IMPROVEMENTS IN COCKS OR VALVES FOR STEAM OR Anizzan .....
Year: 1862

page_text: LETTERS PATENT to William Roberts and Thomas Greenacre, of Millwall,
in the County of Middlesex, for the Invention of "IMPROVEMENTS IN
COCKS OR VALVES FOR STEAM OR Anizzan .....
PROVISIONAL SPECIFICATION left by the said William Roberts and
Thomas Greenacre at the Office of the Commissioners of Patents, with
their Petition, on the 22nd May 1862.
We, WILLIAM ROBERTS and THOMAS GREENACRE, of Millwall, in the County
of Middlesex, do hereby declare the nature of the Invention for "IMPROVE-
MENTS IN COCKS OR VALVES FOR STEAM OR OTHER FLUIDS," to be as follows:-
This Invention has for its object improvements in cocks or valves for steam
or other fluids. For these purposes the stem or spindle of the valve passes
through a stuffing box formed in a chamber above the barrel or body of the
cock, within which the valve works, and such stuffing, box is divided from the
barrel or interior of the cock by a partition through which the spindle or stem
of the valve passes. The upper or outer end of the stem or spindle of the
valve has a handle fixed thereon. The inner or lower end of the spindle or
stem of the valve is formed with a screw thread, which fits into a female
screw formed in the upper end of the body of the valve, and the valve, which
is preferred to be conical and to have a conical seat, can be raised off its seat
by screwing the screw thread on the end of the spindle or stem into the
female screw. The valve when it is raised is received into a cylinder or

page_text: chamber above the passage or barrel of the cock through which the steam or.
other fluid flows to the outlet which is formed on one side of the barrel or
body of the cock or valve case. In the interior of the chamber into which
the valve is received when opened from its seat are projections or ribs, and
there are corresponding grooves in the upper end of the body of the valve by
which the valve is guided, and at the same time prevented from turning when
the end of the stem or spindle is screwed into or out thereof, or the valve may
be prevented turning by any convenient means. The seat of the valve is
made separate from the body or barrel of the cock or valve case, and is
formed in such manner as to be screwed into its place from the outside.
Around the spindle or steni of the valve where it comes above the partition
which separates the stuffing box from the interior of the barrel, there is
formed or affixed a projecting ring or collar which rests on the partition, and
above this, collar or projecting ring there is a disc or metal washer with a
screw thread at its circumference or periphery, by which it is screwed into the
stuffing box, which is formed with a female screw for the purpose; the collar
or ring around the spindle or stem is thus retained between the partition and
the disc screwed into the stuffing box, and by this means the stem or spindle
is prevented from moving endwise; the stuffing of the stuffing box is placed
above the screwed disc or washer, and is compressed therein in the usual
manner of making stuffing boxes around the stems or spindles of valves and
piston rods.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Roberts and Thomas Greenacre in the Great Seal
Patent Office on the 22nd November 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
ROBERTS and THOMAS GREENACRE, of Millwall, in the County of Middlesex,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of May, in the year of our
Lord One thousand eight hundred and sixty-two, in the twenty-fifth year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto us, the said William Roberts and Thomas Greenacre, Her special licence
that we, the said William Roberts and Thomas Greenacre, our executors,
administrators, and assigns, or such others as we, the said William Roberts
and Thomas Greenacre, our executors, administrators, and assigns, should at

page_text: any time agree with, and no others, from time to time and at all times there-
after 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 "IMPROVE-
MENTS IN COCKS OR VALVES FOR STEAM OR OTHER FLUIDS," upon the condition
(amongst others) that we, the said William Roberts and Thomas Greenacre,
our executors 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 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Roberts, on behalf of myself
and the said Thomas Greenacre, do hereby declare the nature of the said
Invention, and in what manner the same is to be performed, to be par-
ticularly 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 steam
or other fluids. In constructing cocks or valves according to our Inve.ition
the stem or spindle of the valve is caused to pass through a stuffing box at
the top of the barrel or body within which the valve works. The stuffing box
is divided from the barrel or body by a partition, through which the stem or
spindle of the valve passes; and there is a collar on the stem or spindle which
is enclosed between the upper side of the partition and the bottom of the
stuffing box, which is screwed down into its place over the collar, the interior.
of the stuffing box having a screw thread cut in it to admit of this being done.
The upper or outer end of the stem or spindle of the valve has a handle fixed
upon it, by means of which it may be turned round, and the inner or lower
end of the stem or spindle has a screw thread formed upon it which fits into a
female screw formed in the upper end of the piece forming the valve, and the
valye which it is preferred should be conical at the bearing surface, and have
a. conical seat, can be raised off its seat by turning the, stem or spindle, and
causing the screw thereon to descend through the female screw. The valvė
when it is raised is received into the upper part of the barrel or body, where
there are projections or ribs which guide the piece forming the valve, and
prevent it turning whilst it is being raised or lowered. The seat of the valve
is made separate from the barrel or body, and is screwed into its place at the
lower end thereof from the outside. The outlet for the fluid to pass away
from the cock or valve is formed in one side of the barrel or body.

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side view, and Figure 2 a vertical section of a cock or valve
constructed as above described; Figure 3 is a horizontal section of the same'
taken at the line A, B, Figure 2.
a is the inlet passage; 6 is the barrel or body with the outlet passage b¹ in.
one piece with it; c is the valve, which is conical at its bearing surface, and
has a female screw at the top,-it. fits against the seat d, the bearing surface of
which is similarly formed; this seat is screwed into its place in the barrel or
body from the under side after the valve has been introduced; e is the stem
or spindle, having a screw thread at its lower end at e' which fits into the
fémale screw of the valve; e² is a hand wheel at the top of the spindle; e and
is a collar on the spindle which rests upon the partition 63 of the barrel or
body, and is kept down thereon by the ring f¹ which is screwed down into the'
chamber of the stuffing box f to form the bottom thereof; f' is the cover of
the stuffing box, which when screwed down compresses the packing in the
stuffing box around the stem or spindle; thus it will be seen that the stem or
spindle can turn freely in the stuffing box, but cannot move longitudinally.
The projections or ribs in the upper part of the barrel or body b which guide
the valve and prevent it turning are shown at 63, 63, in Figures 2 and 3.
Figure 4. is a side view of another cock or valve of which the internal con-
struction is similar to that already described, it differs only in being arranged
to screw into a socket at the bottom, and in the form given to the outlet
passage.
..
Figure 5 is a side view partly in section of another similar arrangement; in
this case the cock or valve is adapted for a stand pipe, it is made with two
outlet passages, and there is a cap which can be transferred from the one to
the other. The inlet passage is a tube made suitable to be applied to a street
main; * is a lug on the exterior of the body or barrel to admit of the cone at
the bottom of the stand pipe being driven by means of it into the sockets on
the main.
Figure 6 is a side view of another similar arrangement, it is like that shown
at Figure 5; but adapted to be permanently fixed.
In place of employing a conical valve as shewn at c, Figures 2 and 3, a flat
valve may be employed..
Figure 7 is an end view, and Figure 8 a vertical section of a cock or valve

page_text: in which a flat valve is employed. The valve face d is in this case screwed in
on one side of the body or barrel b, and the barrel is altered in form to suit
the altered shape given to the valve; and it has inclines 63 formed upon it,
behind which the valve enters, these ensure the valve being firmly held against
its face when forced down by the screw.
In witness whereof, I, the said William Roberts, have hereunto set my
Wы. ROBERTS. (L.S.)