US3221802A - Locking device for lift cords of a venetian blind - Google Patents

Locking device for lift cords of a venetian blind Download PDF

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Publication number
US3221802A
US3221802A US119417A US11941761A US3221802A US 3221802 A US3221802 A US 3221802A US 119417 A US119417 A US 119417A US 11941761 A US11941761 A US 11941761A US 3221802 A US3221802 A US 3221802A
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US
United States
Prior art keywords
locking member
housing
locking
side walls
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US119417A
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English (en)
Inventor
Hurkmans Jozefus Cornelis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunter Douglas International Quebec Ltd
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Hunter Douglas International Quebec Ltd
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Filing date
Publication date
Application filed by Hunter Douglas International Quebec Ltd filed Critical Hunter Douglas International Quebec Ltd
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Publication of US3221802A publication Critical patent/US3221802A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/324—Cord-locks

Definitions

  • FIG.1 LOCKING DEVICE FOR LIFT CORDS OF A VENETIAN BLIND Filed June 26, 1961 2 Sheets-Sheet 1 FIG.1 FIG.2
  • This invention relates to a locking device for lift means, such as for example lift cords and lift tapes of a Venetian blind, a curtain or the like, said locking device comprising a housing, at least one pivotal locking member for the cords and at least one guiding roller for the lift means, the locking member co-operating with a wall of U-shape and having a slot in the portion connecting the legs of a U and aims at providing a locking device of this type with which the lift cords may always be firmly and safely locked.
  • the locking member comprises at least along one of the slot edges a lip pointing towards the wall with which the locking member co-operates.
  • This lip has only a narrow head rim so that consequently locally a great force may be exercised on the lift cords or lift tapes.
  • the or each lip may be bent out of the material of the locking member which material must be punched out for forming the slot in the locking member.
  • the or each lip may cooperate with a stationary wall as well as with a movable wall.
  • said stationary wall is, according to the invention, preferably so constructed that it extends only along a part of the path of the locking member which lies below the path followed by the portion of the locking member located above the slot.
  • the wall or walls co-operating with the locking member may be formed by partitions provided in the housing of the locking device as well as by a side wall or the side walls of the housing itself. In the latter case it is preferred to provide in this side wall or in these side walls a recess allowing the portion of the locking member located above the slot to pass therethrough.
  • this wall pivotally about the shaft fixed in the housing.
  • This movable wall may be formed by the wall connecting the legs of the U-shaped clip.
  • This clip may be simply and cheaply manufactured from' sheet metal.
  • a preferred embodiment of the locking device according to the invention is characterized in that one or more abutments are provided for defining the final position or final positions of the movable wall. These abutments may consist of lips punched out of the wall of the housing.
  • the housing of the locking device according to the invention may be U-shaped in cross-section. Consequently this may be very cheap to manufacture.
  • the locking member and the movable wall may be pivotally mounted on a shaft fixed in the housing, said shaft being located at such distance from the shaft of the or each guiding roller that in both extreme positions of the locking device and the movable wall, said locking member and said movable wall cannot get between the guiding roller and the walls of the housing.
  • FIG. 1 shows a longitudinal section of this embodiment in which the parts thereof are in the position in which the lift means are not locked.
  • FIG. 2 is a side view of this embodiment.
  • FIG. 3 shows a longitudinal section of this embodiment in which the parts thereof are in the locking position.
  • FIG. 4 shows a longitudinal section of the second embodiment in which the locking member is in the inoperative position.
  • FIG. 5 is a section on the line VV of FIG. 4.
  • FIG. 6 shows a longitudinal section of the second embodiment in which the locking member is in the operative position.
  • the locking device shown in the drawings comprises a housing of U-shaped cross-section, of which the legs form the front wall 1 and the rear wall 2. respectively, whilst the portion connecting the legs 1 and 2 forms the bottom 3.
  • the bottom 3 has a hole 4 which is provided round about with a collar 5 fitting in a hole in the bottom of a head rail (not shown) of a Venetian blind.
  • the front wall and the rear wall of the housing are provided with lips 6 which are in engagement with the bent edges of such a head rail. As a consequence thereof it is easy to mount the locking device firmly in place in such a head rail.
  • a guiding roller 7 for the lift cords 8 coming from the Venetian blind are passed through a hole 4 in the bottom 3 of the housing.
  • the guiding roller 7 is freely rotatable about a shaft 9 which is secured with its ends in the front wall and the rear wall of the housing.
  • the roller 7 is of such length that the lateral faces thereof are substantially in contact with said front wall and rear wall. Consequently there is no risk of the lift cords 8 getting between the lateral faces of the roller 7 and the front wall 1 and the rear wall 2 of the housing and at the same time this offers the possibility of guiding a large number of lift cords over this roller.
  • a shaft 10 arranged in said housing below the shaft 9 a locking member 11 and a movable wall 12 cooperating therewith.
  • the shafts 9 and 10 hold the walls of the housing 1 and 2 firmly together so that no other means are required to obtain a firm unit. Consequently the side walls of the housing may be omitted.
  • the locking member 11 consists of a U-shaped clip of which the connecting portion between the legs has a slot 13 allowing the lift cord 8 to be passed therethrough.
  • these lift cords extend past the edge 14 of the movable wall 12 which is slightly bent in order not to form a sharp edge which might damage the lift cords.
  • the locking member 11 has at two opposite edges of the slot 13 lips 16 pointing towards the movable Wall 12. These lips 16 clamp the lift cord 8 firmly against the movable wall 12 which is slightly bent in order not the position shown in FIG. 3.
  • the movable wall 12 is formed by the connecting portion of a U-shaped clip.
  • the housing further comprises two abutments 17, 18 bent out of the housing walls 1 and 2, said abutments defining the final positions of the movable wall 12.
  • cords 8 When the Venetian blind has reached the desired position the cords 8 are released. These cords take along the locking member 11 and the movable wall 12 until said movable wall reaches the abutment 18 and cannot be pivoted farther upwards. The lift cords 8 take the locking member 1 1 farther along until the locking position shown in FIG. 3 is reached.
  • FIGS. 4-6 show an embodiment in which the lips 16 cooperate with the side walls 19, 20 of the housing. Those parts of this embodiment of the locking device which correspond with the parts of the locking device according to FIGS. 1-3 are designated by the same reference numerals.
  • FIGS. 4-6 mainly opcrates in the same way as the embodiment according to FIGS. 1-3. The only difference is that in the case of the embodiment according to FIGS. 4-6 the lift cords 8 are pressed by a lip 16 against the stationary wall of the housing 20 instead of against the movable wall 12.
  • the above-described locking device may also be so constructed that thereby only lift means always coming from one and the same direction may be locked. In that case it is only necessary for the housing to have one side wall and the locking member 11 need only have one lip. In the locking device according to FIGS. 1-3 the movable wall may then be smaller. Furthermore various modifications may be made without departing from the scope of the invention.
  • two or more locking members and/ or two or more guiding rollers may be accommodated in the housing.
  • a locking device for use with the lift means of a Venetian blind and the like for releasably locking at least one tensioned lift means, comprising in combination, a housing having a pair of spaced side walls and at least one end wall extending between and fixed to said side walls, at least one guide roller between and carried by said side Walls, said guide roller having an axis substantially perpendicular to said side walls, and at least one locking member between and carried by said side walls for free turning movement around an axis directly beneath the axis of said guide roller, said locking member being U-shaped and having a web portion connecting the ends of its legs, said web portion being provided with a slot adapted to receive the lift means, at least one edge of said slot being provided with a lip pointing towards said end wall of the housing with which said locking means cooperates, said end wall of the housing being provided with an opening located to allow the portion of the locking member located above its slot to pass therethrough, whereby to clamp the lift means between the edge of the slot and the portion of the end wall subjacent said
  • a device adapted to be used in Venetian blinds and the like, for releasably locking at least one tensioned cord, comprising, in combination, a supporting bracket having a pair of spaced side walls and at least one end wall extending between and fixed to said side walls, an elongated guide extending between and carried by said side walls, said guide having an axis substantially perpendicular to said walls, and a locking member located between and carried by said side walls for free turning movement around an axis located directly beneath the axis of said guide, said locking member having distant from its turning axis a web portion formed with a slot adapted for passing the tensioned cord therethrough, at least one edge of said slot being provided with a lip pointing towards said end wall, and said locking member assuming a locking position with said member being turned upwardly from its lowermost position through an angle substantially less than and in said position said member having its lip located close enough to said end wall of the bracket to grip between said lip and said end wall at least one cord which passes through the slot of the locking

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
US119417A 1960-07-04 1961-06-26 Locking device for lift cords of a venetian blind Expired - Lifetime US3221802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL253395 1960-07-04

Publications (1)

Publication Number Publication Date
US3221802A true US3221802A (en) 1965-12-07

Family

ID=19752448

Family Applications (1)

Application Number Title Priority Date Filing Date
US119417A Expired - Lifetime US3221802A (en) 1960-07-04 1961-06-26 Locking device for lift cords of a venetian blind

Country Status (5)

Country Link
US (1) US3221802A (de)
AT (1) AT245779B (de)
BE (1) BE605432A (de)
CH (1) CH388558A (de)
GB (1) GB952503A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002715A1 (en) * 1979-05-30 1980-12-11 Hunter Douglas International A cord lock for a venetian blind lift cord
US4413664A (en) * 1981-07-09 1983-11-08 Verosol B.V. Cord-locking device
US4646808A (en) * 1985-02-27 1987-03-03 Hunter Douglas, Inc. Cordlock structure for a blind assembly
US4660612A (en) * 1985-02-27 1987-04-28 Hunter Douglas, Inc. Cordlock structure for a blind assembly having improved locking means
US4945970A (en) * 1989-06-28 1990-08-07 Norbert Marocco Cord lock unit for drape or blind assembly
US5472036A (en) * 1992-03-18 1995-12-05 Judkins; Ren Cord lock and release system for blinds
US20040226666A1 (en) * 2003-05-15 2004-11-18 Tyner James D. Cord lock
US20050056384A1 (en) * 2003-09-02 2005-03-17 Hunter Douglas Industries Bv Automatically activated cord lock

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US764047A (en) * 1903-03-17 1904-07-05 George Frederick French Cord guiding and gripping device for venetian blinds.
US2115623A (en) * 1936-02-17 1938-04-26 Tepla Anne De Rope holder
US2175977A (en) * 1938-01-27 1939-10-10 Mcfall Co Carey Cord-locking mechanism for venetian blinds
US2516969A (en) * 1945-12-12 1950-08-01 Theodore V Fettig Cable quide and clamp
US3040403A (en) * 1959-08-27 1962-06-26 Vista G M B H Releasable lock for venetian blinds and the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US764047A (en) * 1903-03-17 1904-07-05 George Frederick French Cord guiding and gripping device for venetian blinds.
US2115623A (en) * 1936-02-17 1938-04-26 Tepla Anne De Rope holder
US2175977A (en) * 1938-01-27 1939-10-10 Mcfall Co Carey Cord-locking mechanism for venetian blinds
US2516969A (en) * 1945-12-12 1950-08-01 Theodore V Fettig Cable quide and clamp
US3040403A (en) * 1959-08-27 1962-06-26 Vista G M B H Releasable lock for venetian blinds and the like

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002715A1 (en) * 1979-05-30 1980-12-11 Hunter Douglas International A cord lock for a venetian blind lift cord
US4245688A (en) * 1979-05-30 1981-01-20 Hunter Douglas International N.V. Cord lock for a venetian blind lift cord
US4413664A (en) * 1981-07-09 1983-11-08 Verosol B.V. Cord-locking device
US4646808A (en) * 1985-02-27 1987-03-03 Hunter Douglas, Inc. Cordlock structure for a blind assembly
US4660612A (en) * 1985-02-27 1987-04-28 Hunter Douglas, Inc. Cordlock structure for a blind assembly having improved locking means
US4945970A (en) * 1989-06-28 1990-08-07 Norbert Marocco Cord lock unit for drape or blind assembly
US5472036A (en) * 1992-03-18 1995-12-05 Judkins; Ren Cord lock and release system for blinds
US20040226666A1 (en) * 2003-05-15 2004-11-18 Tyner James D. Cord lock
US6823926B1 (en) * 2003-05-15 2004-11-30 Ita, Inc. Cord lock
US20050056384A1 (en) * 2003-09-02 2005-03-17 Hunter Douglas Industries Bv Automatically activated cord lock
US7117920B2 (en) * 2003-09-02 2006-10-10 Hunter Douglas Industries Bv Automatically activated cord lock

Also Published As

Publication number Publication date
AT245779B (de) 1966-03-10
CH388558A (de) 1965-02-28
BE605432A (nl) 1961-10-16
GB952503A (en) 1964-03-18

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