Obtaining and Preventing Reciprocating, Vibratory, and Gyratory Motion.
Year: 1893

page_text: Date of Application, 25th Oct., 1893
Complete Specification Left, 25th July, 1894-4ccepted, 20th Oct., 1894
PROVISIONAL SPECIFICATION.
Obtaining and Preventing Reciprocating, Vibratory, and Gyratory
Motion.
I WILLIAM WORBY BEAUMONT of 100 Palace Road, Tulse Hill, London,
Civil Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in machinery in which vibratory gyratory
or reciprocating movements are required or occur or in which these movements
combined with rotary movement is desirable, and to the apparatus by means of
which such movements are brought about. Partly my invention relates to
improvements in the apparatus described in the Specification of the Patent granted
to me in 1892 and numbered 9953. In that Specification I described mechanism
hereafter called a vibromotor for obtaining gyratory and other movements by
means of a weight rotating excentrically upon or with a spindle or support
attached to the thing to which gyratory vibratory or other such motion is to be
imparted such mechanisın or apparatus being at the same time the means of
absorbing and utilizing the cause of harmful vibration commonly set up by the
hitherto employed mechanism.
According to one form of my present invention I obtain such motion by a
vibromotor consisting essentially of an electrically operated unsymmetric weight
which may be the rotative field magnets of an electric motor revolving on or with
a fixed or rotating spindle or mechanism or may be the weight so brought into use
aided by other weight which may automatically change its radius of rotation. By
a modification of my invention I may employ a water or air motor having an
unsymmetric part such motor rotating on or with a fixed or rotating shaft, spindle,
or mechanism and the means of supply of air or fluid may be the spindle upon or
with which such motor or apparatus works.
According to another modification of my invention I obtain periodic variation
in the character of the motion obtained by the employment of more than one such
apparatus as that described having differential rates of rotation, and in some cases
I employ more than one apparatus or vibromotor working at the same speed in
connection with one of the things to be moved so as to secure the motion required.
According to another modification of my invention 1 mount some kinds of
machinery in such a way as to cause or permit a controlled vibratory reciprocating
or gyrating motion so that undesired vibratory motion may be eliminated or
modified and in some cases to cause the tendency to such undesired motion to
contribute to that which is desired.
For instance I mount an engine or other motor upon some support which may be
a bed or frame capable of free or restricted movement within a desired range or
range sufficient to dissipate harmlessly the momentum due to the force active in
producing undesired vibration, or such engine or motor may be mounted on
hangers, links or radius bars or cam or excentric rollers or supports so that a
compound motion due to the said momentum may set up harmless motion and also
prevent vibration of buildings or floors.
The motion set up by such inertia of rest of some parts or of momentum of
others may in some cases be used advantageously as before stated and in other
cases a vibromotor or vibromotors may be employed to set up motion which will
oppose, interfere with or otherwise be out of step or harmony with nullify or
modify harmful or undesirable vibration.

page_text: The motor in such cases is so connected to whatever it drives by suitable
articulated or flexible or jointed connections.
In some cases 1 mount the apparatus to be moved on pendula of different
lengths so that they have different periods and in some cases where the horizontal
form of vibromotor is used I mount that which is to be moved on spring supports
or suspenders or partly on supports and supports or suspenders being in some cases
flexible or acting as springs both laterally and in the direction of their length.
According to another modification of my invention I give to rotating screens a
vibratory or gyratory motion to increase their effectiveness.
To prevent or modify the effects of synchroneity between the period relating to the
length of the suspenders of sieves & the like and the speed of rotation of the vibro-
motor when starting gradually from rest to the full speed I mount the unbalanced
weight of the vibromotor on an arm which is provided with a spring of suitable
character so that the weight is pushed towards its centre of rotation as it decreases
in speed when stopped, and so that its full radius & therefore full effect, is not
reached until the speed of rotation is above that of the suspenders as pendula. By
the same means increase of stroke of the thing moved may be obtained with
increase of speed. In some cases I employ suspenders of different length and
period as above mentioned for this purpose & in some cases I joint the vibromotor
arm with a similar object.
Dated this 25th day of October 1893.
COMPLETE SPECIFICATION.
Obtaining and Preventing Reciprocating, Vibratory, and Gyratory
Motion.
I, WILLIAM WORBY BEAUMONT of 100 Palace Road, Tulse Hill, London,
Civil 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:-
My invention relates to improvements in machinery in which vibratory, gyratory
or reciprocating movements are required or occur or in which these movements
combined with rotatory movement are desirable and to the apparatus by means of
which such movements are brought about. Partly my invention relates to improve-
ments in the apparatus described in the Specification of the Patent granted to me
in 1892 and numbered 9953. In that Specification I describe mechanism herein-
after called a vibromotor for obtaining gyratory and other movements by means of
a weight rotating excentrically upon or with a spindle or support attached to the
thing to which gyratory, vibratory or other such motion is to be imparted such
mechanism or apparatus being at the same time the means of absorbing and
utilising the cause of harmful vibration commonly set up by the hitherto employed
mechanism.
According to one form of my present invention I obtain such motion by a vibro-
motor consisting essentially of an electrically operated unsymmetric weight which
may be the rotative field magnets of an electric motor revolving on or with a fixed
or rotating spindle or mechanism or may be the weight so brought into use aided by
other weight which may automatically change its radius of rotation.
By a modification of my invention 1 may employ a water or air motor having an
unsymmetric part or parts which may be the case of such motor rotating on or with
a fixed or rotating shaft, spindle or mechanism and the means of supply of air or
fluid may be the spindle upon or with which such motor or apparatus works.
According to another modification of my invention I obtain periodic variation in
the character of the motion obtained by the employment of more than one such
apparatus as that described having differential rates of rotation.

page_text: In some cases I employ more than one apparatus or vibromotor working at the
same speed in connection with one of the things to be moved so as to secure the
motion required.
According to another modification of my invention I mount some kinds of
machinery in such a way as to cause or permit a controlled vibratory, reciprocating
or gyrating motion in some parts so that undesired vibratory motion may be
eliminated or modified in other parts. In some cases I cause the tendency to such
undesired motion to contribute to that which is desired. For instance I mount an
engine or other motor upon some support which may be a bed or frame capable of
free or restricted movement within a desired range or range sufficient to dissipate
harmlessly the momentum due to the force active in producing undesired vibration.
An engine or motor may be mounted on hangers and the frame constitute the
hangers or it may be hung by separate links or radius bars or rollers or supports so
that the said momentum may set up harmless motion and so prevent vibration of
buildings or floors. The motion set up by such inertia of rest of some parts or of
momentum of others may in some cases be used advantageously as before stated.
For instance the motion may be restricted by the work done in operating a bilge
pump or in overcoming the inertia of sliding or suspended parts.
In other cases a vibromotor or vibromotors may be employed to set up or tend to
set up motion which will oppose, interfere with, be out of step or harmony with or
otherwise nullify or modify harmful or undesirable vibration.
The motor in the before mentioned cases, when it does not transmit power by
means of belts, ropes or gearing in a suitable direction, is connected to whatever it
drives by suitable articulated or flexible connections, except when motor and driven
machine are on one bedplate or frame in which case the inertia of the whole would
be utilised for the purposes mentioned. The said connection for power transmission
may be a Hook's joint.
In some cases I mount the apparatus to be moved on pendula of different lengths
so that they have different periods and in some cases where the horizontal form of
vibromotor is used I mount that which is to be moved on spring supports or
suspenders or partly on supports and partly on suspenders, the supports or the
suspenders being in some cases flexible or acting as springs both laterally and in
the direction of their length; such suspenders being steel rods or wires formed into
spiral springs in part of their length.
According to another modification of my invention I give to rotating screens a
vibratory or gyratory motion to increase their effectiveness by means of a vibromotor.
To prevent or modify the effects of synchroneity between the period relating to
the length of the suspenders of sieves and the like and the speed of rotation of the
vibromotor when starting gradually from rest to the full speed, mount the
unbalanced weight of the vibromotor on an arm which is provided with a spring of
suitable character so that the weight is pushed towards its centre of rotation as it
decreases in speed when stopped, and so that its full radius and therefore full effect
is not reached until the speed of rotation is above that of the suspenders as pendula.
By the same means increase of stroke of the thing moved may be obtained
with increase of speed or the decrease of stroke with the higher speeds may be
avoided.
In some cases I joint the vibromotor arm.
The several parts of my invention are illustrated by the drawings hereunto
attached but it will be obvious that the principle of the invention and various
methods of carrying it into effect being now ascertained and described other modi-
fications and forms of application of my invention in detail will occur to any engineer
or intelligent mechanical artizan capable of applying known means to an end.
In carrying out the first mentioned part of invention I obtain the required
motion, usually gyratory in a circular or elliptical path, and mostly of sieves,
screens, and the like or sorting tables and tea rolling plates and similar things
by means of an electric motor mounted directly upon or connected directly to
the thing to be put in motion. The electric motor may have upon its spindle

page_text: an excentric unbalanced weight, or it may have an armature fixed as in Figs. 1,
2, and 3 Sheet 1. In some
cases the spindle will be vertical as shown in
Figs. 1, 2, 3, 4, 5, 6, 7, and 8 and in others the spindle may be horizontal as will be
described with reference to the use of two vibromotors on one sieve or other thing.
As shown in Figs. 1 to 4 the weight of the field magnets f with their connecting
part or yoke and winding to form the excentric weight of a vibromotor which
collectively is marked V. The armature spindle A is held in a base C which is
fixed to the sieve or other thing to be put in motion. The base C carries two
insulated collector rings e, e¹ providing for an electric current by the wires +, 1,
which are connected to a source by a flexible connection such as is commonly
used for suspended incandescent lamps. The base C and collector rings e, e' are
shown in section in Fig. 1. Brushes c are connected to but electrically insulated
from the field pieces and supply current to the field winding w from the ring e
and back to the ring e¹ the electric circuit being made from the winding w
through the end of its wire k to the brush 6', held by but insulated from the
post d, thence from the brush through the commutator n and by a wire from the
latter into the hollow armature spindle, and round the armature A and out by
another wire to the opposite side of the commutator n, through the brush b, thence
to the winding w' and the collector ring e¹ and the negative wire 1. When
supplied with current at suitable pressure the field magnet and winding rotate
round the armature on the bearings B, and the parts comprehended in the field
magnets being unsymmetrical their rotation sets up a centrifrugal pull which rotates
with the field and consequently gives rise to a gyratory effort which will move
the thing to which the base C is attached through a range which is proportional
to the weight and radius of the mass revolving round the spindle A of the
armature, and the resistance offered by the thing to be moved, whether that be
a suspended sieve or a sliding mass. The path through which the thing is
moved will be circular or depart more or less therefrom according as the electric
vibromotor is as near or more remote from the centre of resistance.
To increase the unbalanced excentric weight of the field magnets round about V
the distance piece or yoke may be extended as shown by dotted lines at V
in Figs. 1 and 2 or as shown at V₁ in Fig. 2.
The
The electric vibromotor shown in Figs. 1 and 2 may be made with a hollow
yoke as shown at V Figs. 3 and 4 and the pole pieces may be cast therewith
or made separately and fixed to the part V which carries the winding w.
object of this form is to provide an electrical vibromotor the effective weight
of which may be varied by inserting more or less weight in the box yoke preferably
in the form of lead shot as at H Fig. 3 Sheet 1 and which will vary in effect
automatically.
When the electric vibromotor is at rest. the shot or ball will take the place
shown by the full circles at H. At the speed which would coincide with the
period of the suspenders of a sieve swinging as pendula the position of the shot
would change very little and the vibromotor would attain considerable speed before
much change in the position of the shot occurred. Before such change had taken
place the speed coincident with the natural period of the suspenders would long
have been passed. In this way violent swinging of a sieve at the starting of a
vibromotor may be avoided for it is not until the desired speed of the vibromotor
is approached that the shot take up their position of greatest effect as shown by
the dotted circles in Fig. 3. By means of this automatic change of the radius of
the vibromotor weight or a part of it I also avoid the reduction in the range of
gyration which it has been found will occur with some sieves with increasing speeds.
When an ordinary electric motor is employed such as those with concentric
multipolar fields and rotating armature I attach a vibromotor weight to the end of
the spindle as in Fig. 5 in which B is one bearing of such motor and A the spindle.
The weight may be hollow for the purpose described with reference to Figs. 3
and or it may be of similar form but solid. Instead of the hollow form of
vibromotor weight, the same object may be attained by mounting the weight on a

page_text: The same
Jointed arm as in Figs. 6 and 7 in which A is the motor spindle, B the motor
hearing, J an arm carried by a double cared boss K to which it is connected by a
pin p.
The arm J has a projection S upon it which allows it to fall to the position
of the dotted lines when the motor is at rest or running at a low speed. At this
position the effective radius of the weight is a minimum. With sufficient speed it
takes a position more or less nearly that shown in full lines at Fig. 7.
object is attained by making the apparatus as shown at Fig. 8, in which the arm J
is inclined at an angle from the spindle A which is usually somewhat greater than
the angle of frictional repose for the weight V. When the vibromotor is at rest
the weight takes the position shown by the full lines in Fig. 8 and with sufficient
speed it reaches the position of maximum effect shown by dotted lines. The
position of greatest radius may be adjusted by a set screw in one or other hole in
the arm by an adjustable collar thereon.
For obtaining a gyrating motion according to the secondly mentioned part of
my invention I employ in some cases a vibromotor which may be operated by
means of steam compressed air, or water under pressure. The simplest form of
this apparatus is shown in Figs. 21 and 22 Sheet 2 and Fig. 23 Sheet 1 in which
B is a bearing to be fixed to the sieve or shaking table, or to whatever it is desired
to communicate a gyratory or shaking movement. A hollow spindle A runs in this
bearing Band carries at its lower end an arm K, K' carrying a weight V adjustable
as to position. This arm as shown in Figs. 21, 22 Sheet 2 and Fig. 23 Sheet 1 is
double, one part of which is hollow, and carries at the end a nozzle or jet piece j
through which the steam air or water employed escapes. The bearing B and the
spindle A are shown in section Fig. 23 Sheet 1. The working fluid or liquid is
admitted by the pipe G and finds its way into the interior p, of the spindle A ; it
thence passes into the interior of the hollow arm K', from which it escapes at the
jet Figs. 21 and 22 Sheet 2 and causes rotation of the arm according to the well
known principle of Hiero's steam engine. The spindle A and arm K carrying the
weight V is thus rotated at a speed depending upon the pressure of the working
fluid and size of the jet j. To make the spindle A air or water-tight cup leathers
are inserted at 11, Fig. 23 Sbeet 1 and held in place by the bearing bushes B,¹ B¹,
the working fluid finding its way to these cup leathers by the annular passage a.
At
Figs. 24 and 25 Sheet 1 show another modification of my invention for obtaining
a gyratory movement by fluid or liquid pressure by means of the reaction of an
excentric unbalanced revolving weight. Upon a fixed spindle A held by a
casting D and setscrew therein, is a double arm K seen in section at Fig. 24
Sheet 1 carrying jet pieces or nozzles as seen at Fig. 25. Upon the spindle Aa
wheel U rotates on bush bearings B, B. The wheel U, the bottom side of which
is shown in Fig. 25 being provided with little buckets Z like a turbine wheel.
one part of the periphery of the wheel U is a weight V, the reaction of which,
when rotating, imparts to the spindle A a gyratory movement. The working
fluid or liquid enters at the pipe G and passes into the interior p of the
spindle A and thence into the interior of the double arm K. When desired the
exterior of the wheel U may be fitted with vanes and by enclosing it in a case k
indicated by dotted lines with a central opening for the admission of air, the wheel
may be caused to act as a fan. When the apparatus is worked by compressed air
this air on leaving the wheel may be caused to escape in one direction as indicated
by the arrow Fig. 3 and it may serve as a ventilating blast or for a grain cleaning
or chaff separating blast; and it may be utilised as supplementing the air-blast of
the wheel U when fitted with blades constituting it a fan.
For carrying out the third and eighth mentioned part of my invention I form the
vibromotors as illustrated by Figs. 26 and 27 Sheet 1 and Figs. 1, 2, 3, 4, 5, 6, 7,
12, 13, 14, 18, 19, 23 and 24 Sheet 2 and Figs. 1 and 2 Sheet 3. In Sheet 2
Figs. 1, 2, 3, 4, 5, 6, and 7 show an arrangement of vibromotor in which the
spindles carrying the reaction weights are arranged to be used horizontally but
may be used vertically. Fig. 1 Sheet 2 shows the apparatus such as would be
fixed to one end of a screen or riddle in the manner shown in the plan Fig. 2 and

page_text: in the elevation Fig. 4. In Fig. 4 the sieve or screen is shown at S. Fig. 3 is a
section of Fig. 1 on the line A-B. One of the spindles A¹ carrying the weights V
and V by which reaction movement is set up, is provided with an eye at one end
into which a hooked rod G engages the other end of the said rod G similarly
engaging with a spindle E running in a bearing D attached to a fixed part P of a
machine, framework, or building and rotated by suitable means such as a belt on
the pulley F. At the other end of the spindle A' and of the spindle A are cog
wheels W and W' by means of which the two spindles are caused to rotate at the
same speed and in opposite directions. When the spindles are driven by the
spindle E and the rod G (shown broken to admit Fig. 3) the inertia of motion of
the excentric weights V and V' causes motion to be set up through the bearings B
and B and the casting C by which they are attached to the screen S, thereby
operating the said screen in the direction of its length. In the direction of a line
joining the spindles A and A' as in Fig. 4, the inertia of motion of each of the
weights V and V' is neutralised and hence no movement is caused in that direction.
If it be desired to cause an intermittent variation in the motion imparted to the
screen S, the wheels W and W₁ may be of different sizes as for instance 30 and
35 teeth in which case the weights V and V₁ will co-operate to give the greatest
motion once in about 6 revolutions of the spindle A' and between periods of greatest
action the vibromotor power decreases and increases.
In some machines it may be desirable not to have the wheels W and W₁ on the
driven part of the vibromotor itself but to have them elsewhere. When this is the
case I do not use the single bearing D Figs. 5, 6, and 7 carrying the one spindle E
but I use instead thereof a double bearing with two such spindles and instead of
connecting the spindles A, A' by cog wheels I put the cog wheels on two spindles E.
Each of these spindles like the spindle E Fig. 5 Sheet 2 is connected by a hooked
or jointed rod like G to each of the said spindles A, A¹ of the reaction apparatus
which then works as already described, but the cog wheels are now on a fixed
instead of the moving part of the apparatus. This is shown by Figs. 1 and 2,
Sheet 3 which are modifications of this form of my invention and show it as
applied to a thrashing machine. In Fig. 1 Sheet 3 the main riddles R and
jogboards j, J' are driven by one reaction apparatus with excentric weights V, V¹
worked by a belt TR from the spindle of the drum D and running on the
pulley F on a spindle running in a bearing in the bracket D. The first dressing
shoe E is worked by a similar but smaller reaction apparatus driven by a
belt T on a pulley F. The second dressing shoe E' is worked by the arrangement
of vibromotor shown at Fig. 2 Sheet 3 in which the reaction weights V, V',
VV, and their spindles are driven by the hooked rods G and G' and the
spindles E, E running in bearings D attached to a fixed part P of the machine
and connected by cog wheels W, W. When it is desired to use two vibromotors
or the double form of apparatus with vertical spindles for securing a reciprocating
movement either of uniform or of periodic variation of rauge I use the combination
shown by Figs. 26 and 27 Sheet 1 and Figs. 12, 13, 14, 18, 19, 23, and 24
Sheet 2. Fig. 27 Sheet 1 shows an arrangement which may be driven either
by a vertical driving rod G and spindle E in a bearing D on a fixed part of
the frame P. or by a horizontal rod G. By the employment of a double
arrangement of vibromotors which partly neutralise their own reactions I secure
a true reciprocating movement of the sieve S which does not give rise to the
vibration of framework which results from the use of a crank. In Fig. 27
Sheet 1 S is an end elevation of the sieve and ss indicate suspenders. My
invention in this case provides a combination of two vibromotors driven by either
a vertical or a horizontal driver and revolving at the same or at different speed
and employed so that their reactions in the direction of a line connecting their
spindles neutralise each other and secure a purely reciprocating movement instead
of the gyrating movement which is set up when only one is employed or a
movement which is periodically varied in range at predetermined intervals as
already mentioned. Figs. 18, 19, 23, and 24 Sheet 2 show a vertical spindle

page_text: double vibromotor in which the connecting cogwheels W and W' carry reaction
weights V and V which are generally cast with or fixed to the wheels. The
spindles A. and A¹ run in the bearings B and B which are cast together with
the connecting plate C. The upper ends of the spindles A and A are provided
with an eye so that they may be connected by a hooked or jointed rod to a
driving spindle or spindles as described with reference to Fig. 27 Sheet 1 and
Figs. 1, 2, 3, 4, 5, 6, and 7 Sheet 2 for the horizontal apparatus. The lower
ends of spindles A, A' carry arms K and K' upon which are weights V and V
which are adjustable by means of setscrews, so that their radius may be greater
or less according to the range of movement required to be given to the sieve S or
other thing to be moved. Fig. 26 Sheet is a modification of the arrangement
shown in Figs. 18, 19, 23, and 24 Sheet 2 the weights V and V₁ being attached to
the wheels W and W₁ at the lower end of the spindles A and A. To prevent
dirt from getting into the bearings caps C and C are attached to the upper parts
of the spindles.
Figs. 12, 13 and 14 Sheet 2 shows another modification of my invention by means
of which a reciprocating movement is obtained by the reaction of two unbalanced
weights revolving in opposite directions. The spindle A carries an excentric
weight V and a hollow spindle A¹ carries another excentric weight V, both weights
are encircled by a ring R so as to prevent anything from falling between the
weights and the space between the weight and ring may be covered by a plate.
On the spindle A is a cogwheel W and on the spindle A¹ a similar wheel W'
which is driven by the wheel W" revolving on the stud spindle T. When the
spindle A is rotated by a fixed spindle and flexible or jointed connecting rod such
as those described already, the two weights V and V' revolve in opposite directions
and when approaching each other and when receding from each other they neutralise
each other's reactions, but when describing the greater part of their path of
revolution, they co-operate as in the other forms of the apparatus described in
producing a reciprocating movement. The apparatus as shown at Fig. 12 is
attached to a sieve or shaking table S as also shown in plan Fig. 13.
When a gyratory movement is set up by a single spindle vibromotor running in
a bearing attached to a suspended sieve it causes in some cases an erratic movement
of the sieve when it is being started. This as already explained with reference to
Figs. 3 to 8 Sheet 1 is because the weight revolves for a few revolutions at a speed
which corresponds with the period of oscillation of the suspenders which carry the
said sieve or screen. To obviate this I make the apparatus as shown in Figs. 15, 16,
and 17, Sheet 2. In both these improved forms of the simple vibromotor which are
similar to those described with reference to Figs. 3 to 7 Sheet 1, the weight V is
made so that when the apparatus is at rest it automatically reduces its distance or
radius from the centre of the spindle A. In Fig. 15 Sheet 2 when the apparatus
stops the weight is pushed towards the centre by the spring O which is held in
position by the collar M which may be fixed in the required position on the arm J
by a setscrew and collar M. The weight V being thus near the centre of rotation,
its reaction and gyrating power when commencing to rotate is much smaller than
when the same weight is at the greater radius indicated by the dotted lines..
Until, therefore, the spindle A is driven at a considerable speed the weight is unable
to compress the spring O and the radius being thus small until the high speed has
been reached the injurious, erratic movement, of the sieve S at starting is lessened
and the loss of efficiency at high speeds is also obviated.
Fig. 16 Sheet 2 shows another method of obtaining gyratory motion and of
obviating the same difficulties. In this form the arm J carrying the weight V is
jointed upon the spindle A or to a piece R fixed to the spindle. When the apparatus
is at rest the arm and weight take the position shown and it is not until the proper
speed has been reacbed that the position shown by the dotted lines and the full
gyrating power are attained.
Another modification of this form of my apparatus is shown by Fig. 17 Sheet 2,

page_text: the spindle of which revolves in ball bearings constructed after the manner
commonly known and understood and formed with cups for the ball races and covers
for keeping out dirt. When revolving at full speed the weight V takes the position
shown by the dotted lines. Figs. 8, 9, and 10 Sheet 2 show another modification of
my invention by means of which the difficulties referred to with regard to the starting
of machinery and with regard to the shortening of the gyratory stroke at high
speeds are obviated or lessened. The spindle A rotated by means of a hooked or
jointed rod or of a flexible connecting rod or wire rope G which is fastened to
the spindle by a pinching nut N, carries at its lower end a circular box, part of
which is made as shown in plan at V, Fig. 10, Sheet 2 and in vertical section as
shown in Fig. 8. Fig. 10 is a horizontal section on the line A, B Fig. 8. Into
this place a quantity of lead or other metal shot or balls H, which, when the
apparatus is at rest, fall to the bottom of the partition and towards the centre. When
the apparatus is started, it has somewhat feeble gyrating power or reaction effort but
as the speed at which the spindle revolves increases the balls or shot fly outwards
by centrifrugal force and take the position of greatest radius. The ring R Fig. 10
is not in all cases essential and the holes I, I shown in it are only for reducing weight
and for clearing out the core from the casting. Fig. 11 Sheet 2 is a further
modification of this apparatus in which only one radial diaphram is employed in a
circular box, shot or balls H being used to provide the unbalanced excentric
weight as in Figs. 8, 9, and 10. When the apparatus is at rest the balls spread
over the greater part of the bottom of the box. At starting the gyrating power is
feeble but the balls gradually pile up in the position H at the greatest radius
with increasing speed and by this means the difficulties referred to are obviated.
The vibromotor arm and weight shown at Fig. 8 Sheet 1 may be also used on
the lower end of a spindle as described with reference to Figs. 15 and 16
Sheet 2.
When it is necessary to impart motion to a vibromotor placed in a position
where it cannot be driven direct I operate it by the means shown by Fig. 20,
Sheet 2. In this case the vibromotor weight which is shown as similar to
that of Figs. 8, 9, 10, and 11, Sheet 2 is attached to a spindle A running in
a bearing B and driven by means of a belt G¹ running on a pulley W. The
pulley W is attached to a spindle A" running in a bearing Bi and driven in
the manner before described by a rotating, flexible or jointed rod G connected
to a spindle in a fixed bearing as in Fig. 6 Sheet 2. Both the bearings B and B"
are fixed upon the screen or shaking table S.
By means of these several forins of vertical spindle vibromotor for giving a
gyratory motion to sieves, I obtain an adjustable range of motion and when the
vibromotor is attached to one end of the sieve the end to which it is attached
should be the receiving end of the sieve as here the action upon the material
to be treated is strongest. Thus at the part where the material is bulky more
powerful agitation is given to it to separate it and keep it separated. As the
material travels towards the delivery end and more and more of the finer parts
have gone through and consequently where there is less and less to be operated
upon, there motion becomes less and is almost entirely a reciprocatory and is
specially suitable for delivering the tailings. The path of any point in the sieve
varies from that of an ellipse whose greater axis is transverse to the sieve to
that of a smaller and very narrow ellipse whose greater axis is longitudinal and
is of the same range as the minor axis of the ellipse at the receiving end.
It will be understood that the force with which a vibromotor imparts motion to
the sieve S or other thing may be equally employed to oppose such motion if
undesirably set up by other means. A vibromotor may thus be attached to a
machine or structure to which vibration is undesirably communicated by some
extraneous force and the tendency of the vibromotor to produce motion in one or
any direction would neutralise or modify the tendency of the said extraneous force
to set up motion in one or any opposite direction.

page_text: For this purpose the vibromotors hereinbefore described would be rotated at a
speed which would be the same as the speed or periodicity of repetition of the said
force or impulse to be neutralised or modified.
In carrying out the fourth mentioned part of my invention I mount carry or
support machinery such as engines or engines and machines directly coupled to
them such as engines coupled to dynamos according to the methods shown by
Figs. 9 to 22 Sheet 1.
Fig. 9 represents the side view of a vertical engine in which A is part of the
framing supported on the base B and carrying the cylinder D. It may be assumed
that the engine is balanced as respects the more or less nearly vertical forces set up
by the rotation and reciprocation of the working parts. In almost all cases when
this balance is effected there remain unbalanced forces in a horizontal or a more or
less nearly horizontal direction, and in many cases it must happen that when the
vertical forces are balanced the horizontal forces and the vibration set up thereby
are aggravated. To obviate or modify this vibration I employ the power which is
usually expended in producing it to set up motion in parts on which it may be
expended harmlessly. In the arrangement shown in Fig. 9 the power which is
available for setting up vibration due to horizontal forces tending to move the
engine on or with that upon which it rests, is neutralised as to vibratory effects by
causing it to overcome the inertia of one or of two freely sliding or suspended
weights W. W. They are shown as sliding upon a flat and horizontal surface upon
the base B but they may be suspended after the manner of a suspended sieve
worked by the reaction of a vibromotor, and if made to slide on a surface, the
surface may be, when an excentric E is used to move the weight or weights as
shown, inclined at an angle so that more force may be required to move them
in one direction than in the other. In Fig. 9 only one excentric is shown to
move two weights but one excentric may be used for each weight with their
maximum radii not on the same radius so that the moment at which the inertia and
the momentum of the weights is overcome shall not be the same for each weight.
This would make it possible to meet impulses originating at angle not 180 degrees
or impulses which if originating at 180 degrees are deflected by influences not
acting equally at opposite parts of the path of any of the main moving parts.
Figs. 10 and 11 Sheet 1 shows a modification of this invention according to
which the engine is itself the weight upon which the unbalanced forces_are_called
upon to expend themselves, and the principle of the vibromotor is employed more
fully in as much as the action of the parts giving rise to the disturbing force and
reaction of the disturbed engine including those parts are completely confined in
their effects to the engine, and the return swing of the engine in each phase of its
motion as a pendulum exerts through the crankshaft a force which approximately
equals the force which has been expended upon it, thus tending to impart to the
crank C and part of the connecting rod a rotative effort corresponding to the value
of their moment of inertia.
The engine is shown as a small marine engine having side plate framing A
attached to bosses on the cylinder D. The steam pipe P which is made of more
than usual strength is also fastened by the flange p to these bosses on the cylinder,
passages being made to convey the steam from the steam pipe to the steam chest S.
Guides G for the cross-head are fixed between the side plates, and the engine is
suspended by suitable means. As shown the steam pipes form trunnions which
carry the engine and are themselves carried by the cross framing part of which
may consist of bulb-edged plates F, F¹ with bosses fixed to them through which the
steam pipe trunnions pass.
The engine is thus carried by the transverse framing at cylinder level instead of
by being fixed to the lower cross framing L.
Beneath the engine are two beams or rolled joists M M carrying blocks of
wood H curved with a radius equal to that of the curvature of the plate
connecting the side plates A A, the curve being struck from the trunnion as centre.
When it is necessary to stop the swinging or oscillation of the engine or check it
R

page_text: as for instance when a boat is rolling; these blocks are pressed against the bottom.
of the engine frame by means of the screw and hand wheel J. In some cases
spring buffers may be placed so as to limit the oscillation which in most cases
would not be required to exceed a range of from an eighth of an inch to an inch
to prevent communicating the vibratory effort to the boat.
To make the checking or stopping of the oscillation of an engine, carried as
described with reference to Figs. 10 and 11 Sheet 1, automatic, the beams M M at
the end, not fitted with an adjusting screw J are as shown in Figs. 12 & 13 carried
on two pins TT which form distance pieces between two plates NN which hang
on either side of the top flange of the bilge framing and carry weights W. W.
Between the pins TT is a tooth 1 Fig. 13 which keeps them in place and the
beams M M are kept in place by the stop piece K as in Fig. 10. When the boat
heels over to one or other side the weights W W swing to the same side and
depend from one of the pins T the other similar pin being raised and lifting
the beam M and thus pressing the brake blocks H against the bottom of the
engine.
Figs. 14 and 15 show a method of supporting the bed plate B of an ordinary
vertical engine by means of radius links R R which depend from pins Q fixed in
the supports OO carried by a lower or foundation plate B' the lower ends of the
radius links carrying the engine bed plate by means of the suspending bars U U.
Usually a line through the centres of the pins Q Q and UU if produced should
intersect at the steam pipe P which in these cases would be fitted with a joint
similar to a gland and stuffing box expansion joint.
Figs. 16 and 17 show a form of vertical engine supported by radius bars or links
which support rather than suspend the engine, the radius bars R being pivoted to a
foundation bed plate B¹. In some cases the bars R may be extended downwards
by the parts R¹ to carry weights W W. These weights may be adjusted as to
radius on the levers R' and therefore as to power of modifying the movements of
the engine, and instead of being extensions vertically downward of the links K the
levers R¹ may be horizontal and the weights W W may have a slight vertical
angular motion instead of a horizontal angular motion as of a pendulum. In any
case the weights are only for modifying adjustments.
A modification of this arrangement is shown in Figs. 18 and 19 in which the
bedplate B of the engine is supported on a supplementary bedplate B' by radius
bars or toggles R and bolts pass freely through both bed plates, the nuts of which
bear upon springs such as the coil spring Y on the top of the bedplate B.
In place of the pendulous engine frame or radius bars described the engine bed
plate B may rest upon a bed of rollers or balls carried as in Figs. 20, 21, and 22
Sheet 1 by a supplementary bed or foundation plate B'. In the arrangement
shown in Fig. 20, projections Z Z are fixed to the bed plate B or a radiua link is
pivoted thereto to move the pivotted weight carrying lever R, R' when the weights
are employed. The part R may be made to act against checking springs or
buffers instead of carrying a weight W, and coiled or other suitable springs Y may
be inserted between the bed B and the flanges of the foundation bed plate B'.
As shown in Fig. 21 the lower part of the bed plates B and B are curved to
desired radii as for instance curves struck from the steam pipe centre and a leaf
spring Y may be placed as shown to check the vibratory movement. The ends of
the bed plates B in Figs. 20 and 21 are made as shown in Fig. 22 so that they made
slide or move freely but not vertically.
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 I do not claim.
the use of excentrics and vertically moved weights for the reduction or elimination
of vibration set up by the unbalanced or any moving parts of steam engines, but
what I do claim is
(1) Imparting or giving rise to a gyrating or shaking motion to and for the
operation of sieves or other parts of machinery by means of an electric motor

page_text: attached thereto and having unsymmetric field magnets or other unbalanced
excentric weight revolving round a fixed armature substantially as herein described
and shown with reference to Figs. 1, 2, 3, and 4 Sheet 1 of the drawings hereto.
(2) Imparting or giving rise to a gyrating or shaking motion to and for the
operation of sieves and other parts of machinery by means of an electric motor
attached thereto and carrying an excentric unbalanced weight with fixed or
adjustable or automatically variable radius substantially as described and shown
with reference to Figs. 5, 6, 7, and 8 Sheet 1 of the drawings hereto.
(3) Imparting or giving rise to a gyrating motion by means of a rotating
excentric unbalanced weight operated by means of a fluid or liquid pressure reaction
jet apparatus substantially as described and shown with reference to Figs. 23, 24,
and 25 Sheet 1 and Figs. 21 and 22 Sheet 2 of the drawings hereto.
(4) Imparting or giving rise to a reciprocating motion, to and for the operation
of sieves or other parts of machinery by means of two spindles connected by gearing
each spindle running in bearings attached to the thing to be reciprocated and
carrying an excentric weight or weights, the reaction of which is automatically
neutralised in the directions not required, said spindles being driven by means of
rotating, flexible, or jointed connection or connections substantially as and for the
purposes herein described and shown with reference to Figs. 1, 2, 3, 4, 5, 6, 7, 12,
13, 14, 18, 19, 23 and 24 Sheet 2, Figs. 26 and 27 Sheet 1 and Figs. 1 and 2 Sheet 3
of the drawings hereto.
(5) Imparting or giving rise to a gyrating or shaking motion to and for the
operation of sieves or other parts of machinery by means of a spindle running in a
bearing attached to the thing to be operated and carrying an excentric weight the
radius of which automatically increases with the speed of rotation and decreases
with the reduction of speed by action of gravitation or of a spring said spindle
being driven by a rotated, flexible, or jointed connection for the purposes and sub-
stantially as herein described and shown with reference to Figs. 8, 9, 10, 11, 15, 16,
and 17 Sheet 2.
(6) Operating a vibromotor attached to a sieve or other piece of machinery by
transmission from a spindle running in a bearing also attached to the sieve or other
apparatus to be operated said spindle carrying a pulley for driving the reaction
apparatus by a belt and being driven by a flexible or jointed connection as described
and shown with reference to Fig. 20, Sheet 2.
(7) Preventing or reducing the vibration which is set up by the forces which
arise from the working of engines and other motors and are resolvable into and
operate in an approximately horizontal direction, by opposing to the forces the
inertia of rest or of motion of weights moved in an approximately horizontal direc-
tion by means of excentrics on the motor shaft substantially as herein described
and shown with reference to Fig. 9 Sheet 1.
(8) Preventing or modifying the vibration which is set up by the forces which
arise from the working of engines or other motors and are resolvable into and
operate in an approximately horizontal direction by opposing to these forces the
inertia of rest cr of motion of part of the engine or motor suspended and vibrating
angularly and acting substantially as described and shown with reference to
Figs. 10 and 11 Sheet 1.
(9) Preventing or modifying the vibration which is set up by the forces which
arise from the working of engines or other motors and are resolvable into and
cperate in an approximately horizontal direction, by opposing to these forces the
inertia of rest and of motion of the whole or of part of the engine or motor carried
by links or radius bars supported and acting substantially as described and shown
with reference to Figs. 14 and 15 Sheet 1.
(10) Preventing or modifying the vibration which is set up by the forces which
arise from the working of engines or other motors by opposing to these forces the
inertia of rest and of motion of the whole or of part of the engine or motor and of
weights carried by radius links and levers substantially as described with reference
to Figs. 16 and 17 Sheet 1.

page_text: (11) Preventing or modifying the vibration which is set up by the forces which
arise from the working of engines and motors by opposing to these forces the inertia
of rest and of motion of the whole or of part of such engines or motors mounted or
supported as described with reference to Figs. 20, 21, and 22 Sheet 1.
(12) Automatically checking the angular motion of engines suspended in vessels
substantially as described with reference to Figs. 12 and 13 Sheet 1.
(13) Mounting and running a single or double vibromotor on the bed of an
engine, motor, or machine, or on the frame of any machine the working of which
sets up undesirable vibration the said vibromotor having a speed corresponding with
the periodicity of the force or impulse which sets up the vibration but opposite in
phase or direction.
W. WORBY BEAUMONT.