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If you look at CB&Q alignment charts, you will see at least several locations identified as CTC prior to it being first being patented and used by US&S in 1927.
Beginning in about 1915, CB&Q began installing switches and signals at various locations, operated remotely from interlocking towers in the vicinity. This was in lieu of installing a completely new interlocking. The operation of Ports from Crawford, the East
end of Mendota from MS Tower, Oxford Jct. from Oxford, Cobb from Hall Tower and Shannon from Whitebreast, are all examples. The timetable would include notes defining operations at these locations as something like "Between ___ and ___ trains will be governed
by signal indications. When signals so indicate, trains will proceed regardless of superiority". Although not technically CTC because differences in the ways that circuits were wired and interconnected, the operation was practically the same.
In 1916, CB&Q was incurring delays at Carthage Jct. (Illinois Jct.). The time required for branch trains to stop and hand-throw turnouts was delaying mainline traffic, and delaying the operation of the drawbridge. It was therefore decided to control the turnouts
and associated signals remotely from Wood Tower, on the Iowa side of the river, so that trains did not have to stop on the bridge. The notation "CTC 1916" on the alignment chart (from MP 204.99 to 204.33) was an effective way to historically differentiate
between the different dates that operations by signal indication was placed in service between Connett and the west end of Burlington.
Glen Haug
From: CBQ@groups.io <CBQ@groups.io> on behalf of Dave Lotz <Dave_Lotz@bellsouth.net>
Sent: Saturday, December 2, 2023 11:16 AM
To: CBQ@groups.io <CBQ@groups.io>
Subject: Re: [CBQ] Signal Question
All,
Wood Tower was built in 1892, the telegraph equipment that was originally installed on the second floor of the Victorian depot was moved to the tower in 1931. The 1958 CB&Q annual report tells that CTC was installed in 1958 along with
8 automatic grade crossing signals. The alignment charts agree with the 1958 date. Photographic evidence shows the CTC panel was initially installed in the tower, but the annual report also says that the CTC would allow for the removal of Wood Tower. A Burlington
Hawk-Eye article confirms the tower was razed in the late 1950s. Prior to the razing the CTC panel was relocated to the 2nd floor of the depot. The CTC controlled operations from Connett, Illinois, (MP202.4) east of the Mississippi River,
to MP206.8 immediately west of the Mt. Pleasant Street overpass. Am interesting note on the alignment chart for the Mississippi River bridge shows the CTC was installed between signal bridge 204.33 east of the bridge to the signal bridge 204.99 at the Burlington
yard limits as early as 1916!
Dave
From: CBQ@groups.io <CBQ@groups.io> On Behalf Of
Louis Zadnichek via groups.io
Sent: Saturday, December 2, 2023 11:57 AM
To: CBQ@groups.io
Subject: Re: [CBQ] Signal Question
Lenny - Did this board date back to the CB&Q era or was it manufactured and installed during the BN era? - Louis
In a message dated 12/2/2023 9:39:27 AM Central Standard Time,
Dave_Lotz@bellsouth.net writes:
Hi Lenny,
This is after they moved the board from the tower to the depot. Phil’s daughter, Paula, was in my high school class of 73.
Dave
Dave,
Thank you for the update. Above is when the machine was in service. Phil Woods is the operator. Several things have been blacked out such as the bridge locks and Ill. Jct.
Lenny
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