Improvements in Traps for Water Basins.
Year: 1891

page_text: Date of Application, 31st Aug., 1891-Accepted, 31st Oct., 1891
COMPLETE SPECIFICATION.
Improvements in Traps for Water Basins.
I, HERBERT JOHN ALLISON of 52, Chancery Lane, London, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention which
has been communicated to me from abroad by Delehanty Manufacturing Company,
Incorporated, of Albany, New York, United States of America, and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
Figure 1 shows a vertical sectional view of my trap with the ball valve in its
normal position.
Figure 2 shows a vertical sectional view thereof, showing the ball valve in the
position it assumes when the trap is being flushed.
This invention relates to traps for sinks, and wash basins, and consists of a
chamber of any suitable configuration, having induction and eduction openings
and a ball valve to close and open the induction opening and a limiting device
to prevent the ball valve from rising too high and entering and choking the
eduction opening. As represented in the drawings the letter A, shows the
chamber of the trap, which is preferably globular in form and has an induction
preferably through the neck D, to which neck is to be attached the waste pipe
leading from the sink or basin. The ball valve B, is preferably composed of
hard rubber and has a guide pin F, dependent from it, and the ball valve when
in its normal position rests upon its seat which is preferably located at the
upper end of the neck D, as shown. Directly over the ball valve is located
the limiting pin C, which consists, preferably, of a pin bent at or near its
centre, and preferably has an elongated, threaded' head, and it is set in position
by entering the free end of the pin C, through the threaded opening in the wall
of the trap chamber and turning the pin into position with a screw driver, so
that the bent portion of the pin will assume the form of an inverted arch, the
inverted apex thereof lying over the center of the ball valve preferably. The
eduction neck E, is of sufficient diameter so that the ball valve B, may be
entered and' taken from the trap chamber through it.
This invention operates in the following manner: Water flowing into the trap
chamber through the induction neck D, raises the ball valve B, off its seat and
as it rises it comes in contact with the inverted apex of the bent pin C, and is
turned to one side and prevented from entering and choking the eduction opening
in neck E, and the guide stem F, assists in guiding the ball to its seat again
when the rush of the water through the trap ceases. Waste water from basins,
sinks, etc., always contains lint and stringy or fibrous matter which will wind
about and cling to any projection in the trap chamber unless such projection be
especially designed to prevent such a result, and the pin C, is so designed and
presents to all substances passing through the trap, upwardly inclined surfaces
upon which (the pin C, being preferably round) no fibrous or stringy substance
can permanently lodge, as, the upward motion of the water pushes all such
matter quickly along the inclined surfaces and out of the trap.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is :-
In a trap having a valve chamber and a rising and falling valve, a bent or curved
limiting device passing wholly or partly across the valve chamber and in configura-
tion forming substantially an inverted arch. that the use of the valve in the chamber

page_text: may be limited and the limiting device present an upwardly inclined surface to
substance passing into the induction pipes of the trap substantially as specified.
Dated this 31st day of August 1891.
ALLISON BROS.,
Agents for the Applicant.