GB556464A - Improvements in or relating to variable electric resistances - Google Patents
Improvements in or relating to variable electric resistancesInfo
- Publication number
- GB556464A GB556464A GB2762/42A GB276242A GB556464A GB 556464 A GB556464 A GB 556464A GB 2762/42 A GB2762/42 A GB 2762/42A GB 276242 A GB276242 A GB 276242A GB 556464 A GB556464 A GB 556464A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lid
- contact
- strip
- spindle
- rotor head
- 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
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/30—Adjustable resistors the contact sliding along resistive element
- H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
Abstract
556,464. Variable resistances. MORGAN CRUCIBLE CO., Ltd., and MILLER, L. W. March 2, 1942, No. 2762. [Class 37] A variable resistance suitable for volume control in radio reception on aircraft is made as small as possible and capable of withstanding extreme conditions of humidity and temperature. The case consists of a metal body 1 having a bearing bush 2 for the operating spindle 3 sealed in the bottom and a lid 5 of moulded insulating material having on the inside a segmental resistance strip 6 encircling an inner contact 7 and on the outside terminal tags 8, 9 connected to the ends of the strip 6 and a third terminal tag (not shown) connected to the contact 7. The body 1 and lid 5 are sealed by a ribbon of thermoplastic or other jointing material in a groove 12 which is melted, after assembly, to form a hermetic seal between the lid and the body. The lid is further secured in position by bending tags 13 on the body over the top of the lid. The terminals are stamped out of sheet metal and formed into bucket-like pieces 14 with upstanding flexible tags. They are mounted at the base in sockets in a box 16 on the lid 5 and secured by rivets passing through the lid. The bearing bush 2 is sealed into the bottom of the body 1 by moulded synthetic plastic material 21 which is formed with an annular channel 22 to accommodate the rim 23 of the lid with the interposition of a film of jointing material. A recess is formed in the layer 21 to engage a projection 25 in the lid to ensure correct angular relationship between the body and the lid. This projection may also serve as a stop to limit the travel in both directions of a rotor head 4 carried by the spindle 3. The sliding contact comprises a spring strip 27 pivoted in the rotor head so that one end bears on the resistance strip 6 and the other bears on the contact disc 7, The strip 27 is shaped as shown with projections 28 engaging recesses in walls 41 projecting from the rotor head 4. The head 4 carries a boss 29 which passes through the central aperture of the contact 27 and abuts against the centre of the contact 7 to serve as a spacer. The bottom of the rotor head 4 has a short boss 30 surrounding the top of the spindle to bear normally on the top of the bush 2 when the rotor contacts are bearing with the desired spring pressure on the contacts in the lid. An insert 31 may be moulded into the head 4 and formed with a central hole into which the reduced and splined end 32 of the spindle 3 may be forced and held frictionally so as to enable a standard rotor head to be employed with different spindles.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2762/42A GB556464A (en) | 1942-03-02 | 1942-03-02 | Improvements in or relating to variable electric resistances |
US510193A US2358991A (en) | 1942-03-02 | 1943-11-13 | Variable electric resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2762/42A GB556464A (en) | 1942-03-02 | 1942-03-02 | Improvements in or relating to variable electric resistances |
Publications (1)
Publication Number | Publication Date |
---|---|
GB556464A true GB556464A (en) | 1943-10-06 |
Family
ID=9745419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2762/42A Expired GB556464A (en) | 1942-03-02 | 1942-03-02 | Improvements in or relating to variable electric resistances |
Country Status (2)
Country | Link |
---|---|
US (1) | US2358991A (en) |
GB (1) | GB556464A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1097532B (en) * | 1956-02-16 | 1961-01-19 | Plessey Co Ltd | Rotation resistance |
DE1147666B (en) * | 1959-10-09 | 1963-04-25 | Metal Products Ltd Ab | Rotation resistance |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124775A (en) * | 1964-03-10 | Hamelberg | ||
US2458314A (en) * | 1945-01-18 | 1949-01-04 | Dubilier Condenser Co 1925 Ltd | Variable electrical resistor |
US2561116A (en) * | 1947-08-07 | 1951-07-17 | Hof Zygmunt | Variable resistor |
US2594493A (en) * | 1948-07-28 | 1952-04-29 | Mallory & Co Inc P R | Circuit controlling device |
US2484667A (en) * | 1949-03-17 | 1949-10-11 | Chicago Telephone Supply Corp | Driver for variable resistors |
US2628298A (en) * | 1951-01-04 | 1953-02-10 | Chicago Telephone Supply Corp | Variable resistance device |
US2798139A (en) * | 1953-10-14 | 1957-07-02 | Allen Bradley Co | Resistance apparatus |
US2970244A (en) * | 1956-01-11 | 1961-01-31 | Sprague Electric Co | Variable resistor |
US2909749A (en) * | 1957-10-17 | 1959-10-20 | Chicago Telephone Supply Corp | Electrical control instrumentality |
US3018459A (en) * | 1960-06-07 | 1962-01-23 | Bourns Inc | Variable resistor |
US3188595A (en) * | 1962-09-28 | 1965-06-08 | Weston Instruments Inc | Adjustable resistor |
US3237140A (en) * | 1963-05-20 | 1966-02-22 | Cts Corp | Variable resistance control |
US3377606A (en) * | 1964-03-02 | 1968-04-09 | Spectrol Electronics Corp | Potentiometer apparatus |
US3266004A (en) * | 1965-05-20 | 1966-08-09 | Fox | Potentiometer |
US3387247A (en) * | 1966-02-28 | 1968-06-04 | Beckman Instruments Inc | Housing and base construction for variable resistance device |
US3413588A (en) * | 1967-10-11 | 1968-11-26 | Bourns Inc | Single-turn rotary variable resistor |
DE2656097A1 (en) * | 1975-12-12 | 1977-06-23 | Plessey Handel Investment Ag | POTENTIOMETER |
JPS586281B2 (en) * | 1978-02-20 | 1983-02-03 | 松下電器産業株式会社 | Manufacturing method of variable resistor |
-
1942
- 1942-03-02 GB GB2762/42A patent/GB556464A/en not_active Expired
-
1943
- 1943-11-13 US US510193A patent/US2358991A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1097532B (en) * | 1956-02-16 | 1961-01-19 | Plessey Co Ltd | Rotation resistance |
DE1147666B (en) * | 1959-10-09 | 1963-04-25 | Metal Products Ltd Ab | Rotation resistance |
Also Published As
Publication number | Publication date |
---|---|
US2358991A (en) | 1944-09-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB556464A (en) | Improvements in or relating to variable electric resistances | |
US2260048A (en) | Fastening arrangement | |
GB1456861A (en) | Electromagnetic relay | |
US2409483A (en) | Electric switch | |
GB1417264A (en) | Means for holding and electrically-contacting thermally-loaded ceramic resistors | |
US2974299A (en) | Miniature variable resistance device | |
US2142107A (en) | Electric switch | |
GB1198043A (en) | Rotary Switch with Indexing Mechanism | |
GB984263A (en) | Electric switch construction | |
US3629780A (en) | Variable resistance control and switch with common operating member | |
US2484667A (en) | Driver for variable resistors | |
US2338481A (en) | Electric switch for doorjambs | |
US2406503A (en) | Variable electrical resistance | |
GB942983A (en) | Miniature potentiometer | |
US3124778A (en) | youngbeck | |
US2917720A (en) | Hermetically sealed variable resistor | |
US2594493A (en) | Circuit controlling device | |
US2628298A (en) | Variable resistance device | |
US2023382A (en) | Interposed disk rheostat | |
US2145953A (en) | Variable resistance device | |
GB554578A (en) | Improvements in and connected with holders for electric fuses | |
US2414470A (en) | Circuit control device | |
US1920217A (en) | Rheostat | |
GB866341A (en) | Improvements in or relating to potentiometers | |
GB845236A (en) | Improvements in or relating to electric fans |