or other Engines or Motors. BY GAS OR OTHER ENGINES OR MOTORS
Year: 1885

page_text: or other Engines or Motors.
HENRY WILLIAM WIMSHURST 16 Thicket Road, Anerley, in the County of
Surrey, Gentleman do hereby declare the nature of my invention for EQUALIZING
THE POWER GIVEN OFF BY GAS OR OTHER ENGINES OR MOTORS to be as follows:-
This invention consists of a contrivance for taking up the power given off by
a gas or other engine or motor in which there is a considerable variation of
pressure, on a spring or other elastic medium, and transmitting the power so taken
up to a second fly wheel, or to the shafting direct-One method of so transmitting
the power may be thus described. On the shaft of an ordinary gas engine is fixed
a fly wheel sufficiently heavy to enable the engine to turn the centres and to do
the necessary amount of compressing of the gases-To the said shaft is also fixed
one end of a spring of volute or other suitable form, the other end of such spring
being fixed to the second fly wheel which moves freely on the engine shaft, the
power being communicated from such second fly wheel to the machinery to be
driven Or when the attachment is allowed to work loose on the shafting one end
of a volute or other construction of spring being attached to such rigger the other
end of the sd. spring being fixed to the shaft.
The spring used may be of metal of wood or any suitable elastic substance or it
may be formed of a receiver which is capable of compressing or expanding air or
other gaseous media.

page_text: An Improved Method of Equalizing the Power Given off by Gas
or other Engines or Motors.
I, HENRY WILLIAM WIMSHURST of 16, Thicket Road, Anerley, Gentleman do
hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
The object of this invention is to equalize the power given off by a Gas or other
Engine where there is a considerable variation of the speed of the Engine.
This is attained by absorbing the power in a spring or other elastic mediumi
before it is transmitted to the fly wheel or pulley which drives the external
machinery.
The application of this invention to a Gas Engine may be described as follows;—
On the crankshaft A of the Gas Engine a fly wheel B is keyed or fixed in any
suitable manner. Another fly wheel C is fitted up to turn loosely on the shaft, and
is connected to the shaft by a volute shaped spring D or springs of sufficient
strength to absorb the power to be transmitted. One of the principal points of
this invention is the method by which the end E of the spring is attached to the
free flywheel of the Engine;-This attachment is designed to enable the force
which the spring applies to the free flywheel to be as uniform as possible; To effect
this object the end of the spring is attached to the end of a semi-circular link F
which turns on a pivot at its other end; As the tension on the spring increases the
end to which the spring is attached approaches nearer to the centre and this
reduces the leverage at which the force is applied to the free flywheel.
The turning effect on the free flywheel will thus be made as nearly as possible
equal. To allow for the possibility of the free flywheel over running the fixed
flywheel the inner end of the link F is not rigidly attached to it but is connected
by a ratchet wheel H and pawl G The ratchet wheel is fixed to the free wheel
and the pawl is pivotted to two discs K which run free on the ratchet wheel.
The inner end of the link F is also connected to these two discs;-As the semi-
circular link turns backward by the overrunning of the free wheel it touches and
thus raises the pawl and disconnects it.
The number of springs and links and pawl attachments may be multiplied to
any extent required to absorb the power.-Instead of the ratchet gear a silent feed
arrangement may be employed.
The fixed flywheel must be of sufficient weight to enable it to perform the
functions of the ordinary flywheel of a Gas Engine for example to compress the
charge of Gas on the return stroke.

page_text: I do not intend to make any general claim to spring pulleys or flywheels,
but;-
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1st In Gas or other Engines with variable speed, a fixed and also a loose flywheel
connected by springs, to equalize the speed and effort substantially as herein before
described with reference to the drawings.
2nd The link and ratchet gear attachment for adjusting the leverage of the link
to the tension of the spring or any other equivalent arrangement as hereinbefore
described with reference to the drawings.