U.S. patent number 3,590,159 [Application Number 04/776,204] was granted by the patent office on 1971-06-29 for telephone-answering device.
This patent grant is currently assigned to Electrospace Corporation. Invention is credited to Kalju Meri, John Simms, Arnold Wolf.
| United States Patent |
3,590,159 |
| Wolf , et al. |
June 29, 1971 |
TELEPHONE-ANSWERING DEVICE
Abstract
A telephone-answering device of the type utilizing a shifting
position playback and recording head, wherein the head is urged
through movement by an expanding member, such as a spring, which in
each operating interval is expanded a prescribed extent effective
to cause a theoretical maximum extent of movement in such head, but
wherein usual operation contemplates the limiting of head movement
to selected lesser extents than said theoretical maximum to thereby
provide plural recording positions for the head. The difference
between theoretical and actual head movement is readily allowed for
by expansion of the spring.
|
Inventors: |
Wolf; Arnold (Brooklyn, NY),
Simms; John (Yonkers, NY), Meri; Kalju (Maspeth,
NY) |
|
Assignee: |
Electrospace Corporation (Glen
Cove, NY)
|
| Family
ID: |
25106759 |
| Appl.
No.: |
04/776,204 |
| Filed: |
November 15, 1968 |
| Current U.S.
Class: |
379/73;
379/82 |
| Current CPC
Class: |
H04M
1/6515 (20130101) |
| Current International
Class: |
H04M
1/65 (20060101); H04m 001/64 (); G11b 005/48 ();
G11b 021/08 () |
| Field of
Search: |
;179/6R,6,1.1DR,1.2MD,6AC,1.3B,1.2CA ;274/4A,11A |
References Cited
[Referenced By]
U.S. Patent Documents
Other References
901,173 07001962 GB 179 6.
|
Primary Examiner: Moffitt; James W.
Assistant Examiner: Cardillo, Jr.; Raymond F.
Claims
We claim:
1. A telephone-answering device adapted to play out an announcement
in response to an incoming call and to record an incoming message
comprising announcement playout and message recording means
including a recording surface provided with a first section of a
prescribed width having at least one announce track adjacent one
side of said recording surface and a second section adjacent to
said first section, said second section having a prescribed width
with plural message recording tracks across said prescribed width
of said second section, a playback and recording head, resilient
means exerting an urging force of a prescribed extent on said head
to normally maintain said head in a starting position adjacent said
announce track of said first section, movement-actuating means,
signal means disposed on said first section at an end of said
announce track to activate said movement-actuating means subsequent
to an announcement playout, said movement-actuating means being
operatively connected to pivoted member linkage means, said pivotal
member linkage means being operatively connected to said head for
moving said head from said starting position of said first section
transversely across said recording surface to said second section
in a message-recording position adjacent a selected one of said
plural message-recording tracks in opposition to said resilient
means an actuation of said movement-actuating means by said signal
means, and track selecting means disposed in a path of movement of
said pivotal member means to engage said pivotal member means to
limit movement of said head adjacent to said selected one of said
plural message-recording tracks.
2. A telephone-answering device as defined in claim 1, wherein said
recording surface is a part of an endless loop of a recording
tape.
3. A telephone-answering device adapted to play out an announcement
in response to an incoming call and to record an incoming message
comprising announcement playout and message-recording means
including a recording surface provided with a first section of a
prescribed width having at least one announce track adjacent one
side of said recording surface and a second section adjacent to
said first section, said second section having a prescribed width
with plural message-recording tracks across said prescribed width
of said second section, a playback and recording head, resilient
means exerting an urging force of a prescribed extent on said head
to normally maintain said head in a starting position adjacent said
announce track of said first section, movement-actuating means,
first signal means disposed on said first section at an end of said
announce track to activate said movement-actuating means subsequent
to an announcement playout, said movement-actuating means being
operatively connected to pivoted member linkage means, said pivotal
member linkage means being operatively connected to said head for
moving said head from said starting position of said first section
transversely across said recording surface to said second section
in a message-recording position adjacent a selected one of said
plural message-recording tracks in opposition to said resilient
means on actuation of said movement-actuating means by said first
signal means, track-selecting means disposed in a path of movement
of said pivotal member means to engage said pivotal member means to
limit movement of said head adjacent to said selected one of said
plural message-recording tracks, and second signal means disposed
on said second section at an end of each of said plural
message-recording tracks to deactivate said movement-actuating
means subsequent to a message recording interval to allow said
resilient means to return said head to said starting position
adjacent to said announce track of said first section of said
recording surface.
4. A telephone-answering device as defined in claim 3 wherein said
track-selecting means is a rotatable member having an edge provided
with plural recesses effective to limit movement of said head as a
function of the depth of one of said recesses engaged by said
pivotal member linkage means during movement thereof.
5. A telephone-answering device as defined in claim 3 wherein said
track-selecting means includes an element provided with means to
alternately space said head in order of its contemplated use with
respect to said plural message-recording tracks so that one
recording track is interposed between a pair of successively
selected ones of said plural message-recording tracks.
6. A telephone answering device as defined in claim 3 including a
second resilient means, said pivotal member linkage means and said
second resilient means having an operative interposed position
between said movement actuating means and said head, said second
resilient means being expanded during each message-recording
interval a distance proportional to the extent of movement of said
pivotal member linkage means as permitted by said track-selecting
means.
7. A telephone-answering device as defined in claim 6 wherein said
second resilient means is connected at one end to said pivotal
linkage member means and at its opposite end to said
movement-actuating means.
8. A telephone-answering device as defined in claim 3 wherein said
movement-actuating means is a solenoid having a piston with a
prescribed stroke of proportionally lesser extent than the combined
prescribed widths of said first and second sections of said
recording surface, the proportion being a function of a movement
amplification characteristic of said pivotal member linkage
means.
9. A telephone-answering device adapted to play out an announcement
in response to an incoming call and to record an incoming message
comprising announcement playout and message-recording means
including a recording surface provided with a first section of a
prescribed width having plural announce tracks adjacent one side of
said recording surface and a second section adjacent to said first
section, said second section having a prescribed width with plural
message-recording tracks across said prescribed width of said
second section, a playback and recording head, resilient means
exerting an urging force of a prescribed extent on said head to
normally maintain said head in a starting position adjacent a
selected one of said announce tracks of said first section,
movement-actuating means, first signal means disposed on said first
section at an end of said announce track to activate said
movement-actuating means subsequent to an announcement playout,
said movement-actuating means being operatively connected to
pivoted member linkage means, said pivotal member linkage means
being operatively connected to said head for moving said head from
said starting position of said first section transversely across
said recording surface to said second section in a
message-recording position adjacent a selected one of said plural
message-recording tracks in opposition to said resilient means on
actuation of said movement-actuating means by said first signal
means, track-selecting means disposed in a path of movement of said
pivotal member means to engage said pivotal member means to limit
movement of said head adjacent to said selected one of said plural
message recording tracks, and second signal means disposed on said
second section at an end of each of said plural message-recording
tracks to deactivate said movement-actuating means subsequent to a
message-recording interval to allow said resilient means to return
said head to said starting position adjacent to said selected one
of said announce tracks of said first section of said recording
surface.
10. A telephone-answering device as defined in claim 9 including an
announce track-selecting means operatively arranged in the return
path of movement of said head and effective to limit movement
thereof to a position adjacent a selected one of said announce
tracks.
11. A telephone answering device adapted to play out an
announcement in response to an incoming call and to record an
incoming message comprising announcement playout and
message-recording means including an endless loop of recording tape
provided with a first section of a prescribed width having at least
one announce track adjacent one side of said recording tape and a
second section adjacent to said first section, said second section
having a prescribed width with plural message recording tracks
across said prescribed width of said second section, a playback and
recording head, movement-actuating means including a solenoid,
signal means disposed on said first section at an end of said
announce track to activate said solenoid of said movement-actuating
means subsequent to an announcement playout, said solenoid being
provided with piston means of a prescribed stroke, spring means
operatively connected between said piston means and pivoted member
linkage means so as to resiliently urge said pivotal member linkage
means through a pivotal movement upon operation of said solenoid,
said pivotal member linkage means being operatively connected to
said head for moving said head during said pivotal movement from a
starting position adjacent said announce track of said first
section transversely across said recording tape to said second
section in a message-recording position adjacent a selected one of
said plural message-recording tracks on actuation of said solenoid
by said signal means, track-selecting means disposed in a path of
movement of said pivotal member means to engage said pivotal member
means to limit movement of said head adjacent to said selected one
of said plural message-recording tracks.
12. A telephone-answering device as defined in claim 11 wherein
said track selecting means is a rotatable member having an edge
provided with plural recesses effective to engage with said pivotal
member linkage means at different positions of pivotal movement
thereof as a function of the depth of said one recess against which
engagement is actually made.
13. A telephone-answering device as defined in claim 12 wherein
said solenoid is operatively connected to additionally cause
rotative movement of said rotatable member of said track selecting
means to thereby enable movement of said head to a different
message-recording position in successive recording intervals.
Description
The present invention relates generally to an improved device for
automatically answering a telephone call by transmitting a
prerecorded announcement to a caller and recording a dictated
message from the calling party, and more particularly to improved
means for affecting alternately, the announcement playout and
incoming message recording.
There are telephone-answering devices of the kind herein
contemplated in which it is necessary to use two separate decks
having two magnetic tapes and two separate record/playback heads in
order to provide for the playout of a recorded announcement and
subsequent recording of an incoming message. One tape is used for
the announcement and the other tape is used for the incoming
message. In addition, the use of two separate tapes requires,
besides two separate heads, the use of two separate tape drive
systems and their ancillary components. Furthermore, electrical
switching means are necessary to switch from one deck operation to
the other deck operation.
While such prior art telephone-answering devices generally provide
commercially acceptable service, there is no one known model that
is completely satisfactory from the viewpoint of economical cost of
production, or economical maintenance and repair.
Broadly, it is an object of the instant invention to provide an
improved telephone-answering device overcoming the foregoing and
other shortcomings of the prior art. Specifically, it is an object
to provide a telephone-answering device of the type having only one
record/playback head operatively arranged to provide both
announcement playout and incoming message-recording functions, such
functioning being effectively coordinated with shifting movement of
the head between playback and recording positions thereof relative
to a single magnetic recording tape.
Additionally, it is an object of the invention to provide a
telephone-answering device using only a single magnetic tape, a
single record/play head and a single tape drive system.
It is a further object of this invention to use a record/play head
which is shiftable transversely across the recording tape.
A further limitation which exists with prior art telephone
answering devices is their being limited to only one announcement
message. If a second announcement message is desired it can be
achieved only by recording the second announcement message on the
first announcement, thereby erasing it. Conversely, if it is
desired to repeat the first announcement message it has to be
recorded again resulting in the erasure of the second recorded
announcement message. It is evident from the foregoing, that in the
instance where a user of the answering equipment desires to have
different styles of announcement messages on leaving his office for
lunch hour, on leaving for the day or for weekends, this would
entail considerable inconvenience to the user to repeatedly have to
rerecord a new announcement at each instance of leaving his
office.
It is accordingly an object of the instant invention to overcome
this shortcoming by facilitating the possibility of recording
multiple announcements on the recording tape, adjacent to each
other. The user can select any one of the multiple announcements,
at any time, by turning a selector control thus shifting the
movable head to the desired announcement position.
The above brief description, as well as further objects, features
and advantages of the present invention, will be more fully
appreciated by reference to the following detailed description of a
presently preferred, but nonetheless illustrative embodiment in
accordance with the present invention, when taken in conjunction
with the accompanying drawings, wherein:
FIG. 1 is a simplified plan view of a telephone-answering device
according to the present invention wherein positions of movement of
moving parts thereof are illustrated in phantom and full line
perspective;
FIG. 2 is a front elevational view projected from FIG. 1 in which
positions of movement of a movement-actuating means providing the
positions of movement of FIG. 1 are, in turn, illustrated in
phantom and full line perspective;
FIGS. 3A and 3B are greatly simplified plan views which best
illustrate the selection of different recording tracks, the
positions of movement of moving parts of the device again being
illustrated in full line and phantom line perspective;
FIG. 4 is a plan view, on a greatly enlarged scale, of a magnetic
recording tape suitable for use in the telephone-answering device
hereof; and
FIG. 5 is a circuit diagram of exemplary electrical controls for
the telephone-answering device.
Reference is now made to the drawings and in particular to the
simplified showing in FIGS. 1, 2 of a telephone-answering device
demonstrating objects and advantages of the present invention, such
device being generally designated 10 and appropriately enclosed
within a housing, only the bottom wall 12a and front and rear walls
12b, 12c, respectively, of which are shown in FIGS. 1, 2. The
illustrated embodiment of the device 10 utilizes an endless loop of
recording tape 14 on which, as will be subsequently described in
greater detail herein, there is provided either one or several
announce tracks which, as the name implies, has an appropriate
message which announces to the telephone caller that the party
being called is not available and which further invites the caller
to then dictate a message which is recorded by the device 10. Thus,
also as will be subsequently described in greater detail herein,
the recording tape 14 additionally has appropriate delineated or
reserved areas for recording a message dictated by the telephone
caller. These areas shall be referred to in this description and in
the appended claims as potential plural message recording tracks
even though each is not technically a track until a message has
been recorded therealong. Cooperating with the recording tape 14 is
a combination playback and recording head 16, of conventional
design, which is effective, as generally understood, to provide an
audio reproduction or playout of the message previously recorded on
the tape announce track or tracks (as the case may be) and also to
produce a recording of the caller's message on the tape recording
tracks. To achieve this functioning, the head 16, according to the
present invention, is movable from a starting announcement playout
position adjacent one side 14a of the tape, along which it will be
understood there is provided the previously referred to announce
tracks and which playback position is illustrated in phantom
perspective in FIG. 1, transversely across the width of the tape 14
for a selected extent to a message recording position, such as is
illustrated in full line in FIG. 1. At the selected
message-recording position the head 16 is then adjacent a potential
message-recording track of the tape 14 and is operated, in a well
understood manner, to record the message being dictated by the
caller.
Turning now to the structural details by which the foregoing
transverse movement of the head 16 is achieved, as is clearly
illustrated in FIGS. 1, 2, head 16 is appropriately rigidly secured
to a plate 18 having confined slidable movement along the housing
bottom wall 12a, the plate 18 being movable beneath a combination
guide and holding bracket 20 at one end and elsewhere having
strategically located bearing and groove arrangements 22 which
cooperate to confine plate 18 to movement transversely of the tape
14, as already noted. An L-shaped member 24 pivotally mounted at
the juncture of its legs, as at 24a, is connected at the free end
of its longer leg 24b to the plate 18, such connection being
achieved by a pin and slot 26 which, as generally understood, makes
allowance for the pivotal movement of the member 24 about the
pivotal axis 24a while imparting sliding movement to the plate 18
which is tangential to the axis 24a. At the free end of its short
leg 24c, member 24 is connected, at 28a, to one end of a helical
spring 28 which is connected at its opposite end 28b to the lower
pivoting end of the lever 30 which, in turn, is actuated through
pivoting movement by a solenoid 32, the details of which pivotal
movement will subsequently be described in greater detail. At this
convenient point in the description, however, it should be noted
that in response to pivotal movement of the lever 30, as from its
full line to its phantom line positions depicted in FIGS. 1, 2
spring 28 is correspondingly expanded and a force urgency is
created in this member which is effective to urge the member 24
through clockwise pivotal movement about the axis 24a. Consistent
with this functioning of the spring 28, there is a spacing rod 34
freely disposed within the helical turns of the spring.
Specifically, rod 34 is free of attachment to either the lever 30
or leg 34b although it is in abutment with those elements prior to
operation of the solenoid 32. Thus, upon operation of the solenoid
32 and movement of the lever 30 to its pivoted position of movement
as depicted in phantom line perspective, spacing rod 34 and, more
particularly, end 34b thereof is moved to a clearance position out
of contact with the short leg 24c and, in the usual circumstances
of operation of the device 10, does not come back into contact with
this leg until after an announcement playout and message recording
interval of operation of the device 10.
In the foregoing description of operation it will be understood
that the movement of the lever 30, as provided by the solenoid 32,
is of an extent which is effective in causing head movement of an
extent at least equal to the width W of the tape 14 such that the
theoretical extent of the movement which can be imparted to the
head 16, as measured from the starting position adjacent the edge
14a, is completely across the width of the tape to the opposite
side 14b. In practice, however, movement of head 16 is limited to
only a portion of this theoretical extent of travel and, further,
such limitation of movement is operatively arranged to coincide
with the positions of movement required of the head 16 such as is
necessary to provide a selected one of the possible recording
positions for the head adjacent the various potential
tape-recording tracks. In other words, in each announcement playout
and message recording interval of operation of the device 10, the
expansion of the helical spring 28 which serves as the prime mover
of the member 24 is conducted to an extent necessary to
theoretically produce movement in the head 16 to the full extent of
at least the width of the tape 14 though, in usual circumstances,
the member 24 and thus the head 16 mounted thereon actually moves
only a portion of this distance.
The head-movement limiting mechanism, or more particularly, the
track-selecting means of the device 10 includes a transversely
oriented shaft 36 appropriately journaled for rotation in bearings
supported in the housing front and rear walls 12b, 12c. In the
illustrated embodiment hereof, which has been simplified so as not
to obscure the invention, there is rigidly mounted on a medial
portion of the shaft 36 and thus rotatable in unison therewith a
cylindrical member 38 having an edge 38a in facing relation to the
member 24 and having as its significant structural aspect a
circumferentially arranged series of accurately machined, molded or
otherwise appropriately provided recesses, herein individually and
collectively designated R. The specific position of the member 38
along the shaft 36 is such that a selected individual one of the
recesses R will be engaged by an upstanding pin 24d mounted in the
medial portion of the long leg 24b and thus in an advantageous
position, during pivotal movement of the long leg 24b, to make this
engagement and thus provide a selected one of 13 recording
positions for the head 16, each such recording position aligning
with a cooperating recording track of the tape 14. In other words,
location of the recessed edge 38a in the path of pivotal movement
of the pin 24d on the member long leg 24b results, during each
operating interval of the device 10, in engagement of this pin
against a surface defining a specific recess R and, as a
consequence, limits clockwise pivotal movement of the member 24 and
thus the transverse movement of the head 16 to a specific position
of movement adjacent the tape 14, this position of movement being
more particularly one in which the head 16 is appropriately
adjacent a potential recording track of the tape 14.
To better understand the cooperating relationship between the
recesses R and the positions of movement of the head 16 relative to
the tape 14, reference should be made to the enlarged scale
illustration of the tape 14 in FIG. 4. As already noted, one or
possibly three announce tracks A1, A2 and A3 are allotted on the
tape 14 adjacent the edge 14a. The potential message recording
tracks are arranged longitudinally of the tape 14 in side-by-side
positions across the prescribed width W of the tape 14. These
potential message recording tracks are designated in FIG. 4 by the
reference letter T followed by an arithmetic number in the order in
which the tracks are utilized; thus track T1 is the first of these
recording tracks to be utilized in the recording of a message
dictated by a telephone caller and is followed in use by recording
track T2 and so forth until all 13 of the available recording
tracks are used, it being understood that the invention is in no
way limited to the use of only 13 recording tracks but that more or
less than this number may be used. As illustrated in FIG. 4,
however, it will be noted that the tracks intended to be
sequentially used in the operation of the device 10 are alternately
spaced with each other such that, for example, successively
utilized recording tracks T1 and T2 are separated by recording
track T12. As a result of this alternate spacing, the distance D
between successively used tracks, as exemplified by tracks T1, T2,
is larger than what would be the required distance if the
successively used recording tracks were adjacent each other, This
alternate spacing or interleaving of successively used tracks has
been found to minimize cross talk between adjacent tracks. The
invention, however, is not limited to the alternate spacing of the
recording tracks T since this feature is only preferred but not
essential.
Still referring to FIGS. 1, 2, rigidly mounted on shaft 36 adjacent
the cylindrical member 38 is a ratchet 40 having the usual
circumferentially spaced peripheral teeth 40a. Cooperating with the
ratchet 40 is a pawl 42 having a hook 42a which, in practice,
meshes with the ratchet teeth 40a during the interval of operation
of the device 10 that solenoid 32 is deenergized and return spring
44 is then effective in urging the meshing pawl 42 through movement
causing counterclockwise rotation of the shaft 36. Naturally,
rotation of the shaft 36 in turn results in rotation of the
cylindrical member 38 and thus the positioning of the next recess R
for engagement with the upstanding pin 24d. Any holding mechanism,
such as the recessed wheel and detent arrangement 45 may be used to
hold the shaft 36 and member 38 in each discreet position of
rotation.
As is clearly shown in FIG. 2, pawl 42 is appropriately rigidly
connected to extend laterally of a pivotally mounted lever 46
engaged at its upper end also to a return spring 44, at its lower
end pivotally connected, as at 44a, to a horizontally oriented
support 46, and engaged at its medial area to an extending portion
32a of the solenoid plunger. Thus, during a power stroke of the
plunger 32a, lever 46 is pivoted from its full line position to its
phantom line position as depicted in FIG. 2 and in the process pawl
42 is disengaged from the ratchet 40 and moved into its ready
position, also depicted in phantom line perspective in FIG. 2. The
opposite end of the solenoid plunger 32b is connected to the upper
end of the previously noted lever 30 which is also pivotally
connected, as at 48, to the support 46 but at the opposite
extending end thereof. Lever 30, when urged through pivotal
movement during operation of the solenoid 32 and thus in response
to the power stroke of the solenoid plunger 32b, causes expansion
of the spring 28 and thus movement of the head 16, all as
previously described herein. From the foregoing, it should
therefore be appreciated that movement of the pawl 42 from its
ready position into its meshing position in which it causes
rotation of the shaft 36 occurs during movement of the member leg
24b back to its original starting position and thus when the pin
24d is out of contact with the recesses R and the cylindrical
member 38 is thus free to rotate with the shaft 36. Facilitating
this return of the member 24 to its starting position is a return
spring 48 connected between this member and the housing rear wall
12c. Any appropriate technique of regulating the urgency of the
opposing springs 28 and 48 may be employed to achieve clockwise and
then reverse return movement of lever 24. For example, a preferred
technique is prestretching spring 28 to produce a force urgency
therein almost equal to that of spring 48 such that the subsequent
additional expansion thereof occurring upon operation of solenoid
32 is clearly effective to overcome the resistance of spring
48.
Completing the device 10 is a tape drive mechanism for moving the
endless loop of tape 14 longitudinally past the head 16 during the
playback and recording positions of the head. The preferred
embodiment for this mechanism, as illustrated in FIGS. 1, 2
includes a motor 50 appropriately mounted on supports 52, 54 on
housing rear wall 12c and having a drive shaft 56 extending through
this housing wall and mounting a pulley 58 on the free end thereof.
Entrained about this pulley and about a cooperating pulley 60 is a
pulley belt 62 which is effective in transmitting the rotational
power of the motor 50 to a capstan shaft 64 mounting the pulley 60.
As is perhaps best shown in FIG. 2, the endless loop of tape 14 is
contained within a housing 68, the major length portion of the tape
being arranged in folds and threaded over an end of the shaft 64
and a guide roller 72 such that the tape has a run along the
outside of the tape housing front wall 68a and, during such run,
passes in close playback and recording proximity to the head 16.
The capstan shaft 64 is powered in rotation during operation of the
motor 50 and thus causes longitudinal movement of the tape 14, an
appropriate nip pressure for driving the tape 14 being applied by
an elastomeric roller 66 journaled for rotation in a lever 74 which
is pivotally mounted at one end, as at 76, to the housing front
wall 12c and biased through pivotal movement via spring 78 against
the tape 14 interposed between the roller 66 and shaft 64.
Description will now be made of a typical announcement playout and
recording interval of operation of the device 10 with specific
reference to the plan views of FIGS. 3A, 3B, and 4. As already
noted, an exemplary embodiment of the tape 14, as clearly shown in
FIG. 4, includes several announce tracks, A1, A2 and A3 as well as
a plurality of potential recording tracks, as exemplified by tracks
T1--13. The determination of the specific one or number of announce
tracks A1, A2 or A3 available for use is a function of the starting
position of head 16, such starting position being in turn a
function, as clearly illustrated in FIG. 1, of which one of three
seats S1, S2 or S3 on wheel 80 is dialed into position to
accommodate a cooperating laterally extending pin 81 in seating
relation when plate 18 is biased by spring 48 to its starting
position.
As is clearly illustrated in FIG. 4, the endless loop of tape 14
includes a transversely oriented segment 14c which cooperates, in a
manner which will soon be described in detail, with a photocell to
produce an appropriate signal indicating initially that the end of
an announce track, either of track A1, A2 or A3, has been reached
and thereafter causing movement of the head 16 from one such
announce track to one of the recording tracks that is selected as a
function of the particular recess R which is engaged by the
upstanding pin 24d during pivotal movement of the member 24, all as
has been previously described. The longitudinal movement of the
tape 14 naturally moves the selected recording track past the head
16 which then operates, in a well understood manner, to record the
dictated message of the caller along the recording track. When the
transparent segment 14c is again encountered, the signal from the
cooperating photocell is at this time effective to terminate the
operation of the telephone-answering device 10 and cause all moving
parts thereof to return to their initial starting position in
preparation for the next successive playback and recording interval
of operation.
By way of providing concrete examples of operating intervals of the
device 10 for purposes of this description, reference is made to
FIG. 3A which illustrates movement of the head 16 from its initail
starting playback position, as illustrated in full line, adjacent
the announce track A1, to a recording position, illustrated in
phantom line perspective, adjacent a recording track located in the
medial portion of the tape 14, as for example adjacent recording
track T3. This selected positioning of the head 16 is achieved by
engagement of the upstanding pin 24d, during pivotal movement of
the member leg 24b in a recess located approximately midway between
a point of shallowest and greatest depth of the cylindrical wall
which defines the member 38, such recess being specifically
designated R3 in FIG. 3A and being understood to be that recess
which is correlated with the tape 14 to provide a position to the
head 16 adjacent the track T3. Assuming successive operating
intervals of the device 10, ultimately these uses will result in
utilization of succeeding recording tracks which, for present
purposes, will further be assumed to include tracks T4-6,
inclusive, thus leaving recording track T7 as the next recording
track available for use. Since track T7 is located adjacent the far
end 14b of the tape 14, extensive movement is required of the head
16. As illustrated in in FIG. 3B, member 38 will thus be understood
at this time to have rotated to a position of rotation in which
recess R7, the recess defined by the shallowest extent of the wall
of member 38, is then in position to be engaged by the pin 24d,
such engagement occurring upon pivotal movement of member 24, all
as is clearly illustrated in phantom line perspective in FIG.
3B.
As is perhaps best understood from FIGS. 3A, 3B, and more
particularly from the full line and phantom line illustrations of
the positions of movement of these FIGURES, use in advantageously
made of the geomentry of lever legs 24b, 24c which, in a well
understood manner, provides amplification of the pivotal traverse
of leg 24c in the output pivotal traverse of let 24b. For this
reason, the power stroke of solenoid 32 and thus the expansion of
spring 28 need only be proportional to the maximum travel required
of the head 16, the final output movement being supplemented by the
movement amplification characteristic of lever 24.
Any one of numerous electrical controls can be provided for
operating the telephone-answering device 10 in the manner just
described, but for completeness sake, a circuit diagram for a
preferred arrangement of such electrical controls is illustrated in
FIG. 5, to which FIGURE reference is now made. As clearly
illustrated therein, connected to the incoming telephone lines 90,
92 is a transformer 94 coupling the telephone circuit to a
telephone-ringing sensing means 96, this portion of the circuit
further including a conventional DC blocking capacitor 98
functioning in a well-understood manner to block the telephone line
direct current from the sensor 96. Upon receipt of a
telephone-ringing signal, the previously noted telephone-ringing
sensing means 96 is effective to bias a transistor 100 into its
conduct condition thereby operating relay 102. The operation of
relay 102 in turn results in the closing of a first set of relay
contacts 102a (located adjacent the sensing means 96), a second set
of contacts 102b and also a third set of contacts 102c, with the
following results: closing of contacts 102a grounds the emitter of
transistor 100, thus maintaining the same in its conductive
condition, closing of contacts 102b completes the circuit for the
tape drive motor 50, thus rendering this motor operative, and
closing of contacts 102c will seize the telephone line.
As already noted, operation of motor 40 operates the previously
described tape drive mechanism, illustrated in diagrammatic block
form in FIG. 5 and designated with the reference numeral 64 of the
previously noted drive shaft, to thereby cause longitudinal
movement of the endless loop of tape 14 past the combination
recording and playback head 16. At this time, during the operating
interval of the device 10, a prerecorded announcement recorded on
one of the tape announce tracks, A1, A2 or A3 is played out to the
telephone lines 90, 92 via the head 16, along the conductors
through normally closed contacts 116a, through the amplifier 106,
along the conductors through the normally closed contacts 116b, and
finally through the telephone transformer 94.
As additionally already noted, at the completion of the playout of
the message on the announce track, the tape transparent segment 14c
ultimately passes between a photocell and lamp arrangement 110
triggering, in a well-understood manner, the photocell. The
photocell, in turn, triggers a conventional flip-flop circuit
network 112, which at this time will be understood to be flipped
into a state effective to bias a cooperating transistor 114 into
conductivity. It will further be understood that the flip-flop
state of the network 112 is also at this time in such a condition
that the previously noted transistor 100 is driven to further
saturation.
Operation of the transistor 114 energizes the coil of a relay 116
causing closure of relay contacts 116e. The closing of relay
contacts 116e completes the circuit for the solenoid 32. As already
noted, operation of solenoid 32 is effective in shifting the head
16 from its starting playback position adjacent an announce track
to a recording position adjacent a recording track, such position
being a function of the recess R on member 38 presented for
engagement by the upstanding pin 24d of the member 24. Operation of
relay 116 also has the effect of shifting the input connection of
the amplifier 106 via the normally open contacts 116d to the
telephone transformer 94. Thus, the incoming message being dictated
by the caller is now fed into the amplifier 106 and recorded on a
tape-recording track via normally open contacts 116c and head
16.
When the endless loop of tape 14 completes its cycle of
longitudinal movement, the tape transparent segment 14c is again
passed between the photocell and lamp arrangement 110, thereby
triggering the photocell which again triggers the flip-flop circuit
network 112, flopping this circuit at this time into a state so as
to bias both the previously noted transistors 100 and 114 into
their cutoff conditions. The cutoff of transistor 100 releases
relay 102 causing deactivation of the motor 50 and release of the
telephone line while the release of relay 116 deactivates the
solenoid 32. Upon deactivation of the solenoid 32, the return
spring 48 biases head 16 back to its starting position adjacent the
announce tracks of the tape 14. Additionally, due to the release of
relay 116, the input and output of the amplifier 106 is again
connected to the head 16 and telephone transformer 94,
respectively. Thus, the telephone-answering device 10 is returned
to its starting or standby condition preparatory to operation for
succeeding playback and recording intervals.
A latitude of modification, change and substitution is intended in
the foregoing disclosure and in some instances some features of the
invention will be employed without a corresponding use of other
features.
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