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Collection: Books and Periodicals > Mining & Scientific Press
Volume 35 (1877) (426 pages)

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Page: of 426

An Illustrated Journal of Mining, Popular jence and General News.
BY DEWEY & CO.,
Patent Solicitors. SAN FRANCISCO, SATURDAY, AUGUST 25, 1877.
VOLUME xAXXV.
Number 8s.
Items of Interest from the Mines.
We give helow items of interest from prominent mines, most of whioh are collated from
letters of the respective Superintendents on filo
at the offices in this city:
In tho Hussey Cou. mine the stopes from the
120-foot level are looking well. Ore is being
hauled to the mil! to free ths dumps, so that
the ore from the 230-foot level can be placed by
itself.
The Leopard mill isrunning nicely, and every
rospect of continuing right along. The stopes
See the 5th and 6th levels are in good
shape, and will yield 25 tons per day easily.
Above the 4th level they are all opened out.
Operations at the Chollar mine for the week
ending the 18th, show the following results:
Numher tons extracted, 502 400-2000; Number
tons forwarded to mills, 487 700-2000, Average assay of ore mined, $21.75 per ton.
The ledge in the New England is about two
feet wide, and will pay about $30 per ton.
The Crown Point letter of the 20th, says:
The south drift, 2000-foot level, has now reached
a depth of 330 fect from starting point in main
east drift. This leaves us 120 feet yet to run to
connect with the joint pump shaft. The ground
continues hard and dry, and the drift is making
ood progress, having made 43 feet last week.
he joint pump shaft now lacks ahout 40 feet
on the Tae of our 2000-foot level. We have
artially reopened the 160, 230 and 300-foot
evels, The work thus far has been chiefly
clearing and straightening up old drifts, winzes,
ete. Atseveral points we have ’eneountered
small streaks and spots of ore, but as yet the
work has not been advanced sufliciently to determine its extent or quality. Some of the ore
is very good, though most of it is of low grade
and in mixed ground, requiring considerable assorting.
The various drifts in the Eureka Con. mine
are being carried forward at the usual rate, with
very encouraging prospects throughout the respective levels. The 3d level drift has passed
through the hard limestone formation mentioned
in last report and has come into easier working
ground with very good indications of ore in face
of drift, The 5th level ore body is looking exeeedingly well and still shows no signs of diminishing. The 6th level ore body shows some
improvement over last week and is looking very
well. The ore body mentioned as having been
struck on the 10th level shows decided improvement, and looks as though it would prove the
best body of ore ever found in the mine. The
main east drift has now been advanced 100 feet
since eoming into this ore, with the face of drift
continuing in ore. ‘Two cross-euts, each 25 feet
long, have been run through this ore at different points, and are still in ore, The orc in
drift and cross-cuts is quite rich, carrying a
good percentage of lead, and making it first-class
ore for smelting. ‘The furnaces have heen ruuning well during the week, yielding upwards of
25 tons daily, and aggregating over 353,000
pounds of bullion.
In the Justice the 1150-foot level is freed
from its watery element and operations resumed
on the east drift, the face of which shows very
fine stringers of quartz of a metal-bearing character; assays from $3 to $11 perton. The vein
on the 1000-foet level from south lateral drift
shows a regular and well-detined body of ore
containing considerable metal.
The wages on the Eurcka Cou. suit amount
to over $25,000.
BuLuion SHirments.—Since our last issue
shipments of hullion from prominent mines
have been as follows: Grand Prize, 16th, $13,300; Endowment, 16th, $3,098.63—total to
date, $8,378.80; Martin White, 13th, $12,022.63; Grand Prize, 16th, $13,286.60; 20th,
$13,300; Leopard, 20th, $3,600; Standard,
16th, $25,454; Con, Virginia, 16th, $178,368—
total to date, $276,762.27; California, 16th,
$135,756.83—total to date, $403,723.99; Northern Belle, 14th, $5,246.41; 16th, $4,753; Tyho
Con., 14th, $4,068—total to date. $7,099;
Northern Belle, 19th, $9,941.35; California,
21st, $159, 829.85—total to date, $563,553.84;
@on. Virginia, 21st, $185,807.67—total to date,
$462,569.94. .
New Method of Making Propellor Patterns.
Wo give herewith an illustration of a new
method of making patterns for propellors, so as
to get a turu serew by mechanical means, without the necessity of calculation and drafts. The
new method was designed by Mr. Otto Osten,
a mechauic of this city. As shown iu the engraving, a number of pieces of wood are planed
to the same size, and placed on a piece of iron
threaded on its upper end, so that a nut may
clamp them together. They are then spread
out to the required pitch and marked on both
ends with a pair of compasses. All the wood
outside the marks is then taken off. The pieces
are smoothed up, clamped and glued together,
and the pattern is made, After being clamped
the pattern is narrowed at the hub and rounded
at the tips to make it neater.
This gives all the curves trne with no guess
work, a3 is too often the case with the method
in vogue. It ought to reduce the cost of propellors, as the pattern is so simply made. Propellor patterns are the most difficult jobs to do
around a foundry; a true screw is difficult to
make, and then they are not always sure of being correct.
‘Several propellors have becn made as samples from this style of pattern. and can be examined at the shop of E. H. Thompson, 228
Main street. After the pattern is made, before
it is glued together, the ‘purchascr may examine
and see if the pitch suits him; or he can set the
pieces of wood before the pattern is made and
get exactly the pitch he wants. Where it is
desired to have the propellor curve inwards at
the tip te prevent slip, the pieces pf wood are
made a little thicker at the tips so that the
screw can be made accurately. We have seen
several of the patterns made on this principle,
hy Mr. Osteu, all of which were very correctly
made. Any ordinary mechanic ean make onc
aa it takes no scientific knowledge to prepare
plans and drawiugs before the pattern makers
take hold of the work.
Tue Eureka Seutinel saya: Senator Sharon
invested $30,000 of his surplus capital in Eureka
Consolidated shares last week, paying therefor
$36 per share. It was a private transaction,
and illustrates the mining magnate’s confidence
in the future of the mine.
Tue last bar of gold, valued at $9,000, has
been shipped from the Eureka mine, to San
Francisco. That completes the clean-ups,
That mine has done nobly in yielding precious
metal, and hundreds will regret to learn that
work has been suspended on it forever.
Coprrr.—The latest Liverpool quotations for
copper are: Good ordinary brands, £68 15s. to
£69; special hrands, up to £70 per ton; ore,
13s. 6d. to 18s, 9d.; and regulus, 13s. per unit,
The market has remained about stationary for
the past month.
Academy of Sciences.
The regular meeting of the California ‘Acaddemy of Sciences was held on Monday evening
last, Prof. Davidson in the chair. The following
donations to the cabinet were received: From
Prof. Davidson, magnesite from Fort Point,
San Francisco; from Dr. H. D. Cogswell, specimens of cement from the walls of the tower of
Ramleh, 12 miles from Jaffa, on the road to
Jcrusalem; algo, specimens from the walls of
Jerusalem; from the Acropolis, or citadel, of
Athens, 150 feet ahove the plain; also porphyry
from the mosque of Omar, at Jerusalem, From
C. D. Gibbes, six specimens of pyrites crystala,
auriferous, from Calavaras county, Cal. By exchange, six specimens of crystals of calcite,
found in Geodes, north of Church Buttes, Wyo. ming; and lead ore, from Bingham canyon,
Utah. From W. J. Downing, bones pieked up
at Purissima; and specimens of madrono, with
a curious growth enclosing a horse shoe hung on
. it ten years ago, presented as a curiosity. Dr.
, Kellogg read a paper on the following plants:
. Evigeron ericoides, T. and G., from Mr. John
PLAN OF MAKING PROPELLOR CASTINGS.
Muir, Utah, ‘white-flowered species; also, &.
cotula vephalum, and EH. stenephalum, variety
argentium Kellegg, from the same; new plant
from Cerros island, encelia humilis, from the late
Dr. J. Veatch; crepes integrifolia, from Dr.
Harkness, summit of C. P. R. R.
The donation of two fishes was reccived from
Mr. John E. Curry, collected in the Colorado
river, near Yuma, at the junction with the
Gila river; presented through Col. Geo. E.
Gray.
The following named gentlemen were elected
resident memhers of the Academy: A. Meade
Edwards, M. D., Geo. W. Dent, aud E. W.
Bowen.
Professor Davidson alluded to a letter received from Mr, Neber, of Humboldt hay, descrihing an invention for placing mirrors on
buoys at the entrance to harhors, so as to reflect
the light carried ata ship’s masthead. The
idea was hrietly illustrated by means of a diagram. Theinventor seemed to think that his
mirror would reflect all the light from the ship.
This was shown to be erroneous, as the mirror
would present only a point of light. This invention was not deemed of sufficient importance to
merit the investigation of the Academy.
Professor Davidson read a paper on a method
of determining the mean distance of the sun by
the parallax of Mars, The favorahle position
of the Earth and.Mars, to occur on the 5th of
September, would be utilized hy astronomers
to determine the celestial unit of distance,
Tue Imperial Government of China has
issued an edict against the use of opium, declaring its use was hringing destruction upon the
Chinese people. In addition to home production, opium is imported into China to an anuual value of over $40,000,000, principally from
British India,
Saws—A Fine Exhibit.
Just to the right as you enter tho pavilion is
one of the most extensive, expensive and instructive displays in the whole building, We
refer to the polished article that revolves upon
the partition and revolutionized the lumber trade
of the world,saws, Tastily arranged and of every
kind known to modern use, except the diamond
teothed saw used for cutting stone, there is no
more valuable or beautiful display in the whole
building than that of the Pacitic Saw Manufacturing Company, composed of Messrs. Spaulding, Patterson and Sheffield. The manufacture
of saws is one of the most ancient of all mechanical industries, they being in use ameng the old
Egyptians and Greeks. By the latter, the inveutor was deified with the title of Talus or
Perdix. With us, the manufacturer of the best
saw is dignified and hlessed hy all mill-meh,
and in this list come Messrs, Spaulding & Co.
He heing the inventer and patentee of the movvable teeth, so much in use in circular saws, has
greatly improved the supcerioiity of circular
saws of the old style used. The value of their
exhibit may be calculated by the knowledgo
that the largest circular is worth near $500, and
the smallest saw in the collection about 50
cents. The longest sash, or “‘muley” saw in
use in the State is by the Noyo mill, in Mendocino, which was madc on a special order for the
sawing of the large slab exhibitcd some years
ago inthe fair, The saw is 16 feet long, and
with it was sawn a redwood board 12 feet long
and 7 feet wide. The artof forging and tempering mill saws is one that can be acquired only
by the best and most intelligent werkmen, and
the low price of lumber, and the strong competition in the trade, have forced our mill-men to
employ the best and most improved machinery
in the trade. This has hrought Messrs.
Spaulding & Co’s. goods extensively into use, as,
heing right at home, any little defect in a saw
can be quickly remedied when hrought to their
notice, and any peculiarity required in them, or
adjustment to any special machinery, can he
made to order. They also make saw mandrels
and arbors a speciality. They have attached
helting to some 14 saws in their exhihit, so as
to display them in motion, though not at the
speed at which they would he driven when actually at work, and then playfully put up notices
to the puhlic not to handle.
Their factory is at Nos. 17 and 19 Fremont
street, where they have a very extensive establishment, and many thousands of dollars of
stock for inspection aud sale.
Fine Castings.
The AStua Iron Works, Pendergast & Smith,
proprietors, make an exhibit in the line of iron
castings, which, though a single piece, is of a
shape prohahly the most ditheult our founders
have to deal with. Itisa large propellor for
the steamer Ajax, and weighs 10,600 pounds.
It is fourteen feet in diameter, being the largest
in size and weight ever cast on this coast. This
ig the fifth one of this pattern built for the
Ajax. In running up the coast the steamer
mects a good miany large logs which get away
from the numerous mills up there, and she has
in each case broken her propellor by coming in
contact with these logs.
These iron works make a ‘specialty of propellor casting, having on hand patterns for fourteen different sizes. The large one referrred to
is set up 80 as to be revolved slowly, and several other smaller sized propellors are within
the railing on the floer.
In the same exhihit are a number of patterns
of ornamental iron work for house fronts. The
Stna Iron Works also make a specialty of this
class of work, orders for which have greatly increased of late years among us. The designs
shown are very handsome and much more ornamental than can he made durable in wood. A
great variety of these designs is kept on hand,
and, of course, new ones are made to order. Al.
together the display is quite creditable, and if
the example of the Attna had heen followed hy
more of our foundrymen the ae puhlic
would haye been more favorably impressed
with the extent of our iron nianufacturing resources,