IMPROVEMENTS IN PETROLEUM LAMPS
Year: 1884

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake, and Co Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of my invention for "IMPROVEMENTS IN PETROLEUM LAMPS
"
to be as follows:-
This invention relates to petroleum lamps and comprises improved means for
supplying the air for supporting combustion and a new arrangement for moving
the wick.
In order to give to the flame an uniform whiteness over the entire length, I
employ a perforated disc above which a knob or button of smaller diameter than
the said disc is placed, both the said parts being mounted upon a suitable support.
The said knob or button, upon its lower side, is of such form as to direct the air
which passes through the perforations of the disc, into the upper portion of the
flame.
The air which enters the burner through a fixed tube passing through the lamp
is divided into two portions one of which, deflected by the disc, comes into contact
with the flame immediately above the wick, whilst the other portion passes through
the perforations in the said disc and is directed by the said knob or button into the
upper portion of the flame, in order to complete the combustion of the gases.
In order to move the wick, I employ a movable tube into which the wick is
inserted. This tube is slipped over the fixed air tube. Points or projections at the
upper end of the said tube prevent the wick from slipping down therein. The
wick-tube is provided along the entire length with four corrugations which serve
as guides, and at the same time as feeding channels, for the wick. One of these
corrugations is perforated with holes thus forming a rack, with which an actuating
pinion engages for raising and lowering the wick.
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: TO LIIS Invention.
Figures 2 to 6 are views of details hereinafter referred to.
In order to obtain a regular and uniform movement of the wick, a special wick-
holding tube D, figures 1, 2, 3, and 4 is employed. This wick-holder lias attached
-to-it-points-or-gripers-H-for-retaining the wick, and is formed with vertical-
channels E for facilitating the feed of combustible liquid to the burner. One of
these channels is perforated and forms a rack G, Figures 1, 2, and 3, in which
engages a pinion G³ actuated by the shaft G². The channel diagonally opposite to
the rack G serves as a guide for the tube D, figure 5. The gripers H of the wick-
holder D, which maintain the wick in position, are either rivetted upon the tube D,
or attached as shown in Figure 2. They form springs, and, when the wick-covering
tube C, Figures 1 and 4, is removed (as in Figures 2 and 3), they spring outwards
from the tube D, so that the wick can easily be removed.
If the wick-covering tube C is placed upon the tube D, as shown in Figures_1
and 4, the gripers H are pushed into the notches I (Figures 2 and 3) in the tube D,
penetrating the wick and maintaining the same in position.
This arrangement of the gripers H has a very important advantage, that is to
say, the spring gripers H, by bearing frictionally against the interior of the wick-
covering tube C, support a portion of the weight of the wick-tube and wick, so
that their entire weight is not supported exclusively by the pinion upon the
shaft G².
In order to distribute the air for supporting combustion, a disc M, Figures i
and 6, is employed. This disc is perforated with small holes i and surmounted by
a knob or button N of particular form and of smaller diameter than the disc M.
The current of incoming air is thus divided into two parts. The portion which is
stopped by the disc M being conveyed to the flame at lower part of the latter, while
the other portion which is strongly heated by its passage through the holes i of the
disc, by reason of the particular form of the knob N, is directed to the flame at a
higher point in order to complete the combustion of the gases. By this arrange-
ment, assisted by the form of the chimney, a flame is obtained, the entire length of
which is of extraordinary whiteness and has the form of a tulip contracting above
the knob N and ceasing only at the centre of the chimney or glass.
This latter peculiarity has the effect of obviating almost entirely the cracking of
glasses.

page_text: Having now particularly described and ascertained the nature of my sai l
Invention, and in what manner the same is to be performed, I declare that what
I claim is
First. A Wick-holding tube D provided with gripers H springing outwardly,
channels E for facilitating the feed of liquid to the wick, and a rack and pinion
for the movement of the wick, in combination with a wick-covering tube C,
substantially as described with reference to the drawing, for the purpose specified.
Second. A disc M perforated with holes i and surmounted by a knob Ñ, for the
purpose of dividing into two portions and partially heating the air for supporting
combustion, the whole constructed and arranged substantially as described with
reference to the drawing.
OKAL 1
1007
HASELTINE, LAKE & Co.,
For the Applicant.