IMPROVEMENTS IN APPARATUS FOR HEATING AND COOKING PURPOSES
Year: 1875

page_text: LETTERS PATENT to Samuel Loebl, of the Firm of J. Loebl and
Company, of Aldermanbury, in the City of London, Manufacturers,
for the Invention of "IMPROVEMENTS IN APPARATUS FOR HEATING AND
COOKING PURPOSES."
Sealed the 7th May 1875, and dated the 19th February 1875.
PROVISIONAL SPECIFICATION left by the said Samuel Loebl at the
Office of the Commissioners of Patents, with his Petition, on the
19th February 1875.
I, SAMUEL LOEBL, of the Firm of J. Loebl and Company, of
Aldermanbury, in the City of London, Manufacturers, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN APPARATUS
FOR HEATING AND COOKING PURPOSES, to be as follows:-

page_text: factories in which gas is used for heating tools. A gas stove or tripod
is connected with a gas supply pipe, which also communicates with a
moveable gas pipe, which is in effect a tubular or hollow arm or lever
weighted, and working a cock, plug, or throttle valve, which opens and
closes communication between the gas supply and the stove or tripod
through the first-named pipe. This tubular arm or moveable gas pipe
may be furnished with a frame, support, or contrivance to bear or be
pressed or acted on by the tool or article to be heated.
When the tool or article is placed or pressed on the moveable gas pipo
or hollow arm the latter opens the thoroughfare through the first-
named gas pipe, so that gas is supplied to the stove and the flame or jet
of the ignited gas in the moveable pipe or arm (which is kept alight) is
brought to the gas jets of the stove which it kindles, and the tool or
article can be heated. When the tool or article is removed the moveable
pipe or arm resumes its position, the gas flow to the stove is stopped, and
the flame is removed from the stove.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Samuel Loebl in the Great Seal Patent Office on
the 11th August 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMUEL
LOEBL, of the Firm of J. Loebl and Company, of Aldermanbury, in the
City of London, Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of February, in the year of our
Lord One thousand eight hundred and seventy-five, in the thirty-eighth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Samuel Loebl, Her special license that I, the said
Samuel Loebl, my executors, administrators, and assigns, or such others
as I, the said Samuel Loebl, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and
at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle

page_text: of Man, an Invention for "IMPROVEMENTS IN APPARATUS FOR HEATING AND
COOKING PURPOSES," upon the condition (amongst others) that I, the said
Samuel Loebl, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Samuel Loebl, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the accompanying
Drawings, and to the letters and figures marked thereon, that is to
say :-
The object of this Invention is to prevent waste of gas used for
heating and cooking purposes. It is especially applicable for manu-
factories in which gas is used for heating tools. A gas stove or tripod is
connected with a gas supply pipė, which also communicates with a
moveable gas pipe, which is in effect a tubular or hollow arm or lever
weighted, and working a cock, plug, or throttle valve which opens and
closes communication between the gas supply and the stove or tripod
through the first-named pipe. This tubular arm or moveable gas pipe
may be furnished with a frame, support, or contrivance to bear or be.
pressed or acted on by the tool or article to be heated.
:
When the tool or article is placed or pressed on the moveable
gas pipe
or hollow arm the latter opens the thoroughfare through the first-named.
gas pipe, so that gas is supplied to the stove and the flame or jet of the
ignited gas in the moveable pipe or arm which is kept alight is brought
to the gas jets of the stove which it kindles, and the tool or article can
be heated. When the tool or article is removed the moveable pipe or
arm resumes its position, the gas flow to the stove is stopped, and the
flame is removed from the stove.
I now proceed with reference to the accompanying Drawings to
describe apparatus constructed according to my Invention.
Figure 1 is an elevation, and Figure 2 a plan of one arrangement of
apparatus. A is a tripod or stove in the centre of which is fixed ar

page_text: chamber or atmospheric burner B furnished at its upper end with a cap
or slightly convex plate 6 pierced with holes 6x for the passage of gas
to be burned. The gas is fed to the chamber or atmospheric burner B
through pipes or passages C, C*. At the extremity of the pipe C is a
gas burner c of ordinary construction through which the gas passes to
the plate b. The lower part of the chamber or atmospheric burner B
which receives the gas burner c is of larger diameter or bulges out more
than at the top; t is an orifice or air hole for admission of atmospheric
air for supporting.combustion.
The pipes or passages C, Cx, and G are composed of three portions;
C is the portion which is fixed close against the chamber B; G is the
portion or socket which unites the parts C, C*, and which contains the
plug or conical key d for opening and closing the gas ways; the last or
third portion C* is attached to a gas supply pipe by a flexible tube Y,
or in any other convenient manner. At the head or larger portion of
the plug d is fixed a rocking or moveable hollow or tubular arm D,
furnished with a ring frame or circular portion fat its upper end, and at
its lower end with a weight e.
By arrangements to be herein-after described the gas is always
supplied to this arm D, and a constant jet or flamo K is kept constantly
burning. Now when this arm D is pressed down, as shewn in dotted
lines in Figure 1, by the tool or other article placed on the ring f, it
turns the tap or cock d and allows the gas to pass through the
orifices 6*, and it becomes kindled by coming in contact with the
constant flame or jet k. Directly pressure is removed from the arm it
rises by means of the weight e and the flame is extinguished, and only
the little flame & burns.
Figures 3, 3, 4, and 5, show the arrangements in detail of tap or
cock for opening and closing the gas passages or thoroughfares. Figure 3
is a horizontal section of the cock or tap taken on the line x, y, of
Figure 4, showing it in its open position for supplying gas to the stove and
also to the arm D. Figure 3* is also a horizontal section of the cock or
tap, but in this Figure it is shewn closed, and only admits gas to feed
the little flame, k in the arm D.
Figure 4 is a vertical section taken on the line a, ß, of Figure 2, also
shewing the gas passage open, and Figure 5 is a similar section showing

page_text: As the arm is lowered
passage p which is in
When this arm is in
the
gas passage closed. G is that portion which is hollowed out for the
reception of the key or conical plug d, and which also unites the pipes O
and C. This key or plug has a hole or passage p formed in the middle
of its body, through which the gas passes in order to feed the stove;
P* is a passage at right angles to the passage p through which the gas
always passes to the arm D to feed the flame k.
it causes the plug to turn in its seat and opens the
communication with the pipes or passages C, C*.
its raised position the flow of gas is interrupted or prevented from
entering the pipe C by the plain portion of the key or plug d coming
against the bore of the pipe C, as seen in Figure 3*, thereby closing its
passage or thoroughfare, but if a tool or other article be placed on the
ring fits weight at once depresses the arm and causes the plug d to
turn, and opens communication with the pipe (as in Figures 3 and 4).
The plug is kept in place by a washer q and screw nut q*.
The arrows in Figure 3 indicate the course of the gas from the
pipe C to the arm D and pipe C. H, H, are brackets or supports for
holding a kettle, saucepan, or other cooking utensil. The chamber or
atmospheric burner B is kept in place by a cross bar or stay 8. A pin
or projection n on the plug d controls the rising of the tubular rocking
or moveable arm D.
The same
Figures 6, 7, and 8 show a modification of my apparatus.
letters of reference indicate similar parts to those shown in the preceding
Figures. In this arrangement I dispense with the cock or tap, and
instead thereof a valve is used; I also employ a supplementary pipe
which passes from the bottom of the valve, and is carried under the
pipe C and up through the chamber or atmospheric burner B.
Figure 6 is sectional elevation of the stove or tripod; Figure 7 is a
plan, and Figure 8 shows the detail of the valve arrangement in vertical
section. J is the supplementary pipe above mentioned which is kept
constantly supplied with gas from the pipe C* through the passage c³,
and it passes up through the chamber or atmospheric burner B and
projects at the top therefrom where it is provided with an orifice to allow
a constant flame k to be burned; Z is the valve furnished with a rod,
spindle, or plug r; the end of this rod or plug is conical and fits into a
seat. This rod, spindle, or plug passes through a stuffing box m

page_text: .
provided with a packing m* to prevent escape of gas; E is a bearing or
lug in which the arm f* carrying the ring or frame fand weight e is
centered, and works on an axis or pin e'. This arm passes through a
hole formed at the upper part of the rod, spindle, or plug r, so that as
the ring or frame f is depressed it causes the rod or spindle to rise, 1
and lifts the plug or conical end from its seat z, thereby allowing
the gas to enter the pipe C and to flow to the perforated plate 6 where
it ignites by coming in contact with the small jet or flame k; t, t, are
holes or orifices in the chamber or atmospheric burner B for the entry
of atmospheric air to promote combustion. In Figure 8 the valve is
shewn in its raised or open position.
•
Although I have shewn a weight e at the end of the arm f*, it is
obvious that a spring or other equivalent contrivance may be used for
restoring the arm to its normal position.
An enormous economy results from the use of this apparatus, as only
the small flame k consumes the gas constantly, and the gas required for
the stove is only burnt when wanted. It is especially applicable in
workshops and manufactories where gas is the agent employed for
heating tools, as the waste prevented by it is obvious. It is also useful
for lighting, cooking, and warming purposes, also in nurseries and in
bedrooms, and particularly in those of sick persons, as the small flame
serves as a night light.
Having now described the nature of the said Invention, and in what
manner the same may be performed, I declare that I claim,-
First. The arrangement of apparatus for heating and cooking purposes
as above mentioned, and as shewn in Figures 1, 2, 6, and 7 of the annexed
Drawings, in which a moveable or oscillating hollow or tubular arm is
combined with a tap, plug, and chamber or atmospheric burner, in such a
way that on pressure being applied to a frame, support, or ring, in
connection therewith, the arm is depressed and permits the gas to flow
to such chamber or atmospheric burner where it is lighted, and on
pressure being removed the flow of gas through to the atmospheric
burner is stopped as set forth..
Second. The improved apparatus shewn in Figures 3, 3*, 4, 5, & 8
of the annexed Drawings, in which the tap, cock, or valve is employed

page_text: for regulating the flow of gas in the manner substantially as and for the
purposes described.
In witness whereof, I, the said Samuel Loebl, have hereunto set
my hand and seal, this Ninth day of August, in the year One
thousand eight hundred and seventy-five.
Witness,
ERNEST DE PASS,
Patent Agent,
68, Fleet Street,
London.
S. LOEBL. (L.S.)