GB454342A - Improvements in and relating to mercury switches - Google Patents
Improvements in and relating to mercury switchesInfo
- Publication number
- GB454342A GB454342A GB35371/35A GB3537135A GB454342A GB 454342 A GB454342 A GB 454342A GB 35371/35 A GB35371/35 A GB 35371/35A GB 3537135 A GB3537135 A GB 3537135A GB 454342 A GB454342 A GB 454342A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury
- switch
- members
- conducting
- glass
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H29/00—Switches having at least one liquid contact
- H01H29/20—Switches having at least one liquid contact operated by tilting contact-liquid container
- H01H29/24—Switches having at least one liquid contact operated by tilting contact-liquid container wherein contact is made and broken between liquid and liquid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/02—Apparatus or processes specially adapted for the manufacture of electric switches for mercury switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H29/00—Switches having at least one liquid contact
- H01H29/20—Switches having at least one liquid contact operated by tilting contact-liquid container
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Thermally Actuated Switches (AREA)
Abstract
454,342. Mercury and other conducting-liquid switches. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London. Dec. 20, 1935, No. 35371. Convention date, Dec. 28, 1934. [Class 38 (v)] A tiltable or rotatable conducting-liquid switch comprises two dished metallic members 1, 2 sealed together by a fillet 8 of thermo-plastic material such as glass to form an enclosure containing mercury or other liquid 5 adapted in one position of the switch to form a conducting bridge between the members 1, 2. In the form shown in Fig. 6, there is in addition a refractory member 3 through a hole 4 in which the mercury passes in the above position. When the switch is rotated about an axis a, b the mercury is split up into two portions separated by the diaphragm 3. In a modification, Figs. 3 and 4 (not shown), the members 1, 2 are separated solely by an annular member of glass and the vessel is tilted about a different axis. Fig. 1 shows a method of mounting the switch, conducting clips 37 gripping the members 1, 2, serving to lead the current to them and forming pivots for the rotation of the switch by a handle 42. Examples are given of metals, alloys and thermo-plastic materials specially suitable for the switch and of a method for manufacturing it, involving the application of suction to the enclosure while the glass fillet is in a plastic state and the introduction of the mercury and of a gas such as hydrogen through a hole 25. Instead of mercury, gallium may be used.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US454342XA | 1934-12-28 | 1934-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB454342A true GB454342A (en) | 1936-09-29 |
Family
ID=21937847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35371/35A Expired GB454342A (en) | 1934-12-28 | 1935-12-20 | Improvements in and relating to mercury switches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB454342A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2591119A (en) * | 1950-07-06 | 1952-04-01 | Biggs Justin Allen | Dental machine control |
-
1935
- 1935-12-20 GB GB35371/35A patent/GB454342A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2591119A (en) * | 1950-07-06 | 1952-04-01 | Biggs Justin Allen | Dental machine control |
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