Hardware for closure

Hardware (6, 7) for a closure (3) of a window, or door, which closure is lockable in a position parallel to a fixed frame and in this position is horizontally shiftable, the hardware having lower supporting arms (10) and upper swing arms, in which the lower supporting arms (10) are mounted by a first pivot pin (14) to a lower transverse bar of the closure in a bearing block (15) and which are also each pivotally mounted on a traveling carriage (12) by a second bearing pivot pin (11), in which a releasable blocking device is provided for at least one of the lower supporting arms (10) when the closure is in said parallel position, which blocking device can be brought into and out of blocking engagement relative to the supporting arm (10) in conjunction with an end motion of the closure (3) as it is shifted to a closed position

• characterized by the fact that:
• said traveling carriages (12), along with each associated supporting arm (10) and each associated bearing block (15) on the closure side, from assemblies which are mirror images of one another, and are connectable for forced movement relative to one another by a differential coupling apparatus (16),
• by the fact that:
• each traveling carriage (12) carries a thrust piece (20) to which is articulated a guide rod (17) by a pivot pin (19), the rod being connected by a swivel (18) to the supporting arm (10), so that the sliding path of the thrust piece (20) and of the guide rod (17) relative to the traveling carriage (12) corresponds to the component of displacement (35) (in the same direction) of the first pivot pin (14) of the supporting arm (10) swinging about the closure (3) on its second bearing pivot pin (11),
• and by the fact that:
• the thrust pieces (20) of both carriages are coupled with one another by means of an intermediate piece (20a) which can be adjusted in length.