An Improved Spring Governor or Regulator for Gas and other Engines and Motors.
Year: 1890

page_text: Date of Application, 29th July, 1890-Accepted, 30th Aug.,
1890
COMPLETE SPECIFICATION.
An Improved Spring Governor or Regulator for Gas and other
Engines and Motors.
I PAUL MORITZ SCHIERSAND of Kappel near Chemnitz in the Kingdom of Saxony,
Germany, 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:—
My invention relates to an improved spring governor or regulator, for regulating
the speed of gas steam and other engines and motors, its object being to effect said
regulation by economising the supply, and compensating the irregularities of the
source, of the motive power employed.
In order that my invention and the manner of operating the same may be clearly
understood I have appended the accompanying sheet of drawings, in which Fig. I is
a front elevation of the apparatus forming the subject of my invention, and Figs. 2
and 3 are similar views of the same in different positions as they occur during its
operation.
I have chosen to illustrate and describe my invention as applied to a motor having
a vertical motion, but I wish it understood that it is equally applicable and effective
when used upon motors or engines having a horizontal motion or an equivalent of
either or both.
In carrying my invention into effect I attach a pin or stud a to any suitable part of
an engine or motor having a vertical traverse-such for instance as the piston cross
head, pivotted upon which is a metallic collar piece a' having on its upper surface a
pointer 6 and which is kept in a vertical position when at rest by means of a counter
weight formed upon the opposite or under side of the collar piece a¹. A straight
metallic spring d is fixed centrally and horizontally upon the collar piece a¹ in such a
manner that each end is at right angles with the pointer b, the apparatus, so far,
resembling in appearance a scale beam with its index finger. The travel of the pin a
being vertical, the appendages a¹ b, and 6 must necessarily be identical therewith.
Two castings and e each provided with an internal or female screw thread, and
fitted with adjustable tap bolts and e¹, are fixed in convenient and suitable parts of
the motor in such a manner that e¹ and engage with the ends of the spring d during.
its travel. Said castings e and f may be fixed at any angle relatively to each other
as circumstances may require but in such a manner that d in its downward course
makes contact with before f¹ for reasons to be hereinafter more fully explained.
The tap bolts e and fare for the purpose of compensating the angle of contact with
the spring d and may be raised or lowered for that purpose.
At each upward movement of the stud a the pointer bengages with a projection c
which may be connected with or form part of the throttle valve or its equivalent of the
motor, said part c being kept in a position of "shut off" by the tension of a spring
suitably attached thereto.
The manner of operating the various parts herein before described are as follows.
The spring d when commencing its downward motion as shewn by Fig. 1 is perfectly
horizontal until it comes in contact with el when it becomes deflected as shewn by
Fig. 2. The pin a having not yet completed it traverse from a to y presses upon the
spring d and against the tension thereof by reason of its having now made contact
with as well as e', until it assumes the form of a curve as shewn by Fig. 3, when
in this position the pin or stud a has reached its lowest point and immediately
commences its return journey in an upward direction, the spring d in its upward
course disengaging from and e' in an opposite manner to that in which it made
contact until it assumes its normal horizontal position, and consequently the pointer b
perfectly vertical, which at the finish of its upward course engages with the projection c

page_text: and raises it sufficiently to admit the necessary quantity of gas. Steam or other
medium employed as motive power into the cylinder or other chamber of the motor
to which the apparatus forming the subject of my invention is attached. The same
operation of the parts described occur with each cycle of the motor so long as the
motion thereof continues to be uniform, but when the motive power becomes
abnormally in excess of the work being done the uniformity of motion becomes
deranged, and racing ensues and the movements of the motor becomes faster, and the
deflection and curving of the spring d in its downward course consequently more rapid
to the extent that when performing the return or upward journey it does not regain
its equilibrium and horizontal position after breaking contact with and e quick
enough for the pointer to engage with the valve connection c consequently the
upward traverse is completed with the pointer b at about the angle shown by the
dotted lines Fig. 1 which passes c without touching it and the valve would thereforo
not be opened as in the cycle previously described. It is obvious that upon cessation
of the supply of motive power, the motor would slow down and regain its normal
speed, so that in or about the next cycle the pointer b would operate upon the valve c
in the manner first described. By this means perfect regulation of the motor is
ensured and acceleration avoided, and by the adjustment of the tap bolts f¹ and e¹ the
speed of the motor may be varied at will, as the oscillation of the spring d will be
altered thereby, and the contact between band c being regulated by the manner
in which contact is broken between d and fel an efficient and perfect control is
attained.
In the case of horizontal engines and motors, or engines and motors other than
vertical, the disposition of the pointer and the spring d relatively to the counter
weigh and the position of the castings e and f will compensate the adaptation of
my invention to almost any type of engine or motor.
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 an improved spring governor or regulator for gas and other engines and
motors the construction and use of the entire apparatus forming the subject of my
invention as and for the purposes herein set forth substantially as shewn and described,
reference being had to the accompanying drawings.
Second. In an improved spring governor or regulator for gas and other engines
and motors, the construction and use of the collar piece a¹ in combination with the
pointer and the counter-weight and spring d and the method of attaching said
parts a, b, band d by means of the stud a to an existing engine or motor, and
working in conjunction with the castings and tap bolts ef and ef respectively for
the purpose of governing and regulating the supply of the medium used as motive
power to said engine or motor substantially as and for the purposes herein described
and shewn by the accompanying drawings.
Dated this 22nd day of July 1890.
GEO. THOS. HYDE,
4, Moorfields, Fore Street, London, E.C., Agent for the Applicant.