The Portland daily press., 1875-09-30

At recent visit to the works of the National
Tube Works Company at McKeesport, Penn,
we witnessed the operation of making lap
welded tubes of such size and quality as to
call for notice. The company makes these
seamless tubes or pipes of any size up to four
teen inches diameter. And as every length is
tested by hydraulic pressure before leaving the
works, their strength and quality is fully guar
anteed. They have been found admirably
adapted to carrying water for the hydraulic
mines of California, Nevada and other West
ern states, and for water works which do not
require larger mains than IA inches The COM
pany have just completed an order for the Vir-
ginia City and Gold Hill Water Company of
Nevada, of seven miles of 10-inch pipe, the
most extensive order for large sIze that, we
believe, has ever been given IN this country
These seamless pipes, even without coating,
are more durable and are'also less expensive
than the riveted pipes; but the company APP
plies patent enamel to themithat, it is claim
ed, makes them almost indestructible, and, in
deed, the company is willing to guarantee their
durability for any length of time. The append
ed reports by DR.. S. Dana Hayes, Massachu
sets State Assayer and Chemist, and Professor
Otto Wuth of PiJtsburg, Penn, fully establish
the claims of this pipa to durability. We COM
mend it not only to our gas and water compa-
MES but also to our mine owners and others
who have to use or convey impure water, SUCH
for example, as in many anthracite Mines
These large pipes would make excellent screen
would doubtless be of great advantage for coat
ing the exposed iron work about the mines.
In bringing the matter to the consideration
of "those whom it may concern, we believe we
are doing consumers as well as manufacturers
a service
81 have recently made series of tests of
your ename,ed pipe for the purpose of ascer-
tanning its value as service pipe for conveying
water and other fluids, and now submit the fol-
Lowing brief report of the results obtained:
Portions of the enamel covering itself were
first removed from several pieces and submit
ted to chemical analysis to determine the pres
ence of deleterious substances; but the results
OF these analyses are entirely negative, as there
is nothing of this kind present. The pipe is
made of wrought iron, covered, inside and out
side, with an elastic, enamel like material that
does not contain any unwholesome or objec-
tionable ingredients
"Its durability was then tested by exposing
different pieces of the pipe to the solvent action
OF hard, soft and sea waters, alcohol, aud other
| fluids, for many days, and finally those fluids
were boiled in the pipe for several hours in each
case-the object of this boiling being to obtain,
| as nearly as possible, in comparatively short
time, the effect produced in the pipe by long
| continued usage. These tests have been very
| complete, and l am quite surprised at the du-
| rability and power of resistance of the enamel
| covering determined in this way. 1t has not
| failed in any trial with natural waters in my
Iduid1UIy, duu III Las WltuSlOOu GU6 dCJlOu OI
boiling corrosive fluids for longer time than
| specimens of other water pipes now in common
| use.
| Il commenced this investigation with some
doubts about your enameled pipe, but the severe
tests which have employed prove that it is
| perfectly harmless and possesses great durabIli-
ty, these being the properties of most impor-
tarce in water pipe.
| S. DANA HAYES,
State Assayer aud Chemist. Massachusetts,
II have maze a complete series of tests in
order to ascertain the quality of yonr patent
enameled pipe, and found that the enamel COW
| erng perfectly both the inside and the outside
of the wrought iron pipe, is not in the least
affected by the action Of alkalies, acids, salts
OF any imposition, alcobol-iu fact. any Ii
| qulds which in practice are apt to be conveyed
| through the pipe. The enamel itself contains
no de eterious substance whatever, and even if
it did it would not make any difference, as not
a trace of it will become soluble. Pipe so en-
ameled is specially adapted for water and gas.
o. WUTH"
N. Z. Engineering and Naming Journal
A SINGLE trial of Mrs. Winslow's Soothing
| Syrup for children teething, never yet failed 10
relieve the baby, and overcome the prejudices
OF the mother. 1t will relieve the poor little
sufferer Immediately. 1t not only frees the
child from pain, but regulates the stomach and
bowels cures wind colic corrects acidty and
cures dysentery and dlarrh@a Gives rest and
health to the child, and comforts the mother.