Abstract: A door latch mechanism (10) comprises a pin (11) having an elongate axis, and releasable jaw means (12) comprising a pair of jaw elements (18) which engage the pin therebetween to latch a door (16) in a closed position to a door frame (14). The pin is mounted on the door or the door frame with biasing means, such as a pair of springs, so as to allow the pin to move substantially linearly in a direction perpendicular to the elongate axis of the pin and substantially parallel to the plane of the door when in the closed position. The movement of the pin (11) allowed by the biasing means caters for any vertical displacement of the door caused by worn hinges for example without any forced distortion of the door. The invention is of particular benefit to doors having no frame and which are susceptible to flexing and come with the associated risk of structural failure.

Abstract: A door latch mechanism (10) comprises a pin (11) having an elongate axis, and releasable jaw means (12) comprising a pair of jaw elements (18) which engage the pin therebetween to latch a door (16) in a closed position to a door frame (14). The pin is mounted on the door or the door frame with biasing means, such as a pair of springs, so as to allow the pin to move substantially linearly in a direction perpendicular to the elongate axis of the pin and substantially parallel to the plane of the door when in the closed position. The movement of the pin (11) allowed by the biasing means caters for any vertical displacement of the door caused by worn hinges for example without any forced distortion of the door. The invention is of particular benefit to doors having no frame and which are susceptible to flexing and come with the associated risk of structural failure.

Abstract: A tractor cab roof (10) has a first area of glass (11) adjacent a front edge 912) of the roof and a second area of glass (13) adjacent a rear edge (14) of the roof, and an air conditioning/ventilation unit (15) is located between the two areas of glass. One or both areas of glass (11, 13) can be opened for further ventilation and are provided with gas struts 22, 23 to support the glass in an open position. The air conditioning/ventilation unit (15) may be located centrally in a transverse sense relative to the cab roof or alternatively the air conditioning/ventilation unit (15) can be split into two parts which are located towards the sides (18) of the cab roof to minimise the effect of the unit on the visibility through the two glass areas (11,13).