IMPROVEMENTS IN MACHINES WORKED BY CONCENTRATED POWER
Year: 1861

page_text: LETTERS PATENT to François Chevillard, of Horts, Canton of Varennes,
in the Department of the Haute Marne, in the Empire of France, for
the Invention of "IMPROVEMENTS IN MACHINES WORKED BY CONCENTRATED
POWER."
Scaled the 5th September 1861, and 'dated the 28th March 1861.
PROVISIONAL SPECIFICATION left by the said François Chevillard
at the Office of the Commissioners of Patents, with his Petition, on the
28th March 1861.
I, FRANÇOIS CHEVILLARD, of Horts, Canton of Varennes, in the Department
of the Haute Marne, in the Empire of France, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN MACHINES WORKED BY CONCEN-
TRATED POWER," to be as follows:-
I propose substituting in lieu of pistons and their cylinders one or more
driving wheels placed in proximity to the concentrated power. Supposing steam.
to be the power, it will pass from its reservoir or generator through a tube and
be directed on to a part of the wheel, boxed in or contained between. pieces
forming a conduit, which the steam can only leave at the opposite end [after
acting on the wheel, and giving it a rotary movement as the part of the wheel
beyond the steam escape cedes naturally to that part which is within the box.
or conduit, and receiving the whole force of the steam. A reverse rotation will

page_text: be obtainable with the same wheel by closing the passage above mentioned
and directing the steam upon the opposite part of the wheel, which will also
be boxed in, and the steam, after acting on the' wheel, may escape into the
chimney by the same exit as if it had passed through the conduit first men-
tioned. As regards the mechanical movement a power will be obtained
proportioned to the diameter of the driving wheel fitted on its driving shaft.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said François Chevillard in the Great Seal Patent Office on
the 26th September 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANÇOIS
CHEVILLARD, of Horts, Canton of Varennes, in the Department of the Haute
Marne, in the Empire of France, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of March, in the year of
our Lord One thousand eight hundred and sixty-one, in the twenty-fourth
year of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said François Chevillard, Her special licence that I, the
said François Chevillard, my executors, administrators, and assigns, or such
others as I, the said François Chevillard, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN MACHINES WORKED BY CONCENTRATED POWER,"
upon the condition (amongst others) that I, the said François Chevillard,
my executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after the date
of the said 'Letters Patent.
iný
NOW KNOW YE, that I, the said François Chevillard, do hereby
declare the nature of iny said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the annexed Sheet of Drawing,
that is to say:

page_text: My Invention relates to a new or improved rotary machine worked by
concentrated power in which the piston cylinder is suppressed, and in its stead.
a-motive wheel is keyed near to the concentrated power which acts upon
and imparts to it a rotary motion.
The advantages resulting from this new combination, are, first, the sup-
pression of the whole jointed machinery by which the cylinder is worked;
secondly, a far more considerable power is obtained than by common steam
engines, which power will get greater in 'proportion to the size, multiplicity of
the chambers, and the resisting sufaces of the motive wheel upon which the
steam acts; thirdly, a notable saving of fuel by using steam as concentrated
power; fourthly, a more normal motion and more direct impulse than with the
piston cylinder principally in railway rolling machinery; fifthly, the application
to the tenders of rolling engines of a motive wheel, which on being put into
communication with the recipient of concentrated power, will serve for the
double purpose of traction, and as a break, and consequently there will be no
danger of the machinery being injured by the impact of the steam.
In the annexed Drawings I have represented my Invention, wherein Fig. 1.
shows a vertical section of a rotary engine; Figs 2, 3, 4, 5, 6, & 7, show
different views in elevation, plan, and sections of the driving wheel as applied
to the engine represented at Fig. 1; Fig. 8 shows a vertical section of another
rotary engine; Figs. 9, 10, & 11, show sections of the driving wheel as applied.
to the engine represented at Fig. 8. The same letters of reference stand for
the like parts in all these Figures..
A boiler or receiver of the concentrated force here supposed to be steam; b,
metallic channel in the interior of which is lodged the driving wheel. This
channel has on a certain part of its circumference a metallic piece c, which
comes sensibly near to the external side of the driving wheel; d, metallic driving
wheel in the interior of which are formed arms with recesses e between them.
The steam passes in and out of these recesses or chambers through the holes
f formed in the upper and lateral side thereof. 9, pipes for the escape of
steam into the flue h, the orifices of which pipes may be closed at will by a
vane i; j connecting tubes between the receiver a and the channel 6 ; the latter
containing the driving wheel k, driving wheel of the engine shown at Fig. 8.
This wheel has no chambers or recesses like those at d, but the steam acts
successively on the surfaces of the teeth formed upon it, thence to escape out
through the pipe 9 into the chimney h. All the parts being arranged as
described and shown in the annexed Drawings, the upper vane or valve i being
open, and the steam being let in through the pipe j, it will be readily under-
stood that the steam will fill up the chambers e, and by its tendency to escape

page_text: through the exit tube g will impart a rotary motion to the driving wheel, and
consequently to the pieces jointed upon the shaft thereof. Should a shifting
in the direction be required by placing the connecting tube g in the position
shown in dotted lines a contrary motion will be obtained.
Having thus described the nature of the said improvements in machines
worked by concentrated power, I wish it to be distinctly understood that I
do not confine myself to the precise details herein described, nor likewise to
the exact form or shape of the apparatus or parts of the apparatus herein
specified and shown, as such may be varied and modified without departing
from the principle of action thereof, but what I claim as new and as being
of my Invention is,―
. First, the driving wheel as described, with chambers provided with holes
for the induction and eduction of the steam, by which the said driving wheel
is started.
Secondly, the metallic channel as described, for admitting the said driving
wheel, and also the metallic piece c, and the valves with which the metallic
channel is provided.
Thirdly, the arrangement of the connecting pipe between the recipient
and the channel, whereby the latter can be fitted either underneath or above
the driving wheel, as shown in dotted lines, the direction of the rotary motion
depending exactly upon the position of said connecting pipe.
Fourthly, the general arrangement of my engine whether it is driven by
steam or by any other motive agent inclosed in the reservoir for concentrated
power.
In witness whereof, I, the said François Chevillard, have hereunto set my
hand and seal, this Seventeenth day of September, in the year of our
Lord One thousand eight hundred and sixty-one.
F. CHEVILLARD. (L.S.)