U.S. patent number 3,771,035 [Application Number 05/253,606] was granted by the patent office on 1973-11-06 for plural lineal movement system and process.
This patent grant is currently assigned to Teletype Corporation. Invention is credited to Gerhard Cless.
United States Patent |
3,771,035 |
Cless |
November 6, 1973 |
PLURAL LINEAL MOVEMENT SYSTEM AND PROCESS
Abstract
A pair of electrical coils, which are disposed in a magnetic
flux field, are constrained for movement in intersecting paths in a
plane. A mechanical coupling assembly has a first part connected to
one of said coils and to a second part of said assembly. The other
of said coils is connected to said second part. A displaceable
member is also connected to said second part and has a single
position in a plane for each combination of positions of the coils
along their respective paths.
Inventors: |
Cless; Gerhard (Skokie,
IL) |
Assignee: |
Teletype Corporation (Skokie,
IL)
|
Family
ID: |
26718189 |
Appl.
No.: |
05/253,606 |
Filed: |
May 15, 1972 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
|
41485 |
May 28, 1970 |
3696204 |
|
|
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Current U.S.
Class: |
318/135; 318/38;
400/320; 310/14; 346/29; 400/322 |
Current CPC
Class: |
B41J
19/305 (20130101); B41J 7/60 (20130101); H04L
17/30 (20130101) |
Current International
Class: |
B41J
19/20 (20060101); B41J 19/30 (20060101); B41J
7/60 (20060101); B41J 7/00 (20060101); H04L
17/30 (20060101); H04L 17/00 (20060101); H02k
041/02 () |
Field of
Search: |
;318/37,38,135
;310/12,13,14,15 ;346/29 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Goldberg; Gerald
Parent Case Text
This application is a division of application Ser. No. 41,485,
filed May 28, 1970 now U.S. Pat. No. 3,696,204.
Claims
I claim:
1. A transducer comprising:
a magnetic structure defining a magnetic flux field;
first and second inductance coils magnetically coupled and
constrained for movement in said magnetic flux field along a pair
of angularly associated axes of a two axes system;
said first and second coils being disposed in spaced apart
relationship in said magnetic flux field and having magnetically
coupled portions in a pair of planes having aspects orthogonal each
to the other;
means for changing the position of said coils simultaneously and
alone, each relative to the other; and
an element connected to said means and arranged for movement to any
selected position in said system according to the simultaneous and
combined movement of said coils.
2. A transducer according to claim 1 wherein the magnetic structure
comprises a rail, said second coil mounted about said rail and
disposed in a plane extending transversely of said rail for
movement along one of said axes, said first coil supported in a
plane and spaced from said second coil in said flux field for
reciprocation relative to said second coil.
3. A transducer comprising:
a first member mounted for reciprocation;
a second member mounted for movement in a lineal path transversely
of the direction of reciprocation;
coupling means for simultaneously moving said first and second
members in said lineal path; and
electrodynamic means and mechanical means associated in
input-output relationship with said first and second members for
translating power in one form to power in another, said
electrodynamic means including:
a magnetic rail defining a magnetic flux field; and
a first electrical inductance coil connected to said second member
and coupleably associated in said magnetic flux field for movement
longitudinally of said magnetic rail along said lineal path.
4. A transducer according to claim 3 wherein said electrodynamic
means also includes:
a second electrical inductance coil coupleably associated in said
magnetic flux field and connected for reciprocation with said first
member.
5. A transducer according to claim 4 wherein said electrodynamic
means comprises a magnet assembly including said magnetic rail and
defining an air gap with said magnetic flux field therein, and
wherein said first and second electrical inductance coils are
disposed in a pair of spaced apart planes in said air gap for
movement with said first and second members.
6. A transducer according to claim 5 wherein said magnetic
structure comprises:
an elongated section of magnetic material spaced from said rail and
defining therebetween said air gap; and wherein
said first inductance coil is arranged for reciprocation in said
air gap in a direction transverse to said section and said rail;
and
said second inductance coil is circumposed about said rail for
movement longitudinally thereof.
7. A motor according to claim 6 characterized by an output element
carried from said first member and translocatable in response to
electrical effects in said first and second inductance coils.
8. A method of converting electrical input to mechanical output
comprising:
generating a first electrical effect in a first induction coil
mounted in a magnetic flux field to produce movement in one of a
pair of angularly associated axes;
generating a second electrical effect in a second induction coil
disposed in spaced apart relationship to said first induction coil
in said magnetic flux field and magnetically coupled to said first
induction coil in a pair of planes having aspects orthogonal each
to the other to produce movement in the remaining one of said pair
of angularly associated axes; and
simultaneously applying the forces of said movement for
translocating an output element.
9. A method according to claim 8 characterized by moving the
induction coils magnetomotively in said magnetic flux field
responsively to the effects generated.
10. A method according to claim 9 characterized by moving in
intersecting paths and in response to coil move-ment a pair of
members connected to said output element and coupled each to the
other.
Description
FIELD OF THE INVENTION
This invention relates to teleprinters and printing methods.
Particularly the invention relates to a mechanism in a teleprinter
for controlling a carrier to present any selected die supported
thereby at each in a succession of printing stations for
reproducing a line of intelligence.
BACKGROUND OF THE INVENTION
A teleprinter adapted as a terminal is often associated with an
intelligence storage or bank for intelligence translation.
Conventionally, a teleprinter has a carrier for dies of a plurality
of symbols or characters from which selection is made for printing.
The dies are arranged selectively to be driven at a printing
station by an impeller into a printing mode.
In one class of teleprinters, the web on which intelligence is
reproduced is immobilized from horizontal shifting during printing.
To effect printing then, the impeller is adapted for translocation
in steps to successive adjoining horizontally aligned stations. At
each successive station a selected die is presented; and to that
end means are adapted for moving the die carrier to successive
stations and for adjusting the carrier to align a selected die with
the impeller.
In the art of intelligence recovery, significant resources have
been and currently are being invested to increase the speed of
intelligence reproduction to maximize the availability of
intelligence bank or storage facilities or the intelligence
contained therein. Production costs of improvements which
heretofore have been developed parallel increase in the speed of
intelligence reproduction achieved thereby and accordingly, tend to
limit exploitation of the innovations.
It is an object of the present invention rapidly to translate
intelligence.
It is another object of the invention to minimize the cost of
intelligence translation.
It is yet another object of the invention to provide an improved
motor.
It is a further object of the invention to provide an improved
terminal for a data storage system.
Moreover, it is an object of the invention to provide an improved
teleprinter and method of printing.
SUMMARY OF THE INVENTION
To effect the foregoing and other objects which shall become
apparent from ensuing description, the present invention has
adapted for teleprinters a transducer of the type which is
described and claimed in two contemporaneously filed applications
which have been assigned to the assignee of the present application
and are herein incorporated by reference and are further identified
as follows: (1) Ser. No. 41,486, now U.S. Pat. No. 3,641,583, of
the inventor of the present application and Jerome L. DeBoo, titled
ELECTRODYNAMIC TRANSDUCER and (2) Ser. No. 41,335, now U.S. Pat.
No. 3,696,204, of Allan G. Wallskog, titled PRINTER. That is to
say, in a teleprinter, a plurality of dies which comprise its
printing means are supported in a plurality of rows and columns
from a carrier which is moveably arranged for disposition at a
printing station. A linear electric motor with a combination output
having axial components in a plurality of dimensions is adapted for
adjusting the carrier to present any selected die at the printing
station.
From another aspect, the foregoing objects are achieved according
to the invention summarized as aforesaid with means for moving any
selected die between passive and printing modes and additional
means associated with the motor for translocating said moving means
to successive printing stations.
From yet another aspect, said objects are achieved by providing a
motor which is adaptable for a teleprinter. The transducer is
characterized by an assembly of first and second members arranged
for relative and simultaneous movement in a pair of lineal
transversely extending paths. Electrodynamic means and mechanical
means associated in input-output relationship with said assembly
are adapted for translating power in one form to power in another.
Thereby, through the use of electricity, a type box can be moved to
any selected station for printing.
BRIEF DESCRIPTION OF THE DRAWINGS
In the ensuing detailed description, reference is had to the
accompanying drawings on which:
FIG. 1 is a perspective view of the invention embodied in a
teleprinter and looking toward the front thereof from its
platen;
FIG. 2 is a perspective view of the teleprinter looking from the
front thereof toward the platen, parts being broken away for
illustration;
FIG. 3 is a view according to the section line 3--3 on FIG. 1;
FIG. 4 is a view according to the section line 4--4 on FIG. 1;
and
FIG. 5 is an electrical scheme for the teleprinter.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENT
Having reference now more particularly to the accompanying
drawings, a teleprinter, only sufficient of which is shown to
illustrate the invention, is generally designated 10. The
teleprinter comprises a platen 12 which may be of conventional
construction and cylindrical configuration and is immobilized from
lateral or horizontal shifting. The platen is adapted for
supporting a web 14 (FIG. 3), such as paper or the like on which
intelligence is reproduced, and is rotatable about its longitudinal
and horizontally extending axis for shifting the web vertically a
line at a time in a conventional manner. Means (not shown) which
may be conventional are arranged for supporting an inked ribbon 16
longitudinally of the axis of platen 12 and spaced slightly
forwardly of the web.
A box or carrier 18 is disposed slightly forwardly from ribbon 16;
and is arranged for movement horizontally, longitudinally of the
axis of platen 12. The carrier supports a font of type or dies 20
(FIG. 1) which are arranged in horizontal rows 19 and in vertical
columns 21 only some of which are numbered. In accordance with
conventional practice, the dies may be faced with alphanumeric
characters and selected other designs or symbols; and each has an
exposed shank 22 which extends forwardly (to the right in FIG. 4)
from the carrier.
By means not shown, each of the dies 20 is biased or urged
forwardly to a non-print or passive mode in which its printing face
is spaced slightly forwardly from ribbon 16. However, each die is
mounted for movement horizontally transversely of the axis of
platen 12 between its passive or non-print mode and a print mode in
which it has been driven rearwardly against its normal bias into
contact with ribbon 16 for printing in a conventional fashion on
web 14.
Means for moving any selected of dies 20 between passive and
printing modes comprises an impeller or solenoid 24 whose driven
member terminates in a print hammer or striker 26. The latter is
normally biased or urged to a withdrawn or forward position and is
arranged for movement in a path coincident with the path of
movement of a selected die. Moreover, the dimensions of the striker
are such that when the impeller is actuated only a selected die
will be driven toward a print mode.
Carrier 18 is arranged for adjustment vertically as well as
horizontally; and the parts are proportioned such that at any
adjusted position a single one of the dies 20 will be disposed
suitably for printing at a printing station. Teleprinter 10
includes a printing station which moves horizontally a space at a
time, whereby a succession of symbols can be formed to print a line
of intelligence. Accordingly, impeller 24, the position of which
defines a printing station, is arranged for successive horizontal
movements.
In accordance with the present invention, a linear electric motor,
generally designated 28, comprises means for adjusting carrier 18
along a vector having values referable to a pair of orthogonal
coordinates (herein being vertical and horizontal) in a planar or
two axes system to select a die for printing. Moreover, said motor
comprises means for moving said carrier to successive printing
stations; and said motor also comprises means for translocating
impeller 24 to successive printing stations simultaneously with
movement and adjustment of carrier 18.
Motor 28 is comprised of a permanent magnet 30 and a magnet loop
defining a magnetic circuit. The latter is fashioned from a pair of
horizontally extending parallel magnetic bars or rails 32 and 34
which are preferably of equal length. They have opposed end
portions 36 and 38 which are connected by a magnetic bridge 40 and
opposed end portions 42 and 44 which are connected by a magnetic
bridge 46. Rails 32 and 34 and bridges 40 and 46 are fabricated
from a material of low magnetic reluctance and retentivity, such as
soft iron, said rails being magnetic segments in said magnetic
circuit between which a non-magnetic or air gap 48 is formed.
As illustrated, the permanent magnet may be a rectangular block
which is disposed within the magnetic loop. It is magnetized
through its thickness (its North and South poles being
conventionally designated N and S) with one of its polar faces
secured by a suitable cement to the inner face of rail 32 and its
opposite polar face spaced from and parallel to the inner face of
rail 34. Thereby, a magnetic flux field is generated across gap
48.
In accordance with the teachings of the aforesaid contemporaneously
filed applications, or one of them, a pair of electrical coils 50
and 52, respectively, have coil segments 54 and 56 which are
disposed in air gap 48 whereby upon development of an electrical
effect in said coils, they become inductively coupled in the
magnetic flux field. Coil 50 is circumposed about rail 34 with the
direction of its winding in segment 54 cutting the lines of flux in
air gap 48 such that when a current passes through said coil a
magnetomotive force is generated impelling coil 50 longitudinally
of said rail in a horizontal path defined thereby and parallel to
rows 19 of said dies. Segment 56 of coil 52 is disposed in a plane
which is parallel to a plane in which segment 54 is disposed.
However, the direction of the winding of segment 56 is such that
upon the passage of a current through coil 52, a magnetomotive
force will be generated for driving said coil in a vertical path
parallel to columns 21 of said dies and normal to the path along
which coil 50 is moveable.
Coils 50 and 52 are physically connected through the agency of a
coupler fashioned as a trolley 58 such that when coil 50 moves,
coil 52 will also move horizontally with coil 50. On the other
hand, when coil 52 is caused to move vertically, such movement is
independent of movement of coil 50.
Trolley 58 has a body 60 from which are supported a plurality of
upper and lower guide rollers 62. They engage a pair of opposed
ribs 63 (FIG. 4) fashioned on and longitudinally of the upper and
lower surfaces of rail 34 for moving the trolley longitudinally,
thereof. Coil 50 is rigidly secured to body 60. Thereby, when said
coil moves, trolley 58 will be caused to move horizontally and in a
direction to or fro, corresponding to the direction of current
flowing in said coil.
An output element 64 fashioned as an arm comprises output means
mounted from body 60. The output element engages in a plurality of
guide bearings 66 which are arranged from said body and define a
track for enabling vertical reciprocation thereof. The character
and proportions of the parts are such that the output element is
frictionally gripped by said bearings and will be retained at any
vertical level to which it is driven.
Carrier 18 is secured from the upper end portion of output element
64. Accordingly, an appropriate electromagnetic effect in coil 52
will adjust carrier 18 up or down according to the direction of the
current, the horizontal position of said carrier being governed by
the position of the trolley.
Means associated with motor 28 for translocating impeller 24 to
successive printing stations comprises an electrical coil or
winding 68. It is circumposed about rail 34 and has a vertical
segment 70 with strands extending transversely of said rail 34 and
disposed in air gap 48 such that upon production of an electrical
effect in said coil, a magnetomotive force will be generated
causing coil movement in a horizontal path longitudinally of rail
34.
A bracket 72 which supports impeller 24 is rigidly secured to coil
68 for translocating said impeller horizontally, parallel to rows
19, the direction of translocation being according to the direction
of current flow in said coil. Translocation of the impeller is
facilitated by a plurality of upper and lower rollers 74 which are
carried from bracket 72 and engage opposed ribs 63 for guiding the
impeller longitudinally of rail 34.
Exemplary means for simultaneously adjusting carrier 18 whereby any
selected die is disposed at a printing station and for stepping or
moving said carrier to successive printing stations and also for
correspondingly translocating impeller 24 comprises circuitry 76
(FIG. 5). It comprises signal generating means herein shown as a
character generator 78 adapted to produce three electric outputs,
signals or effects which may be genereated by known means
simultaneously through conducotrs 80, 82 and 84 whenever effects
representative of a character to be reproduced are available. The
outputs through conductors 80 and 84, respectively, represent the
row 19 and column 21 in which a die 20 corresponding to an
available character is disposed. Successive outputs through
conductor 82 may be identical.
The output through conductor 80 is adapted to adjust or drive
carrier 18 vertically; and to that end is connected to a servo
amplifier 86. Amplifier 86 has an additional input through a
conductor 88 from a suitably mounted feed-back sensor 90 which is
adapted to generate a signal according to the instantaneous
vertical position of carrier 18. Amplifier 86 is adapted
algebraically to add its inputs through conductors 80 and 88 to
produce an output for vertically adjusting carrier 18 from any
position at which it is disposed to a selected ensuing position for
printing such available character.
An output wire 92 connects amplifier 86 to electrical coil 52. Said
coil together with coils 50 and 68 are connected to a plane of
reference herein shown as ground 94.
The output through conductor 82 is connected to a column counter 96
through a lead 98 for generating a signal in a wire 100 which
connects the column counter to a servo amplifier 102. Suitably
mounted feed-back means 104, which may be of any well-known
construction, generates a signal according to the instantaneous
position of impeller 24. It is applied through a lead 106 as an
input to amplifier 102 where it is algebraically added to the input
through wire 100 for generating an amplifier output through a
conductor 108. The latter provides an input to coil 68, whereby for
each of a succession of characters, the impeller is moved
horizontally one space to an ensuing printing station.
The output of character generator 78 through conductor 82 is also
imposed on impeller 24 through a delay circuit 110. Its output is
connected to the striker actuating coil (not shown) of said
impeller through a conductor 112. The construction of the delay
circuit is such that actuation of striker 26 is held in abeyance
after a signal indicating character availability for a sufficient
period to permit movement and adjustment of carrier 18 and
translocation of said impeller.
The output through conductor 84 is adapted to adjust or drive
carrier 18 horizontally; and to that end it is connected to an
adder 114. The latter is adapted algebraically to add the signal
from conductor 84 to an input from column counter 96 through a lead
116. The resultant output signal of the adder thereby considers the
column of a selected die and the station at which it is to be
printed. A conductor 118 imposes the output signal of the adder as
an input to a servo amplifier 120. The amplifier produces an output
by algebraically adding said last input to another input through a
lead 122 from a feed-back sensor 124 which is suitably arranged for
generating a signal corresponding to the instantaneous horizontal
position of carrier 18.
Coil 50 is connected to amplifier 120 through a conductor 126.
Thereby an effect can be produced for moving and adjusting carrier
18 horizontally such that the column of the character to be
reproduced is aligned with striker 26 at an appropriate printing
station.
In consequence of the foregoing, through the agency of a linear
electric motor with plural outputs, simultaneously electromagnetic
forces can be applied tending to adjust and move carrier 18
vertically and horizontally in response to signals representative
of: (1) a character to be reproduced and (2) a position of
horizontal succession. Thereby, a die corresponding to such
character can be aligned at a proper printing station, while
impeller 24 is stepped or advanced by an output from said motor
from an existing to the next ensuing printing station. Moreover, in
the present embodiment, adjustment and movement of carrier 18 will
be along a path comprised of a pair of values corresponding to
intersecting coordinates in a planar two axes system and
correlatable to effects which may be generated simultaneously in
coils 50 and 52.
As many modifications in the described construction could be
conceived, and as many changes could be made therein without
departing from the spirit and scope of the claims, it is intended
that all matter contained in the accompanying specification shall
be considered as illustrative only and not in a limiting sense.
* * * * *