Forfatter: A.-M.Inst.C E., George Frederick Zimmer
År: 1916
Forlag: Crosby Lockwood and Son
Sted: London
Sider: 752
UDK: 621.87 Zim, 621.86 Zim
Being a Treatise on the Handling and Storing of Material such as Grain, Coal, Ore, Timber, Etc., by Automatic or Semi-Automatic Machinery, together with the Various Accessories used in the Manipulation of such Plant
ROPEWAYS
291
An unusual arrangement of the terminals of two distinct ropeways belonging,
however, to the same colliery establishment is indicated by the diagram, Figs. 424 and
425. The two ropeways connect the collieries in question with an enormous spoil heap,
the property of a third mining undertaking, and have been installed for the purpose of
bringing the spoil to the pits for packing purposes. The spoil is now no longer taken
to the top of the heap, but is brought by Talbot self-unloaders and dumped into a row
of twenty-two large pockets erected at the side of the spoil heap (see cross section a b,
Fig. 425). Each of the pockets holds about 200 cub. yds. of spoil, or together 4,400
cub. yds., which is a sufficient quantity to equalise any fluctuation between supply and
demand. .
The two collieries are each approximately 5 miles from the spoil heap. Ine
terminal stations of the two ropeways are indicated by squares at the right and left of
the plan. The terminals are connected with the hoppers containing the spoil by two
suspended mono-rail installations manipulated by an endless rope. The skips are filled
whilst travelling at the slow rate of 6 in. per second in front of the exit shoots of the
pockets, and when full are transferred to the ropeway stations.
The angle station of an important installation resembles somewhat an end station
of a normal ropeway, with, of course, the exception that the angle station combines in
itself the tail terminus of one section of the line and the head or driving terminus of the
second section.
Very frequently the second section of the line, or rather its endless hauling rope, is
driven or retarded from the terminal drum of the first section; this is especially so if the
first section has a sufficient incline to work by gravity, arid has sufficient power to spare
to operate the second section. Such an installation is represented in the diagram, Figs.
426 and 427. Here the hauling rope of the first or upper section is deflected by a