GB238515A - - Google Patents
Info
- Publication number
- GB238515A GB238515A GB14021/25A GB1402125A GB238515A GB 238515 A GB238515 A GB 238515A GB 14021/25 A GB14021/25 A GB 14021/25A GB 1402125 A GB1402125 A GB 1402125A GB 238515 A GB238515 A GB 238515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- spring
- handle
- contact
- circuit
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/08—Silica
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
- C01B17/78—Preparation by contact processes characterised by the catalyst used
- C01B17/79—Preparation by contact processes characterised by the catalyst used containing vanadium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
- H01H73/42—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release reset by rotatable knob or wheel
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Breakers (AREA)
Abstract
238,515. Grosse, C. Aug. 18, 1924, [Convention date]. Automatic circuit-breakers. - Electromagnetically released overload cut-outs in the form of screw-down fuses have two members which are brought into contact successively, one of the members being tripped on overload. As shown in Fig. 1, the operating handle, a is arranged to rotate an upper insulating disc c bearing a contact d, the disc c having a pin s working in a semi-circular slot l in a lower disc e bearing a contact d<2>. The disc e is held against a spring f by the notched core g of an electromagnet h pressed upwards by a spring i. When abnormal current flows through the coil h the core i is sucked inwards, releasing the disc e, which is moved by the spring from position 2, Fig. 2, to position 2<a>, so breaking the circuit at contacts d<2>, d'. To re-latch the disc e the upper disc c is moved by the handle from position 1 to position 1<a>, so driving the disc e back to position 2, the handle then being turned back through 80‹ to bring the disc c back to position 1, so completing the circuit at contacts d. d<1>. In a modified form the operating handle a is formed integral with the cover-plate b of the cut-out, the disc e being retained set by a pivoted spring-controlled magnetic detent acted upon by an iron cored solenoid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1662970X | 1924-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB238515A true GB238515A (en) | 1925-11-19 |
Family
ID=7738619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14021/25A Expired GB238515A (en) | 1924-08-18 | 1925-05-28 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1662970A (en) |
| FR (1) | FR598928A (en) |
| GB (1) | GB238515A (en) |
| NL (1) | NL17036C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2647186A (en) * | 1949-11-15 | 1953-07-28 | Fed Electric Prod Co | Circuit breaker |
-
0
- NL NL17036D patent/NL17036C/xx active
-
1925
- 1925-05-28 GB GB14021/25A patent/GB238515A/en not_active Expired
- 1925-05-29 FR FR598928D patent/FR598928A/en not_active Expired
- 1925-06-12 US US36746A patent/US1662970A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR598928A (en) | 1925-12-29 |
| US1662970A (en) | 1928-03-20 |
| NL17036C (en) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB429543A (en) | Improvements in or relating to electric circuit interrupters | |
| US2057093A (en) | Fuse-plug type circuit breaker | |
| GB242664A (en) | Improvements in or relating to electro-magnetic cut-outs | |
| GB238515A (en) | ||
| GB600421A (en) | Improvements in or relating to automatic circuit breakers | |
| GB486062A (en) | Improvements in screw plug and like automatic electric switches | |
| GB211158A (en) | ||
| GB244098A (en) | Improvements in and relating to electric switches | |
| GB588724A (en) | An improved electric switch with over-current release | |
| US2766352A (en) | Motor protector switch | |
| GB357369A (en) | Improvements in automatic electric circuit-breakers | |
| GB215350A (en) | Electric circuit breaker with ultra-rapid break | |
| US2616999A (en) | Circuit breaker trip mechanism | |
| US1484645A (en) | Circuit breaker | |
| GB462953A (en) | Improvements in or relating to appliances for simultaneously igniting a flashlight and releasing the shutter of a photographic camera | |
| GB513143A (en) | Improvements in and connected with trip-operated mechanism for electric switches | |
| GB364620A (en) | Improvements relating to automatic electric circuit breakers | |
| GB435435A (en) | Maximum cut-out for direct or alternating current | |
| GB185514A (en) | An automatic electric circuit breaker for equilibrated polyphase electric circuits | |
| GB401017A (en) | Improvements in electro-magnetically-operated electric switches | |
| CH186943A (en) | Self-contained installation switch that can only be switched on and off with instantaneous connection and cannot be kept in the on position in the event of an overload. | |
| GB352628A (en) | An improved automatic switch with thermostatic control | |
| GB670559A (en) | Improvements in or relating to electric contact arrangements particularly adapted for use with electromagnetic circuit-breakers | |
| GB266728A (en) | Improvements in and relating to overload circuit breakers | |
| GB484803A (en) | Improvements in and relating to electrical cut-out switches |