Improvements in the Means for Supplying the Wick in Lamps and Lanterns with Paraffine Oil or other Liquid.
Year: 1891

page_text: Date of Application, 19th May, 1891
Complete Specification Left, 12th Feb., 1892-Accepted, 19th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Means for Supplying the Wick in Lamps
and Lanterns with Paraffine Oil or other Liquid.
We, JAMES BOURNE COWDY of Sidcup Villa, Sidcup, in the County of Kent,
Merchant and JOHN ALEXANDER SAMUELS of 34 Gladstone Road, Wimbledon,
in the County of Surrey, Lamp Maker do hereby declare the nature of this
invention to be as follows:-
This invention relates to lamps or lanterns having a separate or upper oil supply
vessel. For the purpose of feeding the oil to the wick or wicks we connect the said
supply vessel with the wick reservoir or reservoirs by means of a syphon and a pipo
provided with a small float chamber or the latter forms part of the said pipe. The float
working therein is by a rod or wire connected to a tubular or other valve which
when the float rises sufficiently high in the chamber or pipe closes the lower end
of the long leg of a syphon pipe the short leg of which reaches down into the
aforesaid upper oil supply vessel; a small branch pipe is provided for forming
the starting vacuum in the syphon. Instead of the syphon with valve operated by
the float we may provide a small aperture or pipe connection between the float
pipe or chamber and the upper supply vessel and a valve which directly or indirectly
is operated by the float. As the float rises the valve is closed thus stopping the
feed, and as the float falls the valve is opened thus allowing the syphon to act or
the flow to take place in the aforesaid small pipe connection.
Dated this 19th day of May 1891
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
COMPLETE SPECIFICATION.
Improvements in the Means for Supplying the Wick in Lamps
and Lanterns with Paraffine Oil or other Liquid.
We, JAMES BOURNE COWDY of Hatherly Road, Sidcup, in the County of Kent,
Merchant, and JOHN ALEXANDER SAMUELS of Kingston Road, Wimbledon, in
the County of Surrey, Lamp 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 lamps and lanterns having a separate or upper oil supply
vessel. For the purpose of feeding the oil automatically as required to the wick
or wicks we connect the said supply vessel with the wick reservoir or reservoirs by
means of a syphon and a pipe provided with a small float chamber or the latter
forms part of the pipe. The float working therein is by a rod or wire connected
to a tubular valve containing oil into which the long leg of the syphon dips, the
short leg of same reaching down into the oil in aforesaid upper oil supply vessel,
the action being such that the rise and fall of the float regulates the filling and
overflowing of the tubular valve and the supply to the wick chamber by the syphon,
that is to say, by the difference in the level in the supply vessel and in the tubular
valve.
The accompanying drawing is a vertical section through an apparatus constructed
according to this invention. A indicates the upper oil supply vessel for the lamp
or lantern and B indicates the wick reservoir to be supplied with oil. C is a pipe
the lower part of which forms a float chamber. The pipe C is connected to the
vessel A by a syphon pipe dipping with one leg D into the oil in the vessel A and

page_text: with the other leg D' into a tubular valve G which by a wire F is connected to a
float E capable of working up and down in the lower part of the pipe C. The
syphon pipe D D' is fixed in the cover H which is unscrewed when the supply
vessel A, the tubular valve G, and the wick reservoir B at starting are charged
with oil. D² is a small pipe for letting off any over pressure of air in the pipe C.
As the oil is consumed by the wick or wicks the float E sinks whereby the level of
oil in the tubular valve G as compared with the level of the oil in A is lowered
and the oil from the supply vessel A flows over more readily into the syphon
pipe D D and flows over the top of the tubular valve G. On the other hand
when the float rises to the height shown (or even so as to close the outlet of the
leg D') the level of the oil in the tubular valve G thus rising relatively to that of the
level of the oil in A and checking or stopping the syphon action. The guide I for
the wire F forms also a stop or limit to the descent of the tubular valve G.
Provisional Specification we have named a small branch pipe fitted to the syphon
for forming the starting vacuum, but we do not find this requisite if the vessel B
and valve or bucket G as well as the supply vessel A are charged with oil at
starting.
In our
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is:-
1. In apparatus for automatic oil supply to the wick reservoir in lamps or
lanterns the application and use of a syphon having its short leg dipping in an
upper oil supply vessel and its longer leg in a tubular valve which is connected to
a float in or communicating with the wick chamber the syphon acting in such manner
that the rise and fall of the float and consequent variation of oil level in the supply
vessel and in the tubular valve regulates the filling and overflowing of the tubular
valve and the supply to the wick chamber by the syphon substantially as set
forth.
2. The construction of automatic oil feed apparatus for lamps and lanterns as
described with reference to the accompanying drawing.
Dated this 12th day of February 1892.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.