Improvements in or connected with Stop Valves.
Year: 1896

page_text: Date of Application, 18th Nov., 1896
Complete Specification Left, 8th July, 1897-Accepted, 14th Aug., 1897
PROVISIONAL SPECIFICATION.
Improvements in or connected with Stop Valves.
I, PERCY HULBURD, of the Hulburd Engineering Company, of 150, Leadenhall
Street, in the City of London, Contractors, do hereby declare the nature of this
invention (A communication to me by H. Weeren, of Falkenstrasse, Dresden, in
the Empire of Germany, Merchant,) to be as follows: -
This invention relates to improvements in or connected with stop valves and has
for its object to so construct such valves that their faces can be renewed, should
they become worn, with great facility and at a very small cost.
According to my invention I form the seat of the valve slightly conical and
instead of forming the valve proper with a conical face adapted to fit into the
conical seat of the valve, as in such valves as heretofore usually constructed, I
provide the said valve with a ring of a suitable material preferably of seamless
copper, the said ring being secured to the valve by suitable means, such as by
nuts, whereby it can be easily attached to, and removed from, the valve.
With this construction of valve it will be obvious that the copper ring, which
fits into the slightly conical seat, can, should it become worn, be easily detached
from the valve and replaced by a new ring, thus avoiding the expense of renewing
the valve which is necessary with valves as hitherto generally made.
It will also be obvious that a valve having my improvements can be screwed
up more tightly than valves as ordinarily constructed and that the seat, as it is
only slightly coned, is not so liable to collect or retain foreign matter as ordinary
valve seats which are more tapered.
Dated the 10th downt
Improvements in or connected with Stop Valves.
I, PERCY HULBURD, of the Hulburd Engineering Company, of 150, Leadenhall
Street, in the City of London, Contractors, do hereby declare the nature of this
invention (A communication to me by H. Weeren, of Falkenstrasse, Dresden, in
the Empire of Germany, Merchant,) 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 or connected with stop valves and has
for its object to so construct such valves that their faces can be renewed, should
they become worn, with great facility and at a very small cost.

page_text: According to my invention I form the seat of the valve slightly conical and
instead of forming the valve proper with a conical face adapted to fit into the
conical seat of the valve, as in such valves as heretofore usually constructed, I
provide the said valve with a ring of a suitable material, preferably a seamless
copper ring, the said ring being secured to the valve by suitable means, such as by
nuts, whereby it can be easily attached to, and removed from, the valve.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which:-
Figure 1 is a sectional elevation of a stop valve having my improvements applied
thereto; and,
Figure 2 is an elevation of the valve proper made according to my invention.
a is the stop valve and 6 the valve seat thereof, the said seat b being made
slightly conical. is the valve proper which is operated in the ordinary manner
by the screwed spindle d rotated by means of the hand wheel e and f is my ring,
preferably seamless and made of copper, the said ring forming the face of the
valve and being adapted to make contact with the conical valve seat b. The
ring is secured to the valve by means of the nuts g, h as clearly shewn.
With this construction it will he obvious that the copper ring f, can, should it
become worn, be easily detached from the valve e by simply unscrewing the nuts g
and and be replaced by a new ring, thus avoiding the expense of renewing the
valve c which is necessary with such stop valves as hitherto made.
It will also be obvious that a valve having my improvements can be screwed
up more tightly than valves as ordinarily constructed and that the seat b, as it is
only slightly coned, is not so liable to collect or retain foreign matter as ordinary
valve seats which are more tapered, and which constantly require replacing or
regrinding.
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. In a stop valve the employment of a ring, preferably a seamless copper ring
to form the face of the valve, substantially as, and for the purpose, hereinbefore
described.
2. In a stop valve the employment in combination with a slightly coned valve
seat of a valve proper having removably secured to it a ring, preferably a seamless
copper ring, adapted to fit into the said seat, substantially as, and for the purpose,
hereinbefore described.
3. The improved stop valve hereinbefore described and illustrated in the
accompanying drawing.
0th T... 1907
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.