354 



LAND-TKANSPOKT. 



the Avires baupj quite freely without any support at an antj;k' of 

 about 2G degrees. Another double wire-tramway has been 

 constructed m the forests of the Count of Stolberg-Wernigrode. 



Fig. 19 



Fig. 198. 



It differs from the preceding one owing to its moderate gradient 

 and because the wires are supported at several points by bent 

 iron rods (fig. 198) attached to hori- 

 zontal poles (ni) supported by trestles. 

 In fig. 198, {<i) is the wire and (c) 

 wheel of the truck. This tramway is 

 supplied with a special windlass for 

 dragging logs up to it from distances 

 of 200 meters by means of a wire. 

 The Prince of Schwartzenburg has 

 similar wh-e-tramways in his forests in 

 Bohmerwald. The largest wire-tram- 

 way of this class is at Roveredo, and is 

 5 miles long. 



2. Sinf/h' Wirc-Tnimivaiis. 



In single-wire tramways, the laden 

 and empty trucks travel at the same 

 time on a single wire ; otherwise their 

 construction is similar to that of the double-wire tramways, 

 the only peculiarity in this case being the arrangement for 



