Technology News

Men have found the various worlds to be far richer than they originally

Tue, 06 Jan 2009 18:49:07 +0000

thought
Men have found the various worlds to be far richer than they originally
thought. They have opened door after door in their vast treasuries,
have ascended throne after throne of power, and ruled realms of
increasing extent. We have no doubt that unfoldings in the future
will amaze even those whose expectations have been quickened by
the revealings of the past. What if it be found that the Word is
equally inexhaustible?

Removable nozzles have various size openings through them and the different

Tue, 06 Jan 2009 06:49:05 +0000

sizes are designated by numbers from 1 up
Removable nozzles have various size openings through them and the different
sizes are designated by numbers from 1 up. The same number does not always
indicate the same size opening in torches of different makes, nor does it
indicate a nozzle of the same capacity.

Weight, of course, was the great bugbear of every air-ship inventor,

Tue, 06 Jan 2009 06:14:05 +0000

and the chief problem was to provide a motor light enough to furnish
sufficient power for driving a balloon that had sufficient lifting
capacity to support it and the aeronaut in the air
Weight, of course, was the great bugbear of every air-ship inventor,
and the chief problem was to provide a motor light enough to furnish
sufficient power for driving a balloon that had sufficient lifting
capacity to support it and the aeronaut in the air. Steam-engines had
been tried, but found too heavy for the power generated; electric motors
had been tested, and proved entirely out of the question for the same
reason.

Types of Low-Reluctance Circuits

Tue, 06 Jan 2009 00:49:05 +0000

Types of Low-Reluctance Circuits. As the pull of an electromagnet
upon its armature depends on the total number of lines of force
passing from the core to the armature–that is, on the total flux–and
as the total flux depends for a given magnetizing force on the
reluctance of the magnetic circuit, it is obvious that the design of
the electromagnetic circuit is of great importance in influencing the
action of the magnet. Obviously, anything that will reduce the amount
of air or other non-magnetic material that is in the magnetic circuit
will tend to reduce the reluctance, and, therefore, to increase the
total magnetization resulting from a given magnetizing force.

The oxygen of the combustion only forms one-fifth of the total volume of

Mon, 05 Jan 2009 18:49:02 +0000

air; therefore, if we were to supply pure oxygen in place of air, and in
equal volume, the action would be several times as intense
The oxygen of the combustion only forms one-fifth of the total volume of
air; therefore, if we were to supply pure oxygen in place of air, and in
equal volume, the action would be several times as intense. If the oxygen
is mixed with the fuel gas in the proportion that burns to the very best
advantage, the flame is still further strengthened and still more heat is
developed because of the perfect combustion. The greater the amount of fuel
gas that can be burned in a certain space and within a certain time, the
more heat will be developed from that fuel.

CHANGING SPEED HOURS TO SECONDS

Mon, 05 Jan 2009 18:37:10 +0000

CHANGING SPEED HOURS TO SECONDS.–As one-
sixtieth of the speed per minute will represent the
rate of movement per second, it is a comparatively
easy matter to convert the time from speed in
miles per hour to fraction of a mile traveled in
a second, by merely taking one-half of the speed
in miles, and adding it, which will very nearly express
the true number of feet.

The second airship of Lebaudy construction was 7 feet longer

Mon, 05 Jan 2009 18:37:02 +0000

than the first, and had a capacity of 94,000 cubic feet of gas
with a triple air bag of 17,500 cubic feet to compensate for
loss of gas; this latter was kept inflated by a rotary fan
The second airship of Lebaudy construction was 7 feet longer
than the first, and had a capacity of 94,000 cubic feet of gas
with a triple air bag of 17,500 cubic feet to compensate for
loss of gas; this latter was kept inflated by a rotary fan. The
vessel was eventually taken over by the French Government and
may be counted the first dirigible airship considered fit on its
tests for military service.

_A

Mon, 05 Jan 2009 18:14:00 +0000

_A._–No; the friction, so long as there is no violent heating or abrasion,
is simply in the proportion of the pressure keeping the surfaces together,
or nearly so. It is, therefore, an obvious advantage to have the bearing
surfaces of steam engines as large as possible, as there is no increase of
friction by extending the surface, while there is a great increase in the
durability. When the bearings of an engine are made too small, they very
soon wear out.

In 1872 Dupuy de Lome, commissioned by the French government,

Mon, 05 Jan 2009 12:37:10 +0000

built a dirigible which he proposed to drive by man-power–it
was anticipated that the vessel would be of use in the siege of
Paris, but it was not actually tested till after the conclusion
of the war
In 1872 Dupuy de Lome, commissioned by the French government,
built a dirigible which he proposed to drive by man-power–it
was anticipated that the vessel would be of use in the siege of
Paris, but it was not actually tested till after the conclusion
of the war. The length of this vessel was 118 feet, its
greatest diameter 49 feet, the ends being pointed, and the
motive power was by a propeller which was revolved by the
efforts of eight men. The vessel attained to about the same
speed as Giffard”s steam-driven airship; it was capable of
carrying fourteen men, who, apart from these engaged in driving
the propeller, had to manipulate the pumps which controlled the
air bags inside the gas envelope.

With this 200 horse-power Anzani, a petrol consumption of as low

Mon, 05 Jan 2009 06:37:06 +0000

as 0
With this 200 horse-power Anzani, a petrol consumption of as low
as 0.49 lbs. of fuel per brake horse-power per hour has been
obtained, but the consumption of lubricating oil is
compensatingly high, being up to one-fifth of the fuel used. The
cylinders are set desaxe with the crank shaft, and are of
cast-iron, provided with radiating ribs for air-cooling; they are
attached to the crank case by long bolts passing through bosses
at the top of the cylinders, and connected to other bolts at
right angles through the crank case. The tops of the cylinders
are formed flat, and seats for the inlet and exhaust valves are
formed on them. The pistons are cast-iron, fitted with ordinary
cast-iron spring rings. An aluminium crank case is used, being
made in two halves connected together by bolts, which latter also
attach the engine to the frame of the machine. The crankshaft
is of nickel steel, made hollow, and mounted on ball-bearings in
such a manner that practically a combination of ball and plain
bearings is obtained; the central web of the shaft is bent to
bring the centres of the crank pins as close together as
possible, leaving only room for the connecting rods, and the pins
are 180 degrees apart. Nickel steel valves of the cone-seated,
poppet type are fitted, the inlet valves being automatic, and
those for the exhaust cam-operated by means of push-rods. With
an engine having such a number of cylinders a very uniform
rotation of the crankshaft is obtained, and in actual running
there are always five of the cylinders giving impulses to the
crankshaft at the same time.