Improvements in Mineral Oil Lamps for Railway Carriages and for similar Purposes.
Year: 1889

page_text: Improvements in Mineral Oil Lamps for Railway Carriages and for
similar Purposes.
I, THOMAS GILES PUDAN, of Khyber Lodge, Hendford Hill Yeovil in the county of
Somerset, Gentleman, 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 consists of the construction of a Mineral Oil Lamp for Railway
Carriages and similar purposes, in which the container or cistern to carry the oil
surrounds the lamp itself for a certain portion of its height.
The inside of this cistern exposed towards the light of the wick is protected from
the heat of such light or burner by means of a non conducting chamber entirely
covering the exposed area, containing some non-conducting fluid or substance, or the
exposed area may be covered with wood or felt or some non-conducting material or
substance.
A small pipe fitted with a stop cock conducts the oil from the container to the wick,
which is of the usual description. This cock or tap regulates the amount of oil to.
be supplied to the wick.
A continuation of this pipe or some other connection may be made from the burner
to the opposite part of container for the purpose of steadying the burner in the Lamp
as a protection against the oscillations of the Railway carriage.
The whole underneath portion of the Lamp is enclosed by a glass hinged cover
which may be secured by a lock and key or any similar suitable contrivance.
The top portion of Lamp is enclosed with a cover much after the form of an ordinary
Railway Carriage Lamp, with perforations, or louvres, for a proper supply of air
requisite for the burning of the light.
The whole lamp is so made that it can be easily and readily placed in the roofs of
Railway carriages exactly as Lamps are fitted there at present.
For choice I make these lamps circular in plan, but do not restrict myself to any
shape either for plan or elevation. The Lamp is so made that the Oil cistern and
connections are easily removeable from the lantern or surrounding portions of the
lamp.

page_text: In order that the nature of my said improvements may be the more fully understood
1 will now proceed to describe the several figures on the sheet of drawings hereunto
annexed, all of which figures are marked with the like letters of reference
throughout.
Figure 1. is a vertical section according to my improvements in which A is the
metal or glass container or cistern surrounding a portion of the lamp. I propose to
make this container or cistern about " interior dimensions in distanco through, any
necessary depth, and any required diameter for the lamp. B is the non conducting
material surrounding exposed area of oil cistern. C is the pipe for conveying the oil to
the burner. D is the Tap or Cock in pipe C for regulating the supply of oil to the
burner. E is an ordinary lamp burner provided with wick. F is the glass enclosure at
bottom having part hinged, G indicating the hinge and H a lock or other fastening.
K shews the upper part of Lamp in which ventilation is allowed for as in present Lamps
of the kind. L shews Railway carriage.
"
Figure 2 is a section of Oil container or cistern and connection without any
surrounding parts. M shews connecting arm to steady light. As my improvements
are capable of various modifications without departing from the principle thereof, I do
not restrict myself to materials, dimensions, or to the precise form or placement of
the several parts thereof.
Having now fully 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. Mineral Oil Lamp for Railway carriages constructed substantially, as according
to the foregoing Specification, and illustrated by the accompanying drawings.
2: The formation of the cistern containing the Oil of a Lamp for Railway carriages
as hereinbefore described and set forth by accompanying drawings.
Date : L 1
T
1000