The daily dispatch. [volume] (Richmond [Va.]) 1850-1884, 1878-05-16

IuS DoiIeT aG the I0Ot OF fange OF the DOME, :,
To the question, "At q5hat point on q
straight boiler should the dome be situated
TO gsue the best results, all things consid
ered Z" not much difference Of opinion Is
expressed in the answers sent the commit
tee. s'All agree that it should be either dt
rectly over the tube-sheet OF the fire-box OF
| at some point between that and the middle
Of the length OF the boiler. There seems,
however. to be no good reason for locating
the centre OF the dome any further forward
than the tube-sheet in the ordinary eight
wheel locomotives, for the reason that 1t is
desirable to carry as much Of the weight OF
the boiler on the drivers as possible, and
! also that that point is the most ceatral from
the points where steam is generated"
The best material for .tire.boT sheets
The testimony is unanimous in favor OF
steel.
This subject is ably and elaborateIy dis
cussed by the committee.
On the subject of ruptures the committee
stMr. Woodcock, OF the Central Railroad
Company OF New Jersey, mentions one case
OF rupture of q side sheet a1hike The boiler
aras being filled acith aoarn, ,rater "-the first
case Of the kind coming to the notice OF the
| committee. After considering Mr.. Wood
| cocks account OF this novel occurrence the
committee submit the following explana-
tion:
"The sheets Of the fire-boX and the mud
ring having cooled off to about the tempera-
ture OF the surrounding atmosphere, when
water at a considerably higher temperature
than the mud-ring was allowed to fill the
water-space, and as it rose upward along the
sheet, the latter, being thin, soon became Of
the temperature OF the water in contact
with it, and expanded in proportion to its
temperature, while the much larger body Of
metal remained comparatively cold, and,
being cold, would be shorter than on the
line which bad become warm from the
water in contact"
MIR. Wells, chairman OF the committee,
by The use of the blackboard and diagrams,
made this case very interesting one, and
explained it fully and finely. The above is
but an outline OF the explanation.
AS remedy for ruptares 'corrugations
or channels in the sheets at points liable to
such strains are recommended.
The cost OF repairs Of boilers, the COM
mittee report, is very largely influenced by
the character of the water used in them );
and the committee believe that it would
be economy in the end to eXpend compara-
lively large sums OF money in many in
stances in order to procure water that is
free from ingredients forming these iniu-
rious and objectionable deposits"
ORDER OF THE DAY.
The hour Of r. O'Clock having arrived, Mr..
Wells yielded the floor to the order of the
day, "The Treatment OF Locomotive Boil
ers." This was discussed by Messrs. j. Ii.
Setche, james Sedgely, J. NJ. Boon, Will
liam Rushton, w. =. Hudson, and N. Wood
cock.
In relation to cleaning out boilers the
drift Of sentiment seemed to be against
blowing of, and in favor Of allowing the
boilers to cool down and then to wash them
out with warm water from hose.
LOCOMOTIVES, AGAIN.
The discussion was still gong on at P.
NJ, when, according to the order, the re-
port on locomotives was again taken up,
and Mr.. Wells concluded its reading.
On the subject Of the best proportions Of
bo,ler to cylinders of giben area to fur
nish steam with the least consumption OF
fuels the committee have received so little
data that no positive facts can be deduced
therefrom.
The committee submitted an interesting
paper from c. W. Higginson, Of the c., B.
and @. railroad, on the subject OF combus-
tation of coal in the locomotive, giving the
results OF alarge number OF tests.
The entire report, with diagrams, &C.,
would fill page Of this paper ii printed IN
full.
The report was referred to the Advisory
Committee, with the power to print the re-
port and such Of the accompanying papers
(there were several OF them) as they may
think proper.
The report was then discussed by Messrs.
Hayes. Rushton, Forney, Setchel, Hudson,
Woodcock, Boon, Sedgely, Wells, and 9TH
ers.
On the subject OF pitting the opinion was
unanimous that the cause OF it is chemical
action. Some thought iron less affected by
it than steel; others, that steel was far less
affected than iron. A variety OF theories
were advanced as to tests, &c.
The Convention took recess from to
81 O'Clock.
Afternoon Session.
The form of boilers, the advantages and
disadvantages OF locating the dome over
the fre.boX, proportion OF boiler to cylln-
der, and other matters embraced IN Mr.
Weiss report, were discussed by Messrs.
Hayes, Wells, Sedgely, Hudson, Rushton,
Johann, Forney, and others.
LONG RUNS.
The report of the Committee on Long
Runs OF Engines was not ready when
called.
DECEASED MEMBERS.
Mr.. Johann announced the death OF A.
J, Hanglin, of the TeXas-Paciic. 1t was
ordered that a special committee be ap-
pointed 10 prepare suitable resolutions IN
Tespect to his memory. Aessrs. Johann.
King, and Devine were appointed on the
committee by President Chapman:
A eulogy upon the character OF the late
Edward Garfield, OF Massachusetts, written
by Mr.. Gordon 81. Mott, OF Chicago, was
read by the secretary. Ordered to be spread
upon the minutes and printed IN the report.
,t PLACE OF NEXT MEETING.
MIR. Woodcock moved that committee
Of three be appointed to present names to
be voted for as next place OF meeting.
The president appointed Messrs. Wood
cock, Echford, and Boyden. =.
Adjourned until O'Clock this morning.
THE DoUTNEY TEsTIMoNIAL.-The com
plimentary benefit rendered Thomas n.
Doutney, the temperance advocate, at MO
zart Hall last night, was largely attended.
The performance was excellent and the ap-
nlarse deserved. The ovation received by
Mr.. Doutney was fitting tribute to his Ell
forts in behalf Of the temperance cause IN
this city, and he carries with him the best
wishes of large number Of our best people.
Mrs. Doutney and all who accompanied Mr..
Doutney, and who have contributed to the
qualification and elevation OF our people, are
included in this benson. Mr.. Doutney
goes hence to Norfolk, and from thence
northWard.
nIa.. mn. .rru1n E,,rNINC -Hha nrA-