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Bank of 50 Keith Line Switches, 1920-1925
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Bank of 50 Keith Line Switches, 1920-1925, result 1 of 1

Item Details
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Available to everyone
Title
Bank of 50 Keith Line Switches, 1920-1925
Bank of 50 Keith Line Switches recovered from a rural exchange
Work Type
Telecommunications
Date
1920-1925
Location
Chicago
Material
copper (alloy); iron; metal (unknown); paint; textile; wood (unidentified)
Measurements
overall: 1420 mm x 545 mm x 250 mm, 115 kg
Description
Bank of 50 Keith Line Switches recovered from a rural exchange in New Zealand, made by the Automatic Electric Company, Chicago, 1920-1925. Together with spare plunger, two spare line backs, and two pre-2000 two-motion selectors; Bank of 50 Keith Line Switches recovered from a rural exchange in New Zealand, made by the Automatic Electric Company, Chicago, 1920-1925. Complete with spare plunger, two spare line backs, and two pre-2000 two-motion selectors; Bank of 50 Keith Line Switches recovered from a rural exchange in New Zealand, made by the Automatic Electric Company, Chicago, 1920-1925.; The line switch, devised by Alexander Keith of the Strowger Company in 1906, obviated the need for each user's line to be connected to a more expensive selector switch. The number of selector switches employed henceforth only needed to be sufficient to handle the maximum number of calls expected at any one time. This bank of line switches was part of the main telephone exchange in Wanganui, New Zealand, until the mid-1990s. Similar line switches were installed at Epsom and other trial automatic exchanges in Britain from 1912.
Repository
Donated by Waikanae District Museum Limited
ID Number
co34092
Source
Image and original data from Science Museum Group - https://collection.sciencemuseum.org.uk
Rights
The source metadata displayed in the Description field is released under a Creative Commons Attribution 4.0 license - https://creativecommons.org/licenses/by/4.0/. All other source metadata is released under Creative Commons Zero - https://creativecommons.org/publicdomain/zero/1.0/. The image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License - https://creativecommons.org/licenses/by-nc-sa/4.0/.
File Properties
File Name
large_1990_0420__0004_.jpg
SSID
26312835

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