FR1334837A - Improvements to screws - Google Patents

Improvements to screws

Info

Publication number
FR1334837A
FR1334837A FR910948A FR910948A FR1334837A FR 1334837 A FR1334837 A FR 1334837A FR 910948 A FR910948 A FR 910948A FR 910948 A FR910948 A FR 910948A FR 1334837 A FR1334837 A FR 1334837A
Authority
FR
France
Prior art keywords
screws
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
FR910948A
Other languages
French (fr)
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.)
Guest Keen and Nettelfolds Mitlands Ltd
Original Assignee
Guest Keen and Nettelfolds Mitlands Ltd
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
Priority claimed from GB35712/61A external-priority patent/GB942417A/en
Application filed by Guest Keen and Nettelfolds Mitlands Ltd filed Critical Guest Keen and Nettelfolds Mitlands Ltd
Priority to FR910948A priority Critical patent/FR1334837A/en
Application granted granted Critical
Publication of FR1334837A publication Critical patent/FR1334837A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws 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
    • F16B25/0021—Screws 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 metal, e.g. sheet-metal or aluminium
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws 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
    • F16B25/0052—Screws 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 having indentations, notches or the like in order to improve the cutting behaviour

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
FR910948A 1961-10-04 1962-10-01 Improvements to screws Expired FR1334837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR910948A FR1334837A (en) 1961-10-04 1962-10-01 Improvements to screws

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB35712/61A GB942417A (en) 1961-10-04 1961-10-04 Improvements relating to screws
FR910948A FR1334837A (en) 1961-10-04 1962-10-01 Improvements to screws

Publications (1)

Publication Number Publication Date
FR1334837A true FR1334837A (en) 1963-08-09

Family

ID=26197762

Family Applications (1)

Application Number Title Priority Date Filing Date
FR910948A Expired FR1334837A (en) 1961-10-04 1962-10-01 Improvements to screws

Country Status (1)

Country Link
FR (1) FR1334837A (en)

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