File:Promenade St Tower Control Panel.jpg
Summary
View of <a href="https://en.wikipedia.org/wiki/Interlocking#Relay_interlocking" class="extiw" title="w:Interlocking">interlocking machine</a> control panel inside the Promenade Street Interlocking Tower, <a href="https://en.wikipedia.org/wiki/Providence,_Rhode_Island" class="extiw" title="w:Providence, Rhode Island">Providence, Rhode Island</a>. Tower built 1909 by the <a href="https://en.wikipedia.org/wiki/New_York,_New_Haven_and_Hartford_Railroad" class="extiw" title="w:New York, New Haven and Hartford Railroad">New York, New Haven and Hartford Railroad</a>. The all-relay interlocking machine was built by <a href="https://en.wikipedia.org/wiki/Union_Switch_%26_Signal" class="extiw" title="w:Union Switch & Signal">Union Switch & Signal Co.</a> and installed in 1946 (replacing an earlier electro-mechanical machine). Tower later operated by Penn Central and Amtrak; closed in 1986. Cropped photo.
Licensing
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File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:22, 1 January 2017 | | 4,580 × 3,579 (7.47 MB) | 127.0.0.1 (talk) | View of <a href="https://en.wikipedia.org/wiki/Interlocking#Relay_interlocking" class="extiw" title="w:Interlocking">interlocking machine</a> control panel inside the Promenade Street Interlocking Tower, <a href="https://en.wikipedia.org/wiki/Providence,_Rhode_Island" class="extiw" title="w:Providence, Rhode Island">Providence, Rhode Island</a>. Tower built 1909 by the <a href="https://en.wikipedia.org/wiki/New_York,_New_Haven_and_Hartford_Railroad" class="extiw" title="w:New York, New Haven and Hartford Railroad">New York, New Haven and Hartford Railroad</a>. The all-relay interlocking machine was built by <a href="https://en.wikipedia.org/wiki/Union_Switch_%26_Signal" class="extiw" title="w:Union Switch & Signal">Union Switch & Signal Co.</a> and installed in 1946 (replacing an earlier electro-mechanical machine). Tower later operated by Penn Central and Amtrak; closed in 1986. Cropped photo. |
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