Improvement in Lime Light Jets.
Year: 1892

page_text: Date of Application, 21st Mar., 1892
Complete Specification Left, 21st Dec., 1892-Accepted, 18th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvement in Lime Light Jets.
I, DAVID WILLIAM NOAKES, of 23 Nelson Street, Greenwich in the County of
Kent, Engineer & Optician do hereby declare the nature of my said invention for
IMPROVEMENT IN LIME LIGHT JETS to be as follows:-
:―
When the lime jet is used as a radiant either singly or in conjunction with
optical instruments it is desirable to obtain the utmost intensity of light. Hitherto
lime light jets, have been constructed with one mixing chamber only into which
hydrogen and oxygen or oxygenated ether and oxygen or other suitable gases are
introduced by means of separate conduits, after coming together and mixing as far
as possible in this single chamber they issue from the outlet & being lit impinge
upon a piece of lime heating it to incandescence the more intimately the gases can
be mixed the greater the state of incandescence that can be produced. In my
invention the gases are more intimately mixed by using two chambers in lieu of one
which to suit existing apparatus are preferably constructed one within the other
and conical in section although for some requirements it might be necessary to
separate the chambers or alter their sectional shapes.
Dated this 21st day March 1892.
DAVID WILLIAM NOAKES.
COMPLETE SPECIFICATION.
Improvement in Lime Light Jets.
DAVID WILLIAM NOAKES South London Optical Works, 23 Nelson Street,
Greenwich, in the County of Kent, Manufacturing Optician, 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 :-
Hitherto lime light jets of the form known as mixed or chamber jets have been
constructed, with a mixing chamber, into which the gases used are passed by means
of service tubes, and, after mixing in the chamber are allowed to issue from a
nozzle, and ignited impinge upon a piece of lime or other substance till incandescent
and intense light results-to bring about a high state of incandescence and thereby
increased light, it is necessary, that the gases used shall become intimately mixed,
and hitherto some mixing chambers have been packed with granulated pumice wire
gauze, perforated discs, and other materials and contrivances, in order to bring
about a closer association of the various gases used. The packing of the chamber
though in some cases partly successful, has a tendency to brake down the pressure
and become clogged, and dirty, or fused.
By means of my invention, I pass the gases through two or a series of chambers,
bringing about a more intimate association of the gases, and without the use of
packing or loss of pressure. By means of the tubes, C. D. oxygen and hydrogen,
or oxygenated ether and hydrogen or any gases used for the purpose of heating the
lime to incandescence are conveyed to the outer chamber B-which is shewn in
part section in the drawing. Into the outer chamber B is fitted the 2nd chamber A
preferably in shape, two hollow cones base to base, the bottom of the interior
chamber is left open and preferably should extend below the point where the
tubes C. D enter the outer chamber B.
By means of my invention the gases first pass into the outer chamber B and
there are partially mixed, from the outer chamber B-the gases are then compelled
to pass into the hollow double cone chamber A, and there become more intimately
อ. 01

page_text: mixed before emerging from the nipple E and impinging on the lime or other
substances, that may be desired to raise to a state of incandescence, my description
and drawing refer to an arrangement of a compound chamber suitable for adaption
to existing lime light jets-and is so contrived that one chamber is situate within
the other, but it is obvious that 2 single chambers can be used connected by tubes
or that a series of single or compound chambers can be connected and used.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1st. The method of passing the gases used in lime light jets through one mixing
chamber to another mixing chamber or series of chambers.
2nd. The combination of an inner mixing chamber, within an outer mixing
chamber substantially as described.
3rd. The conical exterior and conical interior form of the inner chamber A sub-
stantially as shown.
Dated this 21st day of December 1892.
DAVID WILLIAM NOAKES.