Mountain Democrat. [volume] (Placerville, El Dorado Co., Cal.) 1854-1860, 1859-08-13

| Was RoPE.-Ths great success that has attended
the adoption Of Wire Ropes and the immense saving e.
fsesd BY its application In mining, shipping and gene
gal purposes, and the Of mandatory In
Sen FfaDeseO have drawn attention TO lie existauee
and - much Interest IL felt 10 the matter y these Who
employ much rope, have obtained some valuable In
formation Oh the subject that is worthy Of publication
Wire rOPs h applicable and much used for hosting from
deep ShafS and Incline panes for guys stays ferry
ropes, and In fact for great variety purposes where
rope or ehih has heretofore besn employed having all
the pliahilits for eoiling drum working over
pulley, aud being nsthFd lighter than Hemp rope Of
the SAINT strength and lees than onsthird the weight
Of chain, Ito superiority them In huISting from
great depth can VI understood aud saving power
pended b sASly calculated. 1tS diameter 10 less than
Uns'hHf that Of Hemp Of the same strength. But We
psesivV another very great adSHnavS and those who
hing ropes In river mining aud ferries can apprsei
ate Il, via: 10 Unaffected By atmospheric ehanRsS-
that to say II does rot iArnR Of stretch according to
the state weather. the vet or dry situations Of
the rope, and once sptsd nd any one that can splice
rope, can splice ~ II 10 there.
We and that some tests have been lately ads ID sah
aheiSeO, at the nsbuiSetUrS Of AssStb. A. 9. Aaidis
Co between wire rope Of theit hAks and iOs IL the
best quality imported Russian Hemp .Ops and that thet
agree with similar experiments Of strength madV 10
Psnnsylvanis and In England, FROM which We extract
the following;
"HemP rope, Inches In eiFeumlsTsuea, Weighing X
lbs. per fAthOm brOke With dead strain Of a4O00 lbs
wire rOps, ~ inches circumference, weighing 81 lbs
per fahO@, broke with 500 lbs, showing that wire
rope possessed great advantage over hemp We have
chosen these sizes Of Fops from the fact that they are
common siass."
We suppose that the cost If wire rope ~ compared
with hemp, will erect many very materially. For
ample We will take the sane sIs ropsSths best quail
" hemp rope, 90 etc. per d. wire IOpe, - cts. per
Id. sH inch hs~p Welsh' per thOA N IbS. At % cts.
I'll so per faihom- Two and a.half inch Rirs rope,
weighs per aihu 81 Ibs. at - ets-Nl u per falhOm.
We suppose the maTkst vAs bat the GgvEss AbUvs
Globe To the aA Which so~s result In favor Of wire
Fse, aOsc s'peeiay when take into consideration
lie durabIy which 10 stated 70 bs three times that Of
hs~P. There 10 now wire rope working at the " Bay
State Quarts Mill" AZ Mtehigsn Blu6, Placer county,
which has besn Ia eouStant lowering rock 10 the
mill OvsT track 200 feet lOag, since the month Of De.
esubsr, 1857, term Of 10 months while Ia II months
tue SAus cUwpauy wore cut aud dVUtTUysd four inch
Manila rOpes.
Tbs wire rope now in there 10 ~ inches In cir.
eumfeTsDes, and works eapstan feet inches in
diameter We have e0nsldersd the matter for the hrne.
at Of our readers and doubt not that any further In
Formations will be. furnished By the nAnufaetursrs
NsS'rs. a. s. HalhdIs 4 Co., Of San francisco. We
commend the matter the attention ofthoss