CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS FOR OBTAINING MOTIVE POWER, PART OR PARTS OF WHICH IMPROVEMENTS ARE APPLICABLE TO OTHER USEFUL PURPOSES
Year: 1846

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
THOMPSON, of Liver pool, Engineer, send greeting
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Sixth day of July, in the tenth year of Hei cign, did, for
Herself, Hei heirs and successors, give and grant unto me, the said James
Thompson, Her especial licence, that I, the said James Thompson, my exors,
adiñois, and assigns, or such otheis as I, the said James Thompson, my exois,
aditions, or assigns, should at any time agree with, and no others, from time
to time and at all times during the term of years therein expressed, should
and lawfully might make, use, exercise, and vend, within England, Wales,
and the Town of Berwick-upon-Tweed, and also in all Her said Majesty's
Colonies and Plantations abroad, and in the Channel Islands, my Invention
of "CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS FOR OBTAINING MOTIVE
POWER, PART OR PARTS OF WHICH IMPROVEMENTS ARE APPLICABLE TO OTHER USEFUL
PURPOSES;" in which said Letters Patent is contained a proviso obliging me,
the said James Thompson, by an instrument in writing under my hand and
seal, particularly to describe and ascertain the nature of my said Invention,
and in what manner the same is to be performed, and to cause the same
to be enrolled in Ier said Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said in part
recited Letters Patent, as in and by the same, reference being thereunto had,
will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Jaines Thompson, do hereby declare the nature of my said Invention to

page_text: consist in adding to the shaft of any wheel or dium receiving or communi-
cating power, two levers acted upon by weights or forces at constantly varying
distances from the shaft on which they are placed, in such manner as to obtain
additional motive power from such wheels, diums, or shafts And, further,
my said Invention consists in reducing the friction of the said shafts or axes
of the said wheels or drums by the application of friction rollers, as heiein-
after described. And in further compliance with the said proviso, I, the said
James Thompson, do hereby describe the manner in which my said Invention
is to be performed by the following statement thereof, reference being had
to the Drawings annexed and to the figures and letters marked thereon,
similar letters being used to denote similar parts in both the Diawings.
DESCRIPTION OF THE DRAWINGS
.
In Drawing No 1, Figure 1 represents a perspective view of my improve-
ments applied to the fly wheel of a steam engine or other apparatus for
obtaining motive power. A, A, A, A, is the general fiame-work or bed of my
said additional apparatus; B is a fly wheel, C is a pulley on the shaft of the
fly wheel, and from this pulley is driven the pulley D. by means of the
band E, the ends of the shaft or axis of this pulley D, it will be seen, rest on
two friction wheels F, F, and are kept in position on these fiction wheels
by the guide forks or slots G, G At each end of the shaft of the pulley D
is fixed a slot lever H, H, which moves round with the shaft, I, J, K, are
the three arms of a crank which the action of the slot lever H causes to
revolve, L being a fiction roller working on the slot of the lever H, and there.
being another similar friction roller on the end of the arm K, working in a
slot fixed to receive it at M in the frame A, and at the angle formed by the
meeting of the arms I and J of the crank I, J, K, is a heavy weight W,
which gives the additional power sought to be obtained by my Invention.
The effect of this arrangement of apparatus and of the weight when put in
motion by the action of the wheel B in the direction of the arrow N will be
as follows The weight W is now exerting its utmost downward effect in
pressing on the extremity of its slot lever H at the greatest distance from
the axle of the wheel D, while the downward pressure of the other similar
weight at the opposite end of the same axle is being overcome by its slot
lever H at that point nearest to the axle of the wheel D, and, therefore, the
point most favorable for raising it, and it is from the difference between the
power required to raise the weight X at the end of the slot lever nearest
the axis of the pulley D and that exerted downwards by the weight W at the
end of its slot lever farthest from the said axis, that I gain an addition to the

page_text: power applied to set it in motion in all engines or apparatus to which my
sal improvements are attached
In Diawing No 2, Figure 1 represents another modification of my said
Invention, shewing how the weights W and X may be done away with, and
the power of a resisting medium employed instead to act upon the slot
levers H, H, for this purpose O is a cylinder or vessel containing water;
and P is a hollow air and water tight float or ball, with a piston rod Q passing
up through the cover of the vessel, and having at its upper extremity a
grooved fiction wheel T working between two guide rods, from the axis
of this wheel passes the guide or crank rod R to the crank I, J, K, which it
will be observed under this arrangement requires no weight, the floating
power of the ball or float P acting upwards at the same point and in the same
way that in Figure 1, Drawing No 1, the weight W acts downwards; the
rod and handle S is for reversing the motion of the apparatus.
Now, whereas it is evident that my fiction wheels F, F, are applicable
to the axis of almost all kinds of machinery, and then use is not by any
means limited to machinery or apparatus for obtaining motive power; and
whereas ny slot levers may in some cases, where only one weight is required,
be applied to the wheel or dium, instead of the shaft or axle, as herein-before
descubed, and whereas steam, or gas, or compressed air may be used as a
force in the cylinder O instead of water, by substituting a piston instead of the
float P, and adding suitable apparatus for that mode of applying my Inven-
tion,
and whereas I claim as my Invention the improvements herein-before
described, of slot levers, cranks, and weights, or forces and fiction rollers
added to machinery or apparatus for obtaining motive power, and such my
Invention being, to the best of my knowledge and belief, entirely new, and
never before used within that part of He said Majesty's United Kingdom of
Great Britain and Ireland called England, Her said Dominion of Wales, or
Town of Berwick-upon-Tweed, nor in any of He said Majesty's Colonies
and Plantations abroad, or in any of the said Channel Islands, I do hereby
declare this to be my Specification of the same, and that I do verily believe
this my said Specification doth comply in all respects, fully and without resci ve
or disguise, with the proviso in the said herein-before in part recited Letters
Patent contained, wherefore I hereby claim to maintain exclusive right and
to my said privilege Invention.
In witness whereof, I, the said James Thompson, have hereunto set my
hand and seal, this Fifth day of January, One thousand eight hundred
and forty-seven.
JAMES (LS) THOMPSON.

page_text: AND BE IT REMEMBERED, that on the Fifth day of January, in the
year of our Lord 1847, the aforesaid James Thompson came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Enrolled the Sixth day of January, in the year of our Lord One
thousand eight hundred and forty-seven.