The sun. [volume] (New York [N.Y.]) 1833-1916, 1891-11-29
VOTES ON SCIENCE AND LxDUs1EY.

pVevb WulCu 0ultio IL W tuoAc thuu pdsSlux
notice As described. the shell is 50 thin that
! tho brick weighs less than one mads
OF clay. and wall may be built Of IL
without tho use Of mortar. nor is any skilled
labor required in laying thcm. the upper and
lower sides Of the bricks being provided with
grooves and projecting ribs which ht into each
arns e"s arsas snd rspssS Sere sa
tTSc long circular ha,.,. openings ip the upper
which Is placed above it. and as one Of thess
projections is h2os shared slid :. hold Is
cred With paint Witch Closes the cracks RI SSs
renders the construction air tight. as well IS
oT s1a ~ s Fl
b mnde highly ornamental: The durabiiity
| Of suoh . wa 10 NOT . matter Of doubt. and
ordfnass attaisaSlea - nearly "'eDf00'' '' Is
An improvement In turbine wheels consists
in tho application Of rubber cushion to its
| buckets. in such form as prevents the disper.
sion Of the jet into spray. which oc-
ours to . greater or less extent upon
striking . metallic surface. The mo.
| tors are contained in q spherical case
| with 6attened sides. and the inlet pipe is
forked to deliver near the centre on both sides
OF the motor. This delivery is into two cham
bera. or reservoirs. on either side Of the central
arms carrying the bucket rings and imparting
motion to tho shaft Each reservoir is pro-
ytded With four Jet heads. and each head with
eteE. lned with bronze. making twenty -four
fdellveTy jets in each motor; these streams. DE-
upon the epcEefs contaiied IN oest cold rolisd
G3Rper bucket ring. and each ring contains
N sS bs s the
EsIsss az n Z:
rneSel M 81 ap 80
Is the discharge lip Is e S Tree az Tue 0'cAs'
Tho adverse opinions expressed by some
metallurgists as to the improving effect OF
aluminium on tho quality OF STEEL does not
appear to be shared by Sir Frederick Abel.
certainly good authority In this limo OF inves.
tigatiou. Tho influence Of aluminium. when
used in small proportion upon the properties
OF gray and white cast iron. Is fully admitted
by him. and especially It's effect In promoting
the production OF sound castings. and In modi-
Tying the character Of white iron in a similar
1 SILICON causing ths
pun With tho ane q Iron q and steel.
fsst IS;sa + re aEss
oe ete4 Sdsn SSY
purely scientific interest and Importance. or
t hnye acquired practical value n regard to
Influence Of the metals man ganese. chrooinium.
s ana su9esten upon the physical properties OF
One Of tho latest and most practicable appli-
ances In the way Of hosting engines has been
turned out by Milwaukee machine company.
The drum In this case is thirty feet in diameter
by eleven feet face. with steam cylinders OF
forty-two inches diameter BY eighty-four
inches stroke. both cylinders having Corliss
valves with Reynolds's automatic cutoff: this
gear is also so attached that the cut-oRs
arc imperative whom tho engines are
starting sta ,I load or moving slow. but they
BY the operator: and ~ their uss perform
sssps :; s stsa asssSs
sh fsf 5s Gnsrsa BY S as
fern bana Ssstsd 81 eash ; rpa
g 5sgai5sf sps ths Sfafs slssSs Sp Snhs
s z sna ns the
Sate ~ d lire ana the
Steam pipes havo been made In England
from the rumis tibre. In carrying this ont tho
material is subjected to tremendous hydraulic
pressure. and. having the properly OF being un-
ssfted ~ Ih9istgre VII neither shrin nor
strength q steel pipes. '"'0 '"''0 'n0 ''nS''
The now process OF making tin fruit cans by
machinery Is said to provo decided success.
both mechanically and financially. Tho ma
chino Is so contrlved as to cut piece OF tin
into four parts and then pass them to feeder.
where they are seized by a., revolving wheel.
The magazine tests II by dipping Il in hot water
a A.. 81 suh}seting IT. T. pressure. When finished
wholly free from acids.
Another process has recently been brought
forward in tho treatment Of iron. viz. that OF
1t by dipping II Into melted copper.
AYE, q melted cryolite and phosphatic acid;
and IL when immersed. tho metal Is connected
perins Is done more rapidly 0A'''f'' '"0 ''p'
The single industry OF m aking firearms give,
employment to some 10000 workmcn in tho
lAege district alone in belgium. and tho
proof house In that city is the oldest and by
ar tho largest. establishment Of the kind in
Europe. and probably In tho world. Every
lrearm manufactured In Belgium has to 10
proved at the Liegs proof house before it Is
allowed to be sold. with the exception Of Ger.
ain arms thnt arc allowed to be- sent TO rec.
ognized proof house. ut Birmingham. for
Instance, TO be proved: and the proof nlnstcr.
BY tho G6vernment 10 insp"rt ana
,"nttn all firearms nade,,p the k,nsdcm,with
H., r., sx""ntinn O. tho - litnry riils5 made at
be Litge proof house. Every iouhle-farreled
7 4, and shotgun has to be prove,! three times:
,arre,s when soldered together, and, 6naily.
t,ter he breech action has been attached: and
npwunf cDnSlinrnflY
,owerful thap, that used mt other proof houses.
70 ono Is paid for hts work on gun. unless
he arm passes the three proofs satisfactorily.
An Italian engineer has originated System
y which he proposes TO utilize the power OF
rains running down grade: that is he has do
Used q machine for compressing, air ms the
rain goes DOWN. which can be used to actuate
'ss'st the locomotive on UP grsdes.