Bismarck weekly tribune. [volume] (Bismarck, Dakota [N.D.]) 1884-1943, 1890-10-24

draught consists of the common upward
current through the CRATE n a down
ward one. composed of heated air, which
meet in the burning fuel and escape later
ally through a break and perforations in
the walls of the fire pot, near the bottom of
the latter.
In the mechanical ingenuity by which
you induce this down draught of hot
air lies the great "alue of your invention.
This you have effected by providing double
narrow space between. When at work the
interior wall of the combustion chamber
is, of course, heated by the fuel it contains,
as the gases escape through perfOratiOns
provided for the purpose to the exterior
wall where they flame up against it, this
wall becomes heated also. Into this great.
~ heated space between walls you intro
duce air by a feed pipe leading from the
exterior of the stove. Quickly heated, the
air ascendS II seeks access to the ON
bustion chamber through perforations pro-
vided for this purpose near the top Of the
interior wall, and thence descends through
The fuel to seek escape laterally through
the break and perforatiOns near the base of
the containing walls, as heretofore noted.
While the introduction of cold air between
the walls must diminish somewhat the de-
gree of heat radiation. still by protecting
the combustion chamber from the direct
inflow of cold currents of air you maintain
a more constant and more nearly complete
combustion, and the compensation thus
gained must outweigh many times the loss
in heat and radiation referred to. Briefly
restated: The combustion chamber being
protected from direct draughts, becomes in
a measure a gas generator out OF which the
burning gases escape and surround the eX-
terror wall Of said chamber, thus making a
beautiful as we'll as a very effective fire.
While no comparative tests were made
on this first day, ii however was evident
that your device was doing more work than
a like amount of fuel in al ordinary stove.
device would utilize Ignite, a fuel with
which l have had experience. To confirm
or disprove his hastily formed opinion, l
caused to be shipped from Bismarck, n.
| D., to your residence a barrel of Ignite and
on July 18th superintendent a comparative
used OF like pattern, one with and one
without your device adapted thereto.
Kindlings and 8 pounds of bituminous
coal were put into the common stove, and
a like amount of k~indlings and s pounds of
Ignite into the device. copy from men,
Orandum:
2:06 o'clock p. m, match applied, stoves
cold; 2:59, biscuit put in common stove;
3:04, biscuit put in stove with device; 9:lS19s,
biscuit removed from common stove, well
baked; 3:l9, biscuit removed from stove
with device, we'll baked.
The time of baking with common stove,
Az minutes, and in the stove with the de-
vice, Is minutes. During the test the stoves
were in adjoining rooms, the pipes from
each leading into the same chimney.
The common stove stood close against
the wall, the other against the wall oppo-
site to the chimney. The former commu-
nicated by a short and the latter by a long
pipe with the tlue of the chimney. Not
withs anding the disadvantage the device
thus labOred under, it did quite as good
work with the Ignite as the common stove
did with the bituminous coal, with this
ditference-the Ignite lasted longer be-
fore dying down.
On the 18th inst. another test was made,
this time with Ignite in both stoves, with
both placed on an equality with respect to
length Of pipe. l copy from memorandum
made by me at the m
Kindlings and eight pounds Ignite placed
in each stove. both cold.
l:54 p. M, match applied to patent stove.
1926 p. NJ, biscuit put in oven.
2:S4 p. H., biscuit removed, we'll baked.
Time 9 minutes.
243 p. M, %replenished fire with eight
pounds of Ignite.
1854 p. NJ, biscuit put in n baked in
seven minutes.
1902 p. M, match applied to fuel in COM
mon stove.
1886 p. NJ, %replenished fire with eight
pounds more fuel.
4:20 p. NJ, Ignite burns with much flame
in places n smOthers itself by fine dis
Indignation in other parts of the fuel cham
Der.
4:24 p. M, biscuit put in oven.
$40 p. m, evident that sixteen pounds
Ignite will not, in this stove, generate
sufficient heat to bake biscuit. Biscuit
were then removed to oven patent stove,
and although no fuel had been added to
this stove since 2:49, the biscuit were quick
ly baked.
During the test the Ignite was not dis
turbed in the device with poker. and it
continued to burn with a steady white
flame, and on my coming away at 4;45 was
still, without additional fuel, doing good
work.
After a careful examination of the speci-
fcations going with your several letters
patent-25,o72, 425,222 and 426,s2o-and
mature consideration OF the foregoing tests
in connection Herewith, I deduce the fol-
lowing:
l. Your invention is simple, inexpen-
sive. and can be readily adapted TO general
use.
2. 1t will greatly increase the value of
all GOALS by economizing their use from 80
to so per cent.
s.. It will give to Ignite the value Of the
best bituminous Goals. That is, Ignite
used in your device will do fully as much
work as the best bituminous Goals without
IL. Inc hlRh percentage OF moisture IN
this fuel (22 per cent in the kind used in
the foregoing tests) probably afforded a
%supplyof hydrogen gas in the combustion
chamber, which may account in part for
the good work and approximately com.
plete combustion witnessed.
4. As adapted to the boiler furnace, your
invention gives a better promise of abating
the black smoke nuisance than any device
heretofore employed for that purpose.
In conclusion L may add that the utillza-
ton of Ignite, as demonstrated, becomes a
fact of incalculable value to the inter.
mountain and plains region of the west
and gives to your invention great value.
If It should also effectively abate the
black smoke, which hangs like a pail over
!, Our cities and shames the scientific attain.
ments Of the age, and this 1 believe it will
do, then still greater advantages will be
gained.
l therefore confidently recommend your
invention to the attention of capitalists
and suggest that you seek assistance tt
thoroughly test the same by practical use
in stoves, heaters and boiler furnaces.
J, Yours truly,
Il S. w. GROEsBECK,
Captain U. S. Army.
ST. PAUL, Mimi, Aug. 10. 1890,