GB485974A - Improved method of and means for sealing instruments and apparatus against unauthorised interference - Google Patents
Improved method of and means for sealing instruments and apparatus against unauthorised interferenceInfo
- Publication number
- GB485974A GB485974A GB2619737A GB2619737A GB485974A GB 485974 A GB485974 A GB 485974A GB 2619737 A GB2619737 A GB 2619737A GB 2619737 A GB2619737 A GB 2619737A GB 485974 A GB485974 A GB 485974A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screw
- improved method
- head
- apparatus against
- against unauthorised
- 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
- 238000007789 sealing Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 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
- F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
- F16B41/005—Measures against unauthorised operation of bolts, nuts or pins
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
- Connection Of Plates (AREA)
Abstract
485,974. Seals for screws and bolts. COVENTRY GAUGE & TOOL CO., Ltd., and HARLEY, S. J. Sept. 28, 1937, No. 26197. [Class 89 (i)] [Also in Group XV] The seal for a screw is formed of a ductile material which is applied under pressure to the screw head to key into a recess or groove formed therein. A screw a is formed with a head b having an undercut surface slightly less in diameter than the plain flanged surface el, and, for sealing this in position, there is provided a lead washer d, having a re-entrant head d<1>. When put in position and hammered into the recess, the lead flows into the space f, and seals the screw.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2619737A GB485974A (en) | 1937-09-28 | 1937-09-28 | Improved method of and means for sealing instruments and apparatus against unauthorised interference |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2619737A GB485974A (en) | 1937-09-28 | 1937-09-28 | Improved method of and means for sealing instruments and apparatus against unauthorised interference |
Publications (1)
Publication Number | Publication Date |
---|---|
GB485974A true GB485974A (en) | 1938-05-27 |
Family
ID=10239869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2619737A Expired GB485974A (en) | 1937-09-28 | 1937-09-28 | Improved method of and means for sealing instruments and apparatus against unauthorised interference |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB485974A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2526209A1 (en) * | 1982-04-30 | 1983-11-04 | Tdk Corp | MAGNETIC TAPE CASSETTE |
GB2129773A (en) * | 1982-09-28 | 1984-05-23 | Shape Inc | Tamper proof video cassette |
GB2530066A (en) * | 2014-09-11 | 2016-03-16 | Codex Digital | Tamper-proof cover |
US9995332B2 (en) | 2014-02-22 | 2018-06-12 | Audi Ag | Fastening device for tamper-proof fastening, and component arrangement |
-
1937
- 1937-09-28 GB GB2619737A patent/GB485974A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2526209A1 (en) * | 1982-04-30 | 1983-11-04 | Tdk Corp | MAGNETIC TAPE CASSETTE |
GB2119753A (en) * | 1982-04-30 | 1983-11-23 | Tdk Corp | Tape cassette |
GB2129773A (en) * | 1982-09-28 | 1984-05-23 | Shape Inc | Tamper proof video cassette |
US9995332B2 (en) | 2014-02-22 | 2018-06-12 | Audi Ag | Fastening device for tamper-proof fastening, and component arrangement |
GB2530066A (en) * | 2014-09-11 | 2016-03-16 | Codex Digital | Tamper-proof cover |
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