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Патент USA US2113273

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April 5, 1938.
v. A. LEA'C'H
Filed Nov. 10', 1933
2 Sheets-Sheet 1
Z 2/ A?
Va/ A. Aeac/z,
April 5, 1938.
- “
Filed Nov. 10, 1933
2 Sheets-Sheet 2
Va/ 14. Leac?,
Patented Apr. 5, 19.38
' 2,113,273 _
N0. ‘97,434
My invention relates to a ?ashing signal sys
sion of a novel switch means associated with the‘
tem, and more particularly to a ?asher system
such as is employed to produce a ?ashing warn
impulse means, this switch preferably including
ing on highways, buoys, ships, etc. Many of the
5 existing ?ash-type signals are defective in that
the signal fails to function if the light source
burns out.
one or more movable and stationary contacts ar
ranged in a novel manner to eiftect a wiping ac
tion between the contacts.
Another object of the invention is to provide a
?asher system, the operating parts of which are
mounted in a novel manner so as to be readily
It is an object of the present invention to pro
accessible for purpose of inspection or repair.
In the drawings I have illustrated a preferred 10>
being successively connected in circuit as they . embodiment of the invention for the purpose of
vide an improved ?asher structure in which a
1'0 plurality of light sources are utilized, these sources
burn out.
Another object of the invention is to provide a
?asher system in which an intermittently oper
15 ated switch controls the periodic venergization of
de?niteness, though it should be distinctly un
derstood that the concepts of the invention may
takevvarious forms without departing from the
spirit of the invention.
one light source, and in which a mechanism is ~ 1
provided for bringing another light source into
circuit, this mechanism operating in a time inter
val which is less than the interval between en
ergizations. By this structure the system will
20 shift connections between ?ashes so that there
is no prolonged dark period between ?ashes as
the electrical connections are changed. This
completely eliminates any dark period during
, whichthe signal is incapable of performing its
25 warning function.
the door swung open to expose the operating
Fig. 2 is a sectional view of the re?ector and 20
light source taken on the line 2—2 of Fig. 1.
Fig. 3 is a sectional view taken on the line 3-4
of Fig. 1.
Fig. 4 is a sectional view taken on the line
1-4 of Fig. 1.
trating the oscillating member in an extreme >
It is a further object of the invention to pro
vide a novel impulse means for operating a ?ash
er signal or other device requiring an intermit
rearward position.
tent supply of current.
mediate position.
Further objects of the invention lie in the pro
vision of novel circuit elements interconnecting
the impulse means and the sequence switch which
brings the lamps successively into circuit.
It is a further object of the present invention
35- to provide a plurality of lamps which are suc
cessively movable through the focal point of a
re?ector system, and to control this movement in
a_ step-by-step fashion, the lamps being shifted
to bring a new lamp into the focus of the re
40 ?ector at such time as the previous lamp burn
Fig. 5 is a sectional view similar to Fig. 4 illus
Referring to these drawings,
Fig. 1 is a face view of the ?asher system with
It is a further object of the invention to pro
vide a novel ?asher system which includes- a
plurality of lamps which are successively con
5 nected in circuit with an intermittently operated
switch, and which system automatically ceases to
?ash when the last lamp comes into circuit, this
Fig. 8 illustrates the lamp structure in an inter
Fig. '1 illustrates this lamp structure in its ex
treme advanced position.
Fig. 8 is a top view of the escapement shown.
in Fig. 1.
‘Fig. 9 is a wiring diagram of the preferred em- 35
Referring particularly to Fig. 1, I haveashown
the invention as utilized in vconjunction with a
container 1 divided by a partition 8v to form a
re?ector compartment 9 and a control compart- 40
ment l0. A suitable re?ector means II is mount- 1
ed in the re?ector compartment 9. As shown this
re?ector means includes a cylindrical re?ector
I! to the rear of which a parabolical mirror i3
is secured.
The focal point of this mirror is 45
indicated by the numeral l4.‘
A cover I5 is preferably hinged to the container
1 by a hinge it so that when this cover is in closed
last lamp giving a steady light indicating the position it extends across the control compart
ment III, as best shown in Fig.‘ 2. A spring clip 50
condition which exists in the system.
5° A further object of the invention lies in the‘ I1 functions to hold this cover It in closed posi
provision of a limit switch for stopping the im
In the preferred embodiment, I prefer to extend
pulse means when the last lamp is brought into
the cover it forward to carry a lens or bull's-eye
the circuit.
ll retained in an annular. channel II ‘of the cover 55
Other objects of the invention lie in the provi
. 2,113,278
its extreme position shown in Fig. 7. The spring
_ I! by a suitable ring or other clamping means 2|
so that when the cover is swung into an open
contacts 58 and 55 thus define a limit switch, in- ,
position, as shown in Fig. 1, the lens is carried dicated in general by the numeral 58, which opens
therewith. It is preferableto form a tight jointv when the sector plate is in an extreme position.
between the cover l5 and the container 1 when
In the prefered embodiment, however, I prefer
the cover is in closed position. .This may be done
by a suitable gasket means, not shown, or the
to pivotally mount the lamp support as shown
so that the lamp contacts 81 to 5| move relative
cover 15 may include a forward extending ?ange to the master contact 88. In accomplishing this "
which telescopes with the container ‘I when the ' movement in a step-by-step manner I provide
10 cover is in closed position.
Portions of the re-‘
?ector I2 and the partition 8 are cut away to form'
an opening 22 through which the lamp support
ing structure may extend.
' _
Carried by the cover i5 is ashelf 24, the oper
ating mechanism being secured either to this
shelf or to the cover l5 so that when the cover
is opened this mechanism is completely exposed
for inspection, repair, replacement, etc. If de
sired, the entire cover and its associated mecha
20 nism can be replaced by simply removing the pin
of the hinge l8. In other instances repairs can
be readily made without detaching the cover l5.
Pivoted to the cover l5 as by a pin 28 carried
thereby is a sector plate 28 to which is secured
25 a lamp support 30 extending upward through the
opening 22, a spring 3| resiliently forcing the sec
' tor plate 23and the lamp support 38 toward its
an advancing means indicated in general by the 10
numeral '88 and including an escapement 8| op
erated by an operating means 82 in the form of
a relay providing a winding 83. This winding
surrounds a central post of a magnet frame 85,
there being an armature 88 pivoted at'one end 15
of the frame. A tension spring 81 tends to move
the‘ armature 88 upward,.but when the winding
83 is energized, this armature vis drawn downward
so as to bridge across. the relay frame, this down
ward position being shown in Fig. 6.,
The escapement 8i is of novel construction, as
best shown in Figs. 1 and 8. Referring to these
?gures, a base plate 88 is secured to the armature
88 and provides an upward extending wall 89.
The forward end of the plate 88 slopes upward 25
and is then bent downward, as best shown in Fig.
1, to provide a main stop 18 which is engageable
, extreme position indicated in Fig. 7. This lamp
with one of a plurality of pins ‘II when the ar
~ support 30' is preferably in the form of a pair of
mature is in its raisedposition, as shown in Fig. 1.
These stops are suitably secured to the sector 30
plate 29 and correspond in number to the lamps
arms 32 extending upward on opposite sides of
30 the
pin 28 and suitably secured to the sector
plate 29 as by a screw 33 or other suitable means.
A cross-arm 34 extends across the upper ends of
angular distance equal to the angular spacing of
the arms 32 and is bent to form a segment of a
the lamps so that when any of the pins ‘Ii are
in engagementywith the‘ main stop 18, one of the
35 circle formed about the axis of the pin 28. Suit
ably secured to and electrically connected with
the cross-arm 34 are' a plurality of sockets indi
cated, for instance, by the numeral 38, Fig. 2, each
They are spaced from each other an -
lamps will be positioned at the focal point l4..
The upward extending wall 89 is positioned in
front of the. pins ‘II, but the forward end of this
socket opening toward the re?ector l2 when the , wall is bent inward towards the pins to define an
cover 15 is closed. These sockets are so spaced auxiliary stop 13, best shown in Fig. 8, this stop 40
with respect 'to each other and with respect to being above the path of travel of the pins ‘II when
the pivotal axis formed by the pin 28 that-the
horizontal axis of these sockets will successively
intersect the focal point ll as the sectorplate
28 and lamp supports 38 are moved step-by-step
in a manner to be hereinafter described. Each
socket 38 carries -a light source in the form of a
' light bulb,‘ these bulbs being respectively desig
nated by the numerals 38 to 42, inclusive. Each
of these bulbs includes a ?lament, these ?laments
being so positioned as to be successively positioned
- at or near the focal point I‘ when the-lamp sup
the armature is in raised position;
In the operation of this escapement it will be
clear that one of the pins ‘II will be in-engage
ment with the main stop 18 when the armature
is in vraised position. When itis desired to bring
a new bulb into the circuit, the winding 83 is en
ergized, thus moving the armature 88 and es
capement 81 into the position’ shown in Fig. 6.
This moves the main stop 13 below the pin which
it previously engages so that this pin and the as
lsociated sector plate 28 move into an intermedi- '
ate position under the action of the spring 3| to
lamps is ?ashed at a_time, this lamp being the " bring the pin into engagement with the auxiliary
one which, is‘ positioned closest to the focal point stop 13, as best shown vin Fig. 6.‘ This permits
port 30 is moved step-by-step. Only one of the
18 at any instant of time.
the sector plate°28 and. the lamp support 38 to
A sequence. switch is provided for successively _'move through an_ angular distance which is a
energizing these lamps, this switch being indicat , fraction of the angular distance between lamps.
ed in general by the numeral 48 and including in This movement of the sector plate is sufficiently
large, however, to bring the next contact 58 be
detail a mastercontact 48 which successively en
gages lamp contacts " to SI, inclusive. These neath the master contact 88 so that the electric
lamp contacts are respectively connected to the impulse delivered to the lighting circuit is trans
live central ‘terminals of each of'the sockets 38, ferred to the next lamp associated with this con- "
being thereby respectively connected to the lamps tact v83. When the winding 83 is de-en'ergized
38 to 42, as best shown in‘ Fig. 9. These wires the-spring 81 moves the escapement 8| into its
are preferably positioned along and secured to upper position, thus permitting the next pin ,‘H
the arms 32 so ‘as to impede the reflected‘ light to come into engagement with the main stop ‘II,
the previous pin now moving beneath the auxil- ,
to a minimum degree.
The master contact 48 is preferably- mounted iarystop'l3 duetotheraising ofthisstop. The
in a base 53 formed of'insulating material. This ' sector plate 23 and the lamp support 33 will then
base also carries spring contacts 34 and 88 which be moved into its dotted line position indicated
‘are normally in contact with each other, the lat; by the numeral ‘I8 of Fig. 1'. In‘ actual operation
' er spring contact carrying an extension which the winding 83 is energized only momentarily and
is engageable by the sector plate 28 to separate the time interval required ‘to shift from one pin
76 these spring contacts when this sector plate is in ‘II toanotherhpreferablylesthan the timeiu
tervai between successive energiaations of the
Each time the winding 83 is momentarily en
ergized the mechanism will move to bring a new
and lower jeweled bearings 88 in which a shaft
8| is pivoted. This shaft carries an oscillating
member 88 which includes a bar-shaped arma
ture 84 and a disc 85. A hair-spring 81 is se
lamp into the focal point. when the last lamp cured to the pivot shaft 8|, the outer end being
comes into the focal point, the mechanism will held in a support 88 secured to the lower plate
assume a position as shown in Fig. 'I, the limit . 88. This hair-spring tends to turn the oscillat
switch 55 being- opened at this time, and the last ing member in a direction indicated by the ar
pin 1| being in engagement with the main stop row I88 of Fig. 4, this tendency toward counter‘
yclockwise rotation being overcome by a resilient 10
10 18. As will be hereinafter described, the en
gagement between this last pin and the. main contact means IM to be hereinafter described.
stop ‘I8 closes an auxiliary circuit, permitting cur -In Figs. 3 and 4‘ the oscillating member is shown
rent to ?ow continuously through the last bulb 88. in its neutral position which it assumes when the
system is de-energized.
A suitable .control means is provided for ma
The oscillating member 88 is caused to oscil 15
15 mentarily energizing the winding 88 when one of the lamps burns out. Included in this control late by electric impulsesmomentarily delivered
means is a ‘control relay 'I'I including an armature
18 preferably pivoted to a relay frame 18. The
relay 'I‘l includes two windings so that energize.
20 tion of either winding will attract the armature
‘I8. If desired, this relaymay be of -'a floating,
to an actuating means I85 which is preferably in.
the form of a pair of electroinagnets I85. As best
shown in Fig. 3, the cores of these electromag- ‘
nets I88 are spaced from each other on a line 20
which is anguiarly disposed. with respect to the
type, these windings being simultaneously en- > axis of the armature 84., Momentary energiza
ergized at successive instants of time so as to tion of the pair of windings I85, or either of them,
maintain the armature in neutral position. En-' will thus tendto set up a momentary torque
25 ergization of either winding alone, will, however, tending to rotate the armature 84 in a clock 25
upset the balance and cause the armature ‘I8 wise direction, as indicated by the numeral |88 of
Fig. 3. The system is so designed that only a
to close a circuit supplying current to the wind
ing 63. In the preferred embodiment, however, I ‘momentary impulse is delivered to the actuating
preferto bias the armature 18 by a spring 88, means I85, this impulse being timed to swing
30 and to so position the windings that energization the oscillating member 83 through successively 30
of either winding will attract the armature 18. larger angular paths until an equilibrium condi
So also, the forward end of this armature car
ries a movable contact which is normally held
in engagement with a stationary contact 82 by
35 the spring 88, these contacts providing a con-.
trol switch 88. In this form‘the two windings
are indicated respectively in Fig. 9 by the nu
merals 84 and 85. One of these windings is con
nected in series with the lamp circuit and the
40 other is connected to a holding circuit so that
when these windings are alternately energized
the armature 18 will always be retained in its
lower position, thus separating the contacts
tion is reached, at which time the energy sup
plied to the actuating means I85 is just suf
ficient to overcome the frictional forces.
system thus requires only a minute amount of 35
energy. In addition, the switch means 85 is
self-starting, a very important feature of the
present design. It will, of course, be understood
that the period of‘ oscillation of the member 93
can be controlled by changing-the weight of this 40
member. Thus, if slower oscillation is’ desired,
it is only necessary to add ‘weight members to
the oscillating member 83.
thereof. If, however, the lamps should burn . _ The intermittent energization of the actuating
means |85,-and the intermittent supply of cur-' 45
45 out, the system will become magnetically un
balanced and the spring will move the armature ' rent to the lamp circuits‘, are controlled by the
contact means I8I. In the preferred embodi
to close the contact, thus actuating the oper
ating means 62. The magnetic ?ux generated ‘ ment, this contact means, best shown in Figs.‘
by either of the windings 84 or 85 may be large
4 and 5, includes a set of main contacts “8 and
enough to attract the armature ‘I8.' However,
a set of auxiliary contacts III, though the latter 50
may sometimes be dispensed with, as will be
this is not always necessary, for the function of
the auxiliary winding 85 connected to the hold
ing circuit is merely to hold the armature down.
once it has been moved downward by the mag
55 netic flux set up by the winding 84. A smaller
amount of flux is needed to hold the armature
hereinafter described. The set of main con
tacts includes a stationary contact “2 and a
movable contact “8, .the former being suitably "
secured to the lower plate 88 of the frame as by 55
a bracket “4. The movable contact “8 is of
down than is required to move this armature into > much smaller size than the stationary contact
a downward position. Thus, the ?ux set up by “2 in the ‘preferred embodiment. This movable
the winding 85 need not be sumciently great to contact is carried on an arm II5 preferablyuof
actually move the armature ‘I8.
' . '
resilient construction and extends to the left of
An impulse means in the form of an inter
the pivot shaft 8| as viewed in Fig. 4. The rear ~
mittently operated main switch means 88 is used end of this arm H5 is attached to the oscillating
for periodically connecting a potential supply member 88 by means of a bracket “5 extending
source to the remainder of the circuit, thereby downwardly from the disc 85.
65 ?ashing the lamp which is positioned at the focal
point. This main switch means is of novel con
struction regardless of the particular mode in
which it is connected to the remaining elements
of the circuit, and also ?nds utility in other com
As best shown in Fig. 1, this switch means in
cludes upper and lower plates 81 and 88 spaced
The auxiliary set of contacts III is preferably
formed by a stationary contact I28 and a 'mov-.
able contact III, the former being considerably,
larger than the latter and being secured to the
lower plate 88 of the frame as by a bracket I22.
The movable contact III is carried arm I28
which is preferably of resilient construction and
apart by spacing members 88 to form a-frame which extends on the opposite side of ‘the pivot
structure suitably secured to the shelf 24 of the. shaft 8| fromthe arm H5. The end‘of this re
silient arm-I28 is carried by the oscillating mem 1
75 cover ~I5." This frame structure carries
ber 93 through the‘ medium of a bracket I25 ex- _
tending downward from the disc 95, _
The spring arms H5 and I23_are, among other
fterial voltage dropv due to current passing
through points'formed on the contact surfaces. '
things, utilized in absorbing the recoil energy
The pitting takes place on the contact connected
to the positive terminal of the source, while the
of the oscillating member .93. Thus, a counter
clockwise movement of the oscillating member,
“as indicated by the arrow I00 of Fig. 4, will cause
the negative terminal. Thus I prefer to connect
points are formed on the contact connected to
. the source as shown in Fig. 9.
the brackets H6 and I25 to be shifted toward or
As best shown in Fig. 4, when the ‘oscillating
into the position shown in Fig. 5. Due to the member 93 is in a neutral position I prefer to
10 factthat the arm I I5 is secured'to the oscillating .have the main set of .contacts H0 closed. At 10
member at a point which is disaligned from a this time the auxiliary set of, contacts III ‘may
_ ‘ line connecting the stationary and movable con
be either open or closed, the system being so
tacts H2 and H3 when these contacts are slight
designed that the auxiliary set ‘of contacts III
ly separated, the distance .between the bracket . closes just before, just after, or simultaneously
H6 and the stationary contact H2 will decrease ‘with the main set of contacts H0. In the pre
during this counter-clockwise movement of the ferred embodiment the auxiliary contacts III
oscillating member. In view of the fact that the close an instant after the main set of contacts
, arm H5 is of constant length, this recoil move~~
ment of the oscillating member will cause the
20 movable contact -I I3 'to move outward along the
stationary contact H2 toward or into its posi
tion shown in Fig. 5, thus effecting a very desir
able wiping action which keeps these contacts
H0, assuming that the oscillating member is
moving counter-clockwise as-indicated by the
arrow I00 on its recoil movement. In this form 20
of the invention the auxiliary set ‘of contacts III
will be slightly open when the oscillating member ‘
is in neutral position, as shown in ,Fig. 4.
Any forward movement of the oscillating‘
clean at all times. It will also be noted that dur
25 ing this recoil movement of the oscillating mem
ber the spring arm H5 is ?exed toward or into
its position shown in Fig. 5. This ?exing serves
to momentarily store some of the recoil energy of "
the oscillating member, returning this energy
30 thereto at a later instant of time when the os
cillating member starts‘toturn in a forward di
rection. In addition, this ?exing action is very
desirable in that the forward end of the arm H5
which carries the contact I I3 is always parallel
35 to the contact face of the stationary contact H2.
This insures surface-to-surface contact between
the movable and stationary contacts H2 and H3
as distinguished from a line contact which would
take place if this forward end of the arm II 5
40 were not maintained substantially parallel to the
- contact surface of the contact H2.
A stop I26
extends upward from the lower plate 88 in the
path of travel of the bracket H5,- and engages
this bracket to prevent any excessive recoil
45 movement such as might move the movable con
tact H3 off the stationary contact H2. Similar
ly, the movable contact I2I of the auxiliary set
of contacts III will move outward across the
stationary contact I20 with substantially the
same wiping action.
I have further found that a very minute pit
ting inevitably occurs upon either the moving
or the stationary contacts of the sets H0 and
I I I, corresponding points or domes being formed
55 on the other contact.
I have further found
that by reversing the connections of the poten
tial source, this pitting and building up can be
made to shift from one contact to the other. In
the preferred embodiment I prefer to so connect
the source that any pitting which takes place
will occur on the moving contacts H3 and I2I,
while the points or domes are formed on the
stationary contacts H2 and‘ I20. Thus, as these
movable contacts slide outward on either of the
65 respective stationary contacts, there will be no
tendency _to gouge the outer portions of these
stationary contacts due to points formed on the
movable contact. Further, pitting and point
formation take place only during the breaking of
the circuit so that points or domes are formed
on the stationary contacts only at those portions
which are ?rst engaged by the movable contacts.
As these movable contacts slide outward, they
leave this zone and slide onto an entirely ?at
76 surface, thus removing all possibility of any ma
member 93 will cause the bracket H6 to engage 25
the arm I23 and the bracket I25 to engage the
arm I I5, thus respectively moving the contacts
I2I and H3 from thevicinity of the stationary
contacts I20 and H2.
During this forward
movement in a direction indicated by the arrow 30
I30 of Fig. 4, the arms H5 and I23 will maintain
their relative positions shown in Fig. 4. If de
sired, this forward movement may be limitedby
engagement between the stop I26 and the brack
The preferred method of electrically connect
ing the elements hereinbefore described is dis
closed in Fig. 9 in which the numeral I35 indi
cates the potential source in the form of a series _
of dry cells or suitable storage battery. A con
ductor I36 connects ‘the positive terminal of the
source I35 to the winding 84, the other terminal
of this winding being connected by a conductor
I31 to the master contact 46 of the sequence
switch 45. The current then flows through the
corresponding ‘conductor to the corresponding 45
lamp and returns to the ‘cross-arm 34 which is
grounded as indicated by the numeral I39. This
lamp circuit is completed from ground through
the contact means IOI, returning to the negative
terminal of the battery through a conductor I40
connected to the stationary contact H4. Two
paths of current-?ow through this contact.
means IOI are provided. Onepath includes the
hair-spring 91 which is grounded as indicated by
the numeral “I so' that the current may ?ow 55
from ground through this hair-spring to the
pivot shaft 9i and thence to the disc 95, reach- '
ing the contact arm II 5 through the bracket
and thus being carried through the main
of contacts H2 to the conductor I40. On
other hand, if theauxiliary set of contacts
the 60
is closed, this current may flow from ground '
through a conductor I42 connected to the ‘sta
tionarycontact I20 and thence through the arm
I 23, the bracket I25, the disc 95,4 the bracket H6,
the arm I IS, the stationary set of contacts I I2
to the conductor I40. In either instance it will
be clear that the lamp circuit is only energized
when the main set of contacts I I2 is closed, these 70
contacts being closedduring the recoil movement
of the oscillating member 93.
So also, it will be clear that energy is delivered
to the actuating means I05 including the pair
of electromagnets I06 only during the time that 75
the main set of contacts In is clo: m. 'The cur-
'fact that the resistance or the path through the
rent in this instance ?ows from the positive side
of the battery I35 through the conductor I38,
main'set of contacts II2-is much lower than the
resistance of the path including the winding 85.
and through a conductor means I45 including the
In this way the windings 84 and 85 are succes
limit switch 55, thence through the electro
magnets I08 in series and to ground, the current
returning through the contact means IOI by
‘either of the paths previously mentioned.
I have found that the hair-spring 91 must
necessarily be small so that if the current re
quired by the lamps and the actuating means
sively energized. The magnetic action set up by
either of these windings does not, however, be- 1
come zero immediately upon the de-energization
thereof. Instead, there is a slight overlapping in
the magnetic action as set up respectively by the
windings“ and 85 so that the contact switch 88' 10
is maintained open so long as these windings are
I05 were continuously passed through this hair- . successively energized.
However, any action which tends to prevent
spring, there would be danger of this spring over
heating to‘ such a degree that the temper would 1' this successive energization of the windings'84
15 be impaired. To prevent any possibility of such and 85 will cause an unbalanced condition al 15
lowing the contact switch 83 to close. Thus, if
action, the auxiliary set of contacts “I is uti
lized, it being clear from Fig. 9 that this set of the particular lamp electrically connected in the I
contacts is in parallel with the hair-spring 81. lamp circuit by the selector switch 45 burns out,
Thus, in the form shown, the lamp current passes ' the current through the winding 84 will drop and
20 through the. hair-spring 31 only for a very short ' the spring 80 will close the contact switch 83. A 20
circuit will then be completed through the con
instant of time until the auxiliary set of con
ductor I38, the con-ductor means I45, the limit
tacts III closes, after which the current is by
' passed through these auxiliary contacts and is switch 58, the current reaching the winding 83
not required to pass through the hair-spring 81. of the advancing means through a conductor
I55. This current returns through a conductor 25
25 In this connection it will be clear that the oscil
lating member 93 is not at ground potential due I88 connected to the contact switch 83 and flows
to the negative terminal of the battery through
to the fact that it rotates in jeweled bearings.
In other instances, however, it is possible to the conductor I50 and through the contact
‘dispense with the auxiliary set of contacts III means- IOI, as previously described. The closing’
30 by forming the hair-spring 81 of sufiicient size 'of the main set of contacts II! during the time 30
to carry this current or by utilizing smaller that the control switch 83_is closed will thus
lamps. .In other instances it is possible to have. draw the armature 88 and its,associated escape
the auxiliary set of contacts III closed before ment 8I into the position shown in Fig. .6. This
the main set of contacts I I2 closes. In this way will instantaneously shift the'sector plate 29 into
its positionshown in Fig. 6, thus connecting a 35
it is possible to entirely eliminate any current
so ?ow through the hair-spring 81, though the sys
tem ‘will not then be self-starting.
It will. be clear that the winding 84 of the
control means is thus intermittently energized,
the current ?owing through the lamp circuit
also ?owing through the winding 84 which is
connected in series therewith. The magnetic
?ux set up by this winding is su?icient to draw
the armature ‘I8 downward, thus opening the
contact switches 83. During the time that the
lamp circuit and the winding 84 are not ener
new lamp in circuit with the source.
The cur
rent ?owing through this new lamp will also ?ow
through the winding 84 and thus again open the
control switch 83, the current through this new
lamp being broken when the main set of con
tacts II2 separates. It will thus be clear that in
the'system herein shown there ‘will be no dark
period ‘during the time that the mechanism is
shifting from one lamp to another. Instead, the
?ashes will continue at the usual time-interval 45
as determined by the period of oscillation of the
gized, it is necessary to pass a current through oscillating member 83.
Should successive lamps burn out, the sector
the winding 85 su?lcient to maintain the contact
switch 83 open. In the preferred embodiment , plate 29 and the lamp support 30 will be moved
step-by-step until thrown into the position shown 50
50 the windings 84 and 85 are successively energized
in Fig. '1, at which time the last lamp is adjacent‘
to accomplish this result. In effecting energiza
tion of the winding 85 current may ?ow through thefocal point I4. At this time the limit switch
the ‘conductor I38, the conductor means I45, and 58 opens, thus de-energizing the actuating means
the limit switch 58, thence through the actuating I05 including the pair of windings I08 so that the
55 ‘means I05. The current may then return to the oscillating member will coast to a standstill.
A new circuit is completed at the instant that
negative terminal ofthe source through a con- '
ductor I50 connected to the armature ‘I8 and to the last pin 'II comes into contact with the main
stop ‘I0 of the escapement, these elements form
one terminal of the winding 85, the other termi
nal of this winding being connected by a con
60 ductor I5I to the source and also being con
nected by a conductor I52 to the last pin 1| for
a purpose to be hereinafter described. The
amount of current ?owing through the conductor
‘I50, .the winding 85, and the conductor‘ I5I is
65 very minute so that the winding 85 ordinarily in
cludes a large number of turns so that the
requisite ?ux can be set up. It will be‘ noted,
however, that the contact means MI is con
nected vin short-circuiting relation with the cir
.cuit including the conductor I50, the winding
85,’ and the'conductor I5I. Thus current flows
through the winding 85 only during the time that
the main set of contacts III is open, for when
~ , this set of contacts closes, substantially no our
75 rent ?ows through the winding 85 due to the
ing a supplemental switch means. At this time
current may ?ow from the source I35 through the
conductor I38, the winding 84, the conductor
I3'I, the master contact 48 of the selector switch,
and the lamp contact 41, this current then re
turning through an auxiliary circuit by ?owing
through the lamp 38 and through the ground I39 as,
to the armature 88 which is grounded as indi
cated by the numeral I80, the current ?owing
through the stop ‘I0, the pin ‘II, the conductors .
I52 and I5I to the negative terminal ofthe source
I35. Thus, a continuous current ?ows through 70
the last lamp 38 and through the auxiliary circuit
connected in parallel with the switch means 88,
indicating to the inspector that all of the lamps
have burned out and that replacement is neces
2,1 18,873
In general, then, it will be clear that if the
rality of lamps; a lamp circuit;- means for suc
source 135 is connected to the circuit when the ~ cessively connecting said lamps in said lamp cir
contact means Ill is in the position. shown, two cuit and including a sequence switch providing a
' circuits will be completed. One of these circuits master contact connected to said lamp circuit
is the lamp circuit, including the winding 84 and a plurality of successively arranged lamp
and one of the lamps, as previously-described. contacts and means respectively connecting each
Energization of this circuit, of course, opens the of said lamp contacts to one of said lamps where
by movement resulting in successive contact be- I
control switch 83. A second or actuating cir
cuit is completed through ‘the limit switch 56, the tween said master contact and said lamp con
10 actuating means I05, and the contact means IN. tacts brings said lamps successively into said lamp 10
The system is made self-starting by the momen
circuit; a drive means for said sequence switch
tary current passed throughthe hair-spring 91.,
and providing an escapement controlling the
movement thereof, movement of said escapement
for the ?rst small impulse exerted to advance ' to one extreme position advancing said sequence
switch to a given position for contacting another 15
15 the oscillating member 93. It will be clear, how
of said lamp contacts, subsequent movement of
ever, that as soon asthe set of contacts “2 sepa
~rates, both the lamp and the actuating circuits . said escapement to another extreme position v
causing no movement of said sequence switch
" are broken.
suiiicient to disengage said master contact and
On the recoil movement of the oscillating mem
20 ber 93, the set of switch contacts “2 "will first i said other of said lamp contacts; operating means 20
for moving said escapement from‘ one extreme
be closed to establish the lamp and actuating cir
This hair-spring thus carries su?icient current
cuits previously mentioned, the current ?owing
I ‘through the hair-spring 91 for a very short in
terval of time until the recoil movement has closed
position to the other and for returning the same ‘
to said one extreme position; control means for'
actuating said operating means, said control
25 the set of switch contacts I I I, at which time the
‘means including a relay means electrically con
hair-spring 97 is by-passed so that substantially
no current will thereafter flow therethrough dur
ing the recoil movement of the oscillating mem
ber 93. However, during this recoil movement
30 the lamp circuit will be energized as will also
the actuating circuit. The result is that the
nected to said lamp circuit to be responsive to
magnetic force exerted by the actuating means
‘tends to stop this recoil movement and reverse
the current ?owing through said master contact
and including means operated by said relay means
for actuating said operating means; a iiasher'
switch connected to said lamp circuit to inter
circuit by operation of said ?asher switch.
3. In combination in a ?asher system: a plu
switch elements H2 is opened. It will also be
rality of lamps; a. potential source; a relay pro
clear that the hair-spring 91 may conduct cur
viding an armature biased to move from a given‘
rent ?owing through the lamp and actuating cir
position and providing main and auxiliary wind
ings each acting when energized to hold said
cuits for the short interval of time between the
40 separation of the set. of switch elements Ill and
H2. As previously mentioned, separation of the
set of switch contacts I I2 will energize’ the hold
ing circuit including the winding 85.
30 >
mittently energize the same; and means for. pre
venting operation of said control means during
normal periods of deenergization of said lamp
35 through the actuating circuit until theset of
the oscillating member 93, current ?owing
armature in’ said given position; switch means;
actuating means for intermittently closing said
switch means and including a winding; circuit
means connected to said switch means, said po
tential source, said windings and one of said
It.will thus beclear that in the preferred em
bodiment the windings 84 and 85 are successively lamps for alternately energizing said main and 45
energized and that the actuating circuit and the auxiliary windings when said switch means opens
lamp circuit are energized only during the time , and closes, said circuit means including a. lamp
circuit connecting said main winding-and said
that the. contacts H2 are closed.
one of said lamps in series circuit with said
-' ' The self-starting feature of the invention is an
switch means and said potential source whereby 50
50 important one, as well as the provision of a dual
winding balanced relay._ So also, the feature burning out of ‘said one of said lamp means
wherein the oscillating means is moved through prevents energization ‘of said main winding in
successive impulses applied to the actuating timeto hold said armature in said given posi
means I05 is a novel one and permits operation tion whereby said biased armature moves into _
55 of the system with a minimum of current-?ow. another position, said circuit means also includ 65
In actual tests one set of dry batteries has been ing a circuit connecting said winding of said
found to operate the structure for a period of actuating means in series with said switch means
and said potential source whereby said winding
elght to ten months or more.
So also, the lamp shifting feature herein illus
6.0 trated forms an important detail of the present
I claim as my invention:
1. In a ?asher, the combination of: a container
providing a control compartment and a re?ector
65 compartment; a .cover hinged to said ‘container
for closing both compartments; a lens carried
by said cover and positioned to extend in front
of said re?ector compartment when said cover
is closed; a lamp means in said‘ re?ector com
70 partment and supported by said cover, a switch
means in said control compartment; and means
is intermittently energized when said switch
means closes; and means responsive to movement 60
of said armature from said given position to
said other position for energizing another of
said lamps.
~ '
4. In combination in a ?asher system: a_plu
rality of lamps; a lamp circuit including a. po-v 65
tential source; sequence switch means for suc
cessively connecting said lamps in said lamp
circuit when moved step-by-step; advancing
means for moving said sequence switch means
step-by-step; a control means including a con 70
trol switch and a pair of windings for individu
supported by- said cover in-said control compart ' ally operating said control switch, one of said
ment for intermittently closing said switch means windings being connected in series with said
. 'to intermittently energize said lamp means.‘
2. In-combination in a ?asher system: a. plu-'
lamp circuit so as to be energized by the‘ current
?owing to said sequence switch means; circuit
restricted opening and into said re?ector compartment; a pluralityof lamps mounted on said
means connecting said potential source to said
advancing means through said control'switch;
means for intermittently closing said lamp cir
cuit and alternately energizing said windings and
including a main switch means in said lamp cir
cuit and electrically connected to the‘ other of
movable portion within said re?ector compart
ment; advancing means in said control compart
ment for moving said movable portion step-by
step to successively shift said lamps into an"
operating position; a lamp circuit including an
1 said windings and including actuating means
intermittent switch in said control compartment
for said main switch means, said actuating means
providing a winding; and circuit means con
necting said winding of said actuating means
in circuit with said potential source and said
main switch means.
for , intermittently energizing said operating
lamp; control means in said control compart 10
ment for actuating said advancing means to
move said movable portion one step and includ
ing means for preventing actuation of said ad
vancing means during normal ?ashing of said
operating lamp; . and means for de-energizing
5. In combination in a ?asher system: a series
of lamps; a lamp circuit including one of said
15 lamps; means for connecting another. of said
said intermittent switchwhen said movable por
lamps to said lamp circuit upon burn-out of a
preceding lamp; a switch means connected in
said lamp circuit; means for intermittently clos
ing said switch means; and means for eliminat
20 ing said switch means from said lamp circuit
tion has moved to a predetermined position.
8. In combination in a ?asher system: a plu
rality of lamps; a lamp circuit; sequence switch
means in said lamp circuit for successively con 20
necting said lamps in said lamp circuit; an elec
tric'operating means controlling said sequence
switch means; a control switch for said operating
means and electrically connected thereto; a dual
when the last of ' said series of lamps is con
nected to said lamp circuit by said ?rst-named
means; and means for continuously energizing
said last one of said lamps after said switch
25 means has been eliminated to indicate that the
last lamp of said series of lamps is in said lamp
winding relay for 'controllingsaid control switch, >
one of the windings of said relay being electri
cally connected to said lamp circuit; and means
circuit. :
including an intermittent switch means con
6. In combination in a ?asher system: a plu
nected in said lamp circuit, and means electri
rality of lamps; a lamp'circuit including a po
cally connecting said intermittent switch means
30 tential source and one of said lamps; a switch
means in said lamp circuit; a-sequence switch
movable to successively connect said lamp cir
cuit to said lamps through said switch means;
electrically energizable actuating means con
to the other‘ of said windings in a manner to
alternately supply current to said lamp circuit
and to said other of said windings, said relay
holding said control switch in a given position
until said dual windings become unbalanced by
change in current conditions‘ in one winding
35 structed and arranged to periodically close said
switch means; advancing means for moving said
sequence switch step—by-step; control means in
cluding a control switch for energizing said ad
vancing means, means for closing said control
40 switch when said lamp circuit is broken by burn
relative to the other.
9. In combination in a ?asher system: a lamp
circuit; means for intermittently energizing said
lamp circuit including a switch means and means 40
out of said lamp connected to said lamp cit-
for periodically closing said switch means; a pin
- movement of said sequence switch to a prede
means when the lamp, connected to said lamp
cult, and means preventing the closing of said rality of lamps; sequence means for successively
control switch by the normal periodic ?ashing . connecting said lamps to said lamp circuit, said
of said lamp connected to said lamp circuit; means including a sequence switch: quick-acting
and means including a limit switch operated by advancing means for actuating said sequence
termined position to de-energize said actuating
'I. In a’ ?asher, the combination of: a con
50 tainer ‘having walls forming a re?ector com
partment and a control compartment communi
cating through a restricted opening; a lamp sup
port mounted in said control compartment and
I having a movable portion extending through
circuit burns out to connect a succeeding lamp
to said lamp circuit before saidswitch means
is again closed and without interrupting the
periodic closings thereof; and means for pre
venting actuation of said advancing means by
the periodic energization and de-energization 0
said lamp circuit by said switch means.
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