AN IMPROVED TRAP, APPLICABLE TO URINAL PANS, WASH-BASONS, BATHS, AND OTHER LIKE VESSELS IN WHICH WATER OR LIQUID IS REQUIRED TO BE KEPT AT A DESIRED LEVEL DURING CONSTANT OR INTERMITTENT SUPPLY, THE TRAP PERMITTING AN AUTOMATIC FLUSHING AND EMPTYING WHEN THE PAN IS OVERCHARGED
Year: 1879

page_text: LETTERS PATENT to Robert Williams Armstrong, of The Potteries, Belleek, in
the County of Fermanagh, Ireland, for the Invention of "AN IMPROVED TRAP,
APPLICABLE TO URINAL PANS, WASH-BASONS, BATHS, AND OTHER LIKE
VESSELS IN WHICH WATER OR LIQUID IS REQUIRED TO BE KEPT AT A
DESIRED LEVEL DURING CONSTANT OR INTERMITTENT SUPPLY, THE TRAP
PERMITTING AN AUTOMATIC FLUSHING AND EMPTYING WHEN THE PAN IS
OVERCHARGED.”
"
PROVISIONAL SPECIFICATION left by the said Robert Williams Armstrong
at the Office of the Commissioners of Patents on the 11th September 1879.
ROBERT WILLIAMS ARMSTRONG, of The Potteries, Belleek, in the County of
Fermanagh, Ireland. "AN IMPROVED TRAP, APPLICABLE TO URINAL PANS,
WASH-BASONS, BATHS, AND OTHER LIKE VESSELS IN WHICH WATER OR LIQUID
IS REQUIRED TO BE KEPT AT A DESIRED LEVEL DURING CONSTANT OR INTER-
MITTENT SUPPLY, THE TRAP PERMITTING AN AUTOMATIC FLUSHING AND EMPTYING
WHEN THE PAN IS OVERCHARGED."
The object of this Invention is the construction of a trap applicable to urinal
paris and the like in which liquid is desired to be kept at a fixed level in such a
manner that an overflow is maintained at all times and an automatic flushing or
emptying of the contents of the pan is produced or "sett up " in case of an accidental
excess from the supply service or at the will of any person by increasing the supply
without interfering with the action of the pan as a receiver.
My Invention consists in forming a slit or opening at the bottom of a cap pro-
jection extending from the back wall of, say, an urinal pan behind, and at a distance
from which is a vertical partition as to form a passage up between them, the beight
of the partition limiting the height to which water may be kept in the pan. The
partition is also arranged at a distance from the back wall of the pan that the water
which flows over the top edge of the partition may pass down a back passage into
the waste nozzle.
I make the slit or aperture at the bottom of the cap projection of smaller section
than either of the passages that any substance getting into the pan and passing

page_text: through the slit may flow over the partition if of a buoyant character, or be forced
over it by the rush of water in the flushing operation if of a non buoyant character.
In the construction of urinals and the like from pottery ware the cap projection
and the partition would preferably be made by moulding or when shaping the
article as to be part of same, but the back wall and the partition may be of the
same material and the cap projection of a separate piece or of metal, screwed or
otherwise secured in place. The same may be the case should the pan be of metal,
or the pan with the partition and cap projection as part thereof may be in one
casting.
The Invention as described above is applicable to any vessel (by modifying the
shape of the pan) in which an automatic emptying or a flushing is essential should
the inflow rise above a fixed level, or, as in the time of frost, it should be desirable
to empty the pan.
In some cases the trap in a complete form can be affixed to existing urinal and
other pans, to sinks, to wash-basons, and other like vessels.

page_text: SPECIFICATION in pursuance of the conditions, of the Letters Patent filed by
the said Robert Williams Armstrong in the Great Seal Patent Office on the
10th March 1880.
"
ROBERT WILLIAMS ARMSTRONG, of The Potteries, Belleek, in the County of
Fermanagh, Ireland. AN IMPROVED TRAP, APPLICABLE TO URINAL PANS, WASH-
BASONS, BATHS, AND OTHER LIKE VESSELS IN WHICH WATER OR LIQUID IS
REQUIRED TO BE KEPT AT A DESIRED LEVEL DURING CONSTANT OR INTERMITTENT
SUPPLY, THE TRAP PERMITTING, AN, AUTOMATIC FLUSHING, AND EMPTYING WHEN
THE PAN IS OVERCHARGED.".
The object of this Invention is the construction of a trap (applicable to urinal
pans and the like in which liquid or liquids is or are desired to be kept at a fixed
level) in such a manner that an overflow is maintained at all times, and an auto-
matic flushing or emptying of the contents of the pan or vessel is produced or "set
up" in case of an accidental excess from the supply service, or at the will of any
person, by increasing the supply without interfering with the action of the pan or
vessel as a receiver.
And my Invention consists in forming slits or openings at the bottom of a cap
projection extending from the back wall of, say, a urinal pan behind, and at a
distance from which is a vertical partition forming a passage up between, the
beight of the partition limiting the height to which water may be kept in the
vessel. The partition or chamber is also arranged at a distance from the back of
the pan or vessel that the water which flows over the top edge of the partition may
pass down a back passage into the waste nozzle.
I make the slits or apertures at the bottom of the cap projection of smaller
section than either of the passages, that any substance getting into the pan or vessel
and passing through the slits may flow over the partition if of a buoyant character,
or be forced over it by the rush of liquid or liquids in the flushing operation if of
a non-buoyant character.
In the construction of urinals and the like from pottery ware the cap projection
and the partition would preferably be made by moulding or when shaping the
article as to be part of same, but the back wall and the partition may be of the
same material, and the cap projection of a separate piece or of metal, screwed or
otherwise secured in place.
The same may be the case should the pan be of metal, or the pan with the par-
tition and cap projection as part thereof may be in one casting.
The Invention as described above is applicable to any vessel (by modifying the
shape of the pan) in which an automatic emptying or a flushing is essential should-
the inflow rise above a fixed level, or, as in time of frost, it should be desirable to
empty the pan.
In some cases the trap in a complete form can be affixed to existing urinal and
other pans, to sinks, to wash-basons, and other like vessels.
The Drawing shows by sectional view my Invention as applied to a urinal. A,
the pan; B, cap or projection; C, partition; D, outlet; E, slits or openings.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed or put in practice, I
hereby declare that I claim the Invention of "An Improved Trap, applicable to
Urinal Pans, Wash Basons, Baths, and other like Vessels in which Water or Liquid
is required to be Kept at a Desired Level during Constant or Intermittent Supply,

page_text: the Trap Permitting an Automatic Flushing and Emptying when the Pan is Over-
charged," substantially as herein before set forth and described.
In witness whereof, I, the said Robert Williams Armstrong, have hereunto
set my hand, and seal, this Sixth day of March, in the. year of our Lord
One thousand eight hundred and eighty..
Witness,
JAMES AIKEN,
.
Belleek,
Co. Fermanagh.
ROBERT WILLIAMS ARMSTRONG. (L.S.)