Improvements in Hurricane Lanterns.
Year: 1892

page_text: Date of Application, 16th Mar., 1892
Complete Specification Left, 30th May, 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Hurricane Lanterns.
. I WILLIAM LIGHBODY, of the firm of Thomas Rowatt & Sons, of 9, 10, 11
and 12, Radsworth Street, City Road, in the County of London, and of
126, Fountain Bridge, Edinburgh, in the County of Midlothian, Lamp Manu-
facturers, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in hurricane lanterns and has for its
object to provide an improved wind protector or means for preventing the free
access of wind through the space between the globe and air chamber into the said
globe.
In carrying out my invention I employ a perforated plate or screen pivotted and
balanced so that when the globe is tilted the perforated plate is moved to allow the
glass to pass and remains in this position until the globe is returned when the
perforated plate will again fall onto the top of the globe.
The plate or screen instead of being pivotted may be caused to slide upon
vertical wires.
In combination with my plate I advantageously employ a plain or perforated
tube inside the air chamber which tube may be fixed to the perforated plate or
screen or in the air chamber.
Dated the 16th day of March 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Hurricane Lanterns.
I, WILLIAM LIGHBODY, of the firm of Thomas Rowatt & Sons, of 9, 10, 11
and 12, Radsworth Street, City Road, in the County of London, and of
126, Fountain Bridge, Edinburgh, in the County of Midlothian, Lamp Manu-
facturers, 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 hurricane lanterns and has for its
object to provide an improved wind protector or means for preventing the free
access of wind through the space between the globe and air-chamber into the said
globe.
In carrying out my invention I employ a curvilinear or dome-shaped perforated
plate or screen pivotally suspended over the globe and so weighted that, when the
globe is tilted, the perforated plate is moved to allow the said globe to pass and
remains in this position until the globe is returned when the perforated plate will
again fall onto the top of the globe.
In combination with my plate I advantageously employ a plain or perforated
tube inside the air-chamber, which tube may be fixed to the perforated plate or
screen or in the air-chamber.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings, in which :-
Figure 1 is a sectional elevation of a hurricane lantern provided with my
improvements; and,

page_text: Figure 2 is a section on the line, Figure 1, shewing the perforated plate or
screen:
Figures 3, 4 and 5 are elevations shewing different arrangements for carrying my
perforated plate or screen.
Similar letters of reference indicate corresponding parts in the several figures.
« indicates the burner and reservoir of a hurricane lantern, b the globe thereof,
and c the gallery or holder for the said globe, all of which parts are of ordinary
construction.
d indicates my perforated plate or screen designed when the globe is in position,
to lie upon the top of the same in the manner shewn in Figure 1, the said screen
being carried upon pivots e, e adapted to yield vertically to allow the necessary up
and down movements of the said plate or screen when opening and closing the
lantern. As shewn in Figure 1, the pivots e, e are supported by hangers f, f
attached to the head of the lantern, slots h, being provided in which the
pivots e, e can slide during the up and down movements of the plate d.
With this
In order that the plate d shall, when the lamp is opened, assume the inclined
position shewn in Figure 1 so that, during the closing of the lantern, it shall offer
no obstruction to the free movement of the globe, I weight one side of the same.
As shewn clearly in Figure 2 this weight consists of a wire i secured to the said
plate d, the ends of the said wire being bent to form the pivots e, e.
arrangement it will be understood that when, during the closing of the lamp, the
globe b is moved from the position shewn in dotted lines in Figure 1 to that shewn
in full lines, the top of the said globe will impinge against the underside of the
perforated plate and lift the same sufficiently to allow the globe to pass freely
beneath it, and that, when the lamp is closed, the said plate will drop upon the top
of the globe by gravity.
In the modification of my invention shewn in Figure 3, the pivots e, e of the
plate dare carried by vertical rods j, j depending from and adapted to slide freely
through the flange & on the head g of the lantern. I, l are guides, one of which is
arranged in conjunction with each of the rods ; for causing the same to move
vertically.
k
In the modification shewn in Figure 4, I employ rods j, j fixed to the flange k but
instead of suspending the perforated plate d from the said rods by means of pivots e, e
1 pass the said rods through holes in the flange m of the said plate d, the holes being
of sufficient size to allow the plate to move freely thereon.
In the modification shewn in Figure 5 the perforated plate d is represented as
being carried by hinges n, one part of each of which is secured to the head g of the
lantern whilst the other is secured to the perforated plate itself.
Although I have described and illustrated my perforated plate as being weighted
on one side in order that it may assume an inclined position it will be obvious that
the weighting may be effected by pivotting it one side of a diametric line.
o, Figure, indicates a perforated tube in the air-chamber in the head of the
lantern, which perforated tube serves to break up any air currents which enter the
said air-chamber and so prevents them from entering the air-tubes p of the lantern;
it will be obvious, however, that in some cases the perforated tube may be fixed to
the perforated plate.
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. A hurricane lantern having a curvilinear or dome-shaped perforated plate or
screen pivotally suspended above the globe and weighted in such a manner that,
when the globe is tilted, the perforated plate assumes an inclined position and
remains, in this position until the globe is returned substantially as and for the
purpose described.
2. The combination with a hurricane lantern having a perforated screen suspended

page_text: over the top of the globe as described, of a perforated tube inside the air-chamber,
substantially as, and for the purpose, set forth.
3. The manufacture and use of the improved hurricane lantern hereinbefore
described and illustrated in the accompanying drawings.
Dated this 30th day of May 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.