Improvements in Lamps.
Year: 1893

page_text: Date of Application, 22nd Apr., 1893-Accepted, 2nd Sept., 1893
COMPLETE SPECIFICATION.
Improvements in Lamps.
I, SARAH PARKER BANCROFT, of 17 Beacon Street, Boston, in the County
of Suffolk and State of Massachusetts, United States of America, Spinster, 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 and accompanying drawings
My invention relates to the construction and arrangement of the several parts
of an oil lamp, said lamp when completed having a similitude of a candle and
arranged to be held in the socket of a candlestick or candelabra.
In the following description reference is made to the figures in the accompanying
drawings, which represent a lamp embodying my invention and in which
Figure 1 represents a side view of the lamp.
Figure 2 is a side view of the cap, burner and chimney with the shade
removed.
Figure 3 is a central sectional view of the flanged step adapted to be held in
the socket of a candlestick, or candelabra, and support the oil font of the lamp.
Figure is a vertical, central, sectional view of the oil font and the burner
supported upon the upper end of the font.
Figure 5 represents a detached perspective view of the collar inclosing the
upper end of the oil font and provided with a screw thread to receive the burner,
lugs for supporting the shade frame and an opening through which the font
is filled.
Figure 6 is a perspective view of the band having a limited rotation upon the
collar supporting the burner, by which the oil hole in the collar is opened and
closed and
Figure 7 is a central sectional view of the band represented in Figure 6.
In the several figures of the drawings I have employed like letters to indicate
like parts.
A denotes a candlestick upon which is supported a lamp embodying the several
features of my invention.
B denotes the supporting step, or device for supporting the oil of the lamp,
said device being shown in central, sectional view in Figure 3 and consisting of a
shallow cup forming a socket B¹ into which the lower end of the candle font is
fitted and within which it is preferably secured by any of the known varieties
of waterproof cement.
The step B is preferably provided with a flange B' and projecting from its under
side are elastic prongs B, slightly divergent and arranged to be compressed so as
to fit tightly within the socket of a candlestick.
C denotes the oil font and consists of a cylindrical tube of porcelain, or other
suitable material, and having its outer surface representing a candle in shape and
color. The lower end of the font C is closed and is held in the cup shaped
socket B¹ of the step B and upon the open and upper end of the font is fitted a
collar D shown in perspective view in Fig. 5 and consisting of a metallic band
with its lower portion cylindrical and fitting the upper end of the font C and
having its upper portion tapering and extending above the end of the font.
The tapered section of the collar is provided with an opening D' through which
oil can be conveyed to the font C and at one side of the opening D' is a narrow
slot D'.
A band E, provided with an opening E' corresponding with the opening D¹, is
placed upon the tapering section of the collar D and a pin E' is held in the
band E forming a handle by which the band is rotated upon the collar, and

page_text: having the inner end of the pin projecting within the band at E³ and entering
the opening D¹ and slot D' and forming a stop to limit the rotation of the band.
The openings E' and D' are so arranged that when the inner end E³ of the pin
is moved into the slot D' the openings will coincide and allow the font to be
filled.
The collar D is provided with an internal screw thread F to receive a screw
threaded burner G provided with a projecting shoulder G¹, overlapping the edge
of the band E and retaining it in position upon the collar D. The band E can be
moved by removing the burner G and turning the band E so as to bring the
inner end E³ of the pin midway the circular opening D' so it will clear the sides of
the circular opening and allow the band E to be lifted from the collar D.
The step B with the oil font C supported therein, can be readily transferred
from one candlestick to another, by means of the elastic prongs B³. The collar D
can be lifted off the open end of the oil font, the burner removed from the collar D
and the band E removed, thereby rendering all parts in contact with the oil, easily
accessible for cleaning, or other purposes.
A shade H is supported upon a frame comprising a ring H¹ attached to the
upper ends of rods H2, which are removably attached to the lower, or cylindrical,
portion of the collar D.
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. The combination of the step B, provided with a cup shaped socket B¹ and
flange B2, elastic prongs B³ and a cylindrical font C having a closed bottom fitting
said cup shaped socket, whereby the font is supported, as and for the purpose set
forth.
2. The combination of the cylindrical font C having its upper end open, a
collar D, fitting the upper end of said font and having a tapered section extending
above the open end of the font and provided with an opening D', a band E held
upon the tapered section of said collar and having a corresponding opening E' and
a burner G held by said collar, as for the purpose set forth.
3. The combination of a cylindrical font C, having an open upper end, a collar D
held upon the upper end of said font and having a tapered section extending above
the end of the font, said tapered section being provided with an opening D₁ and an
internal screw thread F, a band E provided with an opening E¹ and resting upon
the tapered section of the collar, and a burner G held by the screw thread of the
collar D and having a projecting shoulder G extending over the band E, as and
for the purpose set forth.
Dated the 12th day of April 1893.