Improvements in Heads or Chimneys for Ships' and other Lanterns.
Year: 1892

page_text: Date of Application, 19th Apr., 1892-Accepted, 21st May, 1892
COMPLETE SPECIFICATION.
Improvements in Heads or Chimneys for Ships' and other Lanterns.
I, ERNST PETERSEN of Neustädter Neuerweg No. 17, Hamburg, Germany,"
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 principally to ships lanterns but it is applicable also to
lanterns in general, and it consists in an improved construction of the chimney or
flue part of the lantern which is generally called the head, by which the lantern
is rendered safe and inextinguishable from draughts or gusts of wind and also
improved in
appearance.
In the drawings annexed hereto,
Fig. 1 is a vertical section of a ship's lantern fitted with the improvement.
Fig. 2 is a horizontal section on line a. a. Fig. 1 and
Fig. 3 is a front elevation of the lantern.
A is the body of the lantern with the lamp L therein, these parts being of
the usual construction are not described herein. The novelty consists in the
head H which differs in its construction from the head usually employed. The
improved head consists of a conical tubular flue R firmly secured to the roof of
the lantern body and narrowing towards its upper end which is open. Surrounding
the orifice of this tubular flue is a cylinder m concentric with the orifice but at a
distance from the circumference of the latter. This distance varies according to
the size and purpose of the lantern. For ordinary ships lanterns it may be one
and a quarter inches. The cylinder is supported and enclosed at the bottom by a
bowl shaped ring resting on and secured to the wall of the flue R, and the upper
end of the cylinder is enclosed by a domed top d fixed thereon. The position of
these parts on the flue R is such that the orifice of the flue is about on a level with
the middle cross plane through the cylinder. The cylinder m is provided with â
number of openings o preferably lying all in the aforesaid middle cross plane and
therefore level with the orifice of the flue R. The bottom ring y is also provided
with perforations ii, it being advantageous to make the openings i larger than the
openings o. On the outside of the flue R may be fixed the lugs p p for the
bail k.
The heated air and products of combustion in the lantern ascend through the
flue and pass out at the holes oo without gusts of outer air being able to blow
down the flue R. A suction of air takes place through the openings oo which not
only assures a supply of air to the flame through the base of the body A, but also
draws in air at the holes ii and facilitates outlet of such air whatever may be the
pressure of the air outside the lantern.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is:-
In a lantern, a head consisting of a conical flue R, a cylindrical cap m
surrounding the orifice of this flue, domed cover d, and inversely domed floor y to
said cylindrical cap m, and having holes o and in said cap and floor
substantially as and for the purpose described.
Dated this 10th dor of Al 1000
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.