Improvements in Air-spreaders for Paraffin Lamps.
Year: 1889

page_text: Date of Application, 19th Nov., 1889
Complete Specification Left, 19th Aug., 1890-Accepted, 20th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in Air-spreaders for Paraffin Lamps.
We ISAAC SHERWOOD Junr. and FREDERICK SHERWOOD trading as Isaac Sherwood
and Sons of 44 to 50 Granville Street, Birmingham in the County of Warwick Lamp
Manufacturers, do hereby declare the nature of this invention to be as follows :-
The object of this invention is to increase the lighting power of paraffin lamps, by
means of an improved air spreader constructed as hereinafter described and illustrated
by the accompanying drawing.
The air spreader is circular on plan to suit the circular burner it is constructed
of 6 hole perforated brass; the sides A are of the shape of an inverted cone and
are of sufficient height to allow the proper quantity of air to pass; the top B is
flat and perforated, thus forming a kind of inverted perforated box, on the top of
which and about one quarter of an inch from it, is placed the usual solid air
spreader, C, the said solid air spreader being fixed to the top of the perforated box
by means of a suitable pin.
Thus it will be perceived that the air spreader consists of an inverted conical box
perforated at the top and sides, with a solid spreader placed about one quarter of an
inch above the top of the conical box, as illustrated in the accompanying drawing.
Dated this 18th day of November 1889.
ISAAC SHERWOOD, JUNR.
FREDERICK SHERWOOD.
Per J. J. Raggett,
Agent.
COMPLETE SPECIFICATION.
Improvements in Air-spreaders for Paraffin Lamps.
We ISAAC SHERWOOD Junr. and FREDERICK SHERWOOD trading as Isaac Sherwood
and Sons of 44 to 50 Granville Street Birmingham, in the County of Warwick Lamp
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:-
The object of this invention is to increase the lighting power of paraffin lamps by
means of an improved air spreader constructed as hereinafter described and illustrated
by the accompanying drawing.
.
The air spreader is circular on plan to suit the circular burner it is preferably
constructed of 6 hole perforated brass; the sides A are of the shape of an inverted
cone and are of sufficient height to allow the proper quantity of air to pass; the
top B is flat and perforated, thus forming a kind of inverted perforated hox, on the
top of which and about one quarter of an inch from it is placed the usual solid air
spreader, C, the said solid air spreader being fixed to the top of the perforated box by
means of a suitable pin.
Thus it will be perceived that the air spreader consists of an inverted conical box
perforated at the top and sides, with a solid spreader placed about one quarter of an
inch above the top of the conical box, as illustrated in the accompanying drawing.

page_text: 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
claims is :-
An Air Spreader for Paraffin Lamps constructed substantially as hereinbefore
described and illustrated by the accompanying drawing.
Dated this 18th day of August 1890.
ISAAC SHERWOOD, JUNR.
FREDERICK SHERWOOD.
Per J. J. Raggett,
Agent.