[SEL] "Free wheel, Locked wheel"

[Ken Christison]

These are also called "tight and loose" pulleys, as well as "fast and loose"
pulleys.  Here is a description of the purpose:

        "Fast and loose pulleys (Mach.), two pulleys placed side by
        side on a revolving shaft, which is driven from another
        shaft by a band, and arranged to disengage and re["e]ngage
        the machinery driven thereby. When the machinery is to be
        stopped, the band is transferred from the pulley fixed to
        the shaft to the pulley which revolves freely upon it, and
        vice versa."

http://onlinedictionary.datasegment.com/word/Fast+and+loose+pulleys

Take care.

Ken


> [Original Message]
> From: Richard Strobel <Richard_Strobel7 at msn.com>
> To: SEL email discussion list <sel at lists.stationary-engine.com>
> Cc: Corky and Judy Harris <cork_jud at msn.com>
> Date: 3/22/2005 8:53:19 PM
> Subject: [SEL] "Free wheel, Locked wheel"
>
> Howdy all;
>   We don't know why, but several of our pump jacks and water pumps (F-M 
> "typhoon") have 2 belt pulleys next to each other.  One is free wheeling
and 
> the other is locked to the shaft.  We believe they called this
arrangement 
> "free wheel, Locked wheel".
>   Can anyone explain why they did this arrangement?
>
> TIA
> Rick and Cork in Mt.