![](https://coimages.sciencemuseumgroup.org.uk/49/848/medium_thumbnail_1970_0063__0002_.jpg)
!["Thunder pump" magneto-electric device](https://coimages.sciencemuseumgroup.org.uk/46/121/small_thumbnail_1876_1375__0002_.jpg)
!["Thunder pump" magneto-electric device](https://coimages.sciencemuseumgroup.org.uk/46/122/small_thumbnail_1876_1375__0003_.jpg)
!["Thunder pump" magneto-electric device](https://coimages.sciencemuseumgroup.org.uk/46/120/small_thumbnail_1876_1375__0001_.jpg)
'Thunder pump' magneto-electric device, made by W T Henley's Telegraph Works Company Limited, London, England, 1856.
This design of magneto-electric machine was used by the Electric Telegraph Company. Pumping the handle created a strong alternating current, which rang a call bell at the far end.
Details
- Category:
- Telecommunications
- Object Number:
- 1876-1375
- Materials:
- wood (unidentified), brass (copper, zinc alloy), steel (metal) and silk
- Measurements:
-
overall: 195 mm x 460 mm x 250 mm, 12.52 kg
- type:
- magneto
- credit:
- From Reid Brothers