GB627607A - Improvements in or relating to low tension sparking plugs - Google Patents
Improvements in or relating to low tension sparking plugsInfo
- Publication number
- GB627607A GB627607A GB35963/46A GB3596346A GB627607A GB 627607 A GB627607 A GB 627607A GB 35963/46 A GB35963/46 A GB 35963/46A GB 3596346 A GB3596346 A GB 3596346A GB 627607 A GB627607 A GB 627607A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- plug
- housing
- annular
- sintering
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/52—Sparking plugs characterised by a discharge along a surface
Landscapes
- Spark Plugs (AREA)
Abstract
627,607. Sparking plugs. SMITS, W. B. Dec. 4, 1946, Nos. 35963 and 35964. Convention dates, Dec. 14, 1945, and Jan. 26, 1946. [Class 7 (iv)] In a low-tension sparking-plug comprising, in combination, an outer housing, electrodes mounted in the housing and separated from one another by a member of electrically insulating or semi-conductive material on the surface of which the igniting spark is produced, there is provided a, leading-in insulator through which extends a conductor electrically connected to at least one electrode, the remaining electrodes being connected together and to the housing, the electrodes being sintered or fused to one another thus together forming a single unit or insert member which is accommodated in the housing. Mounted in the body 1 of the sparking plug, Figs. 1a, 1b, are annular-outer and central electrodes 2, 3 respectively. These electrodes 2, 3, which are stated to be of a hard heat-proof metal such as manganese steel or the material known by the Registered Trade Mark of " Stellite " or a conductive sinterable material such as steel known by the Registered Trade Mark of " Widia " or tungsten carbide, have an insulating or semiconductive separating member 4 between them. The separating member 4 may be hardened by and joined to the electrodes by sintering or fusing. In a modification, two annular-concentric electrodes are provided around the central electrode ; each annular electrode is insulated from the other and the three electrodes and two separating members are made from sinterable material ; the whole being united by sintering. This unit or insert member is then mounted in the plug body. In a further modification, Figs. 4a, 4b, an insulator or semi-conductor 13 has annular grooves formed on the inner surface in which is placed, in powder form, sinterable metal constituting electrodes 14, 15, that are joined to the member 13 by sintering. Conductors 16, 17, connect the electrodes 14, 15, to the terminal (not shown) and the plug body 18 respectively. The member 13 is provided with a packing member 19, and a heat proof packing material 20, is interposed between these parts so closing the channels through which the electrical conductors 14, 15 are taken. The shape of the electrodes is such that the distance between them is a minimum when measured along the active plug surface. The Specification as open to inspection under Sect. 91 relates also to the insert member being assembled by pressing or melting. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL627607X | 1945-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB627607A true GB627607A (en) | 1949-08-11 |
Family
ID=19788630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35963/46A Expired GB627607A (en) | 1945-12-14 | 1946-12-04 | Improvements in or relating to low tension sparking plugs |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE846485C (en) |
GB (1) | GB627607A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL105200C (en) * | 1952-10-06 | |||
DE937320C (en) * | 1952-12-19 | 1956-01-05 | Smitsvonk Nv | Electric ignition device for internal combustion engines |
DE1037202B (en) * | 1953-09-02 | 1958-08-21 | Plessey Co Ltd | Spark plug for internal combustion engines |
US2870376A (en) * | 1955-09-30 | 1959-01-20 | Bendix Aviat Corp | Electrical apparatus |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR390481A (en) * | 1907-07-29 | 1908-10-06 | Emile Moonen | Electric spark plug for internal combustion engines |
US1991369A (en) * | 1931-01-30 | 1935-02-19 | Berger Bror | Electric spark ignition |
DE570508C (en) * | 1931-06-03 | 1933-02-16 | Bror Berger | Multi-spark plug |
US2129576A (en) * | 1936-09-16 | 1938-09-06 | Frank A Gorny | Spark plug |
-
1946
- 1946-12-04 GB GB35963/46A patent/GB627607A/en not_active Expired
-
1948
- 1948-12-23 DE DE1948P0026232 patent/DE846485C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE846485C (en) | 1952-08-14 |
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