The herald and news. [volume] (Newberry S.C.) 1903-1937, 1907-10-29
100 MILES AN HOUR.
Huge Speed Promised For British
Warships.~
London Chronicle.

London Chronicle.
The British admiralty has now un-
der consideration new fern Of ma
rine engine and propeller which, the
inventor claims. will reVolutlonlze
not only naval warfare. but the navl-
"at;oA of the Whole world.
Tie invention is tie fruit Of much
ingenuity. labor and expenditure on
the part Of: NJ. F. Mailman Of Red
burn street, Chelsea, who has devoted
to it wears Of study and experiment.
1t first sight the engine resembles a
turbine. but closer inspection reveals
important differences. Steam from
any type of boiler is brought to bear
upon a shaft fitted with - chambers,
divided into two sets Of six each.
Shaft and chambers are ali Of steel,
cast in one piece, and of great
strength. Exactly what the arrange.
ment of these chambers is the inven-
tor deems it imprudent at present to
disclose. but it is such that the ad-
mission Of steam. through the orlfces
at their ends causes the shaft to
revolve at tremendous speed.
So great is the power Of the new
form Of engine, indeed, that the i'll
ventor considers it useless to apply
it to the ordinary screw propeller
lest the terrific pace should result
in the formation of complete or
partial vacuum in which the screw
would "race" without everting its
propulsive force. He has accord
ins]y devised a modification of the
screw propeller which will make a
return in speed for all the power that
can be applied to it.
yTae screw has three blades, each
Of the shape already fmiliar, but IN
stead of being attached to one small
hub, they are fixed at intervals of a
couple Of feet from one another to a
long shaft. The result, Of course, is
that each blade works in its own wat
er, instead Of in that through
which it's fellow mas cut but moment
before. The shaft is fitted with three
Of these dissected screws, each Of
them with larger orbit than the one
Immediately in front Of it, so that
when set slowly in motion it pres
ents to the eye the effect of huge
cork screw worming it's way forward.
The shaft bearing the three screws
is fixed Immediately beneath the keel
of the boat, and runs parallel with it
and with the driving shaft and its II
chambers. This occupies 50 little
space that practically the only ma
chinery in the body Of the boat will
be the furnace and boiler, and the
inventor, therefore, believes that in
the case Of cargo vessels the device
will have the advantage Of adding to
the carrying: capacity as we'll as Of in
creasing the speed. It is, however, in
naval warfare that he expects for
the invention the greatest immediate
utility. Up to now, the new system
has been tried only on models upon
the .Serpentine and the Thames, but
the speeds attained in the largest of
these lead Mr.. Mailman to believe
that on a vessel with the size and
steam power Of a present day torpedo
boat it would yield a velocity OF 100
miles an hour.
That, however, can only be deter
mined by experiments upon larger
scale than has yet been possible, and
he has accordingly applied to the ad-
miralty for the loan of a hull and
boilers to which the new engine and
propeller could be fixed at compara-
lively slight cost, so that their utility
may be determined once for all.
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