摘要:
An operating mechanism is provided which can raise, lower and tilt slats of a venetian blind, particularly an outside blind mounted externally of a building, and which comprises: a support body for rotatably receiving a rotatable drive shaft; a releasable clutch mechanism having at least a first element mounted for rotation by the drive shaft and a second element releasably engaged with the first element for moving the slats between opposite first and second angular positions; means defining the first and second angular positions; arresting means on the support body adapted to cooperate with the second element for establishing the opposite first and second angular positions; a retractable stop engageable with the second element to arrest the second element in an intermediate position between the opposite first and second positions and a lost motion mechanism interposed between the drive shaft and the retractable stop for engaging the retractable stop with the second element only after a predetermined number of revolutions of the drive shaft.
摘要:
An operating mechanism is provided which can raise, lower and tilt slats of a venetian blind, particularly an outside blind mounted externally of a building, and which comprises: a support body for rotatably receiving a rotatable drive shaft; a releasable clutch mechanism having at least a first element mounted for rotation by the drive shaft and a second element releasably engaged with the first element for moving the slats between opposite first and second angular positions; means defining the first and second angular positions; arresting means on the support body adapted to cooperate with the second element for establishing the opposite first and second angular positions; a retractable stop engageable with the second element to arrest the second element in an intermediate position between the opposite first and second positions and a lost motion mechanism interposed between the drive shaft and the retractable stop for engaging the retractable stop with the second element only after a predetermined number of revolutions of the drive shaft.
摘要:
A vertical louvre blind in which a plurality of travellers (30) are mounted for movement along a headrail (10) each having a vertically extending vane depending therefrom, whereby the vanes hang downwardly therefrom and a conventional tilting mechanism on each traveller is provided for tilting all of the vanes simultaneously. The travellers have wheels (34) thereon moveable along tracks on the headrail. A controllable transmission cord (76) is connected to one of the travellers for moving it along the headrail and spacers (90,91) connect adjacent travellers to one another, whereby movement of the one traveller (60) in one direction will pull the next and subsequent traveller in one direction when they are spaced from adjacent travellers by the length of the spacer (90,91). The travellers bodies are of identical construction and each include a pair of arms (36,37) inclined towards one another and joined by a bridge (38) engaging in an undercut groove (20) in the headrail to prevent skewing.
摘要:
A vertical louvre blind in which a plurality of travellers (30) are mounted for movement along a headrail (10) each having a vertically extending vane depending therefrom, whereby the vanes hang downwardly therefrom and a conventional tilting mechanism on each traveller is provided for tilting all of the vanes simultaneously. The travellers have wheels (34) thereon moveable along tracks on the headrail. A controllable transmission cord (76) is connected to one of the travellers for moving it along the headrail and spacers (90,91) connect adjacent travellers to one another, whereby movement of the one traveller (60) in one direction will pull the next and subsequent traveller in one direction when they are spaced from adjacent travellers by the length of the spacer (90,91). The travellers bodies are of identical construction and each include a pair of arms (36,37) inclined towards one another and joined by a bridge (38) engaging in an undercut groove (20) in the headrail to prevent skewing.
摘要:
An operating mechanism for a blind or shielding device having angularly adjustable and retractable slats 12, said mechanism comprising a first driven element 27 for pivotally adjusting the angular orientation of the slats and a second driven element 30 for transversely moving the slats towards and away from the retracted position, a common actuating member 22 for driving said first and second driven elements, a coupling device 24 directly coupling said first driven element to said common actuating member, a final engagement and lost motion mechanism 28,30 for releasibly engaging said common actuating member to said second driven element and allowing entraining of said second driven element after a predetermined number of revolutions of said actuating member neither of two different rotational senses, the final engagement associated with said lost motion mechanism in each rotational sense inducing a reactive force in an axial direction, said reactive force assisting in declutching of said coupling device.
摘要:
A tape spacer for securing the ladder tape of a venetian blind slat of a given width. It includes a body (10) having a length slightly greater than the width of the slat. A single hook (16) is provided on one end and two laterally spaced hooks (20 and 24) on the other end. The body is angled to position these loosely adjacent the edges and the handle (28) is then operated to spring the third hook (24) over the other edge of the slat.
摘要:
A retractable screen or blind of the type which is guided at its edges and which includes a latch mechanism. In one construction this mechanism includes a and a first part 16 secured to the end bar of the screen and is provided with a locking element 32. The locking element engages against a ramp 38 part of a catch member on a fixed second part 18. The locking element 32 slides down the ramp and then moves to the space below a locking surface 42 holds the screen in the desired position. Further downward and rearward movement of the locking element 32 enables it to pass behind a stop 46 through a gap 54 therebelow and then into a return passage which allows the blind to retract. The upper part of the ramp 38 can be arranged to flex or move out of the way to allow passage of the locking element 32. An alternative structure mounts a locking element on the lateral guide and a catch member is provided on the end bar to cooperate therewith.
摘要:
A bracket (6) for releasably securing a channel section blind headrail (10) to a wall or ceiling, said channel section blind headrail including a web (11) and front and rear upwardly extending flanges (12, 13), each having an inturned rim (14, 15) at its upper free edge, said bracket including a main body (18) securable to a wall or ceiling, spaced, forwardly extending portions (26, 28) on said body, recesses (30, 32) on the forward end of each said portion engageable by the inturned rim of the forward flange of the headrail, a separate member (38) capable of limited horizontal movement relative to said main body, at least one lug (47, 49) on said separate member engageable under said rim on the rear flange of the headrail and a tongue (66) on the forward end of said member, positioned to overlie the rim of the front flange and extend forwardly thereof sufficiently to enable the tongue to be forced forward to disengage the lugs from the rear rim said separate member provided with resilient means to urge it towards a rearward position to engage said lugs under the rim of the rear flange, and being movable forwardly, against the action of said resilient means, to disengage the lugs from said rim to allow said headrail to be released.