AN IMPROVED APPARATUS FOR REGULATING THE SPEED OF MARINE AND OTHER ENGINES
Year: 1884

page_text: I LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Proprietor of the Patent
Industrial and Financial Agency 30 Finsbury Pavement London E.C. do hereby
declare the nature of said invention for AN IMPROVED APPARATUS FOR REGULATING
THE SPEED OF MARINE AND OTHER ENGINES a communication to me from abroad
by Fridolf Fro Almquist Constructing Naval Engineer of Stockholm in the Kingdom
of Sweden to be as follows :-
"
The object of this invention is the construction of a regulator by means of which
the speed of motors especially marine engines can be regulated in a more perfect
way than heretofore.
The invention is based upon the cataract principle in which a closed vessel
containing liquid is connected by a tube to a pump by which the liquid is pressed
up into an open reservoir or a closed air vessel while a similar tube conveys it from
the reservoir or closed air vessel to a funnel connected by a tube to the pump to be
used over again.
The overflow tube is provided with a cock by which the circulation of the liquid
may be regulated.
The liquid will remain at a certain height in the reservoir or air vessel when the
strokes of the pump are uniform but is the speed is increased the water will rise
and compress the air.
The practical application of this principle will be understood by the following
description.
The construction remains the same for all purposes but a slight alteration of the
connection may be required according to the position in which the regulator is
placed.
When it is connected to a horizontal steam pipe the reservoir is enclosed in a
cylindrical vessel covered by a lid the reservoir being open and provided with
a piston the rod of which passes freely through the cover of the outer vessel and
guided by bearings in the steam pipe, the steam passes into both vessels which are
strong enough to resist the pressure.
In the middle of the piston rod a connecting rod the other end of which is
attached to the throttle is fixed whereby when the piston ascends the valve is
closed.

page_text: In large engines with heavy valves a special arrangement is made whereby the
steam closes the throttle valve the governor regulating the extent it shall open or
close For this reason both vessels should be placed immediately. under the steam
chest of an auxiliary engine with double valves one governed by the regulator and
the other by the engine itself.
The piston rod is held down by a conical spiral spring the base of which is fixed
to the top of the outer vessel the apex resting on the back of the piston.
A cock underneath the vessels regulated by a spindle controls the escape of the
liquid which when screwed down causes the piston to rise and shut off steam.
As both the vessels contain water the piston is not packed the small leakage :
which occurs being of no importance.
A principle part of the regulator is a cock by means of which the isochronism of
the regulator as well as the posision of the valve in the steam pipe and consequently
the speed of the motor is regulated.
It consists of a pipe connecting the two pipes (the supply and the return)
provided with a puppet valve regulated by a spindle A spiral spring presses it
against this spindle while another spindle placed opposite regulates the tension of
this spring as required The isochronism is thus regulated by modifying more or
less the tension of the spiral spring and the position of the throttle valve by
opening or closing the puppet valve In case a sudden increase of speed occurs the
increased pressure actuates this valve allowing the liquid to return without passing
through the reservoir or moving the regulator.
When applied to a vertical steam pipe the vessels arranged as before are fitted
to a knee pipe connected to the vertical steam pipe the only other addition being
two connecting links.
A slide valve may be used instead of a throttle in which the dispensing with
the connecting links is the only modification required.
The regulator may be placed directly under the slide box of a small steam engine
the steam communicating with both the vessels The slide valve being of small
size and weight has only to open one or the other of the steam channels to the
steam cylinder whose piston will at once rise or fall.
"
This piston is by means of connecting links in connection with the outer large
slide in the slide box the whole forming a so called " seroo motor regulated by
the said regulator.
This invention differs from others in that no centrifugal power is used, it can be
placed anywhere on account of its small size, and is not dependant upon change of
temperature.
The advantages of this regulator are
1. Friction is reduced to a minimum.
2. The isochronism can be adjusted according to requirements.
3. No centrifugal balls or weights are used whereby the action is independant of
the rolling of the ship or the vibration of the engine.
& It can be applied to any existing engine even where no rotary motion takes

page_text: and other Engines.
I LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Proprietor of the Patent
Industrial and Financial Agency, 30 Finsbury Pavement London E.C. do hereby
declare the nature of said invention for "AN IMPROVED APPARATUS FOR REGULATING
THE SPEED OF MARINE AND OTHER ENGINES " a communication to me from abroad
by Fridolf Fro Almquist, Constructing Naval Engineer of Stockholm in the Kingdom
of Sweden 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 this invention is the construction of a regulator by means of which
the speed of motors especially marine engines can be regulated in a more perfect
way than heretofore.
The invention is based upon the cataract principle in which a closed vessel P
Fig. 2 containing liquid is connected by a tube a to a pump B by which the liquid
is pressed up into the closed air vessel P Fig. 2 or an open reservoir A. Fig. 1.
while a similar tube b conveys it from the reservoir or closed vessel to a funnel D
connected by the tube b to the pump to be used over again. The overflow tube b
is provided with a cock c by which the circulation of liquid can be regulated.
The liquid will remain at a certain height in the reservoir or air vessel when the
strokes of the pump are uniform but if the speed is increased the water will rise
and compress the air.
.
The practical application of this principle will be understood by the following
description.
The construction remains the same for all purposes but a slight alteration may
be required according to the position in which the regulator is placed.
When connected to a horizontal steam pipe E. Fig. 3. the reservoir A. is enclosed
in a cylindrical vessel D covered by a lid, the reservoir being open and provided
with a piston m the rod h of which passes freely through the cover of the outer
vessel and is guided by bearings i in the steam pipe E, the steam passes into both
vessels which are strong enough to resist the pressure.
In the middle of the piston rod a connecting rod is secured the other end of
which is attached to the throttle F whereby when the piston ascends the valve is
closed.
In large engines with heavy valves a special arrangement is made whereby the
steam closes the throttle valve the governor regulating the extent it shall open or
close For this reason both vessels should be placed immediately under the steam
chest of an auxiliary engine with double valves one governed by the regulator and
the other by the engine itself.
The piston rod is held down by a conical spiral spring the base of which is
fixed to the top of the outer vessel the apex resting on the back of the piston.
A cock c underneath the vessel regulated by a spindle controls the escape of
the liquid which when screwed down causes the piston to rise and shut off steam.
As both the vessels contain water the piston is not packed the small leakage
which occurs being of no importance.
A principle part of the regulator is a cock Fig. 7 by means of which the
isachronism of the regulator as well as the position of the valve in the steam pipe
and consequently the speed of the motor is regulated.

page_text: '
•
It consists of a pipe connecting the supply pipe a and the return pipe b, provided
with a puppet valve regulated by a spindle. A spiral spring pressos it against this
spindle while another spindle placed opposite regulates the tension of this spring
as required.
The isachronism is thus regulated by modifying more or less the tension of the
spiral spring and the position of the throttle valve by opening or closing the puppet
valve. In case a sudden increase of speed occurs the increased pressure actuates
this valve not allowing the liquid to return without passing through the reservoir
or moving the regulator.
When applied to a vertical steam pipe the vessels arranged as before are fitted
to a knce pipe connected to the vertical steam pipe the only other addition being
two connecting links & Fig. 4.
A slide valve Figs. 5 & 6 may be used instead of a throttle in which the omission
of the connecting links is the only modification required. The regulator D may
be placed directly under the slide box of a small engine the steam communicating
with both the vessels The slide valve being of small size and weight has only to
open one or other of the steam channels to the steam cylinder whose piston will at
once rise or fall.
This piston is by means of connecting links in connection with the outer, large
slide in the slide box the whole forming a so called "Seroo" motor regulated by
the said regulator.
This invention differs from others in that no centrifugal power is used it can be
placed anywhere on account of its small size, and is not dependant upon change
of temperature.
The advantages of this regulator are
1. Friction is reduced to a minimum.
2. The isachronism can be adjusted according to requirements.
3. No centrifugal balls or weights are used whereby the action is independant of
the rolling of the ship, or the vibration of the engine.
4. It can be applied to any existing engine even where no rotary motion takes
place.
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
1st The apparatus for regulating the speed of marine and other engines, consisting
of reservoir A enclosed in outer case D provided with piston m the rod h of which
actuates the throttle F in the steam pipe E, in connection with a pump which
circulates the water through the apparatus, the flow being controled by cock c
which when screwed up causes the water in the reservoir A and consequently the
piston m to rise and slacken or stop the engine as before described and illustrated
in Figs. 3 and 4.
2nd The modification shown in Figs. 5 and 6 in which a slide is substituted for
a throttle valve as hereinbefore described.
3rd The arrangement shown in Fig. 7 for regulating the isacbronism of the
regulator, consisting of a puppet valve in a short pipe connecting the supply and
return pipes, balanced by spiral springs adjusted so that in case a sudden increase
of speed occurs, the increased speed will close the valve and not allow the liquid
to return without passing through or moving the regulator.