Improvements in Valves.
Year: 1892

page_text: Date of Application, 26th Feb., 1892-Accepted, 2nd Apr., 1892
COMPLETE DI BUIFICATION.
Improvements in Valves.
I, WILHELM ENGST of Brüx, Bohemia, in the Empire of Austro-Hungary,
Manager of Sugar-works, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
scertained in and by the following statement:-
Hitherto in the construction of cut-off valves no provision has been made to
compensate for the rapid wear both of the seat of the valve and of the valve itself,
resulting from the frequent compression of the respective contact surfaces of the
two parts.
The object of this invention is to increase the durability of the valve at least
twofold by the improved construction herein described and shown in the accom-
panying drawings in which
Fig. 1 is an elevation and Fig. 2 a vertical section of the improved valve.
Fig. 3 is an elevation of the valve-seat with a portion of the valve fitted to it.
Fig. 4 is a cross section of Figure 3.
Fig. 5 shows the open valve in sectional elevation.
Into the socket or boss a of the valve-case A is tightly screwed a guiding nut >>
through which passes the screw-spindle c of the valve. At the end of this spindle
is a cap d terminating in or provided with a screw-bolt e and fixed in position by
means of the cross-pin z. Upon the screw-bolt e are passed the valve and the
guide-wings, the whole being firmly secured together by means of the nut h.
The valve when closed tightly bears on the contact surface of the valve-seat ; in the
centre of the valve-case and closes the port or passage j. When however the screw-
spindle c is screwed back by means of the hand-wheel t, the valve recedes in the
direction of the arrow and thus opens the passage j. When the valve f is worn on
the side I turned towards the valve-seat, the guide-nut is unscrewed, the screw-
spindle c along with the ring is removed and the nut h loosened. Upon removing
It is then turned over
the guide-wings g the valve f itself may then be removed.
and re-inserted in its place in an inverted position, so that it now bears upon the
scat with the surface 2. When this valve is worn out on both sides it can be
replaced by another similar ring kept in readiness for the purpose, while all the
other parts remain in use as before.
When the valve-seat in its turn becomes worn out on one side (3), the plug i
and guide-nut are removed and interchanged in such a manner that the plug lis
placed in the socket or boss a and the guide nut in the socket or boss k the valve-
case being at the same time turned 180°..
The reversible valve f and the valve-seat are preferably made of strong and
durable metal such as steel, while the other parts may be made as usual of gun-
metal, brass or equivalent.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is,
1. A reversible valve in which the valve-spindle c carries a cap or case such as d
having a screw bolt e integral with it upon which bolt is passed the reversible and
interchangeable valve which is supported in place by means of guide wings g and
nut in such a manner that when this nut is unscrewed and the guide-wings are
removed the valve may be inverted while the valve-seat i may be similarly
inverted so as to present another contact surface to the valve by interchanging
the plug and guide nut within the sockets or bosses u and k respectively of the

page_text: valve-case A substantially as described and illustrated in the accompanying
drawings.
2. A reversible valve such as substantially as described and illustrated in the
accompanying drawings.
3. A reversible valve seat such as i substantially as described and illustrated in
the accompanying drawings.
4. The combination with a valve such as of separate webs or wings such as g
capable of being removed from the valve but ordinarily moving with it substantially
as described and illustrated in the accompanying drawings.
5. The combination with a reversible valve such as f and separate webs or wings
such as g of a reversible valve-seat such as i substantially as and for the purpose
described and illustrated in the accompanying drawings.
Dated this 26th day of February 1892.
W. P. THOMPSON & BOULT,
Agents for the Applicant.