Improvements in and relating to Lamps.
Year: 1895

page_text: Date of Application, 19th Oct., 1895
Complete Specification Left, 10th Apr., 1896-Accepted, 23rd May, 1896
Improvements in and relating to Lamps.
1, DOUGALD BALLARDIE of 70 York Street, in the City and County of Glasgow,
Lamp Manufacturer, do hereby declare the nature of my invention to be as
follows:-
This invention has reference to improvements in lamps for burning paraffin wax or
like solid hydrocarbons.
My improved lamp would bs constructed all as follows:-
A bowl shaped base vessel would be used to contain the paraffin wax with filling
plug hole near the top and an open endod copper tube would pass through the centre
of the bottom of vessel and extend some distance above its top ond. A portable
slitted tube would have a broad cylindrical dish soldered round it some distance down
from top, and a short cylinder of perforated metal would be soldered to top of dish
rim for the passage of air while a gallery projecting fange would be soldered to
surmount perforated cylinder. An annular wick would be inserted into slitted
central tabo, while a short-perforated tube would be placed round upper part of wick
within central tube, and be formed with a series of notches at vertical spaced distances
apart. A ratchet wheel would be mounted on a horizontal hand turning spindle and
pass through a notch in central tube and engage with the notched rack and thus raise
or lower the wick. A wire would project above flame where it may be coiled, and
extend down past flame and then be coiled round the lower slitted part of wick tube
so as to carry down the heat from the flame to melt the paraffin wax surrounding the
central tube. The aforesaid central tube carrying the wick and gallery would be
mounted over the central tube in bowl shaped hydro carbon reservoir, and a conical
cap with contral opening and lowor Bange would bo mounted over the gallery and
have vertical projecting spring clips round its base to receive and hold the lower end
of glass funnel. This lamp will also serve for heating as well as lighting purposes by
mounting a portable open standard frame above gallery with ring on top above flame
to act as a stand for receiving a kettle or other vessel.
Dated the 18th day of October 1895
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to Lamps.
I, DOUGALD BALLARDIE, of 70 York Street, in the City and County of Glasgow,
Lamp Manufacturer, do hereby declare the nature of my invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement in writing that is to say :—
This invention has reference to improvements in lamps for burning paraffin wax or
like solid hydrocarbons.
And in order that my said invention may be properly understood I have hereunto
appended an explanatory sheet of drawings in which
Figures 1 and 2 represent a sectional elevation and plan view respectively of a
lamp as constructed in accordance with my improvements.

page_text: Figure 8 is a detached view of the wick tube and fittings; and
Figure 4 is an elevation of the stand which would be fitted over the lamp when to
be used for cooking or like purposes.
Referring to these drawings:--
My improved lamp would be constructed all as follows:-
A bowl shaped base vessel A would be used to contain the paraffin wax with filling
plug hole A' near the top, and an open ended copper tube A would pass through the
centre of the bottom of vessel A and extend some distance above its top end.
A portable slitted tube B would have a broad oylindrical dish B¹ soldered round it
some distance down from top, and a short cylinder of perforated metal B' would be
soldered to top of dish rim B' for the passage of air while a gallery projecting
flange Bª would he soldered to surmount perforated cylinder B'. An annular
wick D would be inserted into slitted central tube B while a short perforated tube D'
would be placed round upper part of wick D within central tubo B, and be formed
with a series of notches at vertical spaced distances apart. A ratchet wheel-d
would be mounted on a horizontal band turning spindle and pass through a notch in
central tube and engage with the notched raok d and thus raise or lower the wick D.
A wire E would project above flame where it may be coiled at E' and extend down
past flame and then be coiled at E round tho lower slitted part of wick tube B so'as
to carry down the heat from the flame to melt the paraffin wax surrounding the
central tube. The aforesaid central tube B carrying the wick and gallery would be
mounted over the central tube A' in bowl shaped hydrocarbon reservoir A, and a
conical cap with central opening and lower flange would be mounted over the
gallery B and have vertical projecting spring clips C¹ round its base to receive and
hold the lower end of glass funnel. This lamp will also serve for beating as well.
as lighting purposes by mounting a portable open standard frame a shown. in
Figure 4 above gallery with ring a on top above flame to act as a stand for recoiving
a kettle or other vessel.
Having now particularly described and ascertained the nature of my.said inven-
tion and in what manner the same is to be performed 1 declare that what 1s
dlaim is :-
The constructing of lamps in the improved manner herein described in reference to
and shown in the accompanying drawings.