US2849062A - Venetian blind tilting mechanism - Google Patents

Venetian blind tilting mechanism Download PDF

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Publication number
US2849062A
US2849062A US658135A US65813557A US2849062A US 2849062 A US2849062 A US 2849062A US 658135 A US658135 A US 658135A US 65813557 A US65813557 A US 65813557A US 2849062 A US2849062 A US 2849062A
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Prior art keywords
gear
shaft
pulley
cord
tilting mechanism
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Expired - Lifetime
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US658135A
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Lloyd O Bonsteel
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    • 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
    • E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
    • E06B9/307—Details of tilting bars and their operation
    • 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
    • E06B2009/285—Means for actuating a rod (being tilt rod or lift rod)

Definitions

  • the present invention relates to a tilting mechanism for a Venetian blind.
  • Venetian blinds have their slats manually tiltable by means f a length of cord traveling over a pulley the latter being drivably connected to the.
  • a defect in such an arrangement is that the cord slips on the pulley and one end or the other becomes too short or too long, lacks neatness in appearance, and requires lifting from the pulley so that it may be correctly positioned thereon. It has been attempted to ⁇ construct the gears, and the gear segments driven by the pulley, so that free motion of the pulley is permitted at one end or the other of the gear rotational movement. This expedient only results in worn gears, bent slats and frequently jammed tilting mechanisms.
  • An object lof the present invention is to provide a structure which avoidsl the diculty above described, lends itself to rapid rearrangement of the cord relative to the pulley without tilting of the slats, without disassembly of the tilting mechanism, and without further pulling of the cord through an immovable pulley, which in the past has served only to fray, wear or stretch the cord, and to impart an unwanted smoothness to the pulley groove, consequently resulting in further slipping of the cord in the pulley.
  • Another object of the present invention is to provide a tilting mechanism for a Venetian blind which is of sturdy construction, one simple in structure, one economical to manufacture and assemble, and one which is highly effective in action.
  • Figure 1 is a fragmentary view in elevation of the tilting mechanism of the present invention, as seen longitudinally of the supporting bracket or box, the box and the tape supporting shaft being shown in section,
  • Figure 2 is a partial plan view of the assembly of Figure 1, also showing the connection of the tapes to the shaft,
  • Figure 3 is a reverse elevational view, showing the operation of the present invention
  • Figure 4 is a sectional view taken on the line 4-4 of Figure l.
  • Figure 5 is a sectional view taken on the line 5 5 of Figure 4.
  • the tilting mechanism of the present invention comprises a brack-et in the form of an elongated box having an open top, and a support means for the tapes 11 and 12 which extend below the bracket 10 and between which are supported a plurality of horizontally disposed slats arranged in spaced relation when in the window-opening bridging position, neither the window-A opening nor the slats being here illustrated as not a part of the present invention.
  • the support means is here shown as a horizontally disposed rod or bar 13 extending longitudinally of the bracket 10 and supported therein at one end by the normally upright ⁇ U-shaped member 14 which has the upper end of one leg 15 formed with gear teeth 16 constituting a gear.
  • the other leg 17 of the member 14 is provided with an aperture, here shown as square in shape, receiving the adjacent end portion of the bar 13.
  • the end portion of the bar 13 is xedly secured in the aperture in the leg 17 of the member 14.
  • a box structure 9 on the bar 13 supports the tapes 11 and 12.
  • An upright pillow block 18 is carried within the bracket 10 and, by means of a pivot pin 19, supports the leg 15 of the member 14 by 'rocking movement about the pin 19 as a horizontal axis.
  • An upwardly extending post 21 rises from one end of the black 18 and is formed integrally therewith.
  • the post 21 is channel shaped, as'shown most clearly in Fig. 5, for greater rigidity, and a sleeve 22 is connected Vto the post 21 means of a stub shaft 23 which projects from one side of the sleeve 22, for rocking movement Iabout the stub shaft 23 as a transverse horizontal axis.
  • the sleeve 22 supports a shaft 24 for rotational movement in both directions.
  • Gear means embodying a worm 25, is ixedly secured to the mid-portion of the shaft 24 and is normally in meshing engagement with the gear teeth 16 on the leg 15 of the member 14.
  • a pulley 26 is carried on the end -of the shaft 24 at the end of the lsleeve 23 remote from the worm 25 and an actuating cord 27 has a mid-portion traveling over the pulley 26 for eecting the rotational movements of the shaft 24.
  • the cord 27 constitutes a length of flexible actuating means and a length of cable, chain or other ilexible element may be substituted therefor.
  • a knob 28 is fixed to each free end of the cord 27 for grasping by the hand.
  • the stub shaft 23 constitutes means by which the shaft 24 is connected to the bracket 10 for movement from the normal position in which the worm 25 is in meshing engagement with the gear teeth 16, as shown in Figures 1, 2 and 4, to the tilting position in which the Worm 25 is out of meshing engagement with the gear teeth 16, as shown in Figure 3.
  • This movement is effected by pulling both free ends of the cord 17 simultaneously and with a force of sufficient strength as to overcome the tension of a spring 29 which urges the shaft 24 to the position in which the worm 25 is in meshing engagement with the gear teeth 16.
  • the use of the device of the present invention will be seen to save the cord 27 from wear, will permit the addition of gripping means to the pulley 26 if desired, and will save on the wear of the tilting mechanism of the Venetian blind with which it is used.
  • a device for electing the rocking movements of said support means comprising a gear carried by said support means, a rotatable shaft positioned adjacent said gear and having gear means thereon normally in meshing engagement with said gear, means conadjacent the upper end of fthe latter, by l neetnglsad.
  • said support means comprisingv a gear car- ⁇ ried by said support means, a rotatable shaft positioned adjacent said gear and having gear means thereon normally in meshing engagement with said gear, means conheetingmsaid shaft to said bracket for movement 0f said shaft about a transverse horizontal axis from the position in which said gear means is in meshing engagement with said gear to a tilted position in which said gear means is out of meshing engagement with said gear, a pulley carried by said shaft, a length of flexible actuating means having a midportion traveling over said pulley, the free ends of said last-named means being manually adjustablerelative to ⁇ each otherupon execution of movement of said shaft to the tilted position in which said gear means is out of 'meshing engagement with' said gear and consequent freeing of said pulley and shaft for rotational movement together independently of said gear, and spring meansoperativelyconnectedA to said shaft for urging said shaft to the position in which said gear means is in meshing engagement with said gear.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)

Description

L.o.BoNs1'EEL 2,849,062 VENETIANBLIND TILTING max-mmm Filed May 9. 1957 INVENTOR.
Aug. 26, 1958 United States Patent VENETIAN BLIND TIL'IING MECHANISM Lloyd O. Bonsteel, Indian Head, Md. Application May 9, 1957, Serial N o. 658,135
2 Claims. (Cl. 160-176) The present invention relates to a tilting mechanism for a Venetian blind.
As presently in use, Venetian blinds have their slats manually tiltable by means f a length of cord traveling over a pulley the latter being drivably connected to the.
tilting mechanism. A defect in such an arrangement is that the cord slips on the pulley and one end or the other becomes too short or too long, lacks neatness in appearance, and requires lifting from the pulley so that it may be correctly positioned thereon. It has been attempted to `construct the gears, and the gear segments driven by the pulley, so that free motion of the pulley is permitted at one end or the other of the gear rotational movement. This expedient only results in worn gears, bent slats and frequently jammed tilting mechanisms. An object lof the present invention is to provide a structure which avoidsl the diculty above described, lends itself to rapid rearrangement of the cord relative to the pulley without tilting of the slats, without disassembly of the tilting mechanism, and without further pulling of the cord through an immovable pulley, which in the past has served only to fray, wear or stretch the cord, and to impart an unwanted smoothness to the pulley groove, consequently resulting in further slipping of the cord in the pulley.
Another object of the present invention is to provide a tilting mechanism for a Venetian blind which is of sturdy construction, one simple in structure, one economical to manufacture and assemble, and one which is highly effective in action.
These and other objects and advantages of the present invention will be fully apparent from the following description when taken in conjunction with the annexed drawing in which:
Figure 1 is a fragmentary view in elevation of the tilting mechanism of the present invention, as seen longitudinally of the supporting bracket or box, the box and the tape supporting shaft being shown in section,
Figure 2 is a partial plan view of the assembly of Figure 1, also showing the connection of the tapes to the shaft,
Figure 3 is a reverse elevational view, showing the operation of the present invention,
Figure 4 is a sectional view taken on the line 4-4 of Figure l, and
Figure 5 is a sectional view taken on the line 5 5 of Figure 4.
Referring in greater detail to the drawing in which like numerals indicate like parts throughout the several views, the tilting mechanism of the present invention comprises a brack-et in the form of an elongated box having an open top, and a support means for the tapes 11 and 12 which extend below the bracket 10 and between which are supported a plurality of horizontally disposed slats arranged in spaced relation when in the window-opening bridging position, neither the window-A opening nor the slats being here illustrated as not a part of the present invention.
Pce
The support means is here shown as a horizontally disposed rod or bar 13 extending longitudinally of the bracket 10 and supported therein at one end by the normally upright `U-shaped member 14 which has the upper end of one leg 15 formed with gear teeth 16 constituting a gear. The other leg 17 of the member 14 is provided with an aperture, here shown as square in shape, receiving the adjacent end portion of the bar 13. The end portion of the bar 13 is xedly secured in the aperture in the leg 17 of the member 14. A box structure 9 on the bar 13 supports the tapes 11 and 12.
An upright pillow block 18 is carried within the bracket 10 and, by means of a pivot pin 19, supports the leg 15 of the member 14 by 'rocking movement about the pin 19 as a horizontal axis.'
An upwardly extending post 21 rises from one end of the black 18 and is formed integrally therewith. 'The post 21 is channel shaped, as'shown most clearly in Fig. 5, for greater rigidity, and a sleeve 22 is connected Vto the post 21 means of a stub shaft 23 which projects from one side of the sleeve 22, for rocking movement Iabout the stub shaft 23 as a transverse horizontal axis.
The sleeve 22 supports a shaft 24 for rotational movement in both directions. Gear means, embodying a worm 25, is ixedly secured to the mid-portion of the shaft 24 and is normally in meshing engagement with the gear teeth 16 on the leg 15 of the member 14. A pulley 26 is carried on the end -of the shaft 24 at the end of the lsleeve 23 remote from the worm 25 and an actuating cord 27 has a mid-portion traveling over the pulley 26 for eecting the rotational movements of the shaft 24. The cord 27 constitutes a length of flexible actuating means and a length of cable, chain or other ilexible element may be substituted therefor. A knob 28 is fixed to each free end of the cord 27 for grasping by the hand.
The stub shaft 23 constitutes means by which the shaft 24 is connected to the bracket 10 for movement from the normal position in which the worm 25 is in meshing engagement with the gear teeth 16, as shown in Figures 1, 2 and 4, to the tilting position in which the Worm 25 is out of meshing engagement with the gear teeth 16, as shown in Figure 3. This movement is effected by pulling both free ends of the cord 17 simultaneously and with a force of sufficient strength as to overcome the tension of a spring 29 which urges the shaft 24 to the position in which the worm 25 is in meshing engagement with the gear teeth 16.
From the above description and the annexed drawing, it will be clearly apparent that pulling both free ends of the cord 27 will permit the freeing of the pulley 26 and shaft 24 so that the cord 27 may be pulled in either direction to adjust it. Normal use of the cord 27 with a lighter pull will serve to effect the tilting movements of the bar 13 and consequent adjustment of the slats of the blind.
The use of the device of the present invention will be seen to save the cord 27 from wear, will permit the addition of gripping means to the pulley 26 if desired, and will save on the wear of the tilting mechanism of the Venetian blind with which it is used.
What is claimed is:
1. In a Venetian blind including a support bracket, vertically disposed Slat-supporting tapes extending below said bracket, and support means for said tapes rockably carried by said bracket for imparting Slat-tilting movements to said tapes, a device for electing the rocking movements of said support means comprising a gear carried by said support means, a rotatable shaft positioned adjacent said gear and having gear means thereon normally in meshing engagement with said gear, means conadjacent the upper end of fthe latter, by l neetnglsad. shafttosaidbracket for movement of said shaft about a transverse horizontal axis from the'position in which said gear means is in meshing engagement with said gear to a'tilted position in which said gear means 'Y is out yof meshing engagement with said gear,.
a pulley carried by said shaft, andV a length: of exible actuating means havinga midportion traveling'over saidv pulley, the freeends of said last-named means being.v
movements of said support means comprisingv a gear car-` ried by said support means, a rotatable shaft positioned adjacent said gear and having gear means thereon normally in meshing engagement with said gear, means conheetingmsaid shaft to said bracket for movement 0f said shaft about a transverse horizontal axis from the position in which said gear means is in meshing engagement with said gear to a tilted position in which said gear means is out of meshing engagement with said gear, a pulley carried by said shaft, a length of flexible actuating means having a midportion traveling over said pulley, the free ends of said last-named means being manually adjustablerelative to` each otherupon execution of movement of said shaft to the tilted position in which said gear means is out of 'meshing engagement with' said gear and consequent freeing of said pulley and shaft for rotational movement together independently of said gear, and spring meansoperativelyconnectedA to said shaft for urging said shaft to the position in which said gear means is in meshing engagement with said gear.
ReferencesCited .in the le of this patent UNITED STATES PATENTS
US658135A 1957-05-09 1957-05-09 Venetian blind tilting mechanism Expired - Lifetime US2849062A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541468A (en) * 1983-10-19 1985-09-17 Hunter Douglas, Inc. Tilter mechanism for a slatted blind
US5238043A (en) * 1992-01-31 1993-08-24 Better Mousetraps, Inc. Apparatus for accurate adjustment of the slats in a venetian blind

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224712A (en) * 1940-08-19 1940-12-10 Harry G Balthasar Venetian blind tilter mechanism
US2599884A (en) * 1950-08-21 1952-06-10 Anderson Die Casting & Enginee Venetian blind tilting mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224712A (en) * 1940-08-19 1940-12-10 Harry G Balthasar Venetian blind tilter mechanism
US2599884A (en) * 1950-08-21 1952-06-10 Anderson Die Casting & Enginee Venetian blind tilting mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541468A (en) * 1983-10-19 1985-09-17 Hunter Douglas, Inc. Tilter mechanism for a slatted blind
US5238043A (en) * 1992-01-31 1993-08-24 Better Mousetraps, Inc. Apparatus for accurate adjustment of the slats in a venetian blind

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