IMPROVEMENTS IN LIFT PUMPS
Year: 1856

page_text: PROVISIONAL SPECIFICATION left by the said John Brooke at the Office
of the Commissioners of Patents, with his Petition, on the 8th April
1856.
I, JOHN BROOKE, of 10, Crescent, Jewin Street, City, do hereby declare the
nature of the Invention for IMPROVEMENTS IN LIFT PUMPS, to be as follows:-
This Invention has for its object improvements in lift pumps, for which
purpose the bucket is composed of two metal cones, one fitting into the other,
in such mariner as to hold the cup leather or flexible material between them,
there being a central passage or opening through each of the cones, which is
covered by a valve, similar to what has heretofore been used when buckets of
wood have been employed. The two metal cones are fixed together by means
of a fork or prongs at the lower end of the pump rod, which pass through the
two cones and draw them together by screws and nuts at the lower ends of the
prongs, by which means the passage through the bucket is undivided. The
lower part of the pump barrel is made with an internal shoulder to act as a
seat for the lower or sucker valve, the stem of which is made with three wings.
Above the seat the diameter of the pump barrel is enlarged, in order to get a
free flow of water around the valve, which is provided with a ring of vulcanised
india-rubber or other suitable flexible substances where it rests on the shoulder
or seat.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Brooke in the Great Seal Patent Office on the 8th
October 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BROOKE, of 10, Crescent, Jewin Street, City, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighth day of April, in the year of our Lord One
thousand eight hundred and fifty-six, in the nineteenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
John Brooke, Her special licence that I, the said John Brooke, my executors,
administrators, and assigns, or such others as I, the said John Brooke, 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 "IMPROVEMENTS IN LIFT PUMPS," upon the con-
dition (amongst others) that I, the said John Brooke, my executors 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 Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Brooke, do hereby declare the
nature of the 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 thereof, that is to say:-
This Invention has for its object improvements in lift pumps, for which
purpose the bucket is composed of two metal cones, one fitting into the other
in such manner as to hold the cup leather or flexible material between them,
there being a central passage or opening through each of the cones, which is
covered by a valve, similar to what has heretofore been used when buckets of
wood have been employed. The two metal cones are fixed together by means
of a fork or prongs at the lower end of the pump rod, which pass through the
two cones and draw them together by screws and nuts at the lower ends of the
prongs, by which means the passage through the bucket is undivided. The
lower part of the pump barrel is made with an internal shoulder to act as a
seat for the lower or sucker valve, the stem of which is made with three wings.
Above the seat the diameter of the pump barrel is enlarged, in order to get a

page_text: free flow of water around the valve, which is provided with a ring of vulcanized
india-rubber or other suitable flexible substance where it rests on the shoulder
or seat.
Having thus stated the nature of my said Invention, I will proceed more
fully to describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a section of a pump bucket constructed according to my
Invention; Figure 2 shows a plan thereof. a is the internal hollow cone which
has the valve fixed to it; b is the lower hollow cone, into which the cone a is
forced and fixed in such manner as to hold the leather c between them; dis
the pump rod, which is forked, or has two branches d¹ formed on its lower end,
by which and the screw nuts e, or it might be keys or cotters, the two cones a
and b, together with the leather between them, are fixed and retained in each
other.
Figure 3 shows a pump barrel having an enlargement at f and a shoulder
or seating 9 for a valve h, the stem of which is formed with three wings, as
shown.
In witness whereof, I, the said John Brooke, havo hereunto set my hand
and seal, this Seventh day of October, in the year of our Lord One
thousand eight hundred and fifty-six.
Witness,
GEO. PITT,
4, Old Square.
JOHN BROOKE. (L.S.)