Improvements in Pump-valves.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Pump-valves.
I, JOHANN STUMPF, of 27, Ranke Strasse, of Charlottenburg, near Berlin,
Kingdom of Prussia, German Empire, Professor, do hereby declare the nature
of this invention to be as follows:-
In pump valves of large diameter, leather packings have usually been
5 employed to tighten the valve rings against the seat of the valves, and the length
of the stroke elastically was determined by means of buffers, formed by caout-
chouc cylinders arranged around the valve spindle and which pressed against
the body of the valve.
The object of my invention is to provide buffer rings acting at the same time
as packing rings thus attaining a simple construction. The ring forming the
essential feature of my invention, determines the length of the stroke and
during the return of the valve overlaps the edges of the valve rings, so that
they are rendered tight against the seat of the valve.
In order to make my invention more clear, I refer to the accompanying draw-
ing, in which a sectional view of a valve according to my invention is repre-
sented. a is a valve casing within which is arranged the valve-seat b of ordi-
nary form. The valve seat
by the rings d. These valve rings d are guided within the openings by means
is provided with two annular openings c closed
of suitable projections d. Above the valve seat 6 a ribbed finger e is arranged
and is pressed upon the seat of the valve by a pressure ring f and connecting
rods g.
Above the valve rings d hollow rings e¹ of inverted U-form section are located.
Within these rings el are loosely mounted caoutchouc rings h which at their
lower extremities are so arranged as to correspond to the form of the valve
rings d and to place their feet against the seat of the valve.
When now water flows through the valve, the valve-rings d are raised and
the caoutchouc rings h are compressed to a certain extent, thus determining the
stroke of the rings d. Owing to the pressure of the water the lower edges of
the caoutchouc rings are lifted easily and the water can pass freely.
In reversed direction the water presses the rings h upon the valve seat whereby
secure and tight joint is effected.
It is evident that this arrangement can also be employed with plate valves.
n such valves it would be only necessary that an annular edge of the caoutchouc
ings covers the valve.
Dated this 11th dow of
By GEO. THOS. HYDE,
No. 1, Broad Street Buildings, Liverpool Street, E.C.,.
Agent for the Applicant.

page_text: I, JOHANN STUMPF, of 27, Ranke Strasse, of Charlottenburg, near Berlin,
Kingdom of Prussia, German Empire, Professor, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be parti-
cularly described and ascertained in and by the following statement:―
In pump valves of large diameter, leather packings have usually been
employed to tighten the valve rings against the seat of the valves, and the length
of the stroke elastically was determined by means of buffers, formed by caout-
chouc cylinders arranged around the valve spindle and which pressed against
the body of the valve.
The object of my invention is to provide buffer rings acting at the same time
as packing rings thus attaining a simple construction. The ring forming the
essential feature of my invention, determines the length of the stroke and
during the return of the valve overlaps the edges of the valve rings, so that
they are rendered tight against the seat of the valve.
In order to make my invention more clear, I refer to the drawing filed with
the Provisional Application, in which a sectional view of a valve according to
my invention is represented. a is a valve casing within which is arranged the
valve seat of ordinary form. The valve seat 6 is provided with two annular
openings e closed by the rings d. These valve rings d are guided within the
openings by means of suitable projections d¹. Above the valve seat ba ribbed
finger e is arranged and is pressed upon the seat of the valve by a pressure
ring and connecting rods g.
Above the valve rings d hollow rings el of inverted U-form section are located.
Within these rings el are loosely mounted caoutchouc rings h, so as to corre-
spond to the form of the valve rings and to press their feet against the seat of
the valve.
:
When water flows through the valve, the valve-rings d are raised and the
caoutchouc rings h are compressed to a certain extent, thus determining the
stroke of the rings d. Owing to the pressure of the water the lower edges of
the caoutchouc rings are lifted easily and the water can pass freely.
In reversed direction the water presses the rings h upon the valve seat whereby
a secure and tight joint is effected.
It is evident that this arrangement can also be employed with plate valves.
In such valves it would be only necessary that an annular edge of the caoutchouc
rings covers the valve.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
In pump valves, the combination with caoutchouc buffer rings (h) arranged
at their lower extremities for covering the valve rings (d) and pressing against
the valve seat, for the purpose and substantially as described..
Dated this 26th day of Januar 1900.
GEO. THOS. HYDE,
1, Broad Street Buildings, London, E.C.
Agent for the Applicant.