The San Francisco call., 1910-05-29
DOW'S MACHINERY
HAS MADE name
Pumps and COmpressOrs Are
Used in Many Great Plants
in the East
Ocean Going Steamers Install
remarkable Appliance of
Local Firm

That made in San Francisco" ma
chinery is holding its own in the iron
and steel world is manifested in the
pumps and compressors that have been
made by the George Z. Dow pump and
engine company for the Newport News
ship building company, the Standard oil
company for both marine and station
airy work. the Union oil company, the
Associated oil company. the San Fran
cisco and Portland steamship company,
the Oceanic steamship company and
many others.
The company's recent installation in
one OF the large ocean going steamers
illustrated herewith shows Dow hori-
zontal duplex steam driven air COM
pressor Of the crank and fiywheel type,
which was specially designed for sup
plying compressed air for atomizing
= fuel OIL The compressor will supply
sufficient air for 500 horsepower boilers
and is so designed that either side may
be run Independently Of the other The
air pressure to be varied TO accommo-
date the requirements the machine
being lways under the control of COM
bined speed and pressure regulator. 1t
is Of such design as 70 give a maxi
mum vOlumetric efficiency exceeding
shat OF any other machine in the world
being built in ell sizes and types for
any pressure desired. both simple and
compound OF OF the single and multi
stage design.
SAVES OIL on SIERRA
One OF them recently installed in the
steamer Sierra Of the Oceanic steam
ship company saved in its regular run
400 barrels Of oil. IL also was the
means Of cutting the trip down %
hours.
Ia many respects ii is similar to the
compressor that has made Dow's name
for cOmpressOrs and pumps such
bugabOO 70 the eastern concerns max
ing machinery along similar lines, so
far does IL surpass them in durability
and graceful outlines. And as the
successful operation of air compress
ing machinery depends largely upon the
operation of the suction and delivery
valves, this feature is made for the
highest power OF efficiency. OF the
puppet valve type. wear and breakage
OF valves have been two great sources
Of annoyance. consequently large wear
ing surface and great strength are the
features TO be sought after. The cage
or seat is made Of good quality of hard
phospnor bronze and the Y valve proper
IS Of tool steel This combination of
design and materials is as near inde-
structible as can be made. The valves
are located radially around the air
cylinder head tn be water jacketed,
which presents a large cooling surface
to the air under compression at the
point at which the temperature is the
greatest. namely at the end of the
stroke. The cylinders are also water
jacketed and are so connected with the /
IN
circulation. OF course. the steam end /
In AL its details is built according to |
modern engineering practice.
HOME PRODUCT EXCELS
The Installation on the Sierra illus
trates more than anything else, and
what the engineering world is begin
ninG 10 ind out. that made in San
. Francisco machinery excels in dura-
-bility and efficiency, because of the
higher standard Of skill of the manu-
facturer and workmanship that of any
other city in this country. We may be
restricted in our manufacturing condi-
tions. but the standard of work turned
out in the San Francisco product shows
that we can do the work if we can Sc
cure the contracts. That is why it is
urgent that every man who needs ma
chinery or any other manufacturing
product made on this coast should pat
Tonize the home industries, which is
50 often urged but little carried out.
The Dow cOmpany's pumps "a cut of
one being shown on this page as welll
are even better known all over this
country than are the compressors. Be
> ing driven electrically. the one here
mentioned has a capacity of 100000
gallons per day for a lift of 800 feet.
They are made in all sizes for higher
and lower lifts, are seIf-contained,
mounted upon continuous bed plate and
require a minimum amount Of atten
tion.
The schrader iron works company
has secured the steel contract for the
new garage in Golden Gate avenue be-
tween Taylor and Jones out of Grim &
Scotts Office.
The Pacific gas and electric steel con-
tract was let TO the Western iron
works. The steel viii be used on it's
new station at First and Market streets
in Oakland.
LOCAL STEEL CONTRACTS
The new Mission turn verein steel
> contract is being fabricated by the
Central iron works. which has also Sc
cured the steel contract for the Home
state bakery out Of Theodore Lencen's
Office.
The AIortenson construction company
received the contract for steel for the
new Dorm building out of W. II. Weeks
Office. at Clay and Davis streets.
Brode's iron works has secured the |
contract for the steel in the construc- !
tion Of the Pierce building in Mission /
street out of Matthews architect Of !
fce.
The firm Of the Pacific rolling mill /
company has perhaps secured more To- |
cal steel contracts lately than any other |
local or eastern firm. receiving as it |
did the steel fabrication for the c. /
Meyers estate building out of NJ ]. |
Lyons Office; the steel fabrication and /
for Drcf hf,flE
Washington street and Montgomery
avenue. the new Pacific gas and cleo |
tric station steel contract In Alameda, |
the Wilcox realty company's building /
out OF Architect Pissis' office; and the 1
CoIeson & Co.'S building steel at Eddy /
and Taylor streets out OF Architect r. /
". Harts Office.