Improvements in Combustible Liquid and Gas Burners.
Year: 1889

page_text: Date of Application, 20th June, 1889
• Complete Specification Left, 19th Mar., 1890-Accepted, 19th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in Combustible Liquid and Gas Burners.
THOMAS CRADDOCK of No. 50 Epirus Road Walham Green, S.W. in the County
of Middlesex Engineer do hereby declare the nature of this invention to be as
follows:-
It is supplementary of the burner part of my invention (for which see stoves and
kitcheners No. 6707 May 5th 1888). These burners are for burning any combustible
substance that is liquefiable such as pitch resin gas tar and common grease and any
of the liquid and gaseous combustibles.
This supplementary application has for its object the securing of my right in my
own invention and the practical details I here provide to render these burners suit-
able for lamps generating steam in steam boilers or in other ways producing motive
power or other use of value to the public. If the inventor is not entitled to procure
this reward no human being is. After months of every day practical use of this
invention by such demonstration I am justified in asserting this inventor is sound
but as usual practical use leads to simplification of detail. In this case prudense
against accident impelled me to safe guard, as my specification shows.
This practical demonstration of months has given me the safe guards by which on
refering to Drawing sheet 3, and Fig 2 of specification No. 6707 A.D. 1888 I am
able to curtail by relying on the actual details I have used; first I gave up cotton
wick with all the parts marked w which leave p and a these parts require two inches
in depth and the annular outlet for the paraffin which forms the circle of flame is a
mere line it is the substitute for the nipples see drawing sheet 2, and Figs. 1 and 2.
Now the parts marked j. j. j. j. and k. k. k. also i. i. i. and those marked w. to I have
not used in my experiments refered to above, those marked p p I used. The burners
will work well as they are shown; but simplicity dictates my alteration. The simplest
of all that I have used is merely a quarter of an inch brass tube, in this case 4 feet
long with a funnel at the top and a coil made at the bottom, this coil simply rests in
a tin pan 7 inches in diameter and 2 inches deep the paraffin drops from the
regulating tap into the funnel and goes to the coil at the bottom in this coil small
holes are made which serve the same purpose as the nipples, without coke a person
may suppose it was gas burning. This pan stands in the grate, and with coke has
the appearance of a free burning coal fire. In this way I heat soldering-irons and
have burnt a quart of paraffin in one hour. In the above way I have for weeks
used it with and without coke, and the result is that coke will end like the cotton
wick.
Dated this 20th dev of June 1889
THOMAS CRADDOCK.
COMPLETE SPECIFICATION.
Improvements in Combustible Liquid and Gas Burners.
I THOMAS CRADDOCK of No. 50 Epirus Road Walham Green in the County of
Middlesex Engineer 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 :-
This Invention is applicable to a variety of purposes such as locomotives, steam :
ships, cornish and the common boiler, kitcheners, hot houses and warming generally

page_text: as the drawings and explanation show. This Patent is supplementary for the protection
of my right in my (see No. 6707 May the 5th 1888) burners and the improvements
here added thereto, which has adapted them to the table lamp and the steam ship
furnace.
Drawing No. 1 Fig. 1 is a sectional elevation but as the metal is thin it is useless
to use sectional lines, the liquid holder is seen at a from which the liquid passes
through the valve e and enters the burners a. a. by small holes at the bottom of
them. fff indicate air passages and d the metal in which the glass is seated. By the
parts a b, c, h and e liquid poured into the pipe c which is fast to b and the guide h
is fast to a will cause and with it c to float up to the top of a and the liquid to
be burned will pass through the valve e to the burners a. a. The liquid has free
passage all round 6 which as a float is made to keep the liquid at the desired heighth
as long as there is sufficient liquid in the holder to fill the small annular space
between a and b. To show a as the common liquid holder b. c & are removed
and a is raised so that the bottom of it is on a level with e. The burners a consist
of a number of annular grooves with intermediate annular rows of air apertures f.
the burner grooves are tapering in section, becoming, narrower at the bottom where
the liquid fuel enters through small apertures, the fuel burns as it leaves the wider
part of the annular grooves this construction may be suitably modified so long as the
principles of the Invention is retained.
I also employ capiliary attraction as a means of feeding my burners, a mode of
doing so is that the common holder a has within it the actual holder of the liquid.
Between these two vessels there is an annular space of an inch. The diameter of the
now liquid holder determines the quantity of liquid that can be transferred out of
the liquid holder into the annular space from which it goes by the valve e to the
burners a a. The wick descending into the liquid raises it, and as the wick is adapted
to the diameter of the inner vessel but turns down over the top of it the liquid is
delivered into the annular space. The float action serves the purpose of raising or
lowering the liquid in contact with the wick thus diminishing or increasing the
quantity going to the burners a. a in a given time.
Figure 3 shows the burners bottom upwards and the channel that conveys the
liquid into them is in section and the dots indicate the small holes referred to above.
But this is only one of several modifications by which the same practical end is
produced.
burners a. a.
Here
Drawing No. 2. Fig. 1 is a sectional elevation. The burners are here the same as
above the liquid holder is here g and is annular and the annular boiler is m.
are the burners a. a. the glass cylinder around the burner is n. The regulating valve e
is seen in the liquid holder and the liquid goes to the funnel i on its way to the
The parts y are supported on the circular frame j which rests upon two
columns projecting upwards from o on which the whole stands. In one of these
columns the funnel and pipe a are seen this shows the flow of the liquid; by the
glass; the heat is conveyed to the interior of the boiler and chimney. Figs. 2 and 3
show the dish burner it is there annular but may be of any form or size. Tubes here
form the air flues fff but instead of tubes annular tapering grooves with apertures
at the bottom of them may be used as in in Figs. 1 & 2 drawing No. 1, as the liquid
in this case enters at the bottom of the dish g and burns from it.
Drawing No. 3. Fig. 1 is also a sectional elevation. It is so far complete as is
required to illustrate the following points. The burners are at a, a, a, and fff
and represents the boiler which is supposed to be full of water and steam k 2 I
call the kettle its use is to boil say a gallon of water in a few minutes and to protect
the bottom of the oven from becoming too hot whilst the heat not absorbed passes to
oven and boiler. The products of combustion go through ; to the chimney, Fig. 2
is view showing the end of k where the chimney connects to j. Fig. 3 shows the
top of the oven i without the lid through which in the form shown access is obtained
to the oven.

page_text: 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 for general and particular purposes is
The burners for burning combustible liquid and the gas therefrom.
Dated this 3rd day of July 1890
THOMAS CRADDOCK.