Improvements in the Means for Regulating the Temperature of Evaporators of Petroleum Engines.
Year: 1891

page_text: Date of Application, 14th Nov., 1891
Complete Specification Left, 6th Aug., 1892-Accepted, 10th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Means for Regulating the Temperature of
Evaporators of Petroleum Engines.
I JAMES YATE JOHNSON of 47 Lincolns Inn Fields in the County of Middlesex
Gentleman do hereby declare the nature of this invention, which has been com-
municated to me from abroad by Carl Pieper, of Berlin, Kingdom of Prussia,
Patent Agent, to be as follows:-
This invention relates to evaporators of petroleum-engines heated by an outer
flame, and the inside whereof is in direct communication with the combustion-space
of the engine, and which evaporators operate to ignite the working charge. The
object of the improvement is to regulate the temperature of the evaporator auto-
matically, so that the ignition of the charge of the engine always takes place at the
required moment, though the explosions follow each other irregularly, provided,
however, that the speed of the engine and the quantity of air and petroleum-vapour
drawn in by the same be uniform, or nearly so.
For this regulation the inventor utilizes the expansion and contraction, or
variations in the length of the evaporator, due to variations in the temperature
thereof, the said variations of length being transmitted by suitable intermediate
parts to a valve that controls the feed of fuel, such as the flow of petroleum from
an elevated reservoir, to a burner by which the evaporator is heated.
The valve-operating parts may consist in two levers, one pressed by a spring
against the outer end of the evaporator, while the other lever is inserted between
the operative end of the former and the valve, the levers being so arranged that,
when the evaporator expands, the valve will be pushed towards its seat to reduce
the flow of petroleum, whereas when the evaporator contracts, the valve will be
caused to move away from its seat so as to allow more petroleum to pass.
Dated the 14th day of November 1891.
J. H. JOHNSON & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in the Means for Regulating the Temperature of
Evaporators of Petroleum Engines.
I JAMES YATE JOHNSON of 47 Lincolns Inn Fields in the County of Middlesex,
Gentleman, do hereby declare the nature of this invention (which has been com-
municated to me from abroad by Carl Pieper of Berlin, Kingdom of Prussia,
Patent Agent) 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 evaporators of petroleum engines heated by an outer
flame, and the inside whereof is in direct communication with the combustion-space
or chamber of the engine, and which evaporators operate to ignite the working
charge. The object of the improvement is to regulate the temperature of the
evaporator automatically, so that the ignition of the charge of the engine always
takes place at the required moment though the explosions follow each other
irregularly, provided however, that the speed of the engine and the quantity of air
and petroleum-vapour drawn in by the same be uniform, or nearly so.
To effect this regulation the inventor utilizes the expansion and contraction, or
variations in the length of the evaporator, due to variations in the temperature
thereof, the said variations of length being transmitted by suitable intermediate
Prine 27

page_text: parts to a valve that controls the feed of fuel such as the flow of petroleum from an
elevated reservoir to a burner by which the evaporator is heated.
In the accompanying drawings
Fig. 1 is a section showing the arrangement of the parts necessary for carrying
out this invention, and
Fig. 2 is a side view of the same.
A is the cylinder of a four-beat gas or petroleum moter, B is the combustion
chamber, C the evaporator, D a cross-bar or plate between which and the
combustion-chamber the evaporator is placed. F is the inlet valve for the
petroleum and air. G and G are two iron rods or stays attached to the exterior
of the combustion chamber, H is the burner for heating the evaporator, I a valve
regulating the supply of petroleum to the burner H. K is a lever actuating this
valve, and L is a regulating screw, forming the pivot on which the lever K turns.
The cross-plate D is at one end pressed against the evaporator C by a strong
helical spring on the stay G, and at the other end bears against a small plate
attached to the stay G. The lever K at its upper end bears against the cross-plate D
(see Fig. 2) and is drawn in the direction of the arrow-head p by the helical
spring s.
On the heating and consequent expansion of the evaporator, the plate D is forced
outwards turning on the pivot i on the stay G' allowing of lever K to turn on the
pivot z and to be drawn in the direction of the arrow-head p by the springs thus
striking against the valve T, pushing this towards its seat and so reducing the flow
of petroleum to the burner H.
If the temperature of the burner falls below a certain degree and therefore
contracts, the plate D falls back releasing the pressure of the lever K on the
valve 1, and thus allowing of the normal supply of petroleum passing to the
burner H.
By turning screw L the action of lever K against the valve I can be regulated
according as it is desired to cut off the supply of petroleum sooner or later.
Having now fully described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I
claim is: -
1) In petroleum motors the method of automatically regulating the temperature
of the evaporator by utilising the variations in the length of the same, due to
variations in the temperature thereof, these variations controlling through suitable
intermediate parts the supply of petroleum to a burner by which the evaporator is
heated.
2) An apparatus for automatically regulating the supply of petroleum to the
burner heating the evaporator of a petroleum motor, substantially as herein
described with reference to the accompanying drawings.
Dated this 6th day of August 1892.
J. H. JOHNSON & Co.,
Agents.