Year: 1888

page_text: Date of Application, 23rd Apr., 1888
Specification Accepted, 9th Nov., 1888
improve u
I JAMES YATE JOHNSON of 47 Lincoln's Inn Fields in the County of Middlesex
Gentleman do hereby declare the nature of this Invention which has been com-
municated to me from abroad by Charles Stanford Upton of 25 Warren Street New
York in the County and State of New York United States of America Merchant 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 principally to those lamps in which a central draught tube
passes entirely through the burner and font and is surmounted by a cone or thimble
perforated to supply air evenly to all parts of the flame.
The invention relates firstly to an improvement in the means of connecting the
draw bar or wick raising rod to the ring or band which carries the wick; secondly
to improvements in the perforated cone or thimble which is made with an outwardly
swaged bead to rest on the top of the central draught tube, and with a deflecting cap
on top; thirdly to improvements in the pan or font-receptacle which has a hole in its
bottom made to correspond to the central draught tube of the font, an upturned
flange to retain the oil surrounding the said hole, and other holes in its sides to supply
air around the font and cool it.
The Drawings exhibit two slightly different forms of draw bar or wick raising rod.
Figures 1 and 2 are vertical sectional views of lamps having the invention applied
thereto.
Figures 3 and 4 are horizontal sectional views of the two lamps shown respectively
in Figures 1 and 2.
Figure 5 is a sectional view illustrating another form of draw bar connection.
The main body or font 1 has fixed to it the central draught tube 2 between which
and tube 3 is placed the wick 4. Surrounding the tube 3 is the shell 5 provided with
numerous perforations which supply, air to the inside of the shell 5 and so to the out-
side of the flame. The wick 4 is carried by an inner and an outer ring or band 6, 7,
the latter being sufficiently small in diameter to firmly clasp the wick onto the former.
From either of these bands projects a tongue 8 which has a pivot pin 9.
10 is a rod which passes up through the top of the font 1 and is pivoted on the
pin 9. The rod 10 may be bent outwardly as shown in figure 1 so as when drawn up
to assume the position shewn in dotted lines or it may be joined to the pin on part 8

page_text: by means of a horizontal projection 11 as shown in figure 2. In the latter case, the
rod will rise in a substantially vertical path. The first form is convenient where by
reason of a projecting bracket or shade support it is desirable to have the top of the
rod recede from the lamp as it is drawn out.
The hinging of the rod to the wick carrying rings in the manner shown is an
important improvement as it prevents binding of the rod when the wick is raised or
lowered.
In figures 3 and 4 the forms given the guides in the font top are shown for the
two different styles of draw bar or wick raising rod. In both cases the guide opens
into the wick aperture of the lamp so as to allow the withdrawal of the wick and
draw bar together but the form of draw bar shewn in figure 1 obviously requires a
much smaller guide than that shewn in figure 2:
In figure 5 I have shewn a modification in the form of the wick raising rod or
draw bar wherein the latter is bent downward and then upward for its attachment to
the wick ring. The bend thus provided in the wick rod enables the wick ring to be
drawn partially out of the lamp if occasion requires without entirely lifting out the
draw-bar.
An important modification of the form of the cone 12 is made by forming it with
an outwardly turned head at 13 to rest upon the top of the inner draught tube and
prevent oil passing from the wick down into said tube. The cone is not only
perforated on its side as shewn but the bevelled surface at 14 is also provided with a
line of perforations and the cone is surmounted by a cap.15 which is turned upward
at 16. Such a cap is effectual'in spreading the flame.
When the font 1 is placed in a pan or receptacle 17 (see figure 2) such pan is made
with a central hole 18 in its bottom to which air flows through perforations 20. An
upturned flange 19 around the hole 18 retains any oil which passes. down the tube 2:
Air passes through' the holes 21 in the sides of the pan 17 and cools the oil in the
Jamp.
Having now particularly described and ascertained the nature of this Inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
First. In or for oil lamps a wick ring with a draw bar or wick raising rod pivoted
thereto substantially as herein before described.
Second. In oil lamps an outwardly bent or curved wick raising rod arranged sub-
stantially as hereinbefore described.
Third In oil lamps a wick rod provided with a down-turned portion substantially
as shewn in Figure 3.
Fourth. A cone or thimble for a central draught lamp having an outwardly
turned head to rest upon the central draught tube for the purposes set forth.
Fifth. The combination with the cone or thimble of a central draught lamp of a
bevelled portion at top with a cap fixed to the said top and projecting outward beyond
the same substantially as set forth.
Sixth. A pan or receptacle for a lamp font having holes for the passage of air as
and for the purpose herein before described and illustrated.
Seventh. A pan having a hole in its bottom surrounded by a flange for retaining
oil as hereinbefore described and illustrated.
Dated this 22nd day of Annil 1888