The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1917-11-29

going, but in addition it might be well
10 state that wire ropes are construct
ed To take care of certain loads. and
when these loads are exceeded the
steel in the rope must suffer. The
rope as made has certain Law and
the method of attachment to the load
mas great deal to do with the run
ning out of the lay and stretch of the
rope. This should not be confused
with the material itself. There are
several methods of fastening ropes to
the Load and it can be done by means
OF either sockets or clips. Fastening
by means of either of these methods
can be done in such a manner as to
break the rope before the connection
gives out In the case where sockets
are used it was formerly thought nee
essary to turn or bend back the
strands or wires into the basket of
the socket. This method is now being
replaced by a process Of opening the
wires in the strand of the rope which
IS to be socketed, thoroughly cleaning
them with muriatic acid, cut down
with zinc and pouring in molten zinc.
Tests of this method of socketing
strain on each individual wire can be
depended upon. However, it neces-
states taking great pains and GER
ries with it all times the danger of no
possible means of inspection. The
connection made with clips, if proper
ly applied, is equally strong, and care
flu inspection can always be made of
such fastening. The latter connec-
ton should be made with the curved
section of the U-bolt clip over the
short end of the rope This insures
more safety, az there is then no in
dentation on the main section of the
safety point of view it is preferable
to sOcketing
| believe that all users of wire rope
appreciate the value of protecting the
rope from mine and other injurious
waters which corrode and take into
solution the steel of the rope, but it
might be well to state that the most
dangerous element is often neglected.
In mine water the sulphur has been
taken into solution, resulting in the
formation of sulphuric acid and when
this acid attacks the steel there is
liberated hydrogen which causes
great deal of trouble In
order to keep corrosion at a minimum
il is absolutely necessary to cover the
rope, or at least fill the interstces of
the rope, with some sort of protec-
tive preparation. A mineral COM
pound of the right consistency has
been found to be the proper material
to use for this purpose.
In dealing with the problems in
which wire rope plays an important
part it is most essential that a man
be employed who is familiar with the
construction of wire rope and it's ap-
plication. This knowledge has result
ed in the employment by most min
ing companies of an inspector. The
duties of the inspector are too numer
Gus to mention, but the mere fact
that there is such a position empha-
sizes the point that wire rope is part
of the equipment that requires eX-
pert knowledge, careful handling and
the most rigid inspection.
In conclusion, | wish to state that
the points covered in this paper are
the results of practical experience
covering period of nearly three
fourthS of a century. During TINS
time the merits of suggestions offered
have been proved by test and actual
service and have been adopted as
standards by our engineers.