IMPROVEMENTS IN PUMPS
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JONATHAN
GUY DASHWOOD, of Ryde, Isle of Wight, Plumber, 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 Twenty-second day of February, in the fourth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Jonathan Guy Dashwood, Her especial licence, full power, sole privilege and
authority, that I, the said Jonathan Guy Dashwood, my exors, adñiors, and
assigns, or such others as I; the said Jonathan Guy Dashwood, my "exors,
adiñiors, 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, my Invention of "IMPROVEMENTS IN
PUMPS;" in which said Letters Patent is contained a proviso that I, the said
Jonathan Guy Dashwood, shall cause a particular description of the nature of
my 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
Jonathan Guy Dashwood, do hereby declare that the nature of my said
Invention, and the manner in which the same is to be performed, are particu-

page_text: larly described and ascertained in and by the following statement thereof,
reference being to the Drawing hereunto annexed, and to the figures and
letters marked thereon (that is to say):-
The usual method of raising and forcing water and other fluids from a lower
level to a higher, to discharge an uniform and constant stream, is either by the
aid of an air vessel, the discharging the contents of three barrels alternately
into one main pipe by rods attached to a triple crank in the usual way, or by
working three buckets in one barrel with rods or tubes passing through
stuffing boxes, and fixed to a triple crank on the top of the barrel, all of which
methods are objectionable from the great liability to choke by the bucket rods
being fixed inside the barrel, and also from the great quantity of friction
occasioned by the number of such rods and stuffing boxes. The method
I propose is to work, within one long or three short barrels, two cylinders or
long buckets, with valves fixed on the same in the usual way, each bucket
about twice and one quarter the length of the required stroke, and each to be
attached to slings or rods passing up and down on the outside of the working
barrels, and to be attached to the outside of the buckets between the ends of
the barrels, as shewn on the Drawings, or through openings in the long barrel
(if one only is used) made for that purpose, the ends of the buckets to fit
water tight within the barrel or barrels by the aid of stuffing or cupped
leathers, as shewn in the Drawing, by i, i, i, i, i, i, i, i, in Figures 1 and 3,
or be turned accurately so as to fit the inside of the barrels, and each bucket
to be fixed to the slings in such a way that during the stroke no opening will
be made for the escape of water between the ends of the buckets and barrels,
the slings to be enclosed from the bottom upwards as high as the top of the
working barrel within a casing, and such casing to be filled with water to
keep the leather saturated, and to prevent the air from penetrating between
the working barrel and buckets, the slings of each bucket to be attached
to a separate crank shaft, with an eccentric oval cog wheel fixed to cach
crank shaft, and to be driven by a third eccentric oval cog wheel fixed on a
shaft, and placed between the other two in such a manner that the cogs on the
long leverage of the centre or driving wheel shall fit into the short lever cogs
of the adjoining wheel, and the short lever cogs of the aforesaid driving wheel
to fit into the long lever cogs of the other adjoining wheel, so that by turning
the centre or driving wheel regularly round one and the other bucket will be
continually ascending, and causing a constant flow through the suction and
discharging pipes. A communication to be formed between the water in the
barrel over the top of the top bucket and that in the barrel under the bottom
of the bottom bucket by means of a small pipe fixed in the same, and leading