IMPROVEMENTS IN VALVES
Year: 1884

page_text: We GEORGE FREDERICK BUSBRIDGE of East Malling Mills in the County of
Kent Paper Manufacturer and JOHN. HENRY TURVEY of East, Malling aforesaid
Engineer do hereby declare the nature of our Invention for "IMPROVEMENTS IN
VALVES" to be as follows:-
.
This Invention has for its object, to provide a tight seating for valves which can
be easily and, inexpensively renewed when worn.
According to the said Invention a recessed part is formed in the casting or body
of the valve at the part where the valve is seated and in this recessed part'a ring
of India Rubber or other equivalent yielding material is placed upon which the
valve bears when forced to its seating. At the bottom of the recessed part in
which the India rubber ring or the like is placed a rib or ribs or recess or recesses
may be formed with which corresponding parts on the underside of the said ring
engage to better secure a perfect joint. The said ring when it becomes worn can
be readily removed from the recessed part and a new ring be substituted-It is.
preferred to make the valve. itself of a hemispherical or partially globular form
with a bearing edge of a V shape in section so as to give.a firm and 'tight closure.
By this Invention the necessity for expensive work in turning or facing the said
valve and its seat is obviated.
e 1884.
J. HENRY JOHNSON,
47, Lincolns Inn Fields, London, W.C.,
Agent for the said George Frederick Busbridge
and John Henry Turvey.

page_text: I GEORGE FREDERICK BUSBRIDGE of East Malling Mills, East Malling in
the County of Kent Paper Manufacturer and JOHN HENRY TURVEY of East
Malling aforesaid, Engineer do hereby declare the nature of this invention for
"IMPROVEMENTS IN VALVES" and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
This Invention has for its object to provide a tight seating for valves which
seating can be removed when worn and a new seating be substituted therefor
easily and inexpensively. We will describe the Invention with reference to the
accompanying drawing which represents in vertical section a valve constructed
according to our Invention.
According to our said Invention a recess A is formed in the casting or body B of
the valve at the part where the valve proper C is seated and in this recessed part A
a ring of India rubber or other equivalent yielding material D is placed upon which
the valve C bears when forced to its seating by means of the ordinary screw
spindle E or equivalent device. At the bottom of the recess A in which the ring
of India rubber D or the like is placed a rib or ribs or recess or recesses may be
formed with which corresponding depressions or projections on the underside of the
said ring D engage the better to secure a perfect joint between the said ring and
the recess in which it is situated. It is preferred to make the valve proper Ĕ of a
hemispherical or partly globular or. domed form as shewn with a bearing edge of
a V or W shape in section the latter preferred so as to give a firm and doubly
secure closure and it is also preferred to make the recess A and ring D wider at.
bottom than at top the better to secure the ring D in place. The said ring D when
it becomes worn can be removed, from the recess A and a new ring be put in its
place easily. rapidly and inexpensively and be again quite equal to a new valve.
By this Invention the necessity for expensive work in turning or facing the said
valve and its seat is obviated.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is
A valve having a seating consisting of a ring of yielding material held in a
recess in the valve casing and a valve proper for bearing upon the said ring
'substantially as hereinbefore described and illustrated in the accompanying
drawing.
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