An Improved Sanitary Closet or Privy.
Year: 1890

page_text: Date of Application, 5th Apr., 1890-Accepted, 7th June, 1890
COMPLETE SPECIFICATION.
An Improved Sanitary Closet or Privy.
I, WILLIAM BUTOHER of Spencer Place, Blackheath in the County of Kent,
Chemist, do hereby declare that I am in possession of an invention communicated to
me by Joseph Hargreaves, of Ipswich, Queensland, Australia and 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 :-
This invention has been specially devised in order to provide a closet or privy complete
in itself and at the same time if required portable. This closet or privy is a ventilator
in itself & may be worked as an over-the-surface system it can be made to any pattern,
dimensions of any materials and to suit any place. By it the use of earth, chemicals, or
other deodorants is dispensed with and the excrement is obtainable in its natural state.
It is inexpensive in adoption & use.
This improved sanitary closet or privy relates to those closets or privies which are
deodorised by means of an air current entering the body of the closet through the seat
aperture and passing away through an uptake or flue discharging somewhat above the
level and this invention consists in a peculiar combination and arrangement of
mechanical parts forming an effective closet or privy of this description.
But in order that this invention may be clearly understood reference will now be
made to the drawings herewith in which Figure Sheet 1 is a sectional elevation of
my improved air closet Figure 2 is a plan Figure 3 a cross-section and Figure 4 a
view shewing the connections of the escape pipe. A is a box or casing. B is a tray.
Cis a bucket. D escape pipe. E closet seat. A¹ a receiving pan. A² aperture.
A circular trough. B' lower trough. B' handles. B³ snug pieces. Chandles. D' top
pipe. D' circular trough. D³ lifters. The case A is airtight so far as the bottom is
concerned as it fits into the trough B' which is filled with water and forms an airtight
connection between the case A and tray B. The uptake D causes a draught in through
the aperture A and carries off all foul odors, effluvia and noxious gases arising from
the excreta & foul matter deposited in the bucket C.
I prefer that the area of pipe D should exceed that of aperture A'.
To empty the closet pan the pipe D is lifted by handles D³ and the case A on the
tray B is drawn out from under the seat by handles B. The casing A is then lifted off
the tray B and the bucket O taken out and emptied. The bucket C or a substitute is
replaced between the snug pieces B³ the case A replaced in the trough B' on the tray B
which is pushed forward until the casing takes its proper place under the seat E. The
pipe D is then replaced in the circular trough A' and the apparatus is again ready for
use. When the pipe D' is very long to obviate the lifting the whole of it the upper
part of it is supported by the building while a shorter lower piece is connected to it by
means of the joint or trough.
Fig. 5. Sheet 2 shews a form of closet adapted for fixing inside the house & more
suitable for climates with a dense atmosphere. The casing A is fitted with flap valves BA
coupled together by a link and levers as shewn so when the hinged lid C is closed
a current of air passes round the casing B from the outside of the house through the
valves BA through the casing A into the uptake D which may be provided with mica
valves E to prevent down draught. When the closet lid C is lifted the flap valves BA
automatically shut and remain so until the lid is closed again. The lid can be so
arranged that it cannot be left open, by a tumbler weight or spring.
In some localities it may be necessary to fit the uptake with a Royle's air pump or
similar device Figure 6 so that the air is exhausted & a good current of air is main-
tained & down draught prevented. Figure 7 shews the uptake fitted with a gas or oil
burner so the air becomes rarefied and a constant current is maintained even when the
atmosphere outside is very dense as in the case of a fog.

page_text: It may be sometimes convenient with this system to connect the uptake to a chimney
stack so that the rarefied air may induce a free current through the uptake.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is.
1. The improved sanitary closet or privy the essential features of which are the air-
tight box or casing with only the aperture in the seat and the aperture for an uptake
or fine and the water troughs or seals substantially as herein described and explained
and shewn in Figs. 1, 2, 3, and 4.
2. An improved sanitary closet or privy provided with a lid or cover C controlling
the air inlet valves B to the casing A the mica valves E for the purpose set forth.
3. The methods of inducing a current of air through the casing A & uptake in
connection with the sanitary closet or privy as shewn & described in the accompanying
specifications & drawings.
Dated this Third day of Anril 1890
WILLIAM BUTCHER..