An Improved Incandescent Tube for Firing the Explosive Charges of Gas and other similar Motor Engines
Year: 1889

page_text: Date of Application, 11th July, 1889
Complete Specification Left, 10th Apr., 1890-Accepted, 10th May, 1890
PROVISIONAL SPECIFICATION.
An Improved Incandescent Tube for Firing the Explosive Charges
of Gas and other similar Motor Engines.
I, HUGH WILLIAMS, of The Mount, Stockport, in the County of Chester, Civil
Engineer, do hereby declare the nature of this Invention to be as follows:-
My invention relates to the highly heated incandescent tubes employed for firing
the charges of explosive fluid mixtures used as the source of motive power in gas and
other similar motor engines.
Such tubes have hitherto been usually formed of iron and as they are exposed
to the action of a very hot flame they soon oxidise and in that state are practically
worthless as the effect of this oxidation of the iron is to prevent the passage of
a large portion of the heat into the interior of the tube. In fact after about thirty
hours of constant use unless the tube be replaced by a 'new one there is great
probability that the tube will cease to ignite the charge.
I have made experiments with a great variety of metals and materials and I find
that a tube made of pure nickel gives wonderfully good results. In making my
improved tubes I prefer to take a solid block or bar of nickel and bore it out so as to
form a tube closed at one end and having the required internal diameter and thickness
of shell.
These improved tubes made of nickel according to my invention are very durable
and far more certain in igniting the charges than the ordinary iron tubes.
Dated this 10th day of July 1889
H. B. BARLOW,
Agent for Applicant.
COMPLETE SPECIFICATION.
An Improved Incandescent Tube for Firing the Explosive Charges
of Gas and other similar Motor Engines.
1, HUGH WILLIAMS, of The Mount, Stockport, in the County of Chester, Civil
Engineer, do hereby declare the nature of this said invention and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement :-
My invention relates to the highly heated incandescent tubes employed for firing
the charges of explosive fluid mixtures used as the source of motive power in gas and
other similar motor engines.
Such tubes have hitherto been usually formed of iron and as they are exposed
to the action of a very hot flame they soon oxidise and in. that state are practically
worthless as the effect of this oxidation of the iron is to prevent the passage of
a large portion of the heat into the interior of the tube. In fact after about thirty
hours of constant use unless the tube be replaced by a new one there is great
probability that the tube will cease to ignite the charge. I have made experiments
with a great variety of metals and materials and I find that a tube made of pure
nickel gives wonderfully good results. In making my improved tubes I prefer to
take a solid block or bar of nickel and bore it out so as to form a tube closed at one
end and having the required internal diameter and thickness of shell.
These improved tubes made of nickel according to my invention are very durable
and far more certain in igniting the charges than the ordinary iron tubes.

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 is :-
An improved incandescent tube for firing the explosive charges of gas and
other similar motor engines said tube being constructed of nickel for the purposes
specified.
H. B. BARLOW,
Agent for Applicant.