Improvements in or connected with Overflows of Baths, Lavatory Basins, Sinks, Water-closets, Bidets, and Cisterns.
Year: 1889

page_text: Date of Application, 26th Feb., 1889
Complete Specification Left, 25th Nov., 1889-Accepted, 18th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in or connected with Overflows of Baths, Lavatory
Basins, Sinks, Water-closets, Bidets, and Cisterns.
We ROBERT GEORGE LAING BURN, and JOHN MACDONALD, trading as Burn and
Baillie of 23 Charlwood. Street, Pimlico in the County of Middlesex, and of 63 and
65 Hanover Street and 34 Alva Street Edinburgh in the County of Midlothian,
North Britain, Sanitary Engineers do hereby declare the nature of this invention to be
as follows:
It has heretofore been found difficult to cleanse the overflow of baths, lavatory
basins, sinks, water closets, bidets, and cisterns having the usual arrangement of fixed
grating hitherto in use and generally formed by making perforations in the side of
the lavatory basin or other vessel. The objects of our invention are to overcome
these defects and to secure the more rapid passage of water down the overflow pipe.
Overflow pipes with fixed gratings as generally fitted are rarely cleaned, invariably
become foul, emit unpleasant smells, and usually become choked.
According to our invention we make the grating in either earthenware, stoneware, or
metal, and movable. It may be hinged or made to lift out and may hang over the mouth
of the overflow opening, or rest inside of the overflow recess upon rebats formed at each
end to receive same. On removing the grating a brush can be easily applied to the
overflow pipe which may be thus kept clean and free from any trace of smell if
regularly attended to.
We make the area of the grating considerably larger than the outlet of the over-
flow arm, which latter should be tapered from the former to the latter, thus ensuring
the overflow pipe being filled to its utmost capacity.
As applied to cisterns our improved overflow is of value more for rapid passage of
waste water in the event of the stem of a ball valve breaking or the ball becoming
detached or ceasing to float from any cause, than for cleansing the pipe, and is much
more efficient in this respect than an ordinary cistern screw.
Dated this 26th day of Wahnu 1000
R. G. L. BURN.
J. MACDONALD.
By Brewer & Son,
33, Chancery Lane, London.
COMPLETE SPECIFICATION.
Improvements in or connected with Overflows of Baths, Lavatory
Basins, Sinks, Water-closets, Bidets, and Cisterns.
We ROBERT GEORGE LAING BURN, and JOHN MACDONALD, trading as Burn and
Baillie late of 23 Charlwood Street Pimlico but now of 14 Newcastle Street, Farringdon
Street, both in the County of Middlesex, and of 63 and 65 Hanover Street and 34
Alva Street, Edinburgh in the County of Midlothian, North Britain Sanitary
Engineers, 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 :-
It has heretofore been found difficult to cleanse the overflow passage of baths,
lavatory basins, sinks, water closets, bidets and cisterns, with the usual arrangement of
fixed grating hitherto in use and generally formed by making perforations in the side
of the lavatory basin or other vessel. The objects of our invention are to overcome
these defects and to secure the more rapid passage of water down the overflow pipe.

page_text: Overflow pipes with fixed grating as generally fitted are rarely cleaned, invariably
become foul, emit unpleasant smells, and usually become choked.
According to our invention and as illustrated in the accompanying drawings which
represent at Figure 1 in front elevation and at Figure 2 in vertical cross section through
the line x y of Figure 1, so much of a lavatory basin as will be necessary to explain
our invention.
We make the grating a in either earthenware, stoneware or metal and removable.
It may be hinged or made to lift out and may hang over the mouth of the overflow
opening or rest inside of the overflow recess upon rebates formed at each end to
receive same as is shewn in the drawings. On removing the grating a a brush can be
easily applied to the overflow pipe 6 which may be thus kept clean and free from any
trace of smell if regularly attended to.
We make the area of the grating a considerably larger than the outlet of the over-
flow arm, which latter should be tapered from the former to the latter, thus ensuring
the overflow pipe being filled to its utmost capacity.
As applied to cisterns our improved overflow is of value more for rapid passage of
waste water in the event of the stem of a ball valve breaking or the ball becoming
detached or ceasing to float from any cause, than for cleansing the pipe, and is much
more efficient in this respect than an ordinary cistern screw.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
In or connected with the overflow of baths, lavatories, basins, sinks, water-closets,
bidets, and cisterns, the removable grating a arranged to lift out from or to hang over
the overflow opening or to rest inside of the overflow recess upon rebates formed to
receive same substantially as and for the purposes set forth.
Dated this 25th day of November 1889.
R. G. L. BURN.
J. MACDONALD.
By Brewer & Son,
33, Chancery Lane, London, Patent Agents.