IMPROVEMENTS IN EVAPORATING APPARATUS
Year: 1877

page_text: LETTERS PATENT to John Robert Harper, of Clerkenwell, in the County of
Middlesex, for the Invention of "IMPROVEMENTS IN EVAPORATING APPARATUS."
Sealed the 5th April 1878, and dated the 9th October 1877.
PROVISIONAL SPECIFICATION left by the said John Robert Harper at the
Office of the Commissioners of Patents on the 9th October 1877.
JOHN ROBERT HARPER, of Clerkenwell, in the County of Middlesex.
MENTS IN EVAPORATING APPARATUS."
" IMPROVE-
The object of my Invention is the disinfecting and ventilation of ships, houses,
and other places, and to enable persons, by means of a small apparatus, to diffuse
throughout rooms, houses, or other places, any liquid or scent in such a manner as
to expel other and offensive vapours, and for inhaling, and this I do as after
described.
Taking a boiler of suitable material, and preferably of copper, which I rest on a
stand, so as to permit the introduction of a lamp or gas jet underneath, I form at
the top of this boiler a neck, screw, or other connecting piece to receive a top piece,
lid, or covering. This top piece is of a tubular form, provided with a perforated
diaphram and a connecting piece or screw. In this top piece, which is made to fit
into the neck of the boiler, I fix an upright jet, the perforation being small, and
through this the vapour of the liquid in the boiler passes. This jet passes through
the diaphram, and can be fixed in it for support, and is of such a height as to emit
the vapour of the liquid into the upper part of the tubular top piece.
The top piece I so construct that, on being adjusted to the boiler, a space or
opening is left all or partly round it between it and the boiler, so as to admit of the
passage of air. The air, which is drawn in by the emitted vapour, entering at this
opening, passes upwards through the apertures in the diaphram, and uniting with
the vapour of the liquid, rushes out at the top or mouth of the top piece. The
volume of air passing being very great, the vapour of the liquid in the boiler is
+
13

page_text: quickly and equally diffused; and, in the case of ventilation only, complete venti-
lation ensues.
I provide the boiler with a valve, which I construct by fixing the jet to the
connecting piece or screw, or to the perforated diaphram, by means of a spiral spring,
and forming the jet with a ridge, the spring presses the ridge of the jet against the
inner part of the connecting piece, screw, or diaphram formed to receive it.
For the purpose of perfuming, I can place the perfume to be used above the
vapour and above or below the jet, and this I do either by saturating cotton wool
with the perfume, and suspending it from or fixing it on rests in the tubular top
piece, or in some other suitable manner. In this case water only is placed in the
boiler.
SPECIFICATION in pursuance of the conditions of the Letters Patent and of
an Order of the Lord Chancellor filed by the said John Robert Harper in the
Great Seal Patent Office on the 30th April 1878.
JOHN ROBERT HARPER, of Clerkenwell, in the County of Middlesex.
MENTS IN EVAPORATING APPARATUS."
"IMPROVE-
f The object of my Invention is the purification of atmosphere, and the disinfection
and ventilation of ships, houses, and other places, and by means of a small apparatus
to diffuse throughout ships, rooms, and other places any liquid, scent, or
perfume that can be evaporated, for the purpose of disinfecting and purifying the
air of such places and such places themselves, and for inhalation.
I take a boiler A, as shown in section by Figures 1, 2, and 3, of suitable material,
and preferably of copper, which I rest on a stand or place in a position so as to
permit the introduction of a lamp or jet or other means of heat underneath or to
it; and I form at the top of this boiler and neck and screw or other connecting piece a,
Figures 1, 2, and 3 to receive a top piece, lid, or covering B. This top piece is of á
tubular form, provided with a perforated diaphragm, Figure 4, or small bars or plates
in the position of a diaphragm, Figure 5, so as to offer as little resistance to a current
'of air as possible, and be of sufficient strength for the purposes required, and is also
provided with a connecting piece, screw, or aperture C for a jet b, Figures 1, 2, and 3.
In this tubular top piece, which is made to be adjusted to the neck of the boiler, I
place an upright jet, Figures 1, 2, 3, letter b, with a small perforation c¹, and through
this jet the vapour of the liquid in the boiler passes. This jet passes through the
diaphragm or diaphramic piece, Figures 4 and 5, and d, Figures 1, 2, and 3, and can
be fixed in it for support, or can be adjusted or screwed to the neck, and support the
diaphragm and top piece, and is of such a height as to emit the vapour of the liquid
into the upper part of the tubular top piece.
The top piece B, I so construct that, on being adjusted to the boiler, a space or
opening is left all or partly round it and between it and the boiler, so as to admit of
the passage of air, as shown at e, Figures 1, 2, and 3. The air which is drawn in by
"the emitted vapour passes upwards through the apertures in the diaphragm, and

page_text: unites with the vapour of the liquid, and this aerated vapour then passes out at the
top or mouth of the top piece. This becomes quickly and equally diffused.
The apparatus can be applied to simple ventilation.
I provide the boiler with a valve, which I construct by fixing the jet b to the
connecting piece or screw c or a, or to the perforated diaphragm or diaphragmic piece,
Figures 4 and 5, and d, Figures 1, 2, and 3, by means of a spiral spring f, and forming
the jet with a ridge f'; the spring presses the ridge of the jet against the inner
part of the connecting piece, screw, or diaphragm formed to receive it.
Having thus described the nature of my said Invention, and in what manner the
same is to be performed, what I claim is the improved purifying, disinfecting, and
perfuming apparatus, substantially the same and for the purposes. as herein-before
described in this Specification and the Drawings hereunto annexed.
In witness whereof, I, the said John Robert Harper, have hereunto set my
hand and seal, this Ninth day of April, in the year of our Lord One
thousand eight hundred and seventy-eight.
Witness,
WM. H. BAKER,
26, Mayland's Road, W.,
Patent Agent,
JOHN ROBT, HARPER. (L.S.)