New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1865-08-15
We have not space to examine the matter in de-

We have not space to examine the matter In de-
tail, but must state that in addition to the wonder
full strength, increased efficiency and economy Of
room and material achieved in this form of boiler
plate, it possesses one Characteristic Of the
highest importance to the marine engineer, namely,
its non-liability to "scale' as it is termed or, in
other words, become incrusted by deposit from the
salt water The absence of the crowded stays in
this boiler also removes all tendency 10 "foam."
Below, We give reports of tests made of this iron
by Messrs. Hopper g. Douglas Government In
spectors, and Mr.. Coryell, of the Dry-Dock Iron
Works:
OFFICE OF TIE {. 6 Local INsPEcrog OF STEAMERS.
No % Pine St New York, Aug. 9, 1861
This is TO certify that have this day tested NJ T.
Richard Montgomerys Corrugated Boiier Areh loL
ocean steamers. the corrugated ron USED IN .,s arc1
being made without the of any stays or braces what
ever We have subjected to hydrostanc pressure OF
10 pounds per SQUIRE inch, without any change OF
form. while the present boilers now in are made OF
three.eghths incn iron plate having TO be heavily
braced and stayed throughout to Withstand the pres
sure above named showing a saving OF one nan the
thickness OF iron In the corrugated boiler, ana
greater amount OF heating surface. We wo1d consider
great saving In economy and weight Tor the use Oh
| steamers over the Old.idshiOled Hat plates.
Yours respectfully, JOEL HOPPER,
A. ID. DOUGLAS.
L. S Inspectors Of Steamers.
Richard Montgomery, esq
DRY Dock IRON WORKS. NEw-YoRK,)
OFFICE. No. 435 EAST. TENTIisT. Z
NEw-YoRK, Juiyis ls6o.
R MONTGOMERY, esq.
DEAR SIN: have built and tested with lis n pres
sure of cold water the section OF an arch for the or
binary surface for marine boilers the arch Deing uu
from yOnr patent corrugated DOiier IRON anu ~ VIZ W
withstand 300 n per square inch without change OF
shape, proving its eapabilty to resist pressure
STAYS. ,:..
of onehrd less thickness when the corrugated iron Is
used. When YOU combine these two important Iacls
it proves large saving in the construction OF poler
The saving of weight in boiler maze OF eOrrut aea
iron would weigh onc-thrd less than one of equal heat
ing surface made Of fiat iron. Yours respectfully
Mr.. Montgomery is also the inventorof apecular
form of BEAM which is the highest and at the same
time the strongest one at present known to the
arts and equally applicable to all practical purposes
as T or angc-iron. The testimonials TO the merits
OF his inventions are from tho highest authorities
among whom may be named:
Charles q. Stuart Engine 'r.in.Chief Of the Navy
.Iosenb Belkpap of the Neptune Iron Works; James
Jackson. Paterson Locomotive Machine Company;
John Breasted aud Edgar Majory Allaire VOTES
James Murphy & Co., Fulton Fonndery; Geo W.
Quintard, Morgan Iron Works; w, W. vanderbilt
Engineer Pacific Mail Company; Fletcher, Harrison
& Co, North River Iron WORKS. &c, &c.
If there is any one subject in which the whole
community is vitality interested it is the safety OF
steam-boilers and we take pleasure in introducing
Mr.. Montgomery's valuable invention as one OF
public importance.
Full information on the subject can be obtained
of Henry l.. Pierson, esq., No. "a Broadway, and
of Messrs. Kemble g. Warner, Nos. 70 and %
West-st