Improvements in or relating to Gas and like Motors.
Year: 1896

page_text: Date of Application, 31st Mar., 1896-4ccepted, 1st Aug., 1896
COMPLETE SPECIFICATION.
Improvements in or relating to Gas and like Motors.
I, JAMES FRANK DURYEA, of 70 Montrose Street, of the City of Springfield,
County of Hampden, State of Massachusetts, United States of America,
Manufacturer, 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 :-
Reference is to be had to the accompanying drawings forming a part of this
specification, in which a double acting motor is shown and in the drawing,-
Figure 1 is a plan view of the motor.
Figure 2 is a side elevation of the same.
Figure 2A is a section horizontally through the fly-wheel, the same comprising
the governor devices, in part.
Figure 2 is a sectional view through the valved exhaust outlet for one of the
cylinders.
Figure 3 is an end view of the principal parts of the motor, the same being on a
larger scale than the preceding figures and showing certain parts comprising the
vapor or gas inlets into one of the cylinders in vertical sectional view.
Figure 4 is a partial plan, taken at one end of the motor, and a partial horizontal
section; the plane on which the parts are shown in section is indicated by the
line 4-4, Figure 3. The line 3-3 on this Figure 4 indicates the plane on which
the parts in section in Figure 3 are taken.
Figure 5 is a partial vertical sectional view, taken in a plane parallel with the
length of one of the cylinders and as indicated by the line 5-5, Figure 4.
Figure 6 is a longitudinal section taken vertically and centrally through one of
the cylinders.
Figure 7 18 a partial horizontal section taken on line 7-7, Figure 6.
Figure 8 is a view in section similar to the right-hand end portion of Figure 6,
but showing a modification of the arrangenient of the entrance chamber for the
gas or vapor, and of the sparking device.
Figure 9 is a vertical sectional view on a large scale of the improved lubricator
and showing in a manner connections therewith for automatically shutting it off
concurrently with the switching out of the electric sparking circuit.
This motor, as shown, comprises two cylinders, A, A, cach having a piston, B,
to and between which and the crank, C, on the driving shaft, D, is secured and
interposed the connecting rod, E. The cranks are set at different radial lines to
accord with the usual alternating operations of the two pistons, as usual.
At the rear end of each cylinder, which is approached by the piston on its
backward movement, is an induction chamber, F, which opens freely to com-
munication with the cylinder chamber back of the piston and which has connection
though the valved passage, b, with the service tank or receptacle, G, for each
cylinder, in which is contained the gasoline, there being passages and chambers
intermediate between the said service tank, G, and the said valved passage, b,
which will be hereinafter particularly described.
The adequate supply of the gascline is carried in a properly located storage or
supply tank, H, of suitable capacity, the same being indicated in the plan view,
Figure 1, and with this tank the conduits, 15,16, have connection, leading thence
to the aforesaid service tank, G; the pump indicated at 17-which is automatically

page_text: operated by the cam, 18, on the motor shaft,-serves to force the fluid in sufficient
quantities into the service tank.
This pump in connection with the conduits leading from the supply tank to the
service tank for the cylinders is not regarded as an important part of the pre-ent
invention and is not illustrated in detail or claimed, and is regarded as only one of
many ways for maintaining a sufficient quantity of the motor fluid in the service tank.
Any of the well known gravity systems with regulating devices might be submitted
with good effect.
19 represents an overflow pipe having branched connections with each of the
service tanks, G, and extending therefroin back into the supply tank, H.
The double chambered service tank, G, may be located above the rear ends of
the cylinders, and the rear of this service tank is con-tituted by the comparatively
thick wall, 20, (see Figure 5) within which is the angular passage, 22, leading from
a low part of the interior of the service tank upwardly through and within the
thickness of the wall; and with this passage connects the injector tube, d, which
projects horizontally rearwardly and is surrounded widely by the hollow coating, e,
which constitutes what will be herein termed the injector chamber.
Said chamber has the depending enlargement, 23, at its rear end with which
the pipe, 26, leads to the aforesaid vertically arranged valved pissage, b, which
opens into the gas inlet-chamber, F, at the rear of each cylinder.
The injector chamber has the partition, f, across it, intermediately of its length,
the same being provided with the concentric annular extension, or thimble, f, the
circular opening entirely through which is of a considerably greater diameter than
the exterior of the injector tube; and said annular extension, f³, projects
rearwardly end wise slightly beyond the end of the injector tube.
The said partition has the arc-formed apertures, f³, therethrough overlaid by
which at its rear is the movable register plate,, having apertures therethrough
and provided with the handle-arm, f, which projects through a slot in the side of
the injector chamber casing. The injector chamber casing forward of the aforesaid
partition, f, has the several perforations, 30; and this perforated portion of the
injector chamber is somewhat widely surrounded and enclosed by the air jacket at J
which has an opening leading thereinto for the entrance therewithin of atmospheric
air. The air may enter through a pipe, J, which may have a suitably large mouth
whereby, by being properly directed relative to the travel of the motor (when the
same is used for propelling a vehicle, vessel, or other conveyance), whereby there
may be more or less of a forced draft or inflow of air into the aforesaid air-
jacket, J.
It will be noted on reference to Figures 4 and 5, that there will be always a
constant facility for passage of air through the central thimble surrounded opening
in the partition through which the injector-tube passes. There may be more or
less further flow of air from the forward to the rear portion of the injector
chamber, e, according as the register, f, is more or less open.
The amount of oil which may be drawn through the injector-tube will be
regulated by the screw plug, 32, which screws vertically down into the tapped hole
therefor which is in a line coincident with the vertical branch of the aforementioned
angular passage, 22, Each of these valved piugs has a suitable head or knob,
whereby it may be conveniently turned, and it also has an index finger, 33,
thereon which may register with a fixed scale, or graduated plate, 34, thereunder
or adjacent thereto.
Each valve, h, which has its seat in the lower end of the aforesaid passage, b,
which is connected with the injector-chamber, is carried by the vertically arranged
valve-stem, h, which is guided in a suitable apertured spider and head, 35, and 36,
and has at its upper end a yoke, h³, which at the upper overhanging portion
thereof is equipped with the vertically applied and depending adjustable screw, 37,
that has a cooperative relation to the bar, K, which is comprised in the governor
mechanism; and which mechanism will be hereafter described in its entirety.
The gas and vapors of the gasoline which are with a proportion of air enterel

page_text: in the induction chambers, F, F, at the rear ends of the cylinders, are periodically
and alternately exploded by means of electric sparks produced by sparking
mechanism which is illustrated in the drawings and which will be very briefly
described as follows, reference being had to Figures 1, 3, 6. and 7.
Within each gas induction chamber, F, is entered a metallic contact, 40, which
is a continuation of the external binding post; and upon a suitable stud or support
located within the chamber, F, is an angular lever, m, pivotally mounted and
having one arm, 42, adapted to rest against the aforesaid contact, 40, and having its
other arm, 43, so located as to be subject to the impingement thereagainst of the
screw or other form of projection, 41, at the rear end of the piston. The lever and
contact, 40, are included in a normally closed circuit which, in Figure 7, is
represented in a conventional way comprising the wires, 44, 44, and which included
a battery or generator, n. The spring applied, as seen at 45, Figure 6, serves to
maintain the lever against the contact, 40.
In practice, the circuit comprises the circuit-breaking lever m, and contact, 40.
of two of the cylinders, and the circuit may be rendered suitably continuous by
wiring, or as preferably practised by utilizing in addition to some wires, also
metallic parts of the motor, as for instance the cylinders, as indicated in Figure 1 ;
and at L, is shown a circuit-breaking device which includes metallic parts, j,j to
which the circuit wires, 44, are connected, so that when not desired to operate the
motor, the circuit may be rendered open for an indefinite length of time.
Each piston has its movements in the operation of the motor, as follows:
Upon the explosion of the gas by the electric spark, it has its working stroke
and is then returned rearwardly whereupon the dead or spen: gas is exhausted (the
exhaust valve being by the valve-motion opened therefor); the piston has a second
forward movement as carried by the momentum of the fly-wheel to which added
impulse is given by the other cylinder-piston, and upon this second forward move-
ment of the given piston, by which a vacuum is created in the cylinder back of
the pistou and also in the induction chamber, F, for gas,-the valve, h, is drawn
downwardly open, the vacuum, or suction thereby induced, drawing inwardly such
a quantity of air from within the air jacket, J, through the thimble, 2, which is
within the ejector chamber, e, that a quantity of the gasoline will be from the
service tank, G, injected through the tube, d, whereupon it becomes commingled
with the air in the injector chamber, and passes into the connected ingress
chamber, F, and also into the cylinder chamber within which the ingress chamber
is, as to all or a portion thereof, located and with which said ingress chamber has
free and open communication. The piston again rearwardly returning compressing
the gas which is in the chambers behind it and which is now in readiness to be
exploded and just as the piston reaches its rearmost extent, the projection, 41, by
contacting with the arm, 43, of the circuit breaking lever, m, so swings such lever
as to carry its extremity, 42, away from the contact, 40 the spark following the
aid extremity, 42, as well known in electric spark producing devices whereupon
the piston will again have its stroke as impelled by the exploding gas. Thus
briefly summarizing the movements of the piston in each cylinder there is, firstly,
the forward stroke on the explosion of the gas; secondly, return of the piston and
exhaust of the dead gas; thirdly, another forward movement of the piston
drawing in the vaporized gasoline and commingled air; and, fourthly, the return of
the piston compressing the gas and air and finally causing the spark and explosion
for the next stroke.
The valve, h, has a spring, he, applied thereto for normally maintaining it closed
at all times, except when the piston has its forward motion between the working
strokes on explosions which are the times when the valve should be allowed to open
for the ingress of the motor fluid. The valve is opened against its spring by the
vacuum or suction within the cylinder when the latter moves forward between each
working stroke.
The governor herein before referred to and comprising in part the bar, K, will be
now more fully described.

page_text: The said bar, K, is guided to move horizontally on the ways of the bricket
supports, 47, therefor and has the pin and slot engagement with the said bricket,
as seen at 48.
This bar operates in common relative to both of the yokes, h³, of the valve-stens
which are provided at the back of each cylinder, and has beneath the screw, 37,
which is adjustable on each of the yokes the recess, 50, at the left of which the
upper edge of the bar, K, is inclined, as seen at 52.
The fly-wheel, M, which is cored out suitably has pivoted to the ear-lugs, 53,
thereof, the angular levers, o, having the arms, 54 and 55, the latter being weighte
while the armis, 54 have pin and slot engagements with the sleeve, 56, which
rotates with the motor shaft, D, and which slides along the same. Said sleeve, 56,
is suitably grooved and is surrounded by the collar 57, which partake of the
sliding movement of the sleeve, but not of its rotary movement. The opposite
weighted arms, 55, are connected by the spiral spring, 58.
The long lever, 59, which is intermediately pivoted, has a pin-and-slot connection
with the aforesaid collar, 57, and its rear end has an engagement with the aforesaid
governor-bar, K, whereby upon the sliding movement of the collar as induced by
variations in the speed of the motor, and the consequent centrifugal operation of
the governor, the said governor-bar, K, will have such an endwise movement as to
bring its inclined portions, 52, under the screw, 37, of the valve-stem yoke, whereby
upon excessive speed which induces a more considerable entwise movement to the
bar, K, the inclined portion, 52, will have a position to limit, in degree, the
downward movement of the valve-stems and the extent of opening of the valves, h.
The sensitiveness of the governor is regulated by applying the springs, k and k¹,
for pressing longitudinally upon the bar, K, at opposite ends thereo!, and provi ling
means for varying the compression of one or both of the springs. And in Figure 1,
the spring, k, is shown as applied between the extremity of the lever, 59, and a
button,, at the end of the rod, k³, which rod is adjustable longitudinally coincident
with the length of the said bar, K, and of the spring, k. By this means, a greater
or less resistance may be imposed against the force generated by the governor
levers against their spring, 58, at the fly-wheel, so that the notor may be adjuste.l
to be governed for a high or comparatively low maximum speed.
The exhaust mechanism is constructed and arranged so as to open the exhaust
port on the return of the piston next after each working stroke thereof; and,
therefore, as the cylinder is to be exhausted only once to every two reciprocations
of the piston, a special mechanism for this purpose is provided for operating the
exhaust valve, p, which has its seat at 3, within the casing enclosing the exhaust
chamber, y, at a rear lateral part of each cylinder. The exhaust chamber is, when
the valve, p, is open, in communication with the pipe or passage, q², which leads
and opens to or into any desired place or receptacle.
At one side of the motor upon one end of the motor shaft, D, is a spur-gear-
wheel, s, which meshes into a second-spur-gear-wheel, s, of double the diameter,
and which is mounted on a suitable stud or arbor supported upon a bracket at the
side of the motor. Rotating in nutson with this gear, s2, are two eccentrics, t, t,
which are set at quarters, as seen in Figure 2. Each eccentric is surrounded by an
eccentric strap t, which has as the radial continuation thereof the eccentric rol, t.
One of these eccentric rod-, t, connects with the depending lever, ts, which is
fast upon the transverse horizontal rock-shaft, t, while the other eccentric rud, t,
is connected with a lever, 0, which depends from its loose encircling support upon
the rock-shaft. And this depending lever, 50, has its lower end in pressure contact
against the outer end of the valve-stem, p, of the exhaust valve, p.
The
Each exhaust valve has a spring p, which normally maintains it closed.
said rock-shaft, te, which extends crosswise of, and above the motor, has at its
other end which is at the side of the motor, opposite from that at which are located
the two eccentric straps and the gearing therefor, the fixed depending lever-arm, to,
which has the same manner of engagement with the spring-pressed valve-stem at
the further side of the inotor, as had already been described for the valve-stem, t,

page_text: at the near side. Each of the eccentric disks, t, which is eccentrically of its own
center mounted upon the arbor or axis of the gear-wheel, s, to rotate as one with
such wheel, has concentrically of its point of support the arc-formel slot r,
through which projects a screw-stu 1, 2, which is mountel at a suitable place off
from the center of the gear-wheel, , anl which stud receives the confirming
nut, 3. In order that the time of the exhaust of both of the cylinders miy
be properly accomplished, the one relative to the other, and each with proper
relation to the instant of the working stroke of the piston, the eccentrics may
be by the provision of the stul and slot mode of connection with the gear
wheel, 2, (with which under running con litions they are as fixed parts) properly
adjusted.
This
Q,Q, represents lubricators for the pistons, they being mounted at the tops of the
cylinders by having their lower externally screw-threadel hubs, 60, screwel within
tapped holes therefor in the tops of the cylin lers. Euch lubricator is of a coa-
struction shown in the sectional view, Figure 9, that is to say, it has a false bottoin
or partition, 62, within which is the horizontal passage, 63, extended diametrically
of the lubricator body and within the thickness of the said false bottom.
passage has leading from the oil chamber above the partition the duct, 61, which
extends to the passage, 63, while in an offset vertical line from the axis of the
passage, 64, is the passage, 65, which leads downwardly through the lower half of
the thickness of the partition, 62, forming a communication from the horizontal
passage, 63, into the sub-chamber, 66. The screw-plug, 67, may entire'y, or more
or less nearly, close the communication between the intermediate part of the
horizontal passage, 63, and the passage, 65.
represents a shaft which extends axially through the half of the horizontal
pa-sage, 63, opposite the screw-plug, 67. The lubricator case is provided with
the radially extended boss, 69, which is hollow and adaptel to receive the stuffing-
box, 70, and to contain the spring, 72, which exerts an inwardly forcing pressure
upon the said shaft, u, which is suitably shouldered to provide a rest for the one
end of the spring. The end of the stuffing box which is to be continued as a part
of the lubricator body is formed with the end faced can, e, while the hub of the
lever arm, w, which is affixed to the shaft is also constructed to conform to the
cam-formed end contour of the stuffing-box.
The lever, w, applied to the shaft, Q, of both of the lubricators, hive a
connection with the common bar, r, which in the arrangement shown in Figure 1,
forms part of the circuit-breaker, which bar is connected to one of the contact pirts
of the circuit breaking device, hereinbefore referred to, as indicate at L.
Therefrom at the time the motor is to be stopped when the motorman will
operate the encuit breaker L, to leave the circuit open, he will also without
purposely so doing but necessarily, effert the swinging of the levers, w, w, in
such a way as to allow by the arrangement of the cam faces, the inner ends of the
shafts, u, to close the communication between the passage, 64, and th passage, 63,
so that no oil may uunccessarily run down into the cylinder. Of course, it is
understood that the reversed action of the circuit breaker will correspondingly
reverse the swinging movements of the levers, w, w, whereupon they will be
camined outwardly opening the passageway for oil.
The oil is not maintained in the lubricator chambers fully to the top thereof;
and there is a pipe, 75, which has its lower en 1 set within, or connectel at, a hole
through the horizontal partition or false bottom, 62, so that there is con-
munication between the space above the oil in the main chamber of the lubricitor,
and the sub-chamber.
At each time when the piston passes so far rearwardly as to uncover the
opening, 71, in the lower end of the lubricator the oil may drip or flow into
the cylinder, while of course at other times there may be a certain amount of
oil supplied upon the periphery of the piston. The pipe, 75, provides for a full
atmospheric pressure above the oil lien the piston uncovers the opening, 71,

page_text: whereupon the downflow of oil is the better assured. The sub-chamber, 66,
provides that there will be a sufficient volume of air for the establishment,
periodically, of the atmospheric pressure and without interfering with, or being
interfered by the outflowing oil.
The position of the lubricator is such relative to the stroke of the piston
that passage, 71, is never open to communication with the cylinder chamber to
the rear of the piston and therefore gas may ever pass into the lubricator.
The crank and piston pins, and, to which the connecting rod, E, has its
connection by strap or eye engagement are lubricated by means which will be now
described, reference being had to Figure 6:
The piston-rod, E, is tubular, the passage or chamber therein being of reduced
size at its ends. And in these reduced end passages which lead to the internal well
of the strap or eye which surounds the crank or piston-pin, is a quantity of
absorbent fibious compressible material which is indicated at 80. The tubular
piston-rod is intermediately at its upper side provided with the hole, 82, which is
closed by the screw cap or plug, 83. This is accessible through the opening at 84,
in the apron of the motor for the entrance of oil into the hollow piston-rod. The
oil will slowly ooze through the compressible absorbent material, 80, and be
conveyed upon the crank-pin, and the cylinder-pin. At the left-hani end of the
piston-rod, as shown in Figure 6, a screw-plug, 85, is shown as laterally entering
the chamber in which is contained the absorbent material which may be turned
inwardly so as to cause the oil saturated compressible material therein to be
crowded by displicement against the crank-pin.
As shown, this piston-rod is made sectional, the same comprising parts, as
follows:
At the right-hand end the eye section, 90, has the longitudinally bored and
externally screw-threaded stem, 92. The strap at the other end is sunilarly
constructed with the exception that it is made in the form of a two-part strap, 93,
united by bolts to embrace the crank-pin. The intermediate part, 94, of the
connecting rod is in the form of a tube with the opening therethrough of con-
siderable size, and having its ends internally screw-tapped to engage the externally
threaded stems, 92, of the sections 90 and 93. The orifice of each of the stems, 92,
is also internally screw-tapped to receive the externally threaded axially bored
nipples, 95, which produce the contraction of the passage or chamber adjacent the
ends of the piston-rod and which may be turned at the time of setting up or over-
hauling the motor to the proper crowding action against the oil absorbing material
in the hollow end sections.
In Figure 8 a slightly different specific construction of the gas induction
chamber, F, is shown, the same in this case entering the end portion of the
cyln der, transversely of the length of the latter, its lower open end not extending
so far down as the bottom of the cylinder chamber. The sparking device in this
case is located at a point which at the time of producing the spark will be fully
surrounded or flushed by fresh gasoline vapor. The provision, in all cases, of the
induction chamber within or adjacent which is the sparking device always insures
a good and fresh supply of the explosive vapor or gas at and surrounding the point
at which the spark is produced and obviates any possibility or failure to explode
or to completely utilize in the explosion, all of the effective explosive gas or vapor
by reason of any dead carbonic acid gas which might remain in the cylinder alter
the preceding stroke.
In starting up the motor, the switch, L, is moved to close the electric circuit,
and the motor-shaft is rotated by hand power, turning the fly-wheel, M, or applying
a crank at the squared cnd, 95, of the motor-shaft, D, whereupon the movements
to the pistons will be in this way imparted causing the injection of the gas into the
cylinders, and the sparking and explosion thereof.
After a few turns have been thus given to the motor-shaft, the motor will
continue to be run by the successive explosions of the motor fluid, so long as

page_text: the gasoline supply is maintained and the current continues througe the sparag
circuit.
Having now particularly described and ascertained the nature of the sail inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. In a motor, in combination, a piston cylin ler, an injector chamber anl a
valved passage communicating therefrom with the cylin ler, a service tank and
an injector-tube communicating therewith and extending rearwardly into the
injector chamber, a partition which transversely divides the injector chamber and
which has the longitudinally passaged thimble extension widely surroun ling the
injector-tube, an air-chamber having communication with the rear compartment
of the injector chamber, and means for periodically igniting the motor fluid
which is entered at the rear of the piston, substantially as described.
2. In a motor, in combination, a piston cylinder, an injector chamber having
a valved passage communicating with the cylinder, a service tank, and an
injector-tube coinmunicating therewith and extending rearwardly into the injector
chamber, a partition which transversely divides the injector chamber which has
the longitudinally passaged thimble of greater diameter than the injector-tube
which it surrounds, and which partition has the perforations f³, f³, the apertured
register plate f, overlying the perforated partition, and means for moving it, an
air-chamber having communication with the rear compartment of the injector
chamber, and means for periodically igniting the motor fluid at the rear of the
piston, substantially as described.
3. In a gasoline or analogous motor, in combination, the service tank G, having
the passage 22, leading from a lower portion of its interior upwardly and rear-
wardly therefrom, the injector-tube connecting with said passage, the injector
chamber e, enclosing the injector-tube and having the thimble enclosed therein
which widely surrounds the tube, and which has its rear end in communication
with atmospheric air, the cylinder, and piston therein, and connecting ways leading
from the injector chamber to the rear part of the cylinder chamber, substantially
as described.
4. In a gasoline or analogous motor, in combination, the service tank G, having
the passage 22, leading from a lower portion of its interior upwardly and rear-
wardly therefrom, and the screw plug for regulating the sau passage, the injector-
tube connecting with said passage, the injector chamber e, enclosing the injector-tube
and having the thimble enclosed therein which widely surrounds the tube, and
which has its rear end in communication with atmospheric air, the cylinder, and
piston therein, and connecting ways leading from the injector chamber to the rear
part of the cylinder chamber, substantially as described.
5. In a gasoline or analogous motor, the combination with the service-tank G,
having the passage 22, leading from a lower portion of its interior upwardly and
rearwardly therefrom, the inlet oil-supplying pipe leading into an upper part of
the service tank and the overflow pipe 19, leading from an intermediate point in
the height of the tank, the injector-tube connecting with sail passage, the injector
chamber e, euclosing the injector-tube and having the thimble enclosed therein
which widely surrounds the tube, and which has its rear end in communication
with atmospheric air, the cylinder and pistou therein and connecting ways leading
from the injector chamber to the rear part of the cylinder chamber, substantially
as described.
6. In combination, in a gasoline motor, a cylinder having the induction
chamber F, opening thereinto at the rear of the cylinder piston, a service tank, an
injector comprising a tube connecting with the tank, and an air tube having
a communication at a rear portion thereof with a source of air supply, surrounding
the injector-tube and a chamber into which both of said tubes forwardly enter, the
passage b, leading upwardly from the induction chamber F, and having the

page_text: check-valve h, downwardly opening, provided therefor and the passage 26, connecting
the injector chamber with said valved passage 6, and a spark-producing apparatus
located within the said chamber F, comprising a circuit breaker adapted to be
moved open mechanically by the piston upon its rearward movement and also
comprising electrical conductors and a generator, substantially as described.
7. In a gas engine, the combination with the passage or conduit b, leading to the
chamber in the cylinder back of the piston having the valve h, therefor and the
valve-stem provided at its top with the yoke 3, on which is the abutment, 37, of
the bar K, which is movable transversely of the valve-stem an having the
recess 50, and its upper edge adjacent the recess inclined, together with a speed
governor actuated concurrently with the running of the motor and having a
connection with said bar for moving it variably proportionate to the developed
speed of the motor, substantially as and for the purpose set forth.
8. In a motor, the combination with the induction passage, b, and valve h,
therefor having the valve-stem provided with an abutment member, of the bar K,
which is movable transversely of the length of the valve-stem and which has the
recess 50, and the inclined edge 52, adjacent the recess; the fly-wheel on the motor
shaft having mounted thereon the centrifugal governor arms, and a sliding collar
actuated thereby; and a lever 59, deriving movement from said sliding collar
and correspondingly imparting movement to the said bar, K, substantially as
described.
9. In a motor of the character described, the combination with the pair of
cylinders and exhaust passages for each arranged at opposite sides of the rear end
of the cylinders having valves respectively therefor with projecting valve-stems
and springs applied for maintaining the said stems normally extended and the
valves closed, the gear-wheel s, on the motor-shaft, and the gear-wheel s³, of twice
its diameter meshing with said gear s, and having secured thereto to move in
unison therewith, the eccentrics t, t, one arranged to revolve in advance of the
other, the rock-shaft, t, having the depending fixed lever-arm, to, and t¹, and the
lever arm, to, loosely hung thereon, the eccentric straps, and the eccentric rods
connected to the arms to and to, the said arms, and t, having engagements with
the said exhaust valve-stems, substantially as described.
10. In a motor of the character described, the combination with the pair of
cylinders and an exhaust passage for each having valves and springs applied for
maintaining them normally closed, of the gear-wheels, on the motor shaft and the
gear wheel, which is of double the diameter of said gear s, in mesh therewith
and having the two eccentrics mounted revolubly thereon and each provided with
an arc-formed slot r, the bolt or studs mounted upon the said gear-wheel and
protruding through the said slots in the eccentrics and having the nuts, ³, all
whereby the eccentrics may be adjusted relative to each other and with relation to
the crank-shaft, substantially as described.
11. In a motor of the character described, the combination with cylinders and
pistons and provisions for introducing an explosive gas into the cylinder chamber
behind the piston, of a circuit having a circuit-breaking spark-producing device
located in the gas chamber at the rear of the piston and a switch for opening the
circuit independently of said spark producing device, lubricators for oiling the
cylinders having valves or plugs movably arranged for closing its outlet and
a connection between said valves and the switch whereby when the switch is
closed the lubricator valves will be opened and vice versa, substantially as
described.
12. In a motor of the character described, the combination with the circuit
which comprises the circuit-breaking, spark-producing device, and a switch for
independently opening the circuit, the same comprising the bar x, of the lubricators
having egress passages and each with a shaft Q', provided with a spring for forcing
it closed and each shaft having a lever arm wo, to which said bar r, is connected,
and a cam r, which so cooperates with the hubs of the arms w, as the latter are

page_text: swung, as to cause, in conjunction with their swinging movements, also outward
movements thereof in the direction of the axis of the shaft, substantially as and
for the purpose set forth.
Dated this 31st day of March 1896
BOULT & WADE,
Agents for the Applicant.