Improvements in Governing or Regulating Devices for use in connection with Steam Engines.
Year: 1896

page_text: Date of Application, 22nd Aug.. 1896-Accepted, 21st Aug.. 1897
Improvements in Governing or Regulating Devices for use in
connection with Steam Engines.
I, MARTIN HANNER, of Marktstrasso Duisburgh, in the Empire of Germany,
Gentleman, 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:-
The object of the prosent invention is a contrivance applied to steam engines,
whereby the steam pressure in the cylinder, corresponding to the power required at
any particular moment, is automatically regulated through the aforesaid contrivance
by means of the centrifugal governor.
The accompanying drawings are based on the assumption that a steam engine
with a centrifugal governor is in question. It is however obvious that any steam
engine with the ordinary admission valves and governor can be fitted with the new
apparatus.
In the drawings two modes of execution of the invention are illustrated.
In the first method of execution illustrated in Figure 1, w, w', represent the bulls
of the governor which rotate with the shaft B.
Encircling the shaft B is the collar A. which is secured to the arms and balls
of the governor in any of the well known ways so that when the balls diverge
the collar is raised and when the balls converge the collar is depressed.
To the collar is articulated the inner end of the lever a, while to the outer
end of the lever a is articulated the rod b to which is attached the frine c.
Hence according as the balls of the governor diverge or converge the frame c is
raised or lowered.
Above the frame c is the casing e and beneath the same the casing, the
former being retained in its lowest position by means of the weights acting
through the rod F, and the latter in its highest position by facting through
the rod F.
The casings e', e each contain a bent lever g. These levers are kept pressed
against the walls of the casing by means of the springs D.
As soon as the governor balls inove from their normal position the frame o is moved
out of its central position, either upwards or downwards, in the manner illustrated.
The frame c then pushes against the projecting arnis of the bent levers g and causes
the other extremities of the levers marked i on the drawings to gear with the toothed
rod k. This rod k thus receives the motion of the frame c.
To the extremities of the rod kare articulated the levers 1, 1, which act upon the
admission valve. The rate of admission thus determined remains unchanged because
the frame c is free to return to the central position without again actuating the rod k,
the teeth upon the rod & being so formed as to gear with the pawls i only upon the
movement of c away from its central position and not upon its return thereto. Only

page_text: when the frame by reason of a corresponding movement of the "governor froin the
normal position is moved in either ouc or the other direction is the admission
valve again affected and thereby an altered rate of admission brought about.
In the second method of execution shown in Figures 2 to 8.
Figure 2 is a sectional elevation of the mechanism employed.
Figure 3 is a section on the line x, x.
Figure 4 is a section on the line y, y.
Figure 5 is a section of the toothed circular plates n. n, to be nfterwards
described.
Figure 6 is an elevation of one of the plates n. n, while
Figures 7 and 8 are elevations of the plates q. q', and their connections to be
afterwards described.
In Figures 2 and 3, m aud m', are toothed rods which are attached to, and partici-
pate in, the movement of the lever a, which is not shown on Figures 2 to 8 but which
is assumed to be the same as that shown in Figure 1. Gearing with the rods m, m²,
are the toothed circular plates n, n', shown in Figures 5 and 6 which are connected
by means of the rod o as shown on the drawings.
The plates n, n', are free to revolve round the sleeve which is keyed to the shaft
of the admission valve.
Upon the sleeve vand between the two plates n, n, are the plates q, q', shown in
Figures 7 and 8. These plates which are secured together by means of the two
connecting pieces 7 and 8 made heavy so as to act as counterpoises, are free to move
round the sleeve v.
To the plates q, gl, are attached pawls p, p, which are actuated by the movement
of the connecting piece o.
The sleeve vis furnished with teeth upon its lower side so as to gear with the
pawls p, pl.
I shall now proceed to describe the action of my invention with reference to the
second method of execution.
Supposing that the engine is suddenly relieved owing to several large working
implements being put out of gear the number of revolutions of the governor will
considerably increase and consequently the toothed rods m, m' will be actuated and
will cause the toothed plates n, n¹ to revolve round the sleave v thus pressing the
connecting piece o against oue of the pawls p, p¹.
The pawls p, p' will then gear with the teeth upon the sleeve u which will be caused
to rotate, thus affecting the admission of the steain.
At the same tine and conjointly with the revolution of the plates n, n' the
second pair of plates q, q' to which the pawls are attached will be rotated and tho
counterpoises and s raised accordingly.
The rate of admission of steam is thus determined and remains unchanged becau
the plates q' on account of the counterpoises r and 8 are brought back to their
original position without affecting in their return motion any counter revolution
of the sleeve v, the pawls p, p' and the lower toothed part of v being so formed
us to slide over each other without gearing, upon a return to the initial
position.
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. A regulating device for steam engines of such a nature that upon every movement
of the governor a frame e is pushed out of its central position whereby the pawli of
one of the two casings el, e'; is pressed into the toothed gearing of a rod k working on
the admission valve which is actuated therewith, whilst upon the return of the
governor to the normal position tho pawls cease to engage as the pressure of
the frame connected with the governor ceases to act, whereby the admission valvo
is caused to remain in the position so brought about until the governor again passes
beyond the normal position.

page_text: 2. The modification hereinbefore termed the second form of execution substantially
as set forth.
J. G. LORRAIN, C.P.A.,
Filing Agent.