Re: blowing dust machines Re: Pelletron / patent 3,469,118 / (1969) (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 20 Jan 2004 13:29:05 -0600
From: Dr. Resonance <resonance@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: blowing dust machines Re: Pelletron / patent 3,469,
    118 / (1969) (fwd)


The solution to the "sticking to the walls" problem is something we used to
use in fireworks production.  It's called Cab-o-sil and it's sold in
Illinois.  It is a "flowing agent" which is used to cause the explosive
mixture to flow into the shell faster, ie, for faster loading.

This flowing agent is a very fine powdery dust material and typically a 5%
amount is added to the final pyro mixture.  It is so light a large bag of it
weighs approx 2 lbs --- and that's a typical bag that would normally weigh
50 lbs.   This agent would prevent all stickiness of almost any powder.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913

[Fumed silica, neat stuff... SRR]

> >
> > This machine had been conceived around 1936 by M. Pauthenier and all.
(La
> > Sorbonne , Paris ) They proposed  to used a flow of charged particles
>  glass
> > spheres of a few microns in diameter), circulating in a closed
insulating
> pipe
> > instead of the classical belt of the original apparatus. A blower
produced
> a 60
> > m.p.s flow of these particles in the loop pipe. In 1937 a Pauthenier
> > Generator produced a voltage of about 1,8 MV.
> >
> > This design was still described in first patents of Van de Graaff.
>
> Vollrath, at Univ of Southern California, also did some work with using
> diatomaceous earth. Some of his work is reported in R.A.Ford's book on
> Homemade Lightning.  I tried fooling with it, using a shopvac and so
forth,
> and it works, sort of (I killed a perfectly good Fluke 8020a trying to
> measure the current). Keeping the dust from sticking to the walls of the
> pipe is the challenge.
> >
>
>
>