Improvements in Oil Lamp Automatic Extinguishers.
Year: 1894

page_text: Date of Application, 14th Sept., 1894
Complete Specification Left, 8th June, 1895-Accepted, 13th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in Oil Lamp Automatic Extinguishers.
We, WILLIAM RICHARDSON, Brownlow Street, Holborn, London, in the County
of Middlesex, Manufacturer, and WILLIAM JACKSON, Garrett Lane, Tooting,
London, in the County of Middlesex, Toolmaker, do hereby declare the nature of
this invention to be as follows:-
This invention relates to improvements in the means employed for extinguishing
the flames of oil lamps, and is applicable to those lamps having sliding shutter
boxes upon the wick tubes.
It consists in the application and attachment to the upper end of the shutter
box of a rounded shape heavy weight, which, when the lamp is overturned, by the
impetus of its motion, shall carry forward the extinguishers so that the shutter
will close over the light. These lumps which form the weights are rounded off
from the centre so as not to interfere with the current of air necessary to feed the
flame. Also we provide that the metal of the shutter box surrounding the wick
tube shall be ribbed or bent so as to diminish the amount of contact surface and
thus to lessen the friction of surface when dirty or greasy.
We are aware that shutter boxes have been weighted before, and used in
conjunction with springs, but such weights have been located at the bottom of the
said boxes, and have thus tended to impede the forward travel or sliding of them,
by their retarding effect upon the wick tubes.
Dated this 13th day of September 1894.
CHARLES T. TOWELL,
Applicants' Agent.
Improvements in Oil Lamp Automatic Extinguishers.
We WILLIAM RICHARDSON, Brownlow Street, Holborn, London, in the County
of Middlesex, 'Manufacturer, and WILLIAM JACKSON, Garrett Lane, Tooting,
London, in the County of Middlesex, Tool-maker, 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 the means employed for extinguishing
the flames of oil lamps, and is applicable to those lamps having sliding shutter
boxes upon the wick tubes.
It consists in the application and attachment to the upper end of the shutter box
of a rounded shape heavy weight, which, when the lamp is overturned, by the
impetus of its motion, shall carry forward the extinguishers so that the shutter
will close over the light. These lumps which form the weights are rounded off
from the centre so as not to interfere with the current of air necessary to feed the
flame. Also we provide that the metal of the shutter box surrounding the wick
tube shall be ribbed or bent so as to diminish the amount of contact surface and
thus to lessen the friction of surface when dirty or greasy.

page_text: We are aware that shutter boxes have been weighted before, and used in
conjunction with springs, but such weights have been located at the bottom of the
said boxes, and have thus tended to impede the forward travel or sliding of them,
by their retarding effect upon the wick tubes.
In order to more particularly explain this our said invention, we have appended
hereunto an illustrative sheet of drawings, upon which are figures and numbers of
reference similar numbers referring throughout the several views to the same thing
or part.
Fig. 1, is a plan view of a lamp burner, embracing this our invention.
Fig. 2, is a part sectional view of the burner on line A-B (Fig. 1).
Fig. 3, is a part sectional view of the burner on line C-D (Fig. 2).
Fig. 4, shows the burner as it appears when tilted or upset.
6, is the body of the burner. 7, 7, are the wick tubes, 8, 8, are the shutters,
9, 9, are the shutter boxes, which are secured to each other by the tie pieces 10, 10°,
or other suitable means. 11, is a lever fulcrumed at 12, whose inner end engages by
means of the slot hole 13, with the tie piece 10, so that the said shutter boxes may
be raised at will for the extinguishing of the light. Any suitable spring such as
shown at 14, may be employed whereby the shutters are readily thrown over or
closed when the boxes are raised sufficiently high.
Upon the inside and upper part of the boxes 9, 9, are attached the weights 15, 15,
which are well rounded as shown. By making these weights of this shape we find
the current of air necessary for the flames is not interfered with. Further, in
some cases we may provide the ribs 16, 16, in the shutter boxes so that in case
any burnt carbon or dust &c. from the wick should find its way between the
tube and the box, its liability to retard the forward motion of the box will be
diminished.
Although we have shown and described this our invention as applied to double
wick lamps, it will be readily seen that it may be equally applied to other lamps,
having a sliding shutter box, or boxes.
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1. In extinguishing mechanism for lamp burners, the combination with the body 6,
wick tube 7, and shutter 8, of the shutter box 9, having the weight 15, at its upper
end, all as shown and described.
2. In extinguishing mechanism for lamp burners, the combination with the body 6,
wick tube 7, and shutter 8, of the shutter box 9, having the ribs 16, 16, and
weight 15, all as shown and described.
Dated this 7th day of June 1895.
CHARLES T. POWELL,
12 Cherry Street, Birmingham, Applicants' Agent.