CERTAIN IMPROVEMENTS IN COCKS, TAPS, OB VALVES
Year: 1853

page_text: LETTERS PATENT to James Slater, of Salford, in the County of Lancaster,
Mechanic, for the Invention of "CERTAIN IMPROVEMENTS IN COCKS, TAPS, OB
VALVES."
Scaled the 30th June 1854, and dated the 31st December 1853.
PROVISIONAL SPECIFICATION left by the said James Slater at the Office
of the Commissioners of Patents, with his Petition, on the 31st December
1853.
I, JAMES SLATER, of Salford, in the County of Lancaster, Mechanic, do
hereby declare the nature of my said Invention for "CERTAIN IMPROVEMENTS IN
COCKS, TAPS, OR VALVES," to be as follows:-
My improvements consist, first, in the constructing of cocks, taps, or
valves; and,
Secondly, in the method or manner of working the said cocks, taps, or
valves of any kind or description, or for whatever purpose required.
At any convenient part within the bore or passage of the cock or tap is
formed a chamber of larger diameter or dimensions than the said bore or
passage. Upon one edge or side of this chamber is formed a seat or bed, having
a valve fitted into or upon it, and which valve is withdrawn from the said seat
or bed and thereby opened, or is pressed against it and closed by means of an
eccentric or cranked stud or pin fixed to the end of or forming part of the
spindle, by which the valve is opened and shut as required; and which eccentric
stud or pin moves in a slot or groove formed in the top or head of the valve.
Where valves are required to be kept open at a "dead lock," or open at
different or changing areas they may be worked by a worm wheel and worm,

page_text: or other wheels, or other description of mechanism, or they may be simply
opened and closed by a hand lever. By means of the chamber in the bore or
passage of cocks or taps, any obstruction to the passage of whatever fluids may
be required to pass through or by them is avoided, and an area equal to the
delivery is provided. The eccentric motion is applicable to all valves having
or requiring to be given to them a reciprocating action.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Slater in the Great Seal Patent Office on the 30th
June 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I. JAMES
SLATER, of Salford, in the County of Lancaster, Mechanic, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent bearing date the Thirty-first day of December, One thousand eight
hundred and fifty-three, in the seventeenth year of Her reign, did, for
Herself, Her heirs and successors, give and grant unto me the said James
Slater, Her especial licence that I, the said James Slater, my executors,
administrators, and assigns. or such others as I, the said James Slater,
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 "CERTAIN IMPROVEMENTS IN COCKS,
TAPS, OR VALVES," upon the condition, amongst others, that 1, the said James
Slater, by an instrument in writing under my hand and seal, 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 I, the said Janes Slater, 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
and accompanying Drawings, that is to say:-
My improvements consist, first, in the construction of cocks, taps, or
valves; and,
Secondly, in the method or manner of working the said cocks, taps, or
valves, of any kind or description, or for whatever purpose required.

page_text: At any convenient part within the bore or passage of the cock or tap, and
before the entrance to the valve, is formed a chamber of larger diameter or
dimensions than the said bore or passage. Upon one edge or side of this
chamber is formed a seat or bed having a valve fitted into or upon it, and
which valve is withdrawn from the said seat or bed and thereby opened, or is
pressed against it and closed by means of an eccentric or cranked stud or pin
fixed to the end of or forming part of the spindle by which the valve is opened
and shut, as required. and which eccentric stud or pin moves in a slot or
groove formed in the top or head of the valve. Where valves are required to
be kept open at a "dead lock," or opened at different or changing areas, they
may be worked by a worm wheel and worm, or other description of mechanism,
or they may be simply opened and closed by a hand lever. By means of the
chamber in the bore or passage of cocks or taps, any obstruction to the passage
of whatever fluids may be required to pass through or by them is avoided, and
an area equal to the delivery is provided. The eccentric motion is applicable
to all valves having or requiring to be given to them a reciprocating action.
But in order that my improvements may be better explained and more
perfectly understood in detail, I have hereunto attached a Sheet of Drawing,
the various Figures being about half actual size. Fig. 1 represents a longitu-
dinal section of a bib cock, furnished with my improvements. Fig. 2 exhibits
a plan of the valve and guides employed in Fig. 1, and particularly delineates
the eccentric when the valve is closed, as shown. Fig. 3 represents a longitu-
dinal elevation in part sectional of a stop valve, with my improvements
attached. Fig. 4 exhibits a plan of the valve and guides in Fig. 3, and par-
ticularly illustrates the position of the crank when the valve is closed. In
Fig. 1, a, a, is the tap or cock with the valve closed; b, the guides; c, the
eccentric, the action of which will be more apparent on reference to Fig. 2,
the whole is operated upon by the usual or common hand lever d.
In Fig. 2,
c represents the eccentric; d, the spindle or shaft of the same; b, the guides.
Fig. 3 illustrates a stop valve, with my improvements; shows the valve
closed; f, its guides, operated upon by the crank shaft or spindle; g, the
appropriate gearing, the worm wheel h, and worm j, with the hand wheel k, aro
shown in elevation. In Fig. 4 the action of the crank g is more plainly
illustrated; f being the guide, and 7 the disc in which it operates.
Having thus particularly described my improvements, I wish it to be
distinctly understood that I claim,―
First, the adaptation or construction of a chamber situated before the
entrance to the valve, in cocks, taps, or valves, such chamber being larger in
diameter than the bore of the valve..

page_text: Secondly, in the use or employment of an eccentric or crank for opening
and closing valves, as well as the worm and wheel or quadrant, as herein par-
ticularly set forth and described, and clearly exhibited in the Drawings
annexed.
In witness whereof, I, the said James Slater, have hereunto set my hand
and seal, the Twenty-ninth day of June, in the year of our Lord One
thousand eight hundred and fifty-four.
JAMES SLATER. (LS.)