GB428658A - Improvements in, or relating to, electric circuit-breaker systems - Google Patents
Improvements in, or relating to, electric circuit-breaker systemsInfo
- Publication number
- GB428658A GB428658A GB23121/34A GB2312134A GB428658A GB 428658 A GB428658 A GB 428658A GB 23121/34 A GB23121/34 A GB 23121/34A GB 2312134 A GB2312134 A GB 2312134A GB 428658 A GB428658 A GB 428658A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- button
- auxiliary switch
- push
- arrangement
- 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
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/02—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather
- C14B1/04—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather using slicking, scraping, or smoothing-out cylinders or blades fixed on supports, e.g. cylinders, in a plane substantially at right angles to the working surface
- C14B1/12—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather using slicking, scraping, or smoothing-out cylinders or blades fixed on supports, e.g. cylinders, in a plane substantially at right angles to the working surface in machines with plane supporting bed-plates
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Thermally Actuated Switches (AREA)
Abstract
428,658. Protective cut-out systems. SCHIELE & BRUCHSALER INDUSTRIEWERKE AKT.-GES., Baden-Baden, Germany, and CRABTREE & CO., Ltd., J. A., Lincoln Works, Walsall. Aug. 10, 1934, No. 23121. Convention date, Aug. 10, 1933. [Class 38 (v)] In a cut-out system of the type wherein a main switch 1 is closed by a coil 2 connected in a shunt circuit from the mains in series with an auxiliary switch 4, 5 normally held closed, against the action of a spring 7, by a latch 8 adapted to be released, on overload, by a thermal device, a resetting handle or pushbutton 13 for the auxiliary switch controls a contact-member in the shunt circuit, so that the latter cannot be closed until the handle or push-button has been released after resetting the auxiliary switch. In the arrangement shown in Fig. 2, the contact-member 14 is integral with the push-button 13, and opens the shunt circuit at the points 14a, 14<b> when the button is pressed in to reset the auxiliary switch. The thermal device comprises bimetallic strips 11<a> ... 11<c> in each of the phases of the supply ; on overload, these strips displace an insulating push-rod 12 and release the latch 8. The arrangement may be used for controlling a motor driving a pump, and when it is desired to maintain the liquid in a reservoir at a uniform level, a floatoperated switch 6 may be included in the circuit of the coil 2. In a modification, Fig. 3, the contact 5 of the auxiliary switch is mounted on a leaf spring, which is deflected away from the contact 4 when the button 13 is operated to reset the contact 4. In another arrangement, Fig. 4, a separate push-button 16 is provided for closing the main switch 1, which carries an additional contact-member 15b for maintaining the operating circuit closed. The bimetallic strips 11<a> ... 11<c> are heated from current transformers 17<a> ... 17b. In a modification of this arrangement, Fig. 5, (not shown), the contact-members 14, 16 are operated by a pivoted handle.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE428658X | 1933-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB428658A true GB428658A (en) | 1935-05-16 |
Family
ID=6477498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23121/34A Expired GB428658A (en) | 1933-08-10 | 1934-08-10 | Improvements in, or relating to, electric circuit-breaker systems |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR428658A (en) |
| GB (1) | GB428658A (en) |
-
1911
- 1911-04-18 FR FR428658D patent/FR428658A/en not_active Expired
-
1934
- 1934-08-10 GB GB23121/34A patent/GB428658A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR428658A (en) | 1911-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB501885A (en) | Improvements in, and connected with, thermally-tripped automatic circuit breakers and similar electrical switchgear | |
| GB202321A (en) | Improvements in and relating to thermally controlled electric switches | |
| GB428658A (en) | Improvements in, or relating to, electric circuit-breaker systems | |
| GB869424A (en) | Improvements in or relating to current interrupting devices | |
| GB557576A (en) | Improvements in overload switches | |
| GB562020A (en) | Improvements relating to safety switches for electrically heated appliances | |
| GB633395A (en) | Improvements in and connected with electromagnetically operated switches | |
| GB486062A (en) | Improvements in screw plug and like automatic electric switches | |
| GB634238A (en) | Improvements in thermally operable electric switches or circuit-breakers | |
| GB955587A (en) | Pushbutton operated electric circuit breaker | |
| GB552187A (en) | Improvements relating to window opening and closing mechanisms | |
| GB686740A (en) | Improvements in overload release elements for electric switches | |
| GB474563A (en) | Improvements in thermal responsive switches | |
| US1854007A (en) | Thermal relay | |
| GB422392A (en) | Improvements in or relating to thermally-operated current limiting devices | |
| GB440413A (en) | Improvements in or relating to thermally operated release devices for automatic electric switches | |
| SU54716A1 (en) | Electric starting device for presses | |
| US2388784A (en) | Switch assemblage | |
| US1912611A (en) | Electrical device | |
| GB494395A (en) | Improvements in and relating to current limiting devices | |
| GB1018685A (en) | Electric motor control device | |
| GB513143A (en) | Improvements in and connected with trip-operated mechanism for electric switches | |
| GB238453A (en) | Improvements in and relating to overload electric relays | |
| GB429071A (en) | Improvements in, or relating to, automatic electric circuit breakers | |
| GB462953A (en) | Improvements in or relating to appliances for simultaneously igniting a flashlight and releasing the shutter of a photographic camera |