Improvements in Internally Heated Sad Irons.
Year: 1893

page_text: Date of Application, 11th Nov., 1893
Complete Specification Left, 8th Aug., 1894-Accepted, 8th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Internally Heated Sad Irons.
I HERBERT WILLIAM WILSON of Wilson Brothers Limited, of Cornholme,
Todmorden, in the County of Lancaster, Bobbin Manufacturers, do hereby declare
the nature of this invention to be as follows:-
My invention relates to the hollow sad irons which are used in ironing, smoothing
and pressing as is well understood, and in particular to the class of irons heated by
means of incandescent fuel, such as charcoal, introduced into the hollow bodies of
the irons.
Such irons are each constructed with an air inlet opening at the rear and
with a chimney at the front end for the emission of gases and products of
combustion.
The said inlet opening has been closed by means of a swivel shutter which has
been turned upward to unclose the opening.
This shutter has been liable to turn down and close the opening during the use
of the iron and being hot has been troublesome to manipulate. I dispense with
the said shutter and provide a shutter valve or closing part at the outlet end of
the chimney. Such shutter may be fitted to slide or to swivel or may be in the
form of a removable cap.
I prefer to use a disc mounted as a throttle valve. The spindle of such valve
may be of a double or split form to give facility of attachment of the valve and
by its spring to cause the valve to remain in its adjusted position. Such a valve
furnishes means for regulating the heat of the iron. In order that the gases may
be delivered in a direction to suit the operator I propose to fit the chimney to
swivel so that the outlet may be set to deliver to the right hand or the left or
midway or in any desired direction either with or without limits as may be considered
advisable. The lower end of the chimney may be fitted to turn in or upon a
circular seating and be retained by means of a ring pin screw or other fastening
or be constructed to be self locking, or to be removed and replaced in a different
position.
The chimney might be fixed as usual and be formed with more than one outlet
each provided with a valve but I consider the swivel chimney to be the most
suitable.
Dated this 10th day of November 1893.
E. K. DUTTON & Co.,
5, John Dalton Street. Manchester, Agents.
COMPLETE SPECIFICATION.
Improvements in Internally Heated Sad Irons.
1 HERBERT WILLIAM WILSON of Wilson Brothers Limited, of Cornholme,
Todmorden, in the County of Lancaster, Bobbin Manufacturers, 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 and accompanying drawings:
:-
My invention relates to the hollow sad irons which are used in ironing, smoothing
and pressing, as is well understood, and in particular to the class of irons heated

page_text: by means of incandescent fuel, such as charcoal, introduced into the hollow bodies
of the irons.
-Such irons are each constructed with an air inlet opening at the rear and
with a chimney at the front end for the emission of gases and products of
combustion.
The said inlet opening has been closed by means of a swivel shutter which has
been turned upward to enclose the opening. This shutter has been liable to turn
down and close the opening during the use of the iron, and being hot has been
troublesome to manipulate.
I dispense with the said shutter and provide a shutter valve or closing part at
the outlet end of the chimney.
Such shutter may be fitted to slide, or to swivel or may be in the form of a
removable cap. I prefer to use a disc mounted as a throttle valve. The spindle
of such valve may be of a double or split form to give facility of attachment of the
valve and by its spring to cause the valve to renain in its adjusted position. Such
a valve furnishes means for regulating the heat of the iron.
In order that the gases may be delivered in a direction to suit the operator, I
propose to fit the chimney to swivel so that the outlet may be set to deliver to the
right or the left or midway or in any desired direction, either with or without
limits as may be considered desirable. The lower end of the chimney may be
fitted to turn in or upon a circular seating and be retained by means of a ring pin
screw or other fastening, or be constructed to be self locking or to be removed and
replaced in a different position. The chimney might be fixed as usual and be
formed with more than one outlet each provided with a valve, but I consider the
swivel chimney to be the most suitable.
The annexed sheet of drawings will make my invention perfectly clear.
Fig. 1 is a side view of a hollow sad iron, fitted with the improved shutter valve
outlet.
Fig. 2 is a front view of the chimney showing the valve.
Fig. 3 is a longitudinal section of that part of the chimney which contains the
shutter valve.
Fig. 4 shows a chimney intended to swivel.
I will not refer to the parts of the sad iron not affected by my invention.
In ordinary sad irons of this type the air inlet was situated at the rear, and was
covered by a pivotted shutter which is indicated by dotted lines in Fig. 1 at . An
objection to this pivotted shutter is that it is apt to close when the iron is in use,
and as it becomes very hot it is inconvenient to manipulate.
As a substitute for this shutter I provide a shutter valve a at the outlet end of
the chimney. This shutter valve may assume various forms but I consider that
the form I have chosen for illustration is the most convenient and economical.
I mount a disc a on a spindle c, the disc practically closing the chimney when
turned across the inlet but capable of being opened to any required degree by
simply turning the spindle c. The spindle c is formed from a split pin, the spring
of which maintains the valve a in any position into which it may be turned. The
pin c clips over the disc a and holds it as shown in Fig. 3.
In Fig. 2 the valve is shown as partly open or as indicated by the dotted position
in Fig. 3.
Instead of the throttle valve arrangement described I might apply a sliding
damper or valve, or a removable cap, or a sliding or movable thimble to cover or
uncover slots or holes, or in any other convenient form, so long as it is applied to
the chimney so as not to fall or close by the mere handling of the iron.
As shown in Fig. 4 I might make the upper end of the chimney 6 to swivel so
that the chimney may be set to deliver the gases or products of combustion
to the right or to the left or in any other direction most convenient to the
operator.
The ring or other swivel joint d is at any convenient point in the depth of the
chimney.

page_text: I might use these two improvements in sad irons either separately or in
combination,
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.
1. In a sad iron of the indicated construction, applying a governing valve of
any suitable description to the chimney for the purposes and substantially as
herein before described and shown.
2. The application of a governing valve to the inlet of the chimney of a hollow
sad iron, the said valve consisting of a disc carried on a spindle which consists of
a split pin, the whole formed, applied and manipulated substantially as described
and as illustrated in the drawings.
3. In a sad iron of the indicated nature, constructing the chimney so as to be
capable of swivelling or being turned to right or left as most. convenient to the
operator, substantially as described and as illustrated in Fig. 4 of the drawings.
4. In a sad iron of the indicated description the combination of a controlling
throttle or other valve applied to the chimney, with a swivelling chimney
capable of being turned in any desired direction, substantially as described and as
illustrated.
Dated this 7th day of August 1894.
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.