GB817122A - Improvements in or relating to electrical thermally responsive relays - Google Patents
Improvements in or relating to electrical thermally responsive relaysInfo
- Publication number
- GB817122A GB817122A GB26521/57A GB2652157A GB817122A GB 817122 A GB817122 A GB 817122A GB 26521/57 A GB26521/57 A GB 26521/57A GB 2652157 A GB2652157 A GB 2652157A GB 817122 A GB817122 A GB 817122A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- blade
- actuator
- contact
- plate
- 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
- H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
- H01H43/30—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action
- H01H43/301—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material
- H01H43/302—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material of solid bodies
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Thermally Actuated Switches (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
817,122. Temperature-responsive actuating-elements. BRYANT ELECTRIC CO. Aug. 22, 1957 [Aug. 29, 1956], No. 26521/57. Class 64(2) [Also in Group XXXVII] A thermal relay has a U-shaped framework of insulating material comprising two side legs 2 and 4 and a base portion 6 carrying four plug pins 50. Resistance wire 116 is wound around the base portion and an insulating member 92 pivoted at 98 in recesses in a metallic contact actuator 82, itself pivoted at one end in the top of leg 2 and guided by a slot in the top of leg 4. The wire 116 may be secured in place by being partially embedded in an asbestos member 118 or by coating members 92 and 118 with varnish or adhesive. The wire 116 is tensioned by a spring blade 100 bowed between the actuator 82 and the free end of a metal plate 64 connected to one plug pin 50. The blade 100 carries a contact 102 co-operating with a fixed contact 78 mounted on an extension from a plug pin 50. The other two plug pins 50 act as terminals for the wire 116. Adjustment of the moving contact 102 is provided by a screw (Fig. 2, not shown) engaging an indentation 68 in the free end of the plate 64, to lift or lower the latter and thereby vary the initial amount of bow in the blade 100. Side cover plates 126 fit in grooves in the legs 2 and 4 and are retained by tabs 128 on a top cover 120. The side covers 126 may have perforations 130 or may be omitted so that the relay may respond to rate of flow or change in temperature of a stream of fluid. In a modification (Fig. 8, not shown) the spring blade 100 is mounted centrally on the plate 64 and the actuator 82, the latter being loosely guided at each end, and the contacts are arranged to break instead of make as the wire 116 expands. The casing may be sealed and evacuated.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US817122XA | 1956-08-29 | 1956-08-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB817122A true GB817122A (en) | 1959-07-22 |
Family
ID=22165900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26521/57A Expired GB817122A (en) | 1956-08-29 | 1957-08-22 | Improvements in or relating to electrical thermally responsive relays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB817122A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3004129A (en) * | 1958-07-14 | 1961-10-10 | Sunbeam Corp | Thermal responsive device |
-
1957
- 1957-08-22 GB GB26521/57A patent/GB817122A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3004129A (en) * | 1958-07-14 | 1961-10-10 | Sunbeam Corp | Thermal responsive device |
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