GB581942A - Means of uniting a screw with a driver - Google Patents

Means of uniting a screw with a driver

Info

Publication number
GB581942A
GB581942A GB771844A GB771844A GB581942A GB 581942 A GB581942 A GB 581942A GB 771844 A GB771844 A GB 771844A GB 771844 A GB771844 A GB 771844A GB 581942 A GB581942 A GB 581942A
Authority
GB
United Kingdom
Prior art keywords
screw
convergence
grooves
angle
uniting
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
Application number
GB771844A
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.)
Phillips Screw Co
Original Assignee
Phillips Screw Co
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 Phillips Screw Co filed Critical Phillips Screw Co
Priority to GB771844A priority Critical patent/GB581942A/en
Publication of GB581942A publication Critical patent/GB581942A/en
Expired 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
    • 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
    • F16B23/0023—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 cross-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Connection Of Plates (AREA)

Abstract

581,942. Screws and screwdrivers. DEHN, F. B. (Phillips Screw Co.). April 25, 1944, No. 7718. [Class 89 (ii)] [Also in Group XXIII] The conical socket in a screw head 5 has alternate straight tapering ridges and grooves and the end of the screwdriver 1 has corresponding ribs and plates 2, 3, the angle of convergence of the opposite edges of the ribs being slightly more acute than the angle of convergence of the opposite side walls of the grooves to produce a binding effect between the engaging portions. Specification 446,714 is referred to.
GB771844A 1944-04-25 1944-04-25 Means of uniting a screw with a driver Expired GB581942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB771844A GB581942A (en) 1944-04-25 1944-04-25 Means of uniting a screw with a driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB771844A GB581942A (en) 1944-04-25 1944-04-25 Means of uniting a screw with a driver

Publications (1)

Publication Number Publication Date
GB581942A true GB581942A (en) 1946-10-30

Family

ID=9838421

Family Applications (1)

Application Number Title Priority Date Filing Date
GB771844A Expired GB581942A (en) 1944-04-25 1944-04-25 Means of uniting a screw with a driver

Country Status (1)

Country Link
GB (1) GB581942A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684526A (en) * 1951-07-06 1954-07-27 Hoover John Dean Method for backing off broken studs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684526A (en) * 1951-07-06 1954-07-27 Hoover John Dean Method for backing off broken studs

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