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Патент USA US3042808

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July 3, 1962
B. G. COPPING
3,042,798
BERTH LIGHT
Filed May 7, 1959
2 Sheets-Sheet 1
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llqllr Q
1
INVENTOR.
Jim/v q~radp?va
45a.
J0
July 3, 1962-
B. G. COPPING
3,042,798
BERTH LIGHT
Filed May 7, 1959
’
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2 Sheets-Sheet 2
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-
INVENTOR.
United States Patent 0 ” ce
3,@42,798
Patented July 3, 1962
1
2
3,042,798
FIGURE 5 is a View similar to FIGURE 1 with the
lamp shade withdrawn from the recess.
LIGHT
FIGURE 6 is a perspective view of the lamp ?xture
in the position of FIGURE 5.
Brian G. Capping, New York, N.Y., assignor to ?wivelier
Company, Inc, Nanuet, N.Y., a corporation of New
York
Filed May 7, 1959, ser. No. 811,669
13 Ciaims. (Cl. 240-78)
construction taken through line 7—-7 of FIGURE 7A
looking in the direction of the arrows.
The instant invention relates to lighting ?xtures in gen
FIGURE 7A is a cross-section taken through line 7A—
7A of FIGURE 7 looking in the direction of the arrows.
FIGURE 7 is a cross-section of a modi?ed joint means
eral and more particularly to a ?xture in which the lamp
FIGURE 8 is an end view of one of the clamp mem~
shade may be selectively disposed within and withdrawn
bers of the modi?cation of FIGURE 7 looking in the di
from a recess and when withdrawn from the recess the
lamp shade may be rotated so as to direct light to a se
lected portion of an extensive area.
rection of arrows 8——8.
moved from their recesses must be positionable so as to
direct light over a selected portion of an extensive area.
The securement of box 11 to wall 13 is made by means
well known to the art such as bracket 100 and fastening
~
Now referring to the ?gures, the recessed lighting ?x
ture 10 is comprised of an open sided generally rectangu
Aboard ship and often on land thereare many appli 15 lar wall box 11 having weakened areas de?ning knockouts
cations requiring beds foldable into Wall recesses. As
11a, 11b for passage of current carrying conductors (not
sociated with the folding beds are lamps for reading
shown). The open side of box 11 is covered by a face
purposes and general lighting of the bed area. Thus, these
plate assembly 12. Wall box 11 is adapted to be secured
lamps must be foldable into wall recesses so as not to
to wall 13 after being inserted into wall opening 14 with
interfere with folding of the beds. The lamps when re 20 the outwardly turned lip 15 of box 11 abutting Wall 13.
These features are included in the. device of the in
stant invention by providing a wall box and a cover as
means 101, 102.
.
Bracket tilt} is U~shaped to receive wall box 11 which
sembly therefor which comprises a faceplate having a 25 is secured thereto by studs 10! extending inwardly from
joint means mounted at one of its ends to the side of the
box 1459 which cooperate with nuts 102. The free ends
faceplate which faces the inside of the wall box. A lamp
194 of bracket arms abut the inner surface 105 of wall 13
shade secured to the other end of the joint means is dis
to prevent outward movement of ?xture 10.
posed on the other side of the faceplate.
'
Faceplate assembly 12 comprises faceplate 16, joint
The joint means is constructed to permit the lamp
means 17 ‘which is mounted at one end thereof to faceplate
shade to move into and out of a faceplate recess by piv
otal movement about an axis parallel to the faceplate.
16, and lamp shade assembly 18 which is mounted to joint
means 17 at the other end thereof.
Once the lamp shade is withdrawn from the faceplate
Lamp shade assembly 18 comprises an open ended
recess the shade is then pivotable through substantially
elongated somewhat comically-shaped shade 19 having
360° about an axis transverse to the axis of the path 35 secured thereto and disposed therein at the closed end
which light rays are directed by the lamp shade.
thereof a bracket 20 to which bulb receptacle 21 is
The joint is constructed of two hollow cylindrical mem
bers joined, at right angles at a pivotal connection. As
mounted, in a manner well known to the art.
Incan
descent lamp 22 is removably mounted in receptacle 21.
Faceplate 16 is provided with formations de?ning a
will be hereinafter explained, a single compression spring
is utilized to supply the forces which frictionally restrain
recess 27, which is of a shape conforming to half of the
relative movement between the hollow cylindrical mem
ber as well as between the joint means and the faceplate.
external surface of lamp shade 19 so thatsubstantially
half of shade assembly 18 may be entered therein (FIG
Accordingly, a primary object of the instant invention
URE 1). Three flat head screws 23 passing through clearis to provide a novel construction for a recessed-type
ance holes 25 in faceplate 16, with the heads thereof
lamp ?xture which is economical to produce and is more 45 disposed in depressions 26 at the back of recess 27, mate
compact than prior art devices of the same type.
with the threads of apertures in box 11 thereby removably
Another object is to provide a recessed-type lamp ?x
securing faceplate assembly 12 to wall box 11.
I
ture in which the lamp shade is secured to one end of a
Joint means 17 comprises two cylindrical tubular mem
joint means and is disposed on one side of a faceplate
bers 30, 31 which are secured together by clamp 32 with
to which the other end of the joint means is secured on 50 their longitudinal axes in transverse intersecting relation
the other side of the faceplate.
ship. Tube member 39 has a spherical closure at one end
Still another object is to provide a novel joint means
and is open at the other end while tube member 31 is open
for a recessed type lamp ?xture.
at both ends thereofv The longitudinal opening through
A further object is to provide a novel joint comprised
tube member 31 is in alignment with shade opening 29
of two tubular members, one pivotally mounted to a
?xed member and the other pivotally mounted to said one
member with a single spring means being utilized to re
strain pivotal movement of both tubular members.
These as well as other objects of the instant invention
shall ‘become readily apparent after reading the follow
ing description of the accompanying drawings in which:
FIGURE 1 is a longitudinal cross-section of a recessed
lamp ?xture, constructed in accordance with the teach
ings of the instant invention, mounted to a wall.
FIGURE 2 is a rear view of the faceplate and the
members mounted thereto.
’ ’
for the passage of wires (not shown) from bulb recep
tacle 21 through tube member 31 to the interior of wall
60
box 11.
A ballmember or sphere 33 is disposed in tube mem
ber St} at the closed end thereof and a square rod 34
passes through a similarly shaped opening in sphere 33
located at a diameter thereof.
The ends of rod 34' are -
rigidly secured to brackets 35 ‘by set screws 36.
Brackets
‘35 are welded or otherwise secured to faceplate 16 on
the side thereof facing the interior of wall box 1-1. The
r square cross-sections of rod 34 and its receiving aperture
through sphere 33, together with the rigid securement of
FIGURE 3 is a top viewof' the lamp shade, partly
rod 34, prevent rotation of sphere 33.
Y
» >
_
sectioned, illustrating the securement of the joint means
Clamp. 32 includes an element 40 which bears against
and the lamp socket to the lamp shade.
the outer surface of tube member 31 and is positioned
FIGURE 4 is a plan view, partly sectioned, of the 70 between the outwardly turned lip 41 at one end of mem
lamp ?xture of; FIGURE 1 with the shade assembly re
ber 31 and stop 42 which extends radially from member
31 at a- point intermediate the ends thereof. Stop 43,
moved.
_
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>
3,042,79s
'secured to clamp elementr40, is positioned in the path of
stop 42 and cooperates therewith to limit the relative rota
tion between tube members 30, 31 to 360° less the thick
, ness of stops 42, 43.
.
A
surface of wall 13 as well as to a support column, struc
tural member, or at any other convenient location.
While the present invention has been described in con
nection with speci?c embodiments and applications, it is
'
Joint means 17 further includes a partially loaded com— 61 to be understood that modi?cations and variations may be
made therein that fall Within the broader spirit and scope
7 pression spring 47 disposed within tube member 30. Half
thereof, as de?ned in the appended claims.
round friction member 48, disposed at one end of spring
I claim:
.
.
7 ’47, is biased thereby against the outer surface of tube
member 31. Friction member 49, having a spherically
shaped pocket, is disposed at one end of ‘spring 47 and is
biased thereby into engagement with sphere 33.
.
v The other end of tube member 31 extends through
1'. A recessed lamp ?xture assembly comprising a box
having an open side, a face plate forming a closure for
said open side, a joint means secured to said face plate
at one'side thereof facing the inside of said box, ‘a lamp
shade disposed on the other side of said faceplate and
secured to said joint means; a recess ‘de?ned by a forma
faceplate slot 50 and is provided with radially extending
wings 45 which abut the external surface of shade 19.
Screws'46 pass through clearance openings in wings 45 15 tion in said faceplate; said jointmeans being constructed
to permit said shade to be entered into and withdrawn
into tapped openings 45a inybracket 20 thereby securing
from said recess; said joint means including a ?rst and a
shade assembly 18 to jointrneans 17 and securing bracket
second pivotal axis for said lamp shade positioned trans
20 to shade 19.
.
_ Toggle switch 51, for selecting the on and off condi
verse with respect to each other; said joint means also
tions of lamp 22, is secured to faceplate 16. For the sake 20 including a ?rst and a second tubular cylindrical member
pivotally secured to one another with their cylindrical
of simplicity, even though ?xture 10 is an electrically pow
axes transverse and intersecting; said ?rst pivotal axis
ered device, all wiring has been omitted since the wiring
being positioned perpendicular to said ?rst member cylin
extending from'socket 21 is apparent to anyone having
drical axis; said second pivotal axis being coaxial with
any familiarity with the art.
.
'
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said second member cylindrical axis.
‘
a
When shade 19 is entered into recessr27 (FIGURE 1),
2. A recessed lamp ?xture assembly comprising a box
only a small portion of ?xture 10 extends forwardly of
wall .13. In ‘moving ‘shade 19 out of recess 27 to the
position of FIGURE 5, tube member ‘30 pivots about ~
having an open side, a face plate forming a closure for
said open side, a joint means secured to said face plate
at one side thereof facing the inside of saidrbo'x, a lamp
sphere 33 which is disposedbetween brackets 35 and
maintained against rotation’ by square rod 34 which ex 30 shade disposed on the other sideof said face plate and
secured to said joint means; a recess de?ned by a forma
tends through aligned round openings 60 in tube member
tion in said face plate; said joint means being constructed
30. ' One end of joint means 17 extends through opening
50 ‘in faceplate 16 which provides clearance for joint . 'to permit said shade to be entered into and withdrawn
from said recess; said joint means including a ?rst and a
means 17 as shade 19 is moved between the positions of
FIGURES l and 5. When shade 19 is in the position of 35 second pivotal axis for said lamp shade positioned trans
verse with respect to each other; said jointrmeans also
FIGURE 5, it may be rotated through substantially 360°
including a ?rst and'a second tubular cylindrical member
about a pivotal axis de?ned by the cylindrical axis of
tube member 31. '
'
.
' ‘It is to be noted'that the pivotal axis de?ned by tube
pivotally secured to, one anotheriwith their cylindrical
axes transverse and’ intersecting; said ?rst pivotal axis
‘member 31 is transverse to the longitudinal axis of shade 40 being positioned perpendicular to said ?rst ‘member cylin1
drical axis; said seco'ndpivotal
being coaxial with
19 so thatlight from lamp 22 may be directed to a selected
portion of an extensive area.
This e?ect is further in
creasedby locating the pivotal axis for shade 19 de?ned
said second member cylindrical axis; "said joint means.
further'including a spherical memberldisposed within said
by rod 34 and tube member 31 in non-intersecting rela
tionship.‘ That is, the planes in which the pivotal axes
?rst member at a ?rst end thereof, a compression spring
_ are located are positioned at right angles to one another.
7' FIGURES 7-8 illustrate a modi?ed construction for a
‘ joint means in which the tube members 70, in which ball
' 1 r33_is disposed is provided with clamp portion-71 molded '
means at opposite’ ends of said'spring means ‘urged into
integrally therewith.‘ The other tube member 72 is’ rotat
means disposed Vwithin' said ?rst member, and friction
engagement with said spherical member and said second,
member; said ?rst member having a closure'at its said
?rst end forming a seat forf'said sphericalmember.
, '3. A recessed lamp ?xture assembly comprising a box
ably mounted to tube member 70 by clamp member 74.
fastened to clamp portion 71'by screws'75. As should be
having an open sidefa face plate’ forming a closure for~
' s'aidopen side, a’ joint meanssecured to saidfa'ce plate
evident the opening 50 must be widened to accommodate
clamp member 74. The other reference numerals uti
lized in FIGURES 7-8 which are duplicates of those ref
at one side thereof facing the inside of said box, a lamp
shade disposed on the other side ‘of-said face plate and
55, secured to said joint means; a re'cessde?ned by a forma
erence numerals of the other ?gures indicate correspond
tion in said face plate; said joint means’ being constructed
' to permit said shade :to be entered into and vwithdrawn
7 ving elements. '~
. With both embodiments of the joint means the single
' spring 47 ‘drives both friction members 48, 49 against
from’ said recess; said joint means including a ?rst and a
second pivotal axis for said lamp shadepositioned trans
'tube member 31 and 'ball 33, respectively. Thus, the 60 verse'with respect to?each other; said joint means also
V1'6?CCtOl‘f19 will remain‘ in'the {position 'to which it is
including, a ?rst andgasecond tubular cylindrical member
'moved in spite of the effect of gravity. 1
f ' i '
pivotally secured totone, another with their cylindrical
'Ball133has been illustratedias being secured against
axes transverse and intersecting; said ?rst pivotal'axis.
rotation with respect to faceplate 16 by means of rod 34 ' being positioned perpendicular .to said ?rst’ member cylin
and brackefs'3‘5. The same 'e?fect may be obtained by
drical axis; said. second pivotal axis being coaxial with
forming- the ball integrally with the faceplate. ' Inthis
said second member. cylindrical axis; said-zjoint ‘means
event the tube member ?tted over the ‘ballv must have a, 7 further including a spherical'member disposed within said
slot to provide clearance for the-joining section between
?rst member at a ?rst end thereof, a‘compression spring
the ball and faceplate.
'
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‘
i
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I
' ' It is toibe understood that the designation of ?xture 70 means disposed WlthiILSald ?rst member, and friction
10 as ‘a “re'cessed”~?xture doesnot‘ limit‘the mounting
means at' opposite ends of said spring‘means urged into
f thereof to a‘ position inside a wall. I The term “recess”
engagement with said spherical ‘member and said second
merelyfrefers to the fact that lamp shade assembly 18 ‘is’
adapted to be partially entered into faceplate recessT27.'
’ Clcarly,,wal1;box 11 may be mounted upon the external
?rst end formin'ga seat for’said spherical'member; means
member; said ?rst member having a closure’a't its said
for maintaining said spherical member against rotation?
3,0423%
5
While permitting pivotal movement of said ?rst member
relative to said spherical member.
4. A recessed lamp ?xture assembly comprising a box
having an open side, a face plate forming a closure for
said open side, a joint means secured to said face plate at
one side thereof facing the inside of said box, a lamp shade
disposed on the other side or" said face plate and secured
to said joint means; a recess de?ned by a formation in
6
second pivotal axis for said lamp shade positioned trans
verse with respect to each other; said joint means also
including a ?rst and a second tubular cylindrical member
pivotally secured to one another with their cylindrical
axes transverse and intersecting; said ?rst pivotal axis
being positioned perpendicular to said ?rst member cylin
drical axis; said second pivotal axis being coaxial with
said second member cylindrical axis; said lamp shade
said face plate; said joint means being constructed to per
being ?xedly secured to said second member.
mit said shade to be entered into and withdrawn from said 10
7. In a recessed lamp ‘?xture the combination com
recess; said joint means including a ?rst and a second
prising a plate, a joint means secured at one end thereof
pivotal axis for said lampshade positioned transverse With
to said plate at a ?rst side thereof, a lamp shade disposed
on the other side of said plate and secured to said joint
means at the other end thereof by means extending
respect to each other; said joint means also including a
?rst and a second tubular cylindrical member pivotally
15 through an aperture in said plate; said joint means in
verse and intersecting; said ?rst pivotal axis being posi
cluding a ?rst and a second pivotal axis for said lamp
tioned perpendicular to said ?rst member cylindrical axis;
shade positioned transverse with respect to each other;
said second pivotal axis being coaxial With said second
said means extending through said aperture comprising
member cylindrical axis; said joint means further includ
a tubular member having said lamp shade secured thereto;
ing a spherical member disposed Within said ?rst member 20 said tubular member having its tubular axis de?ning said
at a ?rst end thereof, a compression spring means disposed
second pivotal axis.
secured to one another With their cylindrical axes trans
Within said ?rst member, and friction means at opposite
8. In a recessed lamp ?xture the combination com
ends of said spring means urged into engagement With said
prising a plate, a joint means secured at one end thereof
spherical member and said second member; said ?rst mem
to said plate at a ?rst side thereof, a lamp shade disposed
her having a closure at its said ?rst end forming a seat for 25 on the other side of said plate and secured to said joint
said spherical member; means for maintaining said spheri
means at the other end thereof; said joint means including
cal member against rotation While permitting pivotal move
a ?rst and a second pivotal axis for said lamp shade
ment of said ?rst member relative to said spherical mem
positioned transverse with respect to each other; said
ber; clamp means securing said second member to said
joint means also including a ?rst and a second tubular
?rst member for movement in unison therewith; said clamp
cylindrical member pivotally secured to one another With
means also permitting said second member to rotate rela
their cylindrical axes transverse and intersecting; said
tive to said ?rst member.
?rst pivotal axis being positioned perpendicular to said
5. A recessed lamp ?xture assembly comprising a box
?rst member cylindrical axis; said second pivotal axis
having an open side, a face plate forming a closure for
being coaxial with said second member cylindrical axis;
said open side, a joint means secured to said face plate at 35 said second member being movable through an aperture
one side thereof facing the inside of said box, a lamp
shade disposed on the other side of said face plate and
secured to said joint means; a recess de?ned by a forma
in said plate as said lamp shade is moved about said ?rst
pivotal axis.
9. In a recessed lamp ?xture the combination compris
tion in said face plate; said joint means being constructed
ing a plate, a joint means secured at one end thereof to
to permit said shade to be entered into and Withdrawn 40 said plate at a ?rst side thereof, a lamp shade disposed
from said recess; said joint means including a ?rst and a
on the other side of said plate and secured to said joint
second pivotal axis for said lamp shade positioned trans
means at the other end thereof; said joint means including
verse With respect to each other; said joint means also in
a ?rst and a second pivotal axis for said lamp shade posi
cluding a ?rst and a second tubular cylindrical member
tioned transverse with respect to each other; said joint
pivotally secured to one another With their cylindrical
means also including a ?rst and a second tubular cylindri
axes transverse and intersecting; said ?rst pivotal axis being
cal member pivotally secured to, one another with their
positioned perpendicular to said ?rst member cylindrical
cylindrical axes transverse and intersecting; said first
axis; said second pivotal axis being coaxial with said sec
pivotal axis being positioned perpendicular to said ?rst
ond member cylindrical axis; said joint means further in
member cylindrical axis; said second pivotal axis being
cluding a spherical member disposed Within said ?rst
coaxial with said second member cylindrical axis; said
member at a ?rst end thereof, a compression spring means
joint means further including a spherical member dis
disposed within said ?rst member, and friction means at
posed Within said, ?rst member at a ?rst end thereof, a
opposite ends of said spring means urged into engagement
compression spring means disposed within said ?rst mem
with said spherical member and said second member; said
ber, and friction means at opposite ends of said spring
?rst member having a closure at its said ?rst end forming
means urged into engagement with said spherical member
a seat for said spherical member; means for maintaining
and said second member; said ?rst member having a
said spherical member against rotation While permitting
closure at its said ?rst end forming a seat for said spherical
pivotal movement of said ?rst member relative to said
member.
spherical member; clamp means securing said second
10. In a recessed lamp ?xture the combination com
member to said ?rst member for movement in unison
prising a plate, a joint means secured at one end thereof
therewith; said clamp means also permitting said second
to said plate at a ?rst side thereof, a lamp shade disposed,
on the other side of said plate and secured to said joint
means at the other end thereof; said joint means including
a ?rst and a second pivotal axis for said lamp shade posi
member to rotate relative to said ?rst member; said face
plate having an opening therein through which said sec
ond member extends for all angular positions of said ?rst
member.
tioned transverse with respect to each other; said joint
6. A recessed lamp ?xture assembly comprising a box
means also including a ?rst ‘and a ‘second tubular cylin
having an open side, a face plate forming a closure for
drical member pivotally secured to one another with their
said open side, a joint means secured to said face plate
cylindrical axes transverse and intersecting; said ?rst,
at one side thereof facing the inside of said box, a lamp
70 pivotal axis being positioned perpendicular to said ?rst
shade disposed on the other side of said'face plate and
member cylindrical, axis; said second pivotal axis being
secured to said joint means; a recess de?ned by a forma
coaxial with said second member cylindrical axis; said
tion in said face plate; said joint means being constructed
joint means further including a spherical member disposed
to permit said shade to be entered into and Withdrawn
within said ?rst member at a ?rst end thereof, a compres
from said recess; said joint means including a ?rst and a
sion spring means disposed Within said ?rst member, and
3,042,798
said second member; said ?rst member having a closure
at its said ?rst rend forming a seat for said spherical mem
closure at its said ?rst end forming a seat for said spheri
cal member; means for maintaining said spherical mem4
ber against rotation while permitting pivotal movement of
said ?rst member relative to said spherical member; clamp
ber; means for maintaining said spherical member against
rotation while permitting pivotal movement of said ?rst
member relative to said spherical member.
means securing said second member to said ?rst member
for movement in unison therewith; said clamp means also
permitting said second member to rotate relative to said
11. ‘In a recessed lamp ?xture the combination com
?rst member; sald lamp shade Ibeing elongated and having
friction means at opposite ends of said spring means
urged‘into engagement with said spherical member and
the longitudinal axis thereof positioned in, transverse
prisinga plate, a joint means secured at one end thereof .
to said plate at a ?rst side thereof, a lamp shade disposed 10 intersecting relationship with said second pivotal axis.
on‘ the other side of said plate and secured to said joint
means at the other end thereof; said joint means including
a ?rst and a second'pivotal axis for said lamp shade posi
tioned transverse with respect to each other; said joint
' means also including a ?rst and a second tubular cylindri
cal member pivotally secured to one another with their
cylindrical axes transverse and intersecting; said ?rst pivot
13. In a recessed lamp ?xture the combination compris
ing a plate, a joint means secured at one end thereof to
said plate at a ?rst side thereof, a lamp shade disposed on
the other side of'said plate and secured to said joint means
at the. other end thereof; said joint means including a
?rst and a second pivotal axis for said lampshade posi
tioned transverse with respect to' each other; said joint
al axis being positioned‘perpendicular to said ?rst mem
means also including a ?rst and a second-tubular cylin
ber cylindrical axis; said second pivotal axis being coaxial
,with said second member cylindrical axis; said joint,
drical member pivotally securedto one another with their
cylindrical axes transverse and intersecting; said ?rst
means further including a spherical member'dispo'sed
within said ?rst member at a ?rst end thereof, a com
pression spring means disposed within said ?rst member,
pivotal axis being positioned perpendicular to said ?rst
member cylindrical axis; said second. pivotal axis being
‘coaxial with said second member cylindrical axis; said
said second member; said ?rst member having a closure
at its said ?rst end forming a seat for said spherical
joint means further including a spherical member dis
posed within said ?rst member at a ?rst end thereof,
a compression spring means disposed within said ?rst
member, and friction means at opposite ends of said
member; means for maintaining said spherical member
against rotation while permitting pivotal movement of
said ?rst member relative to said spherical member; clamp
member and said second member; said ?rst member hav
ing a closure at its said ?rst end forming a scatter said
and friction means at oppositéends of said spring means
urged into engagement with aid spherical member and
means securing said second member to said ?rst member
for movement in unison therewith; said clamp means also
permitting said second member to rotate relative to said
?rst member.
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~
'12. In a recessed lamp ?xture the combination compris
ing a plate, a joint means secured at one. end thereof to'
said plate at a ?rst side thereof, a ‘lamp shade disposed on
spring means urged into engagement with said spherical
spherical member; means for maintaining said spherical
member against rotation While permitting pivotal move
ment of said ?rst member relative to’ said spherical mem
ber; clamp means securing said second member to said
?rst member for movement in unison therewith; said
clamp means also permitting said second member to
rotate relative to said ?rst member; said lamp shade being
elongated and having the longitudinal axis thereof posi
the other. side of said plate and secured to said joint
means at the other end thereof; said joint means including
a ?rst and a second pivotal axis for said lamp shade posi
tioned in transverse intersecting relationship with said
cylindrical axes transverse and intersecting; said ?rst
References Cited in the ?le of this patent
second pivotal axis; said lamp shade 1being ?xedly secured
to said second member; said plate having an opening
' tioned transverse with respectto each other; said joint
.therein through which said second member ,extends for
means also including a ?rst and a second tubular cylindri
calrme'rnyber pivotally secured toro’ne another with their. ‘ all'angular positions of said ?rst member.
pivotal axis, being positioned perpendicular to said ?rst
member cylindrical axis; said second pivotalraxis being
coaxial with said second member cylindrical axis; said‘
joint means further including aspherical 'member dis-.
posed within said ?rst member at a ?rst end thereof, a
compression spring means disposed within said ?rst 'mem-.
her, and friction means at opposite ends of said spring
means urged into engagement with said spherical member
and saidseoondmember; said ?rst member having a '
UNITED STATES PATENTS
2,636,979
Schwartz ______ _; ____ __ Apr. 28, 1953
r 2,678,381
2,816,216
Schwartz ________ __’____ May 1-1, 1954
Dasher ______________ __ Dec. 10', 1957
OTHER REFERENCES
Swivelier Co., Mar. 29,, 1949.
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