IMPROVEMENTS IN APPARATUS OR MACHINERY FOR OBTAINING ROTATORY MOTION
Year: 1838

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MOSES
POOLE, of Lincoln's Inn, in the County of Middlesex, Gentleman, 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 Eighth day of November, in the second year of the reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said
Moses Poole, Her especial licence, full power, sole: privilege and authority;
that I, the said Moses Poole, my exors, adññors, and assigns, or such others
as I, the said Moses Poole, my exors, adñors, 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, the
Invention of "IMPROVEMENTS IN APPARATUS OR MACHINERY FOR OBTAINING
ROTATORY MOTION," communicated to me by a certain Foreigner residing
abroad; in which said Letters Patent is contained a proviso that I, the
said Moses Poole, shall cause a particular description of the nature of the
said Invention, and in what manner the same is to be performed, to be
inrolled in Her 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
Moses Poole, do hereby declare the nature of the said Invention, and

page_text: ascertained in and by the following statement thereof, reference being had to
the Drawing hereunto annexed, and to the figures and letters marked thereon,
that is to say :-
The Invention relates to a mode of obtaining rotatory motion from a recta-
linear and reciprocating motion, by which means more uniform rotatory motion
can be obtained than by the use of the crank. And in order to give the fullest
information in my power as to the nature of my said Invention, and enable
a workman more readily to carry out the Invention, I will describe the
Drawing hereunto annexed.
DESCRIPTION OF THE DRAWING.
Figure 1 represents the steam cylinder of a steam engine, combined with
suitable apparatus for obtaining rotatory motion from the right line and
reciprocating motion of the piston rods, some of the parts being in section,
in order to the nature of the apparatus or machinery being more clear and
evident. In this Figure the framing of the steam engine, and also of the other
apparatus, is not shewn, in order to avoid complexity of the Drawing, but the
same will readily be applied by an engineer capable of constructing the other
parts; and all the information which will be necessary to be given to the work-
man in respect to the nature of such framing will be, that it is to be such that
the steam cylinder a, a, is to be secured in a horizontal position, as is shown in
the Drawing. And such is to be the case with respect to the two cylinders b, b,
which, together with the parts hereafter described, are suitably arranged for
obtaining rotatory motion from the piston rods of the steam engine, as will be
readily understood from the description hereafter given. The steam cylinder is
of the ordinary construction and will not require further description; and the
piston that works them has two hollow piston rods affixed thereto, which work
through proper stuffing boxes formed on the end of the steam cylinder a, as
is well understood. On the inside of the cylinders b are fixed or formed spiral
guides or grooves c, c, as is shown in the Drawing; and it is by means of these
spiral guides or grooves, and the apparatus which works therewith, that
rotatory motion is obtained from the reciprocating motion of the piston in the
cylinder a, as hereafter explained. On the ends of the hollow piston rods are
attached the circular plates d, d, as is shewn in the Drawing, and in such manner
that these plates can revolve freely. e, e, are friction wheels, turning on axes
affixed on the circular plates d. These friction wheels e work in grooves c, c
and are guided thereby. f, f, are axes, having paddle wheels affixed thereto
suitable for propelling vessels. These axes are capable of passing into the hollow

page_text: piston rods of the steam engine, and are driven by the circular plates d, d, in
the following manner :-g, g, are plates, having sliding bolts h, h, which are
capable of being slided into and from the grooves in the axes f, f, and the
plates g, g, are affixed in the proper position by the screw nuts and bolts i, i,
in the slots shown in the Drawing; and when it is desired the axes f may be
thrown out of gear with the circular plates d, d, by moving the bolts h out of
the grooves of the axes f. by turning the plates 9 on the plates d, as will
readily be traced in the Drawing. Supposing steam to work the piston in the
steam cylinder, and causing the piston rods to be forced first in one direction
and then in the other, the consequence will be that the friction rollers e will
be forced along the spiral grooves c, and thus cause the circular plates d to
revolve on the ends of the 'piston rods; and supposing that the bolts h are in
the grooves.of the axes f, the same will be caused to revolve by the recipro-
cating motion of the piston rods, all which will readily be understood by a
careful examination of the Drawing. I would remark that it will be evident
that the spiral groove c, c, need not be on the inside of the cylinder b, b, for the
same may be on the external surface, as is shown at Figures 2, 3, 4, and 5;
Figure 2, showing a cylinder having a guiding groove passing around it.
Figure 3 shows the surface of such cylinder as if it was laid flat, so that the
whole guiding groove may be seen at one view; and it will be seen that at the
angle where the grooves meet, the groove is continued outwards, and into that
part is fixed a spiral spring, which is with a view to the friction roller passing
into it in such manner as to ensure it proceeding correctly. j is an axis of a
frame which carries the friction rollers ³, 1, 3, as is shown in the Drawing,
the axis j being affixed to the end of a piston rod of a steam engine or other
instrument performing a right line and reciprocating motion; for it should be
understood that the Invention is not confined to the piston rod of a steam
engine, but may evidently be employed in obtaining rotatory motion from any
apparatus or instrument working to and fro in a similar manner.
Figure 4 shows a cylinder, having a suitable arrangement of guides or
grooves for obtaining half the speed of the axis of those shewn at Figures
2 and 3; and Figure 5 shows the same cylinder laid open in such manner that
the whole of the guides should be seen at one view.
Figure 6 shows an arrangement of the Invention suitable for driving the
wheels of a locomotive carriage. In this Figure the same letters indicate
similar parts, as above described. In this case the axis has two cylinders b
applied thereto, which work upon the axis of the wheels, and the same are
worked by means of a quadrangular frame k, which is caused to move from
side to side by means of the piston rods of two steam cylinders, which are made

page_text: are
fast to the framing of the carriage, and to the middle of these frames
applied suitable friction rollers, which work in the grooves formed in the
cylinders b, as is clearly shown in the Drawing.
Figure 7 shows a side view of the framing of Figure 6.
Having thus described the nature of the said Invention, and the manner in
which the same is to be performed, I would remark that I lay no claim to any
of the parts separately, nor do I confine myself to the precise arrangements
shown, as they may evidently be varied to suit the object to which they are to
be applied. And I would have it understood that what I claim as the Invention
secured by the present Letters Patent is, the mode of obtaining rotatory motion
from a reciprocating and right-line motion, as herein described.
In witness whereof, I, the said Moses Poole, have hereunto set my band
and seal, this Eighth day of May, One thousand eight hundred and