All over the brink of Niagara Falls a million tons of water pour.
And two hundred
and twelve feet below the mighty torrent falls against the blades of huge turbans
creating a horsepower to light two hundred seventy five cities towns
and villages
and run the modes of thousands of factories this ability of liquids to transmit
power comes from one important natural law.
You can put your liquid together or compress it into a smaller space
that it already occupies.
If you take a piece of ordinary pipe then fill it with a liquid
and put a plunger at both ends any blow on one plunger.
Sends the other plunger flying out. Liquids can't be compressed.
So here's what happens inside the power of your blow is transferred to the other
plunger by a hydraulic transfer of power.
This is the simplest kind of hydraulic system. Bending the pipe.
Doesn't affect this transfer of power at all. It goes around corners just the same.
When one plunger is pushed down any the other end comes up any
and the pound of pressure exerted at one end.
Is transmitted to the other.
I suppose we have four Pistons at one end
and only one at the other now on the single person traveled four inches.
Each of the four.
Or at the other end travels one in a large piston of the same area they have the
same as for smaller pest I'm moving this ball piston down four inches carries a
large piston up only warning
but with four times the force applied this is the principle on which commercial
and industrial hydraulic systems are based. Down in Dixie.
Billions of pounds of cotton are bailed up every year by the power of hydraulic
press.
With Uncle Sam long range guns.
Not only are polar and reliability needed
but minute precision is required precision
that aims these mammoth guns within limits of one one thousandth of an inch
hydraulically the hydraulic stage works by the same method
and times it's Q Right other knows with a reliable billet the of an old time actor.
This model is a hydraulic system which shows how the hydraulic press multiplies
power.
This is the pump this tube all the liquid through which the power is transmitted
and these four cylinders at the other end receive the power the movement of the
large piston compresses
or crushes anything put in the press the hydraulic stage operates with the same
reliable element.
The accurate hydro.
Transmission screw in the coast defense guns is more complicated
but in principle it is the same as the lift and the press in any hydraulic system.
Regardless of how many cylinders are attached to a master cylinder each of the
small cylinders receive the same amount of pressure
and moves the same distance as the others this principle is used in the latest
application of hydraulic transfer of power stopping the modern motor car.
The master cylinder is placed under the brake pedal
and the power cylinder is put in the brake of each wheel.
Now
when you press down on the brake pedal each of the four power pistons is forced an
equal distance against the brake Hughes pressing them uniformly against the brake
drum this use are hinged in such a way
that the entire aligning contacts the drum throughout the life of the car no grab
at the top or bottom smooth even taking hold by the entire shoe service.
These are the brakes use of a new car.
Let's paint this pair black and examine the where they take.
Note the even grip on the hues in the first twenty miles.
For effect contact at five thousand miles.
And up to twenty thousand miles uniform wear and still good for many more.
For your ability to linings must be hardly uniform and unaffected by moisture.
All else being equal.
Long live
and effectiveness of the break depend on the amount of material contacting the drum.
Brake drums must be wide
and large in diameter smoothly machined on the inside a car
that takes ninety horsepower to go from a dead start to sixty mph in twenty seconds
can stop in four seconds
but it takes four hundred fifty horsepower in the brakes the final safety
and control of the car.
Depends on the construction of the brake itself it is the brake it sell
that stops the car not the hydraulic control perfected
hydraulic control transmits the power from the foot pedal to the brake itself
and gives you the sure quick stopping safety of the modern automobile.