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Патент USA US3087047

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April 23, 1963
‘
-
w. B. HUDDLESTON
3,037,037
MANUALLY OPERATED KEY FOR ELECTRONIC KEYER
Filed Sept. 23, 1960
'2 Sheets-Sheet 1
INVENTOR.’
BY
MKW
ATTORNEY
April 23, 1963
w. B. HUDD'LESTON
3,087,037
MANUALLY OPERATED KEY FOR ELECTRONIC KEYER
Filed Sept. 25, 1960
'2 Sheets-Sheet 2
W////0m 15’. f/udd/eJ/0/7
INVENTOR.
ZZMJW
"nite States
‘3,0815%?
atent
Patented Apr. 23, 1963
1
2
3,087,037
the contacts when released, and means for damping the
movement of the element.
MANUALLY OPERATED KEY FOR ELECTRONIC
KEYER
William B. Huddleston, 1842 Ojeman St., Houston, Tex.
Filed Sept. 23, 1960, Ser. No. 57,966
3 Claims. (QR. ?lth-153)
This invention relates to a device for opening and clos
ing electrical circuits, and more particularly to a manual
ly operated switch or telegraph key for use with an elec
tronic keying device for the transmission of radio telegraph
signals.
In the operation of radio telegraph apparatus, as com
7 A still further object of the invention is to provide a
manual operable circuit making and breaking instrument
of the kind mentioned which is of simple design and
rugged construction, whose sensitivity or operating char
acteristics are easily adjusted and whose parts are easily
replaced for purposes of repair.
The above and other important objects and advantages
of the invention may best be understood from the follow
ing detailed description, constituting a speci?cation of
the same, when considered in conjunction with the an
nexed drawings, wherein—
monly practiced, electronic circuits are employed includ
FIGURE 1 is a perspective view of a preferred embodi
ing electronic keying apparatus which functions to open 15 ment of the invention;
‘and close the circuits to form dots and dashes. For this
FIGURE 2 is a central, horizontal, cross-sectional view
purpose, it is customary to use an electronic keyer having
circuits which are adapted to be separately energized and
of the embodiment of the invention as illustrated in FIG
URE 1;
one of which when closed functions to cause the intermit
FIGURE 3 is a fragmentary, cross-sectional view, taken
tent operation of the radio apparatus to produce short 20 along the line 3-—3 of FIGURE 2, looking in the direc
signals or dots while the other circuit when closed func
tion indicated by the arrows;
tions to cause the intermittent operation of the apparatus
FIGURE 4 is a top plan view, partly in cross-section,
to produce somewhat longer signals or dashes. Electronic
illustrating a modi?ed ‘form of the invention;
keying apparatus of this kind is well known and is used
FIGURE 5 is an end elevational view of the embodi
in conjunction with a manually operable switch or key 25 ment of the invention illustrated in FIGURE 4, looking
by which the circuits of the apparatus are separately
at the left end of FIGURE 4;
opened and closed. By the use of such apparatus it be
FIGURE 6 is a view similar to that of FIGURE 5
comes unnecessary for the operator to open and close the
looking at the right end of the embodiment of the inven.
circuits for each dot or dash which is to be transmitted,
tion as illustrated in FIGURE 4 and rotated ninety de
but a series of dots or dashes may be transmitted by mere 30 grees about the longitudinal axis of the device as shown
ly holding the key in one position or the other for a suit
able period. A switch or telegraph key which is to be
in FIGURE 4;
FIGURE 7 is a view similar to that of FIGURE 4
illustrating a further modi?ed form of the invention; and
used in this type of equipment must be of a very delicate
ly balanced or sensitive type, in order to assure that the
FIGURE 8 is an end elevational view of the embodi
circuits are easily closed and opened in response to manual 35 ment illustrated in FIGURE 7, looking at the left end of
operation of the key and also to provide for quick opening
FIGURE 7.
of the circuits when the key is released. It is for the
purpose of providing a key of improved construction and
sensitivity that the present invention has been developed.
The invention has for an important object the provision
of a key for the operation of electrical circuits embodying
spaced apart contacts and a movable element positioned
Referring now to the drawings in greater detail the
embodiment of the invention illustrated in FIGURES 1,
2 and 3 includes a suitable support or base, generally
indicated at '10, which may be formed of any convenient
material, preferably of a size and weight to hold the
device stationary during the operation of the key, and
having an upright, front wall portion 12 upon which the
operating parts of the key are mounted.
movable element to a position out of contact with either 45
The wall portion 12 has an opening 14 therethrough
of the contacts when the movable element is released.
and a contact and key lever supporting frame 16, of
Another object of the invention is to provide a key of
generally U shape, is mounted on the rear face of the
wall '12 extending rearwardly therefrom at the level of
the kind mentioned in which the means for returning the
the opening. The frame 16 is formed of suitable elec
movable element to its neutral or out-of-contact position
is designed to interpose a minimum of resistance to the
trically insulating material, such as plastic, or the like,
and may be attached to the wall 12 in any convenient
movement of the element into engagement with either of
for manual movement into and out of contact with either
of said contacts and including means for returning the
the contacts, but which at the same time is e?ective to
move the element to out-of-contact position with a mini
mum of delay when the element is released.
manner,,_ as by means of screws 18 extending through the
wall 12 on opposite sides of the opening 14 and into the,
ends of the arms of the frame.
A further object of the invention is to provide a torsion 55 The arms of the frame 16 are provided with internally
threaded openings 20, within which contact elements 22
mount for the movable element of a telegraph key by
are threadably inserted, which contact elements extend
which the element is moved to and held in out-of-contact
inwardly of the arms, with the inner ends of the elements
position when the element is released but which is of im
in spaced apart relation. Each of the openings 20 is also
proved sensitivity to manual movement of the element to
provided
with a screw 24, provided outwardly of the outer
60
circuit closing position.
end of the contact element 22 therein, and by which an
Another object of the invention is the provision of the
electrical conductor 26 may be clamped to the contact ele
key of the type referred to having spaced apart contacts
and a movable element supported between the contacts
and including means for causing the element to move in
ment to connect the same into an electrical circuit.
By
this arrangement, it will be apparent that the contact ele
65 ments 22 may be adjusted in the openings 20 to space the
a substantially straight path during movement of the ele
inner ends of the contact elements at any desired distance
ment into and out of engagement with the contacts.
apart. The contact elements 22 may, of course, be formed
A further object of the invention is to provide a contact
of any suitable electrical conducting material, and may
key of the character described having spaced apart con
be provided at their inner ends with contact faces formed
tacts, a movable element mounted for movement into 70 of silver or other suitable highly conductive material.
and out of contact with either of the contacts and which
The frame 16 is also provided with a bottom slot v38,
is arranged to assume an intermediate position between
formed in the bottom of the U and which opens outwardly
3,987,037
43
3
between the arms of the U, and the frame is also provided
means, such as the screws 46’. The disc 42’ has a central
with internally threaded opposite side openings 30‘ open
ing into the slot 28, ‘for the reception of clamping screws
opening, through which a screw 56 is extended into the
inner end of a key lever 48', which extends into the bore
32. A screw 34 is threadably inserted in one of the side
of the cylinder between the contact elements 22', and
which carry the contact pads 54', positioned for contact
openings 30, outwardly of the clamping screw 32 therein,
the screws 32 and 34, to connect the same into an elec
with the inner ends of the contact elements 22’. The key
lever 48' is also provided with an opening therethrough
trical circuit.
through which a damping element in the form of a ?exible
The opening 141 is formed with an external counterbore
portion 40, within the bottom of which a thin, ?exible
disc 42 is positioned, the disc being retained in the counter
bore by means of a retainer ring 44, positioned in the
counterbore and removably held therein as by means of
screws 46, or the like. The disc 42 is preferably ‘formed
of thin, ‘sheet metal, and has a central opening there
through through which a key lever 48 is extended between
the arms of the frame 16, the key lever being suitably
secured to the disc as by means of soldering and having
attached to its outer end a suitable plate 50' ‘for manual
Wire 53 extends, which is disposed diametrically of the
bore of the cylinder and anchored at its opposite ends in
the cylinder wall.
by which a conductor 38v is clampingly engaged between
operation of the lever. A ?at, ?exible metallic spring
blade 52 is connected to the inner end of the lever 48, as
by means of an end slot in the lever into which one end of
the spring is extended, the spring extending inwardly be
yond the inner end of the lever 48 between the arms of
the frame and into the slot 28, where the other end por
tion of the spring is clamped securely between the screws
32. The spring blade 52 may be provided with suitable
contact pads 54, located for movement into and out of
contact with the inner ends of the contact elements 22
by operation of the lever, to make and break electrical con 30
nection between conductors 26 and the conductor 38
through the spring.
The conductors 26 and 38 are suitably connected into
electronic keying circuits of conventional construction, so
The key lever 48' may be provided with a suitable
operating know or plate, not shown, such as the plate 50
previously described, by which the lever is actuated.
' The contact elements 22.’ are suitably connected with
conductors, not shown, such as the conductors 2'6, and the
lever 48' is likewise suitably connected with a conductor,
not shown, such as the conductor 38, whereby the key
may be connected into the electrical circuits of the elec
tronic keying device, in the manner previously described.
The form of the invention illustrated in FIGURES 4,
5 and 6 is operated in the- same manner as previously de
scribed, the key lever 48' being moved in one direction to
close one of the circuits of the electronic keying device
and in the other direction to close the other circuit thereof,
and the lever being returned to its centralized out-of
contact position when released by the action of the ?exible
disc 42’. In the operation of the lever 48', the damping
Wire 58 will be effective to hold the lever against vibration
1which might other-wise interfere with the sensitivity of the
ey.
A further modi?cation of ‘the invention is illustrated in
FIGURES 7 and 8, wherein a supporting frame lid" is
of cylindrical shape, similar to the supporting frame
that upon movement of the lever in one direction, one
16’ and the key lever 48” is supported at one end on
circuit will be closed to actuate the electronic keying device
to transmit dashes, and upon movement of the lever in the
other direction, another circuit will be closed to cause the
electronic keying device to transmit dots.
It will be apparent that the ?exible disc 14 will be
effective to hold the key ‘lever in a centralized position
when the lever is released, so that the spring blade 52
will be centrally positioned between and out of contact
with the contact elements 22 to open both of the circuits
the frame by means of a thin, ?exible metallic strip 60‘,
‘extending diametrically across the frame at one end
thereof and into an end slot 62 formed in the end of
the lever. The lever 48' extends from end to end of
the cylinder and behind, one end thereof, and may be pro
vided at its outer end with an operating know or plate,
not shown, similar to the plate 5%. In other respects, this
form of the invention is constructed in the same manner
as the form of the invention illustrated in FIGURES 4,
of the electronic keying device. Thus, in the operation of
5 and 6‘ and is similarly ‘operated. It will be apparent
the key, the lever may be moved in one direction to close
that the torsion element ‘60 performs a similar function
to the ?exible disc 1%2' in that it acts to return the lever
46’ to ‘a central out~of~contact position (when the lever
is released.
It will thus be seen ‘that the invention, constructed as
one of the circuits to transmit dashes or to move the lever
into another direction to close the other circuit to transmit
dots, the respective circuits being closed for as long a
period as may be desired to transmit the desired signals.
By the use of this apparatus, it will also be apparent that
signal dots or dashes may be transmitted or by holding
the circuits closed for predetermined periods of time, a
described above, provides a manually operable key for
electrical circuits, which is of simple design and rugged
construction, and in which the sensitivity of the key
may be ?nely adjusted to accommodate individual re
series of dots or ‘dashes may be transmitted. The inven
tion also possesses the advantage that the contact elements
22 may be adjusted to require more or less movement of
quirements, and also in which the key lever is restrained
‘against vibrational movement during its. operation.
the key lever tov establish contact, so that the sensitivity
of the key may be increased or decreased, as desired.
A somewhat modi?ed form of‘ the invention is illus
trated in FIGURES 4, 5 and 6, wherein the supporting
base 16 has been left out for purposes of simpli?cation.
In this form of the invention, the key lever supporting
The invention is disclosed herein in connection with
certain speci?c embodiments of the same, but it will be
understood that these are intended by way of illustration
only and that various changes may be made in the con
struction and arrangement of the parts within the spirit
of the invention and the scope of the appended claims.
Having thus clearly shown and described the inven
frame 16’ takes the form of a cylinder of suitable ma
tion, what is claimed as new and desired to secure by
base, not shown, in a manner similar to that described in 65 Letters Patent is:
terial, such as plastic, which is attached to the supporting
connection with the form of the invention illustrated in
1. In a manually operable key for opening and closing
FIGURES l, 2 and 3. The cylinder 16’ being provided
with opposite contact elements 22', threadably extended
through suitable openings in the cylinder with the inner
ends of the elements positioned in spaced apart relation
electrical circuits, a support, spaced apart electrical con
within the bore of the cylinder. The cylinder 16’ has. an
tacts on the support, a manually movable member, a
?exible element connecting the member to the support,
electrical contact means on the member including an
elongated ?exible blade positioned for flexing movement
into engagement with one of said contacts upon move
ment of the member in one direction of ?exing movement
of said element and with the other of said contacts upon
of the counterbore and retained therein, as by means of
the retainer ring 44', held in the counterbore by suitable 75 movement of the member in another direction of ?exing
outwardly opening counterbore portion 40' at one end,
and a thin, ?exible disc 42’ is positioned in the bottom
3,087,037
5
6
movement of said element, and vibration damping means
on the support positioned for engagement with the mem
ber at a location spaced longitudinally from said element
aperture :therethrough, an elongated manually operable
member extending through said aperture and opening and
to resist vibrational movement of the member.
connected to said element to support the member for
2. In a manually operable key for opening and closing
electrical circuits, a support having an opening there
through, spaced apart electrical contacts on the support,
a manually movable member positioned in the opening
angular movement relative to the support by ?exing of
to the support in the opening, and having a central
the element, electrical contact means including an e1on~
gated, ?exible blade connected at one end to the member
for ?exing movement into engagement with one of said
and extending between said contacts, a ?exible element
contacts upon angular movement of the member in one
forming a connection bet-ween said member and support 10 ‘direction and with the other of said contacts upon angular
to yieldingly hold the member in a centralllized position
movement of the member in the other direction and means
between said contacts, contact means on the member
for anchoring the other end of said blade to the support
positioned for movement into and out of engagement with
to resist angular vibrational movement of said member
said contacts upon movement of the member toward and
in either direction.
away from the contacts and vibration damping means on 15
the support positioned for engagement with said member
References Cited in the ?le of this patent
at a location remote from said element to resist vibra
UNITED STATES PATENTS
tional movement of said member.
3. In a manually operable key for opening and closing
1,204,675
electrical circuits, a support having an opening there 20
through, ‘spaced apart electrical contacts on the support
on opposite sides of :the axis of the opening, a ?exible,
disk-like e-lement connected about its external periphery
1,893,179‘
2,128,427
2,383,973
2,814,678
Lyon ________________ __ Nov. 14, 1916
1933
1938
1945
Parsons _______________ __ Jan. 3,
Means _______________ __ Aug. 30,
Jones _________________ __ Sept. 4,
McFarland __________ __ Nov. 26,
1957
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