Year: 1886

page_text: Date of Application, 3rd Aug., 1886.
Complete Left, 1st Apr., 1887.
Complete Accepted, 2nd Aug., 1887.
I, CHARLES GARDENER of 8 Lambeth Walk in the County of Surrey (Engineer)
do hereby declare the nature of this invention to-be as follows:-
This invention relates to Sadirons of the box type and in which an atmospheric-
gas flame is applied to heat the iron continuously from the interior. In using
apparatus of this description it is found advantageous to subject the air to be mixed
with the gas to a
slight pressure in order to ensure a sufficient quantity of the
former entering the confined chamber and effecting proper combustion of the gaseous
fuel.
A sadiron constructed according to this invention comprises the usual box iron the
upper side of which is commonly furnished with a handle. The larger end of the chamber
is open to permit a body, which we call the burner, to be introduced. This body may be
of cast iron or other suitable material and is arched or saddle shaped in cross section.
Each of the edges of the saddle piece resting on the floor of the chamber is provided
with a series of recesses, which, in conjunction with the said floor, form passages
communicating between the central portion of the burner and the interior of the
chamber. One end of the saddle-piece or burner terminates in a plate which fills
the opening in the extremity of the chamber and in which the pipe serving to convey
the gaseous fuel is screwed. The air and gas are mixed in their proper proportions
before arriving at the burner, the air and gas pipes being respectively provided with
regulating valves.
When this apparatus is in operation, the flame commences at the extremity of the
inlet pipe, extends through the interior of the saddle-pieces and traverses the passages
hereinbefore described as formed upon the floor of the chamber. The heat is thus
concentrated upon the body which serves as burner and distributor and upon the back
of the working face of the iron the unconsumed products of combustion escape from
the chamber through ventilating orifices provided in the end plate of the burner or

page_text: elsewhere as may be deemed convenient, the burner or saddle piece is fixed by means
of set screws from the top side of the iron and if a small portion of Asbestos is used in
the saddle piece or burner it will be found more effectual.
I am aware that endeavours have been made to heat sadirons of the box type by
means of a hollow atmospheric gas burner arranged within the iron, the under side of
the burner being provided with a considerable number of small holes from which the
gaseous fuel issues, the flame impinging against the floor of the iron, such jets of flame
being very small are highly sensitive and in using the iron many of them frequently
become extinguished whereupon the gas escapes unconsumed, the apparatus is
rendered less effected and the atmosphere is polluted.
Dated thin 60th day of I... 100
CHARLES GARDENER,
8, Lambeth Walk.

page_text: COMPLETE SPECIFICATION.
Improvements in Internally Heated "Sadirons.”
CHARLES GARDENER, of No. 8 Lambeth Walk, in the County of Surrey, (Engineer)
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:-
That this invention relates to "Sadirons of the box-type and in which an
atmospheric gas flame is applied to heat the iron continuously from the interior.
In using apparatus of this description it is found advantageous to subject the air to
be mixed with the gas to a slight pressure in order to ensure a sufficient quantity of
the former entering the confined chamber and effecting proper and complete combus-
tion of the gaseous fuel.
In the annexed sheet of drawings Fig. 1 is a sectional side view of my improved
sadiron.
Fig. 2 a section at line at a a Fig. 1. A sadiron constructed according to this
invention comprises the usual box-iron, the upper side of which is commonly
furnished with a bow-handle A. The larger end or back of the chamber B is
open to receive the burner C of cast-iron or other suitable material and may be
arched or saddle-shaped as shown at D.
Each of the edges of the saddle piece resting on the floor of the chamber B is
provided with a series of recesses E which in conjunction with the said floor B
form passages communicating between the central portion of the burner C and the
interior of the chamber B. One end of the saddle-piece or burner C terminates in
a plate F which fills the opening in the extremity of the chamber B and in which
the pipe G serving to convey the gaseous fuel is screwed. The air and gas are
mixed in their proper proportions before arriving at the burner the air and gas
pipes being provided with regulating valves fitted in any convenient part.
When this apparatus is in operation the flame commences at the extremity of the
inlet pipe G, extends through the interior of the saddle-piece or burner C and traverses
the passages or recesses E hereinbefore described, formed upon the floor of the
chamber B.
The heat is thus concentrated upon the body which serves as burner and
distributor C and upon the back of the working face of the iron B the unconsumed
products of combustion escape from the chamber through ventilating orifices H
provided in the end plate F of the burner C or where convenient: the burner or
saddle-piece C being fixed by means of set screws from the top side of the iron B.
By using a small portion of asbestos in the Saddle-piece or burner C, a greater effect
will be obtained. Sad-irons of the box type have been used and heated by means of a
hollow atmospheric-gas burner, arranged at the top of the iron, the under side of the
burner being provided with a considerable number of small holes for the flames which

page_text: impinge against the floor of the iron; such jets of flame being very small are highly
sensitive, and in actual use frequently become extinguished whereupon the gas escapes
unconsumed rendering the apparatus unoperative, gas is wasted and the atmosphere
is polluted.
Having now described the nature and particulars of my said Invention, I declare
that what I claim is :-
:-
The Saddle-piece or burner C as and for the purpose herein set forth and shewn by
the drawings.