GB190714238A - - Google Patents
Info
- Publication number
- GB190714238A GB190714238A GB190714238DA GB190714238A GB 190714238 A GB190714238 A GB 190714238A GB 190714238D A GB190714238D A GB 190714238DA GB 190714238 A GB190714238 A GB 190714238A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cores
- screws
- reduced
- brass plate
- plate
- 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
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
14,238. British Insulated and Helsby Cables, Ltd., and Bartlett, W. June 2U. Telegraphs. - Relates to the construction of polarized and other telegraph sounders. The softiron cores are rigidly attached to the brass plate carrying the pillars which support the armature, so that, adjustment being once made, it is not affected by the warping of any of the wooden parts of the instrument. The soft-iron cores c, Figs. 4 and 6, have their lower ends reduced in diameter and a shoulder is thereby formed. The brass plate b is provided with hobs through which the reduced ends of the cores pass, and the nuts n clamp the plate and cores together. The permanent magnet m is fixed to the cores c, by screws entering holes drilled in the bottom of the cores and tapped for the reception of the screws.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190714238T | 1907-06-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190714238A true GB190714238A (en) | 1907-09-05 |
Family
ID=32550133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190714238D Expired GB190714238A (en) | 1907-06-20 | 1907-06-20 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190714238A (en) |
-
1907
- 1907-06-20 GB GB190714238D patent/GB190714238A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB190714238A (en) | ||
US252256A (en) | rogers | |
US707441A (en) | Telephone-receiver. | |
US1869884A (en) | Testing device | |
US2355298A (en) | Sound translating device | |
US560403A (en) | Telephone-receiver | |
US683952A (en) | Telephone-transformer. | |
US496602A (en) | Electric signaling apparatus | |
US1681963A (en) | Magnetophone | |
US395556A (en) | Vibratory multiplex telegraphy | |
US334871A (en) | Telegraph-sounder | |
US1051989A (en) | Harmonic party-line telephone-ringer. | |
US322884A (en) | Telephone-receiver | |
US772630A (en) | Method of transforming electrical currents. | |
US1713205A (en) | Duplex loud talker | |
US1774975A (en) | Electromagnetic pick-up device | |
US484150A (en) | Is peters co | |
US824159A (en) | Microphone. | |
US220205A (en) | Improvement in combinid speaking-telephone and morse sounder | |
US899264A (en) | Oscillation-detector. | |
US389080A (en) | Electro-magnetic bell | |
US1656781A (en) | Production or conversion of sound by or into electric currents | |
US1113499A (en) | Sound-magnifying appliance for telephonic and telegraphonic purposes. | |
US972721A (en) | Wireless telegraphy or wireless telephony. | |
US1203326A (en) | Telephone relay or repeater. |