Improvements in and relating to Lavatory Basins.
Year: 1888

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[Communicated from abroad by THOMAS CHARLES BOYD and JAMES JOSEPH WAde,
both of Chicago, Illinois, United States of America, Plumbers.]
Improvements in and relating to Lavatory Basins.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake and Co., Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
In stationary wash-bowls, as heretofore constructed, the overflow duct has been
moulded or formed upon the outside of the bowl and connected directly with. the
waste-pipe and a permanent, rigid strainer formed in the bowl, which has rendered it
impossible to clean the duct and remove the impurities which are constantly
accumulating therein.
The object of this invention is to construct a bowl and trap preferably in one piece
and in such a way that all the parts thereof may be cleaned and purified when necessary
by persons of ordinary skill. This object is accomplished in the manner hereinafter
more particularly described.
In the accompanying drawing
Figure 1 is a vertical sectional view of the improved bowl, through the trap and
overflow duct.
Figure 2 is a like view, showing a modified construction.
Figure 3 is a like sectional view in detail, of a portion of a bowl, showing a stili
further modification.
Figure 4, is a face view in detail of the hinged strainer at the mouth of the over-
flow, and
Figure 5, is a rear detail view of a portion of the same.
Like letters of reference indicate like parts in the different Figures.
A, in the drawing, represents a wash-bowl, preferably made of porcelain, upon one
side of which is formed an over-flow-duct B, communicating at the top with an
opening C, Figures 1 and 2, which is preferably protected by means of a hinged
strainer D, as hereinafter more fully described. E is an elongated waste outlet which
Pains R

page_text: is formed integral with the bowl; and the overflow duct B is arranged to communicate
therewith. In making the said connection, the duct B is caused to diverge from the
bowl as it approaches the said waste outlet, thereby leaving a web B', between the
two, and the bottom and lower end B2, Figure 2, of the duct is carried downwardly
at a sharper curve than its top, for the purposes hereinafter specified.
Opposite the duct B in the pipe E, is preferably formed a short pipe or neck F,
which is normally closed by means of a plug f. Figure 2, retained in position by
means of a screw clamp f¹, secured to a flange f upon the said pipe. An opening in
the lower end of the pipe E is normally closed in like manner by means of a plug e,
and clamp el, attached to flanges e³.
Communicating with the pipe E at or near its lower end, is a pipe G, which is
curved upwardly to conform to the curve of the part B', whence it is preferably
arranged horizontally as shown in Figure 1, or downwardly, as indicated in dotted lines
in the said Figure. B. Figure 1, is a web formed between the part B and pipe G to
strengthen the latter. G¹ is a short pipe formed upon the top of the pipe G to which
a vent pipe may be attached to prevent siphonage. The waste pipe may be attached
in like manner to the pipe G.
It will be seen that the joining of the pipes E and G in the manner shown, in
conjunction with the part B³, serves to form a trap between the waste pipe and bowl;
while, by means of the pipe F and the opening in the lower end of the pipe E, a
swab H Figure 1 may be inserted, and all the impurities in the interior of the overflow
ducts and trap may be removed.
To effect this result, and to permit the swab to be drawn through the duct, we
prefer to hinge the strainer D to the opening C as follows: D₁ is a metal plate which
is secured within a suitable recess within the bowl by means of bent hooks d, d, which,
when the plate is inserted in position, are turned by means of a screw-driver, to clasp
the walls of the bowl A. The strainer D, being hinged to the plate D¹, is normally
closed by means of a spring d¹ Figure 4, and may be opened at any time to introduce
the swab.
In the modification shown in Figure 2, a valve-seat ³, is formed in the pipe E
beneath which, in said pipe, may be inserted a ball or float-valve e.
It is obvious that the lower end of the pipe E may be made detachable from the
other portion without varying the essential features of my invention. Such a con-
struction is shown in Figure 3, in which the lower part is connected by means of a
"union" joint es, or any suitable coupling. The duct B may also extend out to the
top of the bowl as shown in Figure 2, in which event it may be closed by any con-
venient form of cap or plug b.
In Figure 3 is shown a still further modification, to enable a metal plug to be used
for the bowl. Instead of forming the usual plug opening of the diameter of the
pipe E, we enlarge said opening and form an annular flange J, thereon. The annular
space between said flange and the surrounding portion is filled with cement; and a
metal thimble K inserted therein, which is provided with projections at the bottom to
enable it to receive and support a removable strainer k. This construction provides a
smooth plug-opening not subject to injury from a metal plug, while it permits the
whole of the pipe E to be easily cleaned.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed as communicated to me by my
foreign correspondents I declare that what I claim is :
First. The combination with a wash-bowl, of the depending pipe E, having an
opening at the bottom closed by a removable cap, upwardly curved pipe G com-
municating therewith at or near the bottom, overflow duct B extending from, at or
near the top of the bowl, downwardly to connect with the pipe E substantially as
shown and described.
Second. The combination with a wash-bowl of the depending pipe E, having
openings at the bottom and side respectively, each closed by removable caps, upwardly,
curved pipe G communicating therewith at or near the bottom, overflow duct B

page_text: extending from an opening communicating with the top of the bowl, downwardly to
a point opposite the opening in the top of the pipe E, and the depending part B³, said
bowl, pipes and duct being integral with each other and constructed and arranged
substantially as shown and described.
Third. The combination of the bowl A, pipes E and G and duct B, integral with
each other, a capped opening upon the side of the pipe E opposite the mouth of the
duct, a capped opening at the bottom of the said pipe, vent G¹, part B' and hinged
strainer D, substantially as shown and described.
Fourth. In a wash-bowl, the annular metal thimble K, substantially as shown and
described.
Fifth. In a wash-bowl, the overflow duct B, accessible for cleaning from its
respective ends, substantially as shown and set forth.
Doted this 97th dow of Mash 1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.