IMPROVEMENTS IN PUMPS
Year: 1840

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 Thirtieth day of January, in the third year of Her 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, admors, and assigns, or such others as I,
the said Moses Poole, my exors, admors, 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 PUMPS," communicated to me by a 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
annear

page_text: NOW KNOW YE, that in compliance with the said proviso, 1, the said
Moses Poole, do hereby declare the nature of the Invention, and the manner
in which the same is to be performed, are fully described and 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)-
DESCRIPTION OF THE DRAWING.
The Drawing represents a section of a pump, having the improvements
applied thereto; the first improvement relating to an improved construction of
a bucket for lift pumps, and the second improvement relating to an improved
construction of valves for lift and force pumps. a, a, is the barrel of a lift
pump, and 6 is the bucket, which consists of a conical vessel or frame per-
forated with holes, and the object of such vessel b is to support an internal
leather c which is affixed therein, as is shewn, and is of the same figure as
the vessel b. The piston rod is affixed to the lower part of the vessel b, and
it will readily be seen that the leather ċ in the down stroke of the bucket will
collapse, and the water will pass through the perforated surface of the frame
or vessel b, and in the up stroke of the bucket the leather c will open out and
cover the vessel or frame b and the openings therein, and at the same time
the edges of the leather will be pressed against the side of the pump barrel
and thus offer a means of carrying up the fluid which has passed through the
openings in the vessel or frame b; and it will be seen that the vessel or
frame 6 simply operates as a support to the leather c, and at the same time,
owing to the number of openings which may be made in the vessel or frame,
the fluid may have an extent of passage way through the vessel 6 equal to the
bore of the pump, which is known to be very desirable. It should be stated
that although it is preferred that the vessel or frame 6 should be of a conical
form, that shape is not essential, as a half sphere would do, but does not offer
so extended a surface, and consequently the openings through for the passage
of the fluid could not be so extensive as in a deeper sunk vessel or frame, and
yet retain sufficient frame or surface unperforated to support the cupped
leather c.
Having thus explained the nature of the bucket for a lift pump, it only
remains to be stated that the improved valve is similar in construction to the
bucket, and only differs in as much as the vessel or frame b, when used for
a valve, being made fast to the pump barrel, or in the water-way leading
thereto, in place of being affixed to a piston rod, which is necessary when the
apparatus is employed for a bucket. I have not thought it necessary to shew

page_text: any construction of force pump with the improved valve applied thereto, as a
workman will readily understand that these valves will be substituted for those
now in use. The Drawing shows the valve to be similar to the piston, and is
therefore marked with the same letters of reference, and I would have it
understood that what I claim is, first, the mode of constructing buckets of lift
pumps as described; and, secondly, I claim the mode of constructing valves
for force and lift pumps as described.
In witness whereof, I, the said Moses Poole, have hereunto set my
hand and seal, this Thirtieth day of July, in the year of our Lord
One thousand eight hundred and forty.