Year: 1888

page_text: Date of Application, 28th Aug., 1888
Specification Accepted, 28th Sept., 1888
I JAMES MCDONALD WISHART of Marion in the County of Marion and State of
Kansas one of the United States of America a Citizen of the United States 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 reference to devices for heating sad irons by means of gasoline
or other gas generating hydrocarbon fed from a reservoir into a burner in which it is
volatilized the resultant gas being lighted as it issues from a distributing chamber,
and my said Invention has for its object to simplify the construction of such devices
by making the burner and sad iron form one apparatus and so as not to require any
outside source of supply nor any artificial pressure to force the gas into the distributor
also that the supply of gas shall be constant and the pressure capable of being so
regulated that any desired degree of heat can be imparted to the pressing surface of
the iron.
The burner proper is connected at one end with the gasoline reservoir and at the
other end with a gas receiver in communication with a distributor and it consists of
a series of return channels extending from front to rear of the sad iron so as to
secure the perfect volatilization of the hydro carbon before it enters the gas receiver.
The channels of which the burner or gas generator consists may be formed in a
cylindrical bar of metal which may also contain the gas receiver the regulating valve
and the distributing Chambers or the generator may be formed of a coil of pipe, or
lengths of tubing connected with each other and connected at one end with the reservoir
and at the other with the gas receiver thus giving an opportunity for renewal of the
individual parts.
And in order that my Invention may be clearly understood I will now proceed to
further describe the same with reference to the accompanying drawings of which
Figure 1 is a side elevation of a sad iron furnished with my improved heating
apparatus including the gasoline reservoir. Figure 2 a longitudinal vertical section

page_text: through the burner and the lower part of the sad iron. Figures 3, 4 5 and 6 are
transverse sections of the burner the sections being respectively on lines W W,XX, YY,
and Z Z, Figure 2. Figure 7 is a perspective view of a stand used to start the
generation of the gas as hereinafter described. Figure S is a side elevation partly in
section of a sad iron showing a modification of the burner and Figure 9 is an under-
side view of the sad iron with the pressing plate removed to shew the interior.
A is the sad iron proper the construction of which in itself forms no part of this
invention. The reservoir B for the gasoline or the like is arranged outside the sad
iron and is partially supported by a brace B¹ from the end of the handle A'.
This reservoir communicates with the burner or gas generator C by means of a
pipe b.
Ն
The gas generator in which the hydrocarbon is volatilized consists of a triple
conduit or three passages C1 C2 C3 extending the whole length of the sad iron. The
gasoline from the reservoir passes through the pipe into the channel or passage C
and travels to the rear of the burner thence through a passage into conduit or
channel and travelling thence to the front part of the burner where it enters
through a passage C2, the channel or conduit C and from thence to the gas receiver D
by the passage D³ Figure 5.
As shewn in Figures 2 to 6 inclusive the channels C¹(C³ are formed by boring in
a cylindrical metal bar C they are connected by the cross channels C₁ C³ through
which the gasoline passes from one channel to another as shewn in Figures 3 and 4.
Instead of forming the channels in a cylindrical piece as described pipes laid side by
side and connected by elbows at their ends may be used, or a coil as shown in
Figures 8 and 9 answering to the pipes C C and C3 may be employed. In this
case the end of the coil can be carried out and up to the reservoir B.
In the rear of the burner C is the gas receiver D in which is formed a channel or
chamber at D communicating with the end of the channel C3 of the burner. This
chamber D is connected by the channel D³ with the valve chamber D in which works
a screwed valve d. The valve chamber is provided with a small aperture D' opposite
the entrance to the distributing pipe or chamber E which chamber may be formed in
one with the burner as shewn in Figures 1 to 6 or be attached to the said burner as
shewn in Figures 8 and 9. This distributing chamber is perforated with any desired
number of apertures e through which the gas escapes and heats the iron.
The gas receiver with its channels, valve chamber and valve may be made separate
from the burner and connected thereto in any suitable manner but it is essential that
an air space F¹ interpose between the small aperture D' and the distributing
chamber E.
The heating apparatus may be secured to the sad iron in any suitable way and the
gas receiver D'may be wholly or partially outside it.
The sad iron is heated in the following manner.
The bottom plate A of the iron is first removed by withdrawing the screw a² and
the iron with the heating apparatus therein is placed on the temporary stand G
shown in Figure 7 which has a central basin or recess g to hold gasoline which is
lighted. The burner is thus heated so as to volatilize the hydrocarbon fed into the
burner C from the reservoir B and gas is thus generated which gas passes into the
gas receiver D and out therefrom through the passage D' in valve chamber D¹ into
the distributing chamber E where it mixes with atmospheric air entering the
distributing chamber at F. The mixture of gas and air becomes ignited as it
issues from the distributing chamber E through the apertures e whereupon the
bottom or pressing plate is replaced and secured in position by the screw a³ and the
iron is ready for use.
The course of the gasoline fed from the reservoir B passes first along the channel
or pipe to the rear end of the iron then by the return pipe to the front end
and again through pipe C to the gas receiver its flow may be retarded by wire
gauze, gravel or other substance (not however shown in the drawings) placed in the
pipes.
As the hydrocarbon is completely volatilized during its flow through the pipes or
:

page_text: channels composing the burner no artificial or outside pressure other than that of the
fluid in the reservoir is needed to keep the supply of gas constant and the supply of
gas to the distributing chamber may be regulated as described by means of the
valve d so as to allow of any desired amount of heat being applied to heat the
pressing surface A to the required degree, also to regulate the consumption of
fuel.
Having now particularly described and ascertained the nature of this Inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
1. In apparatus for heating sad irons the combination with a reservoir for hydro-
carbon, of a burner containing a passage or passages through which the hydrocarbon is
caused to pass and in which it is converted into gas or vapour the said burner being
arranged between the reservoir and a gas receiver containing channels, and a valve
chamber and valve an air chamber and a distributing chamber substantially as and for
the purpose hereinbefore described with reference to the accompanying drawings.
2. In apparatus for heating sad irons the combination with a burner in which gas
is generated, of a gas receiver interposed between the said burner and an air or
mixing chamber containing channels by which the gas is carried to a valve chamber
opening into said air chamber and a distributing chamber substantially as and for the
purpose hereinbefore described with reference to the accompanying drawings.
3. The general constructions combinations and arrangements of parts constituting
apparatus for heating sad irons substantially as hereinbefore described and illustrated
by the accompanying drawings.
Dated this 28th day of August Lodd.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents.