Find Fressure motor, Applicable as an Auxmary in Connection with Engine Reversing Gear, Governors, and the like, and also for Working Steering Gear, Winches, and similar Machinery.
Year: 1887

page_text: Date of Application, 10th Mar, 1887
Specification Accepted, 10th Mar., 1888
proved Find Fressure motor, Applicable as an Auxmary in
Connection with Engine Reversing Gear, Governors, and the
like, and also for Working Steering Gear, Winches, and similar
Machinery.
I GEORGE FREDERICK REDFERN, of the General Patent Office, No. 4, South
Street, Finsbury, in the County of Middlesex, Patent Agent, do hereby declare the
nature of this invention (a communication from abroad by Nestor Fouquemberg, of
Wasmes, in the Kingdom of Belgium, 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 an auxiliary motor or apparatus for reversing the action
of locomotives and other engines; for operating the rudders of vessels; for increasing
the effectiveness of governors and for other like purposes.
In order to enable the invention to be fully understood I will describe how the
same can with advantage be carried into practical effect by reference to the accoin-
panying drawings in which figures 1 to 5 and figures 1 and 2ª, represent the
application of the invention to locomotive engines; figures 6 to 8, shew its application
to centrifugal governors and Figures 9 to 15, shew its application to a winch or
hoisting engine.
I will first describe the application of the invention for reversing the action of
locomotives.
The apparatus is represented in figures 1, 2 1ª and 25, of the drawings. The motor
cylinder D, which is under the control of the engineer, is fixed to the quadrant R.
The engineer has scarcely any other force to overcome than that of the slide-valve the
steam piston serving as an auxiliary means for effecting the reversing of the engine.
The movements of these two parts are connected one with the other in such a manner
that the piston closely follows all the movements of the lever B. For this purpose the
lever is made with an eccentric socket O, which receives another eccentric S, formed
on the moveable shaft H. This shaft, is also formed with a lever A, which is driven
by the motor piston. This movement is repeated by another lever 1, which transmits

page_text: it to the shaft of the reversing gear. The eccentric O is loose upon the eccentric S.
The slide-valve of the motor cylinder is operated by the eccentric ring C. In its
mean position the slide of the slide-valve covers the outer side of the two ports
in such a manner as to avoid any rush of steam to the cylinder but leaves them
slightly uncovered inside to permit a constant flow of the steam inside.
It will be readily understood by reference to figure 3, that when the centres O and S,
of the two eccentrics are in a straight line with the levers A and B, the whole
arrangement will be at rest; but as soon as the lever B, is moved to B¹, for example,
the eccentric O sliding on the eccentric S, will come into the position shewn at 0¹,
and move the slide towards the left hand side. The steam reaches the face D, of the
piston and the latter immediately operates the lever A, rotates the shaft H, with its
eccentric S, bringing back the eccentric O¹, to O at the centre of the shaft H.
The levers A and B, will then be in a straight line with the eccentrics O and S.
The slide is brought back to its mean position, closes the admission of steam and all
movement stops. The same effect is produced by any displacement of the lever B, in
a left or right hand direction. The motor is thus under the most complete control of
the hand of the engineer, to go ahead, turn astern, and stop at the same time as the
starting lever, which lever can easily be placed in any notch of the reversing quadraut.
The lever B, carries two flexible stops K, between which is placed the extension J, of
the lever A they serve to limit the stroke of the lever B, to that of the distributing
slide valve and to allow the engineer to add his force to that of the motor.
The lever B, carries a spring catch-rod L, which serves to hold it at any required
notel of the quadrant. A second catch-rod M, connected to the former rod by a
catch, rises therewith but falls again independently into a notch in the sector-like
end J, of the lever A and fixes it. The two levers A and B are in this manner
locked firmly together and the whole arrangement remains firmly held notwith-
standing the action of the slot of the link motion.
The effect of covering the outside of the ports by the slide as hereinbefore described
would be to interfere with this locking action if the movement were to stop as soon
as the port is covered; the notch being in the middle of the head of the lever
would not come just under the bolt but the impetus which is communicated to the
hody of the piston and to the moving parts causes the slide to go slightly beyond this
point and the notch passes under the bolt which immediately engages it.
A screw P placed inside the quadrant R and operated by a hand wheel N allows the
reversing motion to be worked by hand in case the steam apparatus should get out of
order and of working without the aid of the motor.
It is then only necessary to lower the two binged ring bolts Z moving on a pivot y
and carried by the nut of the screw P in order to hook the lever B which is
previously firmly connected to the lever A by a bolt G and the reversing of the
motion can then be effected by hand by operating the screw P.
Figures I and II represent the two hinged ring bolts attached to the lever B in
order to draw them away by means of the scrow P.
Figures I and II shew the position of the ring bolts when the apparatus is working
with steam or otherwise.
In Figures 111ª, 1° II, I and II, A is the lever connected to the steam piston D,
B the lever operated by the engineer, R. the quadrant with notches for the lever B,
P the screw for the hand motion, N the hand wheel to turn the screw P, Q the nut on
the screw P carrying the articulated ring bolts Z, y the pivot on which the ring bolts
are articulated, J the sector like end of the lever A, L the catch-rod to fix the lever B
in the notches of the quadrant R.
t is the spring to assist the catch-rod L to enter the notches of the quadrant R.
M is the catch-rod to fix the lever A to the lever B so as to remain firmly held
notwithstanding the action of the slot of the link motion, the spring to assist the
catch-rod M to enter the notch of the sector-like enil J independently of the catch-
rod I, G the holt fixing the lever A to the lever B in case the whole arrangement is
working by means of the screw P and the articulated ring bolts Z.
Although the apparatus as described is more especially intended for locomotive

page_text: engines, I reserve to myself its application to any engine having a reversing
action.
By reason of the eccentrics the apparatus has, over other arrangements, the
advantage that it can be placed directly in the midst of the reversing gear without
requiring any intermediate transmitting mechanism whereby it is rendered of general
application. The motor can be horizontal, inclined or vertical according to require-
ments. It can also be placed at a distance from the rest of the apparatus as
represented for example in figure 4, in which the distributing valve box is connected
with the motor cylinder D, by pipes U and V.
The motor can be provided with a cataract F of air, water, oil, glycerine or other
suitable fluid to moderate the movement as represented for example in figure 5. In
general, the motor whether driven by steam, compressed air, water under pressure,
relative vacuum or any fluid can serve to move a shaft H, so as to cause it to
exactly follow the indications of an index having scarcely any other force to
overcome than that of the slide-valve of the motor and which is consequently easy
to operate either by hand or by means of a governor, an electric motor, etc.
This shaft H, may be an intermediate shaft or that of an engine's reversing gear,
of a vessel's rudder, of an engine's expansion gear, of an engine's distributing gear,
of valves for regulating the admission of steam or of starting gear, etc.
in order to illustrate what has just been stated I have shewn as an example in
figures 6, 7 and 8, the application of this arrangement to a centrifugal governor
which it is desired to render more powerful without increasing the dimensions.
The small motor D, is provided with a small cataract F, which serves to moderato
its movement. In illustrating this application all the parts of the apparatus herein-
before described and represented in sheet 1 are shewn. The starting lever B, is
moved by the sliding-sleeve of the governor, its eccentric socket
eccentric ring C driving the distributing gear of the small motor.
operates the
The piston of this motor actuates the end of the lever A, the other end of which
transmits movement to the object to be operated. This lever A, is keyed on a shaft H,
also carrying an eccentric S, rotating in the interior of the eccentric 0, in order to
always bring the centres and S, in a line with the levers A and B, as soon as the
sliding-sleeve acts on the lever B. The effect is the same as in the apparatus herein-
before described. All movements of the sliding-sleeve of the governor are received
by the motor piston which transmits them to the object to be operated with all the
force of which it is capable. The governor can be of any suitable construction, such
as a centrifugal compressed air, hydraulic, relative vacuum or electric governor and
can be used to actuate an engine's distributing gear, an expansion gear, regulating
valves, hydraulic sluice valves or the like.
This arrangement can also be applied to revolving motors, in order to subject the
motor to revolve in the way, at the speed or by any law indicated by an index, at the
disposition of the engineer or of a suitable apparatus. In order to indicate clearly
what is meant, I will describe this application of the invention to the small winch or
hoist-motor represented in figures 9, 10 and 11.
In this case the small motor D, drives the crank A, of the shaft H, of a winch or
hoist. A counter erank a is provided of which the pin which is eccentric to the axis
of the shaft H, represents the eccentric S, within the eccentric O, which operates the
eccentric ring C, of the distributing gear; the eccentrics O and S of the apparatus are
similar to those herein before described and shewn in figures 1, 2 and 3.
I will now describe the operation by reference to figures 12 and 13. It will be
easily understood that the engineer's lever B, may be replaced by a crank handle B',
for causing the eccentric socket 0, to turn to the right or the left hand and to
displace constantly the distributing slide valve. The motor piston follows immo-
diately and moves along the interior eccentric counter-crank S, tending always to
replace the slide in the centre and to stop the movement. The motor thus controlled
follows all the indications of the crank handle the speed and the direction of
movement of which it takes and only stops with it. It will also be understood that
the crank handle B', can be substituted by a toothed pinion ẞ (figures 9, 10, and 11,)

page_text: on the eccentric O connected with gearing y on the occentric bar: this gearing is
itself provided with the crank handle serving to turn it. This crank handle can also
be replaced by a pulley which will allow of it being operated from a distance. In
this case however it is advantageous to employ the connected motor as shown in
figure 15. The counter-crank then serves for the distribution of the two cylinders
and the crank handle B', is replaced directly, (as shewn in figure 15) by a pulley 8
driven from a distance by a pulley Z.
It will be easily seen that a greater number of motor cylinders could be grouped
around a crank plate, which motor cylinders could be controlled by the same counter
crank arranged as just described.
The pulley on the eccentric O ean also be replaced by a small electric motor,
driven from a distance by any suitable electric generator.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is ;-
1. The employment of the eccentrics fixed and turning one within the other and
self compensating so as to always return to the circle in such a manner as to control
the movement of the motor or subject it to that of the starting lever.
2. The employment of the locking bolt serving to firmly connect the two levers of
the apparatus in order to keep it at rest during the working of the engine.
. The hand motion which allows the whole arrangement to he worked without the
aid of the motor, either by a screw, as shewn in the drawing or by other suitable
means.