US379200A - Screw - Google Patents

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US379200A
US379200A US379200DA US379200A US 379200 A US379200 A US 379200A US 379200D A US379200D A US 379200DA US 379200 A US379200 A US 379200A
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United States
Prior art keywords
screw
nick
head
screws
shank
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Expired - Lifetime
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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 relates to improvements in screws; and it consists in an improvement in the nick of the head so as to prevent the screwdriver from accidentally slipping out of said nick during the operation of turning the screw in or out of the materialinto which it is to be secured.
  • FIG. 1 represents a side elevation of a screw made according to my invention.
  • Fig. 2 represents a central longitudinal section of the head and shank of the same.
  • Figs. 3 and 4 represent plan views of the screw-heads, showing the i mproved nicks therein; and
  • Figs. 5 and 6 represent end views. of screw-drivers used in driving the improved screws.
  • a is the screw-shank, having a machine or wood thread out on it, as usual.
  • b is the head, as usual, in the upper end of the shank a, which head may be made of any of the ordinary formsthat is, cylindrical, semispherical, or tapering-accordingto the uses for which the screw is intended, and I wish to state that I do not desire to confine myself to any particular shape of the head, as this may be varied according to circumstances.
  • nick in the head which is made of the usual depth, but instead of being straight, as is common in ordinary screws, it is made serpentine or zigzag from end to end, as shown, respectively, in Figs. 3 and 4.
  • WVith such improved nick I use a screw-driver the lower end of which is made serpentine or zigzag shaped to correspond with the nick in the screw-heads, as shown in Figs. 5 and 6, and by this arrangement the liability of thescrew driver slipping accidentally out of the nick while the screw is being driven or removed is entirely obviated.
  • the bottom of the nick c is on .a plane at a right angle to the axis of the screw without

Description

(No Mode1 J. P. A. HANLON,
SCREW. No. 379,200. Patented Mar. 6,1888.
llllll UNITED STATES PATENT OFFICE.
JOSEPH P. A. HANLON, OF SOMERVILLE, ASSIGNOR OF ONE-SEVENTH TO CHARLES A. DAVID, OF LYNN, MASSACHUSETTS.
SCREW.
SPECIFICATION forming part of Letters Patent No. 3791200, dated March 6, 1888.
Application filed November 18, 1887. Serial No. 255,458. (No model.)'
To all whom, it may concern:
Be it known that I, J OSEPH P. AJHANLON, a citizen of Great Britain, and a resident of Somerville, in the county of Middlesex and State of Massachusetts, haveinvented new and useful Improvements in Screws, of which the following, taken in connection with the accompanying drawings, is a specification.
This invention relates to improvements in screws; and it consists in an improvement in the nick of the head so as to prevent the screwdriver from accidentally slipping out of said nick during the operation of turning the screw in or out of the materialinto which it is to be secured.
The invention is carried out as follows, reference being had to the accompanying drawings, wherein- Figure 1 represents a side elevation of a screw made according to my invention. Fig. 2 represents a central longitudinal section of the head and shank of the same. Figs. 3 and 4 represent plan views of the screw-heads, showing the i mproved nicks therein; and Figs. 5 and 6 represent end views. of screw-drivers used in driving the improved screws.
Similar letters refer to similar parts wherever they occur on the different parts of the drawings.
a is the screw-shank, having a machine or wood thread out on it, as usual.
b is the head, as usual, in the upper end of the shank a, which head may be made of any of the ordinary formsthat is, cylindrical, semispherical, or tapering-accordingto the uses for which the screw is intended, and I wish to state that I do not desire to confine myself to any particular shape of the head, as this may be varied according to circumstances.
0 in the drawings is the nick in the head, which is made of the usual depth, but instead of being straight, as is common in ordinary screws, it is made serpentine or zigzag from end to end, as shown, respectively, in Figs. 3 and 4. WVith such improved nick I use a screw-driver the lower end of which is made serpentine or zigzag shaped to correspond with the nick in the screw-heads, as shown in Figs. 5 and 6, and by this arrangement the liability of thescrew driver slipping accidentally out of the nick while the screw is being driven or removed is entirely obviated.
The bottom of the nick c is on .a plane at a right angle to the axis of the screw without
US379200D Screw Expired - Lifetime US379200A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3236275A (en) * 1962-10-24 1966-02-22 Robert D Smith Screw driver with an h-shaped drawing bit
US3808937A (en) * 1972-04-19 1974-05-07 J Roehrig Screw head
US4025140A (en) * 1974-08-02 1977-05-24 Tula Machine Co., Inc. Locking device for the prongs of an electrical plug
US4037514A (en) * 1976-02-23 1977-07-26 Juan Andres Lliteras High torque fastener head
US7013767B1 (en) * 2004-09-03 2006-03-21 Seim Shannon R Screwdriver/screw unit
WO2006097891A1 (en) * 2005-03-14 2006-09-21 Romain Gauthier Reversible fixing element

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3236275A (en) * 1962-10-24 1966-02-22 Robert D Smith Screw driver with an h-shaped drawing bit
US3808937A (en) * 1972-04-19 1974-05-07 J Roehrig Screw head
US4025140A (en) * 1974-08-02 1977-05-24 Tula Machine Co., Inc. Locking device for the prongs of an electrical plug
US4037514A (en) * 1976-02-23 1977-07-26 Juan Andres Lliteras High torque fastener head
US7013767B1 (en) * 2004-09-03 2006-03-21 Seim Shannon R Screwdriver/screw unit
WO2006097891A1 (en) * 2005-03-14 2006-09-21 Romain Gauthier Reversible fixing element

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