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Collection: Books and Periodicals > Mining & Scientific Press
Volume 39 (1879) (446 pages)

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Page: of 446

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TMY 135-3 36 EXPOSURES
INN ID
Ye"’e"e* «e
e.
Mining, Popular Science and General News.
BX DEWEY & cO.,
Publisheres.
An Ilustra ted durnal of
~ SAN FRANCISCO, SATURDAY, AUGUST 2, 1879.
VOLUME XxXXIX
Wumber 5,
An Ingenious Automatic Ventilator.
We illustrato herewith an ingeniously devisr
and curious automatic ventilstor, recently po
ented through the Mixing Any Scientir
Press Patent Agency by Frank J, Crouch,
Eugene City, Oregon. Mr. Crouch is a you
man of great ingenuity, and has invented
number of useful appliances of different kin¢
This ventilator is his latest device. It is
tended as an attacliment to windows, transon,
ete., by means of which the opening or cl:
ing of the window or transom is automaticay
accomplished, in accordance with the temper
ture of the room.
The sash or transom is hinged or swiveled>
the frame, so ag to swing in a circle on a cent]
axis, and thus be opened or closed, This sht
or axis is continued through the window frac
on one side. On its outer end is a pinien, whh
nnites with a small spur wheel, as shown.
On the lower part of the frame is secureda
pipe-cylinder or chamber, on top of which ia
thin metallic plate. Ou top of this plate is aother of the same size and shape, the two plas
being secured together at their edges, and e
apace between them being filled with sulphic
ether, turpentine, alcohol or similar sensite
substance, The tube or cylinder opens into e
chamber formed by these two plates throih
the lower plate, and also contains the ethenr
other substance. To the top plate of the dk
is secured an arm, the upper end of whiclis
fastened to a crank on the spur wheel.!
Now, when the liquid in the cylinder ed . °
hetween the plates or disks expands, the ples
are expanded as they admit of a sensible sprg
apart at the centers. As they are expandedr
forced apart by the expanding substance, ie
arm attached to the upper plate operates 1e¢
erank and gear wheel, thus rotatiug the pion
on the shaft or trunnion carrying the saslor.
transom, and the sash or transom is thus swag
open, As tho liquid cools, th reverse is 1e
case, and the sash is closed.
The plates and cylinders are made prefers y
of glass, as it absorbs heat readily, and nonof
the chemicals used will corrode it. No danrous effects are preduced shonld leakage ocr.
The plate and cylinder are placed inside 1e
the room so as to be affected only by the tnperature inside. When the room is heated 1e
resultant expansion of the plates acting one
gearing will open the transom, and as the licid
cools, the plates come together, and close ie
transom, thus regulating the size of the opemg
through the transom or window in proportic to
the temperature of the air. This durable id
self-acting ventilator is adapted to hotels, ieaters, Sele and private dwellings, where od
ventilation ie desirable. On one side of he
window frame may be attached a gong, sorranged that in case of fire or when there is ny
unusual heat, the movement of the sash ill
ring the bell to attract attention.
Exonizine Woop.—W. E. D. desire to
know ‘‘the details of making the so-cied
ebonized wood for furniture and cabinet wk.
What kinds of woods can be used and how he
finish is put on,” 1. The wood may be ced
black by copperas and nutgalls, or hy japan ng
with two coats of black japan, after which irnish or polish, or use size and lamphlack, p yious to laying on japan. 2, Collect lamp! ck
from a lamp or candle on a piece of slate, can
ordinary China dinner plate. Scrape ofihe
deposit, mix with French polish and appl to
the object in the ordinary way. Any kix of
wood can be used.
Derarturr.—We notice the departui of
Mr. Henry Woodcroft Hammond from Virnia
City for England. Mr. Hammond has for nny
years had large transactione in the wire»pe
It is a sorrowful but ackuowledged fact that
when an important enterprise of any kind is inaugurated aud begins to establish itself upon a
paying basis, the bright auticipations of the originators are sat dowu upon by tho ubiquitous tax
collector. There is neither rhyme nor reason in
any iudirect crushing or sinotheriug of any business to satisfy the ever increasing and never
ending demands of tsxes, The goese that lays
the golden egg is killed to satisfy the rapacity
of tax requirements. It seems sometiines that
we need more tea thrown overbeard by caricature Indians in order to stop the inequality of
our burdens. Our remarks are, to a certain extent, applicable to the assessmeuts npen the
quicksilver production of California,
Five counties in this State contain quicksilver
mines, and, with their productiou for the psst
three years, are as follows: Napa county,
Redingten mine, 25,494 flasks, assessed value
j yj
Quicksilver Production of California, . immense capital may be sunk in mining property,
and yot would be valued ata high figure, too
high to be compatihle with justice perhaps, and,
in the case of our quicksilver mines, very far
from the constitutional spirit of equal taxation.
Our quicksilver mines deserve to be fostered,
since their past has proved to be of so much importance to our general mining intereats.
Footprints of Inventors.
If we could drop out of mind the mechanical
world of the present and have the world of 100
years ago revealed to us, a vast and comparatively trackless plain would represent the industrial condition of the time. The only footprints
visible are the shadowy ones of the geniuses of
the day, searching for the connecting link between mind and matter. Coping with the material difficulties and laying aside all personal
considerations, these footprints in the sand
beeome more distinct as time approaches the
CROUCH'’S AUTOMATIC VENTILATOR.
per flask $15.89; Lake county, Sulphur Banks,
30,849 flasks, assessed value per Hask $10.08;
Lake county, Great Western, 14,266 flasks, as.
sessed value each $9.84; Sonoma county, Oakland, 4,687 flasks, assessed value per flask $7.11;
Fresno county, New Idria, 17,846 flasks, assessed value per flask $10.74; Santa Clara
county, Guadalupe, 18,952 flasks, assessed value
per flask $13.36; Santa Clara county, New
Almaden, 56,488 flasks, assessed value per flask
$17.66.
It would not he true to say that the stoppage
of work on some of these mines is due wholly
to the tax upon an enhanced valuation. But it
is one of the reasons, Quicksilver has commercial value capable of being definitely ascertained,
yet, in the valuation put upon the flasks, there
are differences amounting to $10.55. New
Almaden having an assessed value per flask of
$10.55 more than the Oakland of Sonoma
county.
The New Aimaden has its entire property assessed upon a valuation of $997,645, while all
the other mines combined are valued at ouly
$1,334,894, and besides assessed per flask at
$17.66, The total production of all of the
nine g, .
preseut, until they become the footholde of
progress, the,beaten track which has led modern
inventors to the apotheosie of mechanical ingenuity. The world would have existed without the inventor, a weakly, eickly world, Hamlet, with the part of Hamlet omitted. The
elements of nature held in abeyance, awaiting
the inventor’s wand, would have rusted in
oblivion, if poverty, toil and persecution had
driven the inventive genius of mau fom the
field. The element of light latent in a multitude of substances came forth obedient to the
command of an inventor, and found a foothold
towarde progress in the lucifer match. The
means of creating light called forth the inventor
who could find a use for the application of that
element, and illuminating facilities have developed into the brilliancy of the sun through
the medium of that fearful power, electricity,
And this is only a emall portion of the inventive
progress of man, Through all of the various
gradations of progress, from the faint footsteps
of the early inventor to the steady, heavy tread
of the inodern inventor, each one has established
a foothold for the progressive discoveriee of him
who came next in the order of tine, until it
Mineral Exhibit at the Mechanics’ Fair.
That the mineral products of this coast should
be as fully represented as possible at the approaching exposition of the Mechanics’ Inatitute is a proposition too obviously true to require argument. Of all our material prodncts
none moro deserve to find a place in a grand
display of this kind than these, none others
being so generally interesting or thoroughly
typical of our natural resonrees. Whatis being
done officially to meet this necessity we are not
fully advised. Dr. J. I. Bleasdale, who has for
some time past been engaged in making a collection of minerals on this coast, will, we understand, place the same on exhibition at the
Fair, This gentleman’s collection, which is
quite large and considerably varied, contains
some specimens unique and rare, and will, so
far as it goes, constitute an attractive feature
in this line. This is a matter, however, that
shonld not be left solely to private hands to be
looked after, but should receive attention from
the management itself,
There is in this city the material for making
a creditahle display in this department if only
Proper measures are taken for obtaining and
preparing it for the use of the Institute, The
Geological Society of this State has been working quietly for several years gathering ores,
fossils and metals of every description. They
have now on hand an immense quantity of these
mineral treasures, boxed up and stored in a
fire-proof building for safety. For the purpose
designated the entire fruit of their labors would
be placed at the disposal of the Institute, the
Society being assured, of course, that they
would be properly cared for and ssfely returned.
These specimens to fit them for exhihition would
require to be laheled and placed in cases,
a work that could be safely committed to none
but professional hands. To command the services of a proper person for this duty a suitable
compensation would have to be paid; and here
is where we suspect a trouble would come in,
defeating the end here suggested. The management of these and similar expositions have
been in the habit of getting this sort of service
performed gratuitously, and looking for its continuance may be therein disappointed, for the
self-sacrificing spirit of even the most enterprising becomes after a time exhausted. But
thie shonld not suffice to keep this valuable collection shut out from the public eye, Its presence would no doubt increase the receipts of
the Institute heyond the coet of eecuring it.
In addition to this collection of the State
Geological Society, or, in its absence, the splendid collection of Henry G, Hanks, might ata
amall outlay be secured for the uses of the Fair,
This collection ie very valnable and extensive,
having been selected witb care, and filling 40
large show cases. The Institute could hardly
do less than procure this, engaging the owner
‘to look after it while being displayed, and also
give his attention, if need be, to other minerals
on exhibition.
In our minerale repose the sources of our peculiar wealth, and to have them omitted or madequately represented in a display of this kind,
would evince a want of appreciation of their
importance as well as a lack of State pride.
We require these mineral products to be presented for inspection on these public occasions
not somuch as curiosities as for their economic
and commercial values. Many of them are becoming important in our manufactures and useful arts and should therefore be studied and
made widely known. In a large and utilitarian
sense iron may be more valuable than gold, and
a paving-stone of more importance than a diamond,
Bros for supplying the U. S, mints with eilver
bullion were opened on the 24th inst., 600,000
onnces were offered. San Francisco hids were
declined, heing iu excess of market rates. The
largest proportion of silver coinage during the
month of August will be done at the Philadelphia