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Патент USA US3022501

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Feb. 20, 1962
M‘R. DOSAL
3,022,491
TRAFFIC LIGHTS
5 Sheets-Sheet 1_
Filed March 11, 1960
/
k
.
INVENTOR
MAR-rm R. DOSAL
Feb. 20, 1962
M. R. DOSAL
3,022,491
TRAFFIC LIGHTS
5 Sheets~Sheet 2
Filed March 11, 1960
INVENTOR
Martin Rober'rO Ddsol
Bf
ATTORNEY
Feb. 20, 1962
M. R. DOSAL
3,022,491
TRAFFIC LIGHTS
Filed March 11, 1960
5 Sheets-Sheet 3
INVEA/TOR
MARTIN ROBERTO DOSAL
erg/4
Feb. 20, 1962
M. R. DOSAL
3,022,491
TRAFFIC LIGHTS
Filed March 11, 1960
5 Sheets-Sheet 4
Fla.
Trq ffic Lin e
Traffic L ine
L-IX
,_
Traffic Line
INVENTOR
Traffic Line
FIG" 8'. M‘jnin Roberto Dosdl
W
Feb. 20, 1962
3,022,491
M. R. DOSAL
TRAFFIC LIGHTS
Filed March 11,v 1960
5 Sheets-Sheet 5
v
‘ MARTIN
INVENTOR
ROBERTO DOSAL
ATTORNEY
United States Patent O?ice
3,022,491
Patented Feb. 20, 1962
2
1
FIG. 11 is a view similar to FIG. 10, showing the claw
3,022,491
in inoperative position.
TRAFFIC LIGHTS
Martin Roberto Dosal, Box 53—62, Miami Shores, Fla.
Filed Mar. 11, 1960, Ser. No. 14,276
'
3 Claims. (Cl. 340-—133)
My invention consists in a new and useful improvement
in a traf?c light for controlling the ?ow of traf?c on two
intersecting highways. The peculiarly novel and useful
FIG. 12 is a horizontal section on the line 12—12 of
FIG. 4, in the direction of the arrows.
FIG. 13 is an enlarged, top plan of a pivoted lug for
moving an auxiliary frame.
FIG. 14 is a wiring diagram showing the circuits for-v ’
the bulb and the rotor, and a multiple switch therefor.
As shown in the drawings, my apparatus’has an octa
feature of my apparatus is the combination of a single, 10. gonal casing C (FIG. 2) having four closed sides 6-1
and four open sides C-Z alternating with the sides C-l,
steadily illuminated lamp for a series of translucent,
top wall C—3 (FIGS. 4 and 5) with a canbpyC-Al- (FIG.
colored panes disposed thereabout, a rotor carrying said
3) and a bottom closure wall C-5 having a hinge C-6
panes, and mechanism adapted to dispose the rotor in
on one, side C-2 and a keeper C-7 on the opposite side
successive positions to display said colored panes during
15 C-2 (FIG. 3).
'
successive rest periods.
It, will be noted that the open sides C—2 are disposed
Of great importance in my apparatus is the fact that
there is no possibility of confusion as to the color dis
athwart the tra?‘ic lines L and L-l when the apparatus 7
played in each period, because only one colored light
is mounted by a cable 1 (FIG. 1).
Each side C-Z has a protective cowl C-—8 (FIGS. 2
can appear at a time.
Sunlight cannot cause any con
fusion as to which colored light is shown, as may happen 20
and 3).
in the present form of traf?c light.
The apparatus is mounted on the cable 1 by a suitable
clamp C-9 bolted to the cable 1 and from which de
My apparatus needs only one operating mechanism to
'
control the ?ow of electric current to an electro-magnet
pends the casing C (FIGS. 1, 2 and 3).
for moving the rotor at time intervals, determined by a
pre-set timer in said mechanism.
For manual control of my apparatus, there can be
provided a manual switch for alternative use to control
the ?ow of electricity, at the will of the operator.
The apparatus has an octagonal‘ signalling rotor S so
dimensioned as to be rotatable in the casing C. The
rotor has a top wall S.~1 (FIG. '6) suspended from a
hollow shaft S—2 having an inverted conical head S~3
removably attached to the shaft S—2 by bolts'vS—4, and
My apparatus has the great advantage of extremely light
rotatable on- a ball~bearing ring S-S centrally mounted
weight. It is operated by normal electric current and re 30 in the top~C—3 of the casing C. The rotor S is provided
on its eight sides with a pair of diametrical green panels
quires a single ‘light bulb instead of twelve bulbs as in
the present tra?ic light for intersecting highways.
G, a pair of diametrical amber panels A, and two pairs
of diametrical red panels R‘ (FIG. 8). These panels G,
My apparatus can also be used to exhibit ?ashing lights,
A and R are translucent for passage of light supplied by
amber lights for one of said highways and red lights for
the other highway. For such use, the movable rotor is 35 an electric bulb B suitably mounted on the inner face of
the bottom wall C—5 of the casing C, and centrally dis
stopped and the single bulb is caused to ?ash at intervals.
posed relative the panels G, A and R when the hinged
It can also be used to indicate a period in which vehicular
tra?ic on both intersecting highways be stopped to permit
Wall C—5 is in closed position (FIG. 4).
I will now describe the mechanism for rotating the rotor
pedestrian tra?‘ic to cross both of said highways.
40
S. Suitably mounted on the. top wall C-3 of the casing
It is important to note that the single bulb of my ap
C (FIG. 6) there is a bridge M carrying‘a ball-bearing
paratus is continuously actuated rather than intermittently,
ringlvid in which is journaled a bolt M—Z threaded into
and therefore it will'have much longer life than the bulbs
an operating arm M—3 oscillatable on the ‘bearing ring
which are intermittently actuated in the present form of
M—I. On each end _'Of the arm M-3 there is pivoted a
tra?‘ic light.
“
' If the electro-magnet needs capacitors or transformers, 45 depending claw M—4 (FIGS. 9, 10 and 11). These claws
M—4 are received through arcuate slots M—S in the top
these can be installed in the casing carrying the device,
thus being protected from the elements.
While I illustrate in the drawings and hereinafter fully
describe one speci?c embodiment of my invention, it is
wall C—3 of the casing C (FIGS. 4, 5, 9, lO‘and 11).
Suitably mounted on the top wall 0-?) there are two
electro-magnets M—é so disposed relative the pivot bolt
to be distinctly understood that I do not consider my in 50 M—Z of the operating arm M—3 as to swing the aim M—3
counter-clockwise as viewed in FIG. 5, when energized
vention to be limited to said embodiment but refer for
by suitable electric current supplied thereto by the wires
its scope to the claims appended hereto.
In the drawings:
~
M—7, the arm M—3 being of material attracted by the
FIG. 1 is a perspective of my improved traf?c light
magnets M-6. The top wall S—1 of the rotor S (FIG. 12)
55 has a plurality of slots M—8 adapted to receive therein the
suspended above the intersection of two highways.
FIG. 2 is a an enlarged top plan of thelight.
FIG. 3 is an enlarged side elevation of the light.
ends M—9 of the claws M—4 to cause the claws‘ M—4 to
engage the rotor S to oscillate same when the arm M-3
FIG. 4 is a vertical section on the line 4-—4 of FIG. 2,
is swung under action ofmagnetsMAi. A- spring M—10
(FIG. 5 ) having one end attached to the top wallC-3
in the direction of the arrows.
.
FIG .5 is a horizontal section on the line 5——-5 of FIG.
4, in the direction of the arrows.
FIG. 6 is an enlarged vertical section on the line 6—6
of FIG. 5, in the direction of the arrows.
_~
FIG. 7 is a vertical section on the line 7-—7 of FIG, 6,
and its other end attached to the arm M~3 returns the
arm M—3 to its normal position when'the magnets M—6
are deenergized.
As shown in FIGS. 10 and 11, when the arm M-3 under
action of magnets M—6 is swung in the direction of the
65 arrow shown inFIG. 10, the claws M—4 will drop into
in the direction of the arrows.
‘
FIG. 8 is a horizontal section on the line 8-4-8 of FIG.
the slots M—8 to cause the claws M—4 to engage the rotor
4, in the direction of the arrows.
S to oscillate same, and when the arm M—3 under action
FIG. 9 is an enlarged, fragmentary end elevation of one
of the spring M;—1~tl.is swung in the direction of the arrow
shown in FIG. 11 the claws M—4 will be withdrawn from
of the claws and‘rnount therefor, for moving the rotor.
FIG. 10 is a vertical section on the line 10-10 of FIG. 70 the slots M-8 ‘and will slide along the top wall 8-1 of
9, in the direction of the arrows, showing the claw in
operative position.
the rotor S.‘ ,
. '
I
'
The top wall S-l'of the ‘rotor S (FIG. 12) has a plu
3
rality of slots M41 with which co-act spring ?ngers M~li2
depending from the top wall C-3 of the casing C (FIG.
4) to stabilize the rotor S in each adjusted position,
rotor S are moved from the closed sides C-l to the open
sides C-2 of the casing C, thereby changing the lights for
the two lines L and L-l.
In order to provide means for indicating a period in
It is to be noted (FIG. 8) that the two panels G for
which vehicular tra?ic on both of the intersecting high
showing green lights, the two panels A for showing amber
ways be stopped to permit pedestrian tra?ic to cross both
lights and the four panels R for showing red lights are
of said highways, my apparatus is provided with an aux
so related that the counter-clockwise rotation of the rotor
iliary frame F (FIGS. 6, 7 and 8) comprising a pair of
S causes the following successive signals: (1) green for
rectangular end plates F—1 each having a translucent red
line L and red for line L-l, (2) amber for line L and red
pane F~2 and connected at their corners by rods F-3. 10 for line L4, and (3) green for line L—1 and red for
line L.
'
I
The upper pair of rods F-3 are connected at their mid
points by a rod F—4 (FIG. 8) which is carried by a shaft
It is obvious that the proper period for display of each
signal is, determined by the pre-set timer mechanism.
F-é’. (FIGS. 6 and 8) journaled in the hollow shaft 8-2
The foregoing described functioning of my device oc
of the rotor S, and having an inverted, conical head F~6
threaded thereon. The head F-6 is oscillatable on a 15 curs when the signals are designed for control of both
ballebearing ring F-7 mounted on the top wall C-3 of the
vehicular and pedestrian tra?ic at the intersection of the
highways, the auxiliary frame F not being used.
casing C.
I will now describe the operation of my device when
As indicated in FIG. 8, when the frame F is in its nor
it is provided with’ the frame F.
mal position, the red panes F-2 are concealed behin
two of the closed sides C-1 of the casing C.
'
When, in the above described rotation of the rotor S,
the lug F—9 is brought into contact ‘with the ?nger F-8,
It is to be understood that the parts are so dimensioned
and related that the frame F, suspended from the shaft
the frame S is oscillated with the rotor S, the red panes
F-2 registering with the panels A ‘of the rotor S, and are
F-S, about the bulb B, registers the panes F-Z with the
panes G, A and R of the rotor S.
brought to the open sides C—2 of the casing C. In this
The frame F has a ?nger F-S (FIGS. 6 and 8) project 25 way the panes F~2 will cause red lights to be displayed on
ing from the frame F to a point slightly spaced from the
line L and at the same time the second set of panels R
inner face ofthe rotor S. Suitably pivoted on the inner
will move to the open sides ‘C-2 of the casing C to cause
face of the rotor S there is a lug 1-1-9 (FIG. 13) adapted
red lights to be displayed on line L-l, thereby denying
to co-act with the ringer F~S on the frame F, to oscillate
permission for flow of vehicular tra?ic on both lines L
the frame F into its, position shown in broken lines in 30 and L-l, to permit free flow of pedestrian traffic.
FIG. 8. A contraction spring F-l? is disposed between
It is obvious that at the expiration of the Period for
V the rotor S and the lug F9 to yieldingly hold the lug F‘?
pedestrian tra?ic further rotation of the rotor S releases
in operative position. Suitably mounted on the casing
the frame F which is returned to normal position.
C there is a bracket F-ll having a stop ?nger F-1'2
As above mentioned, my device can be used to display
?ashing lights during certain period, as between midnight
(FIG. 8) adapted to engage the frame F to limit its degree
of oscillation by the lug F-9.
and 6:00 am. for instance.
1
This can be done by providing two circuits for the bulb
B, one of which supplies current to the magnets M-6, and
a multiple switch forsaid circuits, as shown diagram
will release the frame F which is returned to its normal 40 matically in FIG. 14. The multiple switch SW has points
position by a contraction spring F-I3 connecting the cas
AS and GS connected with a source of electricity SE
ing C and the frame F (FIG. 8).
'
and ground, respectively, and points BS and CS, and a
pivoted switch arm SA for connecting point AS with points
Having described the details of construction of my de
vice, I willnow describe its use and operation.
BS and CS, alternatively. The point BS has connected
to it one of the ‘wires 2 to the bulb ‘E, the other wire ‘2
It is to be understood that a suitable conduit 2. (FIGS.
from the bulb B being connected to point GS. The point
1~3) carries an electric circuit with a suitable control
It will be noted (FIGS. 8 and 13) that when the move
ment of the frame F has been arrested by the ?nger F42,
the lug 13-9, yielding on further rotation of the rotor S
switch from a suitable source of electricity to the bulb B
(FIG. 4), and a second electric circuit from a suitable
BS also has connected to it one of the wires M—7 to the
magnet M—6, the other wire M-7 being connected to the
point GS. The point CS has connected to it the wire
source of electricity to the electro-magnets M—6, the latter
circuit having a single suitable switch controlled by the 50 2—a to the wire 2 to the bulb B.
pre-set timer mechanism above mentioned.
As shown in FIG. 14, the wire M—7 from the point ES
When the bulb B is illuminated, it directs rays of light
to the magnet M—5 has a suitable timer switch TS, and
through the translucent panels G, A and R of the rotor S
the wire 2—a from the point CS to wire 2 to the bulb B
when they are disposed at the four open sides C-2 of the
has a suitable ?ashing mechanism FM.
casing C. Thus, as illustrated in FIG. 8, the two panels 55
It is to be understood, from FIG. 14, that, when the
G display green lights for the tra?ic line L and the two
switch arm SA is positioned to connect points AS and
panels R display red lights for the tra?ic line L—!;, the
BS, current will ?ow from the source of electricity SE
two panels A and the other two panels R being concealed
‘ through ?rst wire 2 to bulb B and throughsecond wire
by the four closed sides C-1 of the casing C, thereby in
2 to point GS to cause steady illumination of the bulb B.
dicating permission for ?ow of tra?ic on the line L and 60 When the switch arm SA is so positioned the current will
denying permission for ?ow of tra?‘icon line L-l.
?ow through ?rst wire M—7 having the timer switch TS
After expiration of the ‘proper interval for ?ow of traf?c
to the magnet M-6, and through the second wire M-7 to
on line L, the circuit to the magnets M—6 ismomen
point GS, to cause properly timed actuation of the mag
tarily closed by functioning of the switch controlled by
.
the timer mechanism.
65 net M-6.
When the switch arm SA is positioned to connect points
Closing the circuit to the magnets M—6, energizing the
AS and CS, current will flow from the source of elec
magnets M-6, ‘causes the magnets M—& to swing the
tricity SE through wire 2-a having the ?ashing mecha
operating arm M—3 counter-clockwise (FIG. 5) thereby
nism FM, to wire 2 to bulb B, to cause intermittent
causing the claws M—4, gripping the rotor S, to rotate
the rotor S counter-clockwise. The parts are so dimen 70 illumination of the bulb B.
It is obvious that when. the switch arm SA is in its
sioned and related that each actuation of the magnets
second position, the circuit to the magnet M~6 is open
M-6 causes the rod M~3 and its claws M—4 to move the
rotor S an octant of its circumference so that four panels
of the rotor S are moved away from the open sides C-2
so that the rotor S is at rest.
.
It is obvious that my device can be profded with means
to the closed sides C-1 and the other four'panels of the 75 adapted to open the circuit from the timer to the magnets
3,022,491
6
5
a hollow shaft, a frame rotatably suspended in said rotor
M-6 and close a manually controlled circuit thereto, for
by a shaft passing through said hollow shaft and carried
manual operation of the device.
by a ball-bearing on said top wall of said casing, and
It is to be understood that the casing C is suitably pro
having on its ends a pair of translucent, red panels, re
vided with all necessary means for fully protecting from
spectively, said panels registering with said panels of said
the weather the mechanism housed therein.
rotor, and a ?nger projecting from said frame, a lug so
Having described my invention, what I claim is:
pivoted on said rotor as to engage said ?nger to oscillate
1. In an apparatus for displaying tra?ic lights, the com
said frame when said rotor is rotated, a bracket so
bination of an octagonal casing having four closed sides
mounted on said casing and having a stop ?nger thereon,
and four open sides serving as windows, and a top wall
having a pair of arcuate slots; a rotor rotatably suspended 10 as to limit the degree of oscillation of said frame and to
cause said lug to become disengaged from said ?nger, and
from said top wall of said casing and having a top wall
a contraction spring on said bracket and said frame for
having therein eight slots symmetrically disposed about
returning said frame to normal position when said lug
the center of said top wall of said rotor; eight translucent,
is disengaged from said ?nger.
I
colored panels mounted in said rotor and comprising two
3. An apparatus, according to claim 1, in'which said
diametrical green panels, two diametrical amber panels, 15
lamp is electrically operated and provided wtih a ?rst
a ?rst pair of diametrical red panels and a second pair of
electric circuit for constant ?ow of electricity to said lamp
two diametrical red panels; a single lamp mounted cen
and a second electric circuit for intermittent flow of elec
trally of said casing and within said rotor; an operating
arm journaled on said top wall of said casing; a spring '
tricity to said lamp, for steady lighting and ?ashing light
having one end ?xed on said top wall of said casing and 20 ing, respectively, and said means to energize said electro
magnet is an electric circuit for intermittent flow of elec
its other end ?xed on said arm for biasing said arm into
tricity to said electro-magnet, and a multiple .switch is
normal position; at least one electro-magnet so mounted
provided for closing said ?rst circuit and opening said
on said top wall of said casing as to oscillate said arm
second circuit to said lamp, and closing said'circuit to
when energized; means adapted to intermittently energize
said electro-magnet; a pair of claws pivotally mounted on 25 said electro-magnet, when said switch is in one position,
and opening said ?rst circuit and closing said second
the ends of said arm and passed through said slots in said
circuit to said lamp, and opening said circuit to said
top wall of said casing, respectively, said claws entering
electro-magnet when said switch is in a second position.
said slots in the top wall of said rotor to engage and rotate
said rotor when said arm is oscillated by said electro
References Cited in the ?le of this patent
magnet, and leaving said slots in said top wall of said 30
UNITED STATES’ PATENTS
rotor when said spring returns said arm to normal position.
2. An apparatus, according to claim 1, in which said
Johnson _______________ __ May 6, 1930
1,757,050
rotor is suspended from said top wall of said casing by
2,107,930
Braun et a1 _____________ __ Feb. 8, 1938
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