Improvements in Self-generating Oil Gas Burners and Furnaces applicable for Lighting or Heating Purposes.
Year: 1894

page_text: COMPLETE SPECIFICATION.
Improvements in Self-generating Oil Gas Burners and Furnaces
applicable for Lighting or Heating Purposes.
I, JAMES JOHNSTON, of 21 North Tay Street, Dundee, in the County of Forfar,
Scotland, Plumber, Brassfounder and Gas Fitter, 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 relates to improvements in self-generating oil gas burners and
furnaces applicable for lighting or heating purposes, such improvements principally
being in connection with the method of supplying oil to the burner. The furnace
is specially applicable for such purposes as the melting of lead or solder, or the
heating of water, soldering bolts and the like.
In order that my invention may be properly understood and readily carried into
effect, I have hereunto appended two explanatory sheets of drawings, in the several
figures of which corresponding parts are marked with the same numerals of
reference.
Figures 1. 2. and 3. (Sheet 1.) represent respectively a side elevation, a view
looking in the direction of the arrow X. (Figure 1.) and a plan of a furnace for
heating soldering bolts and melting lead.
Figure 4. (Sheet 2.) is a section through A. A. (Figure 3.) on an enlarged
scale, and Figure 5. is a cross section of same through B. B. (Figure 4).
The oil from which the gas or vapour is generated is supplied to the reservoir 10.
through the orifice 11. the piston 12. at that time usually being at its lowest
position, that is to say the spring 13. is fully extended. In the drawing, Figure 4,
the piston is shown in the act of being raised and the spring being partially
compressed. As the piston rises the oil will pass through the valve 14. into the
lower portion of the reservoir. As long as the needle valve 15. remains closed no
oil can pass from the reservoir to the coil 16. but when it is opened such oil will be
forced past the valve with a pressure due to the force of the spring 13. acting
through the piston on to the oil. The needle valve is more fully illustrated and
described in my previous Specification of Letters Patent No. 8618, A.D. 1890,
Figures 5. and 6. The valve 14. is kept against its seat by the spring 17; its
force being adjusted by means of the nut 18. 19. is a handle attached to the piston
rod by means of which the piston may be drawn up by hand. 20. is a knob on the
end of the valve spindle for opening the valve when required. In Figure 4.
the knob is shown down and the valve open, while in Figure 1. it is shut. 21. is
the burner, 22. being the hole through which oil or vapour passes. 23. is the
furnace proper, 24. being doors in its side for admitting the soldering bolts,
and 25. are metal projections for the purpose of diffusing the heat. When melting
lead the pot containing it is placed on the top of the furnace. 26. is the framing
which keeps the whole of the parts together, and 27. is the hinged handle by which
the furnace is carried about. Any other known burner such as that illustrated and
described in my previous Specification of Letters Patent No. 8618, A.D. 1890,
may be used in combination with the aforesaid reservoir and needle valve.
In operating the furnace, a suitable oil is first poured into the reservoir 10. and
the piston raised to its highest position. The needle valve 15. is then opened to
allow oil to pass through the coil 16. and out of the hole 22. until a small quantity
gathers in the bottom of the case 28.--suitably provided with air holes 29. and is
then lighted. The flame heats the burner 21. and the coil 16. sufficiently to set
fire to the oil issuing from the hole 22. In a very short time the coil is sufficiently
heated to vaporize the oil which then issues from the hole 22. as a gas, which, as
it burns heats the coil, the metal projections 25, and anything else above it.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
(1.) In self-generating oil gas burners and furnaces the reservoir 10. constructed
substantially as and for the purposes set forth.
(2.) In self-generating oil gas burners and furnaces the combination of the
reservoir 10. with the needle valve 15, substantially as described.
(3.) In self-generating oil gas furnaces, the combination of the reservoir 10.
with the needle valve 15, coil 16. and burner 21, substantially as described.
(4.) In self-generating oil gas furnaces, the combination of the reservoir 10. with
the needle valve 15, coil 16, burner 21, furnace 23, and the metal projections 25,
substantially as described.
(5.) The combination and arrangement of parts constituting my self-generating
oil gas furnace, substantially as hereinbefore described and illustrated.
Dated this 11th day of September 1894.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.