IMPROVEMENTS IN COCKS OR VALVES FOR THE PASSAGE OF FLUIDS
Year: 1861

page_text: LETTERS PATENT to Benjamin Pitt, of 3%, Great Carter Lane, in the
City of London, Engineer, and James John Shedlock, of 1, Wendale
Villas, Earl's Court, Kensington, W., for the Invention of "IMPROVEMENTS
PROVISIONAL SPECIFICATION left by the said Benjamin Pitt and James
John Shedlock at the Office of the Commissioners of Patents, with
their Petition, on the 28th November 1861..
We, BENJAMIN PITT, of 3ª, Great Carter Lane, in the City of London,
Engineer, and JAMES JOHN SHEDLOCK, of 1, Wendale Villas, Earl's Court,
Kensington, W., do hereby declare the nature of the Invention for
"IMPROVEMENTS IN COCKS OR VALVES FOR THE PASSAGE OF FLUIDS," to be as
follows:-
This Invention has for its object improvements in cocks or valves for the
passage of fluids. For this purpose a box or case is employed having inlet
and outlet passages at its ends; the valve works within this box or case, and
it is preferred that the box or case in which the valve works should be of a
square or rectangular section, and that the inlet and outlet passages at the two
ends thereof should be of a circular section, but of less diameter than the ends
of the box or case. Through one side of the box or case a spindle or axis
passes into the interior of the box or case, a stuffing box being employed to
prevent the escape of the fluid around the axis; the inner end of the spindle
or axis turns in a suitable bearing, and has fixed upon it an excentric, or it
may be simply a projection. The valve is fixed to the end of a frame, which
is supported by and slides on two ledges or guides on the interior of the box
or case. The spindle or axis (above mentioned) passes through the frame, so

page_text: that the cam or projection upon it will, when the axis is turned in one direction,
press the valve against its seat, and when the axis is turned in the opposite
direction will move the valve away from its seat. By thus arranging a circular
valve in a rectangular_box-or-case-the-fluid-will-be-able, when the valve is
open, to pass between the periphery of the valve and the interior of the box
or case.
In some cases in forming the seat for the valve a suitable recess is made
where the seat is to be produced, and metal which we prefer should be type
or other comparatively soft metal, is then cast into this recess; the seat is
thus at once produced, and will not require cutting in the lathe or otherwise.
The valve may be either flat or conical according to the form of the seat, and
it is preferred to introduce vulcanized india-rubber between the valve and the
frame to which it is fixed. Or, in place of employing a soft metal, seat, a
seat of other material may be used, and the valve may be made of any
suitable material, and when desired it may be faced with leather or other
.elastic material.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Benjamin Pitt and James John Shedlock in the Great Seal
Patent Office on the 28th May 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we BENJAMIN
PITT, of 3, Great Carter Lane, in the City of London, Engineer, and JAMES
JOHN SHEDLOCK, of 1, Wendale Villas, Earl's Court, Kensington, W., send.
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of November, in the year of
our Lord One thousand eight hundred and sixty-one, in the twenty-fifth
year of Her reign, did, for Herself, Her beirs and successors, give and
grant unto us, the said Benjamin Pitt and James John Shedlock, Her
special licence that we, the said Benjamin Pitt and James John Shedlock,
our executors, administrators, and assigns, or such others as we, the said
Benjamin Pitt and James John Shedlock, our 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 COCKS OR VALVES FOR THE PASSAGE OF FLUIDS," upon the

page_text: condition (amongst others) that we, the said Benjamin Pitt and.. James
John Shedlock, our exécutors or administrators, by an instrument in writing
under our or their hands and seals, or under the hand and seal of one..
of us, or them, should particularly describe and ascertain the nature of the
5 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.
.
t
;
NOW KNOW YE, that I, the said James John Shedlock, on behalf of
myself and the said Benjamin Pitt, do hereby declare. the nature of the said
Invention, and in what manner the same is 'to be performed, 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 cocks or valves for the
passage of fluids. For this purpose a box or case is employed having inlet,
and outlet passages at its ends; the valve works within this box or case, and
it is preferred that the box or case in which the valve works should be of a
square or rectangular section, and that the inlet and outlet passages at the
two ends thereof should be of a circular section, but of less diameter than the
ends of the box or case. Through one side of the box or case.a spindle or
axis passes into the interior of the box or case, a stuffing box being employed
to prevent the escape of the fluid around the axis. The inner end of the
spindle or axis turns in a suitable bearing, and has fixed upon it an excentric,
or it may be simply a projection. The valve is fixed to the end of a frame,.
which is supported by and slides on two ledges or guides on the interior of the
box or case. The spindle or axis, above mentioned, passes through the frame, so
that the cam or projection upon it will, when the axis is turned in one direction,
press the valve against its seat, and when the axis is turned in the opposite
direction will move the valve away from its seat. By thus arranging a
circular valve in a rectangular box or case the fluid will be able when the.
valve is open to pass between the periphery of the valve and the interior of the
box or case.
In some cases in forming the seat for the valve a suitable recess is made
where the seat is to be produced, and metal, which we prefer should be. type
or other comparatively soft metal, is then cast into this recess; the seat is thus
at once produced, and will not require cutting in the lathe or otherwise.
The valve may be either flat or conical according to the form of the seat, and
it is preferred to introduce vulcanized india-rubber between the valve and the
frame to which it is fixed; or, in place of employing a soft metal seat, a seat

page_text: DESCRIPTION OF DRAWINGS.
;
Figure 1 is a longitudinal section; Figure 2 is a transverse section
Figure 3 is a plan shewing the valve and general arrangement; Figure 4 is
a plan of the hood or cover. A, A, is the box or case, having inlet and outlet
passages, either (as is shewn in the Drawing) with sockets to take a cast-iron
pipe, or they can be made with flanges; or, if preferred, with female screw
ends to take a wrought-iron barrel. Through the stuffing box D the axis or
spindle B passes into the interior of the box or case, and is supported at the
bottom end by a step C', having a hole of sufficient size drilled to allow the
free movement of the bottom end of the spindle C, which is turned with a
shoulder. Upon the spindle or axis B is affixed, forming part thereof, a cam or
excentric E; or in some cases simply a projection. A lever J, or, if
preferred, a wheel, gives motion to the axis or spindle B, and which in
revolving forces the cam or projection against the inside of the frame G, which
being perfectly free, is thus forced forwards or backwards. Upon the frame G
is a valve F, which is pressed upon or withdrawn from the seat I by the
method described. The valve F is fitted loosely into the boss K, which forms
part of the frame G. Figure 1 shews the valve F pressed against the seat I,
and Figure 3 shews the valve withdrawn. The valve F, and with it the
frame G, are supported in the box or case by guides or, as is shewn in the
Drawing, four screws H. The valve F and valve seat I can be made of any
suitable material, that is, the seat can either be faced from the solid, or any
other metal or substance can be introduced.
Having thus described the nature of our Invention, and the manner of
performing the same, we.would have it understood that we make no claim to
any of the parts separately; but what we claim is, the combined arrangement
herein described.
In witness whereof, I, the said James John Shellock, have hereunto set
my hand and seal, this Twenty-sixth day of May, in the year of
our Lord One thousand eight hundred and sixty-two.
JOHN SHEDIACK
JAME
HES JOHN
JOHN
SHEDLOCK
(1.6.)