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Патент USA US2135948

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'-.Nov.8,1938.
'
J; L, PETZ
TYPEWRITING‘MACHINE
.
9 2,135,948;
Filed March 2, 1937
INVENTOR
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'
A'f'TORNEY
»
-
’ Patented Nov. 8,- 1938
-»2,135,948 _
UNITED STATES PATENT OFFICE
2,135,948
- TYPEWRITING MACHINE
John/L. Peytz, Rochester, N. Y., assignor to inter
national Business Machines Corporation, New
York, N. Y., a corporationvof New York
' Application March 2, 1937, Serial No. 128,568
23 Claims. (01. 197-133)
and press the work sheets ?rmly against the
This invention relates to improvements in con
tinuous billing machines and is directed toward
an improvement in the machine described in ap
plication Serial No. 127,684, ?led by Charles H.
5 Beiderbecke, February 25, 1937.
'
The above ‘application describes a continuous
platen.
The single ?gure of drawings shows, an ele
vation of the left-hand end of a carriage similar ~
to the one described in the above application.
The platen I is rotatably mounted in‘arms,
billing machine comprising the combination of a like 2, which are pivoted at 3 in plates 4 secured
powér operated typewriter with a liftable platen to the side plates 5 of the carriage. The side
and a forms carrier adapted to handle a pack i plates 5 are integrally joined by means of a chan
lo vof continuous forms, whether fanfolded or in the nel-shaped member 6 which is secured to the 10
plates 5 in any desirable manner, preferably by
form of superposed webs.
‘
It is customary to actuate the feed rolls which welding, brazing, or soldering. , The member 6
cooperate with the platen to feed work sheets has grooves formed therein which confront simin .
around the platen into engagement with the lar grooves in the usual carriage supporting rails
[5 platen by means of fairly stiff springs in order-to 1 of the typewriter, which grooves serve as race- 15
ensure that the work sheets to be typed upon will ways for anti-friction roller assemblies 8 of well
bev ?rmly grasped by the platen and fed evenly.
In the "billing machine described in the above
appllcation,'when the platen is raised, the feed
rollers are permitted to follow the movement of
the platen for a short distance until stopped by
suitable limiting means. When the platen is
lowered to normal position, the spring which
- holds the feed rollers in contact with the platen
offers a considerable resistance to downward
movement of the platen with the result that it
requires quite a little effort to ?rmly seat the
, platen in its home position and it sometimes hap
known form. The usual carriage-release lever 9
pivoted at H) is provided at each end of the platen
and actuates a bail II which cooperates with a
.lug i2 formed in a leverthe function of which 20
is to release the usual escapement pawls to per"
mit the carriage to be moved by. hand to any
desired position.
Thearms 2 are integrally Joined by means of a
tube l3 through which passes a rod II to the 25 .
ends of which are secured three-armed latch le
vers i5. Loosely pivotedon one end ‘of the rod
It is a platen lifting lever it having a pin lGa
pens that, owing to this opposing force o?’ered cooperating with one arm of one of the latch
30 by the feed rolleroperating spring or springs, the members l5. One arm of each latch lever i 5 30
platen does not become ?rmly seated at both ends, _ is formed with a hook-shaped portion l5a which
engages a lug Ila formed in an adjustable plate
if at' all.
'
The present application is directed towards _l'| secured to plate 5, there being one such plate A
‘ the provision of means for overcoming the above I‘! at each end of the platen. Normally, the hook
35 di?iculty which, aside from the extra effort and shaped portions I5a engage the lugs i‘lato hold 35
other troubles incidental to overcoming of the the platen in loweredor‘ writing position, springs
l8 connected to the hook-shaped portions I51:
force of the spring mentioned, there is sometimes and
to pins carried by the arm 2 holding the
a tendency for the forms to shift relative to each
latches in engagement with the lugs Ila, the
--'other due to uneven engagement with the feed platen
is kept ?rmly seated in its normal po- 40
l0 rollers. Thisis due to the fact that the feed roll
sition.However, there need be provided only
er assembly is usually centrally pivotally support
one lever i6 which is preferably located at the
v ed and operated bya single spring to secure uni
left-hand end of the platen.
formity of pressure of the feed rollers upon the
The numerals l9 and 20 designate the usual
_ work sheet wrapped around the platen which feed rollers which cooperate with the platen to 45
‘'1 pivotal mounting permits the feed roller assem
feed the work sheets. These feed rollers are
bly to tilt more or less to right or left when the mounted upon shafts carried by a paper de?ector
platen is raised.
.
'
_
.
frame 2i which supports the paper deflector 22.
According to the present invention, means is Pivotally mounted in the plates 5 vin front of
, provided to control the movement of the feed and below the platen I is a rod 23. Near the 50
rollers whereby they are not permitted to engage mid-point of this rod 23 there is secured an arm’
the work sheets until the platen reaches its home _ 24 having a bend near its mid-point in which
position, yet, after the platen has, ?nally reached rests a rod 240 extending parallel with the platen
its home position the feed rollers are left free and forming part of the paper de?ector and
55 to respond to their operating spring or springs feed roller assembly. A plunger 25 is loosely -,
2
,
2,185,948
guided at its lower end by a. hole in a bushing 25a _ been raised far enough for nose 34a to snap over
I screwed into a hole in the member 6 and at its
upper end is socketed in a hole in the arm 24.
nose 36a.
‘
'
socketed by a shoulder in the upper end of ‘plung
er 25 and by the bushing 25a. Spring 26 presses
When the platen is fully elevated, the arms 2
are engaged by step lugs 4a formed in the plates
4. The weight of the platen and the other parts
carried by the- arms 2 is ‘counterbalanced by
the arm 24a upwardly whereby the feed rollers
l9 and 20 are pressed ?rmly against the platen.
Normally, when the platen is raised, the spring
means of torsion springs 31 which are hooked
around the edges of frames 4 and the edges of the
arms 24, these springs also serving to hold the,
A spring 26 loosely coiled around plunger 25 is
10 26, which must be fairly heavy to lift the paper , platen in elevated position. The spring 31 is not, 10
de?ector assembly with su?icient ‘force to grip
however, strong enough to raise the platen to the
the work sheets ?rmly, will cause the paper de
?ector and feed roller assembly to follow the
to relievetheppera/tor of most of the weight of
platen in its raising movement for a short dis
15 tance and obviously this spring must be com
pressed in lowering the platen.
In'order to relieve the operator of the addi
go.
tional work incidental to compressing the spring
during the last part of the movement of the
platen to its home position mechanism is provid
ed to cause this compression of the spring to
take place gradually throughout a major portion
of the downward movement of the platen; that
is, to spread the work of moving the paper de
25 ?ector and feed roller assembly downwardly over
a longer period of time and accomplish it by
levers whose mechanical advantage is one of force
rather than speed.
Pivoted at 28 on the side, of the arm 2 at the
30 left-hand end of'the carriage is a, double-armed
latch lever 29 having one arm thereof engageable
with the lug Ila and normally held in contact
therewith by means of a spring 30 anchored to
the other arm of lever 29 and to the same pin
35 which anchors the spring I8 to the arm 2. The
three-armed latch lever I5 is provided with a
latch arm I5b adapted to cooperate‘with a latch
ing lug 29a formed in the lever 29. Normally,
however, the lug 29a is clear of the end of latch
40 arm I5b. 'Pivoted at 3| to the arm, 2 is a relatively
long curved lever 32 connected by a spring 33 to
fully elevated, position unaided, but merely serves. -
the platen and other parts supported .by the
arm 2.
‘
v
15
_ As the platen rises from the position shown in
the drawing, the spring 30, holding the lower arm '
of lever 29 in engagement with lever Ila, gradu
ally moves the upper arm \29a against the edge
of the latching arm I5b whereby, when the hook 20
portion I5a becomes fully disengaged from the
lug Ila, the lug 29a engages the'arm I5b and
eventually snaps over said arm to hold the latch
ing member I5 in the unlatched position. During
the initial part of the movement of the platen to
the elevated position, the feed rollers I9 and 2l)_
_follow
theofplaten
for impart
a shorgdistance
as 26a with
con
sequence
the force
d by spring
the result that the nose 36a is moved upwardly,
sliding along the. edge of arm 34. However, as
the platen completes its movement, the arm 34
will be drawn upwardly, causing its nose 34a to
travel in an arc and eventually the nose 340. will
pass the nose 36a and will snap over the end of
lever 36. With the platen in fully elevated posi
tion, the latch lever 29 will be holding the latch
lever I5 in disengaged position while the lever 34
will have reengaged the pin 32b and the nose 34a ,
now will occupy a position directly above the nose
36a in the end of lever 36. As the platen descends, 40
the nose 34a will press down upon the nose 36a
and gradually force the arm 36' downwardly,
a pin carried by the arm 2. The lever 32 has a
pin
I5‘whereby,
32a in thewhen
planethe
of latch
one arm
member
oi’ thel5is
latchrocked
lever ' thereby causing the feed rollers’ I9, 20 and paper
de?ector 22 to move downwardly as the platen
45 counterclockwise, the lever 32 will be similarly
rocked by coaction of the pin 32a with the latch
lever I5.
The lever 32 has a second pin 32b on the op-~
posite side of the pivot 3| of the pin 32a. This
'50 pin 32b is connected by a spring 33 to a pin car
ried'by an arm 34 also pivoted at 3I, the spring
32 normally holding the arm 34 in engagement
with pin 32b. A. pair of shroud plates 35 is
riveted on opposite sides of the arm 34, which
55 plates serve as guides for the free end of a lever
.36 which is secured to the rod 23. The arm 36
' has a nose 36a opposite a similarly shaped nose
34a formed on the arm 34, and the latter is
slightly thicker than the arm 36 whereby both the
60 arms 34 and 36 can move freely about their pivots.
When the platen is to be raised to permit the
straightening _.of ‘a pack of forms with inter
spersed carbon sheets for the purpose of shift
ing the carbon ‘sheets, the lever I6 is grasped by
65 the operator’s left hand and, raised sumciently to
cause the pins Ilia to operate the latch levers I5
at both ends of the carriage and disengage them.
from the lugs Ila. While the arm I6 is being
raised in this fashion, the pin 32a is also pushed
descends, but considerably more slowly, owing to
the ratios between the levers. Eventually lug Ila
will engage the lower arm of latch vlever 29 and
gradually disengage the lug 29a from the latch
arm I5b. When the platen reaches‘its normal
position, the hook-shaped portion I5a will snap 60
under the lug Ila and allow the arm 32 to be
come restored to its normal position, thereby
permitting lever 32 to rock clockwise to free the
nose 34a from the nose 36a and permitting the '
arm 36 to move upwardly a slight amount. Since 55
the nose 34a is slightly lower than the nose 36a,
the lever 36 is alwayspushed downwardly slightly
below its normal position from which it will be
seen that the feed rollers do not actually exert -
pressure against the platen until it is in its home 60
position.
‘
,
It will be noted that the radial distance from
the center of rod 23 to the center of 'rod 24a is
approximately one-?fth theradial distance from
rod 23 to the nose 36a. Similarly, the radial
distance between the nose 34a and the center of
pivot 3 for the arms 32 is very much smaller than
the radial distance from the pivot 3 to the end
of lever l6. It is clear, therefore, that the force
70 upwardly by the lever I5, thereby rocking lever which must be' exerted by the operator to de 70
32 counterclockwise. This causes the nose 34a to press the paper de?ector and feed rollers is so
move to the right until'it engages the nose 36a small as to be virtually negligible. ‘ Thus, instead
after a small amount of movement of the lever ‘of applying a relatively strong force practically.
32 and thereafter further movement of the arm ~ directly to the platen during the‘ last stages of
75 34 to the right is stopped until the platen has
its movement to homeposition to overcome the
‘
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7
2,185,948
3
‘pressure of spring 25, the present invention pro
whereby the platen may be displaced from a writ
‘ vides a means whereby a negligible force is ap
ing position to a non-writing position, means co
operating with the platen when in its ‘writing
major portion of the movement of vthe platen to position to hold work sheets against the platen,
its home position. It will be seen, therefore, that means to engage the holding means with the 5
plied with a high leverage ratio throughout a
practically no effort is required to raise or lower
the platen since the weight of the platen and the
_ parts carried by the arms is'very nearly counter
10
balanced by the springs 31.
.
_
_
While there has been shown and described and
pointed out the fundamental novel features of
the invention as applied to a single embodiment
- it will be understood that various omissions and
platen and tending to cause the holding means to-v
follow the platen in its movement to non-writing
position, an arm pivotally mounted in the car
riage and having a connection to operate the
holding means, and means carried by one of the 10
arms which support the platen and engaging the
second named" arm for moving the holding means
back toward their normal position while the
substitutions. and'changes in the form and de- y platen is being restored to writing position._
6. In a continuous billing machine, the combi 15
15 tails of the device illustrated and in its operation
may be made by those skilled in the art without nation of a carriage, a‘ platen, and means for.
departing from the spirit of the invention. It is movably mounting the platen in the ‘carriage
whereby the platen may be displaced from a writ
the intention, therefore, to be limited only as in
ing position to a non-“writing position including a '
dicated by the scope oi.‘ the.following claims.
pair of arms pivotally mounted in the carriage 20
What is claimed is:
.
and rotatably supporting the platen, means to
1. In a continuous billing machine, the com
latch the platen in its writing position,- a lever
bination of a displaceable platen, feed rollers co
operating with the platen to feed work sheets, for releasingsaid latch means, feed rollers mov
means to press the feed rollers against the platen ably mounted in the'carriage, means to actuate
and tending to cause the feed rollers to follow . the feed rollers into engagement with the platen
the platen in its‘ displacing movement,- and means ‘ to grip a work sheet between the platenand the
to move the feed rollers back toward'their normal vfeed ‘rollers, said actuating means causing the
position in advance of the restoration of the feed rollers to follow the movement‘ot the platen
platen from a displacedvposition to its normal from its writing to non-writing positions, means
having a connection to the feed rollers for re
position.
"
_
storing the feed rollers, means carried by one of
2. In a continuous billing machine the combi
the arms and engageable with the restoring
nation of a platen movable ,from a writing posi
, tion to release forms wrapped around theplaten, means whereby the restoration oi' the platen to its
feed rollers cooperating with the-platen when in writing position causes the restoration of the
its writing position to feed said forms, means tov feed rollers, and means operated by said lever for 35
engage the feed rollers with the platen, said rendering the means onsaid arm effective.
7. In a continuous billing machine, the com
means tending to cause the feed rollers to follow- '
the platen in its movement away from writingv bination of a carriage, a platen movably mounted
position; and means responsive to restoration of in the ‘carriage whereby the platen may be dis
the platen to writing position for moving the feed . placed: from a writing to a non-writing position, 40
means to latch the platen in its writing position,
rollers back toward their normal position in ad
vance of the platen.
,
,
‘
platen}
a carriage, means to movably mount the platen
3. In a continuous billing machine, a
45 in the carriage vwhereby the platen may be dis
placed from a writing to a non-writing position,
feed rollers mounted on the carriage and coop-
erating with the platen when the latter is in writ
a release lever for the latching means, means to
lock the latching means- in unlatched position
while the platen is being displaced from a writing ,
to a non-writing position, and means carried by is
the carriage for releasing the latching means
when the platen reaches its. writing position.
'1 8. In acontinuous billing machine, the combi
ing positionto feed work sheets, means urging the i nation of a carriage, a platen, and means to mov
ably mount the platen in the carriage
whereby 60
_
50 feed rollers into engagement with the platen ~ ,
whereby the feed rollersfollow movement of .the . the platen may be displaced from a writing to a
platen to non-writing position when the platen
non-writing position-including a pair of arms
pivotally mounted in the carriage,v means carried
by said arms and cooperating with part. of the
{carriage
for latching the platen in its writing"
toward their normal position in advance of the
is displaced, and means operated by the ?rst
-named means for moving the feed rollers back
65
position, a lever for'releasing the latching means '
' platen.
4. In a continuous billing machine, the combi
nation of a carriage, a platen, means‘ to movably
mount the platen in the carriage whereby the
60 platen may be moved _from a writing to-a 'non-'
writing position including an arm rockably
to permit displacing the platen to non-writing. _ '
position, and means to lock the latching means
in disengaged position, said locking means'being 601
disengaged by cooperation with a part of the car
riage whereby‘ the latching means is released‘
- mounted inthe 'carriage,‘sheet gripping means ' only when the platen reaches its'writing position.
cooperating with the platen whenv in its writing
9. In a continuous billing machine, the combi
position for pressing work sheets against the ' nation
of. a carriage,'a platen, means to movably 65
platen, means to engage the sheet gripping, means
‘ with ‘the platen whereby the sheet gripping means
tends to' follow the platen in its movements to
‘ the non-writing‘ position, and means operated by
support the platen in-the carriage whereby the »
latter may be displaced from a writing to a non-‘l
writing position, feed rollers movably mounted in
said arm when the platen is restored for moving the carriage, means to engage saidfeed rolls with
the platen while it is in its writing position, said 70
mal position in advance of the restoration of the means ,tendingto cause the feed rollers to follow
the movements of the platen to non-writing posi
tion, and means connected to the ?rst named ‘
5. In a continuous billing machine, the combi
nation of a carriage, a platen, a pair of movable means for operating the feed ‘rollers when the
the sheet gripping means back toward their nor
platen.
>
.
’
75 armsior supporting the platen in the carriage
platen is restored to its writing position whereby
4-
2,185,948
' the feed rollers move in the same direction as the
platen during its restoring movement.
'
'
for resiliently engaging the gripping means with
the platen and tending to cause the gripping
means to follow the platen in its movement to
ward ‘inoperative position, and means intercon
necting both mounting means for moving the 5
10. In a continuous, billing machine, the com
bination of a carriage, and' a platen movably
5 mounted in the carriage so as to be displaceable
from a writing to a non-writing position, feed gripping means in the same direction as the
rollers cooperating with the platen, means for platen a predetermined extentwhen the platen is
causing the feed rollers to follow the platen in its
movements from a writing to a non-writing posi-'
10 tion, and means responsive to movement to the
restored to operative position.
,
, 15. In a machine of the class described, a
platen to its writing positionfor moving the feed.
platen, means to mount the platen for move- 10
ment from an operative to an [imperative posi
rollers a greater extent toward writing position
than said feed rollers move when the platen is
tion, means cooperating with the platen to ‘grip
displaced to non-writing position whereby the
a work sheet when the platen is in its operative
position; means to movably ‘mount the gripping
15 platen is restored to a writing position before the means whereby the latter follows the platen 15
feed rollers reengage the platen.
during a portion 01’ the movement of the platen
11. In a continuous billing machine, the combi to inoperative position, means operated by the
nation of a carriage, and a platen movably platen mounting means for restoring the grip
mounted in the carriage for displacement from ping means while the platen is being restored to
20 a writing to a non-writing position, feed rollers
cooperating with the platen, means for causing
the feed rollers to follow the movement of the
platen from writing to non-writing positions, '
means responsive‘to movement 01' the platen to
25 writing position for restoring the feed rollers to
operative position, and means to disable the re- 20
storing means when the platen reaches its oper
ative position.
-
'
16. In a continuous billing machine the com‘
bination with a carriage; feed rollers mounted
in the carriage, a platen, means to movably 25
and beyond their normal position and in advance mount the platenwin the carriage for displace
of the platen, and means to cause the feed rollers I ment to andfrom a non-writing position, means
' to reengage the platen when the platen reaches to urge the feed rollers into engagement with
its writing position. _
80
_
12. In a continuous billing machine, the com
bination of a carriage and a platen displaceably
mounted in the carriage so as tobe movable from
a writing to a non-writing position, means coop
erating with the platen to grip a work sheet when
said ‘platen-,when' it, is in writing position, said
platen. when displaced to its non-writing posi— 30
tion becoming separated from the feed rollers
to provide a space between said rollers and the
platen whereby a record sheet gripped between
the‘ platen and feed rollers‘ may be straightened,
85 the platen is in its normal position, means to - said feed rollers when the platen is displaced to
engage the gripping means with the platen, said
non-writing position following the movement
_ engaging means tending to cause the gripping
of the platen ‘a limited vextent, and means re
sponsive to movement of the platen toward
.a writing to non-writing position, and means re
writing position for preventing re-engagement
40 sponsive to movement of the platen'to its non- , oi’ the feed rollers with the platen until the to
writing position for preventing reengagement of platen reaches its writing position.
.
the gripping means with» the platen until the ~
17. In a continuous billing machine the com
platen reaches its writing position.
bination of. a carriage and a platen movably
" 13. In a continuous billing machine,‘ the com
mounted in the carriage whereby the platen may
'45 bination of a platen, means to movably mountjthe .be displaced‘ from a writing to a non-writing 45
platen for movement from a writing position to a position,‘ said rollers being movably mounted in
non-,writing position including a pair of arms, the carriage -and.cooperating with the platen
means, carried by said arms‘for latching the - when it is‘in its writing position to feed record
platen ‘in its writing position, a lever carried by sheets, said platen when ‘displaced to non-writ
means to follow the platen in its movement from
50 one of said arms for ?rst releasingsaid latches
I and thereafter moving the platen to non-writing
position, feed rollers cooperating with the platen
when it isin its writing position to feed a work
ing position becoming separated from said feed 50
rollers to permit a record sheet wrapped‘around
the platen to become ?attened, means for‘ caus
ing the feed rollers to follow the movement of
sheet, means to urge the feed rollers into engage
the platen to the non-writing position a limited
55 ment with'the platen and tending to cause the extent, and-means responsive to ‘movement of 55
feed rollers to follow the movement of the platen _ the platen to its writing position to prevent re
a limited extent when the platen is displaced to engagement or the feed rollers with the platen
an unwriting position, feed roller operating arm .until the platen reaches its typing position.
'
having a connection to the feed rollers for
18. In a typewriting machine the combina-_.
. 60 restoring the feed rollers when the platen is tion 01' a platen, feed rollers cooperating with 00
I _ restored to writing position, a member carried by
the platen to feed’ a work sheet wrapped around
one of the platen supporting arms and engage
the platen, means to movably mount the platen
able with the feed roller operating'arm where y _ to permit separation of the platen i'rom the feed
the latter 'is operated to restore the feed rollers , rollers to permit a. work sheet wrapped around
65 when the platen is restored to its writing position, the platen to become ?attened,’ means urging “5
and means operated by said lever for moving said
teed rollers into engagement with ‘the platen
member into engagement with the feed roller 1 “said
whereby the work sheet is resiliently gripped ‘Y
operating arm.
.
" '
14. In a machine '01’ the class described, a
70 platen, means cooperating with the platen to grip
_ a work sheet, means to movably mount the platen
whereby it may be displaced from .an operative
position to an inoperative position, means to
movably mount the gripping means, means coop
75 crating with the second-named mounting means
between the platen and. the feed rollers, said '
urging means being operative when the platen 70
is separated from the feed rollers to cause the J
feed rollers to follow the movement of the platen , '
to a limited extent before actual separation.
takes place, and means operative, upon the ‘re;
storation oi the platen for preventing ‘the en- 75
2,185,948
gagement of the feed rollers with the platen.
until the latter reaches its initial position.
5 .
place the platen away from the feed rollers, and
means controlled by the displacing means for
19. In a typewriting machine, a platen, means ' causing the feed rollers to remain separated
to press a work sheet against the platen whereby from the platen until the platen reaches its
rotation of the platen feeds the work sheet; initial position.
22. In a machine of the class described, the
means to move the platen away from the press
combination of a pair of coacting feed rollers,
ing means to provide a space to permit ?atten
ing of the work sheet,, said pressing means,
when the platen is moved, tending to follow the
manual means for displacing one of said feed
ment actuated by movement‘oi! the platen to
‘ roller tends to follow the movement of the ?rst
rollers away from the other to permit a work
movementv of the .platen for a portion of its sheet therebetween to be manipulated, means 10
movement; and means to restore the pressing to urge the second feed roller into'engagement
means to its normal position, including an ele - with the other whereby the second-named feed
ward the pressing means for preventing the re
engagement of the platen with the pressing
means‘ until the platen has reached its initial
position.
-
-
20. In a machine of the kclass described, a pair
of coacting feed rollers for feeding a work sheet,
_ means to movably mount one‘oi said feed'roll
ers for displacement away from the other feed
roller to provide a space for manipulating the
work‘ sheet, means to movably mount the other
feed roller, means to resiliently urge the other
teed roller into engagement with the first feed
roller to grip the sheet. said second-named teed
feed roller when displaced, means to limit such‘
movement to permit said feed rollers to become 15
separated, and-means controlled by the displac
ing means for causing said rollers to remain in
separated position when the ?rst-named feed
roller is restored to its initial position, said last
named means being effective when the ?rst 20
named feed roller reaches its initial position to
permit the second-named feed roller to re-en
gage the ?rst-named feed roller.
23. In a continuous billing machine,~the com
bination of a carriage, a platen, a pair of platen 25
displacing arms‘ pivotally mounted in the car
roller tending to follow the ‘movement of the
?rst feed roller when the latter is displaced,
means to limit such movement of the second
feed roller whereby the ?rst feed roller becomes
separated from the second feed roller when the
?rst feed roller is displaced, means for displac
ing the feed roller, and means controlled by the
riage and‘ operable to displace the platen from _
roller until the latter reaches its initial position.
rollers, and operating means connected' to one
of said ?rst named arms and engageable with
the control arm to control the ‘engagement oi’
the feed rollers with the platen, said operating
means‘ being operative, when the platen is re
stored to writing, position, to'impart to the feed
‘rollers, through the ‘control arm therefor, a
component oi’ movement away from the platen
to maintain the feed rollers outot engagement
with the platen until the latter reaches its writ- /
a writing to a non-writing position, feed rollers
mounted in the carriage and cooperating with
they platen to~grip a work sheet, means to re 30
siliently urge the feed rollers into engagement
with the platen and tending to move the feed
‘rollers in the same direction as the platen when ‘
displacing means for causing the second feed - displaced, a control arm pivotally mounted in
roller to remain separated from the ?rst teed the carriage and having a connection to the feed 35
21. In a machine 01' the class described, va
platen, a paper-de?ector including a series of
feed rollers in engagement with the platen,
means to movably mount the platen to permit
same to -be disengaged from the feed rollers,
means to engage the feed rollers with the platen
whereby said feed rollers tend to follow the
movement oi?the platen when the latter is dis
engaged irom the feed rollers, means to limit
suchvmovement to enable the platen to become‘
separated‘i’rom the teedrollers, means to dis
~ ing position.
/
Joan r... em
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