GB258000A - Improvements in telephone receivers and transmitters and the like electromagnetic instruments and the manufacture thereof - Google Patents
Improvements in telephone receivers and transmitters and the like electromagnetic instruments and the manufacture thereofInfo
- Publication number
- GB258000A GB258000A GB15094/25A GB1509425A GB258000A GB 258000 A GB258000 A GB 258000A GB 15094/25 A GB15094/25 A GB 15094/25A GB 1509425 A GB1509425 A GB 1509425A GB 258000 A GB258000 A GB 258000A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pole
- magnet
- strip
- piece
- riveted
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000010276 construction Methods 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
- H04R13/02—Telephone receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/22—Clamping rim of diaphragm or cone against seating
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Multimedia (AREA)
- Magnetic Treatment Devices (AREA)
- Coils Or Transformers For Communication (AREA)
- Electromagnets (AREA)
Abstract
258,000. British Thomson-Houston Co., Ltd., Young, A. P., and Hutt, J. June 10, 1925. Addition to 236,680. Magnets.-Relates to electromagnetic instruments of the kind described in the parent Specification in which each pole-piece 11 is shaped to fit closely around an end of the permanent magnet 13 and is then pressed so as to malie a firm connection therewith and consists in making each pole-piece extend over the sides of the magnet so that the pole-pieces are prevented from moving laterally with respect to the magnet. Each pole-piece 11 may be provided with one or more integral lugs 18, Fig. 2, by which the magnet assembly may be screwed or riveted to the casing 19. The pole-pieces may also be formed with integral upper lugs 21 to which a terminal board 22 of insulating material may be secured. Fig. 5 shows a modified construction in which the magnet assembly is secured by a bent strip 25 passing over the magnet at 26 and riveted to the casing at 27. One end of strip 25 is bent up at 28 to anchor the terminal board 22 whilst the other end of the strip is arranged to anchor the flex leads as shown at 29.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9851/24A GB236680A (en) | 1924-04-17 | 1924-04-17 | Improvements in telephone receivers and transmitters and the like electromagnetic instruments and the manufacture thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
GB258000A true GB258000A (en) | 1926-09-10 |
Family
ID=9879979
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9851/24A Expired GB236680A (en) | 1924-04-17 | 1924-04-17 | Improvements in telephone receivers and transmitters and the like electromagnetic instruments and the manufacture thereof |
GB15094/25A Expired GB258000A (en) | 1924-04-17 | 1925-06-10 | Improvements in telephone receivers and transmitters and the like electromagnetic instruments and the manufacture thereof |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9851/24A Expired GB236680A (en) | 1924-04-17 | 1924-04-17 | Improvements in telephone receivers and transmitters and the like electromagnetic instruments and the manufacture thereof |
Country Status (3)
Country | Link |
---|---|
US (1) | US1628383A (en) |
FR (2) | FR598053A (en) |
GB (2) | GB236680A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2566604A (en) * | 1948-03-16 | 1951-09-04 | William C Eaves | Electrodynamic loud-speaker assembly |
US2522266A (en) * | 1948-05-25 | 1950-09-12 | Beltone Hearing Aid Co | Magnetic receiver |
-
1924
- 1924-04-17 GB GB9851/24A patent/GB236680A/en not_active Expired
-
1925
- 1925-04-14 US US22973A patent/US1628383A/en not_active Expired - Lifetime
- 1925-04-16 FR FR598053D patent/FR598053A/en not_active Expired
- 1925-06-10 GB GB15094/25A patent/GB258000A/en not_active Expired
-
1926
- 1926-04-30 FR FR31850D patent/FR31850E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR31850E (en) | 1927-06-13 |
GB236680A (en) | 1925-07-16 |
US1628383A (en) | 1927-05-10 |
FR598053A (en) | 1925-12-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES479254A1 (en) | Miniature plug-in fuse assembly and method of manufacture | |
US3614335A (en) | Electroacoustic transducer held together by thermoplastic clamping ring | |
GB841105A (en) | Improvements in or relating to contact plug arrangements for a printed circuit disposed on a plate of insulating material | |
GB1212158A (en) | Electrical connector assembly | |
GB258000A (en) | Improvements in telephone receivers and transmitters and the like electromagnetic instruments and the manufacture thereof | |
GB688338A (en) | Improvements relating to terminals for electric conductors | |
GB1468313A (en) | Electromagnetically operable switch arrangement | |
GB541250A (en) | Improvements in electrical terminal arrangements | |
GB229823A (en) | Improved magnet for telephone receivers | |
GB255201A (en) | Improvements in telephone receivers and like instruments | |
GB626838A (en) | Improvements in and relating to electrical wiring terminal installations | |
GB391998A (en) | Improvements in or relating to electric arc horns | |
GB353468A (en) | Improvements in or relating to wander plugs and like electric terminals | |
GB307106A (en) | Improvements relating to electro-magnetic acoustic devices, such as loud-speakers | |
US1721426A (en) | Telephone receiver | |
GB646975A (en) | Improvements in terminals for electric leads | |
GB840237A (en) | Improvements in or relating to electrical circuits and their manufacture | |
GB662050A (en) | An improved method of the securing of electrical connecting tags to an insulating base | |
GB215850A (en) | Improvements in telephone receivers | |
GB774979A (en) | Improvements in or relating to methods of forming electrical terminals on a terminalboard or strip | |
US1977125A (en) | Transmission of electrical impulses by radio | |
GB298719A (en) | Improvements relating to electro-static devices for the inter-conversion of mechanical and electrical oscillations, such as condenser telephones | |
GB526702A (en) | Improvements in or relating to high frequency electric cables | |
GB626837A (en) | Improvements in and relating to wiring terminal installations | |
GB203121A (en) | Improvements in or relating to telephone receivers |