Improvements in and connected with Steam Taps and other Taps or Cooks.
Year: 1893

page_text: Date of Application, 1st Aug., 1893
Complete Specification Left, 29th May, 1894-Accepted, 1st Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in and connected with Steam Taps and other Taps or
Cooks.
1 SAMUEL GEORGE DUTTON of No. 41 Upper Manor Street Chelsea in the
County of Middlesex Wood Carver do hereby declare the nature of this invention
to be as follows:-
:-
This invention relates to improvements in the construction of taps or cocks and
has for its object to diminish the possibility of leakage by giving to the plug and
shell of the cock an increased area of working surface, and also to provide simple
means whereby such tap or cock can be removed from the boiler or other vessel to
which it is connected, for repairs or otherwise without lowering the pressure as is
necessary in taps of ordinary construction.
The first part of my invention consists in providing, in conjunction with a suitable
shell, a plug of such form that it shall have contact, and form a steam tight joint,
with the shell not only around its circumference, in the usual manner but also at
one end of the said plug which I enlarge for that purpose and arrange in the form
of a disc having a passage through it for the egress of steam or liquid.
This disc is preferably made to engage with and work upon a similar disc which
may form part of the body of the cock itself or be attached thereto in any suitable
manner, and having a corresponding passage way through it, so that by turning
the spindle with which the plug is provided the communications can be opened or
closed as desired.
In carrying into effect the second part of my invention I provide in conjunction
with a connecting piece into which the cock is screwed an outer and removable
framing or valve box to which is accurately fitted a sliding valve; this valve box
I construct in such a manner that it shall fit around the shoulder of the connecting
piece and part of the cock and make a steam tight joint therewith and so arranged
that upon the cock being partially unscrewed, the sliding valve can be pressed
down and so form a steam tight joint with the face of the connecting piece, thus
cutting off all communication with the source of pressure and thereby enabling the
cock to be removed at pleasure.
Dated this 1st day of August 1893.
COMPLETE SPECIFICATION.
Improvements in and connected with Steam Taps and other Taps or
Cocks.
I, SAMUEL GEORGE DUTTON, of 41 Upper Manor Street, Chelsea, in the
County of London, Wood Carver 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:-
This invention relates to improvements in taps or cocks and has for its object to
diminish leakage therefrom by providing the plug and that part of the shell in or
upon which the plug works with a greater surface area than is usually given to
ordinary taps, and also to provide means whereby such tap or cock can be removed
077

page_text: from the boiler or other vessel, to which it is connected, for repairs or for other
purposes, at any time that it may be desired.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings in which :-
Figure 1. is a vertical section of a tap provided with my improvements.
Figure 2: illustrates a cross section of the same on the line x, x, viewed from the
front.
Figure 3, represents an end view of the plug showing the enlargement or disc
and the opening or port-way therein as seen from the back.
Figure 4. illustrates a front elevation of the same.
Figure 5. shows the plug in longitudinal elevation.
Figure 6 illustrates a sectional elevation of a similar tap provided with my
improved arrangements by which the said tap can be disconnected from the boiler
or other vessel while under pressure.
Figure 7 represents a front elevation of the framing or valve box with the front
slides withdrawn and the slide valve raised.
Figure 8 is a plan view of the valve box with the slides and slide valve in
position.
Figure 9 represents a vertical section of the valve box attached to the connecting
piece, the tap having been removed from the boiler.
Figure 10, is a sectional elevation of a tap constructed according to a modification
of my invention.
Figure 11, is a back elevation of the front part of the shell of same with the plug
removed.
Figure 12, is a front elevation of the back part of the shell and
Figure 13 is a back elevation of the plug.
Similar letters of reference indicate corresponding parts in the several figures.
In carrying the first part of my invention into effect I construct the shell of the
tap in two parts A, and A 1, which are connected by means of the male and female
threads a, and a 1, or in some other suitable manner.
To the front part of the shell A, I accurately fit a hollow cylindrical plug B,
having an enlargement or disc C, provided with an opening or portway b, and an
outlet c, for the egress of steam or liquid when the said outlet is brought into a
position corresponding with the nozzle d.
I make the sides of the plug parallel and provide it with a spindle e, which passes
through the stuffing box f, and gland fl. To the end of this spindle I attach the
wheel 9, for the purpose of opening or closing the said plug.
To the back portion A. 1, of the shell I fit a disc C1, having an opening or
port way 1, corresponding in position to the port way b, when the tap is open,
but so arranged that all communication therewith is cut off when the plug is
reversed.
I may permanently fix this disc so that contact with it and the disc C, is maintained
and regulated by turning the stuffing box gland f1, which has a bearing upon the
closed end of the plug B, for that purpose.
the said gland and the plug B.
I may introduce a washer between
from the shell A 1, and guide the said disc in position by means of the pins h, h,
In some cases I make the disc C 1, detachable 4
upon which it works, see Figure 6; in this case the pressure of the steam in the
vessel to which the tap is connected will maintain the discs in contact.
Immediately behind the said disc C 1, I enlarge the passage way of the tap so
that it forms a conical chamber i, the object being to provide communication with
the port way b 1. I provide the tap with a screw thread j, for the purpose of
attaching it to the boiler or other vessel.
According to the second part of my invention I apply my improvements in such
a manner that when necessary the tap can be removed from the boiler or other
vessel without lowering the pressure or otherwise interfering with the work in
progress.
For this purpose I employ in conjunction with the cock illustrated in Figure 6 a

page_text: short connecting piece A 2 having a circular flange a 2 cast thereon, the said
connecting piece being adapted to screw on to the thread j, and also into the boiler
or other vessel by means of the thread k. To this connecting piece I fit a valve
box (see Figures 7 and 8) consisting of the sides D, D, the upper part of the
back D1, the slides F, F 1, the slide E, (see Figures 6 and 9), the screws I, I, and m
and the pin n see Figure 8.
I provide the slides F, F1 with a central opening o, Figures 6 and 9 having a
screw thread arranged to engage with the thread j. The slide F and the upper
part D 1 of the valve box are provided with an opening el, Figure 7, having a
recess d 1 formed around the circumference of the said opening and a slot d 2 into
which the flange a 2 is fitted, see Figure 6.
In or about the centre of the said valve box I fit a slide valve G in such a
manner that when the tap is unscrewed from the connecting piece A 2 and the said
slide valve is pressed down it will make a steam tight joint with the face of the
flange a 2.
Assuming the tap to be connected to a boiler under pressure and it is desired
to remove the said tap for the purpose of repairs or otherwise I proceed as
follows:-
Having removed the slides E, F and F 1, I place the framework D, D 1, over
the connecting piece A 2 so that it shall engage with the flange a 2. I then
introduce the slide E and secure the same by means of the screws L, L. The
slides F F 1 are then placed in position and having unscrewed the tap sufficiently,
I close the said slides until the threads with which they are provided engage with
the screw threadj; this being done, I secure the said slides by means of the screw m
and the pin n. I now introduce the slide valve G, and gradually unscrew the tap
until it is sufficiently released from the connecting piece A 2, to permit the said
slide valve to pass.
The slide valve G is now pressed down until it covers the
orifice of the flange a 2, when the tap may be removed and the plug H inserted in
its stead, which upon being screwed home, will maintain the said slide valve in
position and thus prevent the escape of steam or liquid.
According to the modification of my invention illustrated in Figures 10 to 13, I
construct the shell of the tap (as.in the case of the tap illustrated in Figure 1) in
two parts A and A 1, but I reverse the position of the screw threads by which they
are connected, that is to say I provide the front part A, with a male thread and
the back part A 1 with a female thread a 1. I also provide the gland f1, with a
female thread so that it shall work upon and not in the extremity of the shell.
a,
In lieu of a parallel plug furnished with an enlargement or disc working upon a
corresponding disc C 1, fitted to the back part of the shell A 1, I provide and
accurately fit a tapered plug B, having an enlargement C, adapted to work upon
the seating C 11, in the front part of the shell A. This plug is closed at one end
and is provided with a passage way P, and an opening c, which when in a position
corresponding with the nozzle d, of the tap permits the egress of steam or
liquid.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is.
I. The improved tap consisting in the employment, in conjunction with the outer
shell having the disc C1, attached or fitted thereto, of a hollow cylindrical plug
provided with the disc C, the said parts being arranged substantially as described
and illustrated by reference to Figures 1 to 6 of the accompanying drawings.
II. The improved stopping device consisting of the framework D, and D 1, the
slides E, F, and F 1, the slide valve G, and the screw plug H, arranged
substantially as and for the purposes described and illustrated in Figures 6, 7, 8
and 9.
III. The combination with the said stopping device, of a tap or cock provided
with the improvements described and illustrated in Figures 1 to 6

page_text: IV. A steam tap or other like tap having a tapered plug B, provided with the
enlargement C, adapted to work upon the seating C11, substantially as described
and illustrated in Figures 10 to 13.
D