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 Post subject: CLM History
PostPosted: Sat Apr 10, 2021 4:49 pm 
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Canadian Line Materials was located at 3595 St. Clair Avenue East in Scarborough, Ontario, adjacent to the CN railway and midway between Kennedy and Midland. Known as CLM Industries, it was a division of McGraw-Edison ltd. Max McGraw started his company in 1903 and in 1957 bought Thomas Edison Co. forming the McGraw-Edison Co.Ltd. They manufactured electrical equipment and 1950's they were contacted by the Canadian Government to build air raid sirens. Though they might have produced sirens during WW2 but I have yet to fully confirm that. A photo was found of a WW2 British Columbia ARP display that has a siren in it that looks like a CLM. These sirens were adopted from our British cousins sirens during WW2. The sirens had to be dual tone to distinguish the sound from a single tone fire alarm siren which would call firefighters to a station. They were mostly 10/12 port but had other variants like 20/24 and in the 5HP rotational unit, 4/12 . They made various models of sirens, like the 3HP omni directional, 5HP rotational and the 5HP carter look alikes. They came in a number of voltages ranging from single phase 110V to 3 phase 550V. CLM Industries was sold in 1985 to Cooper Industries of Texas and no longer exists. The only thing that remains is the original smoke stack that has CLM imprinted on the side, located at there old facility.


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File comment: Style 1 of Controls
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File comment: Style 2 of Controls
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File comment: Omni Directional 3HP CLM
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Warfield BC.jpg [ 76.67 KiB | Viewed 313 times ]
File comment: Rotational 5HP CLM
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File comment: Single phase CLM variant
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File comment: WW2 display
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1796420_818344734849631_359414128_n copy.jpg [ 64.1 KiB | Viewed 313 times ]
File comment: Original manufacturing
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f1257_s1057_it2228[1] copy.jpg [ 163.35 KiB | Viewed 313 times ]
File comment: Shows the 10/12 & 20/24 models
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f1257_s1057_it2231[1] copy.jpg [ 130.33 KiB | Viewed 313 times ]

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Last edited by Siren_Dude on Sun Apr 11, 2021 1:03 am, edited 1 time in total.
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 Post subject: Re: CLM History
PostPosted: Sat Apr 10, 2021 8:51 pm 
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Real Name: bruh momento 2
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Very Nice Information!

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 Post subject: Re: CLM History
PostPosted: Mon Apr 12, 2021 7:31 pm 
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Very interesting! Thanks for sharing

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 Post subject: Re: CLM History
PostPosted: Thu Apr 15, 2021 6:20 am 
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Real Name: Ethan B
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Very cool!

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