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Патент USA US2106073

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Jan. 18, 1938.
w. J: STUBER
2,106,073
SHADE ROLLER PLUNGER TRUNNION
Filed Oct. _ 27,‘ 1934
520872;)’: 1
Patented Jan. 18, 1938
UET
STATES
2,106,073
SHADE ROLLER PLUNGER TRUNNION
Walter J. Stuber, Philadelphia, Pa., assignor to
Carey-McFall Co., Philadelphia, Pa., a cor
poration of Pennsylvania.
Application October 27, 1934, Serial No. 750,360
12 Claims.
This invention relates to winding rollers for
shades or curtains at the windows of buildings or
i)
closed vehicles, such as automobiles, busses, rail
way coaches, etc., wherein the trunnions and/or
the hearings or brackets which support the trun
nions at the opposite ends of the shade rollers are
inaccessible when the curtains are hanging in
place at the windows.
The object of the present invention is to pro
ll) vide a trunnion construction for at least one end
of a shade roller whereby the normally projecting
end of the trunnion may be retracted to a posi
tion substantially flush with the end of the roller,
to permit the freed end of the roller to be swung
out of operating position for allowing the trun
nion at the opposite end of the roller to be readily
withdrawn from its support.
Another object of the invention is to mount the
retractable trunnion in the end of the roller in
such a manner that retraction thereof may be
readily accomplished by a slender instrument in
serted into an opening formed in the barrel of the
roller adjacent the one end thereof.
The construction and operation of the device
will be readily understood upon referring to the
accompanying drawing, of which:
1 illustrates, in longitudinal sectional eleva
tion, one end of a shade roller in which the
(Cl. 156—36)
the ?xed trunnion for holding the curtain roller
in an adjusted position against the action of the
winding spring.
The opposite end of the roller, i. e. the one
which is illustrated in the drawing, normally is
provided wth a circular trunnion rigidly mount
ed in the end of the roller and arranged to rotate
in the roller-supporting bracket or other sup
port disposed adjacent said end of the roller, the
?xed trunnion being mounted in a corresponding
support having a slotted opening for non-rotat
ably supporting the ?attened end of the trunnion
in the usual manner.
In ordinary cases these brackets which support
the rollertrunnions are exposed so that the cir
cular trunnion in the one'end of the roller may
be mounted in the one bracket having the circular
bearing opening after which the opposite end of
the roller with the spring-anchoring trunnion
may be set in place, with the flat or rectangular
end of the spring-anchoring trunnion placed in
the slotted opening of the adjacent bracket. In
the newer designs of automobiles the brackets are
or will be concealed or flush with those portions
of the window frame adjacent which the op
posite side edges of the curtains are disposed,
in view of which the normally rigid trunnion at
the one end of the roller must be made movable in
spring-pressed trunnion is mounted;
orderto install or remove the shade at or from
Fig. 2 is a transverse sectional elevation taken
on the line 2--‘..’, Fig. 1;
Fig. 3 is a perspective view of the assembled
roller end-bung and trunnion prior to insertion of
the assemblage into the end of the curtain roller;
Fig. 4 is a sectional plan view taken on the
the window.
line 4—4, Fig. 2; and
Fig. 5 illustrates the trunnion in its retracted
position.
The curtain roller l, in the present instance, is
40 of the hollow, barrel type composed of sheet metal
rolled into tubular form and seamed as at 2
longitudinally thereof. Diametrically opposite
and parallel to the seam 2 is a grooved or other
wise recessed rib 3 for receiving the one end of
“ the curtain.
The one end of the roller (not shown) is nor
mally provided with the usual form of ?xed trun
nion or spindle to one end of which is secured
one end of the roller-operating spring (not
shown), the opposite end of said spring being
anchored in any suitable manner to the body or
barrel of the roller. In said end of the roller is
provided a transversely extending plate which has
rotary bearing on the ?xed trunnion and carries
a pair of pawls arranged to engage a ratchet on
.
30
In mounting the curtain, the spring-anchorin
trunnion is ?rst slipped into a rectangular open
ing formed in a bearing inset into the frame of the
window to be screened by the curtain. The op
posite end of the curtain is then moved into posi4 35
tion to line up the second trunnion with its bear
ing opening in the opposite side of the window
frame.
In order to accomplish the setting and removal
of the round trunnion in and from its bearing
opening in the one side of the frame, the plunger
trunnion illustrated in the drawing has been pro
vided. The trunnion comprises a spring-pressed
trunnion 5 which is axially aligned with the roller
l and has an outer portion 6 which extends beyond 45
the end 7 of the roller, and is suitably mounted in
a bearing 4 which is inset and flush with the sur
face a, of the window frame A.
The trunnion 5 is slidably mounted at 3 and 9
in the end walls It and I i respectively of the
roller end-bung l2 and is provided with an in
tegral collar or pair of collars it which in turn
is provided with or forms a circumferential groove
It on the trunnion 5 adjacent the plate l0.
Encircling the inner main portion it‘: of the 55
2
2,106,073
trunnion 5, between the inner side of the collar I3
and the end Wall ll of the bung i2, is a spring I6
which normally maintains the outer end 6 of the
trunnion 5 in a projected position.
In mounting the curtain roller in the window
frame A, the outer end 8 of the trunnion 5 is
slid along the surface a of the window frame and
moves inwardly of the roller l until the trunnion
ll is aligned with the circular opening in the bear
10 ing ll in which it is to be mounted, whereupon the
spring l6 projects the end 6 of the trunnion 5.
into the bearing opening of the frame.
In order to remove the roller from the frame,
it is necessary to retract the trunnion 5 and for
this purpose the roller barrel 5 and the bung l2
are provided with aligned openings ill and I8 re
spectively, through which a releasing tool 253 may
be inserted. The inner end IQ of the tool 28 enter
ing the groove id of the collar ill will, as the tool
is swung from position shown in Fig. 1 to the
position shown in Fig. 5, retract the end 5 of the
trunnion 5 from the bearing opening in the win
dow frame to a position substantially flush with
the end i of the roller, whereupon this end of
the roller may be swung out and free of the
window frame.
The bung is assembled as a unit prior to its
being placed in the end of the roller 5 and con
sists of a stamping from sheet metal into the
cup-like form illustrated in
3, wherein the
end wall iii and the side wall 2!, which latter is
of a generally cylindrical form, are integral. The
end wall it is a separate plate, which after the
trunnion 5 and spring 56 are placed within the
cup 52, is inserted in the otherwise open end of
the bung i2 and is brought to bear against a
series of circumferentially spaced shoulders 22
pressed inwardly from the circular wall 2| of the
bung, as clearly shown in Figs. 1, 3 and 5.
In order to hold the end wall I l in position the
open end 23 of the side wall 2! of the bung I2 is
crimped inwardly at diametrically opposed plates,
as illustrated at 24, 24.
The side wall 2B of the bung i2 is concaved lon
gitudinally at diametrically opposite places pro
viding grooves 25, 25 which ?t around the seam 2
and curtain-receiving recessed groove 3, as clear
ly illustrated in Fig. 2.
In forming the grooves 25,
shoulders, 26, ‘26
are formed at the ends of the grooves adjacent
the end wall it) of the bung, these shoulders 26
hearing against the ends of the seam 2 and groove
rib 3 to prevent the bung from moving too far into
the roller l.
V
In order to prevent the bung from slipping out
of the end of the roller the side wall 2! of the
bung i2 is apertured as at 2i and the side wall
of the roller is perforated and pressed into‘ the
bung opening 27, as illustrated at 23 in Fig. 1,
60 thereby securing the bung against any and all
55
axial or rotary movement relative to the roller I.
I claim:
1. A shade roller having an axial opening and
a transverse opening a?ording communication be
tween the axial opening and the exterior of the
roller, a retractable trunnion mounted. in the
axial opening with one end projecting beyond an
adjacent end of the roller, and means on said
trunnion and wholly con?ned within said axial
70. opening and engageable by a tool insertable
through said transverse opening the side walls
of which‘afiord a pivotal bearing for said tool for
effecting retraction of the projecting end of the
trunnion.
2. A shade roller having an axial opening and
75
a transverse opening a?ording communication be
tween the axial opening and the exterior of the
roller, a trunnion slidably mounted in the axial
opening, and means on the trunnion and wholly
con?ned within said axial opening and engage 5
able by a tool insertable through said transverse
opening the side walls of which a?ord a pivotal
bearing for said tool for sliding the trunnion
axially of the roller.
3. A shade roller having an axial opening and
transverse opening aifording communication be
tween the axial opening and the exterior of the
roller, a trunnion slidably mounted in the axial
opening with one end projecting beyond an ad
jacent end of the roller, means for resiliently
maintaining the trunnion in said projecting rela
tion to the roller, and means on said trunnion and
wholly con?ned within said axial opening and en
gageable by a tool insertable through said trans
verse opening the side walls of which afford a 20
pivotal bearing for said tool for e?ecting retrac
tion of the projecting end of the trunnion.
4. A shade roller having an axial opening and a
transverse opening aifording communication be
tween the axial opening and the exterior of the -
roller, a trunnion slidably mounted in the axial
opening with one end projecting beyond an ad
jacent end of the roller, means for resiliently
maintaining the trunnion in said projecting rela
tion to the roller, and means wholly con?ned 30
within said axial opening and affording a trans
verse shoulder on said trunnion engageable by 'a
tool insertable through said transverse opening
the side walls of which afford a pivotal bearing for
said tool for effecting retraction of the projecting 35
end of the trunnion.
5. A hollow ended shade roller, a pair of trans
versely extending plates in and spaced longitudi
nally of the hollow end of the roller, a trunnion
operatively supported in said plates with one end 40
projecting beyond the end of the roller, said hol
low end of the roller having a transverse opening
a?ording communication between the interior and
the exterior of the roller, and means on the trun~
nion wholly con?ned within the hollow of the 45
roller and engageable by a tool insertable through
said opening the side walls of which afford a piv
otal bearing for said tool for retracting the pr0~
jected end of the trunnion.
6. A hollow ended shade roller, a preassembled 50
bung unit mounted in the hollow end of the
shade roller and comprising a cylindrical body
and a, pair of transverse plates spaced longitudi
nally thereof, a trunnion operatively supported
in said plates with one end projecting beyond the 55
end of the roller, said hollow end of the roller and
said cylindrical body of said bung unit having
aligned transverse openings a?ording communi
cation betweenthe interior of the bung and the
exterior of the roller, and means on the trunnion 60
intermediate said plates and wholly con?ned
within the bung unit and engageable by a tool in
sertable through said aligned transverse openings
the side walls of which afford a pivotal bearing.
for said tool for effecting retraction ‘of the 65
trunnion.
7. A hollow open ended shade roller comprising
a substantially cylindrical wall having a rib ex
tending longitudinally thereof, a preassembled'
bung unit comprising a cup-shaped element con 70
sisting of a substantially cylindrical body and an
integral bottom plate at one end thereof, a second
plate parallel to said bottom plate in spaced rela
tion thereto, said bung unitbeing mounted. invthe;
hollow end of the roller with the axes of the two
3,
2,106,078
substantially coinciding, a trunnion operatively
the side walls of which afford a pivotal bearing
mounted in said plates with one end projecting
beyond the end of the roller, said hollow end of
the roller and the cylindrical body of the bung
for said tool.
10. A bung unit comprising a cup-shaped ele
bung cup having a longitudinal groove receiving
ment including a substantially cylindrical body
wall and a transverse bottom plate integral there
with, a second plate parallel to and spaced from
the bottom plate, shoulders formed in and from
the body wall at opposite sides respectively of said
second plate securing the plate in place, a trun
nion slidably mounted in said plates, said body 10
wall having a transverse side opening inter
said rib and a shoulder formed at the end of
said groove adjacent said bottom plate and en
mediate said plates, and means on the trunnion
engageable by a tool insertable through said side
unit having aligned transversely extending open
ings a?ording communication between the interior
of the bung unit and the exterior of the roller, and
means on the trunnion engageable by a tool in
sertable through said aligned openings for re
10 tracting the trunnion, the cylindrical body of said
gaging the end of said rib to position the bung
opening for sliding the trunnion axially of the
unit in the open end of the roller.
8. A hollow ended shade roller having a trans
bung unit.
verse opening therein, a pair of transverse plates
spaced longitudinally of the roller, a trunnion
slidably mounted in said plates with one end pro
jected beyond the end of the roller, a spring en
circling the trunnion intermediate the plates for
projecting the trunnion outwardly of the roller,
and means in the trunnion intermediate one end
of said second plate securing the plate’in place,
a trunnion slidably mounted in said plates, a
of the spring and the outermost of said plates
spring encircling the trunnion intermediate said
a?ording an abutment for the spring, a stop for
the trunnion Wholly con?ned within the hollow
of the roller and engageable with said outermost
plate and a shoulder wholly con?ned within the
hollow of the roller and engageable by a retract
ing tool insertable through said transversely ex
side opening for sliding the trunnion axially of '
tending opening which is formed in the roller
intermediate said plates the side walls of which
afford a pivotal bearing for said tool.
9. A hollow ended shade roller, a pair of trans
verse plates spaced longitudinally of the roller,
a trunnion slidably mounted in said plates with -
one end projected beyond the end of the roller,
a spring encircling the trunnion intermediate the
plates for projecting the trunnion outwardly of
the roller, and a circumferentially grooved collar
on the trunnion intermediate one end of the
spring and the outermost of said plates wholly
J
,
11. A bung unit comprising a cup-shaped ele
ment including a substantially cylindrical body
Wall and a transverse bottom plate integral
therewith, a second plate parallel to and spaced
from the bottom plate, shoulders formed in and
from the body wall at opposite sides respectively
con?ned within the hollow of the roller and af
fording an abutment for the spring, a stop for the
in trunnion wholly con?ned within the hollow of the
roller and engageable with said outermost plate
and a shoulder wholly con?ned within the hollow
of the roller and engageable by a retracting tool
insertable through a transversely extending open
ing formed in the roller intermediate said plates
plates, said body wall having a transverse side
opening intermediate said plates, and means on
the trunnion intermediate the spring and one of
said plates a?ording an abutment for the spring
and engageable by a tool insertable through said
the bung unit against the action of the spring.
12. A bung unit comprising a cup-shaped ele
ment including a substantially cylindrical body
wall and a transverse bottom plate integral there
with, a second plate parallel to and spaced from
the bottom plate, shoulders formed in and from
the body wall at opposite sides respectively of
said second plate securing the plate in place, a
trunnion slidably mounted in said plate, a spring
encircling the trunnion intermediate said plates,
said body wall having a transverse side opening
intermediate said plates, a circumferentially
grooved collar on the trunnion intermediate the
spring and one of said plates affording an abut
ment for the spring, and a limit stop for the trun
nion for engaging the second of said plates and
engageable by a tool insertable through said side
opening for. sliding the trunnion axially of the
bung unit against the action of the spring.
WALTER J. STUBER.
50
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