Year: 1887

page_text: Date of Application, 20th July, 1887
Complete Left, 20th Apr., 1888
Complete Accepted, 15th June, 1888
I-EDUARD JACOB HAHN of 70 Gleuburgstrasse Frankfort on the Maine Germany
Engineer do hereby declare the nature of this invention, to be as follows:-
This invention refers to various improvements in gas motors. The improvements
are applicable to rotary and to reciprocating gas motors and comprise arrangements
for admitting and distributing the fluids and gaseous mixture and for igniting the
latter.
In a rotary gas motor constructed with these improvements the piston is fixedly
connected with a narrow central disc with boss fixed on the shaft. The latter is to
a great extent relieved from the pressure in the cylinder by means of a hollow
circular chamber formed at each side of the aforesaid central disc. One chamber is
in one with the back wall of the cylinder and the other chamber is a loose part
which has its bearing in the front wall of the cylinder and by means of the cylinder
cover and an intervening spring washer is pressed against the aforesaid central
disc, causing a tight joint to be made against both sides of the disc. The bulk of
the pressure of the explosion which would otherwise come upon the shaft comes
thus on the chambers and thence on the front and back walls of the cylinder, while
the small remaining portion only comes on the narrow disc and thence onto the
shaft.
The piston shaped ignition slide is worked from an eccentric cam on the shaft
of the motor, a curved or other spring bringing the piston slide down again. The
valve for gas inlet from the gas producer or carburetter (by preference arranged on
the engine) is similarly worked from an eccentric cam on the opposite end of the
said shaft by means of a double armed lever, a helical spring serving for raising
and closing it. The air pump for supplying the gas producer is worked by a crank
pin on the first named eccentric cam. The pressure in the gas producer on the
engine is kept constant by means of a yielding (spiral spring) connection between
the rod from the just named crank pin and the air pump plunger; when the
maximum pressure has been attained the spiral spring is compressed and no motion
given to the pump plunger. The pump delivery pipe is fitted with a back pressure
valve which closes during the suction.

page_text: A branch pipe from the gas supply pipe to the aforesaid gas inlet valve supplies
gas to the igniting appliance, and a small pipe leads from thence to the ignition flame
aperture. The flame enters a port in the shell of the ignition slide which has also
a port in the opposite side for gas inlet; when the gas is admitted it flows into the
cylinder which thus is supplied with gas partly by the aforesaid gas inlet valve and
partly by the ignition slide. This is important because thereby the products of
combustion remaining from the previous stroke cycle are effectually removed from
the cylinder. The same takes place when the motor works without pressure or
without the air pump and gas producer on the engine; the ignition chamber in the
slide valve being then filled by the suction action of the engine piston. While the
proper amount of gas is being supplied the ignition slide remains stationary but
towards the close it is raised whereby the gas inlet port to the slide and the gas
outlet port therefrom to the cylinder are closed while in the same moment the air
inlet is opened. The latter is then closed by the further ascent of the slide and
the ignition port opened. The mixture is then ignited by the flame opposite that
port and the engine piston quickly closes against the outside and the explosion in
the cylinder takes place whereby the piston is moved round. During this the slide
continues moving up. In the highest position it rests until the products of com-
bustion begin to flow out through an opening in the cylinder. The aforesaid spring
brings the slide down again.
Instead of a gas flame I may use a wick flame which enters the bottom of the
slide and I provide air inlet passages therefor but retain for security a small lateral
gas flame for lighting the wick flame if it should go out; the fumes pass out through
the air inlet port in the upper part of the slide. The wick flame air inlets and the
gas flame port are closed just before the explosion.
If I make the slide open below I close the bottom of its casing. By this means 1
cause the gas ignition flame. to be sucked in during the ascent of the slide thus
ensuring ignition of the gaseous mixture with a very small ignition port in the slide
casing. The gas is drawn in by the engine piston from a branch from the gas supply pipe.
The engine piston is kept tight by means of four rectangular pieces which bear
against the rectangular side of the piston. These pieces lap over each other at their
places of junction and are pressed against the surfaces for making joint by means of
cut spring rings, springs or cone ferrule with nut. Sometimes I admit the gas
pressure to an interior chamber formed inside of the spring rings.
the
Or I may make the piston similar to that of a conical cock plug that is to say
cylinder is made slightly conical inside both towards the outer and the inner part of
its annular chamber and the piston formed accordingly that is to say tapering off
towards the outside diameter and provided with an annular disc working in the
smaller end of the conical cylinder and keyed to the shaft. Nut and check nut are
provided on the latter for setting up the cylinder against the piston.
The abutment consists of a hinged flap, sometimes aided by a spring and having
packings to make joint against the inner axial boss of the cylinder and against the
front and back of interior of cylinder.
As applied to reciprocating engines working on the four cycle principle, I use
similar ignition slide appliances as already described and placed on one side and
worked by a cam and spring. The inlet valve 1 make by preference in the form
of a flat slide arranged on the opposite side and also worked by cam and spring as
in the first described form of engine. It has two ports the lower one for gas inlet
and the upper one for outlet of products of combustion. The cam shaft is driven
from the engine shaft by tooth wheel gearing two to one. The mixture of gas and
air is automatically regulated according to the load on the Engine by means of a
cock or slide which is regulated by a centrifugal or other governor in such manner
that in the two extreme positions corresponding with the greatest power of motor and
its running unloaded the normal gaseous mixture (as regulated by cocks on the
carburetter) or pure air are respectively admitted to the engine.
When the latter is constructed on the two cycle principle and with compression,
the carburetter being also placed contiguous to the engine cylinder it forms a most

page_text: effective and compact gas engine. The cylinder has a cover on the side towards the
crankshaft and this side is used for drawing in and compressing the mixture. At the
other end of the cylinder is formed a gas reservoir. The cylinder and the gas
reservoir are connected with the carburetter by pipes, suction valve and delivery valve
being provided, also a safety valve to prevent undue pressure. The ignition slide of
the form described and the slide for admission and emission are arranged parallel and
working against an intermediate wall in the slide casing which wall has a through
port. Both slides are worked by the same cam and spring as in the previously
described forms of engine. In the lowest position the gaseous mixture is admitted
behind or under the piston and to the gas reservoir.
According to another arrangement I actuate the piston like ignition slide, an inlet
valve and an outlet valve from a crank pin on a spindle driven by wheel gear from
the engine shaft. The upper end of the ignition slide is worked from the aforesaid
crank pin. The inlet valve is worked by tappet from lower end of ignition slide so
that it is raised and opened by the descent of the ignition slide and vice versa.
inlet valve is closed by an adjustable spring as in the previously described forms.
The gas may be produced in a carburetter constructed as described in my patent
application bearing even date herewith.
The

page_text: I, EDUARD JACOB HAHN of 70 Gleuburgstrasse Frankfort on the Maine Germany
Engineer 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 refers to various improvements in gas motors. The improvements
are applicable to rotary and to reciprocating gas motors and comprise arrangements
for admitting and distributing the fluids and gaseous mixture and for igniting the
latter.
Figure 1 of the accompanying drawings is an end elevation figure 2 a plan view
and figure 3 a vertical longitudinal section of a rotary motor constructed with these
improvements. The piston K is fixedly connected with a narrow central disc. S with
boss fixed on the shaft W. The latter is to a great extent relieved from the pressure
in the cylinder by means of a hollow circular chamber formed at each side of the
aforesaid central disc S. One chamber 0 is in one with the back wall of the
cylinder A and the other chamber 01 is a loose part which has its bearing in
the front wall of the cylinder and by means of the cylinder cover A¹ and an inter-
vening spring washer P is pressed against the aforesaid central disc causing a tight
joint to be made against both sides of the disc S. The bulk of the pressure of the
explosion which would otherwise come upon the shaft comes thus upon the
chambers and thence on the front and back walls of the cylinder A while
the small remaining portion only comes on the narrow disc S and thence onto the
shaft W.
cam s.
The piston shaped ignition slide Z is worked from an eccentric cams on the
shaft W of the motor, a curved or other spring such as for instance the spring f
bringing the plunger slide Z down again. The valve E for gas inlet from the gas
supply vessel G on the engine is similarly worked from an eccentric cam s¹ on the
opposite end of the said shaft W by means of a double armed lever H, a helical
spring serving for raising and closing it. The air pump L for supplying the gas
vessel G from the carburetter is worked by a crank pin on the first named eccentric
The pressure in the gas vessel G is kept constant by means of a yielding
(helical spring) connection between the rod t from the crank pin on the cam s and
the air pump plunger. When the maximum pressure has been attained the helical
spring is compressed and no motion given to the pump plunger. The pump delivery
pipe is fitted with a back pressure valve at d figure 1 which closes during the suction.
A branch pipe w figure 2 from the gas supply pipe u to the aforesaid gas inlet
valve E supplies gas to the igniting appliance. A small pipe leads from thence to
the ignition flame aperture F. The arrangement of ignition slide is seen in three
different forms at figures 4, 5 and 6. The ignition slide Z is in the form of a plunger
piston working in the guide tube It. Their position corresponds to the period of
filling the cylinder with gaseous mixture. The slide in figure 4 is the same as in

page_text: figure 3. In the position shown in these the ignition chamber K' will be filled with
gas from the openings 66. Simultaneously there will be an overflowing of the gas
from the chamber K through the openings at a to the working space in the
cylinder A, so that the filling fakes place in two ways, one of them by means of the
main supply pipe to the inlet valve E and the other by way of w K' a' a.
This is important because thereby the products of combustion remaining from the
previous stroke cycle are effectually removed from the cylinder. The same takes
place when the motor works without pressure or without the air pump Land
gas vessel G on the engine; the ignition chamber K in the slide valve being
then filled directly from the gas producer by the suction action of the engine
piston. While the proper amount of gas is being supplied the ignition slide
remains stationary but towards the close it is raised whereby the gas inlet port a
to the slide and the gas outlet port therefrom to the cylinder are closed while
in the same moment the air inlet port e opened. The latter is then closed by
the further ascent of the slide, and the ignition port copened. The mixture is
then ignited by the flame opposite that port, and the engine piston quickly closes
against the outside and the explosion in the cylinder takes place whereby the
piston is moved round. During this the slide continues moving up. In the
highest position it rests until the products of combustion begin to flow out through
the opening a figure 1 in the cylinder. The aforesaid spring f brings the slide
down again.
The ignition appliance figure 5 is substantially the same in action. In this
case I have shewn a wickflame F which enters the bottom of the slido, and I
provide air inlet passages therefor but I retain for security a small lateral
gas flame F for lighting the wickflame Fif it should
The fumes pass out
out.
go
through the air inlet port e¹ in the upper part of the slide. The wickflame
inlets and the gas flame port e' are closed just before the explosion.
If I as shewn in figure 6 make the slide open below I close the bottom of its
casing. By this means I cause the gas ignition flame F to be sucked in during
the ascent of the slide thus ensuring ignition of the gaseous mixture with a very
small ignition port in the slide casing. The gas is drawn in by the engine
piston from a branch from the gas supply pipe: In other respects the action is
as above explained.
Figure 7 is a vertical section and figure 8 a plan section of a modification:
figure 9 is front view of the cylinder face. The slide is worked by a cam fixed
to a tooth wheel which is worked by a pinion keyed to the motor shaft, wheel
and pinion being as 2 to 1; while the piston changes direction the opening and
closing of the openings for suction, ignition and exhaust take place. In four
cycle motors the piston will in the first upstroke draw the gaseous mixture into
the cylinder by way of the pipe a recess or port b and port c. During the
change of stroke the port c and pipe a are closed as the slide is pushed down-
wards. The compression of the drawn-in mixture in the working cylinder space
will take place by the descent of the piston. As the piston descends still further
at the change of stroke communication is made between the port c the chamber n
in the cover D and the flame burning therein by means of the port d in the
slide and the port e in the cover D, so that the space for explosion is closed
to the outside, whereupon the ignition and explosion take place at the dead point
of the crank. During the change of stroke and while the slide descends com-
munication is made between the port g¹ and space with the port c and the
products of combustion in A are pressed out by the descent of the piston. Before
the piston begins to ascend again the slide will by means of a spring or by
a lever in connection with the cam be raised to its initial position and the same
cycle of operations begins. For feeding the ignition flames and there is a
lateral port which during the compression makes connection through the port k
and pipe between the compression space and a pressure regulator in such
manner that gas enters by the pipe from the former to the latter. The filling
of the pressure regulator adjusts itself automatically by its up and down stroke.

page_text: Gas is supplied to the flames f and f¹ by the pipe m, which has a back pressure
valve. The products of combustion in n escape by the port o which during the
periods of suction compression and exhaust communicates with the outlet pipe h.
The slide C has at a lateral opening which during the suction and compression
keeps communication between the space and the flame at the opening p
whereby thus the gas entering at ginton lights the flame f in case it should
have been put out during the explosion. If a piece of spirally wound platinum wire
or gauze is put into the space n above the gas inlet the flame will likewise be kept
from going out, and the outer flame may be omitted. The pipe 7 serves for
letting in cooling water.. Slide valve and cover D are pressed lightly by the
springs ss and are kept from lifting off by the cross bar and set screw u.
Figure 10 shows a conical slide C, and the face B and cover D are formed into
a casing wherein the slide works. The part B is provided with water cooling
appliance and the slide C and interior space with ignition flame is surrounded
by cooling water s is a drag spring, & à friction washer, and ₺ a cross bar with
set screw u.
The engine piston, see figures, 3, 11, 12 and 13, figure 14, figure 15, figures 16, 17
and 18 and figures 19, 20 and 21 is kept tight by means of four rectangular pieces m
which bear against. the rectangular side of the piston. These pieces lap over each other
at their places of junction and are pressed against the surfaces for making joint by
means of cut spring rings, springs or cone ferrule with nut. In figures 11, 12 and 13
is shown a spring ring f. Figures 16, 17 and 18 show a similar form but with mate-
rially larger spring ring so that the gas pressure against the inner side of the ring f
assists to keep tight. The washer is pierced with a small hole to admit gas to the
space a. In figures 14 and 15 the adjustment of the pieces w is made by a fixed or
movable cone. In figure 4 the pieces m are pressed in axial direction of the cone
by nut and feathering washer and thus pressed apart. In figure 15 the pieces m are
immovable axially, but the cone ring k which is loose on the bolt b is adjustable by
means of nut and intermediate spring. In Figures 19, 20 and 21 the pieces mare
like rails crossing each other at the ends and each pressed by a separate spring against
the joint surface. The rectangular plates (under the bolt head and washer and
which fits on the prismatic boss on the piston and thus hinders the latter from
turning) holds the pieces m against the piston K.
The abutment shown in Figure 22 consists of a hinged flap L' which by the gas
pressure aided by a spring on the fulcrum pin is pressed against circumference of the
pressure relieving chamber. Tight joint is made against the cover or back by a
feathering bar let into the flap. The front of piston K has a spring a for taking the
blow against the flap L' and in the lifting of the flap by the piston to bring the point
of contact as low as possible. In Figure 23 there is a slide S which by spring f
is pressed against the chamber 0 and is pushed back by the piston K and hinged
flap L.
•
Figures 22 and 23 show a piston similar to that of a conical cock plug that is
to say the cylinder A is made slightly conical inside both towards the outer and inner
part of its annular chamber and the piston K formed accordingly that is to say
tapering off towards the outside diameter and provided with an annular disc S¹
working in the smaller end of the conical cylinder and a disc S which forms the
cover and is keyed to the shaft W. Nut and check nut are provided on the latter for
setting up the cylinder cover S and the piston against the interior of the cylinder.
The abutment consists of a hinged flap sometimes aided by a spring and having
packings to make joint against the inner axial boss of the cylinder and against the
front and back of interior of cylinder.
As applied to reciprocating engines working on the four cycle principle and illus-
trated by figures 21 and 25, respectively vertical section and end view I use similar
ignition slide appliances as already described and placed on one side and worked by
cam S and spring as in the first described form of engine. The inlet valve I make
by preference in the form of a flat slide i arranged on the opposite side and also worked
by a cam S¹ and spring f¹. It has two ports, the lower one for gas inlet and the

page_text: upper one for outlet of products of combustion.. The cam shaft is driven from the
engine shaft by tooth wheel gearing two to one. The mixture of gas and air
is automatically regulated according to the load on the engine by means of a cock or
slide which is regulated by a centrifugal or other governor in such manner that in
the two extreme positions corresponding with the greatest power of the motor and its
running unloaded the normal gaseous mixture (as regulated by cocks g g' on the
carburetter as described in my patent specification No. 11076 bearing even date
herewith) or pure air are respectively admitted to the engine.
The motor is started in the usual manner. When turning the flywheel J round
the piston will in the upstroke produce suction and draw in gas by the pipe o from
the carburetter C (which is conveniently contiguous to the engine proper) the lower
port being opened. At end of upstroke the port e closes. At the next stroke the
compression takes place. When the piston comes to the dead point the charge in the
cylinder will be ignited by the flame f¹ expand and drive the piston up. During
these two events the slide remains in the shown position. At beginning of the fourth
stroke the outlet opening a will be open and the exhaust take place into the open air.
When the first power stroke has once been made the momentum of the flywheel will
continue the motion.
When the motor is constructed on the two cycle principle and with compression
the carburetter being also by preference placed contiguous to the engine cylinder it
forms a most effective and compact gas engine.
Figures 26 and 27 are vertical section and end view of such a construction
arranged vertically but it may equally well be arranged horizontally. The cylinder A
has a cover on the side towards the crank shaft and this side is used for drawing in
and compressing the mixture. At the other end of the cylinder is formed a gas
reservoir G. The cylinder and the gas reservoir are connected with the carburetter Cby
pipes o and u, suction valve and delivery valve being provided, also a safety valve V to
prevent undue pressure. The ignition slide Z of the form described anent figure 5 and the
slide for admission and emission are arranged parallel and working against an inter-
mediate wall in the slide casing which wall has a through port 2. Both slides are
worked by the same cam S and spring fas in the previously described form of engine.
In the lowest position the gaseous mixture is admitted behind or under the piston and
to the gas reservoir G. Then in the rapid ascent the inlet opening will be closed,
the port el will be opened and quickly closed, whereupon the ignition towards the
working space through the passages will be effected exploding the charge and
causing the ascent of the piston K. In its uppermost position the exhaust a opens.
After the ascent of the piston quick descent to the initial position follows. The
starting and regulation are effected as before described.
According to another arrangement of valve gear for a four cycle motor shown in
the section elevation figure 28 and the plan section figure 29, I actuate a piston like
ignition slide Z, an inlet valve e and an outlet valve v from a crank pin on a spindle
driven by wheel gear from the engine shaft. The upper end of the ignition slide Z
is worked from the aforesaid crank pin. The inlet valve e is worked by tappet n
and lever from lower end frame of ignition slide so that it is raised and opened by
the ascent of the ignition slide Z and vice versa. The outlet valve is worked by
the lever from the same tappet and closed by an adjustable spring as in the pre-
viously described forms. In the descent of the slide Z the tappet n turns up and
lets the lever h¹ freely pass. When the inlet valve has been released from the
tappet n it is closed selfactingly by a spring. The motion of the outlet valve
effected by depression of the double armed lever h¹ on the lug d on frame b. This
valve will be lifted in the descent of slide Z and closed in the ascent of same. The
ignition appliance consists of the cavity K', the passage i communicating with the
compression space. by the connecting passage u and the flame in entering into the
space K. The action is as previously described. The cavity in the slide Z is so
large that the connection of the valve casing with the working space A is kept up
in all positions of the slide, so that a onesided pressure against the slide cannot be
caused by the pressure of the explosion.
is

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 1 declare that what I
claim is.
First. The combinations and arrangements of parts forming the improved construc-
tions of appliances for admission ignition and emission substantially as described
with reference to figures 4 to 10, 28 and 29.
Second. The regulation of the pressure of the gas or carburetted air by a yielding
connection between the pump rod and the plunger of the gas supply pump
substantially as described with reference to figures 1, 2 and 3.
Third. The construction and arrangement of parts for relieving the shaft in a
rotary motor of pressure caused by the explosion substantially as described with
reference to figures 1, 2, and 3, and figures 22 and 23.
Fourth. The constructions of pistons for rotary motors substantially as-described
with reference to figures 11 to 23.
Fifth. The combinations and arrangements of parts forming the improved con-
structions of gas motor with rotary and with reciprocating piston substantially as
described with reference to figures 1, 2, and 3, 22 and 23, 22" and 23" 24 and 25
and 26 and 27.

page_text: Date of Application, 20th July, 1887
Complete Left, 20th Apr., 1888
Complete Accepted, 1st June, 1888
I, EDUARD JACOB HAHN of 70 Gleuburgstrasse, Frankfort on the Maine, Germany,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to a carburetter referred to in a patent application of mine
bearing even date herewith for an invention entitled "Improvements in gas motors."
The gas is produced in the carburetter by passing air through a volatile hydrocarbon
such for instance as benzine contained in or distributed over an extended surface of
porous material. The carburetter is a vessel by preference cylindrical and filled with
a suitable porous material such as cotton wool fixed to both sides of wire netting
rolled up so as to fill the vessel.
The pipe for air supply branches off to and communicates with each end of the
vessel and is provided with regulating cocks at one end and outlet for. the gas (air
charged with benzine fumes) at the other end. The liquid may be supplied by a
pipe entering the lower part of the vessel and going up to a supply vessel on the top
of the carburetter proper and provided with a cock. As the liquid in the carburetter
sinks below the top of the opening of the benzine supply pipe air or gaseous vapour
will rise up into the supply vessel and displace some benzine in the latter which will
then flow down again into the carburetter and so on.
Sometimes I omit the liquid supply vessel and saturate the "wick" in the car-
buretter, running off the surplus liquid by a cock and pipe.
Instead of rolling up the sheet I may especially for a vertically arranged car-
buretter pass the sheet backwards and forwards therein and around rollers.
Doted this 2nd dow of Kohrn 1888
EDUARD JACOB HAHN.
By Jensen & Son,
77, Chancery Lane, London, W.C.,
Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Carburetters for Gas Motors and for
other Purposes.
I, EDUARD JACOB HAHN of 70 Glouburgstrasse Frankfurt on the Maine Germany
Engineer 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 a carburetter referred to in a patent application of mine
bearing even date herewith for an invention entitled, Improvements in gas motors.
Such carburetters are applicable to such and other gas motors and generally for the
production of gas. The gas or carburretted air is produced in the carburetter without
the need of heat by passing air through a volatile hydrocarbon such for instance as
benzine contained in or distributed over an extended surface of porous material. The
carburetter is a vessel by preference cylindrical and filled with a suitable porous
material such for instance as cotton wool fixed to both sides of wire netting rolled up
so as to fill the vessel. This latter is provided with pipes and cocks or valves
arranged so as to regulate the degree of carburetting as desired and in some cases
combined with a liquid supply vessel and means for supplying automatically the liquid
therefrom to the carburetter proper.
Figure 1 of the accompanying drawings is a vertical longitudinal section and
figure 2 a vertical transverse section of a carburetter constructed according to my
invention.
The carburetter A is provided with wire netting B having strips or layers of cotton
wool or other suitable absorbent material attached to both sides this netting being
rolled up so as to fill the vessel. C is the cock for the air supply and connected to the
pipe D which latter branches off to and communicates with each end of the vessel A
and is provided with regulating cocks E and F and gas outlet G. If the cock E is
shut and the cock F open the air from the cock C will enter the left end of the carburetter
and after passing through it and absorbing the benzine or other hydrocarbon vapours
it will pass off as gas or carburetted air by the pipe G. If after passing through the
carburetter a certain amount of air is to be mixed with the carburetted air to
impoverish it to a suitable degree the cock E may be opened more or less as required.
By manipulating the cocks E and F any required degree of carburetting can be
obtained and carburetted air obtained without the need of heat suitable for motors
and for other purposes. Any surplus liquid collecting at the bottom can be drawn off
by the cock H. Benzine is supplied by the cock I as required.
Figure 3 is a vertical longitudinal section figure 4 a vertical cross section and
figure 5 a plan of a similar carburetter but fitted with a benzine supply vessel. The
interior of the carburetter A will contain absorbent material as already described
though not shown here. The pipe for air supply branches off and communicates with
each end of the vessel as before described and is provided with regulating cocks E

page_text: and F at one end and outlet G for gas or carburetted air at the other end. The air
enters by the cock (. If the cock E is shut and the cock F is open the air passes
through the carburetter and out at G. But by opening the cock E more or less or
by manipulating the cocks E and F the degree of carburetting can he regulated as
required. The liquid is supplied by a pipe T' entering the lower part of the vessel A
and going up to a supply vessel K on the top of the carburetter proper A and provided
with a cock I. As the liquid in the carburetter sinks below the top of the opening of the
benzine supply pipe air or gascons vapour will rise up into the supply vessel K and
displace benzine in the latter which will then flow down again into the carburetter A
and so on.
L is a stopper for the supply opening in the top of the vessel K.
Figure 6 is a vertical section and figure 7 a horizontal section through a carburetter
arranged vertically and without a supply vessol. Instead of rolling up the sheet B
I here show it passed backwards and forwards in the vessel A and around
rollers B. The pipes are arranged substantially as in figure 1 the air entering by
the cock C branching off by the pipe D to each end of the vessel A and the
degree of carburetting being regulated by the cocks E and F, the carburetted air
passes off by the pipe G. A¹ A¹ are sheets of felt or other suitable sheet material for
the rollers and absorbent sheet to rest against.
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.
First. In carburetters the application and use of a sheet of absorbent material coiled
or wound in the carburetter and soaked with benzine or other suitable hydrocarbon
for the purpose of carburetting air traversing the carburetter without the need of
application of heat such carburetted air being suitable for use in motors and for other
purposes substantially as set forth.
Second. The means for regulating the degree of carburetting the air substantially
as set forth.
Third. The means for automatically regulating the supply of hydrocarbon liquid
from a supply vessel substantially as set forth.
Fourth. The construction of carburetter described and shown.
ጎበ
A
1000