Year: 1894

page_text: Date of Application, 21st Mar., 1894
Complete Specification Left, 19.h Dec., 1894-Accepted, 26th Jan., 1895
We JOHN DEWRANCE and GEORGE HENRY WALL, both of 158 Great Dover
Street, London, S.E., Engineers, do hereby declare the nature of this invention
to be as follows:-
When an automatic valve is applied to the upper arm of a water gauge it is
desirable that means should be provided for with-holding and for pushing the
automatic valve from its seat when it is desirable that the passage in the upper
arm should not be closed by the automatic valve.
Without such an arrangement the automatic valve prevents the passage through
the upper arm and the glass being efficiently and fully blown through, and it is
possible that the pressure may not enter the glass tube under all circumstances.
The passage of the upper arm and the glass tube cannot be properly blown
through unless the lower arm cock is shut off.
We mount a rod upon a lever connected to the lower arm cock, the upper end of
this rod we attach to a lever at the side of the upper arm of the water gange;
this lever is suitably connected to a spindle that passes through a stuffing box into
a chamber in which the automatic valve works. The end of the spindle that
moves in the chamber is so formed that when the lower arm cock is open the
automatic valve is free to come to its seat and close the passage leading to the glass
tube, but when the lower arm cock is shut off the automatic valve is with-held
from its seat, or if it happens to be on its seat it is pushed away from it.
It is obvious that the rod may move a spindle working vertically which spindle
may enter the automatic valve chamber either at the under side or the top side of
the upper arm, and in either case with-hold or push the ball from its seat as
previously described.
Either of these forms of spindle may be employed without connecting them to
the lower arm cock, in such cases they would be provided with suitable handles to
be worked independently.
When we wish to control the automatic valve independently as last mentioned,
we prefer to employ a kind of cage or holder to contain the automatic valve.
The spindle attached to the cage passes out through a stuffing box, and the
handle that turns it indicates whether the automatic valve will come to its seat
or not.
In order to prevent the torsional strain on the glass tube that is exerted by the
nut of the stuffing box, we make the loose glands hexagonal or of other suitable
shape, so that it is prevented from turning with the nut; this feature may be
applied to glands of the usual form as well as to the glands hereinafter described.
In order to facilitate the putting in of a new glass tube, we make the glands to
contain the packing instead of the packing being in the stuffing boxes as
heretofore.
There are projections on the screws of the water gauge which we prefer to make
hexagonal, the end surfaces of these projection make a joint against the packing in
the glands when the glands are drawn up by the nuts.
A portion of the interior of the glands we make hexagonal to fit the projections
before mentioned.
The portion of the interior of the glands where the packing is, we prefer to

page_text: make round, so that the packing rings when sprung into the gland will not readily
come out, and as the packing rings fit tight upon the glass tube, the gland will be
held up in position while the nut of the upper arm is being lifted and screwed up.
The remaining portion of the interior of the glands is made round a little larger
than the diameter of the glass tube. We prefer to make these glands inter-
changeable, and spare glands, packing rings, and glass tubes may be kept ready to
be put in when a glass tube bursts.
As the packing is contained in the glands instead of in the water gauge itself
the old packing is removed with the glands and can be cleaned out at leisure.
The packing after being in use for some time may adhere to the projections; to
facilitate the removal of the glands we provide suitable means by which the power
of the nuts is utilized for drawing the glands off; the portion of a gland that fits
the glass tube is made to extend through the end of the nut and has a groove
formed around its outer surface. A piece of metal hereinafter called a fork fits
into the groove so that when the fork is in place the gland must follow the nut
when it is screwed off, but by drawing the fork from the groove the gland is
disengaged from the nut.
Instead of the fork a pin may be employed to engage in the groove.
D
1
100
JOHN DEWRANCE.
GEORGE HENRY WALL.
We JOHN DEWRANCE and GEORGE HENRY WALL, both of 158 Great Dover
Street, London, S.E., Engineers, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
When an automatic valve is applied to the upper arm of a water gauge it is
desirable that means should be provided for withholding and for pushing the
automatic valve from its seat. Without such an arrangement the automatic valve
prevents the passage through the upper arm and the glass tube being efficiently
and fully blown through. Moreover the passage of the upper arm and the glass
tube cannot be properly blown through unless the lower arm cock is shut off.
We mount a rod upon a lever connected to the lower arm cock, the upper end of
this rod we attach to a lever at the side of the upper arm of the water gauge ;
this lever is suitably connected to a spindle that passes through a stuffing box into
a chamber in which the automatic valve works.
The end of the spindle that moves in the chamber is so formed that when the
lower arm cock is open the automatic valve is free to come to its seat and close
the passage leading to the glass tube, but when the lower arm cock is shut off the
automatic valve is withheld from its seat, or if it happens to be on its seat it is
pushed away from it.
It is obvious that the rod may move a spindle working vertically which spindle
may enter the automatic valve chamber either at the under side or the top side of
the upper arm, and in either case withhold or push the ball from its seat as
previously described. Either of these forms of spindle may be employed without
connecting them to the lower arm cock, in such cases they would be provided with
suitable handles to be worked independently.
When we wish to control the automatic valve independently as last mentioned,
we prefer to employ a kind of cage or holder to contain the automatic valve. The
spindle attached to the cage passes out through a stuffing box, and the handle that
turns it indicates whether the automatic valve will come to its seat or not.

page_text: In order to prevent the torsional strain on the glass tube that is exerted by the
nuts of the stuffing boxes we make the loose glands hexagonal or of other suitable
shape, so that they are prevented from turning with the nuts this feature may be
applied to glands of the usual form as well as to the glands hereinafter described.
In order to facilitate the putting in of a new glass tube, we make the glands to
contain the packing instead of the packing being in the stuffing boxes as
heretofore.
There are projections on the screws of the water gauge which we prefer to make
hexagonal, the end surfaces of these projections make joints against the packing in
the glands when the glands are drawn up by the nuts.
A portion of the interior of the glands is made hexagonal to fit the projections
before mentioned.
The remaining portion of the interior of the glands is made round a little larger
than the diameter of the glass tube.
We prefer to make these glands interchangeable, and spare glands, packing rings,
and glass tubes may be kept ready to be put in when a glass tube bursts.
As the packing is contained in the glands instead of in the water gauge itself
the old packing is removed with the glands and can be cleaned out at leisure.
The packing after being in use for some time may adhere to the projections. To
facilitate the removal of the gland we provide suitable means by which the power
of the nuts is utilized for drawing the glands off; the portion of a gland that fits
the glass tube is made to extend through the end of the nut and has a groove
formed around its outer surface.
A piece of metal hereinafter called the fork fits into the groove so that when the
fork is in place the gland must follow the nut when it is screwed off, but by drawing
the fork from the grooves the gland is disengaged from the nut.
Instead of a fork a pin may be employed to engage in the groove.
In the accompanying drawings Sheet 1, represents the water gauge in which the
automatic valve in the top arm is mechanically held from its seat when the cock in
the lower arm is closed.
Fig. 1 is a side elevation partly in section; and Fig. 2 is a front elevation partly
in section.
A, is the rod.
B, the lever connected to the plug of the lower arm cock.
C is the lever to which the top of the rod A is attached.
D, is the spindle to which the lever C is connected.
E, is the stuffing box through which the spindle passes.
F, is the chamber in which the automatic valve works.
G is the end of the spindle that on being turned into a certain position prevents
the ball coming to its seat.
H, is the automatic valve.
Sheet 2 represents the water gauge in which the automatic valve is held from
its seating by turning an independent handle.
Fig. 5 is a side elevation partly in section, and Fig. 6 is a front elevation of the
same.
J, is the handle, in the position shown the automatic valve can come to its seat,
but not when this handle J is turned.
K, is the spindle to which the handle is fixed.
L, is the automatic valve.
M, is the cage or holder to contain the automatic valve, another view of which
is shown by Fig. 7.
One side of this cage is sufficiently open to allow the automatic valve to come
to its seat when the cage M is in one position; when it is in any other position the
ball is prevented from coming to its seat.
All the views show our improvements in the stuffing boxes.
R, is the interchangeable gland that contains the packing, a perspective view of
which is shown by Fig. 3.

page_text: S, is the hexagonal projection on the screw of the water gauge which fits into a
corresponding hexagonal part in the gland R.
T, is the packing ring.
Fig. 4 shows the spring fork.
V, is the groove into which the fork fits.
W, is the nut that forces the gland on to the projection and compresses the
packing ring T.
Having now particularly described and ascertained the nature of our inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
The improved apparatus and arrangement hereinbefore described whereby in a
water gauge-
Firstly. The automatic valve in the top arm is mechanically held from its seat
when the cock in the lower arm is closed.
Secondly. The automatic valve in the top arm is mechanically held from its seat
when the handle J is in any but a certain position.
Thirdly. The stuffing box does not subject the glass tube to torsional strain
when the nuts are screwed up and the interchangeable glands contain the packing
all substantially as herein before described and illustrated by the accompanying
drawings.
Dated this 18th day of December 1894.
JOHN DEWRANCE.
GEORGE HENRY WALL.