GB190825036A - Improvements in Thermostats. - Google Patents
Improvements in Thermostats.Info
- Publication number
- GB190825036A GB190825036A GB190825036DA GB190825036A GB 190825036 A GB190825036 A GB 190825036A GB 190825036D A GB190825036D A GB 190825036DA GB 190825036 A GB190825036 A GB 190825036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screw
- strip
- bar
- expansible
- thermal
- 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
Landscapes
- Thermally Actuated Switches (AREA)
Abstract
25,036. Geissinger, H. G. May 29,1907, [date applied for under Section 91 of Patents &c. Act, 1907]. Switches.-In a thermal contact-maker in which the thermal couple is formed by an expansible rigid element and a less expansible flexible element, as described in Specification No. 27,608, A.D. 1907, the means for supporting and adjusting the thermal couples are claimed. Fig. 1 shows two thermostats mounted on one frame 15. Each .thermal couple consists of an expansible rigid channel-shaped bar 1, provided at its,ends 2,:3 with screws 4, 5, between V-shaped grooves in the heads of which is sprung a flexible strip 10 of spring steel or other material less expansible than the bar 1. The heads of the screws 4, 5 are also provided with square grooves, at right-angles to and deeper than the V-grooves, in which tongues at the ends of the flexible strip 10 engage to prevent lateral displacement. The screw 4 is adjustable for varying the curvature of the strip 10, and a pin 13 prevents reverse curvature. The flexible strip 10 is adapted to close a circuit through an insulated contact-screw 14 carried by the frame 15. The screw 14 is preferably of iron, and may form one pole-piece of an electro-magnet 26 in the regulating-circuit, and by its attraction .on the strip 10, may prevent the circuit from being brokenuntil a definite change of temperature has taken place. The other pole piece 27 is of considerable area, so as to exert only a small attraction on the strip 10. The bar 1 is pivoted at its upper end 2 to an arm 18, pivoted to the frame 15 by a screw 19. To the lower end 3 of the bar 1 is loosely pivoted.a bell-crank lever 22, the shorter arm of which abuts against a screw 24, while the longer arm is adjustable by a calibrated screw 25 for adjusting the temperature .at which the device operates. Springs 20 21 prevent vibration of the bar 1 and lost motion at the pivots 17, 23. The strip 10 may be concave to the contactpin 14, so that contact is made on expansion of the thermal couple
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US190825036XA | 1907-05-29 | 1907-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB190825036A true GB190825036A (en) | 1908-12-14 |
Family
ID=32470583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB190825036D Expired GB190825036A (en) | 1907-05-29 | 1907-12-14 | Improvements in Thermostats. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB190825036A (en) |
-
1907
- 1907-12-14 GB GB190825036D patent/GB190825036A/en not_active Expired
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