The San Francisco call. [volume] (San Francisco [Calif.]) 1895-1913, 1895-04-01
Charles F. Martin and His Flying
Machine.
=: [Sketched By a "CaH" artist

suspended from the cylinder, and in which
will be placed the propelling machinery
and steering apparatus.
The hydrogen cylinder, which will sus.
tain the weight of the remainder of the
machine will be 200 feet long, Is feet in
diameter and pointed at both ends, with
three valves, one at the top to release hy-
drogen and two at the bottom to pump n.y.
drogen into. the cylinder.
The deck will be fifty feet long and six feet
deep, and will be suspended by an invisi-
BILE framework which will extend upward
inside the cylinder. its full length and hall
its depth. It will have gently. sloping
ends and sides to reduce friction. The
bottom of the deck will be BAN boo, clad
with aluminium. plates; Its sideswill. be
of the same material as the cylinder and
fastened on the under edges OF the deck.
The cylinder will consist of two: parts, an
inner envelope of the. finest grade of pom
gee silk, with two coats of a.secret receipt
composition 'yarnish, and AN: outer en-
velope of canvas covered with a specially
prepared wax: =
At the rear extremity of the cylinder will
be placed the rudder, which will be worked
by two ropes, one on each. side, the. same
as on a ship. It will be Il feet: long and II
DIO&Q, ST.
will be, constructed OF ,alqminum covered
with silk. -.:: -
The propelling power will be screw
feet in diameter, with, six blades and an
outer rim of aluminium. 1t will have a
pitch of IA feet-that is, it Will make one
revolution while the machine moves for=
ward IA feet The shaft on which the
screw viii Fevolye will vi g. be of steel and
hollow. -. -: =
The lifting power Of hydrogen. is 70
pounds to each 1000: feet, but this ma
chimes carrying power. is. figured on: a
basis of 65 pounds to provide for discrep-
ancies in calculation: al things taken
into consideration, the machine Will weigh
$500 pounds and 1T is credited with car
rying capacity of 1900 pounds.
One man can handle the. Martin ma
chine, but as there is about $50 pounds of
carrying capacity to be utilized, ballast
will be used and, when operated in STRAIT
egg, can be thrown overheard to increase
speed in rising out of harms way. .
The. Martin machine is designed; for
speed primarily. and was patterned after
the Whitehead fish torpedo. 1t will make
twenty miles an hour. Unlike flying ma
chimes in use now there will be no ropes or
net work on the outside OF the cylinder;
but every part which comes in contact with
the atmosphere IN It's progress Will present
smooth surface.
Charles JUL, an Alsatian, who stole from
the French War Department the model of
their war balloon, attempted to sell the
model to this Government, but failed, and
hearing of Martins machine, came here
and introduced himself to Mr.. Martin.
Mr. Martin is thankful now that he did
not go into partnership with JUL, as such
action would have jeopardized his chances
of accomplishing his great ambition-the
acceptance by this Government of his
balloon as the model for war balloon.
The French war ballon makes but thirteen
miles an hour.
The motive power will be neither steam
nor electricity, although either could be
used, but viii be something new and will
not be disclosed till the machinery for its
use is made and patented.
Mr.. Martin has concluded arrangements
for the expenditure of $4,000 in building
his machine, and will rent building in
Alameda County probably in which to do
the work.