AN IMPROVED SLUICE VALVE
Year: 1884

page_text: We JOSEPH PAGE GOULSON and ADOLPH SPIEL, Engineers of N° 9 York Strasse
in the City of Berlin and German Empire do hereby declare the nature of our
Invention for "AN IMPROVED SLUICE VALVE" and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:―
Our Invention relates to improvements in slide valves with single or double
slides and double packing or bearing surfaces for gas, water and other service pipes
in which the slide rotates around a fixed centre or axis or two semicircular slides
rotate each on its own axis and are pressed so firmly onto each other that a tight
closure is attained.
The rotary motion of the said slide or slides is obtained by means of one or more
toothed sectors or segments into the toothing of which a spindle provided with
screw teeth at its lower end gears which said spindle is squared off at the opposite
end to receive a suitable key for operating the same. We are aware that slide
valves of various constructions have been employed but none of such said valves
could withstand high pressure, they were not reversable and were provided with
only one packing surface whereas our valves are reversable, can be used from the
one side as well as from the other, will withstand high pressure and offer an
absolute tight closure in consequence of the double packing or bearing surfaces.
Figure 1 is a vertical section of our single slide valve in opened position.
Figure 2 is a vertical section of Figure 1 with closed valve.
Figure 3 is a vertical section of our slide valve with the slide made of two parts
and in opened position, Figure 4 is a vertical section of Figure 3 with closed
valve wings
a is the valve casing (Fig. 1 and 2) in which a sectorial slide b is arranged to
turn around the pivot or axis c-The periphery of the sector or sectorial slide b is
provided with suitable teeth d which gear into the screw toothing f in the end of
the spindle e which said spindle is provided with a suitable stuffing box g so as to
prevent all leakage.
In order to attain a tight joint between the slide b and the casing even for high
pressure when the valve is closed we employ two carefully ground or planed
rings of brass, bronze or other suitable metal or alloy against which the
corresponding rings k k of the slide have their bearing when the spindle e is
rotated and the slide closes the valve.

page_text: The employment of these double bearing and packing surfaces enables our valve
to be used from both sides with like good result.
Figures 3 and 4 show a modification of the above named arrangement in which
two semicircular slides are employed instead of a single slide as represented in the
Fig. 1 and 2.
Our said double slide consists of the two semicircular wings which rotate on
the spindle c and are provided with a suitable row of teeth o, o' at their periphery
which gear with the screw f, inclined or other teeth formed on the lower end of
the spindle e-Or a suitable pinion can be attached to the lower end of the said
spindle e (Fig. 1 to 4).
By rotating the spindle e by means of a suitable key or its equivalent the
wings of the slide are separated or closed so tightly together that an absolutely
tight joint is formed whilst the metallic rings mm² of the said slide bear snugly
against the corresponding rings of the casing i i¹. In order to ensure a perfect
joint the wing of the slide is provided with a conically carefully ground or
otherwise treated projecting ledge n which fits into a corresponding recess n' in
the wing of the slide Instead of arranging the teeth of the slide on the side
of the periphery of the sector as shown they can be formed immediately in the
periphery itself so that the spindle e can be arranged horizontally instead of
vertically as shown in the Fig. 1 to 4-It is evident that our Invention can be
subjected to minor modifications without departing from the tenor of our
Invention.
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:-
1-The construction arrangement and application of a slide valve in the form of
a sector with double annular packing or bearing surfaces k k¹ and ii whereby the
slide is operated by means of the lateral toothing of the periphery of the said
sector b and a suitable screw f formed on or fixed to the end of a spindle e so as to
produce a perfectly tight joint in both directions substantially as described and
shown in Fig. 1 and 2 of the accompanying Drawings.
2. The construction arrangement and application of a two winged slide valve
with the double annular packing or bearing surfaces m m' and i¹ the projecting
ledge n and recess n¹ so that by operating the wings of the slide by means of
the screw spindle e for its equivalent and the toothed sectors o o¹ a perfectly
tight joint is attained whereby the said valve can be used from either side
substantially as described and shown in Figures 3 and 4 of the accompanying
Drawings.
3-The general construction arrangement and combination of the parts in our
improved slide valve substantially as described and shown in the accompanying
Drawings.
Dated th¦ 14.4te dos af Tal. 1991.
Dated this 14th day of July 1984.
JOSEPH PAGE GOULSON.
ADOLF SPIEL
Witnesses
EUGEN STUTZER.
ANTHONY STEFFEN.