IMPROVE- MENTS IN CHAIN PUMPS
Year: 1872

page_text: LETTERS PATENT to Charles Henry Murray, of Loman Street, in the
Borough of Southwark, Machinist, for the Invention of "IMPROVE-
MENTS IN CHAIN PUMPS."
Sealed the 9th May 1873, and dated the 13th November 1872.
PROVISIONAL SPECIFICATION left by the said Charles Henry Murray
at the Office of the Commissioners of Patents, with his Petition,
on the 13th November 1872.
I, CHARLES HENRY MURRAY, of Loman Street, in the Borough of
Southwark, Machinist, do hereby declare the nature of the said
Invention of "IMPROVEMENTS IN CHAIN PUMPS," to be as follows:-
My Invention of improvements in chain pumps has for its object to
construct these pumps in a cheaper and more economical way than
heretofore, and in such a manner that access may be obtained to the
interior with great facility. To this end the up cast barrel is constructed
of cast iron in sections of suitable length, and provided with flanges so
that they may be bolted together. The down cast shaft is constructed
of sheet iron bent into the required form and provided with lugs or ears

page_text: which are rivetted thereto, so that the wrought-iron down cast shaft may
be connected to the cast-iron up cast barrel by screw bolts. Any section
of the wrought-iron part may therefore be detached with facility and
access obtained to the interior so as to repair any of the moving parts
that may be damaged in working. On the back of the wrought-iron
part a ladder is constructed of iron rod arranged in steps at suitable
distances for the convenience of the workmen descending and ascending
the well when required. •
The lifts are by preference made of wood, consisting of two or three
thicknesses strengthened by sheet iron interposed between them and
bolted together. These lifts are connected to an endless chain or chains,
and they are made to fit as nearly as possible the cast-iron up cast barrel,
whereas in the down cast wrought-iron barrel they will be loose and have
plenty of play. Chain pumps constructed in this manner are not very
liable to get out of repair, and if the working parts do get damaged they
can easily be mended.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Henry Murray in the Great Seal Patent
Office on the 13th May 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
HENRY MURRAY, of Loman Street, in the Borough of Southwark,
Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of November, in the
year of our Lord One thousand eight hundred and seventy-two, in
the thirty-sixth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Charles Henry Murray, Her
special licence that I, the said Charles Henry Murray, my executors,
administrators, and assigns, or such others as I, the said Charles Henry
Murray, 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 CHAIN PUMPS," upon the condition (amongst others)

page_text: down cast wrought-iron barrel they will be loose and have plenty of play.
Chain pumps constructed in this manner are not very liable to get out
of repair, and if the working parts do get damaged they can easily be
repaired.
In the accompanying Drawing Fig. 1 is a sectional side elevation of
part of a chain pump constructed according to my Invention. The
upper part is shewn in section so that the construction of the parts may
be more clearly seen; Fig. 2 is a horizontal section or plan view of the
same; Fig. 3 is a back elevation, shewing the ladder whereby workmen
can ascend or descend. The upper section of the down cast shaft is
removed, leaving the back of the up cast shaft exposed. Figures 4 and 5
are detached views of some of the parts illustrating a modification of the
way of constructing the down cast shaft.
The up cast shaft or pump proper a, a, is constructed in sections of
cast iron, and any number of these sections may be bolted together one
on the other by their flanges, as shewn at a¹, a¹, in the Drawing. The
pump chamber barrel or water passage is of an oblong rectangular
shape, as seen at Fig. 2, and in this chamber or channel work the lifts
or buckets b, which are jointed or connected to the endless chain c, c,
as in my former Invention. In my new or improved pump however
I form these lifts 6 of three pieces of wood, between which are placed
plates of iron, and the pieces are all bolted together as shewn at Fig. 1.
By this means I can make the lifts fit the pump channel or up cast
barrel or shaft with tolerable accuracy, and they can be easily repaired
when worn at the edges. The down cast shaft d, d, is made of wrought ?
iron or sheet iron, to the inner edges of which are rivetted pieces of
angle iron c¹, whereby the down cast shaft or barrel may be bolted to
ears a² cast on or with the up cast shaft, as shewn in the Figures. The
plate lifts b, b, with the down chain pass down the shaft d loosely, as in
the former instance. To the back of the down cast shaft d are affixed 3
the iron rods or rounds d³, d, of a ladder, up or down which the
workmen can ascend or descend when desired. It will be seen in Fig. 2
that these bars dare rivetted to a projecting part of the sides of the
shaft d.
In Figures 4 and 5 I have shewn a somewhat different way of fixing 3
the bars d', which in this instance are made of flat bar iron, the ends of
which are bent round the edges of the sides of the shaft, and are rivetted

page_text: I would also remark that the down cast shaft may be made of plates
of sheet iron connected together by means of angle iron rivetted thereto.
Having now described my Invention of " Improvements in Chain
Pumps," and having explained the manner of carrying the same into
effect, I claim as the Invention secured to me by Letters Patent as
aforesaid, constructing the barrels or body of chain pumps with a cast-
iron up cast barrel and a wrought-iron down cast barrel, as herein set
forth.
I also claim adapting a ladder to the back of the down cast barrel, as
and for the purposes herein set forth.
And also constructing the buckets or lifts b, b, in the manner shewn
and described.
In witness whereof, I, the said Charles Henry Murray, have
hereunto set my hand and seal, the Thirteenth day of May, in
the year of our Lord One thousand eight hundred and seventy-
three.
CHARLES HENRY MURRAY. (L.S.)