Improvements.in or connected with Lamps for Burning Hydro Carbon Oils for Lighting Purposes.
Year: 1891

page_text: Date of Application, 17th June, 1891
Complete Specification Left, 17th Mar., 1892-Accepted, 23rd Apr.. 1892
PROVISIONAL SPECIFICATION.
Improvements.in or connected with Lamps for Burning Hydro
Carbon Oils for Lighting Purposes.
I, CHARLES DIXON ARIA of 2 Duke Street Mansions Duke Street Grosvenor
Square in the County of Middlesex Lamp Manufacturer do hereby declare the
nature of this invention to be as follows:-
My invention relates to improvements in that class of lamps in respect of which
Letters Patent were granted to me dated the 22nd day of November 1887 No. 16073
and the 1st day of November 1888 No. 15768 and in which an hermetically closed
main reservoir suppplied oil by gravity to an open secondary reservoir placed at a
lower level and into which depended the wick tube and which lamps were more
especially designed to burn heavy hydro carbon oils.
In this class of lamp as heretofore constructed the main reservoir was provided
upon its under side with a filling orifice closed by a stopper and it was consequently
necessary to invert the same in order to fill it and this was a process both trouble-
some and productive of many difficulties that it is unnecessary to enumerate and
furthermore lamps so constructed were required to be held in a vertical or approxi-
mately vertical position whilst either in or out of operation otherwise their contents
were liable to be spilled as there were no means of cutting off or regulating the
supply of oil to the secondary reservoir.
Now the object of my present invention is to enable the main reservoir to be
filled from the top and to provide means for cutting off or regulating the supply of
oil to the secondary reservoir.
For this purpose I provide the top of the primary or main reservoir with a filling
orifice closed by a screw stopper or valve and I place within the supply pipe that is
to say the pipe supplying the secondary reservoir from the primary reservoir a cock
or valve consisting of a vertical cylinder closed at the bottom but open at the top
and provided with an opening at one side into which the supply pipe from the
primary reservoir leads and a similar opening at the opposite side from which leads
a short length of pipe to the secondary reservoir.
Into this cylinder I introduce a closely fitting but moveable cylinder or plug
closed at both ends or provided with a small air hole at the top and formed with
openings in its sides corresponding with those of the fixed cylinder and I provide
this cylindrical plug with a key or milled button by which it may be turned.
By these means am enabled to fill the primary reservoir at the top whilst the
lamp is in its normal position, to cut off the supply of oil to the secondary reservoir
when the lamp is being transported from place to place and to regulate the supply
thereto when the lamp is burning and thereby to prevent the accidental spilling of
the oil.
Dated this 17th day of June 1831.
не той
WHITE & WOODINGTON,
27, Southampton Buildings, London, Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Lamps for Burning Hydro
Carbon Oils for Lighting Purposes.
I, CHARLES DIXON ARIA of Broad Street House Broad Street in the City of
London formerly of 2 Duke Street Mansions Duke Street Grosvenor Square in the
County of Middlesex Lamp Manufacturer 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:-
My invention relates to improvements in that class of lamps in respect of which
Letters Patent were granted to me dated the 22nd day of November 1887 No. 16073
and the 1st day of November 1888 No. 15768 and in which an hermetically closed
main reservoir supplied oil by gravity to an open secondary reservoir placed at a
lower level and into which depended the wick tube and more especially designed to
burn heavy hydro carbon oils.
In this class of lamp as heretofore constructed the main reservoir was provided
upon its under side with a filling orifice closed by a stopper and it was consequently
necessary to invert the same in order to fill it and this was a process both trouble-
some and productive of many difficulties that it is unnecessary to enumerate and
furthermore lamps so constructed were required to be held in a vertical or approxi-
mately vertical position whilst either in or out of operation otherwise their contents
were liable to be spilled as there were no means of cutting off or regulating the
supply of oil to the secondary reservoir.
Now the object of my present invention is to enable the main reservoir to be filled
from the top and to provide means for cutting off or regulating the supply of oil to
the secondary reservoir.
For this purpose I provide the top of the primary or main reservoir with a filling
orifice closed by a screw stopper and I place within the supply pipe that is to say
the pipe supplying the secondary reservoir from the primary reservoir a cock or
valve consisting of a vertical cylinder closed at the bottom but open at the top and
provided with an opening at one side into which the supply pipe from the primary
reservoir leads and a similar opening at the opposite side from which leads a short
length of pipe to the secondary reservoir.
Into this cylinder I introduce a closely fitting but moveable cylinder or plug
closed at the bottom but provided with a small air hole at the top and formed with
openings in its sides corresponding with those of the fixed cylinder and I provide
this cylindrical plug with a key or milled button by which it may be turned.
By these means I am enabled to fill the primary reservoir at the top whilst the
lamp is in its normal position to cut off the supply of oil to the secondary reservoir
when the lamp is being transported from place to place and to regulate the supply
thereto when the lamp is burning and thereby to prevent the accidental spilling of
the oil and furthermore the cylinder acts as a trap to prevent a too sudden influx
of oil to the secondary reservoir.
And in order that the said invention may be more clearly understood and readily
carried into effect I will proceed aided by the accompanying drawings more fully to
describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure is a sectional elevation of a hanging lamp having my invention applied
thereto.
Figure 2 is an elevation drawn to an enlarged scale of the regulating device
separately.
Figure 3 is a plan thereof.
Figure 4 is a vertical section taken on the line 1-1 of Figure 3 and
Figure 5 is a horizontal section taken on the line 2-2 of Figure 4.

page_text: Figure 6 is a similar view to Figure 4 illustrating a slight modification, and
Figure 7 is a horizontal section thereof taken on the line 3-3 of Figure 6.
In the several figures of the drawings like parts are indicated by similar letters:
of reference.
As the general features of this class of lamp are now well known or can readily
be ascertained upon reference to the Specifications of the hereinbefore recited
Letters Patent, the principal parts thereof only are lettered and no general
description thereof is given herein except so far as the present improvements are
affected thereby.
Referring to Figures 1 to 5 a represents the primary reservoir represents the
secondary reservoir, and c represents a pipe or tube connecting the primary reservoir a
with the secondary reservoir bas is well understood.
According to the present invention the primary reservoir a is provided with a
filling orifice at the upper part thereof closed by a screw stopper a¹ by the aid of
which it may be filled from the top instead of inverting the lamp and filling it from
the bottom as heretofore, thereby greatly adding to its convenience in use.
Within the pipe cjsupplying the secondary reservoir 6 from the primary reservoir a
is placed a cock or valve consisting of a vertical cylinder d closed at the bottom
thereof, but open at the top, and provided with a way or opening at one side into
which the supply pipe c from the primary reservoir a leads and with a similar
opening d² at the opposite side from which leads the supply pipe c communicating
with the secondary reservoir b.
Into the fixed cylinder d is introduced a closely fitting but moveable cylinder or
plug e closed at the bottom and also at the top with the exception that it is
provided with a small air hole e³ thereat and formed with openings e¹ and e² in its
sides corresponding with those d' d² of the fixed cylinder d.
The cylinder or plug e is provided with a thumb piece or handle e* or it might
be with a key or milled button, by the aid of which it may be turned whilst the top
flange of the cylinder or plug e is formed with a peripheral recess e¹ therein as shown
more particularly at Figures 2 and 3 through which passes a screw stud d³ which
screws into the top of the cylinder d and acts as a stop to arrest the rotation of the
cylinder e at either of its extreme positions that is to say on or off whilst the head
of the stud d³ which overlaps the top of the cylinder or plug e serves to hold the
same in position with capability of easy removal.
By these means the primary reservoir a may be filled at the top whilst the lamp
is in its normal position as the supply of oil therefrom to the secondary reservoir b
may be cut off by the regulating device or cock hereinbefore described and in a
similar manner the supply may be cut off when the lamp is being transported from
place to place and thus any sudden influx of oil to the secondary reservoir band the
risk of the same spilling is avoided.
In addition to cutting off the supply from the primary reservoir a to the secondary
reservoir b as lastly hereinbefore described the cock or regulating device also serves
to regulate the supply of oil to the secondary reservoir 6 when the lamp is burning
as the way or opening e' in the cylinder or plug e becomes scaled by the oil rising
therein, very much in the same manner as the supply opening to the secondary
reservoir is sealed by the oil contained in the latter, and this regulating device
therefore acts as an additional check to prevent any sudden flow of oil to the
secondary reservoir b.
In the example given at Figures 6 and 7 that part of the supply pipe c leading
from the primary reservoir a to the cylinder d of the regulating device is formed
with two ways or conduits, and the fixed cylinder d and moveable cylinder or plug e
are correspondingly formed with two ways or openings d' e¹ by which means a freer
flow of oil is obtained from the primary reservoir a to the cylinder or plug e.
It might sometimes happen that when the cylinder or plug e is turned off the oil
if a little less heavy than usual might find its way up between the cylinders a and e
and flow out at the top of the cylinder d but in order to obviate any risk of this
kind a small relief way is provided in the plug or cylinder e, and which when the

page_text: latter is turned off is in alignment with one of the supply ways of the tube e leading
from the primary reservoir a and thus allows a slight leakage into the cylinder or
plug e and thereby relieves the pressure upon the exterior thereof.
In some cases in lieu of forming an airhole e3 in the top of the cylinder or plug e
such air hole may be dispensed with and the cylinder or plug may be formed
completely closed at the top, but the former is the preferred arrangement.
Although I have herein shown and described my invention in connection with a
hanging lamp I would have it understood that it is equally applicable to railway
roof and other kinds of lamps possessing the characteristic features hereinbefore
pointed out.
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 :-
1. In a lamp of the character hereinbefore referred to, the combination of a
primary reservoir provided with a filling orifice at the upper part thereof a secondary
reservoir and a cock or regulating device located in the pipe supplying the secondary
reservoir from the primary reservoir substantially as herein shown and described
and for the purpose stated.
2. In combination with a lamp of the character hereinbefore referred to a
regulating device located in the pipe supplying the secondary reservoir from the
primary reservoir and consisting of a cylinder closed at the bottom but open to such
supply pipe and to the atmosphere substantially as herein shown and described and
for the purpose stated.
Dated this 17th day of March 1892.
WHITE & WOODINGTON,
27, Southampton Buildings, London, Agents.