328 



CHEMICAL MANUEES. 



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existing beams. Fig. 

 64 shows the auto- 

 matic filling of silos 

 by an electric railway 

 suspended from old 

 wooden beams, whilst 

 Fig. 63 shows that the 

 automatic electrical 

 railway has been sus- 

 pended from new me- 

 tallic structures. The 

 system of bin and car 

 of Fig. 64 is a stout 

 thick-sst system in a 

 vertical direction, tak- 

 ing into account that 

 the old wooden beams 

 of factories are at this 

 point surbased, that 

 they only allow of a 

 small heap, and that 

 thus all economy in 

 the vertical height of 

 the plant installed is 

 particularly appreci- 

 ated. On the other 

 hand, in a new build- 

 ing like that of Fig. 

 63, the necessary ver- 

 tical height can be 

 calculated at leisure, 

 profiting in the de- 

 signing of the plant 

 by the advantages of 

 a sufficient height to 

 instal an appropriate 

 system of transport. 

 This system, so re- 

 markable and so 

 simple in itself, in- 

 sures the conveyance 

 with a minimum of 

 handling of big ton- 

 nages in as automatic 

 a manner as possible. 

 The Coinjjagnie 

 St. Gobain, Chauny 



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