Domestic, and Manufacturing Uses.
Year: 1886

page_text: Date of Application, 8th Oct., 1886.
Complete Left, 8th July, 1887.
Complete Accepted, 26th Aug., 1887.
Domestic, and Manufacturing Uses.
I FREDERIC WILLIAM HART of 8 and 9 Kingsland Green London in the County of
Middlesex, Manufacturer of Scientific Apparatus, do hereby declare the nature of
this Invention to be as follows:
I construct the body of the stove or furnace with a top or surface having any
desired number of circular, segmental or straight_channels or ribs under or behind
which is a gas chamber, into these channels or ribs I fit rings, segments, bars or plates
of corresponding section to the above mentioned channels, or ribs these rings, segments
or bars together with the channels are now drilled through into the gas chamber with
a series of suitable sized holes preferably not less than three diameters apart; the
rings, segments or bars are now ground into their seatings and next each hole is fitted
with a burner tube; two, three or more narrow plates are fixed over the rings,
segments or bars to retain them in their seatings but so disposed as to permit the
burner tubes being moved at least one and a half diameter to the right or left as
desired for the purpose of shutting off part or the whole of the gas from that series of
tubes By this devise I can have a large surface covered or studded with numerous
burners either giving glow flames of mixed or "unmixed" gases or a powerful series of
flames, luminous or Bunsen" at will.-An operation or heating may be commenced
by a series of say three burners and gradually augmented to any number or the
procedure reversed and the heat gradually let down. The gas chamber is connected
with the gas supply by a mixing tube which answers for both kinds of flame by being
provided with an air cut off after the manner usual with "Bunsen burners."
Dated this Eighth day of October 1886.

page_text: Improvements in Gas Fires, Stoves, or Furnaces for Chemical,
Domestic, and Manufacturing Uses.
I FREDERIC WILLIAM HART of 8 & 9 Kingsland Green London in the County of
Middlesex, Manufacturer of Scientific Apparatus do hereby declare the nature of
this my 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 for its object the control of any number of non-luminous or
luminous flames in series supplied from a chamber common to all the burners such
chamber being supplied with plain ordinary gas or other gases and mixtures with air,
known to be employed for heating purposes either direct or radiating-The stoves
Fires or Furnaces may be of almost any extent and disposed as circular, segmental or
rectangular and irregular shaped planes; inclined planes conical stoves and segments
of cones. Each series is capable of being shut off partially or fully while all the
others may be at the minimum or maximum strength of flame, the quantity of gas
& air being regulated by a main tap and air valve so that either the luminous
or non-luminous flames can be used as desired.
For the better elucidation of my invention the eight drawings appended will shew
a few of the forms and construction the drawing of the air valve of Fig. 1 & 2-being-
used to each is not reproduced in the other drawings.
Fig. 1. shews a concentric burner or stove with three sliding rings containing
32 burners for circular evaporating furnace and domestic boiling and stewing.
Fig. 2. Section of the same.
Fig. 3. Shews a rectangular form of stove with 5 straight slides containing thirty
burners for oblong Furnace.
Fig. 4. Section of the same.
Fig. 5. Shews a section of an inclined stove of six tiers which may be either
straight or segmental slides suitable for standing in ordinary fire places for heating
rooms by means of the usual asbestos or other radiating materials disposed above the
flames to be made red hot or fully incandescent then produceing a powerfully emissive
light as well as heat.
Fig. 6. Shews a stove in the form of a truncated cone suitable for large spaces to
be heated.
Fig. 7. Shews the plan of a stove with 15 series of burners of 5 each any one of
which can be used independent of the others say one at each corner and one in
the middle or rows in any direction longitudinal, transverse or oblique.
Fig. 8. Shews a plan of stove for a specially shaped vessel or surface to be heated
where either series of 5 burners can be employed as needed.-As shown there are
30 burners turned on and 15 off.
Having given a general outline of the nature of my invention I now more
particularly describe the principle of construction.

page_text: I construct the body of the Gas Stoves or furnaces with an upper surface C Fig. 2
having any desired number of circular, segmental or straight ribs or channels, the
form I prefer to make is rounded as shewn at at c, Fig. 2. To the ribs (or channels
if such is used) I fit ring segments of circles straight bars or plates c¹ of corre-
sponding section by turing planing and grinding so as to be sufficiently gas tight,
these parts are now firmly clamped together and the number of holes required
are then drilled through the two parts the upper of which are to receive the
burner tubes B, before unclamping a register mark is placed on each part.-The
rings or bars e and burner tubes B may be cast in one piece with cores and
then the drill passed through the cored tubes to ensure the register of the two
parts. The burner tubes must not be nearer to each other than two diameters
so as to provide sufficient cover when turned or slid off action I prefer to use a
number of small bore tubes to a lesser number of tubes of equal area, the length
of the tubes may be shorter than shown even to the extent of simple holes in the
sliding parts or increased in length to suit any special requirement, but let it be
understood that I prefer a moderate length of burner tube so as to provide for a free
circulation of air between them to the outside of the flames and also to enable one to
cover the body with a non conducting layer or sheet of asbestos or other heat resisting
material in the case of powerful furnaces. Plates 6 Fig. 2, are employed to keep the
parts together or broad-headed screws may be employed alone as shown at 61
Fig. 5 these screws may serve as stops for studs d Figs. 1 and 2 for shutting off and
on or intermediate when one series is used low while other series are at full power.
The flames can be adjusted to display a cone of flame (^) or inverted (V) cone.
The gas chamber A Figs. 1 and 2, I prefer to make with projections as indicated at a,
to aid the mixing of air with gas when using non-luminous flames and when it is
desired to change the character of the flame from non-luminous to luminous or vice
versa it is more quickly effected owing to lesser volume of gas in such a chamber.
The gas supply connected to the tube G, which has a cone jet q and air valve
capable of being screwed backwards on S to admit the proper quantity of air, or
otherwise the valve and tube S are drawn back through the fitting S' and fixed by
binding screws s.
v
The slides are easily and simply moved by an iron rod or each slide can be cast
with a few teeth of a rack to which a pinion with spindle is fitted reaching to the
outside of stove or furnace.
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
1st. The employment of circular sliding rings, sliding segments of rings and
sliding straight bars each with gas burning tubes for use in Gas Fires, Stoves or
Furnaces substantially in the manner and for the purposes hereinbefore set forth and
described.
2nd. The employment of the before mentioned rings distributed in regular or
irregular order over any shaped surface for use in Gas fires, Stoves or Furnaces
substantially in the manner and for the purposes herein before set forth and described.
Dated this 8th day of July 1887.
FREDERIC WM. HART.