US178309A - Improvement in wood-screws - Google Patents

Improvement in wood-screws Download PDF

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US178309A
US178309A US178309DA US178309A US 178309 A US178309 A US 178309A US 178309D A US178309D A US 178309DA US 178309 A US178309 A US 178309A
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wood
screw
screws
improvement
nick
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    • 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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0015—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially rectangular, e.g. one-slot head
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/919—Screw having driving contacts

Definitions

  • This invention consists of a wood-screw, the nick or groove in the head of which is serrated at its bottom in such manner that a screwdriver correspondingly serrated at its end or holding edge, will be kept from slipping laterally from the nick or groove aforesaid in the operation of driving the screw.
  • Figure l is-a sectional view of a screw made according to my invention.
  • Fig. 2 is a plan view of the same.
  • the shank A of the screw is threaded in the usual or in any suitable manner, and, in
  • the head B may be of any shape'ordinaril y adopted for Wood-screws, the said head B being provided with the nick a, formed in the process or operation of manut'acture by any known usual or suitable means.
  • this nick instead of having a smooth flat bottom, as is the case with the common wood-screw, has its bottom serrated or corrugated, as represented more fully in Fig. 1, the alternating notches a and ridges b which make up the serrated or corrugated bottom, as aforesaid, of the nick or groove, being transverse to the latter, so that when a screw-driver, shown in Fig.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

E. A. LELAND. WOOD-SCREW.
No.178,39. Patented June 6,1876.
L W; v 63%;. 41 Mg UN TED STATES EDWIN A. LELAND, OF NEW YORK, ASSIGNOR TO LEONARD RICHARDSON,
' OF BROOKLYN, N. Y.
IMPROVEMENT IN WOOD-SCREWS.
pecification forming part of Letters Patent No. 178,309, dated June 6, 1876; application filed February 15, 1876.
To all whom it may concern Be it known that I, EDWIN A LELAND, of the city, county, and State of New York, have invented an Improvement in Wood-Screws, of which the following is a specification:
This invention consists of a wood-screw, the nick or groove in the head of which is serrated at its bottom in such manner that a screwdriver correspondingly serrated at its end or holding edge, will be kept from slipping laterally from the nick or groove aforesaid in the operation of driving the screw.
Figure l is-a sectional view of a screw made according to my invention. Fig. 2 is a plan view of the same.
The shank A of the screw is threaded in the usual or in any suitable manner, and, in
general, and with the exception hereinafter specifically set forth, the head B may be of any shape'ordinaril y adopted for Wood-screws, the said head B being provided with the nick a, formed in the process or operation of manut'acture by any known usual or suitable means. But this nick 0,, instead of having a smooth flat bottom, as is the case with the common wood-screw, has its bottom serrated or corrugated, as represented more fully in Fig. 1, the alternating notches a and ridges b which make up the serrated or corrugated bottom, as aforesaid, of the nick or groove, being transverse to the latter, so that when a screw-driver, shown in Fig. '1, provided at its edge or holding end with alternating notches and projections, (in other Words, made serrated,) is inserted in the nick a inthe operation of driving the screw, the projections of the serrated edge of the driver will alternate with The wood-screw, having the bottom of its Y nick or groove a serrated or corrugated, substantially as and for the purpose set forth.
EDWIN A. LELAND.
Witnesses:
- JAMES A. WHITNEY,
THOMAS C. CONNOLLY.
PATENT OEEIcE.
US178309D Improvement in wood-screws Expired - Lifetime US178309A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090145270A1 (en) * 2007-12-05 2009-06-11 Heesch Gary V Torque reducing and stabilizing screwdrivers and slotted threaded fasteners and related methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090145270A1 (en) * 2007-12-05 2009-06-11 Heesch Gary V Torque reducing and stabilizing screwdrivers and slotted threaded fasteners and related methods

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