IMPROVEMENTS IN GOVERNORS FOR MOTIVE-POWER ENGINES
Year: 1876

page_text: LETTERS PATENT to William Lloyd Wise, of Chandos Chambers, Adelphi,
in the County of Middlessex, for the Invention of "IMPROVEMENTS IN
GOVERNORS FOR MOTIVE-POWER ENGINES." A communication from abroad by
Pafnuty Chebischef, of Saint Petersburg, Russia.
Sealed the 23rd March 1877, and dated the 29th September 1876.
PROVISIONAL SPECIFICATION left by the said William Lloyd Wise at the
Office of the Commissioners of Patents on the 29th September 1876.
WILLIAM LLOYD WISE, of Chandos Chambers, Adelphi, in the County of Middlesex.
"IMPROVEMENTS IN GOVERNORS FOR MOTIVE-POWER ENGINES." A communication
from abroad by Pafnuty Chebischef, of Saint Petersburg, Russia.
This Invention of improvements in governors for motive-power engines is
designed to produce a governor of extremne sensitiveness. In this governor two
levers balanced as herein-after mentioned are used. Each of these two levers
has its fulcrum at a point intermediate between the two extremities of the lever.
The levers are jointed to the upper end of the rotating vertical spindle of the
governor, their respective fulcrum pins passing in the same horizontal plane and
parallel to each other, but at opposite sides of the vertical axis of the spindle,
through a knob forming the spindle terminal. The upper arms of the two levers
cross each other, so that the two levers together when in their normal relative
positions somewhat resemble the letter x.
The extremities of the levers are constructed and weighted as follows:-The
upper arm of each terminates in a weighted ball. The lower arm terminates in a
weighted hook or elbow; the extremity of each hook is connected by a couple of
links to the sleeve, whence the throttle valve may be actuated in the ordinary way.
Each lever is so made and its weight is so disposed that assuming it to be freely
suspended at the axial point of its fulcrum it will assume or will preserve a position
in which a straight line drawn through the axis of the fulcrum pin hole and through
the axis of the link pin hole in the bent end of the lever will be vertical, the portion
of pin belonging to each hole being therein, and that assuming the lever to be freely.
suspended at the axial point of its fulcrum, and that to the hole in the bent end a
weight be added equivalent to four-ninths of the weight of the two links, whereby
that end is to be connected to the sleeve, then a straight line drawn through the
077

page_text: axis of the fulcrum pin hole and through the axis of the link pin hole in the bent
end of the lever will be horizontal.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Lloyd Wise in the Great Seal Patent Office on the 29th
March 1877.
WILLIAM LLOYD WISE, of Chandos Chambers, Adelphi, in the County of Middle-
"IMPROVEMENTS IN GOVERNORS FOR MOTIVE-POWER ENGINES." A communi-
cation from abroad by Pafnuty Chebischef, of Saint Petersburg, Russia.
sex.
This Invention of improvements in governors for motive-power engines is designed
to produce a governor of extreme sensitiveness. In this governor two levers
balanced or proportioned as herein-after mentioned are used. Each of these two
levers has its fulcrum at a point intermediate between the two extremities of the
lever. The levers are jointed to the upper end of the rotating vertical spindle of
the governor, their respective fulcrum pins passing in the same horizontal plane and
parallel to each other, but at opposite sides of the vertical axis of the spindle,
through a knob forming the spindle terminal. The upper arms of the two levers
cross each other, so that the two levers together when in their normal relative
positions somewhat resemble the letter x.
The extremities of the levers are constructed and weighted as follows:-The
upper arm of each terminates in a weight or ball. The lower arm terminates in a
hook elbow or bent arm; the extremity of each hook or bent arm is connected by
a link or links to the sleeve, whence the throttle valve may be actuated in the
ordinary way. Each lever is so made and its weight is so disposed, that assuming
it to be freely suspended at the axial point of its fulcrum, it will assume or will
preserve a position in which the ball shaped extremity will be lowermost, and a
straight line drawn through the axis of the fulcrum pin hole and through the axis
of the link pin hole in the bent end of the lever will be vertical, the portion of pin
belonging to each hole being therein, and that assuming the lever to be freely
suspended at the axial point of its fulcrum, and that to the hole in the bent end a
weight be added equivalent to four ninths of the weight of the link or links,
whereby that end is to be connected to the sleeve, then a straight line drawn through
the axis of the fulcrum pin hole and through the axis of the link pin hole in the
bent end of the lever will be horizontal.
Such being the nature of the said Invention, I now proceed to describe the manner
of carrying it into practical effect.
Fig. 1, (Sheet 1), of the accompanying Drawings is a vertical sectional elevation
of the improved governor, with throttle valve and means for operating the same;
Fig. 2 is a plan view of one of the levers.
Fig. 3, (Sheet 2), is a plan view taken in section in the line A, B, of Fig. 1.
Fig. 4 is a sectional plan through the throttle valve and other parts.
Fig. 5 is a vertical sectional view of a portion of the apparatus taken at right
angles to Fig. 1.
Fig. 6 is a view partly in section in the line C, D, of Fig. 5, and partly in
elevation.
Fig. 7 is a side elevation of the spindle knob or terminal; Fig. 8 is a plan of
the same.
Fig. 9 is a plan of one arrangement of ring and lever for operating the throttle
valve rod from the sleeve of the governor; Fig. 10 is a sectional view of the same.
Fig. 11 is a plan view of a modified arrangement for the same purpose, and Fig. 12
is a sectional view thereof.
Fig. 13 is a plan shewing the sleeve and one of the double rings.
Fig. 14 is a reduced side elevation of one of the levers,

page_text: Centre lines and various positions of the parts are indicated by dots and short
lines alternating thus
.
a is the frame of the governor; b is the spindle; o the step in which it works;
d, e, bevil gear through which the spindle is actuated; the wheel d has in this
instance 20 teeth, the wheel e, 16 teeth; f shaft carrying the bevil wheel d and the
driving pulley g; h knob forming the spindle terminal, and shewn separately in
side elevation in Fig. 7, and in plan in Fig. 8; i sleeve fitting truly on the spindle,
and capable of end movement thereon limited by the knob h and the shoulder k ;
and m two levers proportioned to comply with the conditions herein-before
specified, and with the conditions following or approximately so, that is to say,
referring to the small view Fig. 14, (1), CBF = FBG = 20° 54'. (2) CBD = 77°
42′ corresponds to the middle position of the sleeve. (3) CD = 0.891.
CB
-
Referring again to the other views, represents the fulcrum of lever ; m¹,
fulcrum of lever m; 1, weight or ball at upper end of lever ; m², weight or ball at
upper end of lever m; 13, hook or curved arm of lever ; m³, hook or curved arm of
lever m; n, link connecting the extremity of the hook or curved arm of lever / to the
sleeve i; o, link connecting the extremity of the hook or curved arm of the lever m
to the sleeve i; p, ring on sleeve i; q, forked lever jointed to the said ring, either as
shown in Figure 9, or as shown in Figure 11; r, link jointed at to the frame a,
and at to the lever q; 8, valve rod; t, equilibrium valve; u, valve box or case;
u, lining; v, swivel stop valve.
It will be evident that irregularity of speed of the engine will have the effect of
causing the levers l, m, to raise or lower the sleeve, and thus to actuate the valve t
in the ordinary manner.
Having thus described the nature of the said Invention and explained the manner
of carrying the same into practical effect, I would have it understood that I am
aware that the governor herein-before described is in many respects similar to
governors already known; also that I do not claim the arrangement described for
imparting motion to the spindle b, nor do I claim as being new in a governor the
use of a spindle and sleeve, or the arrangement for operating the throttle valve from
the sleeve i; but what I consider to be novel and original, and therefore claim as the
Invention secured to me by the herein-before in part recited Letters Patent is, the
use in combination with the spindle b and sleeve i of the levers and m and links n
and o, the said levers and links being proportioned, arranged, and applied, sub-
stantially as herein-before described for the purpose specified.
In witness whereof, I, the said William Lloyd Wise, have hereunto set my hand
and seal, this Twenty-ninth day of March, in the year of our Lord one
thousand eight hundred and seventy-seven.
Witness,
F. J. BROUGHAM.
W. LLOYD WISE. (L.S.)