Improvements in Waste-Fittings for Sinks and the like.
Year: 1897

page_text: Date of Application, 18th Dec., 1897-Accepted, 12th Mar., 1898
COMPLETE SPECIFICATION.
Improvements in Waste-Fittings for Sinks and the like.
I, ALBERT ARTHUR RUSSELL, a citizen of the United States of America, located and
doing business at No. 328, Montgomery Street, in the City and County of San
Francisco, State of California, United States of America, Machinist, 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 :-
The object of my invention is to provide a combined cut-off and strainer
attachment for sinks, which shall be simple of construction, inexpensive and durable;
said attachment not only serving as a strainer to prevent excessive accumulation of
grease or other foreign matter passing into and clogging the waste pipe, but to cut
off or to permit the outflow of water from within the sink or basin into the said
waste pipe; the cut-off plate being so fitted to the strainer as to serve, when closed,
as a cover to prevent the escape of gas or foul odor from within the waste pipe into
the kitchen or room.
To comprehend the invention, reférence must be had to the accompanying sheet
of drawings, forming a part of this application; wherein-
Figure 1 is a broken vertical sectional view of an ordinary kitchen sink, showing
the strainer and cut-off attachment applied thereto;
Figure 2 is a top-plan view of the strainer plate removed from within the
sink;
Figure 3 is an enlarged top-plan view of the cut-off plate; and
Figure 4 is an edge view of the cut-off plate.
In the drawings, the letter A is used to indicate an ordinary sink, such as is in
common use in kitchens or similar places, and B the stand pipe or waste pipe for the
sink; which pipe is provided with the internal screw-threaded collar B¹, into which
screws the usual strainer plug D. These parts are of the usual construction—hence
require no particular description herein. The sink is usually provided with a
depressed portion at one end, Figure 1, and within this portion of the sink is fitted
the circular strainer plate or disk D¹; the outer edge of the rim e bearing firmly
against the wall of the countersunk portion of the sink. This circular strainer plate
or disk may be said to constitute an auxiliary strainer to the strainer plug D; and
said plate or disk is formed or cast with a central depressed or countersunk portion f
In the depressed portion of the strainer plate or disk D¹ is cut a series of radial
openings or slots g, through which the water from the sink makes its escape when
the cut-off is opened.
From the under face of the strainer disk D¹ downwardly extends the screw-threaded
stem ; the lower or free end of which stem screws into a threaded opening i¹ formed
in the strainer plug D, Figure 1, in order to secure the strainer disk or plate D¹ in
place. In certain class of sinks the downwardly-extending screw-threaded stein may
be omitted from the strainer plate or disk and said disk or plate be secured to the
bottom of the sink, over the waste pipe, by screwing the same directly thereto by

page_text: means of screws which pass through screw-openings or holes (not shown) formed through
the outer edge rim e of the strainer plate or disk. The form of connection between
the strainer plate or disk is dependent upon the style of sinks to which it is to be
attached. ⚫
To the upper face of the strainer plate or disk and within the depressed portion
thereof is snugly fitted the slide cut-off plate or disk C; which plate or disk is pivoted
centrally to the strainer plate or disk by means of the screw k, so as to be free to
slide or oscillate; which screw passes through an opening in the cut-off plate or
disk and enters a screw-threaded socket in the upper face of the strainer plate or
disk, as shown. While I prefer this style of connection between the parts, owing to its
simplicity, it is obvious that any other suitable form of connection may be made ;-
the only requirement being that the cut-off plate or disk shall be free to slide or
oscillate within the depressed portion of the strainer plate or disk.
The cut-off plate or disk C has a series of radial perforations, openings or slots gl
out therethrough which register, when the said plate or disk is turned to open the
outlet of the sink, with the radial openings of the strainer plate or disk D¹. This
cut-off plate is moved by pressing laterally upon the knob h¹; the stem of which
extends through the cut-off plate or disks and works in a segment slot h cut in the
strainer plate or disk D¹. When the cut-off plate or disk is turned to close the out-
flow of water from within the sink, the radial perforations, slots or openings thereof
will fall over the solid portions intermediate between the radial openings of the
strainer plate or disk. When thus closed, the sink may be filled with water for the
washing of dishes therein and the water be prevented from escaping. To discharge
the used water from the sink it is only necessary to move the oscillatory or slide
plate or disk until the radial openings thereof register with those of the strainer plate
or disk.
When the sink is not in use, the oscillatory or slide cut-off plate, by being turned
so as to close the radial outlet openings in the strainer plate or disk, will prevent the
gas escaping from the trap or sewer into the kitchen or room.
While the invention is simple and cheap in construction, it provides an efficient
device for controlling the escape of water from the sink and preventing the escape of
sewer gas or foul odors from the trap or sewer into the room when closed.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed, I declare that what I claim is :--
1. The combined cut-off and strainer for sinks herein shown and described.
2. A combined cut-off and strainer for sinks or similar receptacles, consisting of a
strainer plate or disk secured over the discharge opening of the sink, said disk or
plate having a series of radial outlet openings therein, and of an oscillatory or slide
cut-off disk or plate movably connected to the strainer plate or disk, said cut-off disk
or plate having a series of radial openings therein which register with the outlet
openings in the strainer disk or plate when the cut-off disk or plate is turned to draw
off the sink.
3. In a combined cut-off and strainer for sinks, the combination with a strainer plate
or disk secured over the discharge opening of the sink, said plate or disk provided
with a depressed central portion having radial outlet openings therein, and a cut-off
disk or plate movably fitted within the depressed portion of the strainer plate or disk,
said cut-off disk or plate having a series of radial openings therein which register
with those of the strainer plate or disk when the cut-off disk is turned to permit the
contents of the sink to be drawn off.
4. In a combined cut-off and strainer for sinks or similar receptacles, the combina-
tion with the strainer plate or disk provided with a series of radial outlet openings,
of a screw-threaded stem projecting from the under face of the strainer plate or disk
which engages with the discharge opening of the sink, and of a cut-off disk or plate
movably secured to the strainer plate or disk, said cut-off disk or plate being provided
with a series of radial openings which register with those of the strainer plate or disk

page_text: when the cut-off disk or plate is turned to permit the contents of the sink to be
drawn off.
Dated this 22nd day of November 1897.
ALBERT ARTHUR RUSSELL.
Boult & Wade,
Agents for the Applicant.