The Rutland daily globe. [volume] (Rutland, Vt.) 1873-1877, 1874-12-12
THE mrI.TiWOHE CAR AXLE
FEST.
Results 80 far rs COmpietcd.-A Brief
summary of the SuperiOrittes OF
the Patent.

the Patent.
On Tuesday last was commenced scien-
tific test of the Miltimorc patent car axle,
in competition with the rigid or ordinary
axle now in use, over the Harlem Extcn-
sion road. between Rutland and Bcnning-
ton. Il special train was made up here at
that time for the purpose of running over
the round trip with both axes and thus
securing a comparison of the force which
each required TO be given by dynam-
eter, which instrument was considered as
reliable guide in asccrtalning the exact
facts desired to be secured. An account
was given IN THE CLONE of Wednesday of
the first days trip, the purposes of the ex-
cursion, the names of the party, etc.
On yesterday friday the conclusion Of
the two round trips was made, the train
leaving Rutland at 8 so in the morning for
its last trip to Arlington, the end of the
route. The party on board was about the
same as that mentioned on the first trip
The ordinary trucks were under the cars
for the comparative test with the Milti-
more. On arrival at Arlington, at about
eleven o'clock, the party alightcd and at
noon dinner was served at the Arlington
House, to which the company were invited
by Mr.. MilLimore. The register of the
dynameter was taken and at about OF clock
the cars with the Rutland party returned
home.
The average amount of draft required
for each style of trucks for the round trip
we are, as yet unable to give, but we are
able to give the result Of a few special tests
taken on the way which demonstrate as
clearly t. the mind Of any unprejudiced
person the superiority Of the Nliltimore
axle over others, in that particular direc-
ton. One of the principal qualities OF
superiority claimed for the Miltmore is in
particular quality to the public, special
tests were made ON the sharpest curves
along the line On two curves, one near
Dorset and the other near Arlington station,
a considerable difference in draft was as
certained. Both of these curves are four
degrees, or 1850 feet radius. The dynamo
ter showed that 40 per cent more draft was
required to pull the cars around the curve
at Dorset having the ordinary trucks, than
it did those to which the Miltimore axle
was attached on the Arlington curve it
required % per cent more TO draw the old
trucks than the N1ltlmore The latter
curve was on very heavy grade, which les
sened the difference in force somewhat
These figures are very encouraging and
favorable for this new patent, although we
understand that even more favorable tests
have been made heretofore. Mr.. ]. j. r.
Randall for the Eastern Railroad Assoca-
ton, is still pursuing his investigations in n
scientific manner, and other tests of diff
ferent character will be made at his in
stance next week, the results of which will
| be duly made public through our columns.
AS an interesting instance of what the
Miltimore axle has been known to accom-
| plish, the superintendent of the Chicago,
|
| that they ran car for four months, $50
miles daily, fitted with the Miltimore pat
ent. in connection with car having the
ordinary trucks attached. AT the end of
that time they report that the books of the
company show the following comparison
in cost Cost of running the ordinary,
$S0.35 cost Of running the MiltimOre,
$10.03. Two pairs of wheels were worn
| out on the rigid axle car although ii
started with new wheels and brasses, while
the MIltimore were in good condition at the
end of the trial.
Mr.. A. ID. Garfield of Arlington, and
now the superintendent of the Arlington
car manufacturing company, was appoint
ed the general agent for New England for
the sale of this patent some two years ago.
They were at that time, in May, 1872, first
introduced into this part of the country
and were, as compared with the patent
now used, then in an imperfect state fol
practical use. 1t is true that they possessed
even then superior qualifications which
recommended them for use but it was APP
parent that other and valuable additions tc
the axle must be made. To this end the
practical good sense and workmanship OF
MIR. Garfield were called into action and
his assistance to Mr.. Miltimore was readily
|
which finally resulted in the present axlt
and wheel which is now claimed to be ~
perfect an article as can be made.
The inside axle, of the Mitimore paten
is made stationery and immovable, anC
solid to the truck frame, through the medi
UNI of nuts which take the place of the ole
oil wells. Around the stationary axle i
placed the revolving axle or sleeve, reach
ing through the hubs of the wheels to TIN
nuts. Upon the journals at each end o
the sleeve are loosely mounted the ca
wheels, the wheels and sleeve all revoly,
together aaound the stationary axle, as on,
piece, except when one is compelled t
travel further than its mate in going arount
curve, when one or both wheels turn OF
the sleeve TO the same extent that one o
both would be compelled to slip on tn
track had the wheels been solid Il
the axle. The weight of the car i
supported by the solid axle, while the re
volving axle supports the wheels in per
pendicular position, and with the nut
} holds them to the guage. AS the sleey
always reyolves around the stationary axl
the wear comes at the journal between
these two axles. To prevent the wearing
out of these axles hollow box is inserte
in each end of the sleeve. At speed o
, ten miles per hour, or more, the oil in tn
chamber or axle revolves with the sleev
and forms uniform strata of oil aroun'
: the inner surface of the sleeve. The feede
, which is stationary in the axle continual
8 discharges stream of cold oil upon TN
axle, and rs long as there is OIL in tn
: chamber constant supply is forced int
the box, and only very small proportio
7 allowed to escape. A great saving in Of
and water is thus affected
A smaller axle than ordinary may b
+ used for the following reasons; First, til
outside fibre of the iron is not cut away q
Q any point. II is a well known fact tina
I the outside fibre is many times stronge
q than the same amount of inside iron
! Second, the only strain upon the axle
I the weight OF the car and load, the twis
0 ing strain caused by the constant sippin
OF the wheels upon the track being avoide
0 by the wheels being loose upon the sleeve
@ consequently the iron of tha oylo 10 mr.