IMPROVEMENTS IN APPARATUS FOR PRODUCING MOTIVE POWER
Year: 1870

page_text: LETTERS PATENT to Thomas Hitchcock, of Stamford, in the County
of Lincoln, for the Invention of "IMPROVEMENTS IN APPARATUS FOR
PRODUCING MOTIVE POWER."
Sealed the 5th May 1871, and dated the 15th November 1870.
PROVISIONAL SPECIFICATION left by the said Thomas Hitchcock
at the Office of the Commissioners of Patents, with his Petition,
on the 15th November 1870.
I, THOMAS HITCHCOCK, of Stamford, in the County of Lincoln, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
APPARATUS FOR PRODUCING MOTIVE POWER," to be as follows:-
My Invention relates to an improved machine for producing or multi-
plying motive power by means of a combination of levers acting on a
fly wheel. This apparatus acts as a medium for transmitting motion,
the power applied to drive the machine being multiplied as above
stated.

page_text: The apparatus consists of a frame in which I pivot a long lever in a
convenient position for being oscillated by hand or other power applied
to the long extremity. The other or shorter end of this lever is connected
by a link to another lever also pivoted to the frame, the connections
and also the relative proportion of the levers being capable of adjust-
ment according to the degree of power required. Motion is thus
transmitted to the second lever, which oscillates simultaneously with the
first, the reciprocating motion being converted into rotary motion by
transmitting the power to a fly wheel mounted on a horizontal cranked
shaft running in bearings on the frame. For this purpose the second
lever is slotted to receive the crank pin of the fly wheel shaft. This
crank pin, which may be provided with a friction roller or slide, is caused
to traverse the slot by the oscillation of the lever and so imparts rotary
motion to the fly wheel. The crank arm is also slotted to receive the
crank pin which may be adjusted in connection with the levers and fixed-
at any radius according to the power required. Two or more similar
combinations of levers may be applied to operate additional cranks
radiating in different directions from the same shaft. The motion may
be transmitted where required from the fly wheel shaft by band or other
gearing.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Hitchcock in the Great Seal Patent
Office on the 13th May 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
HITCHCOCK, of. Stamford, in the County of Lincoln, send greeting.
+
:
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date. the Fifteenth day of November, in the
year of our Lord One thousand eight hundred and seventy, in the
thirty-fourth year of Her reign, did, for Herself, Her heirs. and suc-
cessors, give and grant unto me, the said Thomas Hitchcock, Her
special licence that I, the said Thomas Hitchcock, my executors,
administrators, and assigns, or such others as I, the said Thomas
Hitchcock, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might

page_text: make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "IMPROVEMENTS IN APPARATUS FOR PRODUCING MOTIVE POWER," upon
the condition (amongst others) that I, the said Thomas Hitchcock, 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 Thomas Hitchcock, do hereby
déclare 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, reference being had to the Sheet of Drawings
hereunto annexed, and to the letters and figures marked thereon (that is
to say) :-
My Invention relates to an improved machine for producing or multi-
plying motive power by means of a combination of levers acting on a
fly wheel. This apparatus acts as a medium for transmitting motion,
the power applied to drive the machine being multiplied as above
stated.
The apparatus consists of a frame in which I pivot a long lever in a
convenient position for being oscillated by hand or other power applied to
the long extremity. The other or shorter end of this lever is connected
by a link to another lever also pivoted to the frame, the connections
and also the relative proportions of the lovers being capable of adjustment
according to the degree of power required. Motion is thus transmitted
to. the second lever which oscillates simultaneously with the first, the
reciprocating motion being converted into rotary motion by transmitting
the power to a fly wheel mounted on a horizontal cranked shaft running
in bearings on the frame. For this purpose the second lever is slotted to
receive the crank pin of the fly wheel shaft. This crank pin, which may
be provided with a friction roller or slide, is caused to traverse the slot by
the oscillation of the lever and so imparts rotary motion to the fly wheel..
The crank arm is also slotted to receive the crank pin, which may be
adjusted in connection with the levers and fixed at any radius according
to the power required. Two or more similar combinations of levers may,

page_text: be applied to operate additional cranks radiating in different directions
from the same shaft. The motion may be transmitted where required
from the fly wheel shaft by band or other gearing.
In the accompanying Drawing I have illustrated the combination of
apparatus of my Invention.
C
A is a suitable frame, upon which the levers B and C are mounted..
These levers are pivoted between two plates bolted to frame A, of which
one only, D, is shown in the Drawing. These plates are provided with a
series of corresponding holes E, in any of which the pin or fulcrum of
the lever C may be placed according to circumstances. The pin F
forms the fulcrum for both levers B and C in the Drawing, but the
fulcrum of lever O may be shifted to any other position in the plates D as
before stated. The lever B is pivoted at a point in its length and lever C
at its inferior extremity. These two levers are connected by a link G,
whose extremities are jointed to the said levers by pins H. Each lever
is provided with a series of holes I for the reception of the pins H, so
that the link G may be connected from any hole in the one lever to a
hole in the other, according to the position in which lever C is pivoted in
plate D and the power required. Power may be applied to the extre-
mity B¹ of lever B either by manual labor or from the piston rod or
other operating part of a steam engine to impart a reciprocating
movement to the lever, which is thus caused to oscillate on its fulcrum F.
The lever C is provided with a slot K in the direction of its length which
forms a guide in which slides the pin L of a crank arm M on the shaft N
to be operated, and as the lever C partakes of the to-and-fro movement of
the lever B it converts the same into rotary motion through the medium
of the crank pin L and slide K, which thus effects the rotation of shaft N
and its fly wheel O. The oscillatory motion of the levers is limited in its
extent according to the radius of the crank pin, which may be made
adjustable on the crank arm M and bolted thereto at any position in
the slot with which the arm is provided according to the power or
speed required. The crank pin L should be provided either with a
friction roller, as shown, or with a sliding block to move in guide K
to avoid friction as much as. possible, and I prefer to arrange the
apparatus so that when the crank is at its lowest position the lever C
shall be at an angle of about 20 degrees from a horizontal line, as
shown in the Drawing.

page_text: The apparatus of my Invention is applicable for transmitting motion
and multiplying power in machinery generally.
Having described the nature of my Invention, and the manner
of performing the same, I declare that what I claim as my Invention
to be protected by the herein-before in part recited Letters Patent is,-
1st. The combination of levers B and C, connected by a link G jointed
thereto, the levers O having a longitudinal slot in which moves the
crank pin of the shaft to be actuated, the whole forming the improved
apparatus of my Invention, arranged and operating substantially as
herein-before described and shown in the Drawing for the purpose
specified.
2ndly. I claim combining several such apparatus constructed as
herein-before described and arranged to operate the same shaft, power
being applied to each from the same or different sources, as set forth.
In witness whereof, I, the said Thomas Hitchcock, have hereunto
set my hand and seal, this 11th day of May, in the year of our
Lord One thousand eight hundred and seventy-one.