en) * | 2008-12-22 | 2010-06-24 | Afzaal Mir | Drill bit for drilling holes in carboresin laminates |
US20100166517A1 (en) * | 2008-12-26 | 2010-07-01 | Fuji Jukogyo Kabushiki Kaisha | Drill |
US20100232899A1 (en) * | 2009-03-13 | 2010-09-16 | Manabu Saito | Drill |
-
0
- US US1320985D patent/US1320985A/en not_active Expired - Lifetime
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3706504A (en) * | 1970-07-29 | 1972-12-19 | Louis Simonffy | Spiral drill having unequal cutting faces |
US7354229B2 (en) * | 2004-12-01 | 2008-04-08 | Union Tool Co. | Drill |
US20060115339A1 (en) * | 2004-12-01 | 2006-06-01 | Union Tool Co. | Drill |
US8074901B2 (en) * | 2005-12-01 | 2011-12-13 | Uniwave, Inc. | Lubricator nozzle and emitter element |
US20070125883A1 (en) * | 2005-12-01 | 2007-06-07 | Cotler Elliot M | Lubricator nozzle and emitter element |
US20100158627A1 (en) * | 2008-12-22 | 2010-06-24 | Afzaal Mir | Drill bit for drilling holes in carboresin laminates |
US8052361B2 (en) * | 2008-12-22 | 2011-11-08 | Afzaal Mir | Drill bit for drilling holes in carboresin laminates |
US8622663B1 (en) | 2008-12-22 | 2014-01-07 | Afzaal Mir | Drill bit for drilling holes in carboresin laminates |
US20100158626A1 (en) * | 2008-12-23 | 2010-06-24 | Tatsuo Nakahata | Drill and drilling method for workpiece |
US9180531B2 (en) | 2008-12-23 | 2015-11-10 | Fuji Jukogyo Kabushiki Kaisha | Drill and drilling method for workpiece |
US9981322B2 (en) | 2008-12-23 | 2018-05-29 | Subaru Corporation | Drill and drilling method for workpiece |
US20100166517A1 (en) * | 2008-12-26 | 2010-07-01 | Fuji Jukogyo Kabushiki Kaisha | Drill |
US9168593B2 (en) | 2008-12-26 | 2015-10-27 | Fuji Jukogyo Kabushiki Kaisha | Drill |
US20100232899A1 (en) * | 2009-03-13 | 2010-09-16 | Manabu Saito | Drill |
US8734067B2 (en) * | 2009-03-13 | 2014-05-27 | Fuji Jukogyo Kabushiki Kaisha | Drill |
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