AN IMPROVED ROTATORY PUMP
Year: 1857

page_text: LETTERS PATENT to Juan Pattison, of Moorgate Street, in the City of
London, Engineer, for the Invention of "AN IMPROVED ROTATORY PUMP."
Scaled the 23rd December 1857, and dated the 29th June 1857.
PROVISIONAL SPECIFICATION left by the said Juan Pattison at tlie
Office of the Commissioners of Patents, with his Petition, on the
29th June 1857.
I, JUAN PATTISON, of Moorgate Street, in the City of London, Engineer,
do hereby declare the nature of the said Invention for "AN IMPROVED ROTATORY
PUMP," to be as follows:-
My said Invention comprises a cylinder with its corresponding end or side
covers, in which through the centre works an axis, having two eccentrical
arms, at the end of which arms is secured two pairs of friction wheels,
which revolve in an internal forcing barrel made the length of the cylinder,
and has a tongue protruding, which by the eccentrical motion is moved so
as to separate the induction from the eduction passage, and slides in a box
made to receive it. The eccentrics or friction wheel eccentrics are to the
periphery of a throw minus the thickness of the barrel, and the latter is
made to touch the whole of the inside of the cylinder in its motion. Three
series of wheels may be arranged so as to have no rubbing motion on the
internal periphery of the barrel.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Juan Pattison in the Great Seal Patent Office on the
29th December 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JUAN
PATTISON, of Moorgate Street, in the City of London, Engineer, send
greeting.
WHEREAS Her most Excellent. Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of June, in the year of our Lord
Ono thousand eight hundred and fifty-seven, in the twenty first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Juan Pattison, Her special licence that I, the said Juan Pattison, my
executors, administrators, and assigns, or such others as I, the said Juan
Pattison, 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 "AN IMPROVED ROTATORY PUMP,"
upon the condition (amongst others) that I, the said Juan Pattison, my execu-
tors 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 Scal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Juan Pattison, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, that is to say:-
My Invention consists of certain arrangements and construction-of parts
for lifting and forcing water or other fluids, which said arrangement I call, a
rotatory pump, the details of which are shewn in the accompanying Drawings,"
and reference must be therein made to the various parts as named in the
following description and Specification. Similar letters indicate, corresponding
and identical parts in, the different Figures. The sizes, dimensions, and
proportions of cach may be modified and varied to meet particular cases,
but the main principles of construction and. arrangement, must always be
retained.
Figure 1 in the Drawings is an elevation, Figure 2 a plan, and Figure 3

page_text: a section on lino A, B, of the pump. a, a, is a metallic cylindrical barrel,
having the plunger box a¹ and the ports or passages a³, a³, cast or otherwise
attached; also proper flanges a³ on each end for fastening the covers or lids
to. The interior of this-cylinder is turned and properly ground, so as to have
an even and smooth surface. Within this cylinder is fitted 6 (which I call
the revolving plunger), having attached to its outer periphery a diaphram
guide or spindle 6', which with said cylinder serves the double purpose of
dividing the outer cylinder into two compartments, and guiding the plunger
in its movement of rotation within the outer cylinder; the other end of the
spindle or diaphram being of a rounded form turns freely in a socket
which said socket, upon being urged by the cylinder through the guide, moves
or slides backwards and forwards along the plunger box a'. Passing through
the centre of the outer cylinder and through stuffing boxes in the covers is
the axle c of the pump. Upon this axle, which passes also within the inner
cylinder, is mounted and fixed an excentric d, of the form shewn in Figure 3,
and in detail in Figures 5 and 5°. The excentric is composed of the segmental
triangle d, in the apex of which bearings are inserted to receive an axle, upon
which are mounted the friction rollers d', shewn in Figures 5 and 5b. These
friction rollers may be increased or diminished in number. They are made
adjustable by the wedge pin d', having a thread and nut upon it, so that
upon slackening or tightening the pin, the bearings are elevated or depressed.
Figure 5 is a plan of Figure 5. Figures 6 and 6" are details shewing
a modified form of the excentric, where friction rollers aro introduced at the
three points of pressure. In this case the excentric turns wholly on friction
rollers.
Figure 4 shews the form of the cylinder cover (without the stuffing boxes),
and also an inner plate for adjustment, to allow for the wear produced by the
friction of the inner cylinder upon the cover, the plate being moved inwards
and outwards by means of screws. This adjustment may also be effected by
means of a ring placed round tho end faces of the cylinder, and acted upon
by springs or otherwise. In order to prevent the wear upon the interior
surface of the outer cylinder and the exterior face of the inner oue, from the
friction of the latter upon the former when impure liquids pass through, I
propose to line the surface of one or either or both with leather, india-rubber,
gutta percha, or other similar suitable substance. Furthermore, should it be
found that the stream of water is not continuous, I propose to add in any
convenient part of the pump an air chamber of the usual form.
In some cases I form the pump so that the plunger cylinder shall be excen-
tric to the outer cylinder, and the excentric itself shall occupy the same

page_text: position in relation to the plunger which it does now. In this case the interior
working part will be that of two excentrics instead of one, the figure of the
outer cylinder being made so as to have a curved surface such as would bo
produced by the motion of the excentrics just described.
In order to economise the bulk and arrangement of the parts, as well as to
increase the continuity and quantity of the stream of liquid ejected, I pro-
pose in some cases to arrange the pump so as to be composed of two pumps
having the position of the plunger and excentrics of each at right angles to
cach other. This arrangement is shewn in Figure 7, both ports at each end
terminating in one mouth, a diaphram passing between them serving to form
distinct compartments.
Having now described my Invention, and the mode of carrying it into
effect, that which I claim and wish secured by the before in part recited Letters
Patent is, the arrangement and construction of parts, substantially as set forth
and described in the Specification and Drawings.
In witness whereof, I, the said Juan Pattison, have hereunto set my
hand and seal, this 29th day of December, in the year of our Lord
One thousand eight hundred and fifty-seven.
Witness,
JAMES WRIGHT,
Newington Causeway,
London.
JUAN PATTISON. (L.B.)