Improvements in Governing Apparatus for Engines.
Year: 1895

page_text: Date of Application, 29th Mar., 1895
Complete Specification Left, 30th Dec., 1895-Accepted, 8th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Governing Apparatus for Engines.
We, THE BRAYTON PETROLEUM MOTOR CO. LD., of 74 Coleman Street, in
the City of London, and HERBERT TOWNSEND of 2 Albert Villas, Spruce Hill
Road, Walthamstow, in the County of Essex, Engineer, do hereby declare the
nature of this invention to be as follows:-
.
This invention relates to governing apparatus for engines wherein the throw
of an eccentric is varied in accordance with the variations of speed of the engine.
The invention is applicable to engines generally but is particularly designed
for an oil engine in which the oil is fed by a pump whose stroke is controlled by
the governor.
The governor proper is of the centrifugal type and may be arranged with the
spindle vertical or horizontal or inclined at any desired angle. The sliding sleeve
to which the governor arms are attached is controlled by a spring arranged to
resist the centrifugal action of the revolving balls. The oil pump piston or
plunger is driven by an eccentric which is connected with the governor shaft
through an intermediate piece, but which is so arranged that it can slide radially
across the said intermediate piece in order to permit of varying the throw.
A long diametrical slot is made in the eccentric extending nearly across the same
from one side to the other. The ends of this slot are inclined to the axis of the
eccentric but are parallel with each other, and in it works a bar attached to a rod
that passes centrally along the governor shaft and that is connected to the sliding
sleeve of the governor.
The said connection is such that the rod can be turned
when required without turning the sleeve. The ends of the aforesaid bar are
inclined at the same inclination as the ends of the slot in the eccentric and bear
against the ends of the said slot and thereby prevent the radial movement of the
eccentric so long as the central rod aforesaid is not moved axially. When however
the said rod is moved axially by the movements of the governor sleeve, the
eccentric is shifted radially and its throw thereby increased or decreased as the
case may be, and consequently the oil pump is made to deliver more or less oil than
before.
The driving connection between the eccentric and the governor shaft or spindle
is made through a spring pin and an inclined slot or groove in the intermediate
piece before named so arranged that a driving connection is afforded in one
direction only. This allows the eccentric to be rotated by hand when the engine is
stopped, thereby permitting the oil burner to he readily charged. A handle is
provided for rotating the eccentric for this purpose.
The tension of the spring in the governor is controlled by a suitable adjusting
screw.
When this governing apparatus is applied to oil engines of the kind described
in the Specification of the prior Patent No. 6138 of the year A.D). 1894,
the cams for working the oil valve and the exhaust valve, and the eccentric
for working the pump slide are all arranged to be driven directly by the governor
shaft.
D
OLL 1
1905
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Governing Apparatus for Engines.
We, THE BRAYTON PETROLEUM MOTOR Co. LD., of 74 Coleman Street, in
the City of London, and HERBERT TOWNSEND of 2 Albert Villas, Spruce Hill
Road, Walthamstow, in the County of Essex, Engineer, 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 :-
This invention relates to apparatus for governing or controlling the speed of
motor-engines and consists chiefly in the combination of an eccentric with a
centrifugal governor in such a manner that the throw of the eccentric is varied in
accordance with the variations of speed of the engine.
The said invention is applicable to motor-engines generally but is particularly
designed for an oil-engine in which the oil is fed by a pump whose stroke is
controlled by the governor.
Our invention is illustrated in the accompanying drawings in which
Figure 1 is a sectional side elevation of a governor for controlling two eccentrics
for a double cylinder engine.
Figure 2 is a side elevation of the centrifugal portion of the governor.
The remaining figures shew details and detached portions hereinafter described.
Like letters indicate the same parts throughout the drawings.
at A*.
A is a hollow shaft or spindle which is driven by suitable means from a convenient
rotative part of the engine and which may be arranged vertically, horizontally or
otherwise as desired. The said shaft is made in three parts united by couplings
B B are balls connected by arms B¹ with pivots B2 on the shaft A in the
usual manner so as to move freely in accordance with the variations of the
centrifugal action due to the changes in the speed of the engine, the said arms
being also connected with the sliding sleeve C.
A spring B³ is arranged to resist the centrifugal action of the revolving balls B.
The said spring bears at one end against the nut F* on a rod G hereinafter
described and at the other end against the collar H¹ Figure 5 on the screw rod H.
Figure 5 is a detached side elevation of one section of the shaft A; Figure 6 is an
end view of said section. The said rod H is provided with a hand-wheel H
whereby the tension of the spring can be regulated. When the shaft is arranged
vertically the spring may be dispensed with.
°
DD are the eccentrics which as shewn in Figure 1 are arranged on the shaft
with the centrifugal governor between them. Each of these eccentrics is connected
with the governor shaft between the part a of the coupling and the collar E which
may be an excentric for operating a slide valve for example the valve of the oil
pump. The eccentric D is so arranged that it can slide radially or across the axis
of the shaft between the coupling A* and the collar E for the purpose of varying
the length of its throw and thereby increasing or diminishing the length of stroke
of the oil-pump. A diametrical slot D¹ is made in the eccentric block D extending
Dearly across the same as shewn in Figure 3 which is a side or face view of the
eccentric. The ends of this slot are bevelled or inclined to the axis of the
eccentric but are parallel to each other, as shewn in Figure 1, and they fit
the correspondingly formed ends of a cross bar F, Figures 1, 8 and 9, Figure 8
being a detached view of the bar and a portion of its rod, and Figure 9 a face
view of the bar. This bar is attached to a rod G that extends centrally along the
axis of the governor shaft and is connected to the sliding sleeve C of the governor.
A slot is also formed in the part a of the coupling to permit the cross bar
to be drawn out of the slot in the excentric. To provide for the connection of the
sliding sleeve with the rod the said sleeve is formed in two parts secured together
by screws C² as shewn in Figure 1 and also in Figure 4 which is an end view of the

page_text: sleeve. Each of these parts has an interior projection C³ and these projections
enter a groove formed by two collars G' fixed on the rod G and fitted to slide in
the interior of the shaft A. The shaft A is slotted at A¹ to permit the required
end wise movements of the sleeve. The two cross bars Fare connected to each
other by the rod G and therefore move together.
It will be seen that by reason of the peculiar construction and arrangement of
the said eccentric and cross bar the latter in moving longitudinally acts as a cam to
move the eccentric radially or transversely so that the amount of eccentricity or
throw of the eccentric depends upon the position of the cross bar and the position
of the latter is varied by the action of the balls B according to the speed of the
engine. That is to say when the rod G is moved axially with the governor
sleeve C, each eccentric is moved radially and its throw thereby increased or
decreased as the case may be, and consequently the stroke of the oil pump is
increased or diminished and the pump is made to deliver more or less oil as
required.
For driving the governor shaft I prefer to use chain gearing. Part of a chain
wheel is shown at I loose on the shaft A the said wheel being arranged in
combination with a disc J fixed on the shaft A.
The driving connection between the chain wheel and the governor shaft or
spindle is made through a spring pin K Figures 1 and 7 so arranged that the
driving connection is afforded in one direction only. This allows the shaft A to
be rotated by hand when the engine is stopped, thereby permitting the burner of
the oil engine to be readily charged. A handle or hand wheel L is provided for
rotating the eccentric for this purpose. Figure 7 is a section on the line, a of
Figure 1.
When this governing apparatus is applied to oil engines of the kind described in
the Specification of the prior Patent No. 6138 of the year A.D. 1894, the cams for
working the oil valve and the exhaust valve, and the eccentric for working the
pump slide are all arranged to be driven directly by the governor shaft having the
centrifugal apparatus as above described.
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. The combination of an excentric with a centrifugal governor in such a
manner that the throw of the excentric will vary in accordance with the speed of
rotation of the
governor shaft.
2. The combination, with the eccentric sheave or block, of a cross bar formied
with inclined surfaces arranged to fit similar surfaces on the eccentric block and to
act thereon when the cross bar is moved along the axis of the shaft as, and for the
purpose, specified.
3. The connection of the said cross-bar with the sliding sleeve of a centrifugal
governor substantially as, and for the purpose, specified.
4. The governing or controlling apparatus constructed substantially as described
with reference to the accompanying drawings and operating as, and for the purpose,
specified.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.