Improvements in or connected with the Vapourizers of Oil Engines.
Year: 1899

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PROVISIONAL SPECIFICATION.
Improvements in or connected with the Vapourizers of Oil Engines..
as Drake
We, JAMES ARTHUR DRAKE and ALFRED JAMES FLETCHER, trading
and Fletcher, Mechanical Engineers, of Maidstone, in the County of Kent, ‹ di
hereby declare the nature of this invention to be as follows:
This invention relates to certain improvements in or connected with that class
of engine in' which oil is first introduced into a vapourizer where it is vapourized
and then passed into the engine cylinder together with the necessary proportion
of atmospheric air, which mixture is then fired and exploded in a manner well
understood in connexion with this class of engine..
It is usual to introduce the necessary quantity of oil into the vapourizer as
required by means of a pump which is intermittently actuated and controlled by
some moving part of the engine. And the object of this invention is to provide
means whereby this pump and its accessory parts may be dispensed with. For
this purposes we conduct the oil to be vapourized from the bed or base of the
engine or other tank or reservoir and by a pipe to the vapourizer which is sealed
more or less from the outer-air so that the movement of the piston in the engine
cylinder not only draws in the charge of vapour and atmospheric air but also
tends to create a partial vacuum in the vapourizer, and the necessary quantity-
of oil is thereby drawn into such vapourizer as required. We prefer to provide
a'drain pipe of comparatively small diameter issuing from the lower part of the.
vapourizer and of sufficient length to contain enough vapour to prevent air finding
its way into the vapourizer when the partial vacuuin is formed therein. This
drain pipe and the oil feed pipe are preferably furnished with regulating taps
or valves, and the oil feed pipe may also be provided with a non-return valve so
as to ensure the said pipe being, constantly full of oil.
We, JAMES, ARTHUR DRAKE, and ALFRED JAMES FLETCHER, trading as Drake
and Fletcher, Mechanical Engineers, of Maidstone, in the County of Kent, do;
hereby declare the nature of this invention and in what manner the same is to
[Price 8d.]

page_text: be performed, to be particularly described and ascertained in and by the following
statement:
This invention relates to certain improvements in or connected with that class
of engine in which oil is first introduced into a vapourizer where it is vapourized.
and then passed into the engine cylinder together with the necessary proportion
of atmospheric air, which mixture is then fired and exploded in a manner well
understood in connexion with this class of engine.
It is usual to introduce the necessary quantity of oil into the vapourizer as
required by means of a pump which is intermittently actuated and controlled by
some moving part of the engine. And the object of this invention is to provide
means whereby this pump and its accessory parts may be dispensed with. For
this purpose we conduct the oil to be vapourized from the bed or base of the.
engine or other tank or reservoir by a pipe to the vapourizer which is sealed
more or less from the outer air so that the movement of the piston in the engine
cylinder not only draws in the charge of vapour and atmospheric air but also
tends to create a partial vacuum in the vapourizer, and the necessary quantity
of oil is thereby drawn into such vapourizer as required.
Figure 1 of the accompanying, drawings represents an end elevation of the
vapourizer of an oil engine with the back cover plate removed, and Figure 2 is
a vertical longitudinal section of as much of the cylinder and vapourizer of an
oil engine as is necessary in order to illustrate our invention. a is the vapourizer
into which oil is introduced through the drip pipe b from the oil feed pipe c
which may be provided with any well known form of sight-feed indicator as at d
for example. This oil feed pipe c connects the drip pipe b with the oil supply
either in the bed or base of the engine or in a separate tank or reservoir, as at e
for example (Figure 2) sealed more or less from the outer air. f is a non-return
valve fitted at the lower part of the oil supply pipe, and g is a similar valve fitted
at the upper part thereof, in order to ensure the oil feed pipe c being constantly,
full of oil. We prefer to provide a drain pipe o, (Figure 1) of comparatively
small diameter issuing from the lower part of the vapourizer, furnished with a
suitable regulating valve and of sufficient length to contain enough vapour to
prevent air finding its way into the vapourizer when a partial vacuum is formed
therein by the forward movement of the piston in the engine cylinder.
amount of lift of the valve g, and consequently the amount of oil that is allowed
to pass into the vapourizer a at each forward movement of the piston of the engine
cylinder, is regulated by means of the hollow screwed plug h, the inner end of
which may be made to approach more or less nearly to the valve g by turning
the head or handle to the right hand or left. A groove or recess j is formed
in the outer surface of the hollow screwed plug h, and holes k communicate
between the interior of the hollow plug and the annular chamber formed by
the said groove or recess j, and thence with the pipe c.screwed into the branch 7
of the body or casing m of the regulating valve.
The
It will now be understood that at each forward movement of the piston of the
engine cylinder the partial vacuum which is thereby formed will cause the valves f
and g to rise from their seats, and oil will be drawn up from the oil tank or
reservoir e into the vapourizer a. The continued action of the vacuum will
however cause the valve y to close the end of the hollow screwed plug h, and
thereby prevent more than the predetermined quantity of oil from passing into
the vapourizer a, which quantity will be dependent upon the distance between
the valve g and the lower end of the hollow screwed plug h. The valve
be held in this position until the piston of the engine cylinder commences to
move in the opposite direction, when the valve will fall into its normal position
on its lower seat.
will
It will now be understood that the quantity of oil allowed to pass the valve g
at each forward movement of the piston of the engine may be regulated with
great nicety by turning the head or handle in one direction or the other.

page_text: Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that what
we claim is;-
-
:
First. In oil engines, feeding the requisite quantity of oil into the vapourizer
by the action of the vacuum caused by the movement of the piston of the engine
cylinder, substantially as described.
'
Second. In oil engines, the oil feed apparatus which consists of the oil feed
pipe c, valves. f and g, and regulating plug h, combined, and operating sub-
stantially as described with reference to the drawings.
Third. In oil engines the oil feed pipe c, valves f and g, regulating plug h,
and vapourizer a furnished with a comparatively small but long drain pipe,
substantially as described with reference to the drawings and for the purpose
specified.
Dated this th day of April
UU.
J. A. DRAKE.
A. J. FLETCHER.
Per W. H. Beck, Agent,
115, Cannon Street, London, EC.