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Feb. j 12 , 1924.‘
A. E.‘ Hum:
1,483,512
MOTOR
1 ‘mud-July 14 .. 1920~
4 s Sheets-Sheet 1.
Feb.‘ 12 , 1924.'
A. E. HUDD
1,483,512
Moron
Filed July 14, 1920
5 Sheets~$heet 2
FIG
3..
51,112 , 1924;
A. E. HUDD
> 1,483,512
‘MOTOR
Filed July 14 .‘ 1920
5 Sheets-‘Sheet 3
Feb. 12 , 1924.
A. E. HUDD
MOTOR‘
Filed July 14. 1920
47
1154833512
Feb‘. 12,1924.
v
A. E. 'HUDD
1,483,512
MOTOR‘
Filed July ~14. 1920
5 Sheets-Sheet‘ 5'
1,43,512
Patented Feb. 12, 192%.
ALFRED ERNEST HUDD, OF LIVERPOOL, ENGLAND, ASSIGNOR TO AUTOMATIC TELE-i
PHONE MANUFACTURING‘ COMPANY LIMITED, or‘ LIVERPOOL, Enerann. ,
MOTOR.
Application ?led July 14, 1920. Serial No. 396,244.
rection, only.
To all whom it may concern:
5
Two armatures may be? em
55
Be it known that I, ALFRED ERNEST HUnD, ployed, one OfWlllCll 1s arranged to drive
a subject of the King of England, residing the shaft, While the other is ‘falling'back,vv
at “Stoneleigh,” Orient Drive, Gateacre, thus avoiding the use of detents.
Another object of the invention is to‘ pro
Liverpool, England, have invented certain
new and useful Improvements in or Relating vide a motor which is hung or suspended
to vhlotors, of which the following is a speci
?cation.
.
,
'
This invention relates to an improved‘mo
60
fromra pivot-shaft mounted in a stationary
support, so that the entire motor, including
its driven-shaft,‘ may be ‘swung bodily» to
tor which while particularly applicable for and away from the mechanism to be oper
the purpose of operating railway signals, ated through the means of an electromag
points and train stops, is also adapted for
neticmeans.
general use.
‘
~
v
65
‘
The preferred form of clutch consists es
The most desirable features governing the sentially of a spring pressed ball or roller"
employment of motors for operating rail in a tapered recess, situated between the
way signals are that they should be reliable, driving and the driven members, in such a 70
should be capable of starting and stopping manner that when the driving member
instantaneously and that they should carry moves in one direction the ball, is forced'into
20
out the operation in a limited time. In the narrow end of the recess and locks the
view of expense it is of course desirable that members together, whereas when the driv
the motors should be as cheap as possible, ing member is moving'in the other direction 75
and, also that they should be efficient. Pre~ the ball isforced into the deeper side of'the
viously electric motors of substantially recess and the driving member can move
standard type have been used for this pur perfectly freely with relation to the driven
26
pose, but in view of the small sized machine member. 'If a detent is used it may be con
30
required, and consequently, their low torque, structed similarly permitting ‘the free for 80
high speed characteristics, it has been essen— ward movement of the driven‘ member and
tial to provide gearing to enable the required preventing the backward movement.
The advantage of using this type of clutch
torque to be obtained. The amount of this
gearing has been considerable and this has is that if properly designed it enables the
been a disadvantage not only from the point full movement of‘ the armature‘ to be taken 85,
of View of expense, but also because they in advantage of. For instance, in the‘case‘ of
ertia of the moving parts was considerably vpawls with ratchet teeth a movement of the
increased and consequently the rapidity with armature corresponds to that of either. one ’
35
which the apparatus‘ could be accelerated or or two or some, de?nite integral number of
.o
retarded was considerably reduced.
teeth whereas theball clutch is capable of
one or more members set in vibration by
ated by means of an electromagnetic» clutch
The principal object of the present inven~ responding to very small movements of
tion is to provide a type of motor which is much less size than it would be practicableto
_
better adapted for the conditions required cut teeth.
This motor may be caused to engage. with
and, to this end, according to this invention
the railway signal is operated by means of the railway’signal or train stop to be. oper-_
95
suitablemeans.
These vibratory members or its equivalent excited'with the same cur
are arranged so as to act on the shaft of the rent as ?ows‘ through the motor. The ar
signal to T produce a continuously forward rangement is such that when the. motor has
movement thereof. The power supply is completed-the movement'it is deenergized
preferably direct or alternating current but the clutch is still maintained operated
which is connected to one or more electro through a suitable control circuit so‘ that
magnets.
5O
100
The armature‘ or armatures of the roller clutches resist the backward move
these electromagnets are alternately attract men and hold the signal in the operatedpo
ed and released so that they vibrate at a sition. The declutching is e?ected by break 105
high rate of speed.
These’ armatures are ing this locking circuit whereby the signal
connected to a shaft by one or more one way is free to restore to normal.
Further details of the invention
clutches so as to cause rotation in one di
will be
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1,483,512
better understood by referring to the ac
companying drawings which illustrate, by
way of example only, two constructions of
motor embracing the principles of the in
vention; it will be readily understood that
these constructions may be considerably‘
modi?ed without departing from the spirit
of the invention.
Figures 1, 2 and 3 are a sectional eleva
clockwise the rollers move toward the en~
larged end of the recess so that the move
ment is quite free. Preferably the bases
17 are normal to the line running through
the centre of the rollers and the centre of 70
the shaft, as in the construction shown in
Figures 4, 5 and 6 and not as shown in
Figures 1, 2 and 3 although it will Work sat
isfactorily provided the divergence from
tion, plan andend view respectively ofdone normal is: not excessive.
construction of a. motor according to this
In the base 17, hardened steel pieces 21
invention designed to be driven by direct are ?tted while the inner side, at least, of the
15
20
25
30
current. Figures 4, 5 and 6 show sectional
elevations, side View and elevation respec
tively of another construction, of the motor
according to the invention designed to be
driven by alternating current and to engage
with a shaft for operating signals, train
stops or like apparatus. Figure 7 shows in
detail the relation which exists between the
armatures and the pole pieces in the latter
construction.
Figure 8 is a perspective view of the sup
ring 6 is likewise hardened, so as to reduce
wear to a minimum. The cylindrical mem
ber 10 is keyed to the shaft 19 mounted on
80
bearings 19’ depending from the supporting
frame, so that the shaft can, consequently,
only be driven in one direction and if the
armatures 4 and 5 are arranged to operate
in such a manner that when one is attracted
the other is falling back, then the shaft 19
will have substantially a continuous move
ment. This arrangement may be effected
porting-frame shown in ‘Figures 1, 2 and by means of devices which are best shown in
3. Figure 9‘ is a perspective view of the sup Figure 2. In this view it will be. seen that ‘
porting-frame shown in Figures 4, 5 and 6. the armatures are shown in a central posi
Figure 10 is a perspective view of one of the tion resting neither against the buffer
electromagnets shown in Figures 4, 5 and 6. springs 22 and 23 which prevent the loss of
Figure 11 is a perspective view of the arma energy, which impact with the stationary
ture supporting member shown in the last stop pieces 24 and 25 would entail, and
mentioned ?gures.
against the projections or pins 26 and 27.
Referring to Figures 1, 2 and 3, the motor This is a position assumed during the
comprises two vertically arranged pairs of cycle of movement of the armatures when
electromagnets l and 2 each magnet having one is being attracted by its core and the
a core '1’, and around which the exciting other is being pushed from its core, which
coils‘ are wound; the cores are connected at operation is secured by a switching arrange
100
one end to a plate 3 of magnetic material, ment comprising a rocker 29 and a contact
by means of screws, while at the other end arm 30 independently pivoted on a spindle
40
they each face armatures, of which arma
28. The rocker 29 is provided with split
ture 4 is in front of the cores of electro
magnet 1 and armature 5 in front of the
cores of electromagnet' 2. The armatures
4 and 5 are secured by rivets 6’ or the like
pins 26 and 27 adapted to engage with the
armatures 4 and 5 respectively and whilst
ends in which are mounted two projecting
the contact-arm 30 engages with two ad
to upwardly-extending lugs 62 forming part justable contact members 33 and 34 carried
of ,the rings 6 and 7 respectively, which by the rocker and suitably insulated there
rings form part of roller clutches 8 and 9 from and connected respectively to one side
whereby the vibratory motion of the arma of the windings of electromagnets 1 and 2,
tures is converted into undirectional motion the other side of the windings being con
of the shaft 19 and pinion 2O keyed thereto. nected together and to a source of current.
The construction of the roller clutches will
be understood from the section of the roller
clutch 8 shown in Figure 1. The ring 7 em~
braces and oscillates around a cylindrical
member 10, having a number of recesses 11,
12 and 13 in its periphery in which rollers
14, 15 and 16 are placed, and is also formed
The contact arm 30 is ?tted with suitable
110
I15
contact members adapted to work between
the contact members 33 and 34 on the rocker,
and at its extreme end is tapered to a ?ne
point or knife edge which engages in an
angular recess 35 in a member ‘36 which
is pivoted at 36’ and member 36 is forced
120
with side-?anges between which the ring against the end of the contact-arm 30 by
oscillates.
65
The recesses are so shaped that the spring 37 . The arrangement is obviously
the rollers normally lie between the inner
walls of the ring 6 and the bases 17 of the
recesses against which they are pressed by
means of the springs 18. Consequently, if
the ring 6 is moved clockwise it tends to
jam the rollers between the bases 17 and the
inner walls of the ring 6 while if counter
such that the contact arm 30, which is shown
in a central position in Figure 2, a position
125
assumed during its movement from one con~
tact to the other, is always forced to one
side or the other side so as to make con‘
nection with either onev or the other of the
contacts 33 or 34 and further by exerting
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1,433,512
3
pressure thereon to force'the rocker 29, and temperature rise for a given power and con
consequently the armature 4 or 5 to take up sequently the permissible overload is much
an extreme position.
greater.
The laminated armatures 46’ of these elec
The operation is as follows: A supply of
current, preferably direct current for this tromagnets are all arranged on a common vi
construction, although it would work with bratory member 46 and are shaped as shown
alternating current by a suitable modi?ca
tion, is connected to the contact arm 30 and
the common side of the windings of electro
'10 magnets 1 and 2. ,Assume that contact arm
30 makes engagement with contact 33 so that
in Figure 7 so that they may be attracted
a considerable distance without actually
making contact with the polepieces 47 and
, 48 of the cores 49', in order to avoid loss due
to impact aswill be referred to later. The
electromagnet 1 is energized, then armature vibratory member 46 as shown in Figure 4
4 is attracted; after being attracted a‘certain has a hollow cylindrical centre surrounding
distance ‘it makes connectionwith the pro
ll
with an annular space a hexagon 49 of hard
jection 26 and in completing its forward .ened steel; from the flat sides of the boxes’
movement forces the rocker 29 to turn about gon, small leaf. springs 50 project substan
the pivot 28 carrying with it the contact tially at right angles thereto adapted to
members 33 and 34 and by means of the pro
80
force the rollers 51 lodged in the annular
jection 27 forcing the armature 5_ away from space so that they tend to jam between the
the eleetromagnet 2. > As the contact arm 30 ?ats of the hexagon and the inner walls of
presses against the contact member '33, this the member 46 when said member moves in
is also forced round until it reaches the dead a clockwise direction while when moved in
centre of the angular recess in member 36 the opposite'direetion the rollers move into
and due to its inertia it passes said dead a slightly enlarged space so that the clutch
center and then the spring-37 forcesit into can move'freely. It will be appreciated that
‘engagement with the other contact member the roller clutch shown is identical in opera
34. This closes an exciting circuit for the tion with thatillustrated in Figures 1, 2 and
electromagnet 2 besides breaking that of 3 but differs in constructional details which
electromagnet 1; armature 5 is then at are very important from the point of view
30 tracted, and armature 4 being released is in of expense in manufacture. The necessity
turn forced back by the rocker arm; simi of ?tting the hardened pieces 21 into the cy~
larlythe contact arm 30 is forced past the lindrical member 10 and making the recesses
dead central position and immediately ?ies 11, 12 and 13 for the springs 18 (as shown
25
over and makes connection with the contact
35
40
95
in Figure 1) is entirely eliminated.
The vibratory member 46 is normally
cited and the cycle repeated by this means maintained in a floating position as shown on
whereby the armatures are maintained in the drawings by means of the leaf-springs
vibration, one being attracted While the 61, so that'from this position movement may
other ‘falls back. By means of the roller be made to either side. Preferably the
clutch above referred to the attracted arma strength of the springs 61 and the weight
33, so that the electromagnet 1 is again ex
100
105
ture acts on the shaft 19 and forces it round ‘of the vibratory member 46 are so chosen
while the other armature falls back to in that they are adapted to respond naturally
turn. actuate the shaft while the ?rst arma to the frequency of the alternating current
ture is released.
45
'
‘supplied. Although the apparatus will
work with other adjustments, the most effi
struction of motor according to the invention cient varrangement is that stated. Springs
is illustrated; this construction of motor is '61 are anchored to cross-rods 61’ whose ends
.110
although it may be arranged to be operated provided with seats 64’ to which the pole
115
In Figures 4, 5 and 6 an alternative con
specially adapted to be operated by alternat are secured in the arms 62' of the supporting
ing current or interrupted direct current frames 63', said supporting frames being
so that it breaks its own circuit, such adapta pieces 48 of the magnets 41 are secured. The
tions being well known in the art and will shaft 45 is supported in ball bearings 53
and 54 mounted in recesses 54’ formed in the
.
In this case for the sake of compactness supportingframes and drives the pinion 55
not, be described.
60
four electromagnets 41, 42, 43 and 44 are
shown arranged around the shaft 45 al
though it will be appreciated that the num
ber of these electromagnets could be varied.
The advantage of a number of magnets in
addition to compactness, vis uniformity of
which is keyed to‘ it. As the motor is pri
120
marily intendedgfor operating railway sig
nals, train stops and like apparatus capable
of exerting a continuous reactive force dur
ing the operation, an arrangement is shown
"in Figure 6 whereby the motormay be adapt
125
torque and continuity of operation in the ed for the purpose. It will be seen thatthe
case of one coil failing or burning out; an~ whole of the motor, in Figures 4 and 5 is piv
other advantage is that the external surface oted at 56 and the supporting frames are
of the coils is much greater than for an provided with extensions which carry an
equivalent ~single coil so that there is a less ‘armature 57 . In Figure 6 is-shown indotted
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4.3-...
1,483,512
lines a toothed sector 58 keyed to the shaft 59 sible With a continuously operated member.
to operate the signal or train stop direct.
Having a high torque both at starting and
This toothed sector is adapted to engage during operation, the necessity of providing
with the teeth of pinion 55‘ also shown in expensive gearing is eliminated and at the
dotted lines, and when the electromagnet 6O same time these characteristics are main 70
attracts the armature 57 and moves the whole tained when driven with alternating current.
motor on its pivot 56 towards the signal The use of a roller or ball clutch enables the
shaft 59.
~10
-
full extent of movement of the vibratory
The operation is as‘ follows :——When it is ’ member to be taken advantage of, thus ren-y
required to lower-the signal or train stop, dering the motor highly efficient for its size;
alternating current is supplied from alter— at the same time the clutch acts to prevent
nating-current generator 80 to the electro the continuous backward thrust to which in
magnets of the motor and also to the elec
' tromagnet 6O simultaneously by operating
'15 the switch 81, the current from the motor
also passes through the segments 82 and 83
by means of the brush 84 secured to the shaft
59; the motor electromagnets‘ attract and re
lease their armatures in accordance with the
~20 rise and fall of the instantaneous value of
the current so that the vibratory member 46
75
operating railway signals and train stops,
this class of apparatus is subject.
The arrangement whereby no energy is
lost in impact is also an important feature
with a view to increasing still further the
efficiency of the motor. This feature while
partially present in the former construction
is a very important feature of the latter con 85
struction as the vibratory member 46 is en
tirely under the control of the springs 61
sponding to double that of the alternating both as regards the limits of its forward and
current supplied; the vibratory member 46 backward movements.
is set in oscillation at a frequency corre
in turn acts on the shaft 49 through the
What I claim as my invention is :—
roller clutches 51 to'move it in a clockwise
1. A railway signalling machine compris
direction
4), the rollers 70 in the mem— ing in combination a vibratory member,
ber 52 preventing any backward movement. means for causing said member to operate
At the same time the‘ electromagnet 60 signal mechanism, a roller clutch for causing
swings the pinion 55 into engagement with said vibratory member to engage with said
the toothed sector 58 and, owing to the rota signal mechanism when moving in one di
tion of the shaft 45 caused by the armatures rection, a second roller clutch for preventing
‘being attracted, pinion 55 operates the seg
35
40
45
100
2. A railway signalling machine compris~
trol tending to always assume the danger ing in combination an electromagnet, an
position it is necessary to provide means for armature adapted to vibrate when said elec
retaining them in the operated position for tromagnet is excited with alternating cur—
a certain length of time.‘v This is effected by rent, signal mechanism, a roller clutch for '
means of the electromagnet 60 which, al causing said vibratory member to engage
though the circuit of the motor is broken with said signal mechanism when moving
when the signal is moved to its full extent in one direction, a second roller clutch for
due to the brush 84; passing onto the in— preventing said signal mechanism from
sulated segments 85 and 86, is maintained moving backwards when said vibratory
operated until it is desired to again raise member is moving in the other direction.
the signal arm or train stop. The excitation
50
95
said signal mechanism from moving back
ment 58 and rotates the shaft 59 to lower the wards when said vibratory member is mov
train-stop or signal'as the case may be. As ing in the other direction.
the train stop or signal is under gravity con
90
110
3. A motor comprising in combination, a
of the electromagnet 6O maintains the pin
vibratory member, means for causing said
ion 55 in engagement with the toothed sec
member to vibrate, a shaft a roller clutch
tor 58 whereby the signal is prevented from for causing said vibratory member to engage
being restored to normal by means of the with said shaft when moving in one direc
115
roller detent clutch; as soon however, as the tion, a second roller clutch to prevent the
‘electromagnet 60 is de-energized, the pinion backward movement of said shaft when the
and toothed sector disengage due to gravity vibratory member is moving in the other di
control and the shaft 59 is free to restore.
It will therefore be‘ appreciated‘that a .
rection.
4. A motor comprising in combination a
120
very e?icient motor has been evolved which vibratory member electrical means for caus
possesses among others the following ad ing said member to vibrate. a shaft, a roller
vantages which render it particularly suita clutch for causing said vibratory member
ble for operating railway signals, points, to engage with- said shaft when moving in
65
train stops and like apparatus. The pro one direction, a second roller clutch to pre
vision of vibratory means for operating the vent the backward movement of said shaft
signals reduces the inertia ‘and renders the when the vibratory member is moving in the
apparatus more quickly responsive on ap— other direction.
plication or removal of power than is pos
5. A motor comprising in combination,
125
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1,483,512
11. A motor ‘comprising in combination
vibrate when said electromagnet is excited an electromagnet, an armaturefor-said elec
' an electromagnet, an armature adapted to
with alternating current, a shaft, av roller
clutch for causing said armature to engage
withsaid shaft when moving in one direc
tion, a second roller clutch to prevent the
backward movement of said shaft when the
armature is moving in the other direction.
6. A motor comprising in combination, a
10
ll
tromagnet, a shaft, a roller clutch connect
ing said armature tosaid shaft so that the
movement of ‘the armature in one ‘direction 70
only effects the movement of the shaft, and
a spring- for normally maintaining said
armature ‘in a central position, at about
which position it is adapted to vibrate.
12. A motor comprisinga periodic source
plurality of electromagnets, armatures for
each of said electromagnets adapted to vi of power, a vibratory member, a spring 'for'
brate when said electromagnets are excited, controlling said vibratory "member, the
75
a shaft, a roller clutch for causing said spring and vibratory‘ member being de
armatures to engage with said shaft when signed that their natural frequency corre
moving in one direction, a second roller sponds to the frequency of the periodic
clutch to prevent the backward movement source of power,~a shaft, a‘roller clutch for
of said shaft when the armatures are mov
causing said vibratory. member to engage
ing in the other direction.
with said shaft when moving in one direc
. A motor comprising in combination an tion, and a second roller clutch to prevent
20
electromagnet an armature for said electro the backward movement of said shaft when
magnet, a shaft, a roller clutch connecting the vibratory member is moving in the other
said armature to said shaft so that the move
25
direction.
'
85
'
13. A railway signalling machine com
ment of the armature in one direction only
effects the movement of the shaft, and a prising in combination'a vibratory =member,
spring for controlling the movement of said means for causing said member to vibrate,¢a
train stop, a rolling means ‘for causing said
armature.
90
8. A motor comprising in combination, vibratory member v‘to effect a forward move
an electromagnet an armature ‘for said elec~ ment of said train stop ‘when moving in one
tromagnet, a shaft, a roller clutch connect direction, and means for preventing said
30 said armature to said shaft so that the move train stop from moving backwards ‘when
85
ment'of the armature in one direction only said vibratory member is moving in the
effects the movement of the shaft, a spring other direction. '
14;. A railwayl signalling machine com
for ‘controlling the movement of said arma
ture, a ‘?xed member and a second roller prising in combination, an electromagnet,
clutch betweensaid member and said shaft an armature adapted to vvibrate when "said
100
for preventing the backward movement of electromagnet is excited with alternating
said shaft.
current, a train stop, ‘a rolling means’for .
9. A .motor comprising in combination a causing said armature ‘to effect a ‘forward
shaft of polygonal section, a vibratory movement of said train ‘stop when ‘moving
memben having a :circular hole whose an
in one direction, a rolling means for pre
nular internal face encircles saidv shaft, venting said train stop from moving back
means for causing said member to vibrate, a wards when said armature is moving ‘in/‘the
a
set of rollers between the “external face of other direction.
15. A railway signalling machine ‘com
said shaft and the internal face of said vi
45
50
bratory member, a ?xed member also hav prising in combination a ‘vibratory member,
inga ‘circular hole embracing said shaft, a means for causing said member vto vibrate,
second set of ‘rollers’ between the external signal mechanism, a roller clutch for caus
face-0f said shaft and the internal face of ing said vibratory member ‘to engage with
said '?-Xed member, and leaf springs adapted said signal mechanism when moving in one
to so control the movement of said rollers direction, means for preventing said signal
as-to cause said-vibratory member to engage mechanism from moving backwards when
110
115
said vibratory member ‘is moving in the
other direction.
16. A railway signalling machine com
gage with said shaft when the vibratory
member is moving in the other direction so prising iin combination, an electromagnet,
with said shaft when ‘moving in one direc
tion and to cause said ?xed member to en
55
as to cause said shaft to move only in a for
an armature adapted to vibrate when said
electromagnet is excited ‘with. alternating
ward direction.
10. A motor comprising in combination current, signal mechanism, a roller ‘clutch
an electromagnet an armature for said elec for causing said vibratory member to en
tromagnet, a shaft, a roller clutch connect gage with said signal mechanism when
ing said armature to said shaft so that the moving in one direction, means for prevent
movement of the armature in'one direction ing said signal mechanism‘ ‘from ‘moving
.65
only effectsthe movement of ‘the shaft, and backwards ‘when said vibratory member :is
‘
a leaf "spring for controlling ‘the ‘movement moving in the otheridirection'.v
17. A railway signalling machine com 13c
of said armature.
'
6
1,483,512
prising, a non reversible motor pivoted to to said motor a second gear wheel connected 65
swing bodily, a signal mechanism having to said signal mechanism and an alternating
a continuously-acting restoring force tend
current electromagnet for bringing said gear
wheels into engagement both to operate said
versible clutch for establishing connection signal mechanism and maintain it in the
between said motor and said signal mecha operated position.
‘ 70
nism and operative means for controlling
23. A, railway signalling machine com
said clutch whereby said connection is brok prising in combination a- vibratory member,
en when it is desired to allow said signal means for causing said member to vibrate,
mechanism to restore to the normal posi a shaft, means for connecting said vibratory
tion.
_
member to said shaft, whereby the shaft 75
18. A railway signalling machine com— moves in one direction only, means for pre
prising a non reversible vibratory motor venting the backward movement of said
pivoted to swing bodily, signal mechanism shaft, a signal mechanism, a clutch between
ing to restore it to normal position, a re
10
having a continuously-acting restoring force said shaft and said signal mechanism, op~
tending to restore it to normal position, a erative means for controlling the clutch‘.
20
reversible clutch for establishing connection
between said motor and said signal mecha
nism and operative means for controlling
said clutch whereby said connection is brok
means, is maintained when said means have
en when it is desired to allow said signal ?nished operating to prevent the signal
mechanism to restore to the normal position. mechanism restoring and released subse4
19. A ‘railway signalling machine com
prising, a non reversible electric motor piv
25
45
85
quently due to the de-energization of said
operative means whereby said signal mecha~
oted to swing bodily, a signal mechanism nism can restore.
244. A railway signalling machine com
tending to restore it to normal position, a prising in combination, an armature, an
reversible clutch for establishing conneo» electromagnet for causing said armature to
nection between said motor and said signal vibrate, a shaft, means for connecting said
mechanism and electrical means for con armature to said shaft whereby the shaft
trolling said clutch whereby said connection moves in one direction only, means for pre
is broken when it is desired to allow said venting the backward mo-vement of said
signal mechanism to restore to the normal shaft, a signal mechanism, electrical means
position.
for establishing connection between the
20. A railway signalling machine con" shaft and the mechanism whereby simul
prising a non reversible alternating current taneously with the excitation of said elec
electric motor pivoted to swing bodily, a tromagnet, means for breaking the circuit
signal mechanism having a continuously of said electromagnet, when said mechanism
acting restoring force tending to restore it is operated and means fQrdeenergiZingsaid
to normal position, a reversible clutch for electrical means independent only of said
establishing connection between said motor circuit breaking means.
i
and said‘ signal mechanism and electrical
25. A railway signalling machine com
means for controlling said clutch whereby prising in combination, an armature, an elec
said connection is broken when it is desired tromagnet for causing said armature to
having a continuously-acting restoring force
30
80
whereby engagement between the shaft and
the mechanism is established simultaneously
with the operation of said ?rst mentioned
to allow said signal mechanism to restore vibrate, a shaft, a roller clutch for connect
to the normal position.
ing said armature to said shaft so as to effect
21. A railway signalling machine com-~ the forward movement of said shaft in one
90
95
100
110
prising a non reversible alternating current direction only, a fixed member, a second
55
60
electric motor pivoted to swing bodily, a roller clutch for connecting said shaft to
signal mechanism having a continuously said ?xed member to prevent the rotation of
acting restoring force tending to restore it said shaft in the opposite direction, a signal
to normal position, a gear wheel connected mechanism, a second electromagnet for
to said motor, a second gear wheel connected bringing said shaft and said signal mecha
to said signal mechanism and an electro nism into engagement, a circuit breaking
magnet for bringing said gear wheels into device for de-energizing said ?rst electro
engagement both to operate said signal magnet when the signal mechanismis fully
mechanism and maintain it in the operated operated and independent means forcde-en
position.
ergizing said second electromagnet and per
22. A railway signalling machine com mitting the signal mechanism to restore.
prising a non reversible alternating current
26. A railway signalling machine com
electric motor pivoted to swing bodily, a prising a motor having a shaft for operat
signal mechanism having a continuously ing the signal, an armature surrounding said
acting restoring force tending to restore it shaft, a clutch means disposed between the
to normal position, a gear wheel connected interior of the armature and the outside of
115
120
125
1,483,612
the shaft, electromagnets for vibrating the. said motor to swing into operative engage
armature, and a pivoted frame for support
ing the motor.
27. A railway signalling machine com
prising a motor having a shaft, a multi-pole
armature mounted to surround said shaft,
resilient supports for said armature to con
15
trol the movements and position thereof, a
clutch means disposed between the inside of
the armature and the outside of the shaft,
means for vibrating the armature, and means
for connecting the motor shaft to the device
to be operated.
28. A railway signalling machine com
prising a non-reversible motor pivoted to
swing bodily, a signal mechanism having a
continuously-acting restoring force tending
to restore it to normal position mounted ad
jacent said motor, and means for causing
20
ment with said signal mechanism to operate
the signal.
. g
29. A railway signalling machine com—
prising a non~reversible motor pivoted to
swing bodily, a‘ signal mechanism having a
25
continuously-acting restoring force tending
to‘ restore it to normal position mounted ad
jacent said motor, and means for causing
said motor to swing into operative engage
ment with said signal mechanism to operate
the signal and also retain the signal in set
position.
In testimony whereof I a?ix my signature.
ALFRED ERNEST HUDD.
Witnesses:
.
WILLIAM F RANcrs GORDON-CAMPBELL,
RICHARD‘ MERCER.
30