US3789904A - Double curtain device - Google Patents

Double curtain device Download PDF

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Publication number
US3789904A
US3789904A US00323363A US3789904DA US3789904A US 3789904 A US3789904 A US 3789904A US 00323363 A US00323363 A US 00323363A US 3789904D A US3789904D A US 3789904DA US 3789904 A US3789904 A US 3789904A
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United States
Prior art keywords
winding shaft
curtain
diameter tube
chain
fitting
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
US00323363A
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English (en)
Inventor
I Takazawa
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Individual
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Individual
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Publication date
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Application granted granted Critical
Publication of US3789904A publication Critical patent/US3789904A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47H—FURNISHINGS FOR WINDOWS OR DOORS
    • A47H23/00—Curtains; Draperies
    • A47H23/02—Shapes of curtains; Selection of particular materials for curtains
    • A47H23/04—Shapes of curtains
    • A47H23/06—Systems consisting of two or more co-operating curtains with transparent or perforated parts behind each other
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47H—FURNISHINGS FOR WINDOWS OR DOORS
    • A47H1/00—Curtain suspension devices

Definitions

  • ABSTRACT A double curtain device wherein a curtain (5) provided with punched patterns (29) is connected at the respective ends with a main winding shaft (2) and auxiliary winding shaft (3) both rotatably provided between right and left supporting cases (1), a balance weight shaft (8) is inserted and held in a folded part (7) of the curatin (5) so as to tension the curtain (5), a joint (9) is slidably fitted to the main winding shaft (2) so that the length of the main winding shaft (2) may be adjustable, said auxiliary winding shaft (3) is formed by fitting a small diameter tube (15) provided with an axial groove (14) cut on one side into a large diameter tube (16) provided also with an axial groove (14) cut on one side, many annular concave grooves (17) and annular convex parts (18) fitting them are formed respectively in the fitting parts of the small diameter tube (15) and large diameter tube (16) so that the length of the auxiliary winding shaft may be adjustable and a winding chain (25) is hung on a chain wheel (24) secured to one end of the
  • PAIEMEB FEB 5 I974 SHEET 3 BF 3 DOUBLE CURTAIN DEVICE This invention is a double curtain device wherein proper punched patterns for ventilation are formed in a curtain made to be wound up in both end parts with winding shafts so as to be of a double formation in the suspended part.
  • FIG. 1 is a vertically sectioned elevation with a part omitted:
  • FIG. 2 is a vertically sectioned side view of the same
  • FIG. 3 is a vertically sectioned side view showing a main winding shaft
  • FIG. 4 is a perspective view showing a joint
  • FIG. 5 is a partly sectioned perspective view showing a fitting part of anauxiliary winding shaft
  • FIG. 6 is a partly sectioned elevation showing a supporting case
  • FIG. 7 is a bottom view of FIG. 6.
  • a main winding shaft (2) and auxiliary winding shaft (3) are rotatably horizontally set in supporting cases (1), fitting concave grooves (4) extended in the axial direction are properly made on the peripheral surface of the main winding shaft (2), a curtain (5) is fitted to the main winding shaft (2) by inserting and fitting a wire (6) on which the curtain (5) is wound at one end into the fitting concave groove (4) and is fitted at the other end to the auxiliary winding shaft (5) and a balance weight shaft (8) provided with a flange at each end is inserted into a folded part (7) of the curtain (5) wound at both ends so as to tension the curtain (5).
  • the above mentioned main winding shaft (2) is divided into two parts in the middle in the axial direction and both parts are connected with each other through a joint (9) for adjusting the length.
  • a pair of sliders (12) provided with a bent piece (10) on each side, having an engaging piece (11) in one end part and slidable within the main winding shaft (2) are connected with each other by leaving a proper clearance between them through adjusting set screws (13) so that, when the clearance between both sliders (12) is expanded by adjustingthe adjusting set screws (13), the bent pieces (10) may be pressed against the inner peripheral surface of the main winding shaft (2) to connect and fix the divided parts of the main winding shaft (2) with each other.
  • the auxiliary winding shaft (3) is formed by fitting a small diameter tube provided with an axial groove (14) cut on one side into a large diameter tube (16) provided also with an axial groove (14) cut on one side, annular concave grooves (17) are provided at proper intervals on the outside peripheral surface of the fitting part of the small diameter tube (15), annular convex parts (18) fitting the above mentioned annular concave grooves (17) are provided to project on the inside peripheral surface of the fitting part of the large diameter tube (16) and the annular concave grooves (17) are properly fitted to the annular convex parts (18) by a spring action through the above mentioned cut axial grooves (14) to freely adjust the length.
  • an adjusting rod (19) connected with the flange is adjustably inserted and fitted in the balance weight shaft.
  • the lengths of the main winding shaft (2), auxiliary winding shaft (3) and balance weight shaft (8) are made adjustable in response to the fitting position of the curtain (5).
  • a winding rope (21) is hung on the projecting end of the main winding shaft (2) through a rope pulley (20), a pair of engaging pawls (22) are swingably provided closely to the winding rope 21).
  • Said engaging pawl (22) is formed arcuately and has engaging teeth (23) in the free end part to engage the winding rope 21) in any position so that, at the time of winding up the winding rope (21), the engaging pawl may swing downward due to its own weight to disengage the rope but normally the engaging teeth (23) may bite into the winding rope (21) and may engage and fix the rope by holding it with one side of the supporting case (1).
  • a winding chain (25) is hung on the projecting end of the auxiliary winding shaft (3) through a chain wheel (24) in the same manner as is mentioned above and engaging holes (26) are made as opposed to the chain on the bottom surface of the supporting case (1) so that the winding chain (25 that is, the auxiliary winding shaft (3) may be engaged in any position.
  • each of the above mentioned engaging holes (26) has an engaging groove (27) directed inward so that a connecting neck part (28) of the winding chain (25) may engage the groove (27).
  • Punched patterns (29) are formed in the curtain (5) so as to be overlapped to form through hole parts by the overlapping state of the curtain (5).
  • the curtain (5) wound on the main winding shaft (2) is properly wound up through the winding rope (21) so that the suspended length of the curtain may coincide with the height of the window frame (not illustrated).
  • the auxiliary winding shaft (3) is rotated through the winding chain (25) for the slight adjustment of the punched patterns. That is to say, when the suspended length of the curtain (5) varies unfavorably if the punched patterns (29) are adjusted only by the winding of the'main winding shaft (2), the auxiliary winding shaft (3) is adjusted and rotated to adjust the suspended length together with the patterns. Needless to say, it is possible as mentioned above to adjust the lengths of the main winding shaft (2), auxiliary winding shaft (3) and balance weight shaft (8) in response to the width of the curtain (5) or fitting window frame.
  • a curtain (5) provided with punched patterns (29) is connected at the respective ends with a main winding shaft (2) and auxiliary winding shaft (3) both rotatably provided between right and left supporting cases (1), a balance weight shaft (8) is inserted and held in a folded part (7) of the curtain (5) so as to tension the curtain (5), a joint (9) is slidably fitted to the main winding shaft (2) so that the length of the main winding shaft (2) may be adjustable, said auxiliary winding shaft (3) is fonned by fitting a small diameter tube (15 provided with an axial-groove (14) cut on one side into a large diameter tube (16) provided also with an axial groove (14) cut on one side, many annular concave grooves (17) and annular convex parts (18) fitting them are formed respectively in the fitting parts of the small diameter tube (15) and large diameter tube (16) so that the length of the auxiliary winding shaft may be adjustable, a winding chain (25) is hung on a chain wheel (24) secured to one end
  • a double curtain device wherein a curtain provided with punched patterns is connected at the respective ends with a main winding shaft and auxiliary winding shaft both rotatably provided between right and left supporting cases, a balance weight shaft is inserted and held in a folded part of the curtain so as to tension the curtain, a joint is slidably fitted to the main winding shaft (2) so that the length of the main winding shaft may be adjustable, said auxiliary winding shaft is formed by fitting a small diameter tube provided with an axial groove cut on one side into a large diameter tube provided also with an axial groove cut on one side, many annular concave grooves and annular convex parts fitting them are formed respectively in the fitting parts of the small diameter tube and large diameter tube so that the length of the auxiliary winding shaft may be adjustable, a winding chain is hung on a chain wheel secured to one end of the auxiliary winding shaft and engaging holes for said winding chain are made as opposed to the chain on the lower surface of the supporting case.

Landscapes

  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
US00323363A 1972-04-24 1973-01-15 Double curtain device Expired - Lifetime US3789904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972047543U JPS5140913Y2 (OSRAM) 1972-04-24 1972-04-24

Publications (1)

Publication Number Publication Date
US3789904A true US3789904A (en) 1974-02-05

Family

ID=12778046

Family Applications (1)

Application Number Title Priority Date Filing Date
US00323363A Expired - Lifetime US3789904A (en) 1972-04-24 1973-01-15 Double curtain device

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US (1) US3789904A (OSRAM)
JP (1) JPS5140913Y2 (OSRAM)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980122A (en) * 1974-05-13 1976-09-14 Ietsugu Takazawa Curtain turning device
US4033397A (en) * 1975-11-26 1977-07-05 The Scott & Fetzer Company Roll bar device for retractable awnings
US4139043A (en) * 1977-03-10 1979-02-13 Joanna Western Mills Company Window shade slat
US4344474A (en) * 1979-11-16 1982-08-17 Joel Berman Insulated shade
US4418739A (en) * 1982-01-15 1983-12-06 Appropriate Technology Corporation Insulating window covering
US4953610A (en) * 1989-03-17 1990-09-04 Ultimate Window Coverings, Inc. Double window shade assembly with independent shade movement
USRE34273E (en) * 1989-03-17 1993-06-08 Ultimate Window Coverings, Inc. Double window shade assembly with independent shade movement
US5566736A (en) * 1995-11-13 1996-10-22 Crider; Grant W. Sealable curtain
WO1997018376A1 (en) * 1995-11-13 1997-05-22 Hired Hand Manufacturing, Inc. Sealable cover
US6004182A (en) * 1996-08-12 1999-12-21 Radio Flyer, Inc. Temporary structure
ES2142708A1 (es) * 1996-10-16 2000-04-16 Inter Estor Persiana perfeccionada.
US6138739A (en) * 1999-01-15 2000-10-31 Grant W. Crider Portal covering
US6189592B1 (en) * 1998-03-19 2001-02-20 Harmonic Design, Inc. Roll up shade doubled fabric having patterns thereon
US6460593B1 (en) * 1999-08-18 2002-10-08 James C. Floyd Adjustable-width roller shade configured to maintain orthogonal tracking at all available widths
US20040188034A1 (en) * 2003-03-26 2004-09-30 Powell Billy R. Retractable awning
US20060021715A1 (en) * 2004-07-30 2006-02-02 Leslie Nien Roller blind structure
US20060096716A1 (en) * 2004-11-09 2006-05-11 Fu-Lai Yu Customizable row assembly and method of manufacturing a window covering
US20070277938A1 (en) * 2006-05-05 2007-12-06 Crider Grant W Portal covering for controlled environments
US20080185107A1 (en) * 2007-02-03 2008-08-07 Migues Clarence J Brace for awning roller tube
US20080245490A1 (en) * 2003-09-08 2008-10-09 Hunter Douglas Industries Bv Attachment of an architectural covering
US20090025887A1 (en) * 2005-10-11 2009-01-29 Osamu Ito Movable awning device and winding roller for projected corner canvas
US20090242143A1 (en) * 2008-04-01 2009-10-01 Dung Viet Pham Portable roll up window blind
US20090250177A1 (en) * 2006-08-24 2009-10-08 Tae Woong Byeon Blinds for adjusting illumination made of thick material
US20100024991A1 (en) * 2008-07-31 2010-02-04 Carefree/Scott Fetzer Company Sag-free retractable awning
US20100307697A1 (en) * 2009-06-03 2010-12-09 David Perkowitz Multiple window shade system and method
US20110061821A1 (en) * 2008-05-07 2011-03-17 Sung Chul Kim Roll blind
US20140158312A1 (en) * 2012-12-05 2014-06-12 David M. Townsley Laterally repositionable roller shade
US20160153230A1 (en) * 2013-07-15 2016-06-02 Louver-Lite Limited Roller Blind
US9631422B1 (en) * 2016-02-01 2017-04-25 Calendar Enterprises Co., Ltd. Roller shade with a light regulating function
US10513884B2 (en) 2015-02-04 2019-12-24 Hunter Douglas Inc. Roller shade assembly with multiple shade configurations
GB2602502A (en) * 2021-01-05 2022-07-06 Day Perry Day-and-night blind

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1299481A (en) * 1918-05-11 1919-04-08 Henry S Klein Background-carrier.
US2281022A (en) * 1940-08-01 1942-04-28 Cavanaugh Thomas Joseph Shade construction
US2307095A (en) * 1940-07-17 1943-01-05 Zaferakis Alfred Combination window shade and screen roller
US2581433A (en) * 1945-09-29 1952-01-08 North John Window shade
US3128688A (en) * 1962-06-12 1964-04-14 Coda Alfred Photographic background roller assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1299481A (en) * 1918-05-11 1919-04-08 Henry S Klein Background-carrier.
US2307095A (en) * 1940-07-17 1943-01-05 Zaferakis Alfred Combination window shade and screen roller
US2281022A (en) * 1940-08-01 1942-04-28 Cavanaugh Thomas Joseph Shade construction
US2581433A (en) * 1945-09-29 1952-01-08 North John Window shade
US3128688A (en) * 1962-06-12 1964-04-14 Coda Alfred Photographic background roller assembly

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980122A (en) * 1974-05-13 1976-09-14 Ietsugu Takazawa Curtain turning device
US4033397A (en) * 1975-11-26 1977-07-05 The Scott & Fetzer Company Roll bar device for retractable awnings
US4139043A (en) * 1977-03-10 1979-02-13 Joanna Western Mills Company Window shade slat
US4344474A (en) * 1979-11-16 1982-08-17 Joel Berman Insulated shade
US4418739A (en) * 1982-01-15 1983-12-06 Appropriate Technology Corporation Insulating window covering
USRE34273E (en) * 1989-03-17 1993-06-08 Ultimate Window Coverings, Inc. Double window shade assembly with independent shade movement
US4953610A (en) * 1989-03-17 1990-09-04 Ultimate Window Coverings, Inc. Double window shade assembly with independent shade movement
US5566736A (en) * 1995-11-13 1996-10-22 Crider; Grant W. Sealable curtain
WO1997018376A1 (en) * 1995-11-13 1997-05-22 Hired Hand Manufacturing, Inc. Sealable cover
US5752557A (en) * 1995-11-13 1998-05-19 Hired-Hand Manufacturing, Inc. Sealable curtain
US5785105A (en) * 1995-11-13 1998-07-28 Crider; Grant W. Sealable curtain
US5960847A (en) * 1995-11-13 1999-10-05 Hired Hand Manufacturing, Inc. Sealable curtain
US6004182A (en) * 1996-08-12 1999-12-21 Radio Flyer, Inc. Temporary structure
ES2142708A1 (es) * 1996-10-16 2000-04-16 Inter Estor Persiana perfeccionada.
US6189592B1 (en) * 1998-03-19 2001-02-20 Harmonic Design, Inc. Roll up shade doubled fabric having patterns thereon
US6138739A (en) * 1999-01-15 2000-10-31 Grant W. Crider Portal covering
US6460593B1 (en) * 1999-08-18 2002-10-08 James C. Floyd Adjustable-width roller shade configured to maintain orthogonal tracking at all available widths
US20040188034A1 (en) * 2003-03-26 2004-09-30 Powell Billy R. Retractable awning
WO2004088065A3 (en) * 2003-03-26 2004-12-23 Powell And Powell Supply Compa Retractable awning
US6957679B2 (en) * 2003-03-26 2005-10-25 Powell & Powell Supply Co., Inc. Retractable awning
US8662137B2 (en) * 2003-09-08 2014-03-04 Hunter Douglas Industries Bv Attachment of an architectural covering
US20080245490A1 (en) * 2003-09-08 2008-10-09 Hunter Douglas Industries Bv Attachment of an architectural covering
US20060021715A1 (en) * 2004-07-30 2006-02-02 Leslie Nien Roller blind structure
US7174940B2 (en) * 2004-07-30 2007-02-13 Leslie Nien Roller blind structure
US20060096716A1 (en) * 2004-11-09 2006-05-11 Fu-Lai Yu Customizable row assembly and method of manufacturing a window covering
WO2006052268A3 (en) * 2004-11-09 2007-07-12 David Huang Customizable row assembly and method of manufacturing a window covering
CN100435699C (zh) * 2004-11-09 2008-11-26 德侑股份有限公司 自行定制宽度的帘片组合及窗帘的制造方法
US20090025887A1 (en) * 2005-10-11 2009-01-29 Osamu Ito Movable awning device and winding roller for projected corner canvas
US20070277938A1 (en) * 2006-05-05 2007-12-06 Crider Grant W Portal covering for controlled environments
US7828037B2 (en) * 2006-05-05 2010-11-09 Crider Grant W Portal covering for controlled environments
US20090250177A1 (en) * 2006-08-24 2009-10-08 Tae Woong Byeon Blinds for adjusting illumination made of thick material
US7806160B2 (en) * 2006-08-24 2010-10-05 Tae Woong Byeon Blinds for adjusting illumination made of thick material
US8631851B2 (en) * 2007-02-03 2014-01-21 Clarence Jules Migues Brace for awning roller tube
US20080185107A1 (en) * 2007-02-03 2008-08-07 Migues Clarence J Brace for awning roller tube
US7621313B2 (en) * 2008-04-01 2009-11-24 Dung Viet Pham Portable roll up window blind
US20090242143A1 (en) * 2008-04-01 2009-10-01 Dung Viet Pham Portable roll up window blind
US9249620B2 (en) * 2008-05-07 2016-02-02 Sung Chul Kim Roll blind
US20110061821A1 (en) * 2008-05-07 2011-03-17 Sung Chul Kim Roll blind
US20100024991A1 (en) * 2008-07-31 2010-02-04 Carefree/Scott Fetzer Company Sag-free retractable awning
US20100307697A1 (en) * 2009-06-03 2010-12-09 David Perkowitz Multiple window shade system and method
US20140158312A1 (en) * 2012-12-05 2014-06-12 David M. Townsley Laterally repositionable roller shade
US9725949B2 (en) * 2012-12-05 2017-08-08 Mcd Innovations Laterally repositionable roller shade
US20170335624A1 (en) * 2012-12-05 2017-11-23 Airxcel, Inc. Laterally repositionable roller shade
US10829991B2 (en) * 2012-12-05 2020-11-10 MCD Innovations, Inc. Laterally repositionable roller shade
US20160153230A1 (en) * 2013-07-15 2016-06-02 Louver-Lite Limited Roller Blind
US9689200B2 (en) * 2013-07-15 2017-06-27 Louver-Lite Limited Roller blind
US10513884B2 (en) 2015-02-04 2019-12-24 Hunter Douglas Inc. Roller shade assembly with multiple shade configurations
US9631422B1 (en) * 2016-02-01 2017-04-25 Calendar Enterprises Co., Ltd. Roller shade with a light regulating function
GB2602502A (en) * 2021-01-05 2022-07-06 Day Perry Day-and-night blind
GB2602502B (en) * 2021-01-05 2025-02-05 Day Perry Day-and-night blind

Also Published As

Publication number Publication date
JPS5140913Y2 (OSRAM) 1976-10-06
JPS499518U (OSRAM) 1974-01-26

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