Improvements in Automatic Traps for Waste Pipes.
Year: 1892

page_text: Date of Application, 9th Dec., 1892
Complete Specification Left, 4th Mar., 1893—Accepted, 8th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Automatic Traps for Waste Pipes.
1, THOMAS JOSEPH BROGAN, of 474 Main Street, Paterson, County of Passaic
and State of New Jersey, U.S.A., Plumber, do hereby declare the nature of this
Invention to be as follows:-
The object of this invention is to provide an automatic trap for water pipes-in
connection with sinks etc.; simple and durable in construction and reliable in
operation.
The invention consists in the improved automatic trap for water pipes, and the
combination and arrangements of the various parts thereof, substantially as will be
hereinafter more fully described and finally embodied in the clauses of the claims.
Referring to the accompanying drawings, in which like letters of reference
indicate corresponding parts in the two figures:
Figure 1. is an elevation, and
Fig. 2. a vertical central section, of my improved trap.
In said drawings a represents the shell or body of the trap, to which is removably
secured a top or cover b.
At the bottom of the shell is arranged an opening, which is provided with a
removable plug f. The pipe c connects the interior of said shell with the sink, and
the pipe d acts as a vent in the usual manner.
The sewer connecting pipe e extends upwards into the shell a, and is provided at
its top with a diaphragm i made of rubber or other suitable material, secured to a
cylindrical tube or receptacle g, by means of cap h. To the centre of the rubber
diaphragm is secured a weight k, adapted to hold said diaphragm and its receptacle
in normal position.
In operation, when water enters the shell a through pipe c, the air in said shell
is expelled through vent d, and the receptacle g is raised simultaneously, and floats
by the buoyancy of the air contained therein. The pipe e is thus opened and the
water allowed to escape through said pipe into the sewer. A certain amount of
water will remain in the shell a (to about the same level as the top of outlet
pipe e), whereby the lower portion of receptacle g is submerged, thus preventing
the escape of any gas from the sewer.
By my improved trap, the chance of syphoning (by the sewer) is reduced to a
minimum, as the rubber diaphragm will close the top of the outlet pipe e; moreover
should the water in the shell a evaporate, the weight of the receptacle g together
with the weight k, will hold the diaphragm in closed contact with the pipe e, thus
thoroughly preventing any escapement of gas from the sewer.
Should it be found desirable to repair the receptacle or diaphragm, the cover b
can be easily removed, the receptacle extracted and the necessary repairs effected.
If any sediment should accumulate in the bottom of the shell a the plug f may be
removed, and said sediment extracted.
I do not intend to limit myself to the construction shown and described, as
various alterations can be made without changing the scope of my invention.
Dated this 9th day of December 1892.
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Automatic Traps for Waste Pipes.
I, THOMAS JOSEPH BROGAN, of 474 Main Street, Paterson, County of Passaic
and State of New Jersey, U.S.A., Plumber, do hereby declare the nature of my
invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The object of this invention is to provide an automatic trap for water pipes-in
connection with sinks etc.; simple and durable in construction and reliable in
operation.
The invention consists in the improved automatic trap for water pipes, and
the combination and arrangements of the various parts thereof, substantially as
will be hereinafter more fully described and finally embodied in the clauses of the
claims.
Referring to the drawings filed with the Provisional Specification, in which like
letters of reference indicate corresponding parts in the two figures:
Figure 1. is an elevation, and
Fig. 2. a vertical central section of my improved trap.
In said drawings a represents the shell or body of the trap, to which is
removably secured a top or cover b.
At the bottom of the shell is arranged an opening, which is provided with a
removable plug.f. The pipe c connects the interior of said shell with the sink, and
the pipe d acts as a vent in the usual manner.
The sewer connecting pipe e extends upwards into the shell a, and is provided at
its top with a diaphragm i made of rubber or other suitable material, secured to a
cylindrical tube or receptacle g, by means of cap h. To the centre of the rubber
diaphragm is secured a weight k, adapted to hold said diaphragm and its receptacle
in normal position.
In operation, when water enters the shell a through pipe c, the air in said shell
is expelled through vent d, and the receptacle 9 is raised simultaneously, and floats
by the buoyancy of the air contained therein. The pipe e is thus opened and the
water allowed to escape through said pipe into the sewer. A certain amount of
water will remain in the shell a (to about the same level as the top of outlet pipe e),
whereby the lower portion of receptacle g is submerged, thus preventing the escape
of any gas from the sewer.
By my improved trap, the chance of syphoning (by the sewer) is reduced to a
minimum, as the rubber diaphragm will close the top of the outlet pipe e; more-
over should the water in the shell a evaporate, the weight of the receptacle g
together with the weight k, will hold the diaphragm in close contact with the pipe e,
thus thoroughly preventing any escapement of gas from the sewer.
Should it be found desirable to repair the receptacle or diaphragm, the cover b
can be easily removed, the receptacle extracted and the necessary repairs effected.
If any sediment should accumulate in the bottom of the shell a the plug f may be
removed, and said sediment extracted.
I do not intend to limit myself to the construction shown and described, as
various alterations can be made without changing the scope of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim, is:
1 In a trap for water pipes, the combination with the shell and outlet pipe, of a
cylindrical tube arranged around said outlet pipe and within the shell, a diaphragm
arranged on the top of said cylindrical tube and adapted to rest, when in normal
position on the top of said outlet pipe, and a removable cover securely fastening

page_text: said diaphragm to the said cylindrical tube, all said parts, substantially as described
and for the purposes set forth.
2-In a trap for water pipes, the combination with the body, its top, the inlet
and the outlet pipe, of a cylindrical tube surrounding the upper portion of the
outlet pipe, a diaphragm arranged on the top of said cylindrical tube and adapted to
rest, when in normal position, on the top of said outlet pipe, and a weight
depending from the centre of said diaphragm and adapted to control the latter and
the cylindrical tube, all said parts, substantially as described and for the purposes
set forth.
1 1000
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.