PRODUCING MOTIVE POWER, WHICH HE ENTITLES THE HYDROSTATIC MOTIVE POWER ENGINE
Year: 1856

page_text: LETTERS PATENT to William Willcocks Sleigh, of London, in the County
of Middlesex, Physician and Surgeon, for the Invention of "PRODUCING
MOTIVE POWER, WHICH HE ENTITLES THE HYDROSTATIC MOTIVE POWER
ENGINE.""
Sealed the 8th July 1856, and dated the 18th February 1856.
PROVISIONAL SPECIFICATION left by the said William Willcocks Sleigh
at the Office of the Commissioners of Patents, with his Petition, on the
18th February 1856.
I, WILLIAM WILLCOCKS SLEIGH, of London, in the County of Middlesex,
Physician and Surgeon, do hereby declare the nature of the said Invention
for PRODUCING MOTIVE POWER, WHICH I ENTITLE "THE HYDROSTATIC MOTIVE
POWER ENGINE," to be as follows:-
The nature of my said Invention consists in producing motive power by the
action of a forcing pump on water contained in certain chambers fixed to an
axletree, counteracting by mechanical apparatus that portion of the force or
pressure which is in the direction opposite to that in which it is intended
motion should take place, said motion and counteraction not being produced
by nor depending upon the exit or escape of any of said water from said
chambers, the general mechanical construction of which is shewn in the plan
marked "A" hereunto annexed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Willcocks Sleigh in the Great Seal Patent Office on
the 18th August 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WILLCOCKS SLEIGH, of London, in the. County of Middlesex, Physician and
Surgeon, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighteenth day of February, in the year of our Lord
One thousand eight hundred and fifty-six, in the nineteenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Willcocks Sleigh, Her special licence that I, the said William
Willcocks Sleigh, my executors, administrators, and assigns, or such others
as I, the said William Willcocks Sleigh, 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
PRODUCING MOTIVE POWER, WHICH I ENTITLE "THE. HYDROSTATIC MOTIVE POWER
ENGINE," upon the condition (amongst others) that I, the said William Will-
cocks Sleigh, 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.
NOW KNOW YE, that I, the said William Willcocks Sleigh, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement, which will be rendered plain by reference to the annexed
Drawings, signed by me; similar letters on each Drawing denoting similar
parts.
Figure 1 a side elevation, Figure 2 a plan or birds-eye view, Figure 3 an
end elevation, Figure 4 a vertical section (full size) of the shaft, chambers,
and pistons, and a side view of a lever, rod, and tooth wheels; Figure 5, part
of the disk and part of the tooth wheel.
A, the framework for supporting the disk and the shaft; B, the shaft or
axle-tree; C, the disk, fixed to the frame, and cast with two rows of teeth
(a, a,) on its face; D, the chambers fixed to the-shaft, Fig. 2 and Fig. 4; E, the

page_text: piston of the chambers, Fig. 4; F, a layer of elastic waterproof cloth, kept in
its position by the ring G, which is fixed by screws to the chamber, Fig. 4;
H, a longitudinal passage in the shaft, marked by dotted lines in Fig. 2, com-
municating with the chambers and with the forcing pump K; L, arms or
guide rods fixed to the shaft; M, a rod fixed to the piston of each chamber
and jointed to the lever N; O, conical wheels, furnished with teeth, and fixed
on an axletree P; Q, arm of the saddle S, jointed to the rod V, and acted on
by the levers N; R, a pin freely passing through and suceptible of motion in
the arm L, Fig. 3; S, a saddle, in which the axletree P freely rotates, and into
which the pin R is screwed; T, a stuffing box fixed to the frame in which the
shaft B rotates, and through which the pump K communicates with the
passage H; U, a discharge tap or cock; V, a rod connecting the lever N with
the arm of the saddle; X, that end of the shaft, to which any machinery to be
worked by this engine may be attached by any well-known means.
The aforesaid engine may be made of such metals and of such strength and
of such a size as the engineer considers adequate to the work it is to perform.
I put the engine into action in the following way:-Having closed the tap U,
I fill the chambers with water, or any suitable fluid or liquid, either by the
pump or directly in the chambers before I fix the ring of the chambers. I
then, with my hand applied to the handle of the pump, apply such force as I
consider the engine strong enough to sustain, and continue so to do by repeated
strokes of the pump till the piston E becomes resisted and supported by the
disk. Then the action commences; the chambers, the shaft, the arms, and
the wheels rotating. When I desire to stop motion, I open the tap U, which
by letting water or whatever fluid is in the chambers escape, all pressure is
removed and the engine stops. From all which it must be evident that when
the chambers are filled with water, or any suitable fluid or liquid, and force
applied to the handle of the pump, the force will act on the internal surface of
the chambers in every possible direction; the force against the piston of the
chambers will be counteracted, said piston being kept in its position, and its
separation from the chambers being prevented by the resistance which the
disk gives to the apparatus connected to said piston, while the force or pres-
sure operating on that portion of the chambers which is opposite to said piston
will act as if no opposite force had existed, and a rotatory motion of said
chambers in the direction opposite to said piston is the inevitable consequence.
Now I claim as my Invention the principle by which this said hydrostatic
motive power engine produces motive power, and which principle consists in
counteracting by means of wheels acting on and being supported by a disk, as
herein-before described, that portion of any force or pressure (produced by any

page_text: suitable matter,, solid, fluid, or liquid,) which is in the direction opposite to that
in which it is intended motion should take place, said, motion not depending
upon nor being produced by the exit or escape of any fluid or liquid...
In witness whereof, I, the said William Willcocks Sleigh, have hereunto
set my hand and seal, this 18th day of August, in the year of our
Lord 1856.
W. W. SLEIGH. (L.S.)