US3521337A - Universal assembling machine for the manufacture of stacks of slats for venetian blinds - Google Patents

Universal assembling machine for the manufacture of stacks of slats for venetian blinds Download PDF

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Publication number
US3521337A
US3521337A US698932A US3521337DA US3521337A US 3521337 A US3521337 A US 3521337A US 698932 A US698932 A US 698932A US 3521337D A US3521337D A US 3521337DA US 3521337 A US3521337 A US 3521337A
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United States
Prior art keywords
ladder
slats
machine
slat
lift
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Expired - Lifetime
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US698932A
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English (en)
Inventor
Hubertus Lodewijk Petr Peeters
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Hunter Douglas International Ltd
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Hunter Douglas International
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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
    • E06B9/266—Devices or accessories for making or mounting lamellar blinds or parts thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/39—Venetian blind assembling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53978—Means to assemble or disassemble including means to relatively position plural work parts

Definitions

  • This invention relates to an assembling machine for Venetian blinds.
  • the invention provides a novel assembling machine for the manufacture of entirely or partly finished stacks of slats for Venetian blinds with slats and the like carried by ladder means, said machine comprising among other things fastening means for temporarily fastening said ladder means mutually spaced to the machine, a lifting device actuated by a driving mechanism for periodically raising one or more slats and/or the ladder means, tensioning and/ or guide means for the ladder means and, if necessary, guides for guiding the slats when being fed into the machine, said assembling machine being also provided with means for applying ladder cords and the like or ladder tapes and the like according to choice.
  • the ladder cord tensioning and/or guiding mechanism and the ladder tape tensioning and/or guiding mechanism are interchangeable and the machine comprises at least one frame adapted to be moved and fixed relative to a stationary with fastening means for co-operation both with fastening means of the ladder cord tensioning and/or guiding mechanism and with fastening means of the ladder tape tensioning and/ or guiding mechanism.
  • the machine may be provided, according to the invention with an adjusting and regulating mechanism which co-operates with the driving mechanism of the lifting cle vice for adjusting the lift according to choice, as well as with operating means for said mechanism.
  • FIG. 1 presents a diagrammatical front view of the machine.
  • FIG. 2 is a top plan view of the machine.
  • FIG. 3 is a front view of a ladder tape guiding and tensioning unit.
  • FIG. 3a presents a top plan view of a portion of the unit according to FIG. 3.
  • FIG. 4 shows the unit according to FIG. 3 in another position.
  • FIG. 5 shows a front view of a ladder tape guiding and tensioning unit, including a lift cord threading unit.
  • FIG. 5a presents a top plan view of a spacer.
  • FIG. 6 shows a unit according to FIG. 5 in another position.
  • FIG. 7 shows a front view in perspective and on an enlarged scale of the unit according to FIGS. 5 and 6 with the ladder cord unit removed.
  • the machine shown in FIGS. 1 and 2 comprises a frame 1 provided with supports 2, 3 with which the frame rests on the ground.
  • the lifting device comprises a shaft 4 supported in bearings 5, 6 which by means of bearing bracket supports 7, 8 are secured to the frame 1.
  • the shaft 4 carries one half of an electro-magnetic clutch 9, 10 the other half 10 of which is fixedly secured to the shaft of an electromotor 11 mounted on the frame 1.
  • the shaft 4 furthermore carries, distributed over its length, a number of pulleys 12, having as an example only four in the embodiment shown.
  • the pulleys are slidable along the shaft 4, but they are mounted non-rotatably relative thereof in that the shaft 4 has a square.cross-section and in the pulleys 12 a corresponding square central aperture is provided.
  • the slidability is desired in order to be able to change the position of guides for the slats and means for the provision of ladder means (to be described later on), from which the slats are suspended, along the slats.
  • each pulley 12 there is secured to the frame 1 a vertically extending guide plate 13 along which a lift plate 14 is guided in a vertically slidable manner.
  • the lift plate 14 is connected with the pulley 12 by a tape 15 of spring steel one end of which is fastened to the lift plate 14 and the other end to a point on the circumference of the pulley 12.
  • the lift plate 14 carries two forwardly projecting pins 16 by means of which a slat 17, horizontally fed into the machine, is supported and stays thereon after the slat has been entirely fed into the machine. By rotation of the shaft 4 in one direction the slat 17 is lifted.
  • cam discs 70,71, 72 which serve to control the lift of the lift plates 14 with pins 16. If three different slat widths are used, for example 25, 35 and 50 mm., three cam discs are provided as shown.
  • This micro switch is included in the energizing circuit of the electro-magnetical clutch 9, 10. The assembly operates such that when the motor 11 is started and a slat 17 has been entirely fed into the machine, said slat comes into contact with an end switch 75 operated by the slat, said switch being likewise included in the energizing circuit of the clutch.
  • the switch 74 is horizontally slidable on the frame 1.
  • a gear rack is provided engaging a pinion which is fixed on a shaft 77.
  • the shaft 77 projects from the frame 1 and there carries an operating knob 78 with an operating lever 79, said knob 78 being movable along a dial fixedly provided on the frame.
  • Three positions are possible for the knob 78 with the operating lever 79 (corresponding with the slat widths of 25, 35 and 50' mm.), in each of which the follower roller 73 faces one of the discs 70, 71 or 72.
  • the position of the cams on said discs is such that therewith each time a lift of the lift plates 14 is obtained which coresponds to the pitch of the ladder cross connections for the slat width in question.
  • various ladders may be used with mutually deviating pitch of the cross connections for special types of Venetian blinds. This may be met by adjusting the lift in question of the lift device corresponding to one slat width to the largest pitch so that the slightest ditferences in pitch are met and the slat is always sufficiently lifted.
  • the guide plate 13 movable along the frame (FIGS. 3 and 4) comprises at its top two upwardly projecting legs 18 which extend on either side of the pulley 12 and when being moved take along said pulley.
  • a fixing screw 13' By means of a fixing screw 13' the guide plate 13 may be fixed at any point along the frame 1.
  • U-shaped guides 19 for the slats 17 beside the pins 16.
  • the guides 19 are connected to the guide plate 13 and are adjusted together with the adjusting of the guide plate 13.
  • the guides 19 have in the legs of the U at some distance above the bottom side resilient stops 20. If a slat is moved upwards by means of the shaft 4 up to the stops 20, then said stops are pushed inwards into the legs of the U and after the passing of the slat they spring back so that they can support said slat. Each following slat is likewise pressed past the stops 20 so that finally the entire stack of slats rests on the stops 20.
  • the guides 19 are detachably fastened to the frame 1 or they are fixedly secured to a separate frame which is movable relative to frame 1 and they may be replaced by other similar guides with a different distance between the legs, depending on the slat width which will be used, for example 25, or 50 mm. It is also possible to make one of the legs of each guide adjustable relative to the other leg, for example slidable and fixable, for instance with an adjusting screw, and to provide openings or recesses in the part of the body of the U-shaped guide which is connected with the fixed guide leg, with which openings the adjusting screw engages for fixing the correct position of the adjustable leg.
  • a ladder 21 (FIGURE 4) at each lift unit such that the first slat of a stack, when being fed into the machine, is positioned between two cross connections 22 situated at or near one end of the ladder 21.
  • the ladder 21 may be released and then depends substantially vertically from the uppermost of the cross connections in question.
  • the slat When the slat is lifted it also causes the ladder 21 to be lifted by means of said uppermost cross connection 22.
  • the distance along which the lift is effected therefore the distance between the pins 16 and the stops 20, is at least equal to the distance between two successive cross-connections 22 of the ladder 21.
  • a next slat is likewise pushed between two successive cross connections etc.
  • FIGS. 3 and 4 show a ladder tensioning means 23 for ladder tape, consisting of a pair of tensioning elements 24.
  • the tensioning elements 24 are U-shaped and made from sheet metal. Near one end of each element 24 a pivot shaft 25 is arranged through the legs of the U-shaped element on which the element 24 is rotatably mounted and which shaft 25 is fixedly secured to a plate connected to the frame 1.
  • both elements 24 situated nearest to the frame 1 are each fixedly connected with a gear segment 26, both gear segments being in engagement with each other after elements 24 have been mounted to the frame.
  • One of the segments 26 is connected at some distance from the pivot shaft 25 to one end of a tensioning spring 27 the other end of which is secured to the frame 1.
  • a U-shaped guide 29 Centrally relative to the unit 23 there is provided at the lower side of the frame 1 a U-shaped guide 29 having two legs projecting from the frame 1, the ladder tape 21 depending between these legs.
  • Each element 24 is provided with one or more pairs of slots 30 for guiding the sides of ladder in question in the body of the U, said slots extending from the free end of the element in the longitudinal direction of the element.
  • the ladder tape unit is provided on the frame 1 such that it may be removed out of the operative position and that it may be replaced by a ladder cord unit (to be described later on) if Venetian blinds must be equipped with ladder cord instead of ladder tape.
  • Both the ladder tape and ladder cord unit are placed on centering pins and on a bolt 81, all of them secured to the plate 13, after which on the bolt 81 a milled nut 82 is screwed (see also FIG. 7).
  • Venetian blinds with different slat widths may be manufactured with one and the same ladder tape or ladder cord unit, since for this purpose only a different lift of the lift units must be set, and also a tape or a cord with a different cross connection distance may be used. It is also possible to mount one tensioning unit for ladder tape and one tensioning unit for ladder cord on an indexable plate such that the units may be rotated according to choice into the operative position.
  • the above-described ladder tape tensioning means 23 operates as follows.
  • each side tape of the ladder tape 21, depending from slats already supported by the stops 20, projects into two slots 30 of the elements 24, said slots facing each other.
  • FIGS. 5 and 6 A first embodiment thereof is shown in FIGS. 5 and 6.
  • This unit consists of a plate 31 carrying at the lower side a holder 33 fixedly connected therewith in which two rollers 34, for example of a synthetic material, are rotatably mounted by means of journals 35.
  • the journals 35 of one of the rollers project into slot-like openings 36 in the holder 33, and the journals of the rollers are interconnected on either side of the holder by the tensioning spring 37, said springs urging the rollers towards each other.
  • a spacer 39 consisting of a plate 41 pivotally connected about a shaft 40 to the plate 31, pairs of slots 42 being provided at the free end for accommodating the side cord of the ladder cord 38.
  • the spacer 39 is biased under the influence of a tensioning spring 43 towards a position approximately parallel to the plane through the centre lines of the rollers 34, part of the free end of the plate 41 resting on a cross connection 44 of the ladder cord 38.
  • peripheral grooves for correctly guiding and spreading the side cords.
  • the ladder cord tensioning unit too is provided on the frame 1 such that it may be removed, for example interchanged, out of the operative position and may be replaced by a ladder tape tensioning unit. If one wishes to use ladder cord for different slat widths, of which ladder cord not only the mutual distance but also the length of the cross connections is different, therefore the widths of the ladder cord, this is possible in a simple way by using the different pairs of slots 42 in the swing plate 41 as well as different pairs of slots in the rollers 34.
  • the operation of the ladder cord tensioning unit corresponds with the operation of the above-described ladder tape tensioning unit.
  • each lifting device carries a column 53 with a guide bar 54 along which a holder 55 is vertically slidable, said holder carrying at the lower side a vertical threading needle 56.
  • the threading needle 56 has at its lower end an eyelet 57, through which a lift cord 58 may be threaded.
  • the slats of the stack are provided with an aperture, said apertures forming a vertical channel in the stacked package.
  • the threading needle 56 projects through this channel.
  • the lift cords of the ladder tape are threaded through slots in the centre of the cross tapes which are mostly provided double or in staggered position.
  • the carrier means i.e. the ladder tape or ladder cord
  • the lift cords of the ladder tape are threaded through slots in the centre of the cross tapes which are mostly provided double or in staggered position.
  • the invention also comprises a provision for automatically carrying out this weaving, which is explained with reference to FIGS. 5, 6 and 7.
  • this arrangement care is taken that the lift cord is alternatively situated to the left and to the right of the successive cross connections. This is accomplished by a rocking movement of the ladder cord tensioning unit.
  • This unit is secured to a plate 31 construction as a rocking element, said plate being pivotally mounted about a journal 32 of a supporting plate 66, said supporting plate being secured to the frame.
  • a pin 60 is secured and on the lift plate 14 a fixed guide 61 is provided consisting of a vertical slot downwardly widening into oppositely inclined portions 67 and underneath a triangular tipping guide piece 62 adapted to tip about a pivot pin 63 situated near the top angle of the tipping guide piece 62 and secured to the lift plate 14.
  • the lowest position of the lift plate 14 is selected as a starting point, in which position the pin 60 is situated in the top of the vertical slot of the fixed guide 61. It is thereby assumed that the tipping guide piece 62 has been tipped to the right.
  • the tipping piece now comes with its left erect side into contact with the pin 60 which consequently is pushed away towards the left.
  • the ladder cord tensioning unit and consequently the ladder cord are moved towards the left so that the next cross connection of this ladder cord assumes a position to the left of the threading needle 56 during the upwardly directed movement of said ladder cord relative to said threading needle.
  • the tipping piece 62 is tipped to the left by the pressure exerted by the pin on the lower part of the tipping piece, the left erect side assuming an almost vertical position. Meanwhile the relative cross connection of the ladder cord has passed the end of the threading needle to the left.
  • the tipping piece moves along downwards in the position turned to the left. This is effected at such a speed that the pin 60 does not get a chance to push back the portion of the tipping piece situated above the pivot pin 63. Consequently the tipping piece remains in the position turned to the left and the pin 60 comes into contact with the left in clined portion 67 of the fixed guide 61 so that at a continued downward movement of the lift plate 14 the pin 60 is automatically guided in the vertical slot.
  • any slat as regards both the type (slat width, pitch of the slats, ladder tape or ladder cord) and dimensions (length and height) of the slat.
  • An assembling machine for the manufacture of at least partly finished stacks of slats for Venetian blinds having slats carried by ladder means said machine comprising: a lifting device actuated by a driving mechanism for periodically raising at least one slat; means for tensioning and guiding said ladder means; guide means for guiding the slats when being fed into the machine; said tensioning and guiding means comprising a device adaptable for applying according to choice either ladder cords or ladder tapes interchangeably, the device comprising at least one moveable frame adapted to be moved and fixed relative to the stationary frame of the machine, the moveable frame being provided with fastening means for co-operating both with fastening means of the ladder cord tensioning and guiding mechanism and with fastening means of the ladder tape tensioning and guiding mechanism.
  • An assembling machine for the manufacture of at least partly finished stacks of slats for Venetian blinds with slats carried by ladder means, said machine comprising a lifting device actuated by a driving mechanism for pcriodically raising at least one of the slats and the ladder means; tensioning and guide means for the ladder means, guide means for guiding the slats when being fed into the machine, said assembling machine being also provided with setting and regulating means for applying according to choice ladder cords or ladder tapes and the like of different dimensions and pitch of cross connections to assemble slats of different widths, preferably of slat widths of 25, 35 or 50 mm., said setting and regulating means comprising a setting and regulating mechanism which co-operates with the driving mechanism of the lifting device for adjusting the lift according to choice, as well as that of the operating means for said mechanism.
  • a machine according to claim 2 in which the setting and regulating mechanism and the operating means are set at a number of fixed lifts, corresponding to ladder cords or tapes for Venetian blinds having a slat width of 25, 35 or 50 mm.
  • An assembling machine for the manufacture of at least partly finished stacks of slats for Venetian blinds with slats and the like carried by ladder means, said machine comprising a lifting device actuated by a driving mechanism for periodically raising at least one of the slats and the ladder means, said driving mechanism consisting of a motor which is connected via a disconnectable clutch with the shaft of the lifting device operating a number of lift units, and a setting and regulating mechanism being connected with the disconnecting mech anism of the clutch for regulating the lift by disconnecting the clutch, tensioning and guide means for the ladder means, guide means for guiding the slats when being fed into the machine, said assembling machine being also provided with setting and regulating means for applying according to choice ladder cords and the like or ladder tapes and the like of different dimensions, width and pitch of the cross connections for assemblies of slats of different slat widths, preferably 25, 35 or 50 mm., said setting and regulating means comprising a mechanism which co-operates with
  • An assembling machine for the manufacture of at least partly finished stacks of slats for Venetian blinds With slats and the like carried by ladder means, said machine comprising a lifting device actuated by a driving mechanism for periodically raising at least one of the slats and the ladder means; tensioning and guide means for the ladder means, guide means for guiding the slats when being fed into the machine, said assembling machine being also provided with setting and regulating means for applying according to choice ladder cords and the like or ladder tapes and the like of different dimen sions and pitch of the cross connections for the assembling of slats of different slat width, preferably of slat widths of 25, 35 or 50 mm.
  • said means comprising a mechanism which co-operates with the driving mechanism of the lifting device for adjusting the lift according to choice, as well as that of the operating means for said mechanism, said setting and regulating mechanism comprising a number of cam means provided on the shaft of the lifting device each of them corresponding with a
  • An assembling machine for the manufacture of at least partly finished stacks of slats for Venetian blinds with slats and the like carried by ladder means comprising a lifting device actuated by a driving mechanism for periodically raising at least one of the slats and the ladder means; tensioning and guide means for the ladder means, guide means for guiding the slats when being fed into the machine, said assembling machine being also provided with means for applying according to choice ladder cords and the like or ladder tapes and the like of different dimensions, width and pitch of the cross connections for the assembling of slats of different slat width, said means for applying comprising differently spaced grooves, slots, guiding cams and the like provided on the tensioning and guide means for the ladder means.
  • An assembling machine for the manufacture of at least partly finished stacks of slats for Venetian blinds with slats and the like carried by ladder means, said machine comprising a lifting device actuated by a driving mechanism for periodically raising at least one of the slats and the ladder means; tensioning and guide means for the ladder means and one or more guide means for guiding slats of different widths when being fed into the machine and being lifted during operation of the machine, the guide means for the slats comprising a guide having upright legs and fastened to a frame, said guide ibeing provided with a mechanism for adjusting the mutual distance between the legs.
  • An assemblying machine for the manufacture of at least partly finished stacks of slats for Venetian blinds with slats and the like carried by ladder means, said machine comprising a lifting device actuated by a driving mechanism for periodically raising at least one of the slats and the ladder means; tensioning and guide means for the ladder means and one or more guide means for guiding slats of different widths when being fed into the machine and being lifted during operation of the machine,
  • the guide means comprising different guides provided 2,635,333 4/1953 Vodra 29-24.5 with upright legs, the distance between the legs differing 2,893,106 7/1959 Rosenbaum 29-245 for each guide, said guides being adapted to be brought into the operative position according to choice.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
US698932A 1967-01-23 1968-01-18 Universal assembling machine for the manufacture of stacks of slats for venetian blinds Expired - Lifetime US3521337A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6701043A NL6701043A (de) 1967-01-23 1967-01-23

Publications (1)

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US3521337A true US3521337A (en) 1970-07-21

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US698932A Expired - Lifetime US3521337A (en) 1967-01-23 1968-01-18 Universal assembling machine for the manufacture of stacks of slats for venetian blinds

Country Status (7)

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US (1) US3521337A (de)
DE (1) DE1683048A1 (de)
FR (1) FR1551738A (de)
GB (1) GB1200545A (de)
NL (1) NL6701043A (de)
NO (1) NO122340B (de)
SE (1) SE344609B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073044A (en) * 1975-08-08 1978-02-14 Hunter Douglas International N.V. Apparatus for assembling louvred blinds
US4514886A (en) * 1982-07-23 1985-05-07 Hunter Douglas International N.V. Unit for positioning a venetian blind ladder and for guiding the slats of the blind thereonto
US4543699A (en) * 1983-11-14 1985-10-01 Hunter Douglas Industries B.V. Apparatus for assembling slatted venetian blinds
US5127138A (en) * 1987-06-18 1992-07-07 Hunter Douglas International N.V. Method and apparatus for mechanically assembling a venetian blind

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4516300A (en) * 1983-08-01 1985-05-14 Hunter Douglas International N.V. Apparatus and a method for assembling slats of a venetian blind
CN106193972B (zh) * 2016-08-27 2017-10-24 汕头市六岳窗饰有限公司 一种百叶帘的非金属薄款叶片的穿棒装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489467A (en) * 1946-03-14 1949-11-29 Glenn L Sherwood Apparatus for assembling venetian blinds
US2532294A (en) * 1949-02-10 1950-12-05 Robert D Edwards Machine for assembling venetian blinds
US2635333A (en) * 1949-11-17 1953-04-21 John William Driver Automatic venetian blind assembling machine
US2893106A (en) * 1952-04-03 1959-07-07 Harry S Rosenbaum Apparatus for assembling venetian blinds

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489467A (en) * 1946-03-14 1949-11-29 Glenn L Sherwood Apparatus for assembling venetian blinds
US2532294A (en) * 1949-02-10 1950-12-05 Robert D Edwards Machine for assembling venetian blinds
US2635333A (en) * 1949-11-17 1953-04-21 John William Driver Automatic venetian blind assembling machine
US2893106A (en) * 1952-04-03 1959-07-07 Harry S Rosenbaum Apparatus for assembling venetian blinds

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073044A (en) * 1975-08-08 1978-02-14 Hunter Douglas International N.V. Apparatus for assembling louvred blinds
US4514886A (en) * 1982-07-23 1985-05-07 Hunter Douglas International N.V. Unit for positioning a venetian blind ladder and for guiding the slats of the blind thereonto
US4543699A (en) * 1983-11-14 1985-10-01 Hunter Douglas Industries B.V. Apparatus for assembling slatted venetian blinds
US5127138A (en) * 1987-06-18 1992-07-07 Hunter Douglas International N.V. Method and apparatus for mechanically assembling a venetian blind

Also Published As

Publication number Publication date
GB1200545A (en) 1970-07-29
DE1683048A1 (de) 1970-05-06
NL6701043A (de) 1968-07-24
SE344609B (de) 1972-04-24
NO122340B (de) 1971-06-14
FR1551738A (de) 1968-12-27

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