Improvements in Governors for Regulating the Speed of Engines, Machines, and the like.
Year: 1899

page_text: Date of Application, 7th Dec.. 1899-Accepted, 18th Aug., 1900
COMPLETE SPECIFICATION.
Improvements in Governors for Regulating the Speed of Engines,
Machines, and the like.
I, ARTHUR FREDERICK EVANS, of 11, Brunswick Walk, Cambridge, Engineer,
hereby declare the nature of this invention and in what manner the same
to be performed to be particularly described and ascertained in and by the
ollowing statement:-
This invention relates to improvements in governors for regulating and
ontrolling the speed of engines, machines and the like, and has reference chiefly
o use in connection with disc flywheels.
The crank or engine
In this invention I prefer to use a disc flywheel dished to a considerable
extent in order to receive the mechanism of the governor.
shaft continues through the centre of the flywheel to a convenient distance and
is keyed or otherwise fixed to the boss of said flywheel in the usual manner.
On this boss I provide a sleeve having an arm which sleeve is free to slide on
the boss. A pin through the end of the arm and screwed into the face of the
fly-wheel prevents the said arms sliding in a circumferential direction on the
boss of the flywheel but allows it to slide laterally away from or towards the
A slot is provided through the said arm in an oblique
inner surface of the disc.
I also provide a short arm or lever pivotted
direction to the width of the arm.
at a convenient centre to the flywheel disc, said lever having an end reduced
to fit the width of the aforesaid slot. This short arm or lever has another arm
or lever attached to it at a convenient angle and extending lengthways diame-
trically. This longer arm has a weight attached to it, and at the outer end a
screwed pin and nut, attached to a coil spring, the other end of which is fixed
to the disc of the flywheel. The action of the mechanism is as follows:-when
the engine is rotating at its normal speed, the spring causes the long arm
aforesaid to rest on the sleeve, but on the speed of the engine increasing, the
long arm or lever with the weight attached is thrown away from the centre by
At the same time the shorter
centrifugal force, causing the spring to extend.
arm or lever is depressed towards the centre of the sleeve, along the obliquely
The effect of this is, that the sleeve with its arm is moved from
placed slot.
or towards the face of the flywheel, according as this short arm is moved from
or towards the centre of the flywheel and shaft. The bell crank or other lever
of the governor is made to bear against the face of the sleeve, so that the sliding
motion of the sleeve is communicated to the governor lever.
In order that this invention may be readily understood reference is made to
35 the accompanying drawings in which Fig. 1 represents an elevation of the
flywheel disc shewing the arrangement of the governor gear as hereinbefore
described. Fig. 2 is a section of Hywheel through the sliding sleeve, and Fig. 3
is. a section through the lever. In these several views A is the flywheel rim
B the flywheel boss, fixed upon the engine shaft B. C is the sleeve fixed loos
40 upon the flywheel boss B and sliding thereon. D is the lever with a weight
at its outer end, said lever being pivotted on the pin or gudgeon H and kep
in position by the screwhead and washer G. The short lever D¹, terminates i

page_text: a finger end F, which slides in the obliquely cut slot O in the arm N of the
sliding sleeve C. This sliding sleeve C is kept from revolving with the fly-
wheel, but allowed to slide along the boss B by the guide pin P. The outer end
of the long lever D is provided with a screwed hole M into which the adjustable
screw or bolt I is screwed and its position held by the lock nut J.
this screw bolt I is the coil spring K which is fixed to the flange of the flywheel
at L. The governor lever is shown in dotted lines at Q.
Attached to
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. The provision of a governor for regulating and controlling the speed of
engines, machines, and the like, substantially as and for the purpose herein set
forth and described and illustrated by the accompanying drawings.
2. The application of this invention to any form or kind of flywheel disc or
other similar part of an engine or machine, substantially as and for the purpose
herein set forth and described and illustrated by the accompanying drawings.
Dated this 24th day of November 1899.
REGINALD W. BARKER,
Applicant's Agent,
56, Ludgate Hill, London, E.C.,