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Патент USA US2404909

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July 3o, 1946.
2,404,909
L. M. JOHNSTON
SINGLE POINT RELEASE FOR PARAGHUTE HARNESS
Filed Dee. 15, 1944
. .Mir«l
,
2,404,909
Patented July 30, 1946
UNITED STATES PATENT OFFICE
2,404,909
SINGLE POINT RELEASE FÜR PARACHUTE
HARNESS
Lawrence M. Johnston, Indianapolis, Ind.,
assignor to himself, as trustee
Application December 15, 1944, Serial No. 568,256
12 claims. (Cl. 24-205)
l
2
The present invention relates to connectors for
parachute harness, and its primary object is to
manently connected a lanyard attached to the
harness, so that' the connector will not be lost
provide a simple, inexpensive, fool proof means
for holding the ends of the various straps of a
parachutist’s harness, _which means will never
theless be readily and quickly actuable to release
The base member I0 is centrally perforated as
at I5 to provide a journal mounting for a rotary
all of said straps, whereby the parachutist may
instantly divest himself of the harness. Further
objects of the invention will appear as the de
scription proceeds.
»
when the harness buckles I4 are disconnected
therefrom.>
stem I6 which carries cam means, indicated gen
erally by the reference numeral I‘I. Said cam
means is formed to provide a plurality of cam
10 risers, one for each hook assembly, and indicated
generally by the .reference numerals I8, I8', I8”,
To the accomplishment of the above and re
lated objects, my invention may be embodied in
the form illustrated in the accompanying draw
and I8,"’, disposed generally in a plane normal
to the axis of the stem I6, and radiating from
said axis. The riser I8 is‘formed at one end with
i-ng, attention being called to the fact, however,
a high portion I8a, and inclined downwardly to
15
that the drawing is illustrative only, and that
ward the base element I0 to a. low portion at its
change may be made in the speciñc construction
opposite end I8b. Adjacent the end I8b of the
illustrated and described, so long as the scope of
riser I8, the same is notched or mutilated, as at
the appended claims is not violated.
I9, for a purpose later to be described. Similarly,
Fig. 1 is a pla'n of my connector, parts being
the riser I8' declines from its high point I8'a to
broken away for clarity of illustration;
its low point I8'b which is immediately adjacent a
Fig. 21s a similar view, the operating disc hav
notch IS’; the riser I8" declines from its high
ing been removed;
point I8"a to its low point IB”b which is im
f Fig. 3 is a vertical section through the con
mediately adjacent a notch I9”; and the riser
nector, taken substantially on the line 3-3 oi
I8”’ declines from its high point I8"'a to its
25
Fig, 4, and looking in the direction of the ar
low point I8"'b which is immediately adjacent
rows;
'
a notch I9"'.
‘
È
Fig. 4 is a transverse section through the con
The
upstanding
perimetral
wall IU’ of the base
nector, taken substantially on the line 4-4 of
element
I0
is
provided
with
a
plurality of perim
Fig 3, and looking in the direction of the arrows;
Fig. 5 is a fragmental section taken substan 30 etrally spaced bores 20 which are internally
threaded at their lower ends for the reception
tially on the line 5--5 of Fig. 1 and looking inthe
of screws 2| whereby the pad I I is secured to the
rection of the arrows;
base element, and for the reception of oppositely
Fig. 6 is a fragmental section taken in the piane
entered screws 22 which penetrate bores formed
of Fig. 3 and showing the latch pawl in release
,- in a corresponding perimetral wall of a housing
position; and
element 23, said latter perimetral wall register
ing with said upstanding wall I0’ and preferably,
though not necessarily, being rabbeted at 24
to cooperate with the cooperatingly formed upper
Fig. 'I is a similar section showing the parts
in an intermediate position during engagement
of a buckle with a hook and pawl.
Referring more particularly to the drawing,
edge of said wall I0'.
The uppermost surface of the housing element
it will be seen that I have illustrated a connector
unit which comprises a base element IIJ to the
under surface of which is secured a pad I I which
may preferably be made of leather. The base
member Il) is formed to provide a plurality of
perimetrally spaced, upstanding hooks I2, I2', I2”,
and I2"'.
23 is dished, as at 25, for a reason which will ap
pear, and is centrally formed with a downwardly
45
_
While four such hooks are illustrated in the
present drawing, together with four of each of
the parts cooperating with said hooks, it will of
projecting hub 26 providing a journal support 21
for the stem I6. At peripherally spaced points,
said hub 26 is formed'with four downwardly-open
ing slots 28, etc., and said slots, and their bound
‘ ing walls, are traversed by bores 29 in which may
course be understood that any suitable number
be mounted pivot pins 3l, all as is clearly illus
trated in Figs. 3, 4, and 5. The uppermost wall of
of hook assemblies may be provided, depending
upon the particular harness selected for use. Ob
viously, one hook will be provided for each har
ness buckle. The base member I0 may further
be provided with an eye I3 to which may be per 65
Pivotally mounted upon each pivot pin is a pawl
latch, said latches being indicated by the refer
ence numerals 32, 32', 32", and 32"’. Since these
each of said slots is further provided with a tapped
bore 30 for a purpose later to become apparent.
2,404,909
4
<3
four latch assemblies are identical, only one has
illustrated in Fig. 3. Such an operation, how
ever, would be extremely diiìicult for an unas
sisted operator. It will be noted that the chan
nel 41 is shown, in Fig. l, to have a clockwise
extension 52 beyond the position occupied by the
plunger 45 in Fig. l. That extension 52 is some
been illustrated in detail, and only one will be de
scribed.
The latch pawl
is provided at its outer` end
with a radially opening socket 33, the outermost
boundary of which is defined by an outwardly
, and upwardly inclined surface 34.
what shallower than the main body of the chan
nel 41. Therefore, when the disc-‘40 lis'îreturned
The cani sur
face 3dr-is so proportioned and designed that'its
outermost point is spaced beyond 'the ’uppermost
surface 31 of the hook I2 yby a distance greater
-from its release positionfit will'be brought to a
stop at the point at which the bore 49 and the
than the radius of the end portion of the bar
socket 58 register. If, now, the end of the pin
forming the buckle I4, for a‘reason which will
`5I is pushed through the hole 48 in the disc 40 to
appear hereinafter.
`depress the plunger 45 somewhat against the tend
Facing inwardly, the latch pawl 32 is formed
ency of the spring 46, the counter-clockwise
with a notch 35 receiving and 'snuglyembrac'ing i; movement o'f the dise 40 can be continued until
the- cam riser I3. When the latch pawl'32 is in’its
vthe vextremity of the channel extension 52 en
lowermost position, as illustrated in Fig.`3,`-the
gages the plunger 45.
’
socket 33 faces, and is guarded by, the inwardly
Such further movement of the disc ¿l0 will shift
presented face 36 of the hook I2, so that, Aso long
Athe low points IBD, etc., of the risers I8, etc., be
a-s the latch 32 is retained in the position of Fig. L' yond the points of engagement in the notches 35
V3,1the buckle 'I4 cannot possibly Iescape from its
of the pawls 32, etc., and Abring -the notches i9,
imprisonment 'between :the hook surface 36 and
etc., into registry with the 'pawis New, the pawls
>the pawl socket 33.
are 'free ifromwcontr‘o'l 'by «the cam, ’and are >‘held
. A screw 38, received in the bore 33, anchors
-in their lowermost‘ positions only by the resilient
:one end of 'a leaf spring 39, the 'free end `of which
-eiîect of ‘the ‘springs '39. 'Since the outermost
'bears upon the -upper surface of the pawl 32, bias
points of 'the cam nosesl 34 Aof the -parvis 32, etc.,
-ing said pawltoward its position illustrated in
are spaced from the surfaces 31 of the hooks-I2,
Fig.. 3. So long as the cam riser I8 is Aengaged .in
etc., -'by a distance greater than :the radius ofthe
'the pawl notch 35, the vposition'of the .pawl is 'en
buckle bar ‘14,it will'be seen that, ifsuc‘h .buckle
itirel'yicontrolled'by the positioniof the cam i1.
bar I4 is moved across the surface-31, it willen
.An operating ‘disc‘4il 'has 'its hub 4I 'received
'gageîthe foam nose 34 ihlsuchiafashion as .to cam
ïupon;andrsecured'to,' the outer end Yof the stem >I 5,
thepawl 32 upward1y,~inthefnranner illustrated
îby‘n'heansfof a screw `42, or the like; and it will 'be
in Fig. 7. Continued `'movement of -the buckle
it‘räavious :that the cam`I1 is actuatable by said disc
will force the pawl .far'enough upwardly'to per
v
l
îAsocket'44 formed in the perimetralwall of the
3.
.'23. mit the buckle -çtolbe venteredfiizifthe socket 1.33,
whereupon'the spring £9 will snap ltliepawl ‘down
.wardly into the -:position -shown
>3. It 'will
-:plunger-*45 which is urged, by a spring 45, Yout
be clear thatthe'portion ofthe 'pawl 'below'ithe
,wardly into engagement with >the operating disc
notch 35 will, :during this operation, move up
:45. 'CIn its under surface, the disc 48 is formed i.; iwardly and ".then downwardly through the
»h'ou'sîngj ìelement 23, reciprocably receives a
>wither;ïperipherally"extending channel 41; Yand
notch
19.
,.
,
_
.it will'be obvious that the engagement of the
lifter all four buckles have 'been .assembled
~plunger 45in said channel 41 limits the throw of
with :the connector >in the :above Vdescribed man
:the operating disc 4U. When the disc is in the
ner., the ‘disc 40 'will be turned, Zin a >clockwise V‘di
:position illustrated in Fig. l, the 'cam I1 is in the -= Y recuen, untilthe plungerldîä snaps back into `the
`position illustrated in Fig. >3, ‘holding -the pawls
32, etc., in their positions ñrmly retaining the
buckles I4 against the hooks I2, etc. The disc is
deeper portion of the channel d1. At this point,
the bore *59 :and the Aisocket'tìtl will register, vand
-the pin 51 can be inserted there-into îto lock vthe
provided, ‘at »la suitable point, with a radially ex
tending bore 49 which, when the parts are in the
vvabove-mentioned positions, registers with a
socketî'E!! formed in the housing element y32; :and
-a .pin 5I is removably -received in said bore ‘49
'parts in buckle-retaining’positions.
IA's will lie-'clear 'from an .inspection-'of the-draw
ing, ’the peripheral walls 'of the ’base-element ßI’Il
and of the housing element »23 »are slotted, as 'at
for instance, îto lperîmit 'fthe projection there
Ythrough o'í lthe pawls ‘32, etc.; -and preferably
andisocket 501to hold'theparts in locked-up posi
tion.
.,
those notches will closely iit the lateral dimen
When the pin 5I is Withdrawn, the disc 4S may
sions ofthe p'a‘wls in -order to support said lpawls
be turned, in a clockwise direction as viewed in
laterally, in 'the -manner clearly --shown in Fig. Y'2.
Fig. 1, until the right-hand end of the channel '41
I claim as my invention:
-engages the plunger >45. That degree of >rotation
ll. A connector ¿for parachute harness com
of the disc 49 will shift the cam >I1 from its posi ein prising a housing, ia plurality of pawls mounted
.tion illustrated in Fig. 3 to its position illustrated
in said housing upon stationary pivots and hav
«in.~Fig.‘6, _thereby lifting all of the pawls 32, etc.`
to vshift the 4sockets 3'3 thereof into positions in
~whìchthey are not 'guarded by the hooks I 2, etc.
Thus, instantaneously, all of the buckles I4 are
released from `the connector, `.and the harness will
drop off the parachutist’s torso instantaneously.
-To vreassemble the organization, it will be clear
that it would be possible, with the assistance of
one or two other men, to move the `four buckles
into the'sockets 33 of the pawls 32, etc., and,
ing their 4fi’reezen'ds vlocated at spaced 4points about
the perimeter of said housing, »cam means 'rotat
Si
ably mounted in 'said housing‘an‘d engagingall >of
-said pavvls for `positiv'ely'moving said p'awls 'con
currently in either of .two opposite ‘directions
about their resœctive pivots, and means for
»positively locking said cam means against move
ment.
2. -A connector for ,para-chute harness compris
holding the buckles in positions like that illus
trated in Fig. '6, to return the disc 40, in a coun
~ing aplura'lityiof hooks _peripherally spaced about
-a »common-axisreach adapted .to <be engaged by
ter-clockwise direction, to the position of Fig. 1,
lthereby camming ‘the pawls into the position
`an element of a harness, a plurality of'pawls, each
associated `’with one of said hooks 'and 'movable
2,404,909.
6
5
into and out of position to engage such harness
element and hold the same against disengage
ment from its hook, a member journalled for
movement about said common axis,` and cam
means movable with said member and engaging
all of said pawls to move said pawls positively
and concurrently into and out of such engaging
radiating from said axis in vcooperative relation
with said respective hooks and mounted for os
cillation about separate axes all located in a plane
normal to said common axis, and cam means os
cillable about said common axis andïformed to
provide a plurality of »peripherally-spaoed iden
tical cam risers, one for each of said pawls, each
pawl being formed with a notch opening toward
its pivotal axis and receiving one of said cam
3. A connector for parachute harness compris
ing a plurality of hooks peripherally spaced about 10 risers, and each pawl, at one extremity of its path
of movement,-being adapted to engage a harness
a common axis, eachv adapted to be engaged by
element engaging its associated hook to prevent
an element of a harness, a plurality of pawls, each
disengagement thereof.
associated with one of said hooks and movable
8. The structure recited in claim 7 in which
into and out of position to engage such harness
the cam means is mutilated, at one extremity of
element and hold the same against disengage
each cam riser, to provide a portion clearing its
ment from its hook, a member journalled for
pawl, in which spring means cooperates with
movement about said common axis, means for
each pawl to urge the same toward retaining re
locking said member against such movement, and
lation with its hook when said clearing portion
cam means movable with said member and en
gaging all of said pawls to move said pawls posi 20 of the cam means registers with such pawl, and
in which each pawl is provided with a camming
tively and concurrently into and out of such
nose engageable by a harness element, when said
engaging position.
clearing portion of the cam means registers with
4. A connector for parachute harness compris
such pawl, to shift such pawl temporarily out of
ing a housing, a plurality of pawls mounted in
retaining relation with its hook against the tend
said housing upon stationary pivots and having
ency of its spring means.
their free ends located at spaced points about the
9. In a device of the class described, a base pro
perimeter of said housing, cam means rotatably
viding a plurality of perimetrally spaced upstand
mounted in said housing and engaging all of said
ing hooks, a pawl for each of said hooks, each
pawls for positively moving said pawls concur
pawl being formed with an outwardly-opening
rently in either of two opposite directions, about
socket and being mounted to swing into and out
their respective pivots, means for positively lock
position.
,
.
,
ing said cam means against movement, said cam
rneans being mutilated to provide portions clear
ing said pawls, and releasable means normally
limiting movement of said cam means to pre
vent registration of said clearing portions with
said pawls,
5. A connector for parachute harness compris
ing a plurality of hooks peripherally spaced about
a common axis, each adapted to be engaged by an
element of a harness, a plurality of pawls, each
associated with one of said hooks and movable
into and out of position »to engage such harness
element and hold the same against disengage
ment from its hook, a member journalled for
movement about said common axis, and cam
means movable with said member and engaging
all of said pawls to move said pawls positively
and concurrently into and out of such engaging
position, said cam means being mutilated to pro
vide portions clearing said pawls, and releasable
means normally limiting movement of said cam
of a position in which its socket faces and is
guarded by the inwardly-presented face of its
hook, and cam means journalled on said base
and engaging all of said pawls, said cam means
being movable in opposite directions to shift said
pawls positively and concurrently into and out
of such position.
l0. In a device of the class described, a base
providing a plurality of perimetrally spaced up
standing hooks, a pawl for each of said hooks,
each pawl being formed with an outwardly-open
ing socket and being mounted to swing into and
out of a position in which its socket faces and is
guarded by the inwardly-presented face of its
hook, the outermost boundary of said socket be
ing inclined outwardly and away from said socket,
and lying, when said pawl is in such position, be
yond the end surface of its hook, and resilient
50 means normally holding said pawls in such posi
tions.
l1. In a device of the class described, a base
providing a plurality of perimetrally spaced up
standing hooks, a .pawl for each of said hooks,
means to prevent registration of said clearing
portions with said pawls.
6. A connector for parachute harness compris 55 each pawl being formed with an outwardly-open
ing socket and being mounted to swing into and
ing a base element providing a plurality of hooks
out of a position in which its socket faces and is
peripherally spaced about a common axis, cam
guarded by the inwardly-presented face of its
means journalled in said base element upon said
hook, and cam means journalled on said base
axis, a housing element fixed to said base ele
ment and providing a journal mounting for said 60 and operatively engaging all of said pawls to shift
the same positively and concurrently in either of
cam means, said housing element further pro
two opposite directions, said pawls, in one posi
viding pivotal mountings for a plurality of pawls,
tion of said cam means being positively held with
each arranged for cooperation with one of said
hooks, said cam means being operatively asso 65 their sockets positioned beyond the outermost
ends of their hooks, in another position of said
ciated with said pawls to shift the same posi
cam means being positively held with their sock
tively into and out of locking relationship with
ets guarded by said hooks, and in another posi
their respective hooks, and operating means for
tion of said cam means being free from said cam
such cam means located outside said housing
element and operatively connected to said cam 70 means, the outermost boundary of each of said
means.
7. A connector for parachute harness compris
ing a plurality of hooks radiating from a common
pawl sockets being inclined outwardly and away
from said socket and lying, when said socket is
guarded by its hook, beyond said outermost end
of said hook, and resilient means normally hold
axis and each adapted to be engaged by a har
ness element, a corresponding number of pawls 75 ing said pawls in socket-guarded position,
2,404,909
7
12. In a device of lthe @lass described, a base
axis of said. stem, said housing being formed with
providing a plurality of perimetrally spaced up
a plurality of peripherally‘opening slots through
sta'ndíng hooks, va stem journalled in saidv base
each of which one of said pawls projects into>
equidístant- from said hooks, a plurality of cam
cooperative relation with its hook, operating
members, one for each> of said hooks, radiating 5 means outside said> housing member ñxed to said
from said stem, a housing member fixed to said
stem, each> of said cam members having a posi
base, overlying said @am members, and providing
tive, two-Way operative connection with one of
a journal support» for said stem, a pluralityV 'of
said paWls, and means for preventing inadvertent
pawls; one for each hook, mounted on pivotal
movement of. said operating means,
axes which are carried >by said housing member
and which lie in a commonuplane normal to ‘the
LAWRENCE M. JOHNSTON.
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