IMPROVEMENTS IN STOP VALVES AND TAPS
Year: 1875

page_text: LETTERS PATENT to Charles Stuart, of Halifax, in the County of
York, for the Invention of "IMPROVEMENTS IN STOP VALVES AND
TAPS."
Sealed the 15th June 1875, and dated the 5th February 1875.
PROVISIONAL SPECIFICATION left by the said Charles Stuart at the
Office of the Commissioners of Patents, with his Petition, on the
5th February 1875.
I, CHARLES STUART, of Halifax, in the County of York, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN STOP
VALVES AND TAPs," to be as follows:-
My Invention consists in an arrangement or means employed för
raising and lowering the valve, dispensing with the necessity of screwed
spindles, also producing a full lift of the valve by a comparatively slight
turn of the spindle.
Movement is given to the valve through a spindle, within which is
fitted so as to slide freely (telescopically) the boss of a bevel wheel which

page_text: is made to gear into another bevel wheel attached to a spur wheel. The
spur wheel is made to gear into a rack or its equivalent within the valve
box. To the spur wheel the valve is attached, a rotary motion being
given to the herein-before mentioned spindle, and is from thence con-
veyed by means of the bevel wheels to the spur wheel, causing it to run
up or down the rack, as may be required, carrying with it the valve;
thereby the outlet or outlets may be opened or closed at pleasure.
During the downward movement of the valve the face of the valve is
forced outwards by a screw arrangement against a face prepared to
receive it in the valve box, whereby the valve can be made perfectly
tight when closed.
•>>
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Stuart in the Great Seal Patent Office
on the 5th August 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
STUART, of Halifax, in the County of York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of February, in the year
of our Lord One thousand eight hundred and seventy-five, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Charles Stuart, Her special licence, that I
the said Charles Stuart, my executors, administrators, and assigns, or
such others as I, the said Charles Stuart, 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 "IMPROVEMENTS IN STOP VALVES AND TAPS,"
upon the condition (amongst others) that I, the said Charles Stuart,
my executors or 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 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.

page_text: wheel 7 may form the face of the valve, as shewn at 2. The face of
another spur wheel 8 of a similar character to spur wheel 7 may be
employed for the other valve, as shewn at 1. One of these spur wheels
is, made to gear into the rack 9, as shewn at Figures 1, 2, and 3.
When required the other spur wheel may gear into the rack 12, as
shewn in dotted lines at Figure 3. I prefer two spur wheels 7 and 8,
so that when one wheel becomes worn the other can take its place. The
two spur wheels 7 and 8 are mounted on the T shaft 10, the spindle of
Tho
which is made to work freely in the boss of the bevel wheel 4.
spindle 3 is made taper at its bearing in the box, as shewn at 11, to
dispense with packing.
My second arrangement of spindle and valve is shewn at Figures 1, 2,.
and-3, in which a is the valve box; b is a spindle on which is provided:
the cross head c, and on it are carried the spur wheels d and e and the
bevel wheels d' and e¹. The spur wheel d is made to gear into the rack 9.
When required the spur wheel e may gear into rack 12, shewn in dotted
lines at Figure 3. On the face of the spur wheels d and e are mounted
the valves fand g. Between the spur wheels d'and e and the valves f
and g are provided the inclines h and i, so that continuing to turn the
spur wheels d and e after the valves fand g have been brought down
into position the face of the inclines h and i cause the valves ƒ and g to
move outwards and press against the face of the valve box a. The
rotary motion is imparted to the spur wheels d and e from the bevel
wheel (which is keyed on the spindle 6), being transmitted thereto
through the bevel wheel d¹ and e¹. In this arrangement of spindle I
employ the stuffing box K for the purpose of keeping the valve box a
steam or water-tight. The gland / may be fitted either in the interior
of the valve box a, as shewn, or on the exterior. During the downward
movement of the valves fand g the face of the valves ƒ and g may be
forced outwards by a screw arrangement against a face prepared to
receive them in the valve box, whereby the valves can be made perfectly
steam or water-tight when closed.
The herein-before mentioned inclines h and i, and the screw arrange-
ment may be attached to the valves 1 and 2, Figure 4.
Having now described the nature of my said Invention, and shewn
by. Drawings how the same may be carried into practice, I would remark
in conclusion that I do not limit myself to the exact limits, details, or

page_text: configuration of the various parts I have explained and shewn, as the
same may be varied or modified without departing from the nature of
my Invention; but what I do claim and desire to be secured to me by
Letters Patent is,-
.
Firstly. The arrangement, construction, and application of racks 9.
and 12 and spur wheels d and e, 7 and 8, in combination with valves 1
and 2, Figure 4, and ƒ and g, Figures 1, 2, and 3, and the means
employed for actuating the same, substantially as herein set forth.
Secondly. The combination of the various parts forming the stop valve,
substantially as herein set forth.
In witness whereof, I, the said Charles Stuart, have hereunto set
my hand and seal, this Fourth day of August, in the year of our
Lord, One thousand eight hundred and seventy-five.
ATL