NOTE:
Although all of these digitized articles are 60 or more years old, and likely have minimal commercial value today, the reader should bear in mind that material dated after 1923 remains under copyright by Simmons-Boardman Publishing.
These articles and the information contained therein may be freely reproduced or used in printed or electronic form for non-commercial or educational purposes, provided the copyright holder and original author (if known) are acknowledged, and provided that such publication also refers readers to the original document on this site.
Simply making interesting material available to those who share my interest in the railway signal systems of the past has been my sole objective in this long project.
1962 | Centralization – Dispatch Circuits Are Changing 1.3 MB |
---|
1934 | Electro-Pneumatic Interlocking on the Long Island 3.8 MB |
---|---|
1952 | Speed Control Installed on the Long Island 1.3 MB |
1934 | CTC Replaces Staff on GTW 2.6 MB |
---|
1947 | Annual Review and Outlook 425.1 KB |
---|
1961 | Railroad Will Pay For CTC Out Of Accrued Savings 842.9 KB |
---|
1915 | Electric Train Staff Installation 3.3 MB |
---|
1947 | Canadian Pacific Installs Absolute Permissive Block 779.4 KB |
---|
1930 | Pennsylvania Uses Remote Control for Switches 1.1 MB |
---|
1930 | W. M. Vandersluis 550.2 KB |
---|
1962 | News Briefs. 1962-10 447.9 KB |
---|
1945 | CTC West of the Pecos On the Santa Fe 4.6 MB |
---|
1932 | Electric Lock for Spring Switch 1.3 MB |
---|
1945 | Monon Remote Control Signaling Saves Train Time 3.5 MB |
---|
1962 | News Briefs. 1962-02 1.4 MB |
---|---|
1962 | Trains Control Automatic Bridge 1.2 MB |
1939 | Phantom Indications in Color-Light Signals 2.2 MB |
---|
1948 | CTC Keeps ‘em Rollin’ on C&EI 2.1 MB |
---|
1961 | Railroad Will Pay For CTC Out Of Accrued Savings 842.9 KB |
---|
1949 | New Interlocking in Louisville 5.3 MB |
---|
1947 | All-Relay Interlocking Replaces Mechanical Plant 1.5 MB |
---|---|
1932 | An Early Automatic Interlocking 411.4 KB |
1943 | Centralized Traffic Control Installed on the Virginian 7.0 MB |
1950 | Differentiation Between Signals 955.8 KB |
1956 | Release of Locking 3.7 MB |
1939 | Safety and Design of Signal Circuits 5.0 MB |
---|
1962 | News Briefs. 1962-02 1.4 MB |
---|