New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1881-11-05
EXPERIMENTS IN MECHANICS.
PAPERS READ BEFORE THE AMERICAN SOCIETY OF

PAPERS READ BEFORE THE AMERICAN SoCiEI1 VI
MECHANICAL ENGINEERS.
The American Society of Mechanical Engineers
met yesterday at the Turf Club Theatre. John b;
Root, of this city, read paper on An lmproveu
Method of Screw Propulsion" He said that IN the
summer of 1870 lie determined TO build a small
pleasure boat for the purpose Of demonstrating the
value Of the double hull principle OF construction
The shaft Of the boat went down through the deck
driving horizontal propeller SHAFT below the water
This proved unsatisfactory owing 10 the noise pro-
duced by the gears and Mr. Root decided dispense
with them by lnclining the shaft downward ana
backward, working the screw directly from l,a Inc
engine. He found that this was a positive gam
After two years experiments, he came TO the con-
clusion that this meth of applying screw proper
lers 10 vessels had the following advantages: ,
l. Obtaining the same or greater effect upon the
vessel by the of very much less angie OF DIaGe
or pitch by which great part OF the loss from sue
action or slipping is ODvlated ana tDe propeIhhs
power economical. =, .,
2 The resistance Of the vessel is diminished by
lifting action of the leSsenlng the dlspaCe
ment. The angle at which Mr.. Root found that the
worked best at 6Go from the line OF move
ment of the vessel.
This paper discussed with great anlnlatloh ny
Professor S. w. Robinson, of the Ohio state Uni
versity at Columbus, read a paper, III which ne
gave a number of observations made III the course
of State inspection of the railroads in Ono.
At the afternoon session President thurs
ton stated that the council OF In, tIe
society had met in the intermisslOn and had
decided t. recommend that Mr. Roots paper,
which the society had voted to have printed AT me
morning session, should be referred BACK TO the
anthOr with the request that he make the necessary
experiments TO prove his theories and submit the
results to the society when completed. Professor
Thurston said that Mr.. Root was not yet member
of the society although his name had been pro oSed
and he undoubtedly would be, and consequently
1t was the duty of the society and not OF the
council to determine what should he done WIN
his paper A member moved that the recommended
ton of the society be adopted;
MI. Root somewhat cxcitedly)-Protessor Thurs
ton spoke of my becoming a member OF TINS society.
| shall certainly never become member II TINS Is
the way it treats the gentlemen II invites as guests
TO its meetings. | asked to come
here TO read this paper by one. of ITS
officers: | did not force myself in here
This This morning the society voted to have my paper
printed. The council met and reported III favor OF
referring il back to Inc to make more experiments
| wrote this simply To- call the attention OF engl-
neeTs TO the principles | had discovered. Does tle
council want mo TO hire a steamship ana run III
across the oceani ] have already spent $4,000 IN
my experiments What influence was there ~ work
in the councilP Is their anyone in II no Is AFRAID
of the effect of the principles have diScoveredf
The society after this voted 10 print Mt R0ots
paper, and somewhat Modified, he took seat near
the steam heater where he toasted ms IoeS io I
w. b. LIE Van, on The Life Time or Age OF Boilers
by w. L. Partridge on STANDARD Neights ana
Measures" and by H. }. +. Porter on " a Sell rack
ing Valve" In the evening the society had dinner
at DelmOnicos.
A MONUMENT AT GEORGE RIPLEY'S GRAVE.
handsome monument of polished Quincy granite
about six feet in height, made by Henry G; Weeks,
was placed in WOodlawn Cemetery yesterday, over
the grave of George Ripley, the late literary editor
OF The TRIBUNE. II was erected by MIS- Ripley
The inscription is as follows:
George Ripley, LII. p.
Born in Greenfield, Massachusetts,,
October 9, 1902;
Died IN New York,
July 4, 1850.
On the base in large raised letters is the name
RIPLEY" |