[modeleng] Re: flat belt grip

The belt paste used to be supplied in a round stick, about 2" in diameter in 
a paper tube.   It was black, quite hard and VERY sticky!    I have not seen 
this for 60 years.

You held it against the rotating belt, and the friction melted the stick. 
This immediately increased the grip of the belt, and for a while, made a 
squishy noise.    The pulleys were 'crowned'
 to keep the belt central.      A line shaft ran numerous machines, with a 
lever on each machine to move the belt from the 'loose' to the 'fast' 
pulley.

There was also a little clamping device, which drove the steel 'lacing' into 
the ends of the leather or fabric belts, which were then connected with a 
piece of round gut.

Fractional motors were very expensive before WWII, often costing as much as 
a cheap lathe - hence the use of a single motor and line shaft, or when 
there was not an electricity supply, a small steam engine, gas engine, or 
diesel to run the line shaft.

Oh my, all of this was happening in my youth!

Cheers!   Hubert

----- Original Message ----- 
From: "Alan Stepney" <alan@xxxxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Friday, August 31, 2007 9:29 PM
Subject: [modeleng] flat belt grip


> Just received the following query.
>
> ...there was a belt paste which we would plaster on the old flat belts to
> get a grip (so to speak), and I was wondering if you knew of any such 
> stuff
> being available or some kind of mixture that could be procured to do the
> job.
>
> I suggested rosin, but has anyone else anyy suggestions.
> Alan Stepney
>
> http://www.alanstepney.info
> Model Engineering & steam engine information pages
>
> MODEL ENGINEERING DISCUSSION LIST.
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