GB943575A - Thread-swaging and fastening screws - Google Patents
Thread-swaging and fastening screwsInfo
- Publication number
- GB943575A GB943575A GB602462A GB602462A GB943575A GB 943575 A GB943575 A GB 943575A GB 602462 A GB602462 A GB 602462A GB 602462 A GB602462 A GB 602462A GB 943575 A GB943575 A GB 943575A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thread
- lobes
- swaging
- pilot
- shank
- 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
Links
- 230000007423 decrease Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
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
- 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
- F16B25/0047—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 being characterised by its cross-section in the plane of the shaft axis
-
- 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)
- Forging (AREA)
- Formation And Processing Of Food Products (AREA)
Abstract
943,575. Thread-forming screws. GENERAL AMERICAN TRANSPORTATION CORPORATION. Feb. 16, 1962 [April 26, 1961], No. 6024/62. Heading B3V. A thread-swaging screw 10 comprises a shank 11 with a tapered pilot section 11a on which there is a continuous rolled thread 13, the part of the thread on the pilot 11a being partially interrupted by circumferentially spaced flutes F producing lobes L, and the thread being truncated at each flute F and having a substantially full crest at each lobe L and on the rear part 11b of the shank. One or more lobes may be formed, and the depth of the thread decreases towards the end of the pilot 11a. The lobes may have symmetrical leading and trailing swaging faces 16, 17, Fig. 2, or the leading face may subtend a greater or lesser angle than the trailing face, Figs. 2A, 2B (not shown). In a modification, Fig. 3, the flutes F3 are narrow and the lobes L3 wide.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10562961A | 1961-04-26 | 1961-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB943575A true GB943575A (en) | 1963-12-04 |
Family
ID=22306919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB602462A Expired GB943575A (en) | 1961-04-26 | 1962-02-16 | Thread-swaging and fastening screws |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB943575A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3685328A (en) * | 1970-09-04 | 1972-08-22 | Mark Richard Carpenter | Thread roll dies |
EP0024528A2 (en) * | 1979-08-22 | 1981-03-11 | Russell, Burdsall & Ward Corporation | Thread tapping form |
DE3337534A1 (en) * | 1983-10-14 | 1985-05-02 | Alfons 5758 Fröndenberg Knoche | Universal screw, tool for producing universal screws of this type, and screwdriver for universal screws of this type |
US5304024A (en) * | 1991-03-18 | 1994-04-19 | Adolf Wurth Gmbh & Co. Kg | Screw, method and rolling die for the production thereof |
DE29611864U1 (en) * | 1996-06-14 | 1996-09-12 | Chu, Yao-ching, Kangshan Chen, Kaohsiung | screw |
US6450748B1 (en) * | 2000-05-30 | 2002-09-17 | Tai-Ping Hsu | Screw having a screw thread formed with concave facets |
EP3064787A1 (en) * | 2015-03-02 | 2016-09-07 | Crown Screw Corporation | Self-tapping screw and method of manufacturing the same |
-
1962
- 1962-02-16 GB GB602462A patent/GB943575A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3685328A (en) * | 1970-09-04 | 1972-08-22 | Mark Richard Carpenter | Thread roll dies |
EP0024528A2 (en) * | 1979-08-22 | 1981-03-11 | Russell, Burdsall & Ward Corporation | Thread tapping form |
EP0024528A3 (en) * | 1979-08-22 | 1981-08-05 | Russell, Burdsall & Ward Corporation | Thread tapping form |
DE3337534A1 (en) * | 1983-10-14 | 1985-05-02 | Alfons 5758 Fröndenberg Knoche | Universal screw, tool for producing universal screws of this type, and screwdriver for universal screws of this type |
US5304024A (en) * | 1991-03-18 | 1994-04-19 | Adolf Wurth Gmbh & Co. Kg | Screw, method and rolling die for the production thereof |
DE29611864U1 (en) * | 1996-06-14 | 1996-09-12 | Chu, Yao-ching, Kangshan Chen, Kaohsiung | screw |
US6450748B1 (en) * | 2000-05-30 | 2002-09-17 | Tai-Ping Hsu | Screw having a screw thread formed with concave facets |
EP3064787A1 (en) * | 2015-03-02 | 2016-09-07 | Crown Screw Corporation | Self-tapping screw and method of manufacturing the same |
CN105937534A (en) * | 2015-03-02 | 2016-09-14 | 王冠精密工业株式会社 | Self-tapping screw and method of manufacturing the same |
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