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Lehman57
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Fire Dept. Spring Raised Aerial Ladders

11/29/2012 9:34 AM

Is anyone here familiar with the spring raising system? These were used in the 1920s. The newest I personally know of is 1930, so springs were likely available into the 1930s. I understand there were usually 2 "spring packs" with each having a force of something like 40,000 pounds. Does anyone know how these were assembled? Any other details would also be helpful. Thanks.

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Lehman57
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#1

Re: Fire Dept. Spring Raised Aerial Ladders

11/29/2012 9:00 PM

I suspect you are thinking of modern hydraulic aerials, at least that is what the link showed. My query is about 1920s era Ahrens-Fox, American-LaFrance, and Seagrave--Pierce wasn't even around then. These are spring raised, not hydraulic at all. Extension of the fly, rotation, and adjustment of the elevation was by hand crank.

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phoenix911
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#2
In reply to #1

Re: Fire Dept. Spring Raised Aerial Ladders

11/30/2012 5:49 AM

No, i was thinking there is a allot of history on these trucks, especially Seagrave. Which had the first Four Wheel Drive, I believe the four runner of Seagrave was FWD. and that's where you may find something.

With the web, one tends to get lazy. But the other resource is your public library. Which also more than likely has a website, and a section of 'Ask your librarian'. That is does not get used.

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