GB307767A - Improvements relating to the mounting of vibrating reeds, more particularly for use in connection with electromagnetic gramophone pick-ups, loud speakers and the like - Google Patents
Improvements relating to the mounting of vibrating reeds, more particularly for use in connection with electromagnetic gramophone pick-ups, loud speakers and the likeInfo
- Publication number
- GB307767A GB307767A GB3335927A GB3335927A GB307767A GB 307767 A GB307767 A GB 307767A GB 3335927 A GB3335927 A GB 3335927A GB 3335927 A GB3335927 A GB 3335927A GB 307767 A GB307767 A GB 307767A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reed
- pick
- armature
- ups
- magnet
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
307,767. Wilson, P. Dec. 9, 1927. Gramophone pick-ups; magnetic instruments. -In order to damp the fundamental and even harmonics, the reed or vibrating armature of a pick-up or loud speaker is mounted about an axis which passes through the loop of the fundamental mode of vibration of the complete vibrating system, which in the case of a pick-up comprises the armature, needle socket, and needle- To ensure damping, the free end of the reed &c. compresses small air cushions in soft rubber tubes inserted in the magnet pole-pieces. In the pick-up shown in Figs. 1 and 4, the permanent magnet f has rectangular pole-pieces e fixed to the tips of the magnet and extended to form a narrow gap about the upper end of the reed a, which is surrounded by a coil l. The pivots of the reed a may consist a pair of knife-edges, of pins d surrounded by rubber tube, or of a pair of steel balls recessed into the reed and supporting brass plates. In the case of a loud speaker, the armature may be damped at both ends
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3335927A GB307767A (en) | 1927-12-09 | 1927-12-09 | Improvements relating to the mounting of vibrating reeds, more particularly for use in connection with electromagnetic gramophone pick-ups, loud speakers and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3335927A GB307767A (en) | 1927-12-09 | 1927-12-09 | Improvements relating to the mounting of vibrating reeds, more particularly for use in connection with electromagnetic gramophone pick-ups, loud speakers and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB307767A true GB307767A (en) | 1929-03-11 |
Family
ID=10351892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3335927A Expired GB307767A (en) | 1927-12-09 | 1927-12-09 | Improvements relating to the mounting of vibrating reeds, more particularly for use in connection with electromagnetic gramophone pick-ups, loud speakers and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB307767A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2537718A (en) * | 1945-10-01 | 1951-01-09 | Trorey Lyle Graeme | Photogrammetric apparatus |
-
1927
- 1927-12-09 GB GB3335927A patent/GB307767A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2537718A (en) * | 1945-10-01 | 1951-01-09 | Trorey Lyle Graeme | Photogrammetric apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB928337A (en) | Artificial reverberation apparatus | |
GB307767A (en) | Improvements relating to the mounting of vibrating reeds, more particularly for use in connection with electromagnetic gramophone pick-ups, loud speakers and the like | |
US2494390A (en) | Electrical pickup | |
GB588178A (en) | Improvements in or connected with electro-magnetic pick-up devices for use with stringed musical instruments | |
GB334551A (en) | Improvements relating to electro-magnetic gramophone pick-ups or recorders | |
US2213936A (en) | Electrodynamic pickup | |
US1852594A (en) | Means for converting sound into electrical impulses | |
US2471365A (en) | Armature structure for electromagnetic apparatus | |
GB261698A (en) | Improvements in sound reproducing apparatus | |
GB334493A (en) | Improvements in and relating to apparatus for producing sound | |
GB322813A (en) | Improvements in or relating to electrical pick-ups and like reproducing or recordingdevices | |
GB325067A (en) | Improvements in or relating to electro-magnetic vibratory devices for use for example in the recording or reproduction of sound | |
GB355227A (en) | Improvements relating to the mounting of vibrating reeds, more particularly for use in connection with electromagnetic gramophone pick-ups, loud speakers and the like | |
GB591975A (en) | An improved armature structure for electro-magnetic apparatus | |
GB254403A (en) | Improvements in electromagnetic microphones or the like, adapted to be actuated by agramophone or like record | |
GB660741A (en) | Improvements in or relating to electrical sound reproduction devices for use on pianos and other musical instruments | |
GB272637A (en) | Improvements in sound recording and reproducing machines | |
GB272990A (en) | Improvements in or relating to electro-magnetic apparatus for use with gramophones in conjunction with loud speaking telephonic apparatus | |
GB211826A (en) | Improvements in or relating to sound-reproducing devices, applicable also for recording telegraphic signals | |
GB328595A (en) | Improvements in and relating to electrical gramophone pick-ups and the like | |
GB286719A (en) | Improvements relating to electro-magnetic sound recorders and reproducers | |
GB320081A (en) | Improvements in or relating to sound reproducing or transmitting instruments | |
GB294877A (en) | ||
GB321144A (en) | Improvements in and relating to electrical reproduction of gramophone and like sound records | |
GB333537A (en) | Improvements in or relating to electro-magnetic vibratory devices for use, for example, in recording or reproducing sounds |