US1651796A - Double-threaded screw - Google Patents
Double-threaded screw Download PDFInfo
- Publication number
- US1651796A US1651796A US12547A US1254725A US1651796A US 1651796 A US1651796 A US 1651796A US 12547 A US12547 A US 12547A US 1254725 A US1254725 A US 1254725A US 1651796 A US1651796 A US 1651796A
- Authority
- US
- United States
- Prior art keywords
- screw
- double
- wood
- point
- threaded screw
- 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 14
- 239000000835 fiber Substances 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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
- F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
- F16B25/0015—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a soft organic material, e.g. wood or plastic
-
- 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
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
- F16B25/0068—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw with multiple-threads, e.g. a double thread screws
Definitions
- My invention relates to screws having particular reference to'a wood screw f'th-e type used by carpenters, tradesmen and the like, and which is adapted to be turned into position by means of a screw driver or the like.
- the primary object of my invention is the provision of a screw having a tapered body portion with a double thread upon the body 1 portion of the screw, the said double thread terminating in a single penetrating point so that the screw will enter and separate the fibers of the wood into which the screw is driven rather than out the fibers from the wood as is common with screws of this type heretofore manufactured.
- screws of the same general type as my improvements have been used heretofore, but these screws have a pair of incising blades at the end of the screw, each thread terminating in an incising blade and which cut the fibers of'the wood as the screw is driven into the wood, and which cut out the fibers of the wood at least to the diameter of the two incising blades and thereafter the fibers are spread somewhat and engaged by the threads on the side of the screw.
- the common ordinary type of commercial screw has a single thread which terminates in a point, but this point is not an incising one and in driving this screw into wood a glmlet hole must be made, particularly if the wood is hard, before the screw can be driven into the wood at all.
- Another object of my invention is the provision of a double threaded screw, having the threads fashioned into a single penetrating point and which has the thread formed thereon having a longer angle at the upper side of the thread'than at the under side thereby enabling the screw to force its way into wood easier than the ordinary screw and with less force needed to drive it into position.
- Another and further object of my invention is the provision of a screw which can be easily and cheaply manufactured and which has an incising or chiseled int thereon which enables it to be driven into the wood in a straitght line without the danger of breaking e point which sometimes occurs detail,
- Figure 2 is a diagrammatic View, showing the outlines of the threads in an enlarged form converging to cutting edges tapering to a point.
- Figure 3 is a side elevational view of the screw, shown at right angles to the illustration in Figure 1.
- a screw 10 having a head 11 secured thereto with transversely extending slot 12 therein so that the head may be engaged by a screw driver or the like.
- the screw 10 is formed with the stem 13 having a tapered portion 14 terminating in a central penetrating point 17, and the double threads 15 and 16, slightly undercut, and extending from said stem 1nto and along the tapered portion 14 thereof and finishing on either side of the point 17 and merging into the cutters 18 and 19, which converge to said point across the grooves or channels 20 and 21 of the threads respectively.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Wood Science & Technology (AREA)
- Toilet Supplies (AREA)
Description
Dec. 6, 1927.
J. A. ARENZ DOUBLE THREADED SCREW Filed March 2, 1925 Patented Dec. 6, 192?.
carries mm earner series.
JOHN A. ARENZ, OF CHICAGO, ILLINOIS, ASSIGNOR TO INTERNATIONAL SCREW COM- IPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.
DOUBLE-THREADED scnnw.
Application filed. March 2, 1925.
My invention relates to screws having particular reference to'a wood screw f'th-e type used by carpenters, tradesmen and the like, and which is adapted to be turned into position by means of a screw driver or the like.
The primary object of my invention is the provision of a screw having a tapered body portion with a double thread upon the body 1 portion of the screw, the said double thread terminating in a single penetrating point so that the screw will enter and separate the fibers of the wood into which the screw is driven rather than out the fibers from the wood as is common with screws of this type heretofore manufactured.
I am aware that screws of the same general type as my improvements have been used heretofore, but these screws have a pair of incising blades at the end of the screw, each thread terminating in an incising blade and which cut the fibers of'the wood as the screw is driven into the wood, and which cut out the fibers of the wood at least to the diameter of the two incising blades and thereafter the fibers are spread somewhat and engaged by the threads on the side of the screw. The common ordinary type of commercial screw has a single thread which terminates in a point, but this point is not an incising one and in driving this screw into wood a glmlet hole must be made, particularly if the wood is hard, before the screw can be driven into the wood at all.
Another object of my invention is the provision of a double threaded screw, having the threads fashioned into a single penetrating point and which has the thread formed thereon having a longer angle at the upper side of the thread'than at the under side thereby enabling the screw to force its way into wood easier than the ordinary screw and with less force needed to drive it into position. 1
Another and further object of my invention is the provision of a screw which can be easily and cheaply manufactured and which has an incising or chiseled int thereon which enables it to be driven into the wood in a straitght line without the danger of breaking e point which sometimes occurs detail,
Serial No. 12,547.
with a double point screw of the type above described and resulting in the screw traveling at an angle into the wood, which also occurs when the two points of the double threaded screw are not exactly even.
These and other objects of my invention are more fully described and better understood by referring to the accompanying sheet of drawings in which Figure 1 is a side elevational view of the screw embodying my invention, and
Figure 2 is a diagrammatic View, showing the outlines of the threads in an enlarged form converging to cutting edges tapering to a point.
Figure 3 is a side elevational view of the screw, shown at right angles to the illustration in Figure 1.
Referring now specifically to the drawings and in which like reference characters refer to like parts throughout, a screw 10 is shown having a head 11 secured thereto with transversely extending slot 12 therein so that the head may be engaged by a screw driver or the like. The screw 10 is formed with the stem 13 having a tapered portion 14 terminating in a central penetrating point 17, and the double threads 15 and 16, slightly undercut, and extending from said stem 1nto and along the tapered portion 14 thereof and finishing on either side of the point 17 and merging into the cutters 18 and 19, which converge to said point across the grooves or channels 20 and 21 of the threads respectively.
The operation of the device is exceedingly simple there being no necessity for making a gimlet hole or an incision into the wood as there is with either a sin le thread screw or a double thread screw wit two points, unless the wood is exceedingly hard, and for this reason the screw also is much easier secured in place than screws of this type which have heretofdre been manufactured, and hold in position very much better than an ordinary screw or the double threaded two point screw.
Though a preferred embodiment of the present invention has been described in it will be clear that many modifications will occur to those skilled in the art.-
; It is intended to cover all such modifications merged to form a sharp point and forming that fall within the scope of the appended. oppositely positioned cutting edges extendclaim. ing from said point to initially open the What is claimed is: work to the path of the screw in penetrating 5 A screw comprisin 'a stem and tapered operations.
point having a plurality of threads spirally Signed at Chicago, Illinois, this 21st day extending to the extreme ti of the ta ered of February, 1925. portion, the ends of sai spirals ing JOHN A; ARENZ.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12547A US1651796A (en) | 1925-03-02 | 1925-03-02 | Double-threaded screw |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12547A US1651796A (en) | 1925-03-02 | 1925-03-02 | Double-threaded screw |
Publications (1)
Publication Number | Publication Date |
---|---|
US1651796A true US1651796A (en) | 1927-12-06 |
Family
ID=21755478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12547A Expired - Lifetime US1651796A (en) | 1925-03-02 | 1925-03-02 | Double-threaded screw |
Country Status (1)
Country | Link |
---|---|
US (1) | US1651796A (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3233500A (en) * | 1962-10-23 | 1966-02-08 | American Fastener Corp | Screw with main shank threads of a given pitch merging with threads of unlike pitch on a tapered bottom end of the screw shank |
US3949641A (en) * | 1974-11-04 | 1976-04-13 | The Steel Company Of Canada, Limited | Self-drilling screw |
US4323326A (en) * | 1979-01-17 | 1982-04-06 | Mitsuo Okada | Self-drilling screw |
US6015252A (en) * | 1999-02-18 | 2000-01-18 | Peck; Philip D. | Self-tapping screw with improved cutting point |
US20050079027A1 (en) * | 2003-10-10 | 2005-04-14 | Ernst Richard J. | Self-drilling anchor |
US20050084360A1 (en) * | 2003-10-10 | 2005-04-21 | Panasik Cheryl L. | Self-drilling anchor |
US20060039775A1 (en) * | 2002-10-02 | 2006-02-23 | Hiromichi Mizuno | Tapping screw |
US20060140738A1 (en) * | 2004-12-27 | 2006-06-29 | Teng-Hung Lin | Screw |
US20060251493A1 (en) * | 2005-05-04 | 2006-11-09 | Itw Construction Products Aps | Screw with a double thread and a recess in the side of the shank |
US20080025816A1 (en) * | 2006-07-28 | 2008-01-31 | Jau Yeou Industry Co., Ltd. | Multiple-thread screw |
US20100090074A1 (en) * | 2003-10-10 | 2010-04-15 | Illinois Tool Works Inc. | Three Piece Garage Hook |
US20170037893A9 (en) * | 2013-03-15 | 2017-02-09 | Kevin G. Walters | Fastener for Installation Tool for Roof Truss Framing and Construction System |
US20180320727A1 (en) * | 2017-05-02 | 2018-11-08 | Ming-Hao Hsu | Screw for Thin Iron Sheets |
USD854404S1 (en) * | 2017-06-16 | 2019-07-23 | Masterpiece Hardware Industrial Co., Ltd. | Screw |
US11353053B2 (en) * | 2018-03-06 | 2022-06-07 | Sfs Intec Holding Ag | Facade panel screw and fastening arrangement comprising same |
US11433511B2 (en) | 2013-03-15 | 2022-09-06 | Omg, Inc. | Dual positionable fastener installation tool adaptor |
USD1025031S1 (en) * | 2020-09-17 | 2024-04-30 | thatgamecompany, Inc. | Near-field communication enabled smart device |
-
1925
- 1925-03-02 US US12547A patent/US1651796A/en not_active Expired - Lifetime
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3233500A (en) * | 1962-10-23 | 1966-02-08 | American Fastener Corp | Screw with main shank threads of a given pitch merging with threads of unlike pitch on a tapered bottom end of the screw shank |
US3949641A (en) * | 1974-11-04 | 1976-04-13 | The Steel Company Of Canada, Limited | Self-drilling screw |
US4323326A (en) * | 1979-01-17 | 1982-04-06 | Mitsuo Okada | Self-drilling screw |
US6015252A (en) * | 1999-02-18 | 2000-01-18 | Peck; Philip D. | Self-tapping screw with improved cutting point |
US20060039775A1 (en) * | 2002-10-02 | 2006-02-23 | Hiromichi Mizuno | Tapping screw |
US7934895B2 (en) * | 2003-10-10 | 2011-05-03 | Illinois Tool Works Inc. | Self-drilling anchor |
US20050084360A1 (en) * | 2003-10-10 | 2005-04-21 | Panasik Cheryl L. | Self-drilling anchor |
US20100090074A1 (en) * | 2003-10-10 | 2010-04-15 | Illinois Tool Works Inc. | Three Piece Garage Hook |
US20050079027A1 (en) * | 2003-10-10 | 2005-04-14 | Ernst Richard J. | Self-drilling anchor |
US7972100B2 (en) | 2003-10-10 | 2011-07-05 | Illinois Tool Works Inc. | Three piece garage hook |
US20060140738A1 (en) * | 2004-12-27 | 2006-06-29 | Teng-Hung Lin | Screw |
US7090453B2 (en) * | 2004-12-27 | 2006-08-15 | Teng-Hung Lin | Screw |
US20060251493A1 (en) * | 2005-05-04 | 2006-11-09 | Itw Construction Products Aps | Screw with a double thread and a recess in the side of the shank |
US20080025816A1 (en) * | 2006-07-28 | 2008-01-31 | Jau Yeou Industry Co., Ltd. | Multiple-thread screw |
US20170037893A9 (en) * | 2013-03-15 | 2017-02-09 | Kevin G. Walters | Fastener for Installation Tool for Roof Truss Framing and Construction System |
US10018215B2 (en) * | 2013-03-15 | 2018-07-10 | Handy & Harman | Fastener for installation tool for roof truss framing and construction system |
US20180313389A1 (en) * | 2013-03-15 | 2018-11-01 | Handy & Harman | Fastener for Installation Tool for Roof Truss Framing and Construction System |
US10859109B2 (en) * | 2013-03-15 | 2020-12-08 | Omg, Inc. | Fastener for installation tool for roof truss framing and construction system |
US11268561B2 (en) | 2013-03-15 | 2022-03-08 | Omg, Inc. | Installation tool and fastener for roof truss framing and construction system |
US11433511B2 (en) | 2013-03-15 | 2022-09-06 | Omg, Inc. | Dual positionable fastener installation tool adaptor |
US20180320727A1 (en) * | 2017-05-02 | 2018-11-08 | Ming-Hao Hsu | Screw for Thin Iron Sheets |
USD854404S1 (en) * | 2017-06-16 | 2019-07-23 | Masterpiece Hardware Industrial Co., Ltd. | Screw |
US11353053B2 (en) * | 2018-03-06 | 2022-06-07 | Sfs Intec Holding Ag | Facade panel screw and fastening arrangement comprising same |
USD1025031S1 (en) * | 2020-09-17 | 2024-04-30 | thatgamecompany, Inc. | Near-field communication enabled smart device |
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