Improvements in Traps for Closets, Urinals, Lavatory Basins, Ventilation Pipes, and the like.
Year: 1899

page_text: Date of Application, 20th Sept., 1899-Accepted, 4th Nov., 1899
COMPLETE SPECIFICATION.
Improvements in Traps for Closets, Urinals, Lavatory Basins,
Ventilation Pipes, and the like.
We, MARK WILLIAM HOUSEHOLD, Engineer Commercial, of 67, Lorrimore
Road, Lorrimore Square, Newington, and PETER THOMAS ARDLEY, of 6A, Stofford
Road, Walworth, Plumber, both of London, S.E., 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:-
-
This invention relates to certain improvements in traps for closets, urinals,
lavatory basins ventilation pipes and the like for preventing syphonage in drains
and soil pipes, lavatories, urinals and so forth.
This invention also relates more particularly to details of fittings upon applica-
tion of the subject matter of invention comprised in the Specification of prior
Letters Patent to one of the present applicants, the said Peter Thomas Ardley
dated 17th day of January, A.D., 1895, and numbered 1141, of that year.
The valves in their construction and application as will hereinafter appear are
also employed as air traps, that is, as traps or shields for ventilation pipes where
fresh air is required to be drawn in, from time to time, but foul air or gases will
be prevented from escaping.
In order that this invention may be well understood and be carried into prac-
tice there is hereunto annexed a sheet of drawings and the same will be referred
to in the following more particular description by Figures and letters, like letters
referring to similar parts throughout.
In Fig. 1 is shown in vertical cross section, a fitting according to this inven-
tion with the mouth of the syphon pipe D, brazed, sweated or otherwise fitted
into the screw threaded union piece a; b, is a correspondingly screw threaded
mouth piece which serves as a valve seating at c, and support for the centrally
pierced bridge guide d. Through this guide bridge piercing is passed, free to
rise and fall, the stem e, of the valve f, of concave form in this case, fitting
to the dished seating c. The upper end of the stem e, is fitted with an inverted
cap or hollow dome or plate g.
These valves are made of aluminium metal as they can be spun up to almost
any degree of lightness and are not corrodible.
The hollow dome or plate g, is in similar manner shown applied to the stem e,
of valve f, in Fig. 2, but as shown in Figs. 3 and 4, the stem is not so fitted but
might so be for like purposes, that is to say, to balance the stem evenly, and to
act similarly to a parachute, when the valve lifts for admission of air and again
returns to its normal position, after the flush of matter down the soil pipe has
taken place.
Fig. 1, illustrates such an application to the crown or top of the trap of a
soil pipe, leading from a w.c. basin, or it might be from a sink or elsewhere as
will be well understood.
As shown in Fig. 2, the fitting is varied by the use of a convex form of the
valve f, and the internal seating therefor is correspondingly made.
In the modification shown in Fig. 3, the valve f, is of a convex form, the inside

page_text: of the mouth of the syphon tube is screw threaded at c¹, the valve seating c is
made with the flanged mouth ring b, screw threaded at 6', correspondingly, and
the guide bridge d, for the valve stem e, is either sweated in or pinned or other-
wise fitted in position as indicated at d¹.
In Fig. 4, the mouth piece b, is combined with the valve seating e, and also
with supporting rim or shoulders ², for carrying the guide bridge d, as shown.
In this case there is but one fitting at b, c, to the syphon tube mouth.
Fig. 5, illustrates the fitting of these traps and valves in hanging instead of
horizontal form.
The valve may be either concave or convex as before described with seatings
correspondingly provided.
Fig. 6, shows in like view to Fig. 5, the hanging valve of convex form but
the line of the said valve seating is inclined to the perpendicular so that the
closing of the valve f, on its seating c will be secured by its own weight.
In
In Fig. 5 which is a plan of the valve represented in Fig. 5, there is shown
suspension means for vibration of the valve f, the same consisting of a rolled
finger plate h, with the corresponding portion i, attached to the valve f.
Fig. 7, there is provided the suspension piece h, but this is rolled over to form
portion of a butt or hinge.
A loose pin with rounded ends may be used with this fitting shown in Figs. 5,
54, and 6 to provide against side play of the valve.
The piece i, on the valve is provided with a correspondingly rolled hinge piece,
pinned or hung on the suspension piece h, so that the vibration of the valve
may be very sensitively adjusted as it will hang perfectly against its seating.
In this case the valve may have fitted thereto a light spring k, provided to
assist and assure its bearing against its seating when in normal closed position.
For this purpose we have found experimentally, that aluminium finger
springs k, (one or more) fitted as shown, and with their free ends bearing on the
back of the valve disc f, effectual, and intend to claim such valves so fitted and
of aluminium as described.
It may be well understood that valves so fitted may be of other material than
aluminium.
These traps and valves may be employed in substitution of the well known and
defective mica valve traps for ventilation pipes and so forth. m, indicates .a grid
or cover for same.
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 :-
The improvements in traps for closets, urinals, lavatory basins, ventilation
pipes and the like, constructed combined, and operating as and for the purpose
herein described in reference to and shown by the respective figures of the
drawings.
Dated LIIS ZULH day of September 18000
Dated
this ZULH day oft Sentember 1800
WALTER A. BARLOW,
Consulting Engineer & Patent Expert,
306, High Holborn, London, W.C., for the Applicants.