US143217A - Improvement in wood-screws - Google Patents
Improvement in wood-screws Download PDFInfo
- Publication number
- US143217A US143217A US143217DA US143217A US 143217 A US143217 A US 143217A US 143217D A US143217D A US 143217DA US 143217 A US143217 A US 143217A
- Authority
- US
- United States
- Prior art keywords
- wood
- screws
- improvement
- barrett
- point
- 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
- RNAMYOYQYRYFQY-UHFFFAOYSA-N 2-(4,4-difluoropiperidin-1-yl)-6-methoxy-n-(1-propan-2-ylpiperidin-4-yl)-7-(3-pyrrolidin-1-ylpropoxy)quinazolin-4-amine Chemical compound N1=C(N2CCC(F)(F)CC2)N=C2C=C(OCCCN3CCCC3)C(OC)=CC2=C1NC1CCN(C(C)C)CC1 RNAMYOYQYRYFQY-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
- F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
Definitions
- My invention consists Vin making the ordinary woodscrew with a drill-point-V-shaped and beveled like the points of drills used by Workers of iron and brass. The distance from the drill-point to the commencement of the thread Attest:
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
Description
o. n. BARRETT. l
y Wood Screws. f No". 143,217, PatentedhSeptemberBO,183,
hyanan UNITED STATES PATENT OFFICEc OLIVER D. BARRETT, OF WASHINGTON, DISTRICT OF COLUMBIA.
IMPROVEMENT IN woon-scRs-ws.
Specication forming part of Letters Patent No. 143,217, dated September 30, 1873; application filed September 5, 1873.
To all whom it may concern:
Be it known that I, OLIVER 'D. BARRETT, of Washington city, in the District of Columbia, have invented certain Improvements in VWood-Screws, of which the following is a specification:
The object of my inventionris to make such a point on the screw as will render it capable of being driven into any kind of wood-hard or soft- With an ordinary screwdriver Without the necessity of first making a hole for the same with a bit or other instrument. My invention consists Vin making the ordinary woodscrew with a drill-point-V-shaped and beveled like the points of drills used by Workers of iron and brass. The distance from the drill-point to the commencement of the thread Attest:
T. T. CRITTENDEN,
GEO. W. GrsT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US143217A true US143217A (en) | 1873-09-30 |
Family
ID=2212630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US143217D Expired - Lifetime US143217A (en) | Improvement in wood-screws |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US143217A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3045523A (en) * | 1960-08-25 | 1962-07-24 | Nd Edgar Reed | Drill point screw having interrupted leading end threads formed by a flat chordal surface |
| US6296433B1 (en) * | 2000-09-05 | 2001-10-02 | Illinois Tool Works Inc. | Large diameter tapcon with debris reservoir end or tip |
-
0
- US US143217D patent/US143217A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3045523A (en) * | 1960-08-25 | 1962-07-24 | Nd Edgar Reed | Drill point screw having interrupted leading end threads formed by a flat chordal surface |
| US6296433B1 (en) * | 2000-09-05 | 2001-10-02 | Illinois Tool Works Inc. | Large diameter tapcon with debris reservoir end or tip |
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