GB2361977A - Self locating wood screw - Google Patents

Self locating wood screw Download PDF

Info

Publication number
GB2361977A
GB2361977A GB0010746A GB0010746A GB2361977A GB 2361977 A GB2361977 A GB 2361977A GB 0010746 A GB0010746 A GB 0010746A GB 0010746 A GB0010746 A GB 0010746A GB 2361977 A GB2361977 A GB 2361977A
Authority
GB
United Kingdom
Prior art keywords
head
wood screw
threaded
wood
length
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.)
Withdrawn
Application number
GB0010746A
Other versions
GB0010746D0 (en
Inventor
Robert Butler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0010746A priority Critical patent/GB2361977A/en
Publication of GB0010746D0 publication Critical patent/GB0010746D0/en
Publication of GB2361977A publication Critical patent/GB2361977A/en
Withdrawn legal-status Critical Current

Links

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
    • F16B25/0036—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
    • F16B25/0057—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 the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections
    • F16B25/0063—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 the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections with a non-threaded portion on the shaft of the screw
    • 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
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Connection Of Plates (AREA)
  • Golf Clubs (AREA)

Abstract

A self tapping wood screw has a shaft and a head (5). The shaft has a first unthreaded portion (2) which tapers to a point (1) at an end remote from the head (5), a threaded portion (3) is provided between the first unthreaded portion (2) and a second unthreaded portion (4), shorter in length than the first unthreaded portion (2). The second unthreaded portion (4) extends from the threaded portion (3) to the head (5). In an alternative embodiment, the threaded portion extends between the first unthreaded portion and the head, there being no unthreaded portion adjacent the head.

Description

2361977 SELF-LOCATING WOOD SCREW This invention relates to a type of wood
screw that may be used to attach different materials onto wood.
Historically, such screws are well known but, even when aided with prior use of a tool, such as a gimlet, they are often initially difficult to use and may slip from their intended position until their thread has begun to enter the wood by several turns.
Also, although such screws offer a more robust attachment than the use of, say, a nail, the screwing motion they require to make the attachment is both more difficult to administer and more time consuming than an equivalent attachment using a nail.
An object of this invention is to provide a form of attachment which is easier and quicker to use than a screw but which provides a measure of the robustness of attachment associated with the use of a screw.
Accordingly, this invention comprises a single unit, made from any metal that may be used to construct a conventional wood screw, with a nonthreaded, lower end extending a portion of its length tapering to a point. From the upper part of this non-threaded section a conventional screw thread is fashioned, running up the next portion of its length. A nonthreaded portion, of shorter length to the first, extends upwards from this to the underside of the top. The top may be fashioned into any type of wood screw head, for example, a conventional, countersunk head.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which Figure 1 shows a side view of the entire invention.
Referring to the drawing figure 1, the invention comprises a single unit with a lower, non-threaded, cylindrical portion 2 which tapers to a point 1. The mid portion 3 is threaded, with a conventional screw thread, extending to the upper portion 4 which is also non-threaded. The head 5 may be fashioned into any conventional screw head type. For ease of clarity only, figure 1 has been drawn with a conventional, countersunk head.
In order to operate, the invention may be held loosely at the nonthreaded portion 4 and the point 1 is positioned vertically against the wood into which it will be screwed. The invention is then forced into the wood by hitting the head 5 with a hammer until the lower part of the threaded portion 3 is adjacent to, and touching, the wood. The invention can then be screwed fully into the wood in the conventional manner by use of an appropriate screwdriver located into the head 5.
2_

Claims (2)

1 The invention comprises a single unit, made from any metal that may be used to construct a conventional wood screw, with a non-threaded, lower end extending a portion of its length tapering to a point. From the upper part of this non-threaded section a conventional screw thread is fashioned, running up the next portion of its length. A non-threaded portion, of shorter length to the first, extends upwards from this to the underside of the top, which may be fashioned into any type of wood screw head.
2 A self-locating wood screw as claimed in claim 1 but where the threaded portion continues upwards such that it terminates at the underside of the head.
GB0010746A 2000-05-05 2000-05-05 Self locating wood screw Withdrawn GB2361977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0010746A GB2361977A (en) 2000-05-05 2000-05-05 Self locating wood screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0010746A GB2361977A (en) 2000-05-05 2000-05-05 Self locating wood screw

Publications (2)

Publication Number Publication Date
GB0010746D0 GB0010746D0 (en) 2000-06-28
GB2361977A true GB2361977A (en) 2001-11-07

Family

ID=9890937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0010746A Withdrawn GB2361977A (en) 2000-05-05 2000-05-05 Self locating wood screw

Country Status (1)

Country Link
GB (1) GB2361977A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009070571A1 (en) * 2007-11-27 2009-06-04 Illinois Tool Works Inc. Threaded screw fastener

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1229452A (en) * 1968-01-23 1971-04-21
GB1479600A (en) * 1973-11-13 1977-07-13 British Screw Co Ltd Threaded fastener and method and tool for inserting same
GB1510686A (en) * 1974-12-23 1978-05-10 Illinois Tool Works Masonry anchor devices
WO1996019675A1 (en) * 1994-12-21 1996-06-27 Sfs Industrie Holding Ag Hole-shaping and thread-forming screw and process for driving in the same
GB2305703A (en) * 1995-09-27 1997-04-16 John Michael Pitts Screwthreaded fixing device
WO1997022811A1 (en) * 1995-12-15 1997-06-26 European Industrial Services Limited Threaded fastener

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1229452A (en) * 1968-01-23 1971-04-21
GB1479600A (en) * 1973-11-13 1977-07-13 British Screw Co Ltd Threaded fastener and method and tool for inserting same
GB1510686A (en) * 1974-12-23 1978-05-10 Illinois Tool Works Masonry anchor devices
WO1996019675A1 (en) * 1994-12-21 1996-06-27 Sfs Industrie Holding Ag Hole-shaping and thread-forming screw and process for driving in the same
GB2305703A (en) * 1995-09-27 1997-04-16 John Michael Pitts Screwthreaded fixing device
WO1997022811A1 (en) * 1995-12-15 1997-06-26 European Industrial Services Limited Threaded fastener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009070571A1 (en) * 2007-11-27 2009-06-04 Illinois Tool Works Inc. Threaded screw fastener

Also Published As

Publication number Publication date
GB0010746D0 (en) 2000-06-28

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)