IMPROVEMENTS IN COCKS AND WATER Gauges
Year: 1872

page_text: LETTERS PATENT to John Chadderton, Joseph Allmark, and Benjamin
Haigh, of the Alma Bridge Works, Dukinfield, in the County of
Chester, Engineers, for the Invention of "IMPROVEMENTS IN COCKS
AND WATER Gauges."
Sealed the 25th October 1872, and dated the 27th April 1872.
PROVISIONAL SPECIFICATION left by the said John Chadderton,
Joseph Allmark, and Benjamin Haigh at the Office of the Com-
missioners of Patents, with their Petition, on the 27th April 1872.
We, JOHN CHADDERTON, JOSEPH ALLMARK, and BENJAMIN HAIGH,
of the Alma Bridge Works, Dukinfield, in the County of Chester,
Engineers, do hereby declare the nature of the said Invention for "Im.
PROVEMENTS IN COCKS AND WATER GAUGES," to be as follows:-
:-
Our improvements relate to cocks in which the barrels are suspended
at their narrow ends inside shells, and consist mainly in making each
barrel and shell so that there shall be an entire passage round the barrel

page_text: without any midfeathers or partitions whatever, the barrel being cast to
the branch or passage at the exit end of the cock, so as to make a
circular passage opposite the hole in the barrel and plug without the
area being at all diminished.
These cocks are to be used for steam, hot and cold water, air, gases,
and other fluids; and when steam or hot water is used, the steam or
water being all round the barrel and branch when the steam or water is
shut off, the barrel and plug are maintained at an even temperature, and
the plug kept tight to the barrel. '
When the plug is open the steam or fluid passes in at the entrance
end of the cock through the bottom end of the barrel, and through the
passage in the plug to the exit end of the cock; and as the bottom end
of the barrel and inlet end of the plug are perfectly free and have no
connection with the outer casing except at the narrow end of the barrel
and at the branch no damage can be done to the working parts by
accident or even by blows on the outer casing, and the branch can be
placed at whatever angle desired, and obtain full-sized thoroughfares...
Our improvements in glass tube water gauges for steam boilers consist
in the application of an improved cock consisting of an inverted conical
plug fitting into a conical barrel at right angles with the gauge as it is
fixed to the boiler. Through the large end of this plug we arrange three
passages in the form of a T, two being opposite the passage in the
boiler and one to the glass tube, by which arrangement we are enabled
by turning the handle to obtain all the results with one tap at the
bottom of the gauge that are obtained by the two ordinary taps.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
•
filed by the said John Chadderton, Joseph Allmark, and Benjamin
Haigh in the Great Seal Patent Office on the 26th October 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
CHADDERTON, JOSEPH ALLMARK, and BENJAMIN HAIGH, of the Alma 30
Bridge Works, Dukinfield, in the County of Chester, Engineers, send
greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of April, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said John Chadderton, Joseph Allmark, and
Benjamin Haigh, Her special license that we, the said John Chadderton,
Joseph Allmark, and Benjamin Haigh, our executors, administrators,
and assigns, or such others as we, the said John Chadderton, Joseph
Allmark, and Benjamin Haigh, 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 AND WATER
GAUGES," upon the condition, amongst others, that we, the said John
Chadderton, Joseph Allmark, and Benjamin Haigh, by an instrument
in writing under our hands and seals, or under the hand and seal of
one of us, 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 we, the said John Chadderton, Joseph Allmark,
and Benjamin Haigh, do hereby declare the nature of our said Invention,
5 and in what manner the same is to be performed, to be particularly.
described and ascertained in and by the following statement, reference
being had to the Figures on the accompanying Sheet of Drawings, and
to the letters of reference marked thereon (that is to say) :-
Our improvements relate, first, to cocks in which the barrels are
O suspended at their narrow ends inside shells, and consist namely in
making cach barrel and shell so that there shall be an entire passage
round the barrel without any midfeathers or partitions whatever, the
barrel being cast to the narrow end of the shell and to the branch or
passage at the exit end of the cock, thereby allowing a circular passage
5 opposite the hole in the plug without the area being at all diminished,
and around the branch at the exit end there is a passage opening at both
ends into the space between the shell and the barrel; and on the
i

page_text: accompanying Sheet of Drawings one of these improved cocks is shewn
in Fig. 1, in which a represents the shell; b, the barrel; c, the plug;
d, the ingress branch; e, the egress branch; and f, the circular passage
round the branch at the exit end of the cock.
These cocks are to be used for steam, hot and cold water, air, gases, 1
and other fluids. And when steam or hot water is used the steam or hot
water being round the barrel and branch, both when the cock is open or
shut off, the barrel and plug are maintained at an even temperature and
the plug kept tight to the barrel.
When the plug is open the steam or fluid passes in at the entrance 1
end of the cock through the bottom end of the barrel, and through the
passage in the plug to the exit end of the cock, and as the bottom end of
the barrel and inlet end of the plug are perfectly free and have no
connection with the outer casing except at the narrow end of the barrel
and at the branch no damage can be done to the working parts by 1
accident or even by blows on the outer casing, and the branch can be
placed at whatever angle desired and obtain full sized thoroughfares.
Secondly. Our improvements in glass tube water gauges 'for steam
boilers consist in so arranging the plugs of the cocks that the thorough-
fares for the steam and water are formed in the large end of the plugs and 2
barrels, so that larger thoroughfares and greater wearing surfaces can
be obtained than in any gauges hitherto made, the barrels and plugs
being parallel with the front surface of the boiler, and the handles at
right angles to it, so that the plugs can be readily removed for fresh
grinding or repairs; and in Fig. 2 on the accompanying Sheet of 2
Drawings h represents the glass tube; i, the barrels ; k, the plugs; 2, the
thoroughfares; and m, the handles for turning the plugs.
Having now described the nature and particulars of our said Inven-
tion, we desire it to be understood that in cocks used for steam, hot and
cold water, air, gases, and other fluids, and in glass tube water gauges 3
for steam boilers, we claim for each cock the formation of the shell and
barrel without any midfeathers or partitions whatever, for the purpose of
enabling the whole area of the plug to be utilized, and also the circular
passage round the exit branch for communicating with the space between
the shell and the barrel; and for each gauge we claim the arrangement 3
that enables the thoroughfares to be made at the large ends of the plugs

page_text: and barrels for enabling the thoroughfares and wearing surfaces to be as
large as possible, as all such improvements are herein described, and
illustrated on the accompanying Sheet of Drawings.
In witness whereof, I, the said Joseph Allmark, for and on behalf
of myself and the said John Chadderton and Benjamin Haigh,
have hereunto set my hand and seal, this Twenty-fifth day of
October, in the year of our Lord One thousand eight hundred
and seventy-two.
0 Signed, sealed, and delivered by the
within-named Joseph Allmark, in
the presence of
CHA. W. COLLINS.
JOSEPH ALLMARK. (L.S.)