US138592A - Improvement in wood-screws - Google Patents
Improvement in wood-screws Download PDFInfo
- Publication number
- US138592A US138592A US138592DA US138592A US 138592 A US138592 A US 138592A US 138592D A US138592D A US 138592DA US 138592 A US138592 A US 138592A
- Authority
- US
- United States
- Prior art keywords
- wood
- screw
- screws
- improvement
- threads
- 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
- 239000002023 wood Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 2
- 230000009514 concussion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 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
- F16B15/00—Nails; Staples
- F16B15/06—Nails; Staples with barbs, e.g. for metal parts; Drive screws
Definitions
- Figure 1 rep resents a vertical section of my improved woodscrew; and Fig. 2, a horizontal section of the same.
- the object of my invention is to furnish to workers in wood and the public generally a strong and effective wood-screw, which may be driven into the wood like a nail by the hammer, and withdrawn by the screw-driver like a common screw. The wood is penetrated, thereby cutting the fibers, so that a rigid wedge-like adhesion of the same is produced around the body of the screw.
- My invention consists of a triple-threaded screw with conical point, each thread being triangular in sec tion, the lower side beingperpendieular to the core, the upper side slanting downward.
- A represents the woodscrew of the usual material, and provided with a common screw-head, a.
- Three triangular threads, b are out around the cylindrical core d, each thread being of the shape of a rightangle triangle, with the hypotenuse slanting downward, the shorter side being placed under at a right angle to the core.
- the threads b are tapering off at the pointed end 6, of conical shape, which forms the entering part of the screw.
- Screw A is driven into the wood by the blows of the hammer, the'threads b cutting their way in the axis of the screw without deviating from the direction imparted, penetrating even the hardest parts of the wood.
- the force of the concussion gives a turn to the screw resembling the motion of a ball in the grooves of a rifle.
- the fibers of the wood close like wedges into the recesses between the threads, offering a powerful resistance to strain upon the screw, but releasing the same by turning in the opposite direction.
- PAUL GOEPEL T. B. MOSHER.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Stringed Musical Instruments (AREA)
Description
1. K. sTockTonf Wood-Screws. v
NO. 138,592, V Patented May 6.1873.
/ IW'V" Attorneys.
AM. PHam-urnqsnAPn/c on MY (ma/ands macsss UNITED STATES PATENT OFFICE.
JAMES K. STOCKTON, OF NEW YORK, N. Y.
IMPRQVEMENT IN WOOD-SCREWS.
Specification forming part of Letters Patent No. 138,592, dated May 6, 3873; application filed April 12, 1873.
To all whom it may concern:
Be it known that I, JAMES K. STOCKTON, of the city, county, and State of New York, have invented a new and Improved Wood- Screw, of which the following is a specification:
In the accompanying drawing, Figure 1 rep resents a vertical section of my improved woodscrew; and Fig. 2, a horizontal section of the same.
Similar letters of reference indicate corresponding parts.
The object of my invention is to furnish to workers in wood and the public generally a strong and effective wood-screw, which may be driven into the wood like a nail by the hammer, and withdrawn by the screw-driver like a common screw. The wood is penetrated, thereby cutting the fibers, so that a rigid wedge-like adhesion of the same is produced around the body of the screw. My invention consists of a triple-threaded screw with conical point, each thread being triangular in sec tion, the lower side beingperpendieular to the core, the upper side slanting downward.
In the drawing, A represents the woodscrew of the usual material, and provided with a common screw-head, a. Three triangular threads, b, are out around the cylindrical core d, each thread being of the shape of a rightangle triangle, with the hypotenuse slanting downward, the shorter side being placed under at a right angle to the core. The threads b are tapering off at the pointed end 6, of conical shape, which forms the entering part of the screw. Screw A is driven into the wood by the blows of the hammer, the'threads b cutting their way in the axis of the screw without deviating from the direction imparted, penetrating even the hardest parts of the wood. The force of the concussion gives a turn to the screw resembling the motion of a ball in the grooves of a rifle. The fibers of the wood close like wedges into the recesses between the threads, offering a powerful resistance to strain upon the screw, but releasing the same by turning in the opposite direction.
The advantages of a reliable hammer-driving screw are obvious, and will readily be appreciated by the trade.
Having thus described myinvention, I claim as new and desire to secure by Letters Patent The hammer-driving screw A, having triple triangular threads, slanting and rectangular to the core, with conical point, substantially as and for the purpose described,
Witnesses: JAMES K. STOCKTON.
PAUL GOEPEL, T. B. MOSHER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US138592A true US138592A (en) | 1873-05-06 |
Family
ID=2208006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US138592D Expired - Lifetime US138592A (en) | Improvement in wood-screws |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US138592A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4144795A (en) * | 1977-10-20 | 1979-03-20 | Gutshall Charles E | Long-pitch re-rolled crest thread |
-
0
- US US138592D patent/US138592A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4144795A (en) * | 1977-10-20 | 1979-03-20 | Gutshall Charles E | Long-pitch re-rolled crest thread |
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