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1
Oct. 1, 1946.
¿2,408,547
- F. E. BER‘rscHxNGER
'
COUPLING
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Filed Aug. 18, 1944
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.
BY\
INVENTOR
A
TORNEY,
Patented Oct. l, 1946"
' 2,408,547
` > ÍUNiTE-D " s'rATES PATENT oFFl/CEÍ zj
Frederick E. Bertschinger, Los Angeles, Calif., as
.
»
_
Inc.,` Los
signor» to Standard Cabinet Works.
Angeles, Calif., a. corporation of California
Application'August 18, 1944, Serial No'. 549,979 « Ü
10 Claims. (Cl. 287-20.)
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may form a leg of a'folding bench or table, or the
This invention relates to aA coupling device, and
particularly to one that can be quickly disengaged
or
engaged.
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like.
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The co-operating lcoupling member has two
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Couplings of this character find’many uses; for _
example, the coupling elements mayjbe used to
-'main partswhich, together, denne a socket for
the head I. One of these parts 6 has an exterior
join adjacent pieces of shaftin'g, rods, tubes, or
face 1 is deñned by 'a plane that passes somewhat
beyond thelcenter of the cylindrical surface, as
cylindricalÍsurface and a nat face 'I.` This flat '
flexible elements, such as cords or ropes. They
may also be used to añix any such pieces or ele
ments to a iioor or wall.
shown most clearly in Fig. 3.
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part 9 of the co-operating couplingmember is
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4`It is another object of this device to provide a'
coupling that can be engaged by a mere vmove
ment of the coupling elements toward each other,
no great care being taken to align the elements.
also provided with a lower surface I0 that, to-V
gether with the surface 8, defines a’circular recess
or socket for the head I. The members 6 and 9,
as shown most clearly in Fig. 3, together form
Furthermore, the coupling remains'effective until
a substantially continuous cylindrical surface split
a locking member is intentionally moved'to a re
leasing position.
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8 slightly domed to’accommodate the correspond
ingly domed upper surface oihead I. ` The'other
vide a simple and inexpensive coupling of this
character.
.
In the lower end of the part 6 there is'a recess ‘
10
It is one of the objects of this inventionto pro
along thesurface 1, and are accommodated in a
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vmember II. Member 6 fis?securely at
This invention possesses many other advan 20 tubular
tached
Within
the tube II, and member 9 is lon
tages, and has other objects which may be made
more clearly apparent from a consideration of
one embodiment of the invention. For this pur
posev there is shown a form in the drawing accom
panying and'forming part of theípresentspeci 25
iication. The form will n_ow be described in'de
gitudinally movable therewith. In’this wam-the
continuity of thesocketlor recess 8,-_40v is inter
rupted whentheî member 9 is liftedl (see Fig, 5)_.
The head -I_..is,loc_ked against removal from» the
Y socket or recess ~8v by a projection or extension I2
attached to thepart 6.._ This extension, ras shown
most
>clearly in Eig. 4, has a crescent-,shaped area
vention; but it is to be understood Athat this
adaptedïtmengagej the annular shoulder 3. A
detailed description is not to be taken in a limit-ÃA
surface I3 .'deñnesthe lower side of pro
ingsense, since’the scope >of this invention ls' best 30 sloping
jection I2. ,The widestf. surface of the crescent
defined by the appended’claims.
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shaped area occurs along thatfline I4 (Fig. 4),
Referring to the‘drawing?
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which bisects .the members 6 and'â.. This, how
Figure l is an elevation, partly in section, of. a
ever, narrows virtually to a point where it meets
coupling embodying the invention, and showing
tail, illustrating the general principles of the in
the coupling Velements'in full engagement; -
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Fig. 2 is a longitudinal sectional viemtaken
along plane 2--42A of Fig.'1;
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the nat side -I of member` 6.
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When thevmember 9 is in the operative pîosi
tion of Fig.>2,»i the head I cannot ibe AmovedV out.`
of thesocket 8-I0; thus, member 9. serves as a
Figs.' 3 and 4 are` sectional Views', taken'respe‘œ'
tively along' correspondingly numbered planesoi » locking bolt. The restraint against removal ofV
40 head I is. imposed by the extension I5 carried at>
Fig. 2; and
the lower extremity `of'thelock member 9. ' This
Fig. 5- is a view similar to Fig. 2,y but illustrating’
extension» I5 dennes'the cylindrical surface IS
(see also Figs.r2, 4,' and 5) that co-operates withv
One’ of the coupling elements "provided witha the periphery of the head I. Accordingly, inV order
circular headV I mounted on 'a stem 2. An annu-V 45 to release the head I, the member 9 mustbe moved
upwardly to about the' position» illustrated in Fig.
lar shoulder 3 isïformed underneath the lhead I
between the edge of the head and stenifZ. This
5. in ihispositiçmgremcvai of the head a past theV `f
the manner in which thefcoupling elements V'may»
be disengaged.
coupling _elementfmay be appropriately fastened
to a rod, or shaft, or nexible element, such as a
cable or rod'.` In the present instance, however, 50
the coupling element is shown as supported by`
the aid of a flange> 4 ‘fastened toafloor 5. The
other coupling element, cci-operating lwith the
head I, may be utilized yfor an upright support, orv
the like,.rising’lfrom.`the floor 5v.` ¿Such al »support
projection I2 is-perm'itted after a'y slight relative
lateral movement _between -the coupling element
I and the socket;
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The tube' II extends substantially to the lower
ends of the memberslß andlB.- When _the locking
member 9is`movedfto the-upper position.; as shown
inÍFis-f 5; the interior surface of. the tube I I: de- ,
3
'2,408,547
4
fines, with the projection I2, a space large enough
eleme'nt also having a resilient device for urging
the other part into co-operative locking relation
for the entry and removal of the head 3.
Although the member 9 may be adequately
With the said one of said parts, said sloping sur
guided for longitudinal movement within the tube
I I, there are additional provisions for this. Thus,
face by engagement with said head, serving upon
movement of said other part to locking relation,
to urge said head into position on said projection.
2. In a deviceof- the characterr described: a ñrst
a longitudinal groove I'I (Figs. 2 and 3) is pro
vided in the face 'I of member 6. . A projection I8,
carried on> the co-,operating portion of the mem
ber 9, slides Within this groove. 'I‘he bottom sur
coupling element. having 4a headl forming an
abrupt shoulder beneath the head; and a second
.IQQupling element having a pair of relatively mov
able parts that together deñne a recess for the
head; one of said parts having a projection ex
face I9 of the groove I'I serves as a stop for pro» Y
jection I8, to position the member 9 properly with
respect to the stationary member 6. A compres-A
sion spring 20 is provided in the groove I'I above
tending beneath the head; the other part being
the projection I8, urging the- ’member '9. `to the,
movable in a direction longitudinally of the cou
' pling,l said' second. coupling element also having
a resilient device for urging the other part into
cci-operative locking relation with the said one
engaged position of Fig. 2. Thenpper end of the
spring 20 abuts against the surface 2| deñning
the upper end of the groove I‘I'. This upper sur
face 2l also serves effectively as a stop for upward
movement of the member 9. For this purpose va
of said parts; said second coupling element also
including a guide means for initially receiving
stud or pin 22 is attached to the projection I8, 20 and
guiding the head.
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and is accommodated Within spring 20. Surface
3. In a device of the character described:> a
2l serves as a stop against the upper end of Apin
coupling element having a head; and a co-oper
2'2‘ uponsuiiì'cient upward> movement of lock mem
ating coupling member defining a socket íor'the
ber 9.
"
In order to permit ready manipulation of the 25 head and comprising: a pair of parts, one of said
parts forming a lock longitudinally movable with
member 9, an oval aperture -23 is provided in the
respect
to the other part; said other part having
tube II.y This- aperture makes available rfor ma
an overhanging extension projecting beneath the
nipulation a handle member 24 'thatis formed
head, said extensionl having an inclined surface
.integrally with the member 9; YThe. adjacent sur
face ofthe lockv mem-ber 9v may be made concave, 30" adapted to serve as a guide for moving the head
past the extension, and to causesaid head to move
as illustrated by reference character 25 iii-Figs.V
the lock longitudinally to open a passage for the
2, 3, and 5, vt-o permit ready entry-of the lingers
head; and means urging said lock to active posi
of the operator.
tion when the head passes the extension. `
The Amode of roperation of the Vdevice may now
4. In a device of the character described: a
coupling element having’ 'a head;l and a co-oper
ating coupling member defining a socket for the
head and- comprising: a vpair of parts, one of
said parts forming a lock longitudinally movable
with respect to the other part; said other part
be-readilydescribed. Assuming that the coupling
isv in engagement` asiliuStrated‘in Figs. l and> 2, an
upward movement of the'me'm-ber 9-by the-'fingers
of: ythe»operator'serves toi-ree the »head I so that
there can be relative lateral movement betweenthe coupling members. This movement- is limi-tedy
only by the >interiorV surface of the tube II I; asy
having an overhanging extension projecting be
neath the- head','said extension having an in
illustrated in Fig. 5. Itis, however, sufficient- to
free the shoulder 3 from the projection I2», and
the' coupling elements may now-be» separated'. 1_
clined surface adapted to serve as a Yguide. for
moving the head past the extension, and yto cause
said head to move the lo'ck'longitud'inally to open
1 Tore-insert vthe coupling,` it »is necessary merely
Y a >passage for the head;` means, urging said lock`
to` bring the two-coupling velements together-„and
the head-»I -will automatically bereceived into the>
socket ß-iûi Thisisaccomplished by the aidv`
of the sloping surfaces t3 nand läwrespectively-on
to> active position When the head passes the eX
tension; andA a tubular guide for the head', lead
ing> to the extension'andforming a space for the
head largeen'ough to pass the extension.
the- lower `surfaces of îtheextensions` @trend 11%.»
A5. In 'a device oi'lthe'character'descríbed: a
When the head I isfí‘lrst:introduced-into-the.co.--.
coupling element having' a head; and a co-op
operating coupling member .1S-:9;- the. head. con».
erating coupling member d'eñning a "socket for
tact@r the slopingsurtaces L31 andoìê. -...Eurther in
the- `h'eadiand comprisingg‘ajpai’r of parts, one
Ward. movement of theihead. .Ifurges-.the member
of' said’ parts forming a'lock longitudinally mov
9 upwardly. At the same timer surfaceIB guides
the head I. .toward ythe left. Upward. :movement . able with respect to the other part; said other
part having an overhanging extension project
of'head. I. .can continue until. the shoulderß on.
ing beneath the head, 'said extension 'having an
the headv I reaches the upperu level ofthe-...prd
inclined surface', adapted to serve as a guide for
jection I2. Atrthat time, the head I„-.canymovey
moving the ‘heacl'past the extension, and to `cause
laterally into thesocket or recess'> 8.-_-I.Il1: .andthe .
f saidhead to move the lock longitudinally to open
a kpassage for the head; and'. meansv urging` said
lock` to active position when the head passes the
spring 20 retnrnsthe memberS¢toits¢looking
position. , Thesloping surface 2,6 o_o-operates with
then head VI to `urge .the couplingÀ members into full
engagement.
extension; said lock having a sloping surface for
urging- the head into 'locking relation'with the
,
The4 inventor claims:
V1.A_I,n_a device of the characterA described:A la firstv
couplingA element having _._a head _forming an
abrupt shoulder beneath the head; and a second
coupling element having a pair-of relatively mov-V
able parts that together deñne a recess for> the-
head; one of said parts having af 'projectionex
tendingy beneath »the head; the other part being
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projection.
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l6'. In a device of' the character described: a
coupling elementY having ahead; and. a coi-op
erating: coupling memberídeiinin’g a' socket for
the’ head and comprising:> a ' pair of parts, one
j of said parts forming a lock 'longitudinally' mov
able with vrespect to the other part; said; other
partI having an overhanging extension, projecting
movable in a‘direction longitudinally ofthe cou
beneath- the head', -‘said’ extension having an in
pling a-nd having a longitudinally sloping surface'
lclined
Asurface adapted toserve’` as agllideïfor‘
engageable with said rhead,- saidsecond coupling» 751
moving the'head past the uexten‘s'ion,“an‘d"t'o 'cause'
2,408,547
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in which the head may be accommodated; the
co-operating end of the locking member having
a sloping surface for urging the head laterally
said head to move the lock longitudinally to
open a passage for the head; means urging said
lock to active position when the head passes the
into full coupling position.
extension; and a tubular guide for the head, lead
9. In a device of the character described: a
ing Ito the extension and forming a space for'the
coupling element having a round head defining
head large enough to pass the extension; said
an abrupt shoulder below the head; and a co
lock having a sloping surface for urging the
operating couplingy comprising: a pair of mem
head in a direction transverse of the extension,
bers together defining a socket for the head, one
said lock when in place restraining transverse
of said members being a locking member mov
10
uncoupling movement of the head.
able longitudinally with respect to the head, and
7. In a device of the character described: a
the other member having a recess which forms
coupling element having a round head deñning
with the locking member a circular opening f1t
an abrupt shoulder below the head; and a co
ting the head, said other member also having an
operating coupling member comprising: a pair
inwardly directed portion adapted to engage be
of members together defining a socket for the 15 low the head, said locking member when in place
head, one of said members being a locking mem
restraining the head from uncoupling motion
-ber movable longitudinally with respect to the
head, and the other member having a recess
which forms with the locking member a circu
lar opening fitting the head, said other member
also having an inwardly directed portion adapted
to engage below the head, said locking member
when in place restraining the head from un
coupling motion transverse to the socket; and a
tubular guide extending below the socket; said
guide, when the locking member is out of po
sition, defining withV the inwardly directed por'
tion a space in which the head may be accom
modated.
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transverse to the socket; and a tubular guide '
extending below the socket; said guide, when
the locking member is out of position, deiining
with the inwardly directed portion a space in
which the head may be accommodated; said guide
also providing a support for both the locking
member and the recess forming member.
10. In a device of the character described: a
coupling element having a round head deñning
'an abrupt shoulder below the head; and a co
operating coupling member comprising: a pair
of members together deñning a socket for the
head, one of said members being a locking mem
8. In a device of the character described: a 30 ber movable longitudinally with respect to the
coupling element having a round head defining
head, .and the other member having a recess
an abrupt shoulder below the _head; and a co
which forms with the locking member a circu
operating coupling member comprising: a pair of
lar opening ñtting the head, said other member
members together deñning a socket for the head,
also having an inwardly directed portion adapted
35
one of said members being a locking member
to engage below the head, said locking member
movable longitudinally with respect to the head,
when in place restraining the head from uri
and the other member having a recess which
coupling motion transverse to the“ socket; and
forms with the locking member a circular open
a tubular guide extending below the socket; said
ing lfitting the head, said other member also hav
guide, when the locking member is out of posi
ing an inwardly directed portion adapted to en
tion, deñning with the inwardly directed pOi‘tíOn
gage below the head, said locking member when
a space in which the head may be accommodated;
in place restraining the head from uncoupling
the pair of members togetherl having a circu
motion transverse to the socket; and a tubular
lar cross section, the recess forming member de
guide extending below the socket; said guide, 45 fining the major portion of the circle.
when the locking member is out of position, de
FREDERICK E. BERTSCHINGER.
ñning with the inwardly directed portion a space
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