close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3092182

код для вставки
June 4, 1963
J. A. ANDERSON
3,092, 1 72
PULLEY HANGER
Filed Aug 7, 1961
3 Sheets-Sheet l
,5 +6’. _!
.5
l
INVENTOR.
Wimp»
BY
U
17755117”?
June 4, 1963
J. A. ANDERSON
3,092,172
PULLEY HANGER
INVENTOR.
@W
BY
June 4, 1963
3,092,172
J. A. ANDERSON
PULLEY HANGER
Filed Aug. 7, 1961
3 Sheets-Sheet 5
’—
703 I’:
'IIIIIIIIIIII
Q9094
25
Ill/I12
107
9/ 1/0 95
INVENTOR.
M4 M7»
BY
ice
Uted States
1
3,092,172
?atented June 4, 1963
2
Another feature of the invention resides in the manner
3,092,172
in which the lock dog is mounted in its supporting struc
James A. Anderson, Muskegon, Mich, assignor to Brena
man-Hartshorn, Inca, Cincinnati, Ghio, a corporation of
ture ‘as well as the cooperating shape of the supporting
structure to facilitate assembly.
These and other features of the invention will become
Filed Aug. 7, 1961, Ser. No. 129,635
6 Claims. ((11. 160-—133)
more readily apparent from the following detailed de
PULLEY HANGER
Ohio
scription taken in conjunction with the accompanying
drawings in which:
This invention relates to a pulley hanger and is more
FIG. 1 is an elevational View of a slat blind to which
particularly directed to a hanger for use with a slat blind 10 pulley hangers of the present invention are mounted;
porch shade, although certain of the novel features are not
FIG. 2 is a front elevational view of a single pulley
necessarily limited in their application to slat porch shades.
hanger;
The slat blinds with which the invention is principally
FIG. 3 is a front elevational view of a double pulley
employed are of the type having a number of vertically
hanger;
aligned horizontal slats interwoven and connected together 15
FIG. 4 is a side elevational view of a single pulley
by string. A head bar is secured to the uppermost slat
hanger;
and provides a hanging support for the blind. A single
FIG. 5 is a side elevational View of a double pulley
pulley mounted at one end of the head board and a double
pulley having a cord lock dog mounted in the other end
hanger;
FIG. 6 is a top plan view partly in section taken along
of the head bar cooperate with a draw cord which passes 20 lines 6-6 of FIG. 1;
‘through both pulleys and around the complete blind at
FIG. 7 is a cross sectional View taken along lines 7—7
both sides of the blind. Pulling on the cord shortens the
of FIG. 4;
loops around the blind at each side and causes the blind
FIG. 8 is a cross sectional view taken along lines 8—8
to roll up from its bottom edge.
of FIG. 5;
The hanger pulley of the present invention combines the 25
FIG. 9 is a cross sectional view taken along lines 9-9
functions of a pulley to be mounted to the head bar and
of FIG. 8;
a hanger for the complete assembly. As such it is desir
FIG. 10 is a ‘cross sectional view taken along lines 10able that the hanger pulley be easy to apply to the slat
10 of FIG. 8; and
blind and easy to accommodate to the supporting structure
FIG. 11 is a cross sectional view taken along line 11—
to which the slat blind is to be mounted. Further, it is
11 of FIG. 8.
desirable that the device be provided with means for pre
Referring to FIG. 1, a slat blind it} is shown as formed
venting, insofar as possible, the fouling of the draw cord.
Still further, the device should be of ruggedest construc
with a plurality of slats 11 which are in vertical align
ment and are interconnected together by being woven
with respect to strings 1-2. The uppermost slat 13 is
regularity of the cord drawing and locking functions to 35 folded over on the adjacent slat 14 (FIGS. 4-6) the two
the end that minimal ingenuity is required to adjust the
slats being secured to a head bar 15 which forms the
blind to the proper ‘level.
top of the slat blind. The slats are secured to the head
An important feature of the invention resides in the ease
bar by wire staples 16 as illustrated in FIG. 6. At the
with which the hanger pulley can be applied to a slat blind
left side of the slat blind is a single pulley hanger 20 and
with provision for wide variation in the longitudinal posi 40 at the right side of the slat blind is a double pulley hanger
tion along the head bar to which the hanger pulley is
21. A cord 22 passes over the pulleys and is secured at
ailixed. More speci?cally, it has been an objective of the
its ends in such a manner as to form a loop 23 around
invention to provide for the securing of the pulley to the
the left side of the slat blind, a loop 24 around the right
side of the slat blind and a loop 25 which hangs free
slat blind head bar by sliding an upwardly projecting plate
between the head bar and an overlying slat and wrapping 45 for the manual raising and lowering of the blind. The
free ends 26 and 27 of the cord 22 are knotted as at ‘28
a free end of the draw cord about that portion of the plate
tion with its parts so related and oriented as to assure
and are wrapped about the respective projecting ends of
which projects above the head bar.
Another objective of the invention has been to provide
a slot of a particular shape formed in opposed side edges
the pulley hangers 2i} and 21 in a manner to be described
below in order to secure the pulley hangers to the slat
‘of the upwardly projecting plate, the shape of the slot
blind. The cord is oriented with respect to the slat blind
being such as to facilitate the application of the cord to
the plate and to impede its inadvertent removal. The in
vention provides a cooperative relation between the slots
and the respective hanger pulleys as follows:
Beginning with the ?xed end 27 at the right side of
the blind, the cord passes behind the slat blind to the
bottom thereof and upwardly in front of the slat blind
and the con?guration of the hanger which locks the hanger
against twisting or “toeing in” when tension is applied to 55 to form the loop 24. The cord passes over the outer
the cord.
Another feature of the invention resides in the anti
fouling guide means particularly associated with the dou
groove of the double pulley and back over the inner
groove to drawing loop 25. The cord then passes over
the pulley on the hanger 29, downwardly in front of the
slat blind ‘and up in back of the slat blind to form the
cord from twisting or riding over onto the wrong pulley 60 loop 23, the remaining end '26 being ?xed to the hanger
20.
groove, while at the same time permitting ease of assem
ble pulley hanger, the guide means preventing the draw
bly. The guide means are especially adapted for guiding
‘the draw cord from both sides of the pulley so that pro
tection against fouling is provided during both raising and
The hanger pulley 20 has a hanger plate 30 (FIGS.
2, 4, 6 and 7) which has a key hole aperture 31 adapted
to admit a headed fastener such as a screw or nail through
65 an enlarged portion 32 and to secure the hanger plate
lowering of the shade.
to the fastener in the narrower portion 33. The hanger
Another objective of the invention has been to provide
plate
30 has notches 34 in each vertical edge thereof, the
a guide ramp for that loop of the draw cord which is
notches being positioned immediately adjacent the upper
manually operated to raise and lower the blind, the ramp
surface of the head bar when the hanger is in its operative
reducing the fraying of the cord and providing assurance 70 position. The construction of the notch is such that a
against the inadvertent release of the engagement of the
?at edge 35 lies parallel to the surface'of the head board,
lock dog with the cord.
the other side of the slot being ‘formed by a V-shaped
3,092,172
4
removal of the cord from the notches during operation;
The lower portion of the hanger plate is horizontally
plate has a vertical ?ange 85 which extends between the
two legs of the pulley frame and provides a surface
against which the lock dog 80 can force the cord por
tions of loop 25 to lock the cord in position thus ?xing
the elevated portion of the blind. VA tab 86 on a leg
87 of the pulley frame overlies the edge 88 of the tab 86
where it butts against the leg 87 to secure the ?ange
embossed or recessed as at 40 to provide a shoulder 41
against bending outwardly under the repeated stress of
surface 36. The function of the notches 34 is to receive
the end 26 of the cord as it is wrapped about the hanger
in order to secure the hanger to the head board. The
' shape of the notches facilitates the introduction of the
cord into the notches but serves'to prevent the inadvertent
the locking of the cord against its surface. The ?ange
against ‘which the headbar 15 bears. A second shoulder
42 of smaller dimension than the shoulder 41 is also 10 85 has a dimple 89 which prevents the lock dog 80 from
swinging about its pivotal axis to an inoperative posi
formed by the recess 40 to receive a pulley frame 43‘.
tion. This dimple assumes its greatest importance dur
Because the shoulder 42 is of smaller dimension than
ing the assembly of the device to be described below.
shoulder 41 the inner leg 44 of the'pulley frame is, when
* To facilitate the regularity and surety of operation, the
in position, substantially ?ush vwith the surface of the
hanger plate 30. The pulley frame 43 is U-shaped and 15 lower edge of the ?ange 85 is depressed inwardly as at'
ramp 90 to help center the cord 22 and push it against
has the leg 44 referred to above and a leg 45. The legs
the lock dog 80.
p
44 and ‘45 are apertured as at 46 and 47 and the lower
The bight portion 91 of the pulley frame is slotted as
end of the hanger plate 30 is apertured as at 48. A
at 92 and 93 to provide apertures through which the
rivet 49 forming the axle shaft of a single grooved sheave
respective cord portions of the loop 25 passes. The two
or pulley 50 passes through the apertures 46, 47 and 48,
slots leave a divider 94 which, together with guide means
through a bore 51 through the center of the pulley to
which will be described below, prevent the undesirable
secure the pulley frame to the hanger plate 30, and to
twisting of the cord on the double groovedsheave. The
form an axle about which the sheave 50 may rotate. It
portion of slot 92 nearest the locking dog is of a de
can be seen from FIG. 4 that the axle shaft 49 locks all
but pivotal movement of the pulley support 43 with re 25 creased width. The decrease in width tends to retard
the movement of the outer cord portion passing there
spect to the hanger plate 30 and rotary movement is
blocked by the engagement of the shoulder 42 with the
through as both cord portions are moved toward the
corresponding surface on leg 44- of the pulley frame.
locking dog. This retardation overcomes the natural
a When in position on the porch shade the upper edge
of leg 45 engages the headbar 15 and con?nes the cord
on the sheave 50. Prior to ?xing the pulley hanger on
vthe headbar, however, the cord can merely be laid on
tendency of the outer cord portion to lead, and thereby
effects a more uniform or simultaneous engagement of
the two cord portions with the locking dog. Further,
the shape of groove 02 guides the cord toward the center
the sheave 50 rather than threaded into position.
of the area of engagement with the dog where the dog
The double pulley hanger is similarly constructed. As
more e?ectively can perform its locking'function.
shown in FIG. 3, the double pulley hanger 21 has a 35
The guide means for the cord is best illustrated in
hanger plate 60 provided with a keyhole aperture 31 hav
FIG. 5. The outside leg 87 of the pulley frame has an
ing an enlarged portion 3-2 and narrow portion 33.
upwardly projecting ?ange 100 which is offset inwardly
Notches 34 are provided in the side edges, the notches
so that the lower portion of the ?ange is in engagement
34 being formed by a straight edge 35 and a V-shaped
with the rim 101 of the sheave 70. The ?ange 100
projection 36 all as described above in connection with 40 serves in part to center the sheave but more particularly
to prevent the cord 22 from riding over the rim and off
As best shown in'FlG. 5, the hanger plate 60 has a
the sheave. The recess or embossment 61 described
the single pulley 20..
transverse embossment or recess 61 providing a shoulder
above performs the same function for the other side of 7
62 which bears against the headbar 15 and provides,
along with the similar construction of the single pulley,
the sheave.
a support for the slat blind. The recess 61 also provides
a shoulder 63 of smaller dimension than the shoulder
62 which is in engagement with a similarly shouldered
portion 64 on a leg 65 of a generally U-shaped pulley
frame 66. The hanger plate 60 has a lower end portion
'
. A second ?ange 102 projects inwardly and upwardly
from outside leg 87 of the pulley frame. That ?ange
serves to con?ne an inside run 103 of the cord to the
inside groove 104 and cooperates with the embossment
61 to keep the run from riding over the rim of the sheave.
A lower portion 105 of the ?ange 102 which presents a
67 which extends along almost the complete length of 50 surface which is co-planar with the surface of the flange‘
the leg 65 thereby providing a double thickness of mate
100 and provides a guide surface for an outside run 106
rial which bolsters the pulley against twisting and bend
of the cord 22., That ?ange portion 105 cooperates with
ing during its use.
a guide ?ange 107 ‘projecting from the leg 65 of the
A double grooved sheave 70 is mounted on an axle
pulley frame to guide the outside run of the cord and
shaft -71 (FIG. ‘9) constructed by a shouldered semi 55 to prevent it from riding over the rim of its groove and
tubular rivet passing through apertures 72 and 73 in the
twisting with respect to the inside run. The ?ange 107 is
legs of the pulley frame and an aperture 74 in the lower
integral with a bracket 108 having an inclined upper sur
end of the ‘hanger plate 60.‘ Both types of pulleys, of
face 109. The inclined surface together with the pres
course, can be constructed of a single piece for the hanger
sure exerted on the outside run .106 by the weight of the
plate and pulley frame. However, the illustrated two
slat blind roll always urges the outside run 106 toward
piece construction is preferred because of the extra
its proper outside groove and augments the guide ?anges
strength provided by the double thickness at the joint
described above in maintaining the respective cord runs‘
between the two pieces. As in the case of the single pul
on their respective grooves and to prevent twisting of
ley hanger 20 the pulley frame is tightly secured to the
the cord runs.
hanger plate 60 by the axle shaft 71 and the cooperation 65
The upper edge of ?ange 102 in engagement with
of the engaged shoulders 63 and 64 of the hanger plate
headbarlS con?nes the inner run of the cord on the
and pulley frame respectively. 7
sheave groove. However, as in the case of the single
Below the apertures 72, 73 and 74 are similar aper
groove pulley, the cord can 'be applied merely by laying’
tures 75, 76 in the pulley frame and>77 in the hanger
it over the sheave before the hanger is in position.
plate which receive a lock dog 80 having cars 81 and 82 70
The locking dog 80 is best illustrated in FIGS. 8 and
projecting therefrom. The ear 81 projects beyond the
9. It is a U-shaped piece having the ears 81 and 82
surface of the pulley frame so that it is engageable by
described above. The dog has a bight portion 110
the assembler’ to facilitate in the assembly of the device
having a projecting ?ange 111 which is formed with a‘
as described below.
saw tooth edge 112 as shown in hidden lines in FIG..9.
' As best illustrated in FIGS. 8 and 10, the pulley hanger 75 The saw tooth edge bites into the ?bers of the cord so
3,092,172
6
5
that during locking slippage of the cord in a counter
clockwise direction as viewed in FIG. 8 is prevented.
The dimensions of the lock dog should be related to the
pulley frame so that in locking the cord is forced against
the inner surface of the ?ange 85 and thereby clamped
between that surface and the teeth of the lock dog.
The lock dog has a rearwardly projecting abutment 113
which is engageable with a shoulder 114 formed by the
from the slots 34 withdrawing the hanger plates from
between the headbar and adjacent slat and respositioning
the hanger plates in the desired location. Precise posi
tioning is not required for even when in the condition
illustrated in FIG. 1, the plates are slidable an inch or
so in either direction as permitted by the location of the
staples 15.
After the screws are mounted in the ‘supporting struc~
ture, the slat blind is positioned on the supporting struc
guide ?ange portion 105. The engagement of the abut~
ment 113 with the shoulder 114 limits the clockwise piv 10 ture by passing the keyhole apertures 31 over the heads
oting of the lock dog (as viewed in FIG. 8) so that the
teeth of the lock dog will always overlie a portion of
the slots 92 and 93 and be engageable with the cord.
of the screws and permitting the slat blind to drop to
lodge the screw shanks in the narrow portions 33 of the
In assembling the invention, particularly the double
grooved pulley 21 (similar considerations obtain for the
In pulling on loop 25 to raise the blind, and in releas
ing the dog 86 and raising the cord loop 25 to lower
the blind, the guiding members described above maintain
the cords in proper operative orientation. Even in the
keyhole slots.
single grooved pulley), the parts are ?rst formed as
shown in the drawings, that is, as they will be in their
?rst operation, the guiding members will have kept the
assembled condition, except for the pulley frame. In the
cords in proper orientation so that there is no require
formation of the pulley frame 66 the walls 65 and 87
have about a 12° spread with respect to each other. 20 ment for readjustment of the cords after the blind is
received from the manufacturer in order to render the
That spread, ?rst, permits the unit to be stripped from
slat blind operative.
the stamping die. Second, in assembly it permits the
The ramp 90 serves two functions in the operation of
hanger plate with its ?ange 85 to be inserted into the
the invention. It is seen that from FIG. 11 that the ramp
assembled position with respect to the pulley frame.
Further, it permits the frame to receive the lock dog 25 90 overlies the cord slots 92 and 93. In pulling down
on the cord the ramp 96 provides a smooth ramp guiding
with its projecting ears 81 and 82 projecting through
the cords through the cord slots 92 and 93 thereby pre
their associated apertures. When the hanger plate,
venting fraying of the cord. Further, from time to time,
pulley frame and lock dog are assembled, then the pul
a person will lift the rolled bundle of blind slats remov
ley and its axle shaft forming rivet 71 are properly po
ing the tension from the cord loop 24. Under this con
sitioned with the rivet 71 passing through the apertures
dition there may be greater weight on cord loop 25 which
72, 73 and 74. The walls 65 and 87 are forced to
would tend to free the lock dog from its engagement with
gether into substantial parallelism and the rivet peened
the cord so that when the bundle is released the blind
over to complete the assembly of the hanger. When the
would go plunging to the ?oor. The ramp 99 tends to
walls 65 and 87 are forced together the ?ange or lock
urge the cord toward the lock dog under such conditions
wall 85 prevents the walls from being forced beyond a
and eliminates the possibility of inadvertent release of
condition of parallelism.
the lock dog. Release of the lock dog can be effected,
In threading the cord into the pulley frame and around
then, only when the cord is pulled by the operator.
the pulley, it is important for rapid assembly operation
I claim:
that the lock dog be maintained in its proper position out
1. A hanger pulley comprising an upper plate, a U
of interference with the cord. If the lock dog swings 40
shaped frame having a pair of spaced vertical legs at
counterclockwise as viewed in FIG. 8 to an extreme up
the lower end of said plate, a double grooved sheave ro
ward position against the pulley, the assembler will be
required to take an emra step to shake the lock dog down
into the proper position. Also, as the cord is being
threaded through the frame the threading ‘operation will
be greatly impeded by the cord snagging on the teeth of
the lock dog. To obviate these obstacles to rapid as
sembly, two structural measures are taken.
First, the
tatably mounted in said frame to receive two runs of a
cord, the outer run making a 180° turn about said sheave
and the inner run making a 90° turn about said sheave,
guide ?anges projecting laterally from each said vertical
leg to con?ne said outer run to its groove and a guide
?ange projecting upwardly a substantial distance above
said sheave and centrally of said sheave and on the side
sures the maintainence of the lock dog in the proper low 50 of said sheave from which the inner run leaves the top
of said sheave to cooperate with said frame in con?ning
er position. Second, the lock dog ear 81 projects out
said inner run to its groove.
side of the pulley frame so that it is actuable by the as
2. A hanger pulley comprising, an upper plate, a U
sembler. By manipulating the ear 81 with this thumb
shaped frame having a pair of spaced vertical legs at
the assembler can swing the lock dog to a rearward posi
tion and hold it in that position until the cord threading 55 the lower end portion of said plate, a double grooved
sheave rotatably mounted in said frame to receive two
operation is completed.
dimple 89 is provided in ?ange 85. The dimple 89‘ as
runs of a cord, the outer run making a 180° turn about
In operation the home ‘owner will normally purchase
said sheave and the inner run making 'a 90° turn about
a. completely assembled slat blind having the pulley
said sheave, guide ?anges projecting laterally from each
hangers properly inserted between the headbar 15 and
said vertical leg to con?ne said ‘outer run to its groove,
the adjacent slat 14 with the cord ends wrapped about
the hanger plates 30 and 60. As indicated above, the 60 the guide ?anges projecting from the inner leg of said
frame being formed by a bracket having a downwardly
cord ends are quickly assembled in this position by knot
and centrally inclined surface terminating in a guide
ting the ends as at 28, and wrapping about the hanger
?ange, said downwardly inclined surface urging said
plates in the slots 34. As appears from FIG. 4 for
outer cord run onto its respective groove, and a guide
example, when the cord is properly positioned in slots
?ange projecting upwardly and centrally of said sheave
34, the cord forms two bearing locations for the hanger
to cooperate with said frame in con?ning said inner run
against the upper surface of the headbar 15. Similarly,
to its groove.
the lower surface of the headbar is engaged by the shoul
3. A cord pulley hanger in combination with a slat
der 41 or 62 ‘of the two types of pulleys respectivel .
blind porch shade having a head bar and an upper slat
The combination tends to form a clamp on the headbar 70 secured to the surface of said head bar, said hanger com
to prevent the twisting or toeing in of the pulleys.
prising a plate portion inserted between said head bar
The particular structure to which the slat blind is to
and slat, a slot on each longitudinal edge of said plate
be mounted may not lend itself to the manufacturer’s
positioning of the hanger pulleys.
That position can
immediately above said head bar, said slots receiving
a cord thereby blocking said hanger from dropping from
easily be changed merely by removing the cord ends 75 between said head bar and upper slat.
3,092,172
7
a 4. A cord pulley hanger in combination vwith ‘a slat
S
.
an'upper slat secured, to the surface of said head 'bar
inserted between said slat and said head bar, a hanger
pulley comprising an upper plate, ‘a U-shaped frame hav
ing‘ a pair ‘of spaced vertical legs at the lower end of
blind porch shade having a head'bar and an upper slat
secured to the surface of said head bar, said hanger com
prising a plate portion inserted between said head bar and
slat, a slot on each longitudinal edge of said plate im 5 said plate, ‘a double grooved sheave rotatably' mounted in
mediately 'above said head bar and receiving a cord to
said frame to receive two runs of a cord, the outer run
secure said hanger on said head bar, said slots being
making a 180° turn about said sheave and the inner run
formed by a straight lower edge normally parallel to
making a 90° turn vabout said sheave, guide ?anges pro
said hear barland "a U-shaped re-entrant upper edge,
jecting laterally from each said vertical'leg to con?ne
whereby .to facilitate ‘application of a cord into said slot 10 said iouter run to its groove ‘and a guide ?ange projecting
and to impede inadvertent removal ‘of said cord from said
upwardly a substantial distance above said sheave and
slot.
terminating adjacent said head bar, said ?ange being 7
5. A cord pulley hanger in combination with a slat
located centrally of said sheave and on the side of said
blind porch shade having a head bar and ‘an upper slat
sheave from which the inner run leaves the top of said
secured to the surface of said head bar, said hanger com 15 sheave to cooperate with said frame‘and head bar‘ in
prising a plate inserted between said head bar and slat,
con?ning said inner run to itsggroove.
a shoulder on said plate in engagement with the lower
surface of said head bar when said plate is inserted in
'References Cited in’ the ?le of this patent
operable position, a slot on each longitudinal edge of said
UNITED STATES PATENTS
plate immediately above said head bar, said slots snugly
receiving a cord thereby con?ning said head bar between
said cord and hanger.
'
6. In a slat blind porch shade having a head, bar and
20, 2,207,516
2,246,229
La Ganke _____________ __ July 9, 1940'
Wohlmuth '_ _______ _.'____ June 17, 1941
2,631,661
Nelson _______ __' _____ __ Mar. 17, 19537
Документ
Категория
Без категории
Просмотров
0
Размер файла
813 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа