Improvements in or relating to Distributing Mechanism for Gas Motors.
Year: 1889

page_text: Date of Application, 3rd Jan., 1889
Complete Specification Left, 3rd Oct., 1889-Accepted, 3rd Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in or relating to Distributing Mechanism for
Gas Motors.
A communication from EMIL CAPITAINE, of Berlin, in the Empire of Germany,
Engineor.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E. do hereby declare the nature of this invention to be as follows :—
The present invention relates to improvements in distributing mechanism for gas
motors and its object is to enable the toothed-wheel ordinarily employed to be replaced
by a crank or an eccentric. For the purpose of operating the valves at each alternate
revolution only an arm is pivotted to the eccentric rod which arm alternately comes
in contact with the valve rod and misses it.
This reciprocating movement of the pivotted arm may be produced automatically
in the following manner: To the arm pivotied to the eccentric rod is pivotted a
plate having a spring bearing on the arm and holding the plate in the position it just
happens to be in. The arm may he provided with two side arms adapted to come in
contact with two stops fastened preferably to the cylinder and a forward projecting
arm provided with a pin which is adapted to press one or the other of two springs
aside the springs being preferably fixed to the cylinder. The strength of these springs
is not great enough to overcome that of the spring bearing on the arm pivotted to
the eccentric rod so that when one of the side, arms comes into contact with one of
the stops fixed to the cylinder the pivotted arm will be turned on its pivot and its
end will not come in contact with the end of the valve rod but pass it.
the above mentioned two springs fixed to the cylinder is pushed aside during this
movement by the pin fixed to the forward projecting arm of the plate pivotted to
the arm pivotted to the eccentric rod. During the backward movement of the
eccentric rod the bent spring will return the pivotted arm into its normal
position.
One of
In a modification of this arrangement the end of the arm is provided with a
wedge shaped projection adapted to come in contact with a wedge shaped plate
pivotted to a spring fixed to the cylinder. This wedge shaped plate is formed with
a slot through which passes a pin fixed to the cylinder. When the eccentric rod
moves back after the end of the pivotted arm having pushed the end of the valve rod
the wedge shaped projection comes in contact with one side of the wedge shaped
plate pivotted to the above mentioned spring and pushes this plate aside bending the
spring until the pin stops the movement of the plate thus forcing the arm pivotted
to the eccentric rod to turn on its pivot. During the next forward movement of the
eccentric rod the arm turned on its pivot will miss the valve rod and the spring being
released will return into its normal position, the wedge shaped plate turning round the
pin fixed to the cylinder and pointing in the other direction now. During the back-
ward movement of the eccentric rod the wedge shaped projection of its pivotted arm
will strike the other side of the plate and will thus be returned to its normal position
i.e. in position to strike the valve rod during the next forward movemen of the
eccentric rod.
Dated this 3rd day of January 1889

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Distributing Mechanism for
Gas Motors.
A communication from EMIL CAPITAINE, of Berlin, in the Empire of Germany,
Engineer.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E., 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 present invention relates to improvements in distributing inechanism for gas
motors and its object is to enable the tooth wheel ordinarily employed to be replaced
by a crank or an eccentric. For the purpose of operating the valves at each alternate
revolution only, an arm bis pivotted at a¹ to the eccentric rod D, which arm alternately
comes in contact with the valve rod and misses it.
The
This reciprocating movement of the pivotted arm & may be produced automatically by
the apparatus shown in figs. 1, la, lb, and le wherein is represented as pivotted to the
eccentric rod D an arm to which is pivotted at d a plate A having a spring f
bearing on the arm and holding the plate in the position it happens to be in.
plate A has two side arms adapted to come in contact with two stops o o¹
fastened preferably to the cylinder, and a forward projecting arm i provided with a
pin which is adapted to press one or the other of two springs ss aside, the springs
being preferably fixed to the cylinder. The strength of these springs is not great
enough to overcome the friction of the spring bearing on the arm & pivotted to the
eccentric rod so that when one of the side arms ve₁ comes into contact with one
of the stops o o¹ fixed to the cylinder the pivotted arm will be turned on its pivot and
its end will not come in contact with the end of the valve rod but pass it (fig. 1b)
the valve thereby remaining at rest on its seat. One of the above mentioned two
springs ss fixed to the cylinder is pushed aside during this movement by the pin
fixed to the forward projecting arm of the plate A pivotted to the arm pivotted to
the eccentric rod. During the backward movement of the eccentric rod the bent
spring will return the pivotted arm into its normal position.
The arrangement illustrated in figs. 1, 1a, 1b, le consists of piece A pivotted on
pin d and formed of two butt arms v', a spring and a guide arm i; and of two
springs sands, and the pins or stops o o¹, fixed to the cylinder.
Springbears against the tongue 6 and retains piece A in the position it occupies
for the time being.
Arm carries projecting pin or stud
springs fixed to the cylinder.
which, by pressure, displaces the flat.
When the eccentric travels over path a fig. 1, the result is that either arm v
strikes stop o, or arm strikes stop o'. In fig. 1 it is assumed that arm v meets
stop o', whereby spring s¹ is pressed to the right, the consequence, being that, by
the time the eccentric has completed its journey over path fig. 1a, the valve has
dropped down upon its seat, the tongue is brought out of contact with the valve rod,.
while the spring's is allowed to resume its normal position and, in so doing, to press
the said tongue to the left; to which operation there can be no impediment seeing.
that the tongue is capable of easy motion upon pin a¹. Thus the movement over
pathy can (also) take place to its full extent, when the tongue, will pass the valve..
rod, as shown in fig. 1b. Now, however, arme will strike the stop o, and, spring 8.
will be bent to the left, and when path y is travelled over the tongue is thereby
returned to its original position Fig. 1.
In a modification of this arrangement shown in figs. 2, 2a, 2b, 2c, 2d, 2e,
2f, 2g and 24 the end of the arm b is provided with a wedge shaped projection b¹
adapted to come in contact with a wedge shaped plate A pivotted to a spring C
fixed to the cylinder. This wedge shaped plate is formed with a slot through which
passes a pin B fixed to the cylinder. When with the plate A in the position shown

page_text: in figs. 2 and 2d, the eccentric rod is moved back after the end of the pivotted arm
has pushed the end of the valve rod in the manner indicated in fig. 2 the wedge
shaped projection will come in contact with the right side of the wedge shaped
plate A pivotted to the above mentioned spring, and will push this plate and the
spring slightly to the left until the pin B stops the movement of the plate at which
juncture the arm pivotted to the eccentric rod will be forced to turn on its
pivot towards the right as shown in fig. 2b. During the next forward movement of
the eccentric rod the arm thus turned on its pivot will miss the valve rod, and
the spring C being then released will return into its normal position, the wedge
shaped plate turning round the pin B fixed to the cylinder and pointing in the
other direction now as in fig. 2c. During the backward movement of the
eccentric rod the wedge shaped projection 6' of its pivotted arm b will strike the left
side of the plate A as in fig. 29 and will thus be returned to its normal position
i.e., in position to strike the valve rod during the next forward movement of the
eccentric rod.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is :-
1. A contrivance to move the tongue & automatically consisting of the slide
spring the striking arms v¹ the guide rods the springs and the
stops o o substantially as described and illustrated in the accompanying drawings.
2. A contrivance to move the tongue automatically consisting of a pivotted
plate such as A, bolt or stud B and spring such as C substantially as described and
illustrated in the accompanying drawings.
Dated this 3rd day of October 1889.
W. P. THOMPSON & BOULT,
Agents for the Applicant.