Year: 1894

page_text: A communication from WILHELM ROTHMANN, Potter, and CURT RAMMER,
Master Locksmith, both of Dresden, Saxony, German Empire.
1, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent. Agent, do hereby declare the nature of this invention to be as
follows
-
In the valve constructed according to this invention the parts co-operating on the
plug or valve proper (hereinafter for convenience termed the valve plug), act only
in the direction of the opening .e. to lift the valve from the seat, the closing
taking place automatically through the pressure upon the valve.
The cock or valve requires no special packing-disc between the valve-plug and
the seat; and consequently there is a complete absence of the embarrassments in
connection with the renewal of the packing discs. As the closure is automatic the
water cannot run to waste, on account of fracture of any of the parts, or other
derangement, the valve-case may even be opened without causing any waste of
water
The valve-plug is provided with ribs by which it is guided inside the admission
end of the body. A partition wall at this same end is provided with a conical
opening which forms the seat of the valve-plug which is adapted to slide ficely
into said opening, so that the pressure in the service pipe prosses the valve-plug
tightly against the seat as long as no external influence is brought to bear upon it.
Fur the purpose however of opening the valve the valve-plug is acted upon by
a rod which at its outer end passes through a hearing inside the cock-body and at
the other end engages in a central recess in the valve-plug. On the outer end of
the rod presses a cam-disc fixed on the stem of the handle which latter is located
at the outside of the cock body. In the open position the valve plug is lifted
from its seat against the pressure in the service pipe by means of the cam and rod
so that it is thi ust in to allow the water to flow.
1 he handle stem may pass through a stufling-box in ordinary way but this is not
indispensable inasmuch as when the valve is closed there is no water in the
cock-body
Combined with an external resemblance to the common bib-cock, this new outlet
valve has all the advantage of a self-closmg valve in which the public see nothing
that is strange or unaccustomed. There is no doubt however that this valve is
more adapted for use with low pressures than for high pressures, because oven if
the cam be prolonged over nearly a complete revolution, the change from the open
to the closed position would be sudden and under encumstances which might be
dangerous or injurious to the service pipe.
For higher pressures therefore the following modification is to be recommended.
A screwed spindle operating in a screwed plug or nut acts upon the end of a 10d
(corresponding with that before-described) by turning the handle fixed on the
spindle, and this is less sudden as several turns of the handle are required to effect
the change from open to closed. The outer form of the valve is so far changed
that owing to the horizontal position of the spindle the form is become that of an
essentially cylindrically shaped body.
But it is also possible so to construct and aange the valve last described as

page_text: to retain the ordinary form of the bib-cock so that by the before mentioned
vertical stem the rod is thrust in and tho valve plug lifted off its seat and opened
A third modification is one in which the vertical stem of the haudle is formed
with a screw thread, 50 that it may be screwed in and out, and to its lower end has
fixed a cone-shaped projection adapted to bear against the head of the rod. It is
obvious that by screwing down the vertical stem the rod is axially thinst inwards
by the inclined cone-surface with the same result as in the previously described
modifications.
The before described tap or valve while specially serviceable for water supplies
is also applicable for controlling supplies of other fluids under pressure.
Dated this 28th day of December 1894.
BOULT & WADE,
Agents for the Applicant.
A communication from WILHELM ROTHMANN, Potter, and CURT RAMMER,
Master Locksmith, both of Dresden, Saxony, German Empire.
J, ALFRED JULIUS BOULT of 323 High Holboin in the County of Middlesex,
Chartered Patent Agent, 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 :-
In the valve constructed according to this invention the parts co-operating on
the plug or valve proper (hereinafter for convenience termed the valve plug), act
only in the direction of the opening- e., to lift the valve from the seat, the
closing taking place automatically through the pressure upon the valve.
The cock or valve requires no special packing-disc between the valve plug and
the seft; and consequently there is a complete absence of the embarrassments in
connection with the renewal of the packing-discs. As the closure is automatic,
the water cannot inn to waste, on account of fracture of any of the parts, or other
derangement; the valve-case may even be opened without causing any waste of
water
On the accompanying drawings are illustrations of the new valve or cock in
various forms. The first of these modifications (Figures 1 to 3) closes itself tightly
on the house-service, but contrary to the second inodification, (Figures 4-6), is
chiefly adapted to low pressures,
In these drawings -
Figure is a vertical longitudinal section of this first modification of the
improved valve,
Figure 2 is a horizontal section (as seen from underneath) with a partial view of
the outlet pipe in elevation.
Figure 3 is a separate cross section of the valve-plug.
Figures 4, 5 and 6 will hereinafter be referred to m detail.
The valve-plug is shown at a and is provided with radial ribs as shown by
which it is guided inside the tube b at the admission end of the body The
partition wall + at this same end 6 is provided with a comical opening which
forms the seat of the valve-plug, which is adapted to slide freely into said
opening, so that the pressure in the service pipe presses the valve-plug as long as
no external influence is brought to bear upon it tightly against the seat formed by
the comical side of the opening.
For the purpose, however, of opening the valve a the valve plug is acted upon
by a rod o (from the outside) which at its outer end passes through the stay
inside the cock-body B, and at the other end engages in a central recess in the

page_text: valve-plug a. On the outer end of the rod c presses the cam-disc d fixed on the
stem d of the handle D which latter is located at the outside of the cock-body.
Figures 1 and 2 show the open position wherein the coned valve plug a is lifted
from its sont b against the pressure of the water in the service pipe, by means of
the cam d and rod e so that it is thrust in, to allow the water to flow,
The handle stem may pass through a stuffing box in the ordinary way, but this
15 not indispensable, inasmuch as when the valve is closed there is no water in the
cock-body, R.
Combined with an external resemblance to the common bib-cock, this new outlet-
valve has all the advantage of a self-closing valve, in which the public see nothing
that is strange or unusual. There is no doubt, however, that this valve is more
adapted for use with low pressues than for high-pressures; because, even if the
cam be prolonged over nearly a complete revolution, the change from the open to
the closed position would be sudden, and under certain circumstances might be
dangerous or injurious to the sei vice-pipe.
For higher pressures, therefore, the second modification shown in Figure 4 a
vertical longitudinal and in Figure 5 in horizontal section, is to be recommended.
Figure 6 15 & cross section of the valve-plug, employed in Figures 4 and 5.
In this case a scrowed spindle e operating in a screwed plug or nut B' has a
prolongation e (corresponding with the rod before described) which is turned by
the handle D fixed on the spindle; and this is less sudden, in action as several
turns of the handle are required to effect the change from open to closed. The
outer form of the valve is so far changed, that, owing to the horizontal position of
the spindle, the form is become that of an essentially cylindrically-shaped body.
But it is also possible so to construct and arrange the valve last describel as to
retain the ordinary form of the bib-cock, so that by the before mentioned vertical
stem ', the rod c is thrust in, and the valve-plug a lifted off its seat and opened.
One construction of this third modification is shown in dotted lines in Figure 1.
The vertical stem of the handle D is in this case formed with a screw thread so
that it may be screwed in and out, and on its lower end is fixed a cone-shaped
projection adapted to bear against the head of the rod c. It is obvious that, by
screwing down the vertical stem ', the rod c is axially thrust inwards by the
inclined cone-surface with the same result as in previously described modifications.
Another modification consists in keeping the valve a rod c and screw-threaded
stem in the same vertical line and preserving the external appearance of u
bib-cock by making the partition 6+ horizontal in the shell of the cock; the cono k
and cam dare dispensed with.
The before described tap or valve while specially serviceable for water supplies
is also applicable for controlling supplies of other fluids under pressure
Having now particularly described and ascertained the nature of this said
invention as communicated to mu by my foreign corespondents, and in what
manner the saine is to be performed, I declare that what I claim is .—
1. An outlet valve wherein an automatic closure by means of the fluid-pressure
takes place, and having in the outlet-pipe (b) a valve-cone (a) and the conically
bored valve-seat in the partition wall (6+) in which the valve is easily movable
to and fro and wherein against the water-pressure it can be displaced from its seat
by the rode acting loosely against the valve-plug or cone a and moved axially by
turning the handle D substantially as and for the purpose hereinbefore described.
2. A modification of the outlet-valve described in Claim 1 wherein the
displacement of the rod (c) is effected by a cam d carried by the stem or rod
which is caused to rotate by means of the handle D affixed to its head, substantially
as and for the purpose herembefore described
3. A modification of the outlet-valve described in Claim 1 wherein the
displacement of the rod (c) is the result of its being arranged as an axial
prolongation of the screwed spindle (e) operated by the handle D substantially as
and for the purpose bereinbefore described.

page_text: 4. A modification of the outlet-valve described in Claim 1 wherein the
displacement of the rod (c) is effected by a screwed spindle which is at right
angles to the iod (c) and carries a cone (h) at its lower extremity which when
screwed down by the handle D drives the rod (c) inwards, substantially as and
for the purpose herein before described.
5. The tap on valve substantially'as and for the purpose described and illustrated
in Figures 1, 2 and 3 or 4, 5 and 6 of the accompanying drawings.
Dated this 13th day of September 1895.
BOULT & WADE,
Agents for the Applicant.