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Патент USA US2128868

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Aug. 30, 1938.V
2,128,868- -
Original Filed oct. 6, 1952
I l “HHM
4 sheets-sheet 1
u A i.
Aug. 30, 1938.
Original Filed Oct. 6, 1932
4 Sheets-Sheet 2
BYFranlc l'lm’ller
Aug. 30, 1938.
Original Filed Oct. 6, 1932
4 Sheets-Sheet 3
BY Frank EÍWeller
W, M »- NM1.
Allg. 30, 19-38.
Original Filed Oct. 6, 1932
4 Sheets-Sheet 4
Patented Aug. 30, 193%
' 2,128,863
Frank E. Weller, Bloomfield, N. J., assigner to
Trans-Lux Corporation, a. corporation of Del
Original application October 6, 1932, Serial No.
636,490. Divided and this application October
26, 1934, Serial No. 750,079. Renewed January
17, 1938
6 Claims. (Cl. 813-24)
Fig. 10 is an elevational view, partly in sec
My invention relates to mechanism for feed
ing or drawing a printed web through a projec
tion field.
In an important respect, my invention relates
5 to a combined web-feeding and -tensioning ar
rangement for feeding the web through a pro
jection field while maintaining the same taut and
plane to insure highly satisfactory image pro
My invention has further reference to novel
features and characteristics of mechanism of
tion, and is taken on the line I0--I0 of Fig. 9;
Fig. l1 is a vertical sectional view, partly in
elevation, illustrating a modification of the in
Fig. 12 is a plan view, partly in section, of a
part of the mechanism shown in Fig. 11; and
Fig. 13 is a vertical sectional- view, partlyl in
elevation, illustrating an arrangement for pass
ing convection heat currents into contact with a 10
section of the printed web.
In general, my invention relates to a combined
the character stated whereby said mechanism
may be efficiently and satisfactorily operated by
printing device and projector, said device p_rint
aperson of little skill.
ing news items on a web which is moved through
Various other objects, advantages and char
acteristics of my invention will become apparent
the projector to project images of the printed 15
characters on a display screen.
Although com
from the following detailed description taken in bined devices of this general character are well
y known in >the art, my invention is important be
connection with the accompanying drawings.
My invention resides in the feeding mecha
2i) nism, arrangements and features of the charac
ter hereinafter described and claimed.
This application is a division of my pending
application Serial No. 636,490, filed October 6,
For an understanding of my invention and
for an illustration of some of the forms thereof,
reference is to be had to the accompanying draw
ings, in which:
Figure 1 is a side elevational view of mecha
nism as constructed in accordance with my in
Fig, 2 is a side elevational View of the mech
anism of Fig. 1 but with various parts in different
Fig. 3 is an enlarged vertical sectional view,
partly in elevation, of mechanism as constructed
in accordance with my invention;
Fig. 4 is a perspective view of a part of the
mechanism shown in Fig. 3;
Fig. 5 is a plan view, with parts omitted, of a
part of the mechanism shown in Fig. 3;
Fig. 6 is an elevational view, partly in sec
tion„and is taken approximately on the line
4,. 6--6 of Fig. 3 looking in the direction of the ar
Fig. 7 is an elevational view, partly in section,
and is taken approximately on the line 1-1 of
Fig. 3 looking in the direction of the arrows;
Fig. 7a is a sectional view, partly in pian, o1'
a part of the web-tensioning mechanism;
Fig. 8 is an elevational view illustrating a
mod'ñcation of the invention;
Fi . 9 is a plan view of a part of the mecha
55 nism shown in Fig. 8:
cause involving novel features contributing great
ly to improved projection and simpliñcation of 20
For a detailed description of my invention,
reference is to be first had to Figs. 1 and `2,
wherein C represents any suitable cabinet or
housing having, as herein shown, a detachable
or movable door d. Disposed within the cabinet
C isra projector P and a printing device D, the
latter being movable to the exterior of the cabi
net C as hereinafter more particularly described.
As more fully described in U. S. Letters Pat
ent No. 2,018,691, granted October 29, 1935, I
represents a base or support which may be suit
ably- secured to the vbottom wall .of the cabi
net C. Rotatably mounted on the base I is a
turntable 2 which may carry a pivoted latch 3 35
coactable with a notch in the base I for retain
ing the parts in the normal position shown in
Fig. 1, the latch 3 being releasable, however, so
that the turntable 2 may be rotated through an
angle of 180 degrees into the position shown in
Fig. 2.
Upstanding from the turntable 2 is -a standard
4 on which the aforesaid projector P is supported '
in any suitable manner.
Pivoted to opposite sides of the turntable 2 are
the lower ends of two pairs of legs 5, 5 and 6, 6,
the upper ends of which are pivoted to a table
1. The latter carries a pair of spring-controlled
latches 8, 8 which coact, respectively, with latch
ing members 9, 9 carried by the standard 4. As
clearly appears, the latches 8, 8 serve to retain
the aforesaid pairs of legs in vertical position,
Fig. 1, and, when said latches are released, said
pairs of legs may be moved to inclined position
as shown in Fig. >2 to the extent permitted by
one or more chains I0, or equivalent.
The printing device D, in the example herein
shown, is of the type known to the art as a Dow
Jones printer.
The printing mechanism proper
is detachablyretained on the table 'I by a frame
plate II secured in suitable manner to said table
l. Depending from the table ‘I is a housing I2
for the motor and other operating parts of the
10 printing. mechanism.
As well understood in the art, the printing de
vice D comprises spaced, upstanding plates in
which is journaled a horizontal shaft I3, Fig. 3,
carrying a type wheel I4 having characters dis
15 tributed around the periphery thereof. The
wheel I4 is freely slidable along the shaft I3 but
is keyed thereto for rotatable movement there
with. Coactable with the type wheel I4 is‘an
inking roller I5 to which ink is fed by a roller I6,
20 ink being supplied to the roller I6 in suitable
manner as well understood in the art. 'I'he roll
ers I5 and I6 are supported on a suitable frame
I'I slidable on a rod I8 and with which the type
wheel I4 together with said rollers I5 and I6 are
plurality of spaced rollers 32 are mounted for ro
tatable movement therewith. As shown particu
larly in Fig. 5, it is desirable that each of the
rollers 32 be provided with peripheral rows of
corrugations along the respective opposite sides
thereof, these rows of corrugations being sepa
rated by a channel disposed centrally thereof.
Depending from the aforesaid bottom wall 23
are a plurality of spaced ears which support a
transverse rod 33, Fig. 3. Mounted on the rod 33
for free oscillatory movement are a plurality of
spaced fingers 34 .which extend in parallel re
lation beneath the wall 23. Figs. 3 and 7a, each
finger 34 terminating in an inclined surface as
shown in Fig. 3. The fingers 34 are positively 15
biased for movement in a counterclockwise direc
tion, Fig. 3, and, to this end, it is desirable that
each finger be formed with an olîset mass of ma
lterial 34a of sufficient weight to obtain the de
sired biasing effect. To prevent the operative 20
ends of the fingers 34 from dropping unduly, it
is desirable for each finger 34 to comprise a sec
tion 34b through which is threaded a screw 35
Coactable with the lower surface of the wall 23,
25 movable as a unit in either direction longitudi
Fig. 3.
nally of the shaft I3. Coactable with the type
wheel I4 is a platen or presser bar I9 which is
normally biased to the position shown in Fig. 3
and which is intermittently actuated, as herein
30 after described, for printing purposes.
As shown in Figs. 1 and 2, a pair of the legs 5,
Referring particularly to Figs. 3, 5 and 6, there
is shown a frame 36 which, along >each side
thereof, comprises a pair of spaced ears 31, 31a
so arranged that one pair thereof fits snugly'be
tween one pair of the ears 30, 30a while the other
pair thereof fits snugly between the other pair of
6 support a suitable bracket on which is mounted
a reel 20 having a web W wound thereon._ This
the ears 30, 30a. As shown on the drawings, a
screw 38 is'threaded through the pair of ears
web, in the example shown, is of suitable trans
30, 38a at the left, Fig. 7, and the pair of ears
31, 31a. which are registered therewith. It re
sults, therefore, that the frame 36 may be swung
clockwise from the full to the broken line posi
tion of Fig. 5 about the pin 38 as an, axis. The
frame 36 may positively be retained in the full
line position of Fig. 5 by a screw 39 threaded in
the ear 3l)> shown at the right of Fig. 7.
In accordance with my invention, the screws
38 and 39 may be interchanged from the respec
tive positions shown in Fig. 5. If this is done,
the frame 36 may be swung from the full to
dot-and-dash line position of Fig. 5 about the
relocated pin 38 as an axis. 'I‘he advantage of
this feature will be hereinafter pointed out.
35 parent or translucent material, such, for exam
ple. as Cellophane From the reel 20, the web W
extends upwardly between the type wheel I4 and
platen I9, said web W further extending through
‘the projector P as hereinafter to be described.
40 After the printing wheel I4 has been rotated to
a selected position, the platen I9 is actuated to
thrust the Vweb W intoengagement with the se
lected character on said printing wheel.
The projector P comprises a housing 2| suit
ably supported on the standard 4, said housing
having disposed therein a lamp bulb 22 or other
suitable source of illumination. Light from the
lamp 22 emerges as a light beam through a lat
eral opening 2Ia in the housing 2I.
Mounted in upstanding lugs 48, 40a of the
Arranged in horizontal alinement with the ' frame 36 is a rod 4I on which a plurality of roll
aforesaid opening 2Ia is a light passage formed ers 42 are mounted. These rollers 42 comprise 50
by a bottom wall 23 and spaced side walls 24 and sections 42a_ which coact, respectively, with the
24a, these walls forming a single casting which » aforesaid rollers 32 and each roller 42 also com
is suitably secured to the lamp housing struc
prises sections 4217 which gives Weight thereto.
55 ture. Disposed in the light passage thus formed
As clearly illustrated in Fig. 3, the rollers 42
are a pair of condenserlenses 25, 25a which are
are loosely mounted on the rod 4I whereby they
detachably retained in operative position in suit
are biased in a downward direction for a reason
able manner, as by thetransverse rod 26 and
hereinafter to be stated.
spring members 21.
Transversely arranged -with respect to the side
walls 24, 24a is a front4 wall 28, Figs. 3 and 7,
which forms a part of another casting suitably
secured to the casting which comprises thewalls
23, 24, 24a and which vis provided with an aper
65 ture 28a forming the projection field of the here
in described projection mechanism, the con
denser lens 25 also abutting said wall 28v as clear
ly shown in Fig. 3.
As illustrated particularly in Fig. 3, the afore
70 said front wall 28 comprises upper extensions 29v
at the respective opposite sides thereof, 'each of
these extensions terminating in a pair of spaced
ears 30, 30a, Fig. 7.
The extensions 29 of the front wall 28 form
bearings for a. transverse shaft 3| on which a
The aforesaid frame 36 comprises sections 36a,
36a extending downwardly outside of the path of 60
vthe projecting light beam, said sections carrying
a journaled‘shaft 43 having a plurality of spaced
wheels 44 mounted thereon for rotatable move
ment therewith. Preferably, as illustrated, the
wheels 44 are edged and they are so spaced that
each wheel 4'4 coacts with one of the aforesaid
. fingers 34.
Secured tothe frame 36 is a bracket 45 formed
in part ‘as an annulus for the reception of the
casing 46 of an objective lens. ’I'he'bracket 45 70
also' comprises depending sections which carry
a plate 41 on which a mirror 48 is suitablyv se
cured, as by the spring clips 49.
In order to place the herein described projector
mechanism in condition for operation, the frame 75
36 is swung on the pivot 38 until said frame to
gather with the parts carried thereby are moved
into the position shown at the left of Fig. 5. A
length of the web W is then drawn through the
printing device D and laid against the plate 28,
said web resting on the' rollers 32 and projecting
therebeyond. The frame 36 is then returned to
the full line position illustrated in Fig. 5 and the
screw 33 placed in the position shown to positive
10 ly lock said frame in operative position. In so
doing, the rollers 44 move against a transverse
section of the web W which is gripped between
said rollers and the fingers 34. At the same time,
the roller sections 42a come into coacting relation
with the respective rollers 32 whereby a second
transverse section of said web is gripped.
Preferably, as shown in Figs. 1, 2 and 13, an
area of the top wall of the cabinet C, above the
lamp housing 2|, is provided with the slots or
20 passages 50.
The web W is passed through this
top cabinet wall C and arranged in overlying re
lation with respect to this slotted area, said web
'extending beyond the cabinet and hanging down
at one side thereof as clearly shown in Figs. 1
and 2.
The mechanism with the web W properly posi
tioned therein for the printing and projecting
operations is shown in Figs. 1 and 3. The print
' ing mechanism D, as hereinbefore described, com
30 prises the printing wheel I4 which moves step
by-step along the shaft I3 transversely of the
web W, while the latter is stationary, to print a
> line of information thereon.
At the conclusion
of each line-printing operation, the printing
wheel | 4 is automatically returned to its initial
position and, simultaneously, a step of movement
is imparted to a train of gear mechanism which
includes the gears 5| and 52, Fig. 3. 'I‘he gear
52 is carried by a stub shaft 53 rotatably mount
ed in a bracket 54 carried by a rod 55 secured to
the frame of the printing device D, the bracket
54 being maintained in the proper adjusted po
sition on the rod 55 by a screw 56,. The shaft
53 is operatively connected to the shaft 3| and,preferably, a flexible shaft 51 is thus utilized, one
end of the shaft 51 being connected to the shaft
53, Fig. 4, and the other end of said shaft 51 be
ing connected to the shaft 3|, Fig. 7.
`The rollers 32 are mounted on the shaft 3|,
the web W being gripped°between these rollers
and the roller sections 42a.
Accordingly, it re
sults that veach return of the printing wheel I4
to its initial position eifects actuation of the
rollers 32 whereby a step of movement is im
parted to the web W, the gear ratio being so ’
ters then on the web section in the projection
field 28a. These images remain stationary on
the screen while the web remains stationary but,
each time that the printing wheel I4 returns to
its initial position, the printed lines on the web
are stepped upwardly` to thereby impart corre
sponding movement to the lines of images on the
An important feature of my invention involves
the passage of the web W exteriorly of the casing
C and over the grooves 50. Heated air from the
lamp 22 ascends through these grooves and con
tacts with the overlying web section~ to effect
rapid drying of the ink thereon. This is ad
vantageous because permitting the web section 15
beyond the grooves 50 to be handled without
smudging the inked characters thereon.
Another important feature of my invention re
lates to the disclosed arrangement for transverse
ly gripping the web W at spaced points both 20
above and below the projection field.- It is high
ly important for that web section in the projec
tion iield at any given time to be substantially
taut and plane in configuration, i. e., unwrinkled
and undistorted. This, in accordance with the 25
present invention, is accomplished in a highly de
sirable manner.
Immediately below the projection field, the 4~
web W is gripped at spaced .points thereacross
by the rollers 44 and the fingers 34 which coact,
respectively, therewith, the offset weights 34a on
each of the fingers 34 functioning to bias the lat
ter toward the rollers 44 with sumcient force to
grip the web W in the desired manner. It fol
lows, therefore, that equal restraining forces are
applied to the web W at spaced points thereacross
and it is against these forces that the web is
pulled upwardly by the rollers 32. The latter to
gether with the roller sections 42a also grip the
web at spaced points thereacross and, in an even 40
manner, move the web upwardly against the re
straining force applied thereto by the fingers 34.
In practice, it has been demonstrated that
a Web-restraining and -pulling arrangement
of the character just described is highly ad 45
vantageous and efficient because maintaining
the web. section in the projection field plane
and‘ even with resultant highly satisfactory
projection. The provision of the edged roll
ers 44 is highly important because these rollers 50
coact with the freshly inked surface of the web W.
However, since these rollers are of knife-edge con-v
figuration, little or no smudging of the ink oc
The use of weights, i. e., the finger sections 55
chosen as to obtain the desired spacing between v34a and the roller sections 42h, gives improved
the printed lines. As shown in Figs. 1 and 2, the results compared with the spring arrangements
web 'W extends over the slotted cabinet area 50
and hangs down beside the front cabinet wall.
The action of gravity on this hanging web sec
tion tends to keep the web relatively taut back
to the wheels 42.
It follows, therefore, that the web W is moved
upwardly step by step to bring the successive lines
of printed matter into the projection field, i. e.,
the field defined by the aperture 28a of plate
28. Light from the lamp 22 passes from right to
left, Fig. 3, through the condenser lenses 25, 25a,
through the aperture 28a, and then through the
web section defined by said aperture, the light
which heretofore have been ¿generally utilized for
biasing purposes. The heat generated by the pro- jection lamp and other adverse factors cause the 60
force of a biasing spring to vary or change from
time to time. The biasing effect of the above
described weights, however, is constant and ln
Another important advantage of the herein de 65
scribed invention relates to the arrangement
whereby the frame 35 together with the parts
beam thereafter engaging the mirror 48 and be
carried thereby may be swung to one side when
it becomes necessary to rethread the web through
the projector field or otherwise service parts of 70
the machine.4 By virtue of the disclosed arrange
ing deflected vertically upward through the ob
jective lens 46, said light beam thereafter passing
to any suitable reflecting system and screen, not
skilled worker.
v shown, where images appear of the tape `charac
ment, the web rethreading operation is extremely
simple and readily performable even by an un
A further feature of importance relates to the
interchangeability of the pivot pin for the frame
36. Accordingly, it follows that said frame may
be moved to either of the broken line positions
illustrated in Fig. 5, it being necessary simply to
reverse the respective positions of the screws 38
and 39 as desired. It may be desirable thus to
interchange these pivot screws due to some local
condition arising in connection with a particu
lar installation which might prevent pivotal
10 movement of the frame 36 in one direction while
permitting free pivotal movement in the other di
In Fig. 2, I have illustrated the printing mech
anism D in the servicing position thereof. The
door d of the cabinet C has been removed and
lthe turntable 2 has been rotated through an an
gle of 180 degrees. Thereupon, after release of
the latches 8, the printing mechanism is swung
0n the legs 5, 6 to the extent permitted by the
20 chains I0. It will be observed that the flexible
shaft 51 is of such length that the described
movement of the printing device D to servicing
position may be effected without interfering with
the driving connection between said printing de
25 vice and the web-pulling rollers 32. This, ob
viously, is a distinct advantage. After the print
ing device D has been returned to normal posi
tion, the web section exteriorly of the cabinet
may be grasped to pull the web through the pro
30 jection ñeld until the slack has been taken up
and, thereafter, the normal printing and web
pulling action occurs.
Referring to Figs. 11 and 12, there is illustrated
a modified arrangement for biasing the web into
35 engagement with the rollers 44. Thus, in lieu
of the fingers 34, there is utilized a bar 60, the
length of which is about the same as the width `of
the web W. The bar 60 is pivoted for movement
in a horizontal plane to a second bar 6| which
40 at one end projects beyond the wall 24 and at its
other end projects beyond the wall 24a. Pivoted
exteriorly on each of the walls 24 and 24a is a
bell crank lever 62 ‘which comprises an offset
weight section 62a, the levers 62 being suitably
45 connected to the respective opposite ends of the
bar 6|.
The levers 62 tend to move in a clockwise di
rection, Fig. 12, whereby the bars 6| and 6|) are
biased in a direction from right to left, Figs. 11
50 and 12. The bar 60 comprises a sloping surface
and maintains the web W against the rollers 44
with the required degree of pressure, the pivotal
mounting for said bar 60 permitting the same to
assume the proper operative position with respect
55 to the rollers'44. Thearragngement of Figs. 11
and 12 as thus described gives satisfactory results
although the arrangement involving the fingers
34, at present, is preferred thereover.
In Figs. 8 and 9, I have illustrated a modifica
60 tion of the invention as regards the driving con
nection between the printing device D and the
projector mechanism P. As shown, the member
55 supports a bracket 10 which carries a stub shaft
1| having secured thereto a cam 12 together with
65 a gear 13 which meshes with the aforesaid gear
5|. Pivoted on the bracket 19 is a frame 14 car
rying a cam follower 15 and a mercury switch
16, the frame 14 being biased by a spring 11 in
a clockwise direction, Fig. 8, whereby the fol
70 lower 15 is maintained in engagement with the
cam 12. Leading from the switch 16 is a cable
comprising a. pair of conductors which lead to the
respective terminals of a solenoid 18, said cable
including the plug 19 which is readily detachable
75 from the socket 80 for opening the circuit to the
solenoid 18.
The solenoid 18 may be mounted
on the exterior surface' of the wall 24 and is uti
lizable for actuating a lever 8| which terminates
in a gear segment 82 disposed in meshing rela
tion with respect to a gear wheel 83 loosely mount
ed on the aforesaid shaft 3|. Rotatable with the
gear wheel 83 is a disk 84 to which is pivoted a
pawl 85 coactable with a ratchet wheel 86 ro
tatable with said shaft 3|.
'As clearly appears in Fig. 8, the cam 12 is of
the double-surface type and, as shown in this iig
ure, the cam is in one of its normal positions.~
The gear ratio of the train of mechanism lead
ing up to the gears 5| and 13 is such that each
actuation of said train of mechanism, as effected
by the return of the printing wheel I4 to its initial
position, causes the cam 12 to rotate through an
angle of 180 degrees.
It follows, therefore, that when said printing
wheel I4 returns to its normal position as stated, 20
the cam 12 is rotated counter-clockwise, Fig. 8,
through an angle of 180 degrees. As a result, the
switch 16 is tipped in a clockwise direction, Fig.
8, and the circuit through the solenoid 18 is
Accordingly, the lever 8| is moved in a
counter-clockwise direction, Fig. 8, to thereby im
part a rotatable step of movement to the shaft
3| while the web W is correspondingly moved
through the projection field.
Movement of the cam 12 through the angle of 30
180 degrees occurs almost instantaneously and,
as will be obvious, the switch 16 is immediately
returned to the position shown in Fig. 8. As a
result, the circuit through the solenoid 18 is re
opened and the lever 8| returns to the position 35
shown, the pawl 85 idling with respect to the
ratchet wheel 86.
The mechanism is now in con
dition to impart the next feeding impulse to lthe
web W which occurs, in the manner described, as
soon as the printing wheel |4 again returns to its 40
initial position.
When the application of energy to the shaft 3|
is discontinued in response to deenergization of
the solenoid 18, there occurs some reverse move
ment of the shaft 3| in a counter-clockwise di 45
rection, Fig. 8, unless special mechanism is pro
vided to prevent such reverse movement. Mech
anism` for this purpose is illustrated in Figs. 9
and 10.
As shown, a housing 95 is suitably secured to
the extension 29 of the wall 24 and this housing
has a disk 94 rotatable therein, the disk 94 being
secured to the shaft `3| for rotatable movement
therewith. The housing 95 comprises a passage
having therein a ball 93 biased by a spring 90 into
engagement with the edge of the disk 94.
When the shaft 3| is moved in web-feeding
direction by the pawl 85, it moves in a clockwise
direction, Fig.' 10. During such movement of the
shaft 3|, the disk 94 merely thrusts the ball 93
against the spring 90. However, as will be
obvious from Fig. 10, the ball 93 functions as a
locking dog and positively prevents counter
clockwise movement of the disk 94 and the shaft
3| which is connected thereto.
Since the ball 93 and disk 94 function as just
stated, it results that the shaft 3| does not recede,
even slightly, from the position to which ad
vanced by the pawl 85.
This is highly desirable
because preventing the occurrence of sag of the 7.
web section in the projection field. Should this
web section sag, the resultant projection is more
or less unsatisfactory due to poor image focus.
Use of the mechanism last described, namely,
the housing 95, disk^’94, ball 93 and spring 90
is highly desirable with all forms of my invention.
Hence, in Fig. 7, I have illustrated such mecha
nism as applied to the shaft 3l to prevent reced
ing movement thereof after the application of
5 energy to the shaft 51 has been discontinued.
With an arrangement of the character de
scribed in Figs. 8 and 9, it is necessary merely to
detach the members 19 and 80 when the print
ing device D is to be moved to a position such as
l0 shown in Fig. 2. If desired, the conductor ar
projector, the top wall of said cabinet above
said lamp housing being provided with passages,
said web passing from said projector across thev
top wall of said cabinet and over said passages
whereby heat from said lamp housing dries the 5
ink on the web section overlying said passages.
3. In combination, a projecting device, a print- i
ing device, a cabinet within which said devices are
normally received, means for moving one of said
-devices to the exterior of said cabinet, and a 10
. rangement connected to the members 19 and 80 - flexible shaft for transmitting power from one
may be of suñicient length to permit said print
ing device D to be moved to the position last
named without separation of said members 19
l5 and 80. With such an arrangement, operation
of the printing device need not be discontinued
when the latter is in its servicing position.
In the appended claims, it shall be understood
that the expressions “means for printing”,
20 “printing
device”, or equivalent expressions
generically comprehend a Dow-Jones or other
printer, or any equivalent arrangement such, for
example, as a. typewriter, teiautograph, etc. for
.1 producing or forming characters in line form
» transversely of a traveling web.
While the invention has been described with
respect to certain particular preferred examples
which give satisfactory results, it will be under
stood by those skilled in the art after under
30 standing the invention, that various changes and
modiñcations may be made without departing
from the spirit and scope of the invention and it
is intended therefore in the appended claims to
cover all such changes and modifications,
What is claimed as new and desired `to be se
cured by Letters Patent is:
1. In combination, means for printing char
acters on a web with ink, a projector including
alamp housing for projecting images of said
if i characters, Ia cabinet for said printing means
and projector, said web passing from said pro
of said devices to the other, said 'flexible shaft
thus transmitting power when said one device is
.either interiorly or exteriorly of said cabinet.
4'. In combination, a projecting device, a print- 15
in‘g device, a cabinet within which said devices
are normally received, means for moving said
printing device to the exterior of said cabinet, and
a ñexibleshaft for transmitting power from said
printing device to said projecting device, said 20
iiexible shaft thus transmitting power when said
printing device is either interiorly or exteriorly
of said cabinet.
5. 'I'he combination with a device for print
ing characters transversely on a web, said device 25
having a gear wheel actuated at the conclusion
of each line-printing operation, of means for
drawing said web through a projection field, a
shaft for operating said drawing means, a gear
wheel in which said shaft terminates, a bracket 30
frame carrying said second named gear wheel,
and means for adjusting the position of said
frame to dispose said second named gear wheel in
meshing relation with said first named gear wheel.
6. The combination with a device for printing 35
characters transversely on a web, of -a projector
and a projection field mounted in fixed position,
means for imparting movement to said web to
draw the same through said projection field at the
conclusion of each line-printing operation, means 40
for movably supporting said printing device
jector across the top wall of said cabinet, and _ whereby it may be moved to a servicing position
means whereby heat from said lamp housing has
free access to a section of the web overlying said
45 top wall so as to dry the ink thereon.
2. In combination, means for printing char
acters on a web with ink, a projector including a
lamp housing for projecting images of said char
acters, and a cabinet for said printing means and
wherein it is spaced from the ñxed projection field,
and means whereby said supporting means and
said printing device may be located in a prede- 45v
termined position with respect to said fixed pro
jection ñeld.
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