An Improved Automatic Sluice Valve, especially adapted for use in House Drainage.
Year: 1897

page_text: Date of Application, 29th July, 1897
Complete Specification Left, 29th Apr., 1898--Accepted, 23rd July, 1898
PROVISIONAL SPECIFICATION.
An Improved Automatic Sluice Valve, especially adapted for use in
House Drainage.
I, CARL HEINRICH WILHELM LUDWIG MAHLER, of Hamburg, in the Empire
of Germany, Mechanical Engineer, do hereby declare the nature of this invention
to be as follows;-
-
The case of the improved valve mainly consists of a T-shaped tube, the hori-
zontal arm of which serves for the passage of water, while its vertical arm receives
the cut-off slide or door when the water, normally,-say in the case of the waste-
pipe of a dwelling house,-flows off to the drain or sewer.
The cut-off valve or slide is supported by a rod which passes through the upper
wall of the vertical branch being packed with damp-proof packing at the joint,
and carries a dog or pawl at the top, resting upon the nose of another pawl or
arresting lever, when it is desired to retain the valve or door in the raised position.
This lever is adapted to turn on a pivot provided on the standard which is
erected upon the arm or branch of the pipe; while its lower end rests against one
end of a double-armed lever which is likewise pivoted to the standard and
weighted at its opposite end with a float, which hangs within a dome placed upon
the horizontal branch or arm of the pipe.
Whilst the water flows through the horizontal branch as it normally should do,
the sliding door is retained in its upper position by the combination of pawls
above described; but when the water, say, in consequence of floods, or at high
water generally, exercises a powerful back-pressure so that it forces its way
through the said horizontal pipe in the opposite direction and begins to rise in
the waste pipe of the house, it will enter the dome, raise the float and release
the double armed lever from the arresting lever. This lever, then, being weighted
as it is by the slide will swing upwardly and the slide will in consequence descend
within the horizontal arm of the pipe and thereby cut off the current of water
flowing in the wrong direction; by which means muddy water from the streets
is effectually prevented from flooding dwelling houses.
In order to prevent the sliding valve or door from closing except when required,
the annular groove of the horizontal arm of the pipe, which receives the said
slide or door, is made wedge-shaped on one side, and the said slide is provided
with a roller on that side which is facing the inclined wall of the guide groove.
The said roller, as the slide descends, itself slides down along the incline of the
groove and forces the slide into contact with the other groove surface, with which
the slide will accordingly form an air tight joint. The slide, therefore, does not,
immediately as it descends from its upper position, get between two guiding
surfaces, between which it would have to slide further down with a considerable
amount of mutual friction, while its downward progress might even be inter-
rupted altogether by external resistances, such as may arise from foreign bodies
finding their way into the guide-groove. What happens here is that the said
slide first drops freely into the horizontal arm of the pipe; then but slight fric-

page_text: tion takes place between the rotating roller and the inclined surface of the guide
groove, and not until it reaches the end of its downward movement, does the slide
come into contact with the other surface of the guide groove. A transverse
partition provided in the vertical branch of the pipe may serve to guide the slide
within that branch.
In order to keep foreign bodies out of the horizontal pipe and more especially
out of the guide groove wherein the slide is to work, or to expel them if they
should happen to have introduced themselves, say, during the shifting or inser-
tion of the valve in the pipe,--such foreign bodies being, for example, pieces
of the material used in packing the pipe joints (loam, oakum etc.), one arm
of the horizontal pipe,that, for example, which carries the dome is divided
longitudinally, and the valve is first inserted into the pipe and secured therein,
whilst one half of such pipe, is off. Then, the interior of the pipe may be
inspected, since it is open at the top, and after any foreign bodies that may have
found their way into it have been removed, the other half of the pipe may be
put in its place. The two portions of the pipe may be conveniently joined
together by means of a tongue-and-groove joint, suitably cemented over.
This division of the pipe into halves is furthermore of great advantage because
it very materially facilitates the insertion of the valve into existing pipe cisterns,
seeing that such insertion may take place whilst one half of the pipe is wanting,
so that the tail-end of the main branch may be fitted in one end of the connecting
sleeve of a pipe previously laid down; passing then one half of the sleeve of the
pipe over the other pipe end, and finally closing the joints tightly and placing
the other half of the pipe, on the top.
Date :
1
TI
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.
An Improved Automatic Sluice Valve, especially adapted for use in
House Drainage.
I, CARL HEINRICH WILHELM LUDWIG MAHLER, of No. 30, Messberg, in the
City of Hamburg, in the Empire of Germany, Mechanical Engineer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:—
The present invention relates to an improved automatic sluice valve especially
adapted for use in house drainage, the object being to produce a valve which is
exceedingly simple in construction and absolutely reliable and efficient in use;
and with this end in view my invention consists in certain novel features of
construction and combinations of parts, as will be hereinafter fully described
with reference to the accompanying drawing in which-
Figure 1 is a vertical longitudinal section of the improved sluice valve; and
Figures 2 and 3 are cross sections on the lines 2-2 and 3-3 respectively.
The case of the improved valve mainly consists of a T-shaped tube, the hori-
zontal arm a of which serves for the passage of water, while its vertical arm b
receives the cut-off slide or door c when the water, normally, say in the case
of the waste-pipe of a dwelling house,-flows off to the drain or sewer, as indi-
cated by the arrow.

page_text: The cut-off valve or slide c is supported by a rod c¹ which passes through the
upper wall of the vertical branch 6 being packed with damp-proof packing at the
joint, and carries a dog or pawl d at the top, resting upon the nose of another
pawl or arresting lever , when it is desired to retain the valve or door c in
the raised position. This lever d' is adapted to turn on a pivot provided on the
standard b which is formed upon the arm or branch of the pipe; while its
lower end rests against one end of a double-armed lever d³ which is likewise
pivoted to the standard b¹ and weighted at its opposite end with a float e, which
hangs within a dome upon the horizontal branch or arm a of the pipe.
Whilst the water flows through the horizontal branch a in the direction of
the arrow as it normally should do, the sliding door is retained in its upper
position by the combination of pawls above described, (see Figure 1); but when
the water, say, in consequence of floods, or at high water generally, exercises a
powerful back-pressure so that it forces its way through the said horizontal
pipe a in the opposite direction and begins to rise in the waste pipe of the house,
it will enter the dome a¹, raise the float e and release the double armed lever d
from the arresting lever . This lever, then, being weighted as it is by the
slide c will swing upwardly in the position shown by dotted lines in Figure 1 and
the slide c will in consequence descend within the horizontal arm a of the pipe
(Figure 3) and thereby cut off the current of water flowing in the wrong direc-
tion; by which means muddy water from the streets is effectually prevented from
flooding dwelling houses.
In order to secure a reliable closing of the sliding valve or door c the annular
groove of the horizontal arm a of the pipe, which receives the said slide or door,
is made wedge-shaped on one side, and the slide c is provided with a roller c³
on that side which is facing the inclined wall of the guide groove. As the slide
descends the roller c², itself slides down along the incline of the groove and forces
the slide into contact with the other groove surface, with which the slide will
accordingly form a reliable tight joint. The slide, therefore, does not, imme-
diately as it descends from its upper position, get between two guiding surfaces,
between which it would have to slide further down with a considerable amount
of mutual friction, while its downward progress might even be interrupted alto-
gether by external resistances, such as may arise from foreign bodies finding their
way into the guide-groove. In the present case however the said slide first
drops freely into the horizontal arm of the pipe; then but slight friction takes
place between the rotating roller and the inclined surface of the guide groove,
and not until it reaches the end of its downward movement, does the slide come
into contact with the outer surface of the guide groove. A transverse parti-
tion provided in the vertical branch of the pipe may serve to guide the slide
within that branch.
In order to keep foreign bodies out of the horizontal pipe a and more especially
out of the guide groove wherein the slide is to work, or to expel them if they
should happen to have introduced themselves, say, during the shifting or insertion
of the valve in the pipe, such foreign bodies being, for example,, pieces of the
material used in packing the pipe joints (loam, oakum or the like,)-one arm
of the horizontal pipe, that, for example which carries the dome ¹ is divided
longitudinally, and the valve is first inserted into the pipe and secured therein,
whilst the upper half of such pipe, is off. Then, the interior of the pipe may
be inspected, since it is open at the top, and after any foreign bodies that may have
found their way into it have been removed, the said half of the pipe may
be put in its place. The two portions of the pipe may be conveniently joined
together by means of a tongue-and-groove joint, suitably cemented over.
This division of the pipe into halves is furthermore of great advantage because
it very materially facilitates the insertion of the valve into existing pipe systems,
seeing that such insertion may take place whilst one half of the pipe is wanting,
so that the tail-end of the main branch may be fitted in one end of the connecting
sleeve of a pipe previously laid down; passing then one half of the sleeve of the

page_text: pipe over the other pipe end, and finally closing the joints tightly and placing
the other half of the pipe, on the top.
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:-
1. An automatic sluice valve especially adapted for use in house drainage,
characterized by the feature that a suitable slide or door (c) which is normally
retained in its upper or opened position by arresting pawls or levers (dd) and
is released in case of back water by a float (e) acting upon the said arresting
levers, is guided by means of a roller (c) into a wedge-shaped guide groove of
the water passage (a), substantially as and for the purpose set forth.
2. In an automatic. sluice valve such as referred to in Claim 1 the partial
longitudinal division of the horizontal water pipe, (a) into halves for the purpose,
of facilitating the insertion of the sluice valve into existing pipe conduits and to
enable an inspection and cleaning of the interior during the mounting of the
sluice valve, substantially as specified.
3. The improved automatic sluice valve for closing water passages in case of
back flow, constructed arranged and operating substantially as hereinbefore
described with reference to the drawing.
1
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.