Improvements in Oil Lamps or Lanterns.
Year: 1895

page_text: Date of Application, 15th Jan., 1895
Complete Specification Left, 14th Oct., 1895-Accepted, 4th Jan., 1896
PROVISIONAL SPECIFICATION.
Improvements in Oil Lamps or Lanterns.
GEORGE FREDERICK MATTHEWSON 16 Shirley Terrace, Kirkstead Street,
Hyson Green in the Borough of Nottingham Tin and Copper Smith do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in oil lamps and lanterns, such as are
used by policemen, postmen, bicyclists and for signalling purposes.
And it has for its object more especially improvements whereby the maximum
amount of light is given out, at the same time with the minimum of heat, size and
weight, and it is so constructed that it can be readily taken to pieces for cleaning
purposes. The chimney and ventilator being "paved, knocked up, stamped or
spun" and fitted on to the lamp by means of a bayonet joint and thumb screw.
"
The minimum of heat is gained by a thorough ventilation of the lantern,
especially at the lower part, the air is lead through a number of vents in the
outside cylinder of the lantern, and from thence in the first place through a
number of small holes in the oil cistern, of the lamp, this said cistern having a
false bottom which carries a number of tubes extending vertically and projecting
out at the top of the cistern.
The air coming through these tubes to supply the burner.
And secondly, the air is lead between the inside and outside cylinders of the
lantern.
The oil cistern being held in position by means of a bayonet joint assisted by a
thumb screw.
A rubber or asbestos washer being arranged upon the thumb screw (which screw
turns up the wick) also upon the lever (which lifts up the lamp glass) and presses
against the outside of the lantern so as to exclude all stray beams of light.
Dated this 12th day of January 1895.
GEORGE FREDERICK MATTHEWSON.
Improvements in Oil Lamps or Lanterns.
GEORGE FREDERICK MATTHEWSON 16 Shirley Terrace, Kirkstead Street
Hyson Green, in the Borough of Nottingham Tin and Copper Smith 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 relates to improvements in oil lamps, such as used by policemen,
postmen, bicyclists, and for signalling in the army or navy or for railways &c.,
and it has for its object more especially improvements whereby the maximum
amount of light is given out, at the same time with the mimumen of heat size and
weight, and it is so constructed that it can be readily taken to pieces for cleaning
purposes, the chimney and ventilator being "paved, knocked up, stamped or
spun.

page_text: Fig. 1 Sheet 1 represents the first part of the chimney, this part fastens on to
the lamp by means of a bayonet joint as at A. Fig. 1 and Fig. 2 the vent holes
being at B Fig. 1 and at B Fig. 2 Sheet 2, C Fig. 1 Sheet 1 being a stamping or
casting with a hole at the upper part which is screw threaded to receive the
Screw Fig. 6, Figs. 3 4 & 5 being covers to the ventilator all fastened together by
means of the thumb screw Fig. 6 which screws into C Fig. 1.
The mimumum of heat is gained by a thorough ventilation of the lantern,
especially at the lower part. The air is lead through a number of vents in the
bottom of the cistern as shewn at D Fig. 2 and thense through a number of small
tubes E Fig. 2 in the oil cistern of the lamp, this said cistern having a false
bottom F which carry the tubes E extending vertically and projecting out at the
top of the cistern the air coming through these tubes to supply the burner. Further
ventilation is gained by leading the air through holes as at G Fig. 2 and thense
between the outside and inside cylinders of the lantern firstly through holes in the
inside cylinder to the inside of the lantern as shewn at G Fig. 2 Sheet 2, and
secondly up to the top of the lantern and then outside as shewn at H Fig. 2, thus
keeping the outside cylinder cool.
The oil cistern is held in position by means of a bayonet joint aided by a spring
with a thumb set screw.
A rubber or asbestos washer is arranged upon the thumb screw (for turning
up the wick) which presses against the outside of the lantern so as to exclude all
stray beams of light.
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
1st. A chimney made up of five parts as Figs. 1 3 4 5 & 6 the whole being
unmeltable, and fastened together by the thumb screw Fig. 6 the whole giving
perfect ventilation.
2nd. A cistern with small tubes inserted through it in a vertical direction
extending from the false bottom and projecting out at the top of the cistern as
shewn at E Fig. 2.
3rd. An outside cylinder having a series of holes around the lower part, as at G
Fig. 2 Sheet 2, the air passing between the outside and inside cylinders of the
lantern is lead firstly inside the lantern through a series of holes in the inside
cylinder and secondly up to the top of the lantern and outside as at H. Fig. 2, thus
keeping the outside cylinder cool.
Dated this 12th day of October 1895.
GEORGE FREDERICK MATTHEWSON.