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Патент USA US3028121

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April 3, 1962
G. GELOSO ETAL
3,028,111
DEVICE FOR THE BAND OR WIRE DRIVE CONTROL
IN MAGNETIC RECORDERS OR THE LIKE
Filed Nov. 3, 1958
s Sheets-Sheet 1
FIG. 1
‘Us._
22
43
INVENTORJ
BY
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April 3, 1962
G. GELOSO ETAL
3,028,111
DEVICE FOR THE BAND OR WIRE DRIVE CONTROL
IN MAGNETIC RECORDERS OR THE LIKE
Filed Nov. 3, 1958
5 sheet?sheet 2
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INVENTORY
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April 3, 1962
cs. GELOSO ETAL
3,028,111
DEVICE FOR THE BAND 0R WIRE DRIVE CONTROL
IN MAGNETIC RECORDERS OR THE LIKE
Filed Nov. 5, 1958
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INVENTORS
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3,028,111
United States Patent
Patented Apr. 3, 1962
2
1
3,028,111
I
DEVICE FOR THE BAND 0R WIRE DRIVE CON
TROL IN MAGNETIC RECORDERS OR THE LIKE
Giovanni Geloso, Viale Brenta 29, and Amiga Castelli,
Aeroporto Forlanini, both of Milan, Italy
‘Filed Nov. 3, 1958, Ser. No. 771,270
Claims priority, application "Italy Feb. 9, 1956
13 Claims. (Cl. 242-5512)
in turn frictionally vdrives a fly wheel 8, the periphery
of this ?y wheel being in frictional contact with the roll 6.
The roll 4 is driven by the ?y wheel shaft 9 through a
belt 10, the shaft '9 ?xedly carrying a suitable pulley
which cooperates with the belt 10, and the roll 4 itself
being in the form of a pulley, as clearly shown in FIG. 5.
The ?y wheel 8 is ?xed to the shaft 9 which is turnably
supported by the plate A for ‘free rotation about its axis
through any suitable bearing arrangement.
The directions of rotation of the parts 5, 6, 8 and 4 are
The present invention relates to a device for the con 10
indicated by the arroows B, C, D, E, respectively.
trol of band or wire magnetic recorders and the like.
The shaft 9 has a portion extending above the pulley
This application is a continuation in part of copending
which cooperates with the belt 10, and this latter portion
application Serial No. 637,926, ?led ‘February 4, 1957,
of the shaft 9 constitutes one feed roller. The feed of
and now abandoned and entitled “Device for the Band
or Wire Drive Control in Magnetic Recorders or the 15 the tape (or wire) at normal speed results from the fric
tional cooperation between the feed roller shaft 9 and the
Like.”
freely turnable feed roller 11 which acts as a loose pres
One of the objects of the present invention is to pro
sure roll. The band (or wire) passes and is nipped be
vide in a magnetic recorder ‘a device which, when actuated
tween the rolls 9 and 11, the loose roll 11 turning freely
by the operator, will provide ?rst a stopping of the feed
ing of the tape or wire, then movement of friction pads 20 in the direction of arrow F (FIG. 1). This roll 11 is
freely turnable on a shaft 12 which is carried by a lever
away from the recording head, and ?nally rewinding of
13 described below.
Between the roll 4 and the take-up spool there is a
friction clutch arrangement shown in FIG. '5 and de
a magnetic rewrder with an additional control which,
when actuated by the operator, will sequentially provide 25 scribed below, and this friction clutch arrangement com
pensates for speed di?erences between the roll 4 and the
a stopping of the‘feed, a‘ quick feed, and then rewinding
the tape or wire.
Another object of the present invention is to provide
of the tape or wire.
The invention is substantially characterized by the
fact that it comprises a maneuvering oscillating lever de
signed to operate upon the feeding means at the normal
speed of the‘magnetic band (‘or wire) inlsuch a manner
that in one lever position there is obtained the separation
take-up spool.
The lever 13 which ?xedly carries the shaft 12 on which
the feed roll 11 is freely turnable is supported by a pivot
pin 14 for turning movement about the axis of this pin
14, the latter being ?xedly carried by and extending ver
tically ‘from the plate A of the frame. The lever 13 is
provided with an extension 13’ which is also turnable on
of the feeding rolls and therefore the instantaneous stop
the pivot 14, and the lever 13‘ has an elongated arcua-te
of the band (or wire) and in another position ‘both the
separation of the feed rolls and the moving of the record 35 slot 17 through which a screw 16 passes into threaded en
gagement with the extension 13', so that a limited angular
ing head pads away from the recording head and there
adjustment between the lever portion 13 and 13' is pro
after the quick band (‘or wire) feeding by means of the
vided in this way. A spring 15 is hooked at ‘one end onto
‘winding up roll.
the plate A and at its opposite end to a pin ?xed to the
The novel‘features which are considered as character
istic for the invention are set forth in particular'in the 40 lever 13', so that the lever 13, 13' is urged by the spring
15 to turn around the pivot pin 14 in a clockwise direc
appended claims. The invention itself, however, both as
tion, as viewed in FIG. 1, and thus the spring 15 urges
to its construction and its method of operation, together
the roll 11 toward the shaft 9.
with additional objects ‘and advantages thereof, will be
best understood from the following description of speci?c 45 A rigid plate 22 is ?xedly carried by and spaced over
the plate A in parallel relation thereto, any suitable pins
embodiments When read in connection with the accom
or the like ?xing the plate 22 to the plate A in spaced
panying drawings, in which:
FIG. 1 is a fragmentary plan view of one embodiment
of a magnetic recorder according to the present inven
tion;
parallel relation thereover, and it will be seen from ‘FIG.
1 that the lever 13 extends between the plates A and
22, while the shaft 9‘ extends upwardly through the plate
50
22 to be located in engagement with the feed roller 11;.
FIG. 2 is a perspective view of a pair‘ of pad‘ carrying
The belt 10 and the pulley which is ?xed to the shaft 9
levers forming part of the structure of FIG. 1;
extend beneath the plate 22, while the feed roll 11
FIG. 3 is a fragmentary sectional view taken along line
extends over the plate 22» into frictional engagement with
3—-—3 of \FIG. l'in the direction of the arrows;
FIG. 4 is a fragmentary sectional view taken along line 55 the portion of the shaft 9‘ which extends above the plate
22. This plate 22 ?xedly carries a pair of parallel pivot
4—4 of vFIG. 1 in the direction the arrows; and
pins 249 and 2d’, and these pivot pins pivotaliy support a
FIG. 5 is a fragmentary sectional view taken along
pair of levers 19 and 19’, respectively, which are shown
line 5—~5 of FIG. 1 in the direction of the ‘arrows.
most clearly in FIG. 2. As is evident from FIG. 2, the
The upper horizontal plate A of the frame of the de
levers 19 and 19’ cross over each other and respectively
vice is shown in FIG. 1. The plate‘A carries a pair of
60
‘stationary shafts'l and 2 on which loose rolls 3 and 4
carry the pads 18 and 18’. A pair of unillustrated springs
are freely turnable, respectively. Roll '3 supports a sup—
act on the levers 19 and 19’, respectively, to urge the
ply spool SS and roll v4 a take-up spool ‘TS, which spools
pads or pressure means 13 and 13’ against the recording
are indicated in‘ dash-dotted lines in ‘FIG. 1. Actually,
head RH, schematically indicated in dash-dotted lines,
so as to provide the braking action, the magnetic band
the roll 4 is in the form of a pulley, as described below,
65
passing between the pads and the recording head. The
and acts through a frictionclutch also described below
lever 19.’ has a portion ‘23' provided with a downwardly
in connection with FIG. 5 ‘on the take-up spool.
extending tooth 53 which passes downwardly through an
An unillustra-ted electric driving inotor has its shaft 5
aperture 23 formed in the plate 22, this tooth 53‘ being
(-FIG. 1) pressing frictionally against a periphery of a
loose roll =6 supported for free turning movement by the 70 located beside the lever 13, as is shown most clearly in
FIG. 3. It will be noted from FIG. 2 that the lever
stationary shaft '7 carried by ‘the plate 'A. This roll '6
19’ has a shoulder-54 directed toward the lever 19, so
which is thus driven by the shaft'5 'olf'the electric motor
3,028,111
3
4
that when the lever 19' is turned in a clockwise direc
tion, so that the pad 18' approaches the viewer of FIG. 2,
the shoulder 54 will engage the lever 1g to turn the latter
in a counter clockwise direction, and in this way the pads
movement by a pivot pin 34 ?xed to and extending up
wardly from the plate A so that the lever 33- is supported
intermediate its ends for turning movement about the
pivot pin 34. The rod 31 ?xedly carries a collar 51
18 and 18' will simultaneously be moved away from the
recording head upon such turning of the lever 19’. As
which abuts against the ear 52 in the position of the parts
will be pointed out below, when the lever 13 turns in a
counter clockwise direction, as viewed in PiG. 1, around
the pivot pin 14, this lever 13 will engage the'tooth 53
the collar 51 a coil spring 32 is coiled around the rod 31,
this coil spring pressing with one of its ends against the
shown in FIG. 1, and on the side of the ear 52 opposite
car 52 and with its opposite end against a collar or snap
so as to turn both of the levers 19 and 19’ in the manner 10 ring ?xedly carried by the rod 31 at its end distant from
the ear 50.
described above, and in this way both of the pads 18 and
This lever 33‘ is pivotally connected by a pivot pin
18' are moved simultaneously away from the recording
35 with a lever 36 which is turnably connected with the
head.
roll 37 at the center thereof, this roll 37 being carried
The end of the extension v13' which is distant from
the pivot pin 14 is provided with a downwardly extend 15 by the lever 36 over the roll 6 as well as over a portion
of the lever 33 in the position of the parts shown in
ing projection 24 extending downwardly through an aper
FIG. 1. A wire spring 38 is wound around the pivot pin
ture 25 in the plate A. This structure is shown most
35, presses with one end against the pivot pin 34-, and with
clearly in FIG. 4. Thus, as may be seen in FIG. 4, the
its opposite end against a pin ?xedly carried by the lever
projection 24 is provided on its right side, as viewed in
FIG. 4, with an inclined edge which cooperates with a 20 36, so that this spring 38 urges the lever 36 in a counter
clockwise direction, as indicated by the arrow M, shown
roller 26 supported for free turning movement by an arm
in FIG. 1, and the spring 38 also cooperates with the
of a rectangular frame 27. This rigid rectangular frame
lever 33 to urge the latter in the direction of the arrow
‘27 is located just beneath and spaced from the plate A,
L shown in FIG. 1. This roll 37 is thus maintained in
and it is interconnected with the plate A by a pair of
leaf springs 28 which are respectively ?xed at their left 25 frictional engagement with the roll 3 which turns in the
direction of the arrow N, and in the position of the parts
ends to the underside of the plate A and which are re
shown in FIG. 1 the roll 37 turns freely in the direction
spectively ?xed at their right ends to the underside of the
of the arrow P.
left arm of the rectangular frame 27. These springs 28
Thus, when the lever 13 is turned in a counterclockwise
urge the frame 27 upwardly about a substantially hori
zontal axis located adjacent the left side of the frame 30 direction, as viewed in FIG. 1, about pivot pin 14 in the
manner described above, the car 50 will pull on the rod
27, as viewed in FIG. 1. Thus, when this frame 27 is
31 so as to compress the spring 32, and the result is that
turned downwardly in a manner described below, the
the lever 33 turns in the direction opposite to the arrow
roller 26 will engage the inclined right edge of the projec
tion 24, as viewed in FIG. 4, to turn the lever 13, 13’
in a counter clockwise direction, as viewed in FIG. 1,
L so that the roll 37 is moved into the gap between the
rolls 3 and 39. This roll 39 is ?xed to the roll 6 for turn
around the pivot pin 14 against the force of the spring
ing movement therewith, and the diameter of the roll 37 is
longer than the distance between the rolls 3 and 39, so
At the right side of the frame 27, as viewed in FIG. 1, ‘ .that when the lever 13 has been turned through a suf?
cient distance the roll 37 will be pressed against the rolls
is located a push button 36 guided in any suitable bear
ing carried by the plate A for vertical movement and hav 40 3 and 39, and in this way the direction of rotation of the
roll 3 will be reversed so that it turns in a direction op
ing a portion located beneath the frame A and ?xedly
posite to the arrow N,~and in this way the tape (or wire)
carrying a projection 29 which extends over a portion of
will be rewound.
the frame '27, as indicated in FIG. 1. Thus, when the
Of course, it is necessary to disconnect the drive from
operator depresses the push button 36, the frame 27 will be
turned downwardly so that the roller 26 will act on the 45 the roll 4 to the reel which is turned by the roll 4, and
this disconnection of the drive is simultaneously brought
inclined edge of the projection 24 of the extension 13’
glioGut by the structure which is shown most clearly in
to turn the lever 13, 13’ as described above, and the leaf
t
. 5.
springs 28 not only return the frame 27 to its rest posi
Referring now to FIG. 5, it will be seen that the sta
tion, but also they act through the frame 27 on the
projection 2% to maintain the button 30 in its upper rest 50 tionary shaft 2 ?xedly carries a collar 60 which supports
the pulley 4 for free rotation thereon. If desired the
position.
collar 60 may be replaced by a suitable thrust hearing.
Thus, when the operator depresses the button 30‘ the
A Washer 61 is located against the top surface of the
frame 27 will turn downwardly about a substantially hori
pulley 4, and this washer 61 is freely turnable around the
zontal axis adjacent its left side, as viewed in FIG. 1,
and the roller 26 will cooperate with element 24 to turn 55 shaft 2. A spring 62 is coiled around the shaft 2 and
presses downwardly on the washer 61, the top end of the
the lever means or common operating means 13, 13’ in a
spring 62 pressing against a plate 63 which is ?xed to the
counter clockwise direction, as viewed in FIG. 1. During
lower side of an annular channel member 64 of substan
the ?rst part of this turning movement of the lever 13,
tially U-shaped cross section, as indicated in FIG. 5. The
13’ the roll 11 moves away from the shaft 9 so that the
top surface of the annular channel member 64 is pressed
tape (or wire) is no longer nipped between the rolls 9
by the spring 62 against the underside of a plate 65 which
and 11 and the feeding of the tape by these rolls ceases.
is also freely turnable on the shaft 2 while being con
Then, during the next part of the turning of the lever 13,
strained against axial movement with respect thereto by
13’ the lever 13 engages the tooth 53 so as to act on
the collars 66 and 67 respectively ?xed to the shaft 2 and
the levers 19 and 19’ in the manner described above in
order to move the pads 13 and 18' away from the re 65 respectively engaging the upper and lower faces of the
plate 65 in the manner shown in FIG. 5. Instead of col
cording head, the levers 19 and 19’ moving in a direc
lars 66 and 67 it is possible to use suitable thrust bearings.
tion opposite from that indicated by the arrows H and
This plate 65 carries at its top face ?ns 68 which are
H’ shown in FIG. 2.
adapted to cooperate in a known way with slots in the
At the same time structure which cooperates with the
spool so as to transmit the turning movement of the plate
left free end of the lever 13, as viewed in FIG. 1, is
65 to the spool which carries the tape or wire, and this
operated by the turning of the lever 13. This structure
spool has a much larger diameter than the pulley 4. In
includes an upwardly directed car 50 ?xed to the left end
addition, an arm 69 is ?xedly carried by the rectangular
of the lever 13 as viewed in FIG. 1. A rod 31 is ?xed
frame 27, extends upwardly therefrom through an aper
to the ear 5t}, and this red 31 passes through an opening
in an car 52 of a lever 33 which is supported for turning 75 ture 40 in the plate A, and this arm 69 has a free end
15.
3,028,111
portion extending into the annular channel member 64
and rotatably supporting in the interior of the channel
14 in opposition to the spring 15. At its opposite end the
lever 41 has an end portion 46 located at the elevation
member 64 a roller 70. Thus, when the frame 27 is at
rest the roller 70 will be out of engagement with the chan
nel member 64 although located in the interior thereof, as
indicated in FIG. 5, and at this time the friction clutch
at the left endrof the lever 33 below the collar 51.
In other words the end 46 of the lever 41 is located in
the path of movement of the lower end portion of the ear
52 beneath the collar 51.
When the operator turns the lever 41 in a clockwise
direction, as viewed in FIG. 1, the end 45 of the lever 41
structure of FIG. 5 will transmit the turning movement of
the pulley 4 to the plate 65 so that a reel carried by
will ?rst ‘engage the lever 13 so as to turn the latter
the latter will turn with the plate 65. However, when
the button 30 is depressed so as to turn the frame 27 10 ?rst to a position where the roll 11 is disengaged from
the roll 9, and thus the feeding of the tape or wire stops
downwardly, the roller 70 will engage the channel member
immediately at this point. It should be noted that at
64 so as to move the latter downwardly against the force
this time the lever 13 has not been turned through a dis
of the spring 62 so as to compress the latter beyond the
tance su?icient to cause the pads 18 and 18’ to move away
position thereof shown in FIG. 5, and as a result the
channel member 64 will move out of engagement with 15 from the recording head, so that these pads frictionally
hold the tape against the recording head with a ‘force
the plate 65 and the turning ‘movement of the pulley 4
greater than that of the friction clutch as described above
will no longer‘be transmitted to the plate 65. It should
in connection with FIG. 5, so that the feeding stops im
be noted that the parts 64 and 65 cooperate as a friction
mediately. Thus, it is possible ‘to turn the lever 41
clutch also for the purpose of permitting the plate 65 to
slip with respect to the channel member 64 due to the dif 20 through a ?rst angle which will simply cause the tape
or wire to stop immediately.
ference between the angular speed of the pulley 4 and the
feed speeds of the tape provided by the elements 9 and 11.
If desired, ‘a suitable coating of friction material may be
During the second portion of the turning of the lever
13 by manual turning of the lever 41, the pads 18 and
18' will be moved away from the recording head, in the
located at the bottom side of the plate 65 and the top side
of the channel member 64.
25 above described manner. At this time the end portion
46 of the lever 41 will be located in ‘the path of move
Therefore, when the button 30 is depressed by the op
erator four operations take place, namely, the roll 11 is
ment of the lever 33, so that although the rod 31 to
moved away from the roll 9 to stop the feed of the tape
gether with the collar 51 move away from the ear 52 to
or wire, the pads 18 and 18’ are moved away from the
compress the spring 32, the lever 33 and the ear 52 can
not turn around the pivot 35 because of the engagement
between the ear 52 with the end '46 of the lever 41, and
ture shown at the left of FIG. 1 operates to place the
thus at this time the roll 11 is moved away from the roll
'roll 37 in engagement with the roll 39 as well as with
9, the pads 18 and 18' are moved away from the record
the roll 3 to reverse the direction of the rotation of the
ing head, but the roll 37 cannot move under the action
latter, and thus a quick rewinding of the tape onto the 35 of the spring 32 into engagement with the roll 39 so as
spool driven by the roll 3 takes place when the button 30
to reverse the direction of rotation of the roll 3. There
is depressed. It should be noted that the force with which
fore, at this time the take-up reel driven from the pulley
the pads 18 and 18' press the tape or wire against the
'4 continues to turn under the drive from the belt 10 and
recording head is greater than the force of the friction
through the friction clutch structure shown in FIG. 5,
clutch derived from the spring 62, so that when the roll 11 40 and thus the tape is very rapidly advanced at this time.
is moved away from the roll 9 the feeding of the tape will
The diameter of the take-up reel is so much greater than
recording head, the friction clutch structure shown in FIG.
5 disconnects the drive to the take-up reel, and the struc
stop immediately, the tape being held by the pressure of
the pads 18 and 18’ against the recording head, and the
‘channel member 64 simply slips with respect to the plate
the pulley 4 that the peripheral speed of the tape wound
onto the take-up reel is much greater than the feed speed
provided by the rolls 9 and 11, so that the tape is very
quickly advanced at this time, and in this way it is pos
65 at this time. Therefore, the drive from the pulley 4
cannot continue to feed the tape after the roll 11 is 45 sible by turning up the lever 41 to very quickly advance
the tape up to a desired extent.
moved away from the roll 9, and the disengagement of the
friction clutch of FIG. 5 takes place simultaneously with
If the lever 41 is turned further in a clockwise direc
the movement of the pads 13 and 18’ away from the
tion, as viewed in FIG. 1, beyond the position where
recording head, so that when the roll 37 transmits the
this lever 41 has its end 46 blocking the turning of the
drive from the roll 39 to the roll 3 to reverse the direction 50 lever 33, then the end 46 will move to the right, as viewed
of rotation of the latter, the tape will be unwound from
in FIG. 1 beyond the ear 52, and the spring 32 will now
the take-up reel back onto the supply reel without any
be able to turn the lever 33 so as to place the roll 37 in
resistance.
engagement with the roll 39 to reverse the direction of
It is also possible with the structure of the invention
rotation of the roll 3 so as to bring about rewinding of
to turn the lever 13, 13' in a direction opposite to the 55 the tape.
arrow G shown in FIG. 1 with a lever 41 which is shown
As may be seen from FIG. 6', the end portion 46 of
at the left of FIG. 1. This lever 41 is manually turnable
the lever 41 is at an elevation lower than the collar 51,
by the operator, and for this purpose the lever 41 has a
but the entire lever 41 is at an elevation higher than
handle 43 which is accessible to the operator. The lever
the lever 33. Therefore, while the end 46 of the lever
41 is located beneath the lever 13 between the latter and
41 is capable of engaging the car 52 to block turning of
the plate A, and it is supported for turning movement
by a pivot pin 42 ?xed to and extending upwardly from the
plate A through a suitable opening in the lever 41. A
wire spring 44 is coiled around the pivot pin 42 and
presses with one end against a pin 41' ?xedly carried by 65
the lever 41 so as to urge the lever 41 in the direction of
the lever 33, when the lever 41 is turned so as to locate
the end 46 thereof to the right of the ear 52, as viewed
in FIGS. 1 and 6, the lever 33 can turn freely beneath
the lever 41 in order to place the roll 37 in engagement
with the roll 39.
Of course, it is also necessary at this time to disengage
the arrow Q shown in FIG. 1. This wire spring 44 also
the friction clutch of FIG. 5. For this purpose the ex
bears against the pivot pin 34 as shown in FIG. 1. Thus,
tension 13' ?xedly carries a bracket 71 shown in FIGS.
when the lever 41 is in its rest position it is maintained by
1 and 5, this bracket 71 having a portion extending over
the spring 44 in the position shown in FIG. 1. At its 70 the pulley 4 and having an ear 72 which ?xedly carries a
right end the lever 41 carries an upwardly directed car 45
shaft 73 which is inclined upwardly to the left, as viewed
which ‘extends up to and slightly beyond the elevation of
in FIG. 5, and this shaft turnably supports a roller 74
the lever 13, so that when the operator turns the lever 41
restrained by suitable collars on ‘the shaft 73 from axial
in a direction opposite to the arrow Q, the Year 45 will en
movement along the shaft 73. The structure carried by
'gage the lever 13 to turn the latter around the pivot pin 75 the extension 13’ is such that when the lever '41 has been
8,028,111
7
8
turned through an angle su?icient to locate its end 46
to the right beyond the ear 52, as viewed in FIGS. 1 and
6, the lever 13, 13’ will have been turned through an
leaving said pressure means in said active position so ‘that
movement of said band or wire is stopped by pressing the
angle sufficient to place the roller 74- in engagement with
the annular channel member 64, and the inward move
moving said pressure means from said active to said in
ment of the roller 74- toward the ads of the shaft 2 causes
the channel member 64 to be depressed against the action
of the spring 62, so that in this way the friction clutch is
also disengaged by turning of the lever 41. When the
same against said recording head, for then sequentially
active position thereof, and for thereafter sequentially
moving said rewind turning means from said inactive to
said active position thereof upon operation of said com
mon moving means.
'
2. In a recorder as recited in claim 1, take-up roll?
roller 74 is in engagement with the channel member 64 10 means for supporting ‘and turning a take-up spool on to
which a tape or wire fed by said feed rolls is wound; and‘
the shaft ‘73 is located in a vertical plane which passes
second lever means cooperating with said ?rst lever means‘
radially through the axis of the shaft 2, and the distance of
for turning the latter to move said one feed roll from said
the roller 74 from the member 64 is such that the latter
active to said inactive position thereof and to move said
will not be moved away from the plate 65 until after the
end 46 of the lever 41 has moved to the right beyond the 15 pressure pads from said active to said inactive position
thereof, said second lever means cooperating with said
ear 52. Thus, when the roller 37 engages the roller 39
?rst-mentioned lever means to prevent the latter from
the friction clutch is disengaged by the structure carried
moving said rewind turning means to said active position
by the extension 13’, and the tape can be quickly rewound.
thereof, so that said take-up roll means can advance a
Summing up, with the lever 41 there are four possible
tape or wire without recording sound thereon, said sec
positions. There is the rest position shown in FIG. 1.
ond lever means being movable in a given direction from
There is also the ?rst position where the turning of the
a rest position to an operating position where said second
lever 41 simply causes the roll 11 to move away from
lever means cooperates with said ?rst-mentioned lever
the shaft 9 so as to stop the feed of the tape. Then
means, and said second lever means being turnable in
there is the second position where the end 46 of the lever
41 blocks the turning of the lever 33 while the pads 18 25 said given direction beyond said operating position thereof
to a second operating position where said second lever
and 18’ are out of engagement with the recording head,
means does not prevent said ?rst-mentioned lever means
so that the tape can be very quickly advanced. And
from moving said rewind turning means to said active
?nally there is the position where the tape is quickly
position thereof.
_
rewound. Of course, whenever the operator desires
simply to rewind the tape, then this is very easily brought 30
3. In a recorder, in combination, a pair of feed rolls
one of which is movable from an active position close to
about by depression of the button 30 to produce the above
the other feed roll to an inactive position displaced from
described operations.
said other feed roll; a pair of pressure pads movable ‘from
It will be understood that each of the elements de
an active to an inactive position; supply roll means for
scribed above, or two or more together, may also ?nd a
useful application in other types of recorders differing 35 carrying and turning a supply spool, said supply roll
means rotating in an unwinding direction during feeding
from the types described above.
of a tape or wire by said feed rolls ‘and in an oppositere
While the invention has been illustrated and described
winding direction during rewinding of the tape or wire on
to the supply spool; rewind turning means movable from
an inactive position to an active position cooperating
with said supply roll means for rotating the latter in said
parting in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully
rewinding direction; ?rst lever means cooperating with
reveal the gist of the present invention that others can
said one feed roll and said pressure pads for ?rst moving
by applying current knowledge readily adapt it for vari
said one feed roll to said inactive position thereof and
ous applications without omitting features that, from the 45 for then moving said pressure pads to said inactive posi
standpoint of prior art, fairly constitute essential charac
tion thereof; second lever means carrying said rewind
teristics ‘of the generic or speci?c aspects of this invention
turning means for moving the latter to said active position
thereof and having a portion which moves along a given
and, therefore, such adaptations should and are intended
to be comprehended within the meaning and range of
path during movement of said rewind turning means to
equivalence of the following claims.
said active position thereof; spring means operatively con
as embodied in controls for recorders, it is not intended
to be limited to the ‘details shown, since various modi?ca
tions and structural changes may be made without de
What is claimed as new and desired to be secured by
nected with said ?rst and second lever means for trans
mi-tting movement of said ?rst lever means to said second
Letters Patent is:
lever means and for delaying the movement of said rewind
1. In a magnetic recorder, in combination, a pair of
feed rolls one of which has an active position relatively
turning means to its active position until after said
close to the other feed roll to cooperate therewith for 55 pressure pads are in their inactive position; and a single
feeding a band or wire and an inactive position displaced
operating lever turnable from a rest position to a ?rst
from said other feed roll to prevent cooperation between
operating position acting on said ?rst lever means to move
said feed rolls; a pair of pressure means having an active
said one feed roll and pressure pad-s to their inactive posi~
position pressing the band or wire against a recording
tions, said operating lever having a portion located in the
head and an inactive position displaced from said active
path of movement of said portion of said second lever
position to prevent said pressure means from pressing the
means when said operating lever is in said ?rst operating
band or wire against the recording head; supply roll means
position thereof to prevent said spring means from mov
for supporting and turning a supply spool, said supply roll
ing said second lever means ‘to locate said rewind turning
means rotating in an unwinding direction during feeding
means in said active position thereof, and said operating
of a tape or wire from a supply spool to the pressure 65 lever means being turnable beyond said ?rst operating
means and feed rolls and rotating in a rewinding direction
position to a second operating position acting on said
opposite to said unwinding direction during rewinding
?rst lever means to maintain said one feed roll and pres
of the tape or wire onto the supply spool; rewind turning
sure pads in their inactive positions and locating said por
means having an inactive position displaced from said
tion of said operating lever out of the path of movement
supply roll means and ‘an active position cooperating with 70 of said portion of said second lever means to release the
latter to said spring means for locating said rewind
said supply roll means for rotating the latter in said re—
turning means in its active position, so that when said
winding direction; and common moving means cooperat
operating lever is in its second operating position ‘a tap
ing with said one feed roll, said pressure means, and said
or wire will be rewound.
. rewind turning means for ?rst moving said one feed roll
from said active to said inactive position thereof while 75 4. In a recorder, in combination, ?rstfeeding means
3,028,111
movable between an active position in which said feeding
means is adapted to engage a tape for feeding said tape
greater than said selected speed, and a rewind position
in which said ?rst feeding means and said stop means are
at a selected substantially uniform speed in a ?rst direc
tion and an inactive position in which the tape is not
moved to their inactive positions while said rewind means
is moved to said active position so that said tape is moved
fed by said ?rst feeding means; second feeding means
for feeding said tape in said ?rst direction with a speed
greater than said selected speed; stopping means movable
between an active position in which said stopping means
are adapted to engage said tape to prevent feeding of said
tape by said second feeding means when said ?rst feeding 10
means is in said inactive position thereof and an inactive
position in which said stopping means is disconnected
from said tape; rewind means for feeding said tape in a
by said rewind means in said second direction; spring
means operatively connected to said lever means and tend
ing to keep said lever means in said recording position
thereof; and ‘a single operating-means cooperating with
said lever means for moving said lever means ‘against the
force of said spring means from said recording position
first to said stop position then to said fast advance‘posi
tion and ?nally to said rewind position during movement
of said operating means in one direction;
6. In a recorder, in combination, ?rst feedin'g‘m‘ea'ns
second direction opposite to 'said ?rst direction, said
rewind means being movable between an active position 15 movable between an active position in which said feeding
in which said rewind means feeds said tape in said oppo
site direction and an inactive position; lever means oper
means is adapted to engage a tape for feeding said tape
at a selected substantially uniform speed in a ?rst direction
atively connected to said ?rst feeding means, said stopping
and an inactive'position in which the tape-is not fed by
said ?rst feeding means; second feeding means'for-feed
ing said tape in said ?rst direction with a speed ‘greater
than said selected speed; stopping means movable vbe
means and said rewind means and being movable between
a recording position in which said ?rst feeding means
and said stopping means are in their active positions and
said rewind means is in said inactive position so that said
tween an active position in which said stopping means
are adapted to engage said tape to prevent feeding ‘of said
tape will be moved at said selected uniform speed in said
?rst direction, a stop position in which said ?rst feeding
tape by second feeding means when said ?rst ‘feeding
means is moved by said lever means to said inactive
means is in said inactive position thereof and an inactive
position in which said stopping means is disconnected
from said tape; rewind means for feeding said tape in a
second direction opposite to said ?rst direction, said re
so that said tape remains at a standstill, a fast advance
wind means being movable between an active position in
position in which said ?rst feeding means and said stop
ping means are moved by said lever means to their inac '30 which said rewind means feeds said tape in said opposite
direction and an inactive position, said second feeding
tive position while said rewind means remains in its
means including slip clutch means permitting-slipping of
inactive position so that said tape is moved by said second
said second feeding means during feeding of said tape by
feeding means in said first direction at a speed greater
said ?rst feeding means in said ?rst direction and during
than said selected speed, and a rewind position in which
feeding of said tape by said rewind means in said second
said ?rst feeding means and said stop means are moved
direction; lever means operatively connected to said ?rst
to their inactive positions while said rewind means is
feeding means, said stopping means and said rewind means
moved to said active position so that said tape is moved
and being move-able between a recording position in which
by said rewind means in said second direction; and a
said ?rst feeding means and said stopping ‘means are in
single operating means cooperating with said lever means
for moving said lever means between said positions 40 their active positions and said rewind means'is in said in
active position so that said tape will be moved at said
thereof.
selected uniform speed in said ?rst direction, a'stop posi
5. In a recorder, in combination, ?rst feeding means
tion in which said ?rst feeding means is moved by said
movable between an active position in which said feed
lever means to said inactive position while said stop means
ing means is adapted to engage a tape for feeding said
tape at a selected substantially uniform speed in a ?rst 45 remains in said active position and said rewind means in
said inactive position so that said tape remains at a'stan'd
direction and an inactive position in which the tape is not
still, a fast advance position in which said ?rst feeding
fed by said ?rst feeding means; second feeding means for
means and said stopping means are moved by ‘said lever
feeding said tape in said ?rst direction with a speed greater
means to their inactive positions while said rewind means
than said selected speed; stopping means movable between
an active position in which said stopping means are 50 remains in its inactive position so that said tape is moved
by said second feeding means in said ?rst direction at a
adapted to engage said tape to prevent feeding of said tape
speed greater than said selected speed, and a rewind posi
by said second feeding means when said ?rst feeding
tion in which said ?rst feeding means and said stop means
means is in said inactive position thereof and an inactive
are moved to their inactive positions while said rewind
position in which said stopping means is disconnected
from said tape; rewind means for feeding said tape in a 55 means is moved to said active position so that said tape is
moved by said rewind means in said second‘ direction; and
second direction opposite to said ?rst direction, said rewind
a single operating means cooperating with said lever
means being movable between an active position in which
means for moving said lever means between said positions.
said rewind means feeds said tape in said opposite direc
thereof.
tion and an inactive position; lever means operatively
7. In a recorder, in combination, ?rst feedingmeans
connected to said ?rst feeding means, said stopping means
position while said stop means remains in said active
position and said rewind means in said inactive position
and said rewind means and being movable between a
including a feed roll and a pressure rollmovable between
said stopping means are in their active positions and said
rewind means is in said inactive position so that said
tape will be moved at said selected uniform speed in
said ?rst direction, a stop position in which said ?rst
feeding means is moved by said lever means to said
an active position in which said pressure roll is adapted
to press a tape against said feed roll and an inactive posi
tion in which said pressure roll is disconnected from said
tape; drive means for turning said feed roll at a‘substan
tial uniform speed in a ?rst direction so that said tape is
fed in said ?rst direction when said pressure roll is in
inactive position while said stop means remains in said
active position and said rewind means in said inactive
uniform speed; second feeding means for'feedin'g' said tape
advance position in which said ?rst feeding means and
said stopping means are moved by said lever means to
lected speed, said second feeding means including take-up
spool means for carrying and turning a take-up spool;
their inactive positions while said rewind means remains
in its inactive position so that said tape is moved by said
drive means to said take-up spool means and including
recording position in which said ?rst feeding means and
said active position thereof with a selected substantially
position so that said tape remains at a standstill, a fast 70 in said ?rst direction with a speed greater than saids'e
transmission means for transmitting a drive from said
second feeding means in said ?rst direction at a speed 75 a slip-clutch permitting slipping of said take-up spool
3,028,111
12
11
movable between an active position in which said stopping
wound up with great speed on to said take-up spool; and
a single operating means cooperating with said lever
means are adapted to engage said tape to prevent feeding
means to move the latter between said positions thereof.
means with respect to said drive means; stopping means
9. A recorder as recited in claim 8, in which said
of said tape by said second feeding means when said pres
pressure roll is mounted on said lever means.
sure roll is in said inactive positions thereof and an inac
110. A recorder as recited in claim 9, and including
tive position in which said stopping means is disconnected
spring means operatively connected to said lever means
from said tape; rewind means for feeding said tape in a
and tending to keep said lever means in said rest posi
second direction opposite to said ?rst direction, said re_
tions thereof.
wind means including motion transmitting means movable
11. In a magnetic recorder, in combination, a pair
between an active position in which said motion trans 10
of feed rolls one of which has an active position rela
mitting means connects said rewind means with said drive
tively close to the other feed roll to cooperate there
means and an inactive position in which said motion
with for feeding a band or wire and an inactive position
transmitting means is disconnected from said drive means;
displaced from said other feed roll to prevent coopera
lever means operatively connected to said pressure roll
of said ?rst feeding means, said stopping means and said 15 tion between said feed rolls; a pair of pressure pads having
an active position pressing the band or wire against a
motion transmitting means of said rewind means for mov
recording head and an inactive position displaced from
said active position to prevent said pads from pressing
positions thereof, for moving said stopping means from
the band or wire against the recording head; supply roll
said active to said inactive positions thereof and for mov
ing said motion transmitting means from said inactive to 20 means for supporting and turning a supply spool, said
supply roll means rotating in unwinding direction during
said active postions thereof, said lever means being mov
feeding of a tape or wire from a supply spool to the
able between a recording position in which said pressure
ing said pressure roll between said active and said inactive
pressure pads and feed rolls and rotating in a rewind
roll and said stopping means are in their active positions
ing direction opposite to said unwinding direction during
and said motion transmitting means is in said inactive
position so that said tape will be moved at said selected 25 rewinding of the tape or wire onto the supply spool;
uniform speed in said ?rst direction, a stop position in
which said pressure roll is in said inactive position while
take-up roll means for supporting and turning a take-up
tion; and a single operating means cooperating with said
from said inactive to said active position thereof; and
second lever means cooperating with said ?rst lever
spool onto which a tape or wire fed by said feed rolls
is wound; rewind turning means having an inactive
said stop means remains in said active position so that
position displaced from said supply roll means and an
said tape remains at a standstill, a fast advance position
in which said pressure roll, said stopping means and said 30 active position cooperating with said supply roll means
for rotating the latter in said rewinding direction; ?rst
rewind means are in their inactive positions so that said
lever means cooperating with said one feed roll, said
tape is fed by said second feeding means in said ?rst direc
pressure pads, and said rewind turning means for ?rst
tion at a speed greater than said selected speed, and a re
moving said one feed roll from said active to said in
wind position in which said pressure roll and said stop
means are in their inactive positions while said motion 35 active position thereof, for then moving said pressure
pads from said active to said inactive position thereof,
transmitting means is in said active position so that said
and for thereafter moving said rewind turning means
tape is moved by said rewind means in said second direc
lever means for moving said lever means between said
positions thereof.
40 means for turning the latter to move to said one feed
8. In a recorder, in combination, take-up spool means
for carrying and turning a take-up spool; drive means
for turning said take-up spool means in a direction in
which a tape is wound on said take—up spool, said drive
roll from said active to said inactive position thereof
to press said tape against said feed roll and an inactive
for ?xing said lever members to each other in an ad
and to move said pressure pads from said active to said
inactive position thereof, and said, second lever means
cooperating with said ?rst lever means to prevent the
means including a spring pressed slip clutch; spring 45 latter from moving said rewind turning means to said
active position thereof, so that said take-up roll means
pressed pressure pad means movable between an active
can advance a tape or wire without recording sound
position in which said pressure pad means is adapted to
thereon.
press a tape against a surface with a pressure great
v12. In a magnetic recorder as de?ned in claim 1 in
enough to prevent movement of said tape by said take
up spool means when said take-up spool means are driven 50 which said pair of pressure means are constituted by a
pair of pressure pads and in which said common moving
by said drive means over said slip clutch and an inactive
means are constituted by lever means.
position in which said pressure pad means is discon
‘13. In a magnetic recorder as de?ned in claim 12 in
neeted from said tape; a feed roll operatively connected
which said lever means include a pair of overlapping
to said drive means to be driven thereby in a direction
so that a tape pressed against said feed roll is fed to 55 lever members turnable about a common axis so that
said lever members are adjustable with respect to each
ward said take-up spool; a pressure roll movable between
other, and means cooperating with said lever members
an active position in which said pressure roll is adapted
justed position with respect to each other.
position in which said pressure roll is disconnected from
said tape; lever means cooperating with said pressure 60
References Cited in the ?le of this patent
roll and said pressure pad means and movable from a
rest position in which said pressure roll and said pressure
UNITED STATES PATENTS
pad means are in their active positions so that said
tape will be fed by said feed roll toward that take-up
spool means with a substantially uniform speed and be 65
wound up on said take-up spool, to a ?rst operating
position in which said pressure roll is moved to its in
active position while said pressure pad means remains
in its active position so that said tape remains at a
standstill, and to a second operating position in which 70
said pressure roll and said pressure pad means are moved
to their inactive positions so that said tape will be
2,555,643
2,639,333
2,645,495
2,705,262
2,705,639
2,751,438
2,782,263
2,790,643
2,793,039
Harrison ____________ __ June 5,
Howell et a1. ________ __ May 19,
Nelson _____________ __ July 14,
Post et al ____________ __ Mar. 29,
Lekas _______________ __ Apr. 5,
Baer _______________ __ June 19,
Hoehn et a1. _________ __ Feb. 19,
Gedde et al. _________ __ Apr. 30,
Hironimus ___________ __ May 21,
1951
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