IMPROVE- MENTS IN PUMP VALVES
Year: 1874

page_text: LETTERS PATENT to Cemer Thomas Colebrook, of Islington, in the
County of Middlesex, Engineer, for the Invention of "IMPROVE-
MENTS IN PUMP VALVES."
Sealed the 2nd June 1874, and dated the 25th March 1874.
PROVISIONAL SPECIFICATION left by the said Cemer Thomas Colebrook
at the Office of the Commissioners of Patents, with his Petition,
on the 25th March 1874.
I, CEMER THOMAS COLEBROOK, of Islington, in the County of
Middlesex, Engineer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN PUMP VALVES," to be as follows:-
This Invention relates to simple and effective improvements in pump
valves, and consists of an improved method of forming and applying the
suction and delivery valves of ordinary double action pumps so that they
will require no bolts, screws, pins, wedges, or any equivalent means to
be used in fixing them to the valve box.
'

page_text: In carrying the Invention into practice I form the said valves by
bending, folding, doubling, joining, stitching, rivetting, or hingeing, or
similarly shaping or connecting together one or more piece or pieces of
leather, rubber, canvas, metal, or any suitable material, in such a manner
as to form a kind of × or ✗ shaped figure (or any modification of
such shaped figures) in cross section, by which means I combine and
form the whole number of valves in and of one completed piece, and I
apply the said valve piece simply by sliding it between properly shaped
parts of the valve box and retain it in position by its cover. Valves so
formed and applied will by this means be prevented from shifting in any`
way without the necessity of any of the usual fixing means, and they
will have no motion except the ordinary lifting and falling, or opening
and closing while at work.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Cemer Thomas Colebrook in the Great Seal Patent
Office on the 17th September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CEMER
THOMAS COLEBROOK, of Islington, in the County of Middlesex, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
ycar
Letters Patent, bearing date the Twenty-fifth day of March, in the of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto me, the said Cemer Thomas Colebrook, Her
special licence that I, the said Cemer Thomas Colebrook, my executors,
administrators, and assigns, or such others as I, the said Cemer Thomas
Colebrook, 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 In-
vention for "IMPROVEMENTS IN PUMP VALVES," upon the condition (amongst
others) that I, the said Cemer Thomas Colebrook, my executors or

page_text: 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 bo
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 Cemer Thomas Colebrook, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement in writing, and on reference being had to the
accompanying Drawings, that is to say:—
This Invention which relates to simple and effective improvements in
pump valves consists of an improved method of forming and applying
the suction and delivery valves of ordinary double action pumps so that
they will require no bolts, screws, pins, wedges, or any equivalent means
to be used in fixing them in or to the valve box.
Such being the nature and object of my said Invention I will now
proceed to describe more in detail the manner in which the same is to
be or may be performed or carried into practical effect, and in order that
the same may be distinctly understood I have annexed hereunto one
Sheet of Drawings illustrative thereof, and have marked the same with
figures of reference corresponding with those in the following explanation
thereof, that is to say:-
In carrying my said Invention into practice I form the said suction
valves 1, 1, and the. said delivery valves 2, 2, by bending, folding,
doubling, joining, stitching, rivetting, or hinging, or otherwise similarly.
shaping or connecting together the parts of one piece, or of more pieces,.
of leather, rubber, canvas, metal, or any other suitable material 3, in
such a manner as to form a kind of ✗
or
>
shaped figure
(or any modification of such peculiarly shaped figures) in cross section
(see Figures 1, 2, and 3), by which means I combine and form the
whole number of the said valves 1, 1, and 2, 2, in and of one completed:
valve piece, and I apply this said valve picce simply by sliding its
between properly shaped inwardly or transverse projecting parts 4, 4, of
the valve box 5, and retain it in position simply by the cover 6 of the:

page_text: said valve box, as will be readily understood on reference being had to
Figure 4. Valves thus formed and applied are prevented from shifting
in any way without the use or necessity of any of the usual fixing
means, and have no motion except the ordinary lifting and falling, or
opening or closing while at work.
One of the very many important advantages derived from the use of
this description of valves as thus formed and applied is that they can be
withdrawn and removed from the valve casing immediately its said cover
is removed.
Figure 1 on the annexed Drawings illustrates a section through the
valve chest and shows the suction valves 1, 1, and delivery valves 2, 2,
as formed of separate pieces 3, 3, united by a row or rows of rivets at 7,
or they may be sewn together or otherwise connected as above specified.
8, 8, represent ordinary weights which aid in the closing of the
valves; 9, 9, are the suction ports and 10, 10, the delivery ports.
Figure 2 illustrates a slightly different arrangement, each picco 3
forming a suction and a delivery valve, and the pieces being united by
one or more rows of rivets or stitching between 7, 7.
Figure 3 illustrates a further modification, showing each valve as
formed of a separate part and being hinged at 11, 11, in pairs to a
connecting bar or bars 12.
From these illustrations it will be at once obvious to all practical men
acquainted with this class of apparatus or machinery that the arrange-
ment of the valves may be much varied without in any way departing
from the principle of my Invention; for instance the suction valves may
be hinged or united together, or each may be made separately, and the
delivery valves also or the suction and the delivery valves may be thus
united together in pairs or otherwise substantially as above specified.
Having now particularly described and ascertained the nature and
object of my said Invention, together with the manner in which tho
same is to be or may be performed or carried into practical effect, I
would remark in conclusion that I claim as my Invention, the above
described improved mode or method of forming and applying the suction
and delivery valves of ordinary double action pumps, substantially as

page_text: hercin specified and as illustrated on the accompanying Sheet of
Drawings or any mere variation or modification thereof or therein.
In witness whereof, I, the said Cemer Thomas Colebrook, have
hereunto set my hand and scal, this Fifth day of September,
in the year of our Lord One thousand eight hundred and seventy-
four.
Witness,
BRISTOW HUNT,
Solicitor and Patent Agent,
5, Serle Street,
Lincoln's Inn.
C. T. COLEBROOK. (L.S.)