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Патент USA US2108718

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Feb. A15, `1938.
J. w. LEE
2,108,718
STATION INDICATOR
Filed May l2, 1957
2 Sheets-Sheet l
«702m M566,
Feb. 15, 1938..
'
J_ w, LEE
Y
2,108,718
STATION INbICAToR
Filed May 12, 193'?
2 Sheets-Sheet 2l
s
A
"
|
ATTORN EYS
Patented Feb. 15, 1938
2,103,718
UNITED STATES PATENT OFFICE
2,108,718
STATION INDICATOR
John W. Lee, Wilkes-Barre, Pa.
Application May 12, 1937, Serial No. 142,265
2 Claims.
This invention relates to station indicators
and has for an object to provide a sign including
a traveling web displaying the names of stations
on subway cars, passenger cars, buses and other
passenger carrying vehicles and having novel
means for reversing the direction of travel of the
web when the vehicle reaches the end of its
route.
A further object is to provide an indicator
which can be full automatic or hand controlled
and the .automatic controlling can be by closing
(Cl. 40-53)
the line 3_8 of Figure l with parts removed and
showing the reversing switch controlled by the
web.
Figure 9 is a detail side elevation of the timing
switch controlled by movement oi a friction
roller riding upon the web above the upper web
supporting roller.
Figure l0 is a diagrammatic view showing the
electrical connections of the various switches,
motor, motor controlling relays, reversing re 10
lays, and reversing solenoid.
of a door, photoelectric cell or other means of
operated switch for actuating the sign by move
A further object is to provide a station indi
cator of the type described having novel means
ment of the door.
Figure 12 is a plan View of the web unrolled
for actuating the web to display the names of the
stations successively, each station name being
displayed prior to the .arrival of the conveyance
and showing the reversing switch contact carried
by the offset ends of the web.V
at the station.
so
A further
type which
simple and
pensive to
‘
object is to provide a device of this.
may be formed of a few strong
durable parts, which will be inex
manufacture, and which will not
easily get out of order.
after fully described and claimed, it being under
stood that various modiñcations may be resorted
to within the scope of the appended claims with
out departing from the spirit or sacrificing any
of the advantages of the invention.
-
In the accompanying drawings forming part of
this speciñcation,
of the stations one at a time.
.
characters of reference designate similar parts
in the various viewsflil and II designate super
posed. rollers upon which a web I2 isv wound.
The web is provided with legends I3 designating
places on a route, for example.
Brackets Iâ and I5 support the rollers at the 30
ends, one of the brackets being provided with
pins I8 which enter notches I'I in the ends of
the rollers to rotatably support the rollers. Each
pin is spring pressed by a helical spring I8 which
Figure l is a front elevation of a station indi
cator constructed in accordance with the inven
tion, with the housing removed to display the op
erating mechanism.
Figure 2 is a top plan view of the parts shown
40 in Figure 1.
For the purpose of clearness the housing for
the station indicator is not shown but it will be
understood that as usual in devices of this char
acter the housing will have an opening in the
front of sufficient magnitude to display the names
Referring now to the drawings in which like
»
With the above and other objects in view the
invention consists of certain novel detailsY of
construction and combinations of parts herein
'
ated thereby.
Figure 5 is a detail cross sectional view taken
on the line 5-5 of Figure 1, showing the shift
able clutch member of one of the clutches.
Figure 6 is a detail cross sectional view taken
on the line ß--â of Figure 1 showing the shift ring
and shift lever of one of the clutches.
is concealed in a housing I9 and is sleeved upon
a stem 2B which extends exteriorly of the hous
ing and is provided with a grip 2I by means of
which the pin may be withdrawn to permit re
moval of the respective roller from the bracket
I4.
Figure 3 is an end elevation looking toward the
left end of the device.
Figure 4 is a detail longitudinal sectional View
of the reversing solenoid and crank shaft oper
45
Figure 11 is a detail side elevation of a door
tripping the controlling switch.
‘
:Figure 7 is a longitudinal sectional view through
one of the clutches and contiguous end portion
of the associated web roller.
lFigure 8'is a' vertical sectional View taken on
55
'
The bracket I5, as best shown in Figures l
and 7, is provided Withbearings 22 which rotat
ably receive shafts 23 for driving both of the
rollers. The end of each shaft is enlarged as
shown at 24 and enters a recess 25 in the end
of the respective roller. Pins 26 project radially
from the enlarged end 24 and are received in a
groove 2l in the end of the roller to connect the
shaft and the roller for rotation as a unit.
For rotating the rollers an electric motor 28
is mounted on the bracket i5 by bolts 29, or other
connectors, as best shown in Figures l and 3.
The shaft of the motor is equipped with a worm
30 which meshes with a Worm gear 3i ñxed to
an intermediate portion of a shaft 32> which is
40
2,108,718
2
journaled near the ends in bearings 33 that pro
ject outwardly from the bracket |5. The shaft
is equipped at the ends with worm pinions 34 and
35 which mesh with worm gears 36 and 31 that
are loose on the shafts of the rollers I8 and ||
respectively.
The driving gears 36 and 31 are clutched to
the shafts of the roller by respective clutch mem
bers, best shown in Figures 1, 5 and 6. Each
clutch member comprises a grooved shift pulley
38 which is splined on the shaft 23 of the respec
tive roller and is provided with an annular series
of resilient fingers 39 which are adapted to en
gage in grooves 49 formed in a frusto-conical hub
member 4| that is integral with the respective
worm gear, as best shown in Figures l and '7.
rli‘he clutches are shifted alternately into clutch
ing position to reverse the direction of travel of
the web during the return journey of the con
20 veyance on its route.
For this purpose a shaft
42 is journaled in bearings 43 'that are mounted
on the bracket l5, as best shown in Figures l
and 3. A shipper 44 is fixed to the shaft and is
terminally equipped with forks 45 which enter
the grooves of the pulleys 38.
The shaft 42 is equipped with a crank 48; as
best shown in Figure 4. The crank is terminally
equipped with a projection 41 having an opening
48 of sufficient diameter to loosely receive a rod
49 which is equipped with collars 58 that alter
nately engage the head 41 when the rod is shifted
endwise and swing the crank to turn the shaft
42 to which the shipper 44 is fixed.
The rod 49 is shifted endwise by a solenoid,
which as later will be explained is automatically
controlled by switch devices carried by the web
l2. The solenoid, as best shown in Figure 4,
comprises two coils 5| and 52 disposed in align
ment on a cylinder 53 having terminal iianges
one of which is fixed to the bracket I5 by screws
54 or other connectors. The core 55 of the sole
noid carries the rod 49 and moves the same end
wise in accordance with which one of the coils
5| cr 52 is energized.
l
As shown in Figures 3 and l0, a switch 59 is
closed by the operator of the vehicle to start the
motor and pay oif the web from one of the rollers
and simultaneously wind up the web from the
other roller;
However, the closing of a door or
to some other movement within the vehicle may be
utilized to start the motor. The motor is auto
matically stopped after lapse of a suñ'icient time
period to permit the legend designating the next
stop to appear at the sight opening of the sta
- tion indicator. For this purpose a roller 51 is
mounted on bracket arms 58 that are hinged
as shown at 59 to stationary pivot members B9.
The bracket arms are of a sufficient length to
dispose the roller 51 to ride upon the web as it
passes over the top of the upper roller I8, as best
shown in Figure 3. The roller is driven by the
web and when being driven it turns a'cam disc
8| which is integral with one end of the roller.
As best shown in Figure 9, the cam disc is pro
vided with a pair of pivoted cam fingers 82 which,
during rotation of the disc, engage against re
spective stop pins 63 and are held thereby to pro
ject radially beyond the peripheral edge of the
disc. The pins are so located that when the disc
70 is rotated in either direction one of the pins will
hold its respective finger in operative position
while the other pin will permit its respective iin
ger to rock to inoperative position.
When in operative position the cam finger in
75
tercepts a leaf spring switch contact 64 and lifts
the contact out of engagement with a stationary
switch member 65 thereby breaking the circuit
to the motor through the motor controlling re
lay and stopping rotation of the web at the proper
point to display the desired legend.
The direction of travel of the web is automat
ically reversed to present the legends in proper
sequence during the return journey of the ve
hicle. To accomplish this switch contacts 66 and
61, of magnetic metal, are disposed on the web 10
adjacent to the ends thereof, as best shown in
Figures 8 and 12. A permanent horseshoe mag
net having legs 68, as best shown in Figure 2, is
secured by a stationary clamp plate 69 in posi
tion to underlie the path of travel of the contacts 15
66 and 61.~ As best shown in Figure 8, a pair of
aligned short switch contacts 1D and 1| are ar
ranged upon an insulating strip 12 which is se
cured to the permanent magnet by bolts 13. Also,
although not shown except diagrammatically in 20
Figure 10, a long switch contact 14 is disposed on
the insulating strip parallel with and spaced from
the switch contacts 10 and 1 I.
When the web is wound up upon the roller I!)
the contact 68 will bridge the long contact 14 and 25
short contact 10 and,V being of magnetic metal,
Will be attracted by the permanent horseshoe
magnet, to make a good electrical connection and
close a circuit to a respective reversing relay 15,
later described.
Conversely when the web is 30
wound up upon the roller l0 the switch contact
81 will bridge the long switch contact 14 and the
short switch contact 1| and close a circuit to a
Yrespective reversing relay 16.
These reversing
relays merely select which one of the coils on the 35
reversing solenoid will be energized.
'
By referring now to Figure 10 it will be seen
`that a motor controlling relay 11Y has one end of
its coil connected to the trip switch 84 by a cir
cuit wire 18`the other end of its coil being con 40
nected by a circuit wire -19`to the switch con
tact 85. The resilient switch contact 64 is con
nected by a wire 88’ to one of the current supply
wires 8| while the other current supply wire 82
is connected byla wirer83 to the trip switch 84 45
Which is connected by a Wire 85 to the time limit
Switch 56. Y
`VWhen the manually Y operated or automatic
switch 84 is closed, a circuit may be traced through
the wiresßjust described to energize the coil of 50
the motor relay and move'the armature 86 of the
relay against a Vpair of back contacts 81 one of
which is connected by circuit wires 88 and 89 to
the current supply wire 82. The other back con
tact is connected by circuit wires 5 and 6 to one
terminal of the motor 1 while the other terminal
of the motor isconnected by a circuit wire 8 to
the current supply wire 8|. Consequently when
the motor relay coil is energized the motor cir
cuit will be closed at the back contacts 81 through
the circuits just traced and the motor will start.
)When the timing switch finger 62 opens the cir
cuit through the relay coil by lifting the resilient
contact 84 the motor relay coil vwill be de-ener
gized and will break the motor circuit at the back
contact 81 to stop» rotation of the web at the prop
er place to display the desired legend.
The time limit switch 56 is a magnetically op
erated switch having a coil 90 one end of which
is connected by a wire 9| to thersupply wire 8|
and the otherI end of which is connected by a wire
92 to the wire 6 of the motor circuit. When the
motor circuit is open the magnetic Vtime switch is
55
60
65
70
open and keeps the motor circuit open and the
motor circuit cannot be closed again after an op 75
3
2,108,718
eration until the time limit switch closes any
where from ten second to two minute intervals
after each operation. The reason for this is that
if the indicator is operated by the closing of a door
and it is necessary to open the door again to let
As shown best in Figure 8 a bulb |64 may be
mounted in a suitable sprocket |05` that is at
tached to a stationary bracket |416 for illuminat
a passenger on or olî, the indicator cannot be
ing the displayed legend.
tripped within the time setting of the time limit
switch.
"I'o keep the relay 11 closed after the operator
10 has removed his finger from the trip switch 84,
there is a jumper connection 4 between the wire
'I8 and the armature 86 that energizes the coil on
the relay 11 as soon as the motor circuit is closed
at the back contacts 81.
15
'I'he reversing relay 1B has one end of its coil
connected by a circuit wire 93 to the short switch
contact 1| on the horseshoe permanent magnet.
The other end of its coil is connected by wires 94
and 95 to the before mentioned wire 89. The re
20 lay is provided with a pair of back contacts 96
one of which is connected by a circuit wire 91 to
the coil 5| of the reversing solenoid.
is connected to the Wire 95.
The other
When the switch contact 61 on the web bridges
the long stationary contact 14 and the short sta
tionary contact 1|, the reversing relay 16 is ener
gized to close a circuit at the back contacts 96
through the reversing solenoid coil 5| and re
verse the direction of travel of the web as previ
30
Cs: Ul
tilt the mercury switch to circuit closing position
as will be understood.
Since the operation of the device has been de
scribed as the description of the parts progressed,
it is thought that the invention will be fully un
derstood without further explanation.
10
What is claimed is:
1. An electrically controlled station indicator
comprising a web! displaying the names of sta
tions, rollers upon which the ends of the web are
wound, brackets supporting the rollers, respec
said relay is connected, a switch on the last named
circuit opened by said cam projection to de-ener
gize the relay and open the motor circuit when
the web has advanced each station naine into
ously described.
View after said manually operable switch is
To again reverse travel of the web when the
vehicle resu-mes its outbound journey the contact
66 on the web will be in position to bridge the long
contact 14 and short contact 10 of the horseshoe
cuit preventing closing of the motor circuit until
lapse of a predetermined time period after each
magnet and energize the reversing relay 15, which
has back contacts 98 electrically connected in cir
cuit with the coil 52 of the reversing solenoid.
Consequently when the relay 15 is energized the
coil 52 of the reversing solenoid will be energized
40 to reverse direction of travel of the web. The long
contact 14 of the permanent horseshoe magnet
is connected by a circuit wire 99 with the circuit
wire 83 of the motor and through this long switch
contact both of the short switch contacts 19 and
45 1| are supplied with current and selectively
bridged by the web switch contacts 56 and 61.
In lieu of the manually operated switch 84 a
conventional mercury switch |09, shown irl-Fig
ure 11, may be operated by opening or closing
movement of the vehicle door |9| and to this end
the switch may be carried on a centrally pivoted
bracket arm |02 which is struck by a pin |03 to
15
tive clutches connected to the rollers, a shipper
for alternately clutching one clutch and de
clutching the other clutch, an electric motor
geared to said clutches for driving the rollers, a
circuit for the motor, a switch in said circuit, a
relay controlling said circuit, means for holding
the relay circuit closed when said switch is open,
a timing roller frictionally engaging the web» above
one of the web supporting rollers and having yield
ing cam projections, a circuit in which the coil of
closed, and a time limit switch in the motor cir
actuation.
i
2. An electrically operated station indicator
comprising superposed rollers, a web carried by
the rollers and displaying station names, an elec~
tric motor, means connected to the motor for
driving the rollers alternately, means including
clutches on the rollers for de-clutching one roller 40
and simultaneously clutching the other roller to
reverse the direction of travel of the web, a so~
lenoid having two coils, a core for the solenoid
connected to said reversing means, respective
circuits for said coils, relays having back contacts
in said circuits, circuits including the coils of said
relays, and switches in the last named circuits
closed by the web selectively when at or near the
end of its travel in either direction for energizing
the relay coils selectively to selectively close the '
circuits to the coils of said solenoid.
JOHN W. LEE.
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