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Collection: Books and Periodicals > Mining & Scientific Press
Volume 17 (1868) (428 pages)

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Page: of 428

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Subscription, 85 Per Annum, Single Copiesx, 15 Cents.
A Journal of Useful Arts, Science, and Mining and Mechanical Progress.
BY DEWEY & CO.,
Prtont Solicitors. San FRancisco, SATURDAY, AuGusT I,
VOLUME XVII.
Wumiber 5.
Table of Contents.
Beggs’ Ous Regulator—T!"e,
is eg Patent Baw Tevth
—ilts.
Mall's Petent Kaife—la.
The Institute Pavition.
The Appleton Buck. making
Estoblishment.
Catatel and Labor.
Carbolle Acid,
Fire and Water.
Making Mortar.
Alartins In Sen Francisco.
African Geograpty 30 HundMamctiasicaL . Miaceutany.—
Tho Steem Engine to be fuareded, Heavy Machine
vuls, Now ic of Operathig Stlde Vuivea
Rome sTIFtoO MisceLLany.—
Source of Light ln Flame;
(aaes trom Volcanoes; Oold
Bearing Rocks ; Phosphoreacent Ithotographs ; Experlment with Hydrogen.
MINING SUsMAhY—Comprising
late Inlelligence irom the
various couutles and districts In Cniltornia, Colorado, Oacotah, Idnho, Mon.
tina, Nevada, Oregon, New
Mexleo,
San Francisco Market Rates.
Stock Pricea—Bid and Asked.
San Francisco Mining Shareholders’ Directory.
San Francisco Weekly Stock
Clreular.
The American Saw Company.
The manufactory of this company is located at Trenton, N. J., with their principal business office at No. 2 Jacob strect,
N, ¥. ‘he saws made by thiscompany have
been in uso about threo years, working in
every kind of timber and in every climate.
They mannfacture two kinds of cireular
saws, ono with movable teetb, and the
other with an improved solid tooth. The
peculiarity of tbis latter method of constrncting saws, will he readily understood
by examining the accompanying figure.
red Years Ago
Electro-Magnetian,
Copper on the Rhine.
Sulur Heat as @ Motor.
Motion of the Eye.
Tho Stcom Plow at the Fair.
Cox's Cement Mechlne.
Colorado Grea.
Mining Profits.
Notices to Correspondents.
New Patents and Lnventions.
The perforations or half circular holes are
on 2 line with the wear of the saw, and form
the base of each tooth as the saw is gradnEMERECh’S PATENT
ally reduced in size. Many advantages ore
claimed for tbis mode of constructing saw
teeth, No gummiug is required; threefourtbs tho expense of filing, and consequently of tbo cost of files is saved; the saw
is less liahle to he hroken, as hreaks invariahly start from hetween tbe teeth, and from
a sbarp corner mado by the file. Should a
orack commence it can only hreak through
the bar between the holes or apertures, and
gonofurther. ‘Tho bars betwecn the holes
are soffer than tho cutting part of the saw
tooth, aro very tough and filo easily, so
that the corners of tbe file are uot worn out
as fastasin filing ordinary saws, while at
the same timo the cutting part of the tooth
is of superior temper. The bars can then
be either cut out with a cold ecbisel, or by
filing through tbem at each end of the bar
with o taper file; the har will drop out and
leave 2 perfect tooth again. Cross-cut and
other saws, as well as circular saws, are
made with this style of teeth.
It is claimed tbat wherever tbese saws have
been put into use, they have given the fullest satisfaction. Tbe construction and adjustment of the movable teeth saws, may
be readily understood by referring to tbe
company’s advertisement. All of these
yarious saws can bo seen at the office of the
company, 606 Front street, in this city.
In addition to their saws, this company
also manufacture a patent adjustable swage,
for spreading, sharpening and shaping the
teeth of saws. Theacecompanying illustratiou, Fig. 2, represeuts the mode of construction and operation of this instrument;
1, 1, sbow tbe adjustable or movable lips;
2, the screw to bold them firmly in position;
3, the sliding-pin contaiuing the V-shaped
die; 4, the slot or groove to admit of the
swage being used on @ fine tooth saw; 5,
shows the body of the swage, and 6 the
wrench. The movable lips are so constructed as to form tbe teetb of saws into
the most perfectshape, leaving them widest
at the extreme points, and on tbe under
side. The tool appears to be a most perfectly devised instrument for the purpose
intended. Both this instrument and tbe
perforated tooth arrangementare the inventions of Mr. James EK. Emerson, Superintendent of tho company’s works at Trenton.
occa -<)
Tse Missourr Tin Mives.—It appears
that tbo reported tin mines of Missouri are
still attracting considerable attention. Tbe
St. Louis Dispatch' of o recent date, says
ADJUSTABLE SWAGE.
that Phelps, Dodge & Co. of New York,
baye recently paid $50,000 for 1,200 acres
of land, supposed to ho valuablo for tin. A
St. Louis company has lately expended
$7,500 iu sinking sbafts ond putting up
machinery upontbeir property. A correspondent of the Dispatch expresses the opinion that the United States will soon be able
to export tin from the mines of Missouri.
Beggs’ Gas Regulator.
The want of something to regulate tbe
pressure of gas in service pipes, to tbe
proper standard for securing a bright and
steady ligbt, with an ecouomical use of the
gas, bas long been felt and acknowledged.
Gas, when burning under too high a pressure, is forced so rapidly through the burner
into tho atmosphere, that sufficient time is
not giveu forit to properly mix with the
SaaS
oxygen of the air, until at least a large
portion of it has passed heyond the influence of the heat derivable from the hlaze,
by which it should he ignited; tbat portion
consequeutly passes away unburned, and is
of course wasted. But under a proper
pressure the gas is all consumed, and the
intensity of the ligbt greatly increased.
When the gas is first turned on the proper
degree of pressure may readily be obtained.
But if turned on early in the evening, the
numerous additional burners subsequently
lighted and fed from the same street main,
so reduces tho pressure as to cause an imperfect light; again, if the quantity of gas
is increased hy turning off a portion of the
hurners, the pressure will be so great that
much of tho gas will pass away unconsumed. Tbus tbese changes take place
from bour to hour, as the number of lights
in any given neighborhood are increased or
dimiuisbed. You must tberefore either be
constantly regulating your gas, or your
lights will he defective and unsatisfactory.
which shall be sufticiently sensitive, and at
the same time have sufficiont power to do.
this regulating work for you. Mr. Eugene}
BEGGS’ PATENT GAS REGULATOR.
Beggs, of this city, after considerable study
and experiment, has finally sneceeded in
devisiug an apparatus which seems to aceomplish this purpose most perfectly. This
appiratus is connected to the meter, and
acts as a perfect governor or regulator to
the flow of the gas, and consequently to
the pressure with which it enters the hurners. When a single hurner, of many that
may bo lighted, is turned off, or an additional one turned on, it is quite surprising
to witness how
quickly this
sensitive and
automatic device adjnsts itm self to the de¥ creased or increased demand
for the illuminnating medium. No human hand could
more quickly
or accurately
adjust the subtle fiuid to its
accidental disturhance,
We give herewitb asectional
view of thisregulator, showing
its connection
with the outlet
pipe of the
meter, and exhihiting tbe interior arrangement of the
device. By referring to the
engraving, arepresents the
meter, and A the case of the regulator, B
isthe diaphragm, which in this apparatus
is made of 2 flexible metallic substance, instead of oiled silk, leather, ete., which
allows the gas to escape through its pores,
By the use of metal all leakage is avoided,
while the requisite delicaoy of movement is
at the same time seoured. The diaphragm
B has the post C passing through its center
and attached to the end of the lever D.
This lever is conneoted with the lever G
by @ link as shown, and the valve J is attacbed to the long arm of the lever G, so
tbat hy tbe intervention of tbe series of
levers, a very slight motion of the diaphragm very sensibly affects the valve,
The lever G has at the opposite end from
the valve, a counterpoise H, and the lever
D carries the adjustable weight /, which is
operated hy a rod #’ passing through a
stuffing-hox on tbe side of the case. By
means of this rod the weight # can he
moved along the lever D to any point, and
when once adjusted to any desired numher
Now the ouly practical way to temedy. of burners needs no further attention. A
tbis evil is to procure some arrangement)
curved lever Jis attacbed to a standard heneath tbe lever G, and has its short arm
attached to the lever bya link. The opposite end of the curved lever passes over
the top of the lever G, and carries a weight