US4704A - Improvement in wood-screws - Google Patents
Improvement in wood-screws Download PDFInfo
- Publication number
- US4704A US4704A US4704DA US4704A US 4704 A US4704 A US 4704A US 4704D A US4704D A US 4704DA US 4704 A US4704 A US 4704A
- Authority
- US
- United States
- Prior art keywords
- wood
- screw
- screws
- point
- improvement
- 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
- 230000003467 diminishing effect Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000007493 shaping process Methods 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
Definitions
- Figure l is the perfect screw.
- Fig. 2 is the core of the screw with the thread removed to show its form.
- Screws have heretofore been formed gradually tapering at the core from Where the thread starts to the end by dressing the thread at each turn, and tapering screws have also been formed; but they have been found not to hold as well as those of common construction by reason of the taper of the main part of the core; but the nature of my improved screw consists in forming on a screw of the ordinary shape a conical point and extending the thread of the screw with the saine pitch, but gradually diminishing in width to the end of said point, by which means the screw can be entered into the Wood Without boring, unless the wood is very hard, in which case it -follows better, works straight, and holds more firmly than any other heretofore made.
- the screw is formed by any machinery that will make a perfect thread, which is cut into the blank of ordinary make, and when it reaches the full depth it runs down to near the point, shaping the core cylindrical, as shown in Fig. 2 at a.
- the cutters then form the point of the core conical, as shown at b, Fig. 2, and at the same time cut a thread on it of the same pitch as .that on the body of the screw, and gradually diminishing it in depth to the extreme point, Where it terminatesas represented at Fig. l.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Stringed Musical Instruments (AREA)
Description
,UNITED STATES PATENT OFFICE.
THOMAS J. SLOAN, OF NEW YORK, N. Y.
IMPROVEMENT IN WOOD-SCREWS.
Speciiication forming part of Letters Patent N o. 4,704, dated August 20, 1846.
To aZZ whom it may concern,.-
Be it known that I, THOMAS J. SLOAN, of the city, county, and State of New York, have invented an Improved Wood-Screw, which I denominate the threaded conical-point Woodscrew; and I do hereby declare that the following is a full, clear, and exact description of the principle or character which distinguishes it from all other things before known, and of the manner of making, constructing, and
using the same, reference being had to the.
accompanying drawings, making part of this specification, in whichm Figure l is the perfect screw. Fig. 2 is the core of the screw with the thread removed to show its form.
Screws have heretofore been formed gradually tapering at the core from Where the thread starts to the end by dressing the thread at each turn, and tapering screws have also been formed; but they have been found not to hold as well as those of common construction by reason of the taper of the main part of the core; but the nature of my improved screw consists in forming on a screw of the ordinary shape a conical point and extending the thread of the screw with the saine pitch, but gradually diminishing in width to the end of said point, by which means the screw can be entered into the Wood Without boring, unless the wood is very hard, in which case it -follows better, works straight, and holds more firmly than any other heretofore made. The screw is formed by any machinery that will make a perfect thread, which is cut into the blank of ordinary make, and when it reaches the full depth it runs down to near the point, shaping the core cylindrical, as shown in Fig. 2 at a. The cutters then form the point of the core conical, as shown at b, Fig. 2, and at the same time cut a thread on it of the same pitch as .that on the body of the screw, and gradually diminishing it in depth to the extreme point, Where it terminatesas represented at Fig. l.
What I claim as my invention, and desire to secure by Letters Patent, is-v Forming on a Wood-screw of ordinary shape a conical threaded. point, substantially as herein described, the thread on said point being gradually diminished to the end, as
aboveset forth.
THOS. J. SLOAN. Witnesses:
A. P. BROWNE, WM. H. BrsHoP.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US4704A true US4704A (en) | 1846-08-20 |
Family
ID=2065005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US4704D Expired - Lifetime US4704A (en) | Improvement in wood-screws |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US4704A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2787186A (en) * | 1952-03-28 | 1957-04-02 | Brogiotti Antonin | Screw spike with compression producing thread form |
| US20090327275A1 (en) * | 2008-06-30 | 2009-12-31 | Yahoo! Inc. | Automated system and method for creating a content-rich site based on an emerging subject of internet search |
| US20100082576A1 (en) * | 2008-09-25 | 2010-04-01 | Walker Hubert M | Associating objects in databases by rate-based tagging |
| US20100082575A1 (en) * | 2008-09-25 | 2010-04-01 | Walker Hubert M | Automated tagging of objects in databases |
-
0
- US US4704D patent/US4704A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2787186A (en) * | 1952-03-28 | 1957-04-02 | Brogiotti Antonin | Screw spike with compression producing thread form |
| US20090327275A1 (en) * | 2008-06-30 | 2009-12-31 | Yahoo! Inc. | Automated system and method for creating a content-rich site based on an emerging subject of internet search |
| US20100082576A1 (en) * | 2008-09-25 | 2010-04-01 | Walker Hubert M | Associating objects in databases by rate-based tagging |
| US20100082575A1 (en) * | 2008-09-25 | 2010-04-01 | Walker Hubert M | Automated tagging of objects in databases |
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