IMPROVEMENTS IN APPARATUS FOR IMPARTING MOTION TO REVOLVING SHAFTS
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by Emile Berlet at the Office of the
Commissioners of Patents, with his Petition, on the 9th December
1871.
I, EMILE BERLET, of Reims, Rue de Venise, No. 8, Merchant, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
APPARATUS FOR IMPARTING MOTION TO REVOLVING SHAFTS," to be as follows:-
:-
My new system of continuous motor is chiefly based upon the
principle of obtaining the equilibrium of one active weight by another
active weight. This equilibrium is realized by the employment of
levers, upon which I cause all the active weight of the machine to
act. In this manner whatever may be the weight fixed upon the
two ends of one of the levers, it can oscillate easily at the moment
when these two weights do not vary one with the other. The second
object to attain is to preserve this equilibrium during the progress of
the machine at the moment when the latter raises its weights. This
condition is fulfilled in my system, by means of an apparatus which I
call "the compensator."

page_text: I proceed to describe my Invention in detail; the principal pieces
⚫ composing it are as follows:-
First. Six wheels which I call motion wheels. These wheels carry
in their interior a certain number of weights fixed upon rods, which
are held in proportion to their displacement by hooks opening in
consequence of the rotation of the wheels upon which they are placed;
these hooks are each provided with a spring, which draws them
continually in the same direction.
2ndly. Three levers which are each formed of two bands of iron
or steel bound to one another by two connecting pieces; they rest
at their centres upon knife shaped pivots, which are supported by
cushions bound themselves upon chains fixed upon the frame of the
machine.
3rdly. Of a fly wheel fixed upon a shaft provided with three
eccentrics, or the shaft can equally actuate three triangular runners of
a non-continuous but intermittent oscillation is desired so as to allow the
compensator time to displace the quantity of mercury or water necessary
to re-establish the equilibrium. The shaft of the fly wheel receives its
movement of rotation from the motion wheels by a transmission either
from direct gearing or by a system of chains. The motion wheels
should make as many turns to the shaft of the fly wheel as there are
weights to displace in their interior. A plate is attached to the end
of this shaft, and in this plate a button is fastened which takes into the
slide of a piece fixed upon the connecting pieces holding the two parts
of the levers together. The rotation of this shaft dragging with it the
plate will cause the button to act in the slide, and the piece attached
thereto will follow a to-and-fro movement, and cause the lever to which
it is fixed to oscillate. The height attained by the ends of the levers
should be the same as the weights have to traverse in order to rise
from the centre of the wheels to the circumference. At each oscillation
imparted to the levers the wheels which they carry at their ends
are bound to place one of their rods upon the platform. The dis-
placement of this rod takes place solely in consequnce of the oscillation
of the levers.
4thly. The most important part in the working of this machine is
compensating annaratus. which is intended to
the compansator
or

page_text: the latter are raising their weights. This compensating apparatus is
mounted on each side of the levers by means of two pulleys; these
pulleys receive tubes permitting them to slide, sometimes to the right,
sometimes to the left. To the ends of these tubes are fixed little
flexible reservoirs communicating with one another through the tubes.
The end opposite to these reservoirs is fixed firmly to the ends of the
lever. The to-and-fro motion of the tubes will force the reservoirs
to open and close, so that when one is closed the other is open, and
so on alternately. It should be remarked that for a given quantity,
the greater the number of reservoirs the quicker the transport will be
effected. This to-and-fro movement communicated to the tubes is made
by means of a triangular runner acting upon a frame fixed firmly upon
the tubes; this runner does not act directly upon the frame; on each
side of it are two little movable plates upon which it acts; these plates
are held in place by springs, the tension of which is in proportion
to the effort which the runner must exert in order to displace the
quantity of mercury or water contained in the interior of the reservoirs.
The movement caused by the triangular runner taking place almost
suddenly, it is evident that the displacement of the quantity of mercury
or water enclosed in the reservoirs cannot immediately follow the
movement of the runner. It is therefore necessary to allow a certain
time in order that so minute an amount of liquid may have the
time to repass into the tubes so as to fill the reservoirs situated at
the other end of these tubes. In this way the mercury or the
water not immediately following the displacement of the triangular
runner, the latter must in order to pursue its course cause the
plates to recoil, and these pressing upon their springs which are rested
upon the frame bring about the complete displacement of the mercury
or water.
There are two systems of compensator; in one as just explained
the tubes act upon the liquid, in the other the tubes are fixed, and
the runner acts directly upon the reservoirs. The motion wheels are
made of two plates bound to one another by a certain number of
connecting pieces. Upon one of the plates are mounted the spring
hooks holding the rods in their different positions by means of a little
rod of iron fixed to their extremities, and taking into the hooks.
At the two ends of the rods are little guide pulleys, which are only
used to avoid a too great friction at the moment when the rods bear

page_text: upon platforms placed on the stand of the machine beneath the motion
wheel. Upon the other plate is fixed a gearing or a collar, if the
transmission is made by a chain. The interval between the two
plates is filled by rods to which the weights are attached. These rods
slide between the grooves of bobbins fixed upon little axes which
are mounted and held between the two plates by means of pivots.
It is unnecessary to go more into the details of my machine, which
may vary according to the exigencies of practice. For instance the
reservoirs of the compensators instead of being formed of flexible pockets
dilating and collapsing alternately may be in the form of cylinders
in which pistons displace the liquid in the conditions desired for
establishing equilibrium.
Although the movement transmitted by my motor possesses absolute
regularity and uniformity, still it may be convenient to apply to it a ball
or other governor to meet the case when the resistance of the work to be
done presents considerable variations and irregularities.