Re: TC for VDG injection

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz <twftesla-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>

Tesla list wrote:
> 
> Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<davep-at-quik-dot-com>

>         I can't think of a previous _belt_ machine.
>         I'd have thought that was the fundamental change...

Righi made a belt electrostatic machine working on influence 
principle:
http://www.coe.ufrj.br/~acmq/righi17.jpg
It was described in the paper:
A. Righi, "Sulla penetrazione delle cariche elettriche nei coibenti 
fissi ed in movimento con applicazione alla teoria dei condensatori, 
dell'elettroforo e delle macchine ad induzione," Memorie Acc. Sc. R. 
Ist. di Bologna, VI, pp. 87-157, 1875.

Several old friction machines (1700's) using silk belts are described 
in the book (plate in page 281):
W. D. Hackmann, "Electricity from Glass, The history of the frictional 
electrical machine, 1600-1850," Sijthoff & Noordhoff, The Netherlands, 
1978. 

Antonio Carlos M. de Queiroz