Older American cars had glass bowls under/near the carb for the same purpose; release the wire bail, remove and empty, and reinstall. We had Hudsons and Studebakers as second cars in the '50s and '60s so that unit would have been on them. 

Stephen

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> On Sep 7, 2019, at 2:21 PM, Dan N <dn92610@GMAIL.COM> wrote:
> 
> just throw in another idea...
> I remember having seen this device on my Dad's Renault car (it was long
> ago)... the fuel line goes from the tank to a glass jar then to the fuel
> pump then to the carb. Time to time my Dad unclip the glass jar and clean
> when he sees some dirt/water in there at the bottom of jar..
> 
> dan