Improvements in Vaporizers for Generating Petroleum and other Hydrocarbon Vapours for use in Motors or Engines.
Year: 1891

page_text: Date of Application, 4th Feb., 1891
Complete Specification Left, 2nd Nov., 1891-Accepted, 5th Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in Vaporizers for Generating Petroleum and other
Hydrocarbon Vapours for use in Motors or Engines.
I, ALEXANDER GRAY, of The Mansion, Frognal, London, N.W., Gentleman,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to improve the construction of vaporizers used for
generating petroleum and other hydrocarbon vapours for use in motors or engines.
The methods hitherto in use for obtaining a mixture of air and hydrocarbon
vapour for use in motor engines are those indicated in the Specification of a Patent
No. 11290 in the year 1885.
According to my invention a coil of copper or other metallic tube of small bore
is placed within a metal chamber forming a passage for the exhaust gases from the
engine by which gases the coil is heated to the requisite temperature. At the
upper end of the coil is a funnel mouth into which a spray of fluid hydrocarbon
mixed with air is directed from an atomizer or spray producer. The funnel mouth
may form a cover to one end of the chamber. The mixture of spray and air is
passed through the coil and is therein heated whereby it is converted into vapour--
diluted with hot air. Such diluted vapour is then passed into the explosion chamber
and mixed with a further quantity of air forming an explosive mixture which when
ignited actuates the motor or engine.
Owing to the smallness of the bore of the coil or pipe used considerable friction is
offered to the passage of the air and spray through it and consequently the interior
of the column of air and spray passes forward at a more rapid rate than the exterior
thus bringing all parts of the mixture of spray and air into intimate contact with
the heating surface. Secondly owing to the pipe or tube being in the form of a
coil and the mixture of spray and air passing through it with considerable rapidity
there is a certain tendency for the mixture to fly off at a tangent to its course
thereby causing it to impinge on the peripheral interior surface of the coil.
In order to start the engine the vaporizer must be heated by a lamp or other
suitable means but for this purpose I prefer to employ a second similar vaporizer
of lighter construction which can be heated sufficiently in from 4 to 5 minutes.
Dated this 3rd day of February 1891.
ALEX. GRAY.
COMPLETE SPECIFICATION.
Improvements in Vaporizers for Generating Petroleum and other
Hydrocarbon Vapours for use in Motors or Engines.
1, ALEXANDER GRAY, of The Mansion, Frognal, London, N.W., Gentleman,
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:-
The object of this invention is to improve the construction of vaporizers used for
generating petroleum and other hydrocarbon vapours for use in motors or engines.
The methods hitherto in use for obtaining a mixture of air and hydrocarbon
vapour for use in motor engines are those indicated in the Specification of a Patent
No. 11290 in the year 1885.
According to my invention a coil of copper or other metallic tube of small bore
is placed within a metal chamber forming a passage for the exhaust gases from the
engine by which gases the coil is heated to the requisite temperature. At the

page_text: thinner metal so that it may be quickly heated. It is heated by placing a lamp
below the bottom of the bell or casing of the vaporizer H¹ which is open.
At the same time that mixed air and vapour is admitted to the cylinder of the
engine a further quantity of air is admitted to the cylinder through a separate
valve as is usual in other engines worked by the explosion of gas or vapour
and air.
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. A vaporizer for a motor engine worked by the explosion of petroleum or other
hydrocarbon vapour together with air, in which vaporizer the hydrocarbon is
converted into spray by an atomizer or spray producer and the spray mixed with
air is delivered into a coil of pipe placed within a chamber forming part of the
outlet passage for the exhaust gases from the engine substantially as described.
2. A vaporizer for a motor engine constructed and operating substantially as
described.
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