US74489A - Improvement in wood-soeews - Google Patents

Improvement in wood-soeews Download PDF

Info

Publication number
US74489A
US74489A US74489DA US74489A US 74489 A US74489 A US 74489A US 74489D A US74489D A US 74489DA US 74489 A US74489 A US 74489A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
screw
wood
thread
point
entering
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
Application number
Publication date
Grant date

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B25/00Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042Screws 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
    • F16B25/0047Screws 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 ridge being characterised by its cross-section in the plane of the shaft axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B25/00Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001Screws 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
    • F16B25/0015Screws 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B25/00Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042Screws 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
    • F16B25/0057Screws 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

Description

@ni-ten tetra attent ffice.

JASON A. BIDWELL, OF EAST BOSTON, MASSACHUSETTS.

Letters .Patent No. 74,489, dated .February I8, 1868.

IMPROVEMENT IN WOOD-SGRBWS.

TO ALL WHOM IT MAY CONGERN:

Be it known that I,'JAsoN.A. BIDWELL, of East Boston, Su'olk county, Stato of Massachusetts, have invented an Improved Wood-Screw; and I do hereby declare the following to be a full, clear, and exact descrip. tion thereof, reference being had to the accompanying drawings, making part of this specification, in which- Figure 1 is a side view of the improved screwt Figure 2 is a diametrical section through the screw.

Figure 3 is an end view. 4 V

Figure 4 is an enlarged sectional view of a portion `of the screw, showingy clearly the form of the thread.

Similar letters of reference indicate corresponding parts in the several gnres.

The object of this invention is to construct a wood-screw which will penetrate wood more readily, and have a firmer hold than wood-screws hitherto made. v

The nature of my invention consists in a. wood-screw having a core, which tapers from the shanl: to the point, and a thread which does not taper, except at the entering-point ofthe screw, said thread being constructed with double convex sides, so as to increase the bearing-surface, and'add g'rcater strength to it, as will be hereinafter described. i V

vTo enable others skilled in the art to understand my invention, I will describe its construction and operation.

In the accompanying drawings,a represents the head of the scre\\,'\vhich may be notched or slotted, as

shown, or it may be perforated; and b represents the cylindrical shank or neck of the screw, which extends from the head to the point, c, where the screw-thread commences. The thread commences at'the.,circunnfer` V ence of the shank b, and gradui'ally increases `in depth, until the full depth ofthe screw isohtained, thereby producing the conical core e, which maybe more or less tapering, as desired. The core g, upon which the full thread d is formed, commences at the termination of the conc-shoulder e, and continues to the entering-pointf, with a gradual taper, as shownin gs. 1 and 2. The'thr'ead d cl is of the same diameter as ,the shank b, from the point c to the point t, when it is gradually reduced, so as to form the ventering-point. It will be seen that the portion d of the thread of my screw abruptly increases in depth upon the conical shoulder e', and then gradually increases in depth from this point to the reduced' entering-cud. Instead of'maliing the surfaces of the thread at, as in some wood-screws hitherto, vI make these surfaces convex or rounding, as shown in figs. 2 and 4, so as to increase their thickness, and consequently increase the strength ofthe thread. The case of the thread also increases in thickness as it approaches the entering-point of the screw, so that it shall not have its strength diminished as it is increased in depth.A V

It will be seen from the above description and :iccompanying drawings, that no part of the core of inv4 improved screw is cylindrical, but that it forms a conical wedge, whichwill enter wood without driving the fibres in advance of it. The fibres of the wood will'be spread out laterally, and compacted between and outside of the thread, while the latter will wind its way down into the wood, andseeue n. firm `h olcl therein.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, 'is- As a new and improved article of manufacture, a wood-screw, having' its core tapering from its shank toits.'

entering-point, and provided with a thread of uniform diameter, as herein described.

JASON A. BIDWELL.

Witnesses:

.WiL B. W. HALLETT,

STEPHEN A. COOKE, Jr.

US74489A Improvement in wood-soeews Expired - Lifetime US74489A (en)

Publications (1)

Publication Number Publication Date
US74489A true US74489A (en) 1868-02-18

Family

ID=2143997

Family Applications (1)

Application Number Title Priority Date Filing Date
US74489A Expired - Lifetime US74489A (en) Improvement in wood-soeews

Country Status (1)

Country Link
US (1) US74489A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746379A (en) * 1952-11-10 1956-05-22 Mabel V Covington Fruit juice extractor
US2787186A (en) * 1952-03-28 1957-04-02 Brogiotti Antonin Screw spike with compression producing thread form
US5100274A (en) * 1990-10-29 1992-03-31 Illinois Tool Works Inc. Roofing fastener and improved screw therefor
US5226766A (en) * 1990-11-27 1993-07-13 Stuart Surgical Bone screw with improved threads
US5242447A (en) * 1992-02-06 1993-09-07 Howmedica Inc. Pin with tapered root diameter
US5492442A (en) * 1990-11-27 1996-02-20 National Medical Specialty, Inc. Bone screw with improved threads
EP1001178A3 (en) * 1998-11-13 2001-12-05 TOGE-Dübel A. Gerhard KG Screw for gas concrete
US6620163B1 (en) * 1997-02-11 2003-09-16 Gary K. Michelson Anterior cervical plating system and bone screw
US20040106950A1 (en) * 2002-09-12 2004-06-03 Grafton R. Donald Fully threaded suture anchor with insert-molded suture
US20040220572A1 (en) * 1997-02-11 2004-11-04 Michelson Gary K Skeletal plating system
US20060036249A1 (en) * 2004-08-12 2006-02-16 Baynham Bret O Bone plate with screw lock
US20060149253A1 (en) * 2005-01-06 2006-07-06 Doubler Robert L Spinal plate with internal screw locks
US20060149255A1 (en) * 2005-01-06 2006-07-06 Doubler Robert L Spinal implant kit
US20060167456A1 (en) * 2004-12-21 2006-07-27 Packaging Service Corporation Of Kentucky Cervical plate system
US20070009340A1 (en) * 2005-07-11 2007-01-11 Van Cor Dale E Conic threaded fastener and fastener system
US7468069B2 (en) 2004-02-10 2008-12-23 Atlas Spine, Inc. Static anterior cervical plate
US20090220914A1 (en) * 2008-02-28 2009-09-03 Dental- Li Uri Consulting 2007 Ltd. Dental implant and a method of implantation thereof
WO2015003906A1 (en) * 2013-07-08 2015-01-15 Adolf Würth GmbH & Co. KG Wood screw with intermediate thread sections tapering to the front
US9521999B2 (en) 2005-09-13 2016-12-20 Arthrex, Inc. Fully-threaded bioabsorbable suture anchor
US9526493B2 (en) 1999-02-02 2016-12-27 Arthrex, Inc. Suture anchor with insert-molded rigid member
US9622739B2 (en) 2004-04-06 2017-04-18 Arthrex, Inc. Suture anchor

Cited By (47)

* Cited by examiner, † Cited by third party
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
US2746379A (en) * 1952-11-10 1956-05-22 Mabel V Covington Fruit juice extractor
US5417533A (en) * 1990-07-13 1995-05-23 National Medical Specialty, Inc. Bone screw with improved threads
US5100274A (en) * 1990-10-29 1992-03-31 Illinois Tool Works Inc. Roofing fastener and improved screw therefor
US5226766A (en) * 1990-11-27 1993-07-13 Stuart Surgical Bone screw with improved threads
US5492442A (en) * 1990-11-27 1996-02-20 National Medical Specialty, Inc. Bone screw with improved threads
US5242447A (en) * 1992-02-06 1993-09-07 Howmedica Inc. Pin with tapered root diameter
US7651497B2 (en) 1997-02-11 2010-01-26 Warsaw Orthopedic, Inc. Segmentable plate with locking element
US6620163B1 (en) * 1997-02-11 2003-09-16 Gary K. Michelson Anterior cervical plating system and bone screw
US20030181912A1 (en) * 1997-02-11 2003-09-25 Michelson Gary K. Anterior cervical plating system and bone screw
US20030191471A1 (en) * 1997-02-11 2003-10-09 Michelson Gary K. Multilock anterior cervical plating system
US20030191472A1 (en) * 1997-02-11 2003-10-09 Michelson Gary K. Multilock anterior cervical plating system
US8048075B2 (en) 1997-02-11 2011-11-01 Warsaw Orthopedic, Inc. Orthopedic implant with locking element
US20040220572A1 (en) * 1997-02-11 2004-11-04 Michelson Gary K Skeletal plating system
US20040236334A1 (en) * 1997-02-11 2004-11-25 Michelson Gary K. Plating apparatus and system having a retaining element
US20040236335A1 (en) * 1997-02-11 2004-11-25 Michelson Gary K. Plate apparatus for the spine
US20050038436A1 (en) * 1997-02-11 2005-02-17 Michelson Gary K. System and method for stabilizing a portion of the spine
US8480717B2 (en) 1997-02-11 2013-07-09 Warsaw Orthopedic, Inc. Orthopedic implant with locking element
US6926718B1 (en) 1997-02-11 2005-08-09 Gary K. Michelson Multilock anterior cervical plating system
US20050187552A1 (en) * 1997-02-11 2005-08-25 Michelson Gary K. Multilock anterior cervical plating system
US6936051B2 (en) 1997-02-11 2005-08-30 Gary K. Michelson Multilock anterior cervical plating system
US6936050B2 (en) 1997-02-11 2005-08-30 Gary K. Michelson Multilock anterior cervical plating system
US6969390B2 (en) 1997-02-11 2005-11-29 Michelson Gary K Anterior cervical plating system and bone screw
US7704255B2 (en) 1997-02-11 2010-04-27 Warsaw Orthopedic, Inc. Threadless multi-lock anterior cervical plating system
US8123788B2 (en) 1997-02-11 2012-02-28 Warsaw Orthopedic, Inc. Plating system having retaining member that permits movement of at least one bone fastener
US8641743B2 (en) 1997-02-11 2014-02-04 Warsaw Orthopedic, Inc. Orthopedic implant with locking element
US20050059971A1 (en) * 1997-02-11 2005-03-17 Michelson Gary K. Plating system having retaining member that permits movement of at least one bone fastener
US8262708B2 (en) 1997-02-11 2012-09-11 Warsaw Orthopedic, Inc. Single-lock plating system
US7625381B2 (en) 1997-02-11 2009-12-01 Warsaw Orthopedic, Inc. System and method for stabilizing a portion of the spine
EP1001178A3 (en) * 1998-11-13 2001-12-05 TOGE-Dübel A. Gerhard KG Screw for gas concrete
US9526493B2 (en) 1999-02-02 2016-12-27 Arthrex, Inc. Suture anchor with insert-molded rigid member
US20040106950A1 (en) * 2002-09-12 2004-06-03 Grafton R. Donald Fully threaded suture anchor with insert-molded suture
US7883528B2 (en) * 2002-09-12 2011-02-08 Arthrex, Inc. Fully threaded suture anchor with insert-molded suture
US7468069B2 (en) 2004-02-10 2008-12-23 Atlas Spine, Inc. Static anterior cervical plate
US9622739B2 (en) 2004-04-06 2017-04-18 Arthrex, Inc. Suture anchor
US7288095B2 (en) 2004-08-12 2007-10-30 Atlas Spine, Inc. Bone plate with screw lock
US20060036249A1 (en) * 2004-08-12 2006-02-16 Baynham Bret O Bone plate with screw lock
US20060167456A1 (en) * 2004-12-21 2006-07-27 Packaging Service Corporation Of Kentucky Cervical plate system
US7736380B2 (en) 2004-12-21 2010-06-15 Rhausler, Inc. Cervical plate system
US7438715B2 (en) 2005-01-06 2008-10-21 Spinal Llc Spinal implant kit
US7322984B2 (en) 2005-01-06 2008-01-29 Spinal, Llc Spinal plate with internal screw locks
US20060149255A1 (en) * 2005-01-06 2006-07-06 Doubler Robert L Spinal implant kit
US20060149253A1 (en) * 2005-01-06 2006-07-06 Doubler Robert L Spinal plate with internal screw locks
US20070009340A1 (en) * 2005-07-11 2007-01-11 Van Cor Dale E Conic threaded fastener and fastener system
US9521999B2 (en) 2005-09-13 2016-12-20 Arthrex, Inc. Fully-threaded bioabsorbable suture anchor
US20090220914A1 (en) * 2008-02-28 2009-09-03 Dental- Li Uri Consulting 2007 Ltd. Dental implant and a method of implantation thereof
WO2015003906A1 (en) * 2013-07-08 2015-01-15 Adolf Würth GmbH & Co. KG Wood screw with intermediate thread sections tapering to the front

Similar Documents

Publication Publication Date Title
US4527932A (en) Self-tapping screw
US1266529A (en) Method of attaching handle-shafts tol golf-clues or like articles.
US1677269A (en) Nonremovable nut
US350209A (en) Screw hook and eye
US30985A (en) Thomas l
US1159420A (en) Wall-fastening.
US66585A (en) haeyey
US146023A (en) Improvement in wood-screws
US824983A (en) Screw.
US1374713A (en) Reinforcing or stay bolt for tool-handles
US556082A (en) Julius boeddinghaus
US1444618A (en) Driven-headed fastening
US1891895A (en) Drive screw
US430236A (en) Island
US1364182A (en) Reinforcing-bar for concrete
US1986061A (en) Lock thread for screw caps and the like
US65651A (en) davies
US3018684A (en) Wire coil thread connection in soft materials
US867552A (en) Means for fastening tires to wheel-rims.
US2558379A (en) Self-locking fastener
US2005672A (en) Self-tapping screw
US362548A (en) Obeblin smith
US449887A (en) Island
US3002A (en) Liqtjob-gatb
US1585907A (en) Golf club