Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1906-03-17
THE EDWARDS coNvEYER.


For delivery OF ore from the mine
SHAFT 90 the mill cruShers "a the Lin
coin mine in the Pearl camp OF Boise
county Idaho, says "a correspondent Of
the Mining Reporter, there Is IN use an
Interesting and efficient type Of con-
veyer, II IA the origination of the
superintendent, George 4 Edwards. Its
satisfactory service OF over six months,
togc ther with It's cheapness and sim-
pliciiy Of construction and operation.
cumluouds It for consideration at plants
whore expensive rubber belt conyeyers
are used, as vel as at mines where
short surface or aerial trans are con-
structcd for the conveying OF ore. 1t
would seem that even longer trans,
embodyng an enlargement of or q
slight variation In the Edwards type
Of conveyer herein described might be
quite economically built and operated.
This conveyer consists of q number
of overlapping steel plates fastened to
two endless steel wire cables moving
over double sheaNe wheels Of four foot
diameter, the double sheaye wlieels
consisting Of two single sheayes at
tached to one and the same shaft and
set twelve inches apart. The f-l6-lnch
steel plates, of a width OF is inches
with one-inch flange on each side, are
secured to the %-inch steel cables by
means of two y inch elevator or r
bolts at their side centers and ~ Inches
apart. The plates are IL inches In
length The nut ends of the bolts are
on the inside bottoms OF the plates,
so that in the event Of Il plate becom-
ing worn or broken II may be easily
and quickly replaced. The plates over
lap one another about one inch, thus
. loo Han aLTat ~
receptacle for the ore. As the plates
pass over the mill-end sheayes and as
sumo a vertical position, a ready dis
charge OF the ore therefrom Ia made
to the grizzlies, which rest directly over
the crushers,
The sheave rims are grooved to At tho
cables. and the rim ends Of the sheave
spOkes are dovetall-grooved and pack
ed with braided hemp to prevent their
unnecessary wear by the bolt heads,
which may slightly project. The numer-
Gus rollers at the towers supporting the
conveyer are also groOved and notched
10 permit of smooth moving Of the
cables and plates as well rs to fore
cude undue wear of either rolls cables
or plates. The rollers are 20 inches IN
width with diameter of inches. Be-
low the sheave wheel at the mill end,
tNeIt Is set lplltI oNtI which the
plates. as they pass are cleaned OF any
mud cinging thereto,
The total length OF this conyeyer or
tram is $50 feet, with a difference In
height between ends Of about 70 feet
1t Is powered by means of a &-lnch
wire rope drive (the drive wheel 6 feet
IN diameter, being placed al the mill
end attached To- q Countershaft from
the main crusher shnftlng and requires
scarcely any power IN It's operation In
fact. when the plates are loaded II IS
practically selt-nneratlve and may even
he made to develop power II necessary
The conveyer travels at the rate Of
about 100 feet per minute. but by in
crcasing the driving power may be
| made TO travel as fast as /, 600 feet per
minute. Its initial cost Is about one
| half that OF the ordinary rubber belt
! conyeycr. and the expense and loss Of
! time In repairs Will II Is believed. be
| considerably less. During It's constant
use Of six months II has given no trou-
bic in any way. This conveyer at the
| Lincoln mine was practically all mad
| on the ground, only the steel plates and
! pulleys having been made nj Boise and
! Nampa respectively. For supplying tho
| ore for the 225-ton milling plant IN.
| conveyer IL no, in use more than six or
| eight hours daily.
Photographs. one showing the entire
| length Of the conveyer between the
mine ana mil. and one showing the mill
| end of the conveyer as II discharges the
ore 20 the crushors are herewith re-
! produced