The Liverpool Standard and General Commercial Advertiser.
Liverpool, Merseyside, England, 1851-05-13 00:00:00

THE POLYTECHNIC SOCIETY.

The usual monthly meeting of this society took
last night,
.in the Hall of the Royal InstitutioUti,it,
Milner, Esq., the president of the society, in the frou;
Mr. SALT, the secretary, read a communicatiou,cboo
Mr. llornby with respect to the establishment of
of design in Liverpool.
The Chairman thought that a school of that desc
would be very desirable. the
Mr. BOULT stated that ho had heard a runiee;:e the es.
that the Town Council had declined to 'wog'''.
taTOOll
tablishment of a public library.
maTdlele
in
nSEtre ECToAuunircilexypelsatienreddayt,hew
hreicshultw
joltf
btheegasl:uereci
from our report of the proceedings.
anythingOn
tap hna compass, by Messrs. 04
and Keene. He said that friction, however produce"' dot
l
the great enemy to a due performance of the con31);10,
iatn\hnhvcaeeaadf
anti-vibration
eieet.eiehvmaenie:bbfcci
roei
acceleration
urlbntseni
srotdiabendtde inmi
orsnneamagvt
rioeaioefnrnnaaeylsl lopleofed aetid,casese uponiiunnm useless
tenteet( to
insmobginir,
ssi bring
pe
d
sses
w thi9
The first improvement was a floating bowl; but °i o,l°
principle, as there was a necessity for guides, to lgee'fitv
inner bowl in its position, there was a slight contact'fect'
it therefore required something else to render it Peftii
The agate was therefore inserted in a disc of el bSt
ti
mineral, (vulcanised India rubber,) which, being iojoil!
conductor of vibration, produced a more perfect iris!' #0 tll''
and the two acting in conjunction, approximated
r;
desired object.
Mr. Walker also introduced a model of a screw ste
boil;:c
tug-boat, for towing on canals, or for swift passegico',#
The principle of this boat is, that she has a seTi „
to
tunnel, nearly one-third of her width, running frog ,
to stern. A spindle, from about midships, is catrio frP-
thres
the tunnel or gutter, and supported by a light ir6,
ing, which also supports the heel of the rudder. „tiste
~
different portions of the spindle sections of toefrij,
screw are fixed, and their revolution is attained "J booLt
of spur wheels, connected with steam power o,llog, ""j
The working has been tried by a boat of 20 feet,'% sPee,?,
only at present by hand power. Two hands mu" eh-t, Pad
of about five miles an hour. The floatage is iltbecd"-if
from the construction, the boat has been found cti°'ol/
difficult to upset. The advantage of the construijollo
expected to be, that such a boat will obviate lc' ers
always been objected to in the application of steuVe bob
canals, viz., the action of the water displaced by tP
upon the side banks. tofej
pock Mr. Walker also exhibited a neat little Poc— Pr D'
registered by Mr. Rigby of this town, the heat 1 jaucea
by which is sufficient to boil a kettle, or cook %telex
The principle is extremely simple, and the heat is oe
by the gas produced from spirits of wine, through es t,"00
gand burner, as well as by a lamp, which igli„eriPlio
liquid and contributes also considerably to the ge„-erie"
of the heat. The article can be conveniently
the coat pocket. 04'
Mr. SMITH stated, with reference to the stove of %frill' Oiclojats
that many years ago the same invention was us- o' tP
rse ofe
wall for the melting of silver, and that in the coo hat tee-
minute a heat could be obtained sufficient to reduce t 0 de ole
to a liquid state. The only difference which he _c(2,11 o'ld
between the two processes was that on the Coril',,‘4
jet of flame was emitted from the side of the 1)10%f ge,e-tv
of, as in Mr. Rigby's, from the upright jet. Sev,e's 05
men expressed themselves in very favourable tel 03
utility of the invention.
The other articles exhibited excited much atteilti°l3'
elicited several intelligent observations.

LIVERPOOL :
TUESDAY, MAY 13, Issl‘oV
PRINTED AND PUBLISHED EVERY TUESDAY et,t-
By JOSHUA FLETCHER LACE, of 53, GrOvesitrriet,
LEONARD ADDISON, of 14, Great Orford-I'ly, of
No. 4, Sr. Gronos's CRESCENT, LIYRIA"-/ .4
BIRKENHEAD: TODHUNTER, Chester-street ;..6`ei I 013
PINKNEY, Argyle-street; OSBORNEg Cheater-ot'
GRIFFITH, Hamilton-street.
ANNUAL SUBSCRIPTION.
IN ADVANCE., .. 203. I ObT CREDIT.. ••