GB512073A - Improvements in or relating to connecting members such as socket-headed screws - Google Patents

Improvements in or relating to connecting members such as socket-headed screws

Info

Publication number
GB512073A
GB512073A GB864638A GB864638A GB512073A GB 512073 A GB512073 A GB 512073A GB 864638 A GB864638 A GB 864638A GB 864638 A GB864638 A GB 864638A GB 512073 A GB512073 A GB 512073A
Authority
GB
United Kingdom
Prior art keywords
screws
head
maximum diameter
grooves
socket
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
GB864638A
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.)
Veeder Industries Inc
Original Assignee
Holo Krome 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 Holo Krome Screw Co filed Critical Holo Krome Screw Co
Priority to GB864638A priority Critical patent/GB512073A/en
Publication of GB512073A publication Critical patent/GB512073A/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

Abstract

512,073. Screws. STEVENS, A. H. (Holo- Krome Screw Corporation). March 21, 1938, No. 8646. [Class 89 (i)] The heads of connecting- members, such as socketheaded screws are formed with an upper smooth band 3 of the maximum diameter of the head and a lower knurled or fluted portion 4 of the same maximum diameter beneath the band 3 so that dirt will be prevented from entering the knurling when the head is inserted in a closely fitting aperture. In one form the knurled portion consists of parallel triangular ribs 5 separated by triangular grooves 6. In another form parallel flat-topped triangular ribs are spaced by considerably wider groves. The upper parts of the grooves 6 terminate in inclined surfaces 7. The screws are preferably formed by the method and apparatus described in Specification 401,946 and 512,072, [both in Group XXII]
GB864638A 1938-03-21 1938-03-21 Improvements in or relating to connecting members such as socket-headed screws Expired GB512073A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB864638A GB512073A (en) 1938-03-21 1938-03-21 Improvements in or relating to connecting members such as socket-headed screws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB864638A GB512073A (en) 1938-03-21 1938-03-21 Improvements in or relating to connecting members such as socket-headed screws

Publications (1)

Publication Number Publication Date
GB512073A true GB512073A (en) 1939-08-29

Family

ID=9856489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB864638A Expired GB512073A (en) 1938-03-21 1938-03-21 Improvements in or relating to connecting members such as socket-headed screws

Country Status (1)

Country Link
GB (1) GB512073A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812757A (en) * 1969-11-04 1974-05-28 Textron Inc Threaded fastener with torque control head
WO1996033050A1 (en) * 1995-04-21 1996-10-24 Juraj Pozek Method and apparatus for a theft resistant fastener

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812757A (en) * 1969-11-04 1974-05-28 Textron Inc Threaded fastener with torque control head
WO1996033050A1 (en) * 1995-04-21 1996-10-24 Juraj Pozek Method and apparatus for a theft resistant fastener
US5647253A (en) * 1995-04-21 1997-07-15 Pozek; Juraj Method and apparatus for a theft resistant fastener

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