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Патент USA US2115010

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Ap ` 26, 1938.
v2,115,010
H. A. DOUGLAS
CONNEGTING MEAN S
Original Filed Jan. 18, 1933
5 Sheets-Sheet 1
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April 26, 1938.
1
H. A. DOUGLAS
CONNECTING
MEANS
Original Filed Jan. 18, 1933
2,115,010
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5 Sheets-Sheet 2
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April 26, 1938.
H. A. DOUGLAS
v2,115,010
CONNECTING MEANS
Original Filed Jan. 18, 1935
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5 Sheets-Sheet 5
Patented Apr. 26, 1938 -
_ 2,115,010
PATENT OFFICE?
UNITED y STATES
2,115,613
v
Harry A. Douglas,
CONNECTING
Bronson, Mich., assigner to
Kingston Products Corporation. a corporation
ot Indiana
Application January 18, 1933, Serial No. 652,290
‘
Renewed July 22, 1935
6 Claims.
«
(Cl. 173-269)
This invention relates to connecting means,
more particularly for electrical conductors, and
Figure 14 is a section taken on the line Il-H n
of Figure 12;.
Figure 15 is an axial section similar to Figures 1
the principal object of my invention is to provide «
new and improved connecting means of this type. and 12 showing a further modiñed form;
Figure 16 is a perspective view of the modiñca
Another object of the invention is to provide
tion of Figure 15; and
.
an improved and economical form of snap ter
Figure 17 is -a section taken on the line I‘l--Il
minal connecting means which may be applied
of` Figure 15.
`
to the ordinary screw-threaded stud of an inter
In -the illustrative construction, I have shown
nal combustion engine spark-plug, for example,
10 by a simple rectilinear movement either axially a conventional spark-plug such as is commonly
of the connecting means or transversely thereof. used in internal combustion engines and having
the usual central electrode terminating at the
Other objects will appear hereinafter as the de
top of the plug in a threaded s_tud 2 to which, in
scription of the invention proceeds.
'_
'I'he present invention is in some respects an accordance with customary practice, is connected
the high tension lead of the electric ignition sys
15 improvement upon the invention of my co-pend
ing application, Serial No. 637,719, iìled October tem, by means of a nut (notshown) screwed
12, 1932, and subject-matter not claimed herein upon the stud 2. In certain motor block con
is claimed in that application.
The invention will be understood by reference
to the illustrative constructions shown in the
structions, for example, _where the spark-plug is
received in rather a deep pocket in the motor
block, it is frequently difficult to attach the lead
to the stud 2 by ordinary connecting means in
accompanying drawings, in which- ‘
Figure 1 ks an axial section of connecting means , which the lead approaches the stud in a trans
verse direction. In accordance with my inven
embodying my invention, parts associated there
tion, I have provided improved connecting means
with being shown in elevation;
Figure 2 is an elevational view of the connector by which without the addition of any parts to
the spark-plug, the lead may -be connected there
shown in Figure 1;
Figure 3 is an elevational view on `a smaller to by the simple rectilinear movement of a snap
scale showing the connecting means of Figure 1 terminal either axially, as shown in Figure 1, or
transversely as shown in Figure 3.
in use in transverse position;
For this purpose I have shown a hollow metal
30
Figure 4 is a section taken on the line 4-4 of
lic jack 3 to which the lead wire l is axially con
Figure 3;
’
Figure 5 is an elevational view of connecting nected. In this instance, the .end of the wire I is
means embodying the invention in axial position, bared of its insulation 5 and is passed through
parts being broken away to show a modified iorm an exteriorly threaded sleeve 6 and folded back.
as at 'I upon the exterior of this sleeve. The 35
35 of spring detent;
‘
sleeve
1 is „then threadedly received in the inte- 1
Figure 6 is an end view, in separated relation,
riorly threadedsocket 8A in the base of the jack 3,
of the spring detent shown in Figure 5; `
the wire thus being securely clamped between the
Figure 7 is an end View of a further modiiied l
threads of the parts 6 and 9 affording a good me
form of detent partly in section;
chanical and electrical` connection between the
4
Figure 8 is a view similar to Figure 5, but show
wire and the jack. To provide room for the bent
ing a further modiiied form of spring detent;
over portion 1 of the wire, the sleeve 6 in the
Figure 9 is an end view of the spring arm of region of this portion of the wire, may be longi-v
Figure 8 in separated relation; `
tudinally grooved as at 9, in accordance with my
Figure 10 is a view similar to Figure 9 showing Patent No. 1,339,694, issued May 11, 1920. The 45
45
a further modifled form of detent;
sleeve 6 is desirably enlarged as at I0 to receive
Figure 11 is a view similar to Figure 10 showing
a still further modified form, together with a
modiiled form of connection for the current con
50 ducting wire associated with my improved con
necting means;
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Figure 12 is a view similar to Figures 1, 5, 8
and 10, showing a further modification;
Figure 13 is a view, on a smaller scale, showing
55 the structure of Figure 12 in alternative position;
a portion of the insulation 5 and the jack 3 when -
screwed upon the sleeve portion 6 desirably _abuts
the enlargement I0.
‘
In accordance with my present invention the
jack 3 has a plurality of transversely related bores
therein, one of said bores, such as the bore Il,
being `coaxial with the jack and the other,- the
bore/'|2, being transverse thereto.4 In this in
stance these bores desirably intersect perpendicu
55
2,115,010
larly and are served by a single spring pressed
detent I3.l As shown in Figures l to 4, inclusive,
extends along `the exterior of the Jack, vnormally
35 may be formed by upsetting as at ll the in
ner margins of the detent aperture II.
.As shown in Figure 1l security of engagement
of the ball detent 4II with thespring arm 4I may
be enhanced by providing a complementary seat
42r in the arm 4I for the Vreception o! the bali
40'. As here shown, this seat may be formed by
spaced therefrom, and having its free end turned
forming a hole in the arm 4I of less diameter i '
at right angles thereto to project through the
than the ball 40 and by slightly tapering the mar
sins of this hole. Should it be desired under cer ll0
tain circumstances tocause the jack 43 and stud
the detent I3 may be formed upon the free end
of a leaf spring I4 riveted at its base I5 to the
base o! the jack as by the rivet flange Il, the
.leaf spring thus providing a spring arm which
io detent aperture I1 in the jack in the form of the
integral detent I2. The aperture I1 intersects
both the `bores II and I2. 'I'he spring arm I4'
may be bowed,_as,at I4a, to enhance its spring
effect.
15
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Theiack I is thus adapted to receive the mem
ber to be connected thereto, representedin Fig
ures 1 to 1l, inclusive, by the stud 2 of the spark
plug I, within either the axial bore Il of the Jack
Vor thel transverse bore I2, so that the lead I4
may be connected thereto either axially, as shown
in Figure 1, or transversely as shown in Figures
3 and 4. At the same time, the detent Il is in
position to yieldingly engage the 'stud regardless
of which of the bores receives the stud. It will
be noted that the bore I2 extends all the way
through the jack, 'so that the stud may be in
serted therein from either end as described.
To make possible a connection of the jack dl
rectly to the stud 2 and to enhance the security
of this connection, I roughen the walls of the
bores II and I2 which may be economically and
z to be connected axially but to have the'lead `
44 connected transversely to the jack, the lead
may be appropriately secured to a metallic lug
45 which may bevsecured to the base of the jack
43 by a screw 45 received in the threaded socket
41 in the jack.
‘
As shown in Figure 12, the jack 48 mayhave '
its intersecting transversely related bores 49 and
50 unroughened and the stud 2 of the spark-1
plug I may have screwed thereon a conventional
metallic terminal 5I provided with an annular
groove` 52 into which the ball detent y5l snaps.>
In this instance,n the ball detent 5I has an annu
lar seat 54 which permits a portion- of the ball
to be projected through the aperture-55 into the
bores 45 and 50, and the ball is urged toward'its
seat by a coil spring 56 carried by the Jack
through the intermediation of a short spring bar-,-`
rel 51 which has its open end riveted about the
seat 54 as at 58.l '
advantageously accomplished by screw-threading
Figure 13 shows the terminal 5I connected
them as indicated by the >screw threads Il ofthe
bore I I and I5 ofthe bore I2. The screw threads
35. >Il and I9 are desirably of the same Ypitch as the
conventional pitch for the screw threads of the
stud 2, but are of less height, so that the threads
of the stud 2 may slide over the threads I8 or
Il as the case may be, .but be pressed into inti
transversely with the jack as by being» received
in the bore 50.
..
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In Figures 12, 13 and 14, the lead wire 55 may
be connected to the jack as by being received in
a threaded socket SII in the jack 4I, similarly
to the construction shown in Figure Y1.
~
In Figures 15 and 16, I have shown a jack l5I
40 'mateintercalationrtherewith by the spring de
which may have the perpendicularly intersecting
tent I3. This latter arrangement is more fully . bores 62 and 63 therein which bores have the
described and claimed in my co-pending appli
internal transverse screw threads 54 and 55 cut
cation, Serial No. 637,719, ñled October 12, '1932.'
'I'he detent Il desirably has an arcuate tip 2l to
slide resiliently over the threads of the stud 2
and while this tip is shown ñat in this instance,
I advantageously dispose it diagonally to both
of the bores II and‘ I2 as best shown in Figures
2 and 3, so that its edges will not undesirably
catch in the threads of the studA 2. As shown
Y in Figure 5, however, this same result may be ac
complished by providing a detent 2I‘having a
dome-shaped tip 22 and secured `to the> spring
therein. The jack 5I`is adapted to receive the`
threaded stud 2 therein, the bores 52 and 4I be-y
ing of the same diameter and of a diameter rela
Vtively larger than the over-all diameter of the
stud, so that the stud is spaced from one‘side
of the rbore and so that the jack may be placed
over the stud by a rectilinear movement. A >tight
engagement between the stud and the jack ~is
secured by means of the steel ball detent 55,
which is pressed into the bores by the coil spring
61 housed by the spring barrel i8 carried bythe
jack. 'I'he ball 66 is »partially pressed through
arm 22 as by being riveted thereto at 24, or, as
shown in Figure 'I a spring arm 25 may be circu , the detent aperture 69, the axis 1li of which is `
larlyk depressed as at V26 to provide an integralV » perpendicular to the axis 1I of the bore 62 and is
`detent21 also having a dome-shaped tip 28.
also perpendicular to the' axis of the bore 53
As shown in Figure 8, I may. combine a ball which intersects the axis ofthe bore 1I at the
bearing eil’ect with the detent by providing a de
point 12, through whichl point ¿the line 'I0 also
60 tent in the .form of a separable steelfbïall 29, the
passes. Regardless therefore of which bore the
detent aperture in the jack 30 in such instance stud is received in, the detent presses the -stud
being provided with a tapered annular seat 3i vagainst the inner face 13a7of the wall 13 which
f upon which the ball is pressed by the spring arm is unapertured and which-is common tosboth the
l2.- 'I‘he seat 2l permits a portion of the'bail to bores 62 and63 and thethreads of tl e stud are
be projected therepast into the bores of the jack thus> caused to securely but yieldingly interen
to yieldingly engage the stud 2. The spring arm gage with eitherzthe threads 64_or the threads
32 may be oppositely bowed as at 33 and 34 to
65, as the case may be.
'I'he ball 56 and coil
'spring 61 are desirably self-centering with re
As shown in Figure l0, the ball detent 35 -may spect to the aperture 69 and the axis "which
be slightly smaller than the ball 29 and to com
is not always possible with'the detents pressed 70
pensate therefor may be projected farther into by a leaf spring.k
l
the jack 36 by the spring arm 31 which, in this
As best shown in Figure 17, the threads B4 and
instance, may be unbowed, but may be angularly
65 are right-hand threads to mate with the
directed upon the ballv 35 to enhance its spring customary right-hand threads of the stud 2 and
enhance its spring eñect.
arm eil'ect.
Y
`v
In this case the seat for> the ball
the threads |54V and v65 being transversely related u
2,115,010
3
4. Connecting means comprising a hollow me
but not overlapping, as here shown, tend to con
verge at a point 14 which is substantially the tallic jack having intersecting transversely're
center of the inner surface 13a of the wall 13 and lated bores therein, one of said bores being coaxial
is also substantially directly in line with the line with the jack and the walls. of said bores being
l0 in the 'direction of which the _detent 66 is screw-threaded; an aperture in said jack commu Gl
pressed. Thus whether the stud is received in the nicating with each of said bores; a seat in said
bore 62 or the bore 63, it is pressed squarely ' aperture; a ball on said seat, said seat permitting
against the wall 13a, so that its threads are a portion of said ball to be projected therepast
pressed squarely into‘ intercalation with the linto said bores; and a spring arm carried by said
10 threads 6I or 65, as the case may be, and in either jack and extending axially of said Jack upon the 10
event, it will ñnd suilicient threads upon this wall exterior thereof, said arm pressing said ball upon
extending in the proper direction to eñect the said seat, said arm having aA seat therein for the
secure but yielding engagement between the stud ' ball.
5. Connecting means comprising a hollow me
and jack heretofore described.
tallic jack having intersecting transversely re
Having described my invention, I claim:
15
lated bores therein, one of said bores being coaxial
1. Connecting means including a hollow me
tallic jack having intersecting transversely related -with the jack and the walls of said bores being
bores therein, an aperture communicating with screw-threaded; an aperture in said jack com
each of said bores, a seat in said aperture, a ball municating with each of said bores; a seat in
on said seat, said seat permitting a portion of said aperture; a ball on'said seat, said'seat per
said ball to be projected'therepast into said bores, mitting a portion of said ball to be projected
and a spring arm carried by said jack extending therepast into said bores; and a spring _arm car-l
axially of the jack upon the exterior thereof and ried by said jack and extending axially of said
jack upon the exterior thereof, said arm press
pressing said ball upon its seat.
ing said ball upon said seat, said arm having a
2. Connecting means including a hollow me
tallic jack having intersecting transversely related seat therein for the ball, said seat in the arm being
bores therein; an'aperture communicating with formed by the margin of a hole in said arm.
6. A receptacle, for receiving and releasably
each of said bores; a seat in said aperture; a
ball on said seat; said seat permitting a portion holding a plug conductor terminal having a lat
of said ball to be projected therepast into said » eral surface depression, comprising: socket means, 30
bores; and a- spring arm carried exteriorly by said having av body ~provided with intersecting recesses
for receiving'the terminal in either of said're
jack extending axially of the jack upon the ex
terior thereof and pressing said ball upon its seat, cesses; each of said recesses having a wall portion
said arm having a seat therein for the ball, -said constructed and arranged to engage in said lat
seat being formed by the margins of a hole in ' eral surface depression of the terminal; said body
said arm.
.
3. Connecting means comprising a hollow me
tallic jack having intersecting transversely related
bores therein, one of said bores being coaxial with
the jack and the walls of said bores being _screw
threaded; an aperture in said. jack communicat
ing with each of said bores; a seat in said aper
ture; a ball on said seat, said seat permitting a
portion of said ball to be projected therepast into
Q said bores; and a spring arm carried by said jack
and extending _axially of said jack upon the ex
terior thereof, said arm pressing said ball upon
having an aperture communicating with said re
cesses; a ball in said aperture; said aperture being
so constructed and arranged that it provides a
seat for said ball and so that said seat permits
a portion of said ball to be projected therepast 40
into said recesses; and a. spring arm, extending
along said body on'the exterior thereof, con
structed and arranged to press said ball upon said
seat. »
HARRY A. DOUGLAS.
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