Abstract: A mounting jig for a vehicle door, the jig includes a first support having means for adjustably fastening it to a vehicle body in the vicinity of the door opening; a second support having fastening means for fastening to the vehicle door; connection arms for interconnecting the first and second supports, which arms are hinged to each of said supports, and their trace, in a plane perpendicular to the plane of the door opening, co-operates with the trace, in the same plane, of said supports, to form a deformable quadrilateral; a weight arm, mounted to move at least in translation along a vertical axis in guide means carried by the stationary support, between a low first position and at least one second position that is higher than said low position; at least one operating member for operating an indexing member for indexing the position of the second support relative to the first support, the operating member being connected to the weight shaft; and a raising lever, for acting against the effect of gravity, to

Abstract: A mounting jig for a vehicle door, the jig includes a first support having means for adjustably fastening it to a vehicle body in the vicinity of the door opening; a second support having fastening means for fastening to the vehicle door; connection arms for interconnecting the first and second supports, which arms are hinged to each of said supports, and their trace, in a plane perpendicular to the plane of the door opening, cooperates with the trace, in the same plane, of said supports, to form a deformable quadrilateral; a weight arm, mounted to move at least in translation along a vertical axis in guide means carried by the stationary support, between a low first position and at least one second position that is higher than said low position; at least one operating member for operating an indexing member for indexing the position of the second support relative to the first support, the operating member being connected to the weight shaft; and a raising lever, for acting against the effect of gravity, to r

Abstract: An assembly jig includes a first frame adjustably fastened to a vehicle body in the vicinity of a door opening, a second frame with supporting the door of the vehicle, and link arms between the first and second frames that are hinged to the first and second frames so as to form a deformable quadrilateral in association therewith. Hinges between the arms and the frames include at least one ball joint arranged between a carrier element secured to one of the frames or arms and a carried element secured to one of the arms or frames, carrying being relative to the effect of gravity, wherein at least one of the carrier and carried ball joint elements is secured to the corresponding arm or frame in such a manner that the position in three-dimensional space of the center of the ball joint is adjustable in three spatial directions.

Abstract: Access to the top of a caged ladder (2, 3) is barred by the device of the invention which comprises a door panel (6) and a closure member (10) both hinged about respective vertical axes (7b, 12), and interconnected like a pair of compasses by a hinge piece (11) and a lever (14) which engages in a slot (13) of the hinge piece.