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Патент USA US2113324

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April 5, 193-8. >
2,1 13,324
J. HUTCHINSON'
REVERSIBLE CHANGEABLE EXHIBITOR
ggginal Filed Dec. 15,1932
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April 5, 1938.
J. HUTCHINSON
2,113,324
REVERSIBLE CHANGEABLE EXHIBITOR
Original Filed Dec. 15, 1932
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April '5, 1938.
2,113,324
J. HUTCHINSON
REVERSIBLE CHANGEABLE EXHIBITOR
Original Filed Dec. 15, 1952, -7 Sheets-Sheet 3
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REVERSIBLE CHANGEABLB EXHIBITOR
Original Filed Dec. 15, 1932
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REVERSIBLE CHANGEABLE EXHIBITOR
Original Filed Dec. 15, 1952
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INVEN TOR.
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April 5, 193-8.
J. HEJTCHINSON
2,113,324
REVERSIBLE CHANGEABLE EXHIBITOR
Original Filed Dec. 15, 1932
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INVENTOR
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ATTORNEYS.
Patented Apr. 5', 1938
2,113,324
UNITED STATES
PATENT OFFICE
2,113,324
REVERSIBLE CHANGE-ABLE EXHIBITOR
Job Hutchinson, Great Neck, N. Y.
Application December 15, 1932, Serial No. 647,477
Renewed August 31, 1937
6 Claims.
This invention relates to electrically operated
changeable exhibitors for announcing informa
tion, and more particularly to devices of the gen
eral type disclosed in my co-pending applica
5 tion Serial No. 649,623, ?led December 30, 1932,
as a division of prior application Serial No.
590,484, ?led February 2, 19312.
~
While in said prior application I have shown
and described a display unit in which the mov
10 able display element, carrying a series of charac
ters, is driven continuously by a rotary motor, I
propose, in the present case, to operate the dis
play element step-by-step, one character at a
time, by means of an improved pawl and ratchet
15 device.
Also, while in said prior application, there is
required a number of control wires equal to the
number of characters to be displayed, I am en
abled, by the present invention, to display any
20 desired number of characters by means of. but
two control wires.
Furthermore, while in said prior application,
I have shown mechanism by which the display
element is driven always in the same direction
95 until the end of the series of characters is
reached, and is then automatically reversed, I
have now devised means by which the direction
in which the display element is driven can be se
lected at will from the control station.
30
With the above improvements in mind, the
present invention comprises a display element,
pawl and ratchet mechanism for driving it, a
reversible remote control device for operating
said pawl and ratchet mechanism, and means
35 governed by the direction of movement of said
remote control device for causing said pawl and
ratchet mechanism to drive said display element
in one direction or the other, as desired.
In order that the invention may be readily
40 understood, reference is had to the accompany
ing drawings, forming part of this speci?cation,
and in Which:
Fig. 1 is a side elevation of my improved dis
play mechanism or changeable exhibitor, parts
45 being in section;
Fig. 2 is a plan view thereof;
Fig. 3 is a horizontal section substantially on
the line 3-3 of Fig. 1;
50
Fig. 4 is a front elevation of the same;
Fig. 5 is a transverse section substantially on
the line 5—5 of Fig. 1, looking in the direction
of the arrows;
Fig. 6 is a transverse section on the line 6—-6
55
of Fig. 1, looking in the direction of the arrows;
Fig. '7 is an elementary diagram of circuit;
(Cl. 17 7—328)
Fig. 8 is a fragmentary plan view of a series of
control units or remote control devices which I
employ for operating a similar series of display
mechanisms;
Fig. 9 is an end elevation of the same, parts 5
being in section;
.
r
Fig. 10 is a front elevation of the series of re
mote control devices shown in Fig. 8, Fig. 10,
however, illustrating a group of two such series;
Fig. 11 is a transverse section substantially on
0
the line Il-—l| of Fig. 10, looking in the direc
tion of the arrows; and
Fig. 12 is a complete diagram showing four
control units operatively connected to four
changeable exhibitors or display units.
.
.15
Referring to the drawings in detail, and more
particularly ?rst to Figures 1 to 6 thereof, my
improved display mechanism comprises a frame
having top and bottom plates l and 2 braced by
spacing bolts 3, a back plate 4 and a front plate I
5. This front plate 5 is provided with a display
opening or window 6 behind which may be dis
posed a glass or other transparent panel 1, which
may be plain or of any desired color.
Journaled between the top and bottom plates l 25
and 2 are a pair of reels 8 and 9, to the shafts
of which are secured gears I0 and H intercon-_
nected by means of a gear I2 secured to a shaft
13 also journaled in the top and bottom plates.
Secured to the reels 8 and 9 are the ends of a 30
web or band l5 of suitable ?exible and preferably
opaque material, this web being adapted to be
wound on and unwound from the reels. At each
side of the window opening 6 is a guide roller 16,
and the web 15, in traveling from one of the 35
reels to the other, passes around these guide roll
ers in close proximity to the display opening.
This web I5 constitutes the display element and
carries a series of individual characters, such as
letters or numerals which are preferably formed 40
by translucent portions of the otherwise opaque
web. Each of these characters is of such size as
to substantially ?ll the display opening 6, as illus
trated, for example, by the numeral “3”, shown
in Fig. 4. It will be understood that one of the 45
reels, such as 9, is connected with its shaft
through a spiral or other spring l4 in order to
maintain the tension on the web.
Behind the portion of the web between the
guide rollers l6, and back of the side opening 6 50
is a suitable lamp I‘! behind which again is dis
posed a re?ector I8. All of the parts so far de
scribed are substantially the same as those illus
trated and described in my prior co-pending
application, above identi?ed. .
55
2
2,113,324
Mounted upon the top plate I near each end
thereof are solenoids l9 and 20, between and
into which extends a shaft 2| constituting the
plunger of the solenoids, this shaft being sup
ported in bearings 2|a. To the shaft 2| are
rigidly secured a pair of spaced bevel pinions 22
and 23 each of which is adapted to mesh with
a bevel gear 24 secured to the upper end of the
shaft I3. It will be understood that the pinions
10 22 and 23 are spaced apart a distance slightly
greater than the diameter of the gear 24, so that
when one of these pinions is in engagement with
the gear 24, the other is out of engagement there
with. Owing to the fact that the pinions 22 and
15 23 engage the gear 24 at opposite points thereof,
the arrangement constitutes a reversing gear.
Assuming the shaft 2| to turn always in the same
direction, it will be obvious that the gear 24,
and with it the reels 8 and 9, are driven in one
20 direction or the other in accordance with which
of the pinions 22 or 23 is in engagement. It will
be further obvious that the solenoid |9 when
energized will shift the shaft 2| to the left so
as to bring the pinion 23 into engagement, while
25 the solenoid 20 when energized, will shift the
shaft 2| to the right, thus bringing the pinion 22
into engagement.
'
In order to rotate the shaft 2|, and always in
the same direction, I provide improved step-by
30 step' mechanism comprising a ratchet wheel 25
and a pawl 26. By reference to Fig. 5, it will be
seen that the pawl 26 has a hook on its end which
engages the teeth of the ratchet wheel 25, and
that the pawl is pivotally mounted at 21 upon
35 an armature 28 which is itself pivotally mounted
at 29 to a ?xed support carried by posts 36. Rigid
with the armature 28 is a second pawl 3|, and
the pivoted pawl 26 is urged toward the ratchet
wheel by means of a spring 32 extending between
40 the two pawls.
Positioned beneath the armature 28 is an elec
tromagnet 33 having pole pieces so designed that
when energized they attract the armature 28,
drawing it down from full line to dotted line posi
45 tion, as shown in Fig. 5. At each such actuation
of the armature the pawl 26 pulls the ratchet
wheel 25 around a distance equal to the space
between two teeth, that is to say, as shown in
Fig. 5, one-sixth of a revolution. At the end of
50 the stroke of pawl 26, the pawl 3| has moved into
the dotted line position and serves as a stop to
limit the movement of the ratchet Wheel 25,
thus assuring that it is moved accurately the
proper distance, and no further.
Housed at the rear end of the display unit and
55
supported on the rear plate 4 thereof are a pair
of relays 34 and 35 (see Figs. 1 and 6). The re
60
65
70
15
lay 34 has an armature 36 pivoted at 38 and
carrying a switch blade 48 adapted to engage
?xed contacts 42 and 44. It will be noted that
owing to the shape of the blade 40, when it is
swung toward the contacts 42 and 44 it engages
the contact 42 ?rst and then the contact 44 later.
This is essential to the operation of the mecha
nism, as will hereinafter more fully appear.
Similarly, the relay 35 has an armature 3'| piv
oted at 39 and carrying a switch blade 4| which
engages ?xed contacts 43 and 45, the switch blade
4| being shaped so as to engage the'contact 43
?rst.
Referring now to Fig. "I, the manner in which
the various parts heretofore described are elec
trically connected will be clear. The contact
42 is connected by wire 46 with one side of the
solenoid |9 while the contact 43 is connected by
wire 41 with one side of the solenoid 20, the other
side of these two solenoids being connected by a
common wire 49 to a wire 50 extending to one
supply lead. The two contacts 44 and 45 are
both connected by a wire 48 to one side of the
magnet 33, the other side of which is connected
to the wire 50.
In order to complete the circuit to the sole
noids l9 and 20 and the magnet 33, current is
supplied from the other supply lead over wire
5| to the armatures 36 and 31 of the relays 34
and 35, so that when the switch blades carried by
these armatures engage the contacts 42 to 45 the
various magnets and solenoids will be energized.
From an inspection of Fig. 7, in connection 15
with Figs. 1 and 5, it will be seen that whenever
the relay 34 is energized it will attract its arma
ture, and the switch blade 40, during its initial
movement will engage the contact 42. This will
energize solenoid l9 thus pulling the shaft 2| 20
so as to bring the pinion 23 into engagement with
the gear 24. Then, during its subsequent move
ment, the switch blade 40 will engage contact 44,
thereby energizing the power magnet 33 and
causing the pawl and ratchet mechanism shown 25
in Fig. 5 to make a stroke, thus rotating the shaft
2| and the reels 8 and 9 one step and moving the
web a distance corresponding to one character.
Similarly, when the magnet 35 is energized,
the switch blade 4| thereof will ?rst engage the 30
contact 43 thus energizing the solenoid 20, shift
ing the shaft 2| to the right and bringing the
pinion 22 into engagement with the gear 24. By
its further movement the switch blade 4| engages
the‘ contact 45 thus energizing the power magnet 35
33 and similarly causing the pawl and ratchet
mechanism to make a stroke which moves the
web a distance equal to the width of one char
acter.
.
Thus, the reels are rotated in one direction or 40
the other in accordance withwhich of the two
relays 34 or 35 is energized.
As above stated, I propose to move the web
from one character to the next at each stroke
of the pawl and ratchet mechanism. However, 45
it will be observed that as the web is wound upon
the reel which is ?xed to its shaft, the eifective
diameter of’ this reel progressively increases.
Thus, a given angular movement, at one stage
of the operation, would not result in the same 50
linear displacement of the web as it would at an
other stage. Therefore, to compensate for this
varying effective diameter of the reel, and in
order to insure that successive strokes of the pawl
and ratchet mechanism result in bringing succes 55
sive characters accurately into registry with the
display opening, regardless of the position of the
characters in the series, I progressively vary the
spacing of the characters from one end of the
series to the other. Thus, in the case of the 60
alphabet, for example, the distance between “A”
and “B” would be slightly different from the dis
tance between “Y"’ and “Z”, owing to the fact
that when the web is suiiiciently wound upon the
reel to display the last characters, the diameter 65
of the reel has increased so' that the same angu
lar movement produces a different linear dis
placement of the web. By this simple expedient
of progressively increasing the spacing between
the characters from one end of the series to the 70
other, I am enabled to completely compensate
for the variation in effective diameter of the
reel, and to bring about the result that successive
equal angular movements of the reel bring suc
cessive characters centrally into accurate regis
75
2,113,321::
try with the display opening regardless of the
position of the characters in the series.
In order to energize the relays 34 and 35, I
provide a pair of circuit closers constituting part
of the remote control device. In Fig. 7, these cir
cuit closers are shown as comprising a central
contact ?nger 54, connected with one side of the
supply line by means of a wire 53, and a pair of
contacts 55, 56, disposed one on each side of the
10 contact ?nger 54, and connected with one vside
of the respective relays 35 and 34 by wires 51
and 58. The other side of these relays is, of
course, connected by wire 5| to the other supply
lead. A switch 52 is provided for controlling the
15 lamp I l, as shown.
As in my prior co-pending application, above
identi?ed, I propose to arrange a plurality of dis
play units such as illustrated in Figs. 1, 2 and 3
in groups, the units being disposed in a number
20 of horizontal rows so as to provide lines of read
ing matter. In Fig. 12, I have illustrated a
group of four such units operatively connected
with a corresponding group of four remote con
trol devices.
25
In Figs. 8 to 11, I have shown how groups of
these control devices may be arranged in bank
formation comprising a plurality of horizontal
rows corresponding with the horizontal rows of
display units.
30
Referring more particularly to Figs. 8 and 9,
essary to so construct the remote control device
that it is impossible to continue turning it in 15
any one direction beyond the end of the series
of characters. By reference to Figs. 10and 11,
also, it will be seen that the control wheels may
be conveniently mounted in a plurality of rows
or banks, the wheels of the diiferent banks be 20
ing mounted on different shafts, 59a, 59*’, etc.
Referring’again to Fig. 10, it will be seen that
although there are three contact devices, 54, 55
and 56, for each unit, it is necessary to employ
only two control wires extending from the re 25
mote control device to the display unit, namely,
the wires 51 and 58. In addition to these, there
are only the power supply wires and common re
units, there being one switch for each row.
The free
end of contact ?nger 54 is arranged to be en
gaged by the teeth 59 of a toothed wheel hav
ing secured thereto an indicator ring or rim 60
which bears the series of letters, numbers or
40 other characters which it is desired to display.
The teeth 59 of the control device are accessible
through openings 63 in the front wall 64 of the
casing in which the control devices are mounted,
so that the control wheels may be turned in
45 either direction by the operator by applying his
?nger to the exposed teeth. As the control wheel
is rotated, it will be understood that the contact
?nger 54 is deflected from its central position
and snaps from tooth to tooth. When the wheel
50 is rotated in one direction the contact ?nger 54
is de?ected into engagement with the contact 55,
70
played through the display opening 6, since the
web is of de?nite length and can only travel a
certain limited distance. It is, therefore, nec
of the ?nger 54, all of the contacts being sup
35 ported on an insulating frame 54*‘.
65
adapted to engage a ?xed abutment 6| carried 5
by the casing, so as to limit the rotation of the
wheels to a single revolution in either direction.
This is necessary in order to assure that the
characters displayed at the indicator windows‘
65 will always agree with the characters dis 10
contacts 55 and 56 arranged one on each side
comprises the contact ?nger 24 and the pair of
60
II], II and I2 is such that this results in moving
the display web 15 from “A” to “E”.
By reference to Fig. 11, it will be seen that I
provide each of the wheels 60 with a stop pin 62
turn, which latter extend to all of the units of the
system in parallel and may be wired on the back 30
of the display board, as described in my prior co
pending application. Each switch 52 controls all
of the lamps I‘! in one horizontal row of display
it will be seen that each remote control device
55
3
while when it is rotated in the reverse direction
the contact ?nger 54 is caused to engage the con
tact 56. Thus, as each tooth 59 passes the con
tact ?nger 54, a current impulse is sent through
either the relay 34 or the relay 35 in accordance
with the direction of rotation of the control
wheel. The letters or characters on the indi
cator ring 60 are arranged to be displayed one
at a time through windows 65 in the wall 64 of
the casing, as clearly shown in Fig. 9, and it will
be understood that the spacing of the characters
on the ring 6|] corresponds with the spacing of
the teeth 59, that is to say, there is one charac
ter for each tooth.
Consequently, in rotating one of the control
wheels through a sufficient angle to change the
character appearing at the window 65 from “A”
to “E”, four teeth are caused to snap past the
contact ?nger 54, and the circuit to one of the
relays is closed momentarily four times.
This
causes the pawl and ratchet mechanism, shown
in Fig. 5, to turn the shaft 2| four steps, and, as
75 above explained, the ratio of the gearing 22, 24,
From the foregoing, it will be clear that each 35
relay 34, 35, when energized serves to ?rst select
the direction in which the web l5 wil1 be driven
by means of the solenoids l9 and 20 and pinions
22 and 23, and then to turn the shaft 2| one
step, thus moving the web a distance correspond 40
ing to one character. It will be further under
stood that the web may thus be driven step-by
step at any time in either direction desired, in
accordance with whether the remote control
wheel is turned by the operator in one direction 45
or the other. Thus, for example, the operator
may, by turning the control wheel in one direc—
tion, advance the web from the letter “A” to the
letter “R”, and then, by turning the control
wheel in the opposite direction he may cause the 50
web to be driven reversely back (say to the let
ter “O”) . Thus, it is possible to change the dis
play device at will and directly from one char
acter to any other character whatsoever, re
gardless of the relative position of the two char 55
acters in the series.
What I claim is:
1. An electrically operated changeable exhib
itor unit comprising a relatively long narrow
frame having a display opening at the front end 60
thereof, reels mounted one behind the other in
said frame, a ?exible display element carried by
said reels and adapted to pass in front of said
display opening, a drive shaft and connected gear
ing for driving said reels, a pair of electromagnets 65
disposed one near each end of said frame for
shifting said drive shaft longitudinally for chang
ing the direction in which it drives said reels, said
drive shaft extending between said electromag
nets, pawl and ratchet mechanism for causing 70
rotation of said drive shaft, and electrically op
erated means located in said frame behind said
reels for actuating said pawl and ratchet mech
amsm.
2. An‘ electrically operated changeable ex 75
4
2:1 18,324
hibitor comprising a relatively long narrow frame
having a display opening at its front end, reels
mounted in ‘said frame, a ?exible display element
carried by said reels and positioned to pass in_
front of said display opening, a drive shaft dis
gizing said electromagnetically driven means, said
posed longitudinally of said frame, reversing
gearing interposed between said shaft and reels
means including instrumentalities for insuring
the actuation of said shiftable means in advance
of the energization of said electromagnetically
for driving the latter in either direction, the di
rection of drive being determined by the longi
10 tudinal position of said shaft, means for shifting
said shaft axially to select the direction of drive,
and electromagnetic means located in said frame
behind said reels for rotating said drive shaft and
for controlling said shifting means.
3. A changeable exhibitor comprising a mov
able display element bearing a series of char
acters, a remote control device including an indi
cator element bearing a similar series of char
acters and movable in either direction, power
means, movable in one direction only, for oper
ating said display element, shiftable means
whereby said power means may be caused to
drive said display element in either direction,
and means operated by the reversal of movement
25 of said indicator element for both actuating said
shiftable means, and bringing said power means
into operation, said means including mechanism
for insuring the actuation of said shiftable
30
1y driven means may drive said display element
in either direction, means operated by the re
versal of movement of said indicator element for
both actuating said shiftable means and ener
driven means.
5. A changeable exhibitor comprising a mov- _
able display element bearing a series of char
acters, a remote control device including an indi
cator element bearing a similar series of char
actersand movable in either direction, a power
shaft, 2. driving magnet for operating said shaft .
in one direction only, shiftable gearing whereby
said power shaft may drive said display element
in either direction, magnetic means for shifting
said gearing, and means actuated by the re—
versal of movement of said indicator element for 20
energizing both the magnetic gear shifting means
and the driving magnet, said means including
relay means insuring the energization of the
gear shifting magnetic means prior to the ener
gization of said driving magnet.
6. A changeable exhibitor comprising a mov
able display element, a remote control device
therefor, a driving magnet for operating said
means in advance of bringing said power means
display element, shiftable gearing whereby said
into operation.
driving magnet may drive said display element in
either direction, a magnet for shifting said gear
ing, parallel circuits for energizing said driving
magnet and shifting magnet respectively, and a
single means operated by said remote control de
vice for ?rst closing the circuit of said shifting
magnet and subsequently closing the circuit of
said driving magnet.
4. A changeable exhibitor comprising a mov
able display element bearing a series of char
acters, a remote control device including an in
dicator element bearing a similar series of char
acters and movable in either direction, electro
magnetically driven means, movable in one di
rection only, for operating said display element,
shiftable means whereby said electromagnetical
JOB HUTCHINSON.
25
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