Construction of a Safety Reservoir for Lamps Burning Petroleum or other Volatile Oils.
Year: 1892

page_text: Date of Application, 11th Mar., 1892
Complete Specification Left, 10th Dec., 1892-Accepted, 28th Jan., 1893
PROVISIONAL SPECIFICATION.
The Construction of a Safety Reservoir for Lamps Burning
Petroleum or other Volatile Oils.
JOHN FREDERICK PARKER of Grove Villa, Gravelly Hill near Birmingham,
County of Warwick Chemist, do hereby declare the nature of this invention to be
as follows:
This safety reservoir is so constructed that if accidentally thrown into any
position the oil feeding lamp cannot escape to follow the wick to flame of lamp,
neither can it be over-filled, both being sources of explosions. The first is obviated
by the hollow cone shaped metal placed inside of reservoir, the base or broad part
being at top, this giving a diverting flow to the oil, in case of over-throw of lamp,
acts as a shield to prevent the outflow of the same, and with sufficient inside space
in reservoir being given, no danger can arise from an upset. The incapacity for
over-filling is secured by two outside tubes, one for filling, the other to take away
over-flow. The plan of this reservoir being constructive, not mechanical, is
automatic.
Inside of reservoir I affix a hollow conical shaped piece of metal, the base or
broad part of cone to be at top of said reservoir, and the narrow part of cone
pointing downwards, with an opening in it for wick of lamp to pass into oil. On
the outside of reservoir I affix at a little distance from it two upright hollow metal
tubes entering into said reservoir at the lower part for supplying the lamp with
oil-these two tubes to have each a cap on the top to screw on. When oil is
supplied to this reservoir both of these caps are to be taken off, and the oil poured
into reservoir through one of said tubes, the other tube passes off the expelled air
in reservoir. As a consequence the reservoir cannot be filled to a higher level than
the tops of said two tubes, and therefore can never be over-filled. The narrow or
downward end of aforesaid metal cone placed inside top of reservoir to be a little
above the level of the two outside metal tubes for supplying lamp with oil. This
plan of reservoir, by adding together the lengths of metal cone and that of the
outside metal tubes, and constructing reservoir to this total measurement in length,
with sufficient space inside reservoir to hold oil-in case of over-turning will avoid
the possibility of its outward escape in whatsoever way or position the lamp may
be accidentally over-turned or lie; thus preventing the dangers of explosions from
oil following wick of lamp when in use to the point of combustion; and likewise
the same danger from over-filling. When supplied with oil both caps to be screwed
on the two-outside tubes before lighting lamp.
Dated this 10th of March 1892.
JOHN FREDERICK PARKER,
Grove Villa, Gravelly Hill, near Birmingham, Warwickshire.
COMPLETE SPECIFICATION.
The Construction of a Safety Reservoir for Lamps Burning
Petroleum or other Volatile Oils.
JOHN FREDERICK PARKER Grove Villa, Gravelly Hill near Birmingham in
the County of Warwick Chemist 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 :-
Inside top of metal reservoir A I affix a metal cone B through which wick passes
into the oil, narrow end of cone being downwards; and outside reservoir two curved

page_text: tubes D with screwed caps for supplying reservoir with oil, one cap to be taken off
whilst so doing, giving outside observation-and void or extra space C allowed in
reservoir in order to receive over again the oil holding capacity; this and the two
outside tubes, and bottom of cone being made on a level with top parts of outside
tubes constitute the features of novelty claimed. By this principle of construction
no outflow of oil can take place if accidentally the lamp should be upset, in whatever
position it may lic. Both caps to be placed on outside tubes before lighting.
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 :
The two outside metal tubes with screwed tops-also the attainment of level of
the lower end of cone inside reservoir with the tops of outside metal tubes-and
also the arrangement of extra or void space in reservoir to contain over again the
oil the lamp can receive on this principle of construction.
Dated this 9th day of December 1892.
JOHN FREDERICK PARKER.