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Патент USA US3065451

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Nov. 20, 1962
G. H, LEONARD
MEANS FOR CONNECTING MULTI-CONDUCTOR CABLES
Filed Feb. 9, 1959
3,065,441
NOV- 20, 1962
G. H. LEONARD
_
7 3,065,441
MEANS FOR CONNECTING _MULTI,—CONDUCTOR CABLES
Filed Feb. 9, 1959
5 Sheets—Sheet 2
Nov. 20, 1962
G. H. LEONARD
3,065,441
MEANS FOR CONNECTING MULTI-CONDUCTOR CABLES
Filed Feb. 9, 1959
5 Sheets-Sheet 3
Nov. 20, 1962
G. H. LEONARD '
3,065,441
MEANS FOR CONNECTING MULTI-CONDUCTOR CABLES
Filed Feb. 9, 1959
5 Sheets-Sheet 4
Nov. 20, 1962
3,065,441
G. H. LEONARD
MEANS FOR CONNECTING MULTI-CONDUCTOR CABLES
Filed Feb. 9, 1959
5 Sheets-Sheet 5
United States Patent 0 ” ice
3,0§5,44l
Patented Nov. 20, 1962
2
1
FIGURE 3 illustrates in perspective a stand-off element
1
3,065,441
'
MEANS FOR CONNECTING MULTI-CONDUCTOR
CABLES
George H. Leonard, Darien, Conn, assignor to
carried within the housing shell;
FIGURE 4 is a sectional side view of the connector
’ taken substantially along the center line of FIGURES 1a
AMP Incorporated, Harrisburg, Pa.
Filed Feb. R, 1959, Ser. No. ‘791,966
27 Claims. (Cl. 339-49)
and 1b, but with the units being in closed interconnected
position and certain parts being shown in elevation for
purposes of illustration;
cludes a pair of panels for carrying the connecting ele
ready for separation, parts being broken away for the sake
ments, one of the panels typically being the outlet for an
of clarity;
FIGURE 5 is a view similar to FIGURE 4, but with
This invention relates in general to a separable electrical
the connector units operatively partly disconnected;
FIGURE 6 is a view similar to FIGURE 4, but with
connector for multi~conductor cables, and more particu 10
the connector units operatively fully disconnected and
larly to a contact assembly for such connectors which in
_
FIGURE 7 is a sectional view along lines 7—7 of
electrical device, such as a computer, and the other being "
secured in a portable housing adapted to be coupled by 15 FIGURE 4;
FIGURE 8 is an exploded view of the actuating lever
actuation of a connecting mechanism to the device outlet.
and cam arrangement of the connector unit of FIG
As design desiderata, the contact assembly of such a
URE lb;
connector electrically should provide a stable and abso
FIGURE 9 is a fragmentary sectional view on an en
lutely reliable contact over a wide temperature range for
high and low voltage level circuits with a negligible noise 20 larged scale of the contact elements and supporting panels
when the connector units are closed as in FIGURE 4;
introduction factor, and mechanically should have a long
life under hard usage while being simple, inexpensive,
easy to disassemble and reassemble without the use of
tooling, with the component parts for the mating sections
FIGURE 10 is a view similar to FIGURE 9, but taken
when the connector units are disposed as in FIGURE 5;
FIGURE 11 is a sectional view taken along lines 11—11
being reversible and interchangeable to reduce. the num 25 of FIGURE 9;
FIGURE 12 is an enlarged perspective view of a con
ber of different parts to a minimum. Overall, the con
tact element attached to a wire connector;
nector should have no critical tolerances, but the parts
FIGURE 13 is an enlarged fragmentary view of a panel
should inter?t with precision while being simple and fool
element carried by either one of the units of the connector
proof in‘ operation.
A wide variety of connectors are available in the art, 30 ‘assembly to illustrate the details of an aperture in which
a contact element may be inserted;
but all in more or less respects fail to provide the desired
FIGURE 14 is an enlarged, perspective view of the
characteristics.
The principal advantage of the present invention is the
panel element;
provision of components by which the aforesaid design
FIGURE 15 is an enlarged, perspective view showing
desiderata may be united in one construction of a multi
35 the opposite side of a panel element similar to that of
contact connector.
The embodiment to be described as illustrative of the
present invention is also advantageous in that the operating
FIGURE 1.4;
'
FIGURE 16 is a perspective 'view of a bracket’ for
mounting a panel element in the connector unit of FIG
URE In; >
mechanism and associated panel are housed in a portable
FIGURE 17 is a plan view of the strain relief assembly
unit adapted‘ to be mechanically coupled, with or without 40
for introducing a cable into the connector unit of FIG
the contact elements being engaged, to a similar panel
URE 1b;
FIGURE 18 is a side view, partly in section and partly
coupling action smoothly bringing the contact elements
broken away for clarity, of the strain relief assembly; and
in the sets into engagement simultaneously.
FIGURE 19 is a perspective view of a grommet or pack
Other advantages and attainments of the present inven 45
ing element carried within the strain relief assembly.
tion will become apparent to those skilled in the art upon
In the drawings the illustrative embodiment of the sepa
an examination of the drawings and the following detailed
rable connector assembly of the present invention in gen
speci?cation which show and describe a preferred embodi
eral includes a pair of units A and B adapted to be brought
ment; it» is’ to‘ be'understo'od; however, that this embodi
ment is not intended to be exhaustive nor limiting on the 50 operatively together to complete a multiplicity of circuit
paths through the assembly, unit A being set for example
invention but, on the contrary, is given for purposes of
mounted on a stationary electrical device, the contact
illustration in order that others skilled in the art may fully
understand the invention and the principles thereof and
the manner of applying it in practical use so that they may
in the control board‘ or some convenient portion in the
housing 2, fragmentarily shown in FIGURE la, of a com
puting, printing or accounting machine or similar device,
modify and adapt it in various forms, each as may be best 55 and constituting the electrical coupling into the internal
suited to the conditions of a particular use.
electrical circuitry of the device. Unit B comprises a
In the drawings:
portable coupling mechanism serving to support and con
FIGURE 1a and FIGURE 1b are perspective views of
nect selectively the various wires of an external cable 4
an'embodiment of a separable connector assembly accord
to the appropriate wires brought to unit A.
ing to the present-invention, the pair of units constituting 60 Units A and B each include a panel 6a and 6b carrying,
the assembly being separated but in alignment ready to be
preferably by a releasable snap-?t arrangement in aper;
tures 8a and 8b, cooperating sets of contact elements ltla
connected;
FIGURE 2 is a perspective view illustrating the housing
and Nb which terminate the respective sets of conductor
shell for the connector unit of FIGURE 1b;
wires 12a and 12b to be electrically coupled when the
3,065,441
units are operatively brought together. It will be appreci
travel of latch end 48 therein to seat notch 46 fully over
ated that each assembly of an A and B unit may accommo
date as many connections as desired, a typical embodi
the bottom edge of shorter slot 42, FIGURE 4.
For mounting the panels in assembly units A and B, a
rib 54 extends around the panel periphery from substan
tially the mid-point of the panel thickness, except for dis
ment providing 200 circuit connections, while there addi
tionally may be incorporated in a particular electrical in
stallation several A units to which any one or more of
several B units may be joined. Further, it is contemplated
continuities at each of the panel corners. Flange 2G‘ is re
duced in thickness at the panel corners to de?ne with rib
54 shoulders 56, FIGURES 14 and 15. In unit A rib
that the pair of panel and contact connector elements
may alone comprise the units of the assembly according
54a is received in groove 58 of a ‘frame or bracket 60
to the requirements of a particular use, all as will become 10 adapted to be a?ixed to machine housing 2, as by bolts
apparent from the followingdetailed description.
62 in FIGURE 1a, which frame for convenience in as
Certain of the parts comprising units A and B of the
sembly preferably is segmented, for example, in four
illustrated embodiment are advantageously of identical
similar corner segments, one segment 64 being shown in
construction and character. In the description and draw
FIGURE 16 and in phantom in position on panelo in
ings such parts are designated by a given reference nu 15 FIGURE 15 . Each segment 64 carries a semi-cylindrical
meral when referred to in general, an “a” or “b” being
guide block 66 curved to ?t between shoulder 56 around
appended to the numeral to indicate their incorporation
the panel corners and of a length to upstand well beyond
in either unit A or unit B respectively.
the panel face.
For achieving simplicity in fabrication and assembly
Housing 52, which may be a shell cast of a suitable
panels 6a and 6b advantageously are identical and of rela 20 metal such as a zinc or a lightweight aluminum alloy, of
tively hard, molded insulation material, and of generally
unit B is open at one side to receive panel 611, FIGURES
square con?guration. The contact receiving apertures 8,
4 to 7. The ends of a series of integral ribs 68 provide
FIGURES 14 and 15, usually in rows and columns, ex
stops against which the sides of rib 54b abut for position
tend through the ?at main body portionlil of the panels
ing the outside panel face substantially ?ush with the
each aperture preferably having locator indicia, such as 26 edges 70 de?ning the housing opening. Approximately
a number not shown, formed during molding of the panel.
centrally of housing 52 is a reentrant hollow standard 72
As best shown in FIGURES 9 to 11 and 13, the passage
terminating in an internally threaded spindle 74 in align
way de?ned by each aperture is generally rectangular
ment with bolt hole 763 of keeper plate 34b so that bolt
and extends straight through the panel body. From the
78 passed therethrough into spindle 74 ‘serves to clamp
30
top wall of the aperture, however, an integral projection
panel 6b rigidly in the housing. If desired a cylindrical
de?nes inclined wall portions 13 and 14 which symmetri
spacer 80 may be interposed between spindle 74 and
cally converge inwardly from both faces of the panel to
keeper plate 34b.
a ?at central portion 15 where the aperture is essentially
From the foregoing it should be observed that a panel
reduced in cross-section. A pair of stops I6 and 18 ex
6 may be set in either of units A or B with either panel
tending inwardly from the sidewalls centrally of the aper 35 vface exposed. Thus, a particular setting of panel 6a in
ture each provide stop shoulders symmetrically facing
unit A, such as is shown in FIGURE la with bead 24a
opposite ends of the aperture. Extending along the bot~
facing outwardly of the associated machine housing 2 and
tom wall is a groove 19 all for purposes to be explained.
A ?ange or hood 20 projects outwardly from one face of
the panel brim. A channel 22 extending around body 11.
within ?ange 20 is congruous with a head 24 raised out
wardly from the other face of the panel whereby when two
panels are properly brought together the bead 24a of one
is guided by ?ange 2% in loose inter?tting relation into
groove 22b of the other, FIGURES 4 to 7, for assuring
aligned and substantially parallel planar relative move
ment of the panels. _For axially polarizing the panels,
on each inside wall of ?ange 20 is a pair of bosses 26
which are in alignment with a pair of recesses 28 on the
keeper plate 34a set in one of its four possible orienta
40 tions relative to polarizing recesses 28, ?xes the setting
of panel 6b in unit B in one of eight possible positions
for the units to engage. Otherwise, for the setting shown,
either bead 24b will abut bead 24a or the axial orienta
tion of unit B and panel 61) required to mate polarizing
bosses 26 in ‘recesses 24 will ?nd slot 42a misaligned
with latch end 48, thereby interfering with and prevent
ing coupling of the assembly. Accordingly, in an in
stallation requiring several separable connectors it has
been made possible to assure to at least eight combina
tions that no other than the desired unit B will be coupled
outside wall of bead 24, the spacing of the various pairs 50 to a given unit A.
Referring now to FIGURES 9 to 12, contact elements
10 are shown in detail. To admit of panel reversibility
of bosses being different so that they will interfere with
the admission of head 24 into groove 22 unless the panels
are oriented to bring the desired pair of apertures 8a and
while retaining the wiring ?exibility of snap-in inserts,
8b into opposition.
contact elements 10 are constructed to be insertable or
-
55 released from either face of the panels advantageously
Centrally of body 11 is a generally square aperture 36
without the use of tools. Again, for simplicity in fab
from the corners of which inwardly project integral lugs
rication and assembly the contact inserts are of single,
32 inset from both faces of the panel for ?ush mounting
hermaphrodite
design and of suitable resilient metal,
on either panel side a keeper plate 34, as by threaded bolts
preferably of sheet stock so as to be capable of fabri
36 inserted through bolt holes 38 in lugs 32 and cooperat 60 cation by progressive die-stamping techniques well known
ing with suitably threaded bolt holes 49 in plate 34, FIG
in the art. After formation a series of completed, pre
URES la and 7. Lugs 32 and bolt holes 38 and 40 are
formed blanks conveniently may be left and thus adapted
symmetrically arranged so that keeper plate 34 may be
to be connected by a conventional integral carrier strip
clamped to the desired panel face in any one of four
so handled in reels for feeding to automatic or semi
possible axial orientations for polarization purposes to be‘ 65 automatic terminal applying machines, typi?ed by Handel
made apparent. A slot 42, centrally extends inwardly
Patent No. 2,705,797, issued April 12, 1955, which de
taches the individual contact inserts from the strip and
from an edge of keeper plate 34a, provides at its bottom
lip a seat for a notch 46 in end 4-8 of latch 50 pivotally
af?xes them to conductor wires 12 presented to the ma
chine, preferably by solderless cold-forging or crimping
mounted in housing 52 of unit B. Latch 50, preferably
stamped from suitable ?at sheet metal stock, at its end 70 methods well known in the art, see Macy Patent No.
48 projects through relatively longer slot 44 of keeper plate
2,600,012.’
34b and is adapted to be inserted in slot 4-2 of keeper plate
34a, FIGURES 4 to 7, upon coupling of the assembly
a shank or base portion 84 from the rear end of which
To these purposes contact inserts 10 of each include
longitudinally extends a wire barrel portion 86 for crimp
units, the longer length of slot 44 permitting su?icient 75 ing
on the metal core of wire 12 and, if desired, 8J1 insu
3,065,441
5
lation support barrel portion 88 for gripping the insula
tion of wire 12, the barrel portions being formed from
laterally extending pairs of ears de?ning wire receiving
tion reliability therebetween, for example, when one path
troughs conventional in the art. Upstanding from the
sides of base 84 to a greater height than the height of
plating the base metal of the inserts with gold, silver, or
the like, especially when low voltage signals are to be
transmitted.
To increase the quality of the electrical contact between.
the contact inserts further, it is desired that in the coupling
of the assembly the ultimate areas of engagement of ?ngers
10 160 on plates 162 be automatically prewiped to cleanse
reduced section 15 of the apertures, FIGURE 11, are a
pair of resiliently supported wings 9t} and 92, the free
ends thereof being bent away from one another to pro
vide plates 94- and 96 which cooperate in width and
height with the walls of the aperture to seat the contact
element in a snug ?t. From the forward edge of plate
96 extends an elongated spring arm. 98 inclined down
corrodes, or becomes pitted, etc. the other may yet func
tion.
Contact reliability may be further enhanced by‘
the contact areas of any foreign matter. To this end the
assembly includes a rotary-to-reciprocating motion trans
wardly toward the plane base 84- to bias downwardly
mitting mechanism which, in the coupling or connecting
toward the base plane a contact ?nger 166 which is gen
throw of an operating lever, ?rst moves the panels axially
erally parallel to but offset from the longitudinal axis of 15
toward one another to cause contact ?ngers 1th] to engage I
the insert.
and traverse under pressure de?ned paths of contact longi
Contact ?nger 100 provides the means for
electrically engaging under spring pressure the opposed
tudinally along the associated contact plates 162, thus
contact insert in the opposite panel, the spring arm being
prewiping or scrubbing the contact plates, and then axially
of a length to project the contact ?nger outwardly of
separates the panels to a predetermined distance causing
the panel carrying it. Plate 94 has a side extension 20 the contact ?ngers to be partly withdrawn along the paths
which is bent downwardly and then inwardly toward and
of contact on plates 162 to place the ultimate areas of
in a plane parallel to the base to provide a plate 101 from
the forward end of which extends a contact plate 102
in oifset relation to the longitudinal axis of the insert and
engagement at an intermediate point of the contact paths.
In the illustrated embodiment the rotary-to~reciprocat
ing motion transmitting and coupling mechanism is
in opposition to contact ?nger 100. Contact plate 1%?2 25 mounted in unit B, as best shown in FIGURES 1b, 2 and
is thus disposed so as to be engaged by the opposed con
4 t0 8, and includes latch 50, a circular opening 188 therein
tact ?nger of the mating insert when the panels are
remote from end 48 receiving in pivotal relation a cylin
brought together. The free end of plate 162 is turned
drical cam block 110 which is eccentrically supported for
down to provide a latching detent 1% arranged to snap
rotation between opposed external walls 112 of housing
over the edge of the aperture for retaining the insert in
52 on a pin 114 force ?tted in transversely aligned holes
the panel. A lateral shoulder 1415 of plate 96 together
116 in the rear portion of the housing. Latch 50 is ad
with the forward edge of plate 94 de?ne stop shoulders
mitted into the interior of housing 52 through a slot 118
for engaging stops 16 and 18 as best shown in FIGURES
in standard 72 for projection through keeper plate 34b
9 and 10.
and ultimate engagement with keeper plate 3%, and is
It will be observed that in the symmetry of the aper 35 biased, clockwise in FIGURES 4 through 6, by a tension
ture passageway, two pairs of symmetrically related stop
spring 126 ?xed at one end to housing 52 and at the other
shoulders are provided, i.e. either face of stops 16 and
end to the latch, to urge its end 48 downwardly to seat
18 taken with the face of the panel at the remote end
notch 46 on the lower edge of slot 42. Eccentric cam 110
of the aperture, whereby the contact elements may be
is rotated by operating lever 122 which is provided with
inserted from either side of the panel. Accordingly, on 40 a bracket 124 having a cylindrical bore 126 for receiving
introducing the contact insert into a panel aperture, plate
the cam block and bifurcated to form a clevis for receiving
96 will ?rst engage sloping wall portion 13 or 14, as the
between the arms thereof and stabilizing the pivotal end
case may be, as base portion 84 and ferrules 86 and 38
of latch 58. Flat pins 128 inserted in appropriate slots
ride in groove 1§ and plate 101 on the aperture bottom
serve to key earn 110 for rotation with lever 122, the end
wall. As the insertion force is increased, plate 96 will 45 of which may be enlarged to provide an operating handle
be resiliently cammed downwardly into face-to-face en
139.
gagement with wall portion 15 at the reduced portion
As indicated in ‘FIGURES 4 and 6, lever 122 is rotatable
of the aperture, increasing the downward bias of spring
over approximately 180° between housing stop 132 de?n
arm 98 and acting to press plate 101 and detent 104
ing the closed position of the assembly, FIGURE 4, and
?rmly against the aperture bottom wall until detent 104
stop 134 in the decoupling of the assembly, FIGURE 6.
snaps in place over the aperture edge as shoulder 105
In moving between these stops lever 122 is arranged to
and the forward edge of plate 94 engage stops 16 and
rotate the high point of cam 110 from a position between
18. The contact insert may easily be released when
but below the center line of pin 114 and the bottom edge
desired by raising detent 194 above the aperture edge,
of slot 42, FIGURE 6, clockwise to a position above and
55 beyond the center line, FIGURE 4, thereby relatively
and withdrawing the insert by wire 12.
With each contact ltla seated in one direction in aper
reciprocating latch 54} from a maximum extended position,
tures 8a in panel 6a and each contact 10b seated in re
to the right in FIGURE 6, through a maximum retracted
verse direction in apertures 8b of panel 6b, alignment of
position where the high point of the cam passes the center
the apertures brings contact ?ngers 199a and ltltlb re
to an intermediate forward position.
spectively into alignment with contact plates 1021) and 60 line,
In
operation unit B is manually brought in alignment
102a, FIGURE 10, whereupon direct axial movement of
with unit A, FIGURES la and 1b, except that handle 130
the panels toward one another causes the projecting con
is down adjacent stop 134, and then is moved forwardly
tact ?ngers to enter into the opposed apertures and to
causing guide blocks 66 relatively to enter housing 52
engage and slide on the contact plates under the spring
pressure of spring arms 98a and 98b, FIGURES 9 and 65 between shoulders 56b of panel 6b, guide blocks 66 preter
ably being beveled for easy entry. Should the panels be
11, the tips 196a and 1496b of the contact ?ngers being
properly polarized, unit B may then be slid on guide blocks’
curved inwardly to provide a ramp for camming the
66 until latch end 4% enters slot 42 and notch 46 clicks
?ngers onto the surface of the contact plates. In this
into position, the nose of latch end 48 being beveled so
connection for protecting the exposed, projecting contact
?ngers 1% when the assembly units are separated, ?ange 70 that latch 56 may be cammed upwardly against the ten‘
sion of spring 126 as the nose passes over the bottom
20 and bead 241 preferably are raised farther, relative to
edge of the slot. As now disposed, generally as indicated.
the panel faces, than the projection of the contact ?ngers.
in
FIGURE 5, bead 24a has partly entered channel 22b
The dual path of contact and frictional engagement
thus provided each pair of wires 12a and 12b by the
assuring precise opposition of apertures 8a and 8b, but
the panels are separated su?iciently far that the contact
terminal contact inserts obviously enhances the connec 75
8,065,441
7
elements are not yet interengaged, see FIGURE 10.
Rotating handle 130‘ and cam block 116 now tends to
individual wires from the stress imposed by the cable
weight. With particular reference to FIGURES 17 to
shift latch 50 rearwardly, to the left in FIGURES 5 and 6,
however the latch is relatively ?xed in position by virtue
19 in conjunction with FIGURES 2 and 4 to 7, heads 150
de?ne a segmented channel 152 adjacent a generally U
of its coupling to keeper plate 34a of panel 6a. The reac
tion of rotating the cam block ?rst forces housing 52 and
Flanges 154 of bottom cover plate 156 are slidable in
panel 6b through pin 114 toward panel 6a, simultaneously
engaging the contact elements, until the cam high point
shaped opening in the bottom wall of housing 52.
channels 152 for locating the cover plate substantially
?ush in the bottom opening of the housing. Rib 157 on
arrives at the center line as described. Thereafter, until
the inner side of plate 156 is disposed so as to be en
stop 132 is reached, continued rotation of handle 1341‘ 10 gaged by rib 54b when panel 6b is clamped in place for
effects the desired partial separation of the panels and
the resultant partial retracing of the paths of contact be
tween the contact elements, FIGURE 9.
In the arrangement illustrated, the point of engagement
securing plate 156 and the strain relief assembly in
position in the housing. Integral with plate 156 is an
apertured Well 158 through which cable 4- is passed into
housing 52, the conical bottom 160 of the well providing
of latch 50 with keeper plate 34a is as close as practical 15 a seat for annular packing 162 of rubber or similar re
to the dynamic center of the spring system represented by
silient material. A gland 164 slidably received in Well
153 is adapted to be driven against packing 162 by bolts
166 extending through the well and threaded into the
units from the desired axial approach toward one another.
gland thereby to squeeze and extrude the packing in
Under certain conditions it will be desirable to have the 20 wardly against cable 4 for strain relief support, the bear
units electrically disconnected but mechanically coupled.
ing surfaces 168 of the gland being conical in mirror
image of well bottom 160.
In this event the units are left, either in the coupling or
decoupling stroke of the operating lever, approximately in
‘FIGURE 19 illustrates in detail packing 162 which is
generally triangular or trapezoidal in cross-section. A
the position as shown in FIGURE 5 Where latch 50‘ re-'
tains the units together, the weight of unit B being borne
series of equally spaced radial slots 1'70 terminating just
short of the cylindrical inside surface render the pack
by guide blocks 66, while the contact elements are disen
gaged, see FIGURE 10.
ing more ?exible in use, and essentially divide the pack
To decouple the contacts and separate the assembly units
ing into spaced, preferably equal sections, more or less
of which may be removed by severing through the thin
it is necessary only to rotate handle 13d counterclock
wise, thereby reversing the coupling action except that, in 30 inside wall according to the size of cable 4.
'For convenience a series of numerals of descending
the ?nal few degrees of throw, the end 136 of lever 122
magnitude may be molded integrally on the outer walls
is arranged to engage and kick latch St} upwardly, FIG
URE 6, to unseat notch 46 from keeper plate 34a where
respectively of the set of the packing sections, the nu
the contact elements as a Whole so that application of the
connecting force produces no tendency to disalign the
upon unit B may be detached. In this connection in order
to assure that the contact elements remain disengaged in
‘those circumstances where the units are desired to remain
mechanically coupled, and further to balance the applied
connecting and retractile forces and assure axial move
ment of the panels, auxiliary stabilization means are pref
erably provided.
merals corresponding to the various cable sizes con
templated to be used whereby the person who assembles
the connector may cut off those packing sections indicat
ing a larger cable size than the one being installed. On
so doing, the inner diameter of the packing is thus con
veniently matched with the cable diameter.
For this purpose in the illustrative 40
embodiment a pair of stand o?‘ plates 138 are slidably
In the event, on matching the inside packing diameter
to a relatively small diameter cable in use, so many of
mounted in either side of housing 52, each plate having
the packing sections are removed that the conical bear
an internal end forming a bearing 14%} slidably guided on
a pin 142 which may be integrally cast with the housing
and extends forwardly therein adjacent the base of stand
ard 72. Bearings 140 are admitted through the side of
standard 72 by openings 144 and are disposed immedi
ing surfaces of gland 164 and well 158 do not adequately
grip therebetween the sloping outside surfaces of the
packing, conical adapter or take-up rings 172 may be
ately forward in parallel overlapping relation to bracket
124 which has a cylindrical surface eccentrically disposed
positioned on either side of the packing as shown in
FIGURE 18.
The ?exibility imparted to the packing by virtue of
of spaced ?ngers 146 disposed in the corners of housing
slots 170 reduces considerably the forces with which
gland 164 must be driven to expand the packing radially
inwardly. vIn addition where the angle of inclination to
the cable axis of conical surfaces 164} and 168 are steep,
a self-constricting characteristics is advantageously im~
parted to the packing. That is, the frictional drag be
52 so as to be in alignment with the end faces of guide
blocks 66 when the units are assembled. By virtue of
tween the cable and the packing, on any axial movement
of the cable, will cause the packing to become more
relative to pin 114 for camming the bearings forwardly '
in the decoupling throw of lever 122 similar to the action
of cam block 110 and latch 50.
Stand oif plates 138 each terminate forwardly in a pair
bearings 140 being driven by cam block 110, the axial
space relation between ?ngers 146 and notch 46 of latch
tighltéyé wedged between the cable and bearing surface 164)
or
.
It will now be apparent that the present invention pro
ranged to be positioned immediately adjacent the end 60 vides a separable electrical coupling device which is
compact, of inexpensive construction while being sim
faces of guide blocks 66, as best shown in FIGURE 6, as
ple and fool-proof in operation, yet capable of accom
latch end 48 comes into engagement with keeper plate
modating a large number of wires to be joined in a man
34a. Thus, regardless of the axial relation of the main
ner‘ whereby the circuit paths are easy and convenient to
body of unit B relative to unit A, ?ngers 146 are forci
establish or revise. Furthermore, the assembly compo
65
bly maintained by cam block 110 at least immediately
nents are highly versatile in use, for example, under cer
adjacent guide blocks 66 so long as latch end 48 engages
50 remains essentially constant.
Fingers 146 are ar
keeper plate 34a, thereby resisting any action tending to
tain conditions only the pair of panels with the associated
contact inserts may be employed, relying on the fric
disalign the axes of the units. Stand off plates 138 are
tional loading of the inserts to hang the panels together.
guided for movement with latch 56 by ribs 148, FIG
It will also be appreciated by those skilled in the art
70
URE 2, providing channels in the housing in which the
that the duplicate nature of many of the assembly com
side edges of the plates adjacent ?ngers 146 are adapted
ponents achieves a noncriticality in the overall tolerances
to ride.
hitherto impossible with previous devices of the type to
Cable 4 is preferably introduced into housing 52 by
which this invention relates. For example, panels 6 may
means which relieves the contact inserts terminating the 75 be the product of a single mold assuring precise align
3,065,441.
1%
ment of apertures 8a and 8b regardless of any irregularity
in the spacing of apertures in any one panel.
I claim:
1. A separable electrical connector comprising a pair
of interengageable units each including a panel carrying
and align said panels in opposed parallel relation with
the sets of contacts in aligned disengaged position on en
gagement of said latch means, said operating means fur
ther including rotary-to-reciprocating motion transmit
ting means having a driving member rotatable in one di
a set of contacts, the contacts of one set being adapted
rection to reciprocate said panels along said guide means
for engagement with the respective contacts of the other
mounted in one unit relative to the panel thereof and en
to cause the contact sets to engage and slide linearly ?rst
in one direction and then in the reverse direction, and
means for stopping rotation of said driving member be
fore the contact sets completely retrace the path of slid
gageable with complementary means in the other unit
for coupling the units together, guide means arranged in
reverse direction to disengage the contact sets.
said units to de?ne a coaxial path of relative movement
6. A separable electrical connector comprising a pair
of interengageable units each including a panel carrying
set on coaxial movement of the panels face-to-face, op
erating means including a latch member reciprocably
of said panels and align said panels in opposed parallel
relation with the sets of contacts in aligned disengaged
position on engagement of said latch means, said operat
ing means further including a driving member operative
ing contact, said driving member being rotatable in a
a set of contacts, the contacts of one set being adapted for
linear sliding. engagement with the respective contacts of
the other set on coaxial movement of the panels face-to
face, operating means including a latch member recip
rocably mounted in one unit relative to the panel thereof
disengaging the contact sets.
20 and engageable with complementary means in the other
unit for coupling the units together, guide means ar
2. A separable connector according to claim 1 wherein
ranged in said units to de?ne a coaxial path of relative
the end portion of said latch member provides a hook pro
movement of said panels and align said panels in opposed
jecting through a central opening in the panel of said
parallel relation with the sets of contacts in aligned dis
one unit for engagement with a keeper plate centrally
mounted in the panel of the other unit.
25 engaged position on engagement of said latch member,
said operating means further including rotary-to-recip1
3. Aseparable electrical connector comprising a pair
rocating motion transmitting means coupled to said latch
of interengageable units each including a panel carrying
member and having a driving member forwardly rotat
a set of contacts, the contacts of one set being adapted for
able to reciprocate said latch member, the axis of rotation
engagement with the respective contacts of the other set
of said driving member being ?xed relative to the panel
on coaxial movement of the panels face-to-face, operat
of said one unit whereby forward rotation of said driving
ing means including a latch member reciprocably mounted
member moves said panels relatively along said guide
in one unit relative to the panel thereof, the end portion
means to cause the contact sets relatively to engage and
of said latch. member projecting through a central open
slide linearly ?rst in one direction and then in the reverse
ing in the panel of said one unit for engaging a keeper
direction, and means for stopping rotation of said driv
plate centrally mounted in the panel of the other unit to
ing member before the contact sets completely retrace the
couple the units together, said operating means further
path of sliding contact, said driving member being re~
including a driving member operative to reciprocate said
versely rotatable to disengage the contact sets.
latch member for relatively reciprocating said panels co
7. A separable connector according to claim 6 wherein
axially for engaging and disengaging the contact sets, said
said driving member comprises an eccentrically mounted
latch member engaging said keeper plate to couple the
cylinder rotatable in a circular opening in said latch mem
units mechanically before the contact sets. engage elec
ber, and a rotatable lever keyed to said cylinder.
trically in the coaxial engaging movement of the con
to reciprocate said latch member for relatively reciprocat
ing said panels along said guide means for engaging and
‘8. A reversible contact assembly for a separable con
nector comprising a pair of engageable units each includ
tive with the other unit on mechanical coupling of the
latch member and keeper plate to retain the units in 45 ing a like panel of insulating material having therein a
plurality of apertures, a like set of hermaphroditic con
mechanically engaged, electrically disengaged position.
tacts received in said apertures, co-operating means for
4. A separable electrical connector comprising a pair
releasably securing the contacts in the apertures on in
of interengageable units each including a panel carrying
sertion thereof from either face of said panel, and nest
a. set of contacts, the contacts of one set being adapted
nector units, and supporting means on one unit coopera
for linear sliding engagement with the respective contacts
ing means de?ned by aligned complementary elements on.
of the other set on coaxial movement of the panels face
to-face, operating means including latch means in one
unit engageable with complementary means in the other
the contacts in one unit to reverse opposed relation with
the contacts of the other unit.
unit for coupling the units together, guide means arranged
in said units to ‘de?ne a coaxial path of relative move
.ent of‘ said panels and align said panels in opposed par
opposite faces of said panel for polarizing and guiding
9. A reversible contact assembly for a separable multi
55 contact connector comprising a pair of interengageable
units; one of said units including a set of contact ele
operating means further including rotary-to-reciprocating
ments, each having contact means and resiliently sup
ported detent means, and a panel having aperture means
motion transmitting means having a driving member ro
for cooperating with said detent means to secure the
allel relation on engagement of said latch means, said
tatable in one direction to reciprocate said panels along 60 contact elements on insertion from either face of the
panel andto support said contact means in a coaxial
array; the other unit including an identical panel and
contact set inserted therein in reverse and opposed rela
direction, and means for stopping rotation of said driv
tion to said ?rst unit whereby the contact means of one
ing member before the contact sets completely retrace the
path of sliding contact, said driving member being ro 65 unit engage the contact means of the other on axially
moving the panels thereof face-to-face; the panels each
tatable in a reverse direction to disengage the contact sets.
said guide means to cause the contact sets relatively to
slide linearly ?rst in. one direction and then in the reverse
5. A separable electrical connector comprising a pair
of interengageable units each including a panel carrying
including nesting means having axially aligned comple
mentary elements on the opposite faces thereof for align
ing the respective aperture means in opposition on bring
engagement withv the respective contacts of the other set 70 ing the panels face-to-face; and means for reversibly
mounting each panel in its incorporating unit.
on coaxial movement of the panels face-to-face, operat
10. A reversible contact assembly for a separate
ing means including latch means in one unit engageable
multi-contact connector comprising a pair of interengage
with complementary means in the other unit for coupling
able units; one of said units including a panel having a
the units together, guide means arranged in said units to
de?ne a coaxial path of relative movement of said panels 75 plurality of apertures and a set of contact elements in
a set of contacts, the contacts of one set being adapted for
3,065,44i
ll
l
,
serted therein, a pair of shoulder means positioned sym
metrically in each aperture relative to the opposite faces
of the panel, each contact element having a shoulder for
engaging the shoulder means facing the insertion end of
the aperture and a pair of longitudinally extending later
ally oifset spring arms, one of said spring arms de?ning
a contact plate having a lateral end portion adapted to
latch over the aperture edge to maintain said shoulder
in position, the other of said spring arms terminating in
a contact ?nger projecting outwardly of the panel face;
having complementary sets of contacts interengageable
upon coupling the units, each contact set being carried by
an insulating panel, a plate having a slot, a central open—
ing, in the panel of one of said units and means adjacent
said opening for mounting said plate on the face of said
panel, the relative axial orientation of said plate and said
panel being variable, and means including a ?at member
complementary with said slot supported in said other unit,
said ?at member centrally projecting from the face of the
panel of said unit for insertion in said slot on coupling the
units, the relative axial orientation of said ?at member
and the associated panel being variable.
15. A separable connector comprising a pair of units
the other unit including a similar panel and contact set
inserted therein in reverse and opposed relation to said
?rst unit whereby the contact ?ngers of one unit slidably
frictionally engage the contact plates of the other on axi
having complementary sets of contacts interengageable
ally moving the panels thereof face-to-face; the panels
each including nesting means having complementary ele
15 upon coupling the units, each contact set being carried
by an insulating panel, a plate having a slot, a central
opening in the panel of one of said units and means adja
cent said opening for mounting said plate on the face
ments on the opposite faces thereof for aligning the re
spective apertures in opposition on bringing the panels
face-to-face; and means in said units for reversibly
of said panel, the relative axial orientation of said plate
mounting the panels therein.
20 and said panel being variable, and means including a flat
11. A reversible contact assembly for a separable
multi-contact connector comprising a pair of interengage
member complementary with said slot supported in said
other unit, said ?at member centrally projecting from
able units; one of said units including a panel having a
the face of the panel of said unit for insertion in said slot
plurality of apertures and a set of contact elements in
on coupling the units, the relative axial orientation of said
serted therein, a pair of’shoulder means positioned sym~ 25 ?at member and the associated panel being variable, and
metrically in each aperture relative to the opposite faces
polarizing means having complementary elements in the
of the panel, each contact element having a shoulder for
respective units for stopping coupling movement of said
engaging one of said shoulder means and a pair of l0ngi~
units short of engagement of said contact sets for relative
axial orientations of the panels other than a predetermined
‘orientation.
16. A sheet metal hermaphrodite contact element adapt
ed to be inserted in an apertured panel of an electrical
connector, said contact element comprising a supporting
section adapted to be received in an aperture in a snug ?t,
a contact plate extending forwardly of said supporting sec
tudinally extending laterally offset spring arms, one of
said spring arms de?ning a contact plate having a lat
eral end portion adapted to latch over the aperture edge
to maintain said shoulder in position, the other of said
spring arms terminating in a contact ?nger projecting
outwardly of the panel face; the other unit including a
similar panel and contact set inserted therein in reverse
and opposed relation to said ?rst unit whereby the con~
tion, the end portion of said contact plate being turned
tact ?ngers of one unit slidably frictionally engage the
downwardly to provide a detent arranged to snap over
contact plates of the other on axially moving the panels
the forward edge of said aperture on insertion of the con
thereof face-to-face; and aligning means for guiding the
tact element,'a spring arm extending forwardly of said
axial movement of said panels including an axially 40 supporting section and terminating in a contact ?nger
aligned recess and projection means on the faces of the
biased thereby toward the plane of said contact plate, said
panels.
contact ?nger ‘being in opposed offset relation from said
12. A reversible contact assembly for a separable
contact plate relative to the axis of the contact element
multi-contact connector comprising a pair of interengage
and extending longitudinally beyond said contact plate for
able units; one of said units including a set of contact ele 45 sliding frictional engagement with the contact plate of a
ments each having a contact means and resiliently sup
similar contact element supported in reverse and opposed
ported detent means, and a panel having aperture means
relation.
‘for cooperating with said detent means to secure the con
17. A sheet metal contact element adapted to be in
tact elements in a snap ?t on insertion from either face
serted in an apertured panel of an electrical connector,
each aperture having an inclined wall leading to a reduced
section, said contact element comprising a supporting sec
tion adapted to be received in an aperture in a snug ?t, a
spring arm inclined to the axis of the contact element and
terminating in a contact ?nger engageable with a c0~
55 operating contact element of the connector, and a pres
of the panel and to support said contact means in a pre- ,
determined coaxial array; the other unit including an
identical panel and contact set inserted therein in reverse
and opposed relation to said ?rst unit whereby the con
tact means of one unit engage the contact means of the
other on axially moving the panels thereof face-to-face;
means for reversibly mounting the panels in said units;
and a polarized coupling‘mechanisrn for axially moving
said units together, the axial orientation of the panels
in said units being variable relative to said coupling mech
anism.
'
.
13. A separable connector comprising a pair of units
sure plate connecting said spring arm and supporting sec
tion and resiliently supported by said supporting section,
said pressure plate being arranged to be cammed by the
inclined aperture Wall into the reduced aperture section
on insertion of the contact element to provide support and ~
lateral bias for said spring arm. ‘
having complementary sets ofcontacts interengageable
, ‘18. A sheet ‘metal hermaphrodite contact ‘ element,
upon coupling the units, each ‘contact set being carried
adapted to‘be inserted in an apertured panel of an elece
trical connector, each aperture having an inclined wall
leading to a reduced, section, said contact element com
prising a supporting section adapted to be received in an
aperture in a snug ?t, a contact plate extending forwardly
of said supporting section, a pressure plate resiliently sup
ported by said supporting section and arranged to be
cammed by the inclined aperture wall into the reduced
aperture section on insertion of the contact element,
a spring arm extending from said pressure plate and
terminating in a contact ?nger ‘biased thereby toward
by an insulating panel, ‘a polarized coupling mechanism
for said units including an operating arm in one of said
units engageable upon alignment in a given axial orienta
tion with a complementary element in the other unit, the
axial orientation of said operating arm and complemen
tary element being variable relative to the respective
panels of said units, and polarizing means operative upon
actuation of said operating arm to stop movement of said
units short of engagement of said contact sets on mis
orientation of said panels from a predetermined relative
axial orientation.
the plane of said contact plate, said contact ?nger
14. A separable connector comprising a pair of units 75 being in opposed o?set relation from said contact
3,065,441
14
13
one face of the panel extending around said body por
tion and a peripheral bead on the other face of the panel
in axial alignment and congruous with said recess, _a
plate relative to the axis of the contact element for
sliding frictional engagement with the contact plate of a
similar contact element supported in reverse opposed rela
tion.
19. A sheet metal hermaphrodite contact element adapt
ed to be inserted in an apertured panel of an electrical
?ange coextensive with and projecting outwardly of said
connector, each aperture having an inclined wall leading to
one face from the outer edge of said recess, and polarizing
means for interfering with nesting of said panel with a
similar panel for axial orientations thereof other than a
a reduced section, said contact element comprising a base
portion, wire attaching means at the rear end of said base
one bead on the inside sidewall of said ?ange and an
given orientation, said polarizing means including at least
portion, means resiliently supporting a pressure plate gen 10 aligned complementary groove in the outside sidewall of
said peripheral bead.
erally parallel to but spaced from the plane of said base
24. For use in a unit in a contact assembly of a con
portion a distance greater than the corresponding dimen
nector, a panel of insulation material including a main
sion of said reduced section, a spring arm extending from
body portion having therein a plurality of apertures for
the forward edge of said pressure plate and projecting
downwardly toward the plane of and laterally offset from 15 receiving and supporting a set of contact elements, guide
means for aligning said apertures with corresponding ap
the longitudinal axis of said base portion, said spring arm
ertures of a similar panel including a recess in one face
terminating in a contact ?nger biased thereby below said
of the panel and means projecting from the other face
plane, a contact plate extending forwardly of said base por
of the panel in axial alignment and congruous with said
tion in opposed offset relation from said spring arm
relative to said axis, and ‘detent means for securing the 20 recess for nesting in the recess of a like panel, polarizing
means having complementary portions on the recess and
contact element in the aperture and arranged to engage
projecting means for stopping nesting of the projecting
complementary means of the panel as said pressure plate
at
means for axial orientations other than a given orienta—
tion of said panel relative to a like panel, and means for
enters the reduced section.
20. A sheet metal hermaphrodite contact element adapt
ed to be inserted in an apertured panel of an electrical 25 reversibly mounting each panel in its incorporating unit
so that either face may cooperate with a similar panel in
connector, said contact element comprising a base portion,
a mating unit of the connector assembly.
wire attaching means at the rear end of said base portion,
25. For use in a unit in a contact assembly of a con
a spring arm extending forwardly of said base portion and
terminating in a contact ?nger biased downwardly by said
spring arm, shoulder means for engaging complementary
nector, a panel of insulation material having a main body
portion, a central opening in said body portion, integral
lug members projecting laterally into said opening and
means in the aperture to stop forward movement of said
contact element therein, a contact plate extending for~
inset from both faces of the panel for supporting a keep
er plate flush with either panel face, a plurality of aper
wardly of said base portion in opposed offset relation from
tures extending through said body portion for receiving
end portion of said contact plate being turned downward; 35 a set of contacts, stop shoulders means symmetrically ar
ranged in said apertures to engage complementary parts
ly to provide a detent for stopping reverse movement of
said spring arm relative to the axis of contact element, the
of a contact on insertion from either face of the panel,
and means symmetrical relative to the panel faces for re
the contact element in the aperture and arranged to snap
over the forward edge of said aperture as said shoulder
means engage the complementary means.
21. For use in a unit in a contact assembly of a con
versibly mounting the panel in said unit.
40
nector, a panel of insulating material including a general
ly rectangular main body portion having therein a plu
rality of apertures for receiving a set of contacts, nesting
means for guiding the relative movement of said panel
toward a similar panel to align the respective apertures
26. A contact assembly for a separable multicontact
connector comprising a pair of engageable units, each
unit including a body member having a plurality of con
tact-receiving apertures and a set of contacts inserted
therein, each contact having a detent shoulder for abut
ment with a cooperative shoulder of the aperture and a
thereof including a recess in one face of said panel ex
pair of longitudinally extending laterally offset spring
tending around said main body portion and a bead on the
other face of said panel in axial alignment and congruous
with said recess, and means symmetrical with the panel
faces for reversibly mounting each panel in its incorporat 50
having a lateral end portion latched over the aperture
edge to maintain said detent shoulder in position, the
other of said spring arms terminating in a contact ?nger
ing unit so that either face may cooperate with a similar
panel in a mating unit of the connector assembly.
arms, one of said spring arms de?ning a contact plate
projecting outwardly from the body member face, the
contact set of one unit being positioned in reverse and
opposed relation to the contact set of the other unit so
that the contact ?ngers of one set slidably engage the con
trical connector, a panel of insulating material having a
generally rectangular main body portion a plurality of 55 tact plates of the other set on moving the body members
22. For use in a unit in a contact assembly of an elec
apertures extending through said body portion for receiv
axially face-to-face.
ing a set of contacts having contact ?ngers adapted to pro
ject outwardly of a face of the panel, nesting means for
guiding the relative movement of said panel toward a
nector, a panel of insulating material including a gener
similar panel to align the respective apertures thereof in
rality of apertures for receiving a set of contacts, stop
cluding a recess in one face of said panel extending
around said body portion and a peripheral head on the
shoulder means including portions laterally extending in
27. For use in a unit in a contact assembly of a con
ally rectangular main body portion having therein a plu
wardly in said apertures and disposed to engage and re
other face of said panel in axial alignment and congruous
tain contacts inserted into either end of the apertures re
spectively, nesting means for guiding the relative move
with said recess, a ?ange coextensive with and projecting
outwardly of said one face from the outer edge of said 65 ment of said panel toward a similar panel to align the
recess, said ?ange and bead projecting farther than the
respective apertures thereof, including recess means in
contact ?ngers relative to the faces of the panel, and means
one face of the panel and complementary projection
for reversibly mounting the panel in said unit.
means on the other face of the panel in axial alignment
23. or use in a unit in a contact assembly of an electri
with the recess means, and means symmetrical with the
cal connector, a panel of insulating material including a 70 panel faces for reversibly mounting each panel in its in
generally rectangular main body portion, a plurality of
corporating unit so that either face may cooperate With
apertures extending through said body portion for receiv
a similar panel in a mating unit of the connector as
ing a set of contacts, nesting means for guiding the rela
tive movement of said panel toward a similar panel to
align the respective apertures thereof including a recess in 75
sembly.
(References on following page)
15
3,065,441
References Cited in the ?le of this patent
UNITED STATES 5 PATENTS
2,197,780
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2,486,195
2,594,748
2,689,337
Anthony ____________ __ Apr. 23, 1940
Walker ______________ __ Oct. 7, 1941
Grohsgal ____________ __ Oct. 21, 1941
Penfold _____________ __ May 11, 1943
Andersen ____________ .__ Oct. 9, 1945v
Piatt et a1. ___________ __ Sept. 3,
Munsey ______________ __ Oct. 25,
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16 ,
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,
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_____' _________ __
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FOREIGN PATENTS
658,628
808,723
1,011,030
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Germany ___________ __ July 19, 1951
Germany ____________ __ June 27, 1957
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