Speed Regulating Mechanism for Petroleum and other Motors.
Year: 1897

page_text: Date of Application, 2nd Oct., 1896-Accepted, 14th Nov., 1896
COMPLETE SPECIFICATION.
Speed Regulating Mechanism for Petroleum and other Motors.
We, RICHARD HORNSBY & SONS LIMITED, of Spittlegate Iron Works,
Grantham, in the County of Lincoln, Engineers, do hereby declare the nature of
this invention (a communication to us by Charles William Burton, of Paris, in the
Republic of France, Engineer,) 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 mechanism for regulating the speed of explosion or
combustion engines or motors such, for instance, as petroleum, or vapour engines
which require a feed pump.
According to our invention we employ a can operated by the motor governor
and having for object to regulate the stroke of the pump and consequently i's
delivery. The variation in the delivery is obtained by causing the plunger of the
pump to make a longer or shorter stroke as required.
In carrying out our invention the working stroke of the pump plunger is
obtained by the action of a lever the stroke of which is fixed or invariable
and the out or return stroke of the plunger is effected by a spiral or other
spring.
It will be obvious that the longer the stroke of the pump plunger, the larger
the quantity of oil or other fuel fed to the motor. And, on the contrary, the more
this stroke is diminished in length, the smaller the quantity of oil injected into the
motor.
To govern the speed of the motor, therefore, it is necessary to furnish the
cylinder or vaporizer with only sufficient oil, or other fluid, necessary to overcome
the resistance encountered by the motor.
As before stated the out stroke of the pump is effected by means of a spring.
This spring acts upon a rod formed in one with the plunger and as a continuation
of the same.
The rod strikes against the cam and the length of the stroke of the
plunger depends upon the position of this cam which varies according to the
position of the governor.
To enable our invention to be fully understood we will describe it by reference
to the accompanying drawing, in which :-
Figure 1 is an elevation of an arrangement of mechanism illustrating our
invention:
Figure 2 is a side view of the same:
Similar letters of reference refer to the same parts in both figures.
a is the cam mounted on the spindle b and operated by the governor through the
medium of the rod c acting on the lever 6', or it may be operated by any other
suitable intermediate mechanism.
A lever d, the stroke of which is fixed or invariable and which is actuated by a
cam, or by other suitable mechanism, in connection with the petroleum or other
motor, works in the cranked piece e in such a manner that when it descends it
strikes against the end of the plunger f to which it imparts its movement thus
effecting the working stroke of the plunger in the pump g.
The outward or returu stroke of the plunger is effected by means of the
spring h.
There is sufficient play or space in the crauked piece e to enable the lever d to
effect its stroke when the said piece is in a certain position. This is so when the
governor is completely open and in this case the lever d completes its stroke

page_text: without having any action on the said piece e and consequently on the plunger f
which, therefore, obviously does not force any oil into the motor. When the
governor is closed, the contrary action takes place. The position of the cam in
this case is such that the pump plunger red fis moved sufficiently outward to cause
the lever d to. act on it during the whole stroke.
In any other intermediate position of the governor, and of the cam, a
correspondingly altered stroke is given to the plunger.
It will be obvious that the precise construction of our improved mechanism can
he altered without departing from the principle of our invention the arrangement
shewn in the drawing being simply for the purpose of ilustration.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In speed regulating mechanism for petroleum and other motors of the kind
described a cam operated by the governor of the motor for the purpose of
regulating the stroke and consequently the delivery of the pump by forming an
adjustable stop to the plunger of the pump, substantially as, and for the purpose,
described.
2. The improved speed regulating mechanism for petroleum and other motors
herein before described and illustrated in the accompanying drawing.
Dated the 2nd day of October 1896.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.