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Патент USA US2110813

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D. B‘ O’KELLY
PORTABLE DE SK
Filed Dec. 31, 1936'
3 Sheets-Sheet l ‘
29/?
2a
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35 35 43
22
51,4 37
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/ ATTORNEY.
, 1%.
D. B. O’KELLY
291109813
PORTABLE DESK
‘Filed Dec._ 31, 1936
F975
3 meets-Sheet 3
Patented Mar. 8, 1938
2,110,813
UNITED STATES PATENT OFFICE.
2,110,813
PORTABLE. DESK
David Barron O’Kelly, Bishopville, S. 0‘.
Application December 31, 1936, Serial No. 118,496
10 Claims.
My improvements relate to portable desks for
(01. 40-52)
or similar performer in the playing of music in
use by public speakers, readers, lecturers, actors,
dicated on a movably mounted scroll or similar
etc., and the objects of my invention are, ?rst,
member.
I attain these objects by the mechanism illus
trated in the accompanying drawings, in which:—
Figure l is a plan view of my portable desk and
disclosing a portion of it broken away to more
fully disclose the scroll and rolls; Fig. 2, a side
View of the portable desk with its cover housing
broken away substantially on the line Z—2, Fig. 1, 10
to more clearly disclose the mechanism therein;
to provide a portable desk in which an address
5-;or speech may be placed in the form of a scroll
adapted to be unrolled and moved to progressively
reveal the address or speech to the speaker’s or
user’s view during the delivery of the address or
speech; second, to provide a speaker’s desk with
10 ‘power driven mechanism for feeding a scroll con
taining the speaker’s words thereon past the vi
sion of the speaker; third, to provide a speaker’s
desk adapted for portable use and automatically
and mechanically operated; fourth, to provide a
15'; portable desk for speakers or musicians or similar
uses and adapted to be operated either by power
driven means or by manually operated means;
?fth, to provide a speaker’s desk equipped with an
automatically operated scroll together with an
20‘ automatically operated clock mechanism for reg
ulating the address of the speaker or user to a
predetermined time; sixth, to provide a speaker’s
desk having automatically operated scroll means
with means for causing the scroll means to pause
2'51for a predetermined length of time while being
read by the speaker; seventh, to provide a speak
er’s desk having a scroll with power driving means
equipped with a Geneva wheel mechanism to pro
vide intermittent operation of the scroll; eighth,
30". to provide a speaker’s desk having a roller sup
ported scroll with power driving means equipped
with a free wheeling mechanism to enable rolls
and the scroll to be manually operated as de
sired; ninth, to provide a speaker’s desk having
351a power driven scroll with means for changing
the speed of the scroll; tenth, to provide a speak
er’s desk having a scroll with a driving means
utilizing friction or gear drive mechanism;
eleventh, to provide a speaker’s desk with an ad
Iltl justably mounted lens member for magnifying a
scroll from'which the words of the speaker or
user are being read; twelfth, to provide a speak
er’s desk having a power driven scroll and a
clock mechanism with a switch mechanism for
4:5 controlling the operation of the clock mechanism
and power driven scroll; thirteenth, to provide a
speaker’s desk having a power driven scroll
Fig. 3, a partial sectional view of the portable
desk taken on the line 3—3, Fig. 2; Fig. 4, a par
tial sectional View of the portable desk taken on
the line 4-4, Fig. 3; Fig. 5, a partial sectional 15
view of the portable desk taken on the line 5—5,
Fig. 3; Fig. 6, a front view of the portable desk
drawn to a smaller scale than that of Figs. 1
and 2; and Fig. 7, a partial sectional view of the
portable desk taken on the line 1-4, Fig. 3.
Similar numerals refer to similar parts
throughout the several views.
My invention incorporates improvements on _
the portable desk disclosed in my U. S. Patent
1,636,783, issued July 26, 1927, and the mecha
nism disclosed in said U. S. patent has been im
proved by the application of automatic and man
ual control together with power driven mecha
nism to provide a portable automatic speaker’s
desk.
30
My portable desk in this present application is
designed to- meet the needs of the every day user
of reading matters such as radio announcers,
casting directors, actors, readers and lecturers
such as preachers, teachers, judges, lawyers, doc- 35
tors, business executives, and in fact anyone uti
lizing the compilations of de?nite data which are
to be used accurately and dispensed with speed
and precision in a public address or stated mat
ters.
40
My portable desk provides a mechanism which
is a necessary adjunct in practically all walks of
commercial life and in which there are many uses
therefor.
.
It is also adapted to be utilized advantageously
in the music world to hold and dispense the music
as the musician desires.
means mounted on a base member with a cover
My portable desk comprises the base or floor
housing pivotally mounted on the base member
50 and adapted to enclose and protect the power
driven scroll means; fourteenth, to provide a
speaker’s desk with a lens magnifying member
positioned to best accommodate the correct opti
cal vision of the speaker; and ?fteenth, to provide
55, a speaker’s desk adapted for use by a musician
member I having an upper land or portion 2 for
supporting the driving, control and scroll sup
port mechanism of my invention, said driving,
control and scroll support mechanism being en
closed by the covering or housing 3 which is se~
cured to the land 2 of the base member I by a
hinge mechanism 4 provided with the ?anges 5 55
2
2,110,813
secured to the cover 3 by the rivets 6, the hinge
mechanism 4 being further provided with the
?anges '1' secured to the land 2 by the screws 8.
The cover 3 is preferably constructed of mate
01 rial which will provide light weight and economy
in manufacture and the lower edge portion of the
cover 3 may be folded as at 8 to provide a bead
therearound and to reinforce the open side of
the cover 3 as well as to provide for proper
sti?ening characteristics of the portion which
contacts the land 2.
ri‘he cover 3 is provided with the handle H]
which forms a portion of the lock mechanism
H which is of conventional key operation and
construction and is adapted to lock the cover
housing 3 and the base member 2 together.
The cover 3 is provided with a suitable open
ing through which extends the clock mechanism
42 which is secured to the cover 3 by a plurality
of screws IS. The clock mechanism i2 is an
electrical timing clock which enables the user
or speaker to regulate his talk or reading to a
given time in accordance with the given number
of minutes as the case may be even to split
seconds.
The clock mechanism 22 is provided with a
land or face portion l4 through which the time
recordings of the clock mechanism 12 are visible
to the speaker at all times.
The cover 3 is also provided. with the opening
it through which extends the lens l6 which is a
magnifying lens and which is provided with the
correct curvature to enable the user to» satis
factorily observe the reading matter on the
scrolls, paper or sheet H which is tightly
stretched and extends under the lens l6 which
?ts approximately at an angle of 45° to accom
modate the correct optical vision of the speaker
when the portable desk is suitably supported on
40 a table, stand or similar member in front of the
speaker. Also the clock mechanism is inclined
to more readily accommodate its observance by
the vision of the speaker.
1
The lens it is supported by having its end
portions entered within the hollow extension por
tions it which face inwardly and are suitably se
cured on the plates or bracket members 19 which
are secured to the side walls of the cover 3 by
the scroll in an idler capacity only, whereas sub
stantially the total scroll is rolled or wound in
itially upon the roller 23 and is then fed or
actuated from off of the roller 23 on to the mas
ter roller 25, the ?ange ‘£39 thus being necessarily
larger to extend for the full thickness of the
total scroll on the rollers ‘23 and 26, whereas
only a single sheet or thickness of the scroll en
gages and passes by the roller 24.
One of the flanges 29 of the roller 23 is pro
25
of one of the ?anges 29 as disclosed in Fig. 5.
The resilient member or spring 43 surrounds
the shaft 3‘! and extends between an inside sur
face of the bushing 3i and the collar 31A to
exert a pressure on the extended portion of 3| so
that the roller 23 is always urged toward a tight 30
engagement with the bushing 44 which is se
cured to the flange 45 of the bracket 46 by
riveting as indicated at 47.
A stud 48 has a bearing in the bore of the bush
ing 44. The bracket 46 is secured to the base 35
member l by screws 49 and the bracket 34 is se
cured to the. base member 8 by the screws 50.
The handle or knob 56 is mounted on the shaft
37 and is secured thereto by the pin 52.
The bushing 53 is ?xedly secured to the ?ange 40
36 by riveting as at 53A, or by similar means,
and forms a bearing for the shaft 31, the shaft
31 normally being held out of engagement with
the extension portion 413 by the spring 43, the
shaft 37 being adapted to be slidably moved to 45
engage the extension portion is when it is de
sired to rotate the roller 23 manually by the
with a handle or knob portion 2|, the screws 20
handle or knob 5!.
Thus my portable desk may be operated man
ually when the driving means, such as the elec
extending through the slots 22 in each of the
plates or brackets it to be secured by nut mem
tric motor assembly A, is inoperative, or if the
operator desires to advance, retard or retract the
means of screws or bolts 29 which are provided
bers 5-33 in a conventional manner.
Thus the plates or brackets 18 are adjustably
mounted to permit adjusting the magnifying lens
it to various positions to permit‘ the reading mat
ter on the scroll ii to be best observed by the
speaker.
The scroll, sheet or paper H is adapted to be
printed with the message or speech to be de
livered by the speaker or user, and is then wound
on the roller or cylindrical member 23 with one
end of the scroll, sheet or paper extending over
the upper roller 24, and then extending as in
dicated by the portion 25 to the master roller
28 to which it is suitably secured to permit its
being rolled thereon, each of the rollers 23 and
25 being provided with the tubular portions 21
which are closed at their ends by the bushings
which are provided‘ at each end with a flange
2% to retain the rolled sheets on the rollers.
It is to be noted that the rollers 23 and 26
are provided with the bushing members 28 which
have a larger ?ange 29 than the bushing mem
bers of the roller 25, as the roller 24 engages
10
vided with an extension portion 3| which has
a bearing in the bushing 32 which is secured
to the flange 33 of the bracket 3% as by riveting
as indicated at 35, Fig. 5.
The bracket 34 is further provided with a 15
?ange 36 through which extends the shaft 31
which extends into the bore 38 of the extension
portion 3i, the shaft 3? being provided with a
slot 39 which engages the extension portion 40
of the stud iii which ?ts within the bore 38 of 20
the extension portion 33, said bore having a size
sumcient to receive therein the shaft 31, the stud
4! being provided with an extension portion 42
which is secured by being pressed into a bore
50
reading matter, thus permitting the scroll and
rollers to be moved forward or backward at the
will of the operator at any time irrespective of 55
the operation of the motor or driving mechanism
hereinafter described.
In a similar way the roller 23 is rotatably sup
ported on a bracket 34 located, however, at the
opposite side of the portable desk assembly due 60
to the positioning of the driving mechanism for
the roller assembly adjacent the other end of the
roller 26 at the same side of the portable desk
assembly to which the knob or handle 5! is lo
65
cated by the roller 23.
The roller is is supported at its end opposite
to one of the brackets 3% by the stud 55 which is
provided with an extension portion 58 which
enters a bore of one of the ?anges 29 of one of the
bushings 28 and is rotatably mounted therein,
the stud 55 being provided with an extension por
tion 56A which enters a slot or groove in a head
portion of the shaft 5‘! which is rotatably sup
ported at its inner end in the bushing 58 which
is supported in the ?ange 59 of the bracket 60 75
2, 110,813
by riveting as at. 6| or by similar means, the
shaftE'I beingfurther rotatablysupported at its
outer end by the extension portion62 engaging a
bushing I 68 suitably secured , in the ?ange ~ 94
of the bracket 99 by riveting at 95 or by similar
means.
,
:The extension p0rtioni59A of the stud 55 enters
the groove-or slot 199' of theshaft 51 as above
statedand the extension vportion ‘56A and the
10 head portion of the shaft 51, through which
extends the slot‘ 99, both extend'within the bush
ing 6'! ‘which thus tends to support thg end of the
rol1erl29‘on the shaftl5l and at the same time pro
vides a driving, connection! between the roller 29
and the shaft 51.
It is now to be noted that then-springuorresilient
member ‘98 as disclosed‘in Figs. {3 andi4 is pro
videdwithan opening which extends around the
extension. portion 59A of the stud 55 and the
head portion 56 of theshaftr5'l throughiwhich ex
tends the slot'it‘t to secure the spring 68between
the :bu'shing'iSl ‘and the ~studi~55. Thespring 68
is thus ?xedly secured to the studi=~55 and the
shaft 51 so as to provide addriving connection
3
?xedly mounted in the ?ange 99 of the bracket
9| A by riveting at ‘92 why similar means.
The bracket 9IA is further provided with'the
?ange 98 to which is riveted the extension por
tion 94 of the shaft: 95 as at 99. The bracket 9 IA 5
is secured to the basemember I by the screws
9?. The shaft Bland the shaft 95 extend within
the sleeve or bushing 98 upon whichis ?xedly
mounted the frictional driving member 9| which
is, similar to that disclosed at 88 but of a smaller 10'
diameter; the. frictional driving member 9| being
clamped by the ?ange portionc92 of the sleeve 98
and the nut 93A which threadably engages‘ the
sleeve 98.
‘The key I99 forms a driving connection be
tween the frictional driving member BI and the
sleeve 98 and in a similarway a key I9I forms
a driving connection between a frictional driving
member 89 and the shaft ‘I4.
It is to be noted that the shaft 81 is provided 20
with a key way I92 which engages a key member
I93 on the sleeve member 98 to form a driving .
connection between the sleeve 98 and the shaft
81, the sleeve 98, however, being further freely
therebetween' so that when the shaft 51 is driven
rotatable on the stud 95 which is ?xedly sup
as hereinafter described the extension portions 69
ported in the ?ange 93 of the bracket 9IA. The
sleeve 98 is provided with a pair of ?anges I94
having a groove I95 extending substantially
therearound and therebetween, the groove I95
of thespring 68 will frictionally engage the outer
surface of-the ?ange'29 of the bushing 28 with
which it forms contacts by1 the curved-ends‘ ‘I9 of
30 the spring 68, thus forming a frictionaland rela
tively slidable driving engagement for the roller 29.
It is now to be: noted’that the. electric motor
assembly A, which-is of the synchronized type and
may be operated oniany kind of electric current,
is provided with the ?anges-I'll which are utilized
for securing the ‘electric motorassembly A to the
land 2 of the base member I- at a point between
the rollers 28 and 26, the ?anges 'II being secured
by the screws‘ ‘I2 which extend through the ?anges
40 ‘II to engage the base member I.
The electric motor assembly A is provided with
reduction gear mechanism suitably-mounted in
the extension housing 'I3-in a manner to pro
vide a lower driving speed'for the shaft ‘M which
is suitably mounted in the extension housing ‘I3
and connected with the driving. reduction mech—
anism therein but which is not disclosed and
which may be of conventional design.
The driving. shaft ‘I4 of the. electric'motor as
sembly A thus- extends \vat ‘ right angles to the
longitudinal axis of the electric motor assembly A
and is adapted to drive the hub member ‘I5 which
is secured to the shaft 124 by the pinl'IB or by
similar means to form a driving connection there
between, the hub ‘I5 being provided with a'?ange
‘I’! which, together with the ?angeF'IB threadably
engaging the extension ‘I9 of the hub ‘l5,v forms
a clamping means for holding and driving the
friction drive member 89 which is constructed
of feltrrubber or‘ similar material to provide a
frictional driving» engagement with the surface
8I of the frictional driven ?ange or disc 82 which
is supported on the shaft>83 and is suitably con
nected therewith by .the pin 84 or by similar
‘ means to form a driving connection therebetween,
it being understood that the above mentioned fric~
tional driving means may be replaced with ?ber
gear members or other ‘mechanical driving mech
anisms as‘desired.
'
25
being slidably engaged by the extension portions 30
I99 of the arm. I91 which is suitably secured to
the hub or nut member I98 which is provided
with a thread havinga relatively coarse or sharp
pitch as indicated by the thread I99 formed in
the control shaft I I9 which is rotatably supported 35
by its extension portion III having a bearing in
the bushing II2 which is ?xedly secured in the
?ange 99 of the bracket 9IA by riveting as at
H8 or by similar ‘means, the shaft H9 being
further supported by its extension portion H4
extending through and having a bearing in the
bushing 5 I5 which is ?xedly secured to the ?ange
93 by riveting at I I6 or by similar means.
The knob or handle H1 is supported on and
secured to the extension portion Ill! of the shaft
II9 by the pin N8, the control shaft Ill! thus
being adapted to be rotatably supported by the
knob or handle II 'I andto actuate the hub or
nut member I98 longitudinally of the shaft H9
to enable its arm I91 to slidablyimove the sleeve 50
‘98 longitudinally of'the shafts 81 and v99 to
position the frictional driving member 9i in vari_
ous driving positions relative to the friction driven
?ange or disc II9, the full lines in Fig. 3 indi
cating the frictional driving member 9! as be
ing substantially in a high speed position and
in which position it is located relatively near
the axis of the shaft-I29 which supports the
frictional driven ?ange or disc H9 which is se
cured to the shaft‘ I29 by the pin I2I , or by simi
60
lar means.
The dotted lines I22 indicate the position of
the frictional driving member 9I after it has been
moved substantially to its low speed driving po- _
siticn relative to the frictional driven flange or 65
disc H9 and the dotted lines‘l23 indicate the
relatively low speed position of the hub or nut
member I88 when the frictional driving mem
ber E22 is in its lowlspeed driving position ad
The shaft 83 extends within the bore 85 of. the ‘ jacent the peripheral portion of the frictional 70
head portion 86 of the shaft 81 and is connected. driven ?ange or disc I I 9 as indicated by the dotted
‘
therewith by the pin 88 or by similar means to lines I22.
The shaft I20 is suitably ‘and rotatably sup
form a driving connectionbetween the shafts 83
and-“81, the head portion?89of the shaft-8T- being ported in the'bushing I29 which is ‘?xedly se
rotatably mounted ~in'the bushingi89 which is cured in the ?ange. I25 by riveting at I28 or by 75
2,110,813
similar means.
The shaft I26 is further rotat
ably supported in the bushing l21 which is ?x
edly supported in the flange I23 by riveting at
I23 or by similar means.
It is to be noted that the ?anges I25 and I28
are formed on the bracket I33 which is secured
to the bracket l3! by the screws I32.
The pinion I33 is supported on the shaft I20
and is driven by means of the key I33, the pin
10 ion I33 driving the gear 535 which is rotatably
secured on the shaft I35 which is ?xedly se
cured in the bushing I31 by the pin I38, the
bushing E31 being secured by riveting at I39,
or by similar means, to the ?ange I25.
The gear I35 rotates between the bushing I31
and the nut Mi} which is threadabiy mounted on
the shaft i316, the nut hi6 being provided with a
pawl or driving pin MI which is adapted to en
gage the Geneva gear or wheel 542 which is
suitably secured to and ?xedly mounted on the
shaft M3 which is rotatably mounted in the
bushing Ed-‘l which is ?xedly secured in the ?ange
M5 of the bracket M5 by riveting at I41 or
by similar means.
The bushing M4 is provided with the extension
portion 533 which extends through the ?ange
I49 of the bracket I46, the bracket i415 being suit
ably secured to the bracket 555i by the screws I53.
The bushing I44 is provided with the boss 55!
which supports the other end of the shaft I36.
The bevel pinion gear I52 is secured to the shaft
I43 by the pin 553 or by similar means, the
bevel pinion gear 552 meshing with and driving
the bevel gear I54 which is mounted on the
shaft 51 and secured thereto as by the pin I55.
The bevel gear I54‘, drives the shaft 51 which
in turn drives the spring 63 as hereinbefore men
tioned. The spring I53 is interposed between
the washer E51 abutting the end of the bush
ing I24 and between the hub of the friction driven
flange or disc H9 to eliminate chattering in the
driving operation of the shaft I25 and its sup
ported parts.
It is to be noted that the Geneva gear or
tension portions I58 ?xedly secured in the flanges
36 and provided with extension portions I59
which rotatably engage the flanges i653 of the
brackets I6I which are located at opposite sides
of the base member I and are secured thereto
by the screws I62.
It is to be noted that the screw member 20 for
securing the brackets I9 in position extend
through the side walls of the cover or housing 3
and are adapted to be engaged by the nuts I63
which thus enable the operator to tightly or
loosely engage the screws 23 to permit the lens
I6, together with the brackets I3, to be moved
upwardly or downwardly to adjust the lens I6 in
the proper position in accordance with the de 15
sires of the operator.
The lens I6 is provided with a hairline I64 to
facilitate the maintenance of the vision of the
operator on the words or line of words which is
being spoken, the movement of the roller inter 20
mittently bringing the lines of the words up to
the hairline I64, the scroll pausing suf?ciently
with the line which is. being read to be disclosed
adjacent the hairline I64.
The light bulb I65 as disclosed in Fig. 2 may 25
be suitably mounted and supported from the side
wall of the brackets l9 so that it will illuminate
the scroll I1 and the lens I6 to render the read
ing matter I66, as indicated in Fig. 6, visible
through the lens I6 to the speaker, the light 30
bulb I35 being automatically moved with the
brackets I9 during their adjustment movement.
The electric switch I61 is suitably mounted in
the housing or cover 3 at its forward position
adjacent the clock mechanism I2 and is provided 35
with a lever or button I68 readily operated by the
speaker when standing adjacent the portable
desk.
The side wall portions of the cover housing 3
are provided with slots I15 and I'll as disclosed 40
in Fig. 2 to permit ‘the cover housing 3 to operate
by and adjacent the knobs or handles 5| and H1
at one side of the cover housing 3.
The cover
housing 3 may be provided with a suitable open
wheel I42 together with its pin engaging mem
ber I-‘aI is more clearly disclosed in Fig. 7 and
provides the pin type of intermittent gearing
for indexing or locating the shaft I63, together
with the spring 68 and its operatively connected
parts to a fractional part of a revolution, which
thus drives the roller 26 by an intermittent re
volving motion.
ing I12 through which extends the electric cable 45
I13 which is electrically connected with the elec
A roller may be mounted on the pin IdI if de
sired to eliminate friction in the engagement of
the driving means with the Geneva gear or
lighting buildings and similar structures.
wheel I42.
It is to be noted that the intermittent driv
ing operation of the Geneva gear or wheel I52,
together with its driving mechanism will pro—
60 vide an intermittent operation of the roller 26
which will thus cause the portion 25 as well
as the portion it’ of the scrolls, sheet or paper
to pause and enable the operator to better read
and stress the lines or words of a speech or ad
65 dress by permitting them to come up and dis
tric motor assembly A as disclosed in Fig. 3 to
permit the cable I14 to extend outside of the
cover housing 3 and to connect with a source of
electric supply as with a conventional plug, thus
permitting the electric plug to be plugged in to
an electric source of supply such as is used in
The cables I13 and H4 are electrically con
nected to the switch mechanism I 61 to permit 55
control by the button or lever 668 after the cable
I13 has been plugged in to its source of electric
current.
The cable I15 is electrically connected at I16
to the clock mechanism I2 and may be con 60
nected with the cable I14 in the terminal point
I16 to permit the clock mechanism to be auto
matically thrown into operation at the same time
the electric motor assembly A is started in its op
eration, this being controlled by the operation
close a certain number of lines at a given time
of the button or lever I68 of the switch mecha
through the lens I6, the movement of the scroll
nism I61.
pausing for a pre-determined length of time as a
given number of seconds and then automatical
ly moving at a given speed to another predetermined or intermittent period, thus enabling
the speaker to quickly
efficiently vision the
words of his speech without the inconvenience
of a continual movement of the scroll member.
The roller 24 is rotatably supported by ex
In a, similar way a conventional electric con
nection may be made between the light bulb I55
and the switch mechanism 561 to enable the light
bulb I65 to be illuminated at the same time the
operation of the clock mechanism I2 and the
electric motor assembly A is started.
In operation, the speech, music or words which
the speaker, user or operator is going to use in 75
5
2,1 10,818
an address or in any way are printed on the
scroll, sheet or paper I ‘I and then the scroll I1
is suitably secured to the roller member 23 and
stretched over and in engagement with the roller
24 to disclose the portion II of the scroll, sheet
or paper below the lens I6, the scroll being fur
ther extended by the portion 25 and suitably se
cured to the roller 26. Then with the beginning
of the speech or music or words to be used in the
10 address or entertainment being initially posi
tioned under the lens It, the speaker or operator
electrically connects the electric motor assembly
A with a, source of electric current which enables
the electric motor assembly to be automatically
15 started by the operation of the button or lever
I68 of the switch mechanism I67, the operation
of the button or switch member I68 also plug
ging in and operating the clock mechanism I2 as
well as illuminating the light bulb I65.
As the operator throws the button or lever I68
of the switch mechanism I61, the electric motor
assembly A will begin to operate and rotate the
shaft 14 which in turn drives the frictionally
driven member 80 which by frictional engage
ment with the surface 8| of the frictional driven
disc 82 will drive the shafts 83 and 81 which will
in turn drive the frictional driving member III
which in turn will drive the frictional driven
?ange or disc H9.
The driving of the frictional driven ?ange or
30
disc II9 will drive the shaft I20 and the gear
I33, the gear I33 in turn driving the gear I35
which drives the nut I40 together with the pawl
or driving pin MI which engages the Geneva
07 Ch gear or wheel I42 with an intermittent motion
permit the operation of the rollers 23 and 2d due
to the relatively slidable engagement of the spring
68 with the ?ange 29 of the roller 26.
It is to be noted that as the operator controls
the operative movement of the scroll I'I past and
under the lens I6, the clock mechanism I2 will
inform him as to the passage of time as indicated
by the conventional symbols, oneof which is dis
, closed at vIlI'I in Figs. 1 and 6.
When it is desired to insert or replace a scroll 10
II on the rollers, the cover housing 3 is unlocked
and may be swung upwardly on the hinge mecha
nisms t to permit ready accessibility to the oper
ating mechanism normally maintained within the
cover housing 3.
It is to be understood that the propelling or
driving means of my invention may be altered or
redesigned to meet various conditions and neces
sities without departing from the spirit and scope
of my invention.
I claim:
.
1. In a portable desk for use by a speaker mak
ing an address, the combination of a base mem
ber, a cover housing pivotally mounted on said
base member, a lens member mounted in an open
ing in said cover housing, a roller member rotat
ably supported by said base member in said cover
housing, means for manually rotating said roller
member, a second roller member rotatably sup
ported by said base member in said cover hous- ‘
ing, a second means for manually rotating said
second roller member, a third roller member ro
tatably supported by said base member in said
cover housing, a sheet or scroll suitably secured
to and rolled on said ?rst mentioned roller mem
ber and extending across said lens member, said
sheet or scroll member engaging said third roller
I54 together with the shaft 51, which drives in member and being suitably secured to said second
roller member, said sheet or scroll being pro
turn the spring 68 which, with its frictional con
tact through the curved portions ‘III with the out
vided with the words of said address thereon, a
side surface of the ?ange 29, will drive the roller shaft rotatably supported by said base in said
26, the stud 55 rotating in the bore 56 of the cover housing, a friction drive member rotatably
supported by said base member, a gear train
?ange 29.
The operator selects the speed at which the _ driven by said friction drive member and pro-—
roller 26 operates by means of the nut member vided with means for engaging and driving a
I03 which is movably operated longitudinally on Geneva wheel, a Geneva wheel rotatably sup
ported by said base member and driven by said
the shaft I II) by the knob or handle member I"
to position the frictional driving member 9| as means of said friction drive member, a, relatively
desired relative to the periphery of the’ frictional slidable mechanism driving said second roller
driven disc II9 to select a speed at which it is member, said relatively slidable mechanism be
ing driven by said Geneva wheel, a threaded
desired to have the scroll operate.
As the roller 26 is operated it will draw the shaft rotatably mounted, manual means for ro
portion 25 of the scroll I‘! over the roller 24 and tating said threaded shaft, a nut member mov
ably mounted on and adapted to- be moved longi
off of the roller 23 until the end of the words or
tudinally of said threaded shaft by said threaded
printed matter on the scroll II is past the hair
shaft, said nut member being adapted to actuate
line I64 of the lens I6.
said friction drive member to diiferent driving
I It is to be noted and understood that due to
the vengagement of the pin MI of the nut member positions, an electric motor assembly supported
Hill with the Geneva wheel or gear I42, each line in said cover housing, and drive mechanism
of words of the scroll II will be moved adjacent operatively connecting said electric motor as
the hairline I66 and then the scroll I‘! will pause sembly and said ?rst mentioned shaft.
a predetermined length of time and then again
2. In a portable desk, the combination of a
move automatically at a given speed so that the scroll, rollermeans for moving said scroll, means
for driving said ?rst mentioned means, a hous
other lines of words are presented in their turn
ing covering said scroll and said roller means,
adjacent the hairline I64.
The operation of the nut member I I‘! will thus said housing being provided with an opening
above said scroll, a pair of brackets oppositely
retard or increase the speed of the scroll operat
ing mechanism as desired by the operator and in disposed in said opening and each provided with
portions for supporting a lens, and a lens sup
accordance with the speed with which it is de
ported in said portions of said brackets and ex
sired that the words on the scroll II‘ are to ap
to drive the shaft I43 which in turn drives the
driving bevel gear I52 which drives the bevel gear
'50
55
60
65
proach the line I64.
Also it is to be noted that my scroll operating
mechanism may be driven by the electric motor
assembly A or it may be driven by hand by means
75 of the knob or hand members 5! which will thus
tending within said opening of said housing.
3. In a portable desk, the combination of a
scroll, roller means supporting said scroll, a shaft
?xedly supported, a second shaft rotatably sup
ported in alignment with said ?rst mentioned
40
60
65
70
6
2,110,813
shaft, a sleeve member slidably mounted on said
?rst mentioned and said second shafts and driven
by said second shaft to rotate therewith, a third
shaft rotatably mounted adjacent said ?rst men
tioned and said second shafts, a nut member
movably mounted on said third shaft and adapted
to be driven thereby axially thereof, said nut
member being operatively connected with and
adapted to shift said sleeve member axially of‘
10 said ?rst mentioned and said second shafts, a
friction drive member mounted on said sleeve
member and driven thereby, a friction disc mem
ber driven by said friction drive member, means
for driving said ?rst mentioned shaft, means for
15 manually rotating said third shaft, power trans
mission means connecting said friction disc mem
ber and said roller means, and a lens supported
above said scroll.
4. A portable desk of the type described, com
20 prising a base, a housing disposed over said base
and having side walls and a top wall, the top wall
comprising a portion disposed at an angle to the
horizontal, said portion having an opening, a
lens disposed in said opening, bracket means
.25 carried by the side walls for supporting said lens,
devices carried by said base and disposed within
said housing for supporting and moving a scroll
past said lens in a plane parallel to the plane of
said portion of said top wall, and means for ad
justably moving said bracket means and said lens
to and from said scroll.
5. A portable desk of the type described com
prising a base, a pay-out roller and a take-up
roller carried by said base, an idler roller carried
35 by said base and disposed substantially above
the plane of the pay-out and take-up rollers,
motor means carried by said base for rotating
said take-up roller, means for intermittently
transmitting power from said motor to said take
40 up roller, manual means for rotating said pay
out and take-up rollers, a housing supported by
said base, and a lens carried by said housing and
disposed over and in a plane parallel to the plane
formed by said pay-out and idler rollers.
6. A portable desk of the type described com
45
prising a base, a pay-out roller and a take-up
roller carried by said base, an idler roller car
ried by said base and disposed substantially above
the plane of the pay-out and take-up rollers, mo
50 tor means carried by said base for rotating said
take-up roller, means for intermittently trans
mitting power from said motor to said take-up
roller, a housing supported by said base and a
lens carried by said housing and disposed over
55 and in a plane parallel to the plane formed by
said pay-out and idler rollers.
'7. A portable desk of the type described com
prising a base, a pay-out roller and a take-up
roller carried by said base, an idler roller carried
by said base and disposed substantially above
the plane of the pay-out and take-up rollers, mo
tor means carried by said base for rotating said
take-up roller, a housing supported by said base,
a lens carried by said housing, said lens being
disposed in a plane parallel to the plane formed
by said pay-out and idler rollers, and means for
moving said lens to and from said last mentioned
plane.
10
8. A portable desk of the type described, com
prising a housing, the upper wall of said housing
having two openings, an electrically operated
clock disposed within said housing and in reg
istry with one of said openings, devices disposed 15
within said housing for supporting and moving
a scroll past the other opening, said devices com
prising an electric motor and means for inter
mittently transmitting power from the motor to
the scroll, and a switch carried by the housing 20
and electrically connected to the clock and the
motor and controlling the simultaneous operation
of both.
9. In a portable desk, the combination of a
housing, a pair of rollers mounted therein for
supporting a scroll manuscript, means carried by
each roller and disposed eXteriorly of the hous
ing for the manual rotation thereof and for man
ually feeding said scroll in either direction, a
motor disposed within the housing, and inter
mittent power transmitting means connecting
said motor to one of said rollers, the means com
prising a relatively slidable device, thereby per
mitting the manual control of the movement of
said scroll in either direction without interrupt
ing the operation of said motor.
10. A portable desk comprising a base plate,
an electric motor mounted on said base plate, a
pay-out roller and a take-up roller carried by
said base for supporting and moving a scroll
manuscript, an electric motor carried by said
base, intermittent power transmitting means op
eratively interposed between said motor and the
take-up roller, and a housing having two open
ings, an electric clock carried by said housing and
exposed to View through one of said openings, and
a lens carried by said housing mounted in the
other opening, an electric switch controlling the
clock and motor, said housing being hingedly
mounted on said base and enclosing said motor 50
and rollers, and said power transmitting means;
said rollers each having a knob exteriorly of the
housing, and said power transmitting means com
prising a relatively slidable device, thereby per
mitting the manual control of the operation of 55
said rollers without interrupting the operation
of said motor.
DAVID BARRON O’KELLY.
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