Openable dual windshield arrangement for construction vehicles

A dual windshield arrangement, mounted on a main frame of an operator's cab, comprising

• a sub-frame having an upper end thereof pivotally mounted in a fixed position on said main frame solely for swinging movements between closed and opened positions,
• an upper windshield mounted on said sub-frame, and
• a lower windshield slidably mounted on said main frame and on said sub-frame for sliding movements below or in overlying relationship relative to said upper windshield whereby said upper windshield can be solely opened, said lower windshield can be solely opened or said upper and lower windshields can be opened simultaneously, said lower windshield being slidably mounted in a track means defined in normal co-linear relationship on said main frame and on said sub-frame when said sub-frame and upper windshield are maintained in a normally closed position on said main frame for permitting sequential upward movement of said lower windshield between (1) a lowermost first position maintaining said lower windshield in non-overlapping relationship relative to said upper windshield for permitting pivoting of said sub-frame and said upper windshield inwardly into said operator's cab, (2) a second position maintaining said lower windshield in partial overlapping relationship relative to said upper windshield for preventing said sub-frame and said upper windshield from pivoting inwardly into said operator's cab, (3) a third position maintaining said lower windshield in further overlapping relationship relative to said upper windshield for defining an opening between a lower edge of said lower windshield and said main frame, and (4) an uppermost fourth position maintaining said lower windshield in substantial overlying relationship relative to said upper windshield for permitting said sub-frame and said upper and lower windshields to pivot inwardly into said operator's unit.

A dual windshield arrangement, mounted on a main frame of an operator's cab, comprising

• a sub-frame having an upper end thereof pivotally mounted in a fixed position on said main frame solely for swinging movements between closed and opened positions,
• an upper windshield mounted on said sub-frame,
• a lower windshield slidably mounted on said main frame and on said sub-frame for sliding movements below or in overlying relationship relative to said upper windshield whereby said upper windshield can be solely opened, said lower windshield can be solely opened or said upper and lower windshields can be opened simultaneously, and
• latch means releasably attaching said sub-frame to said main frame comprising a latch member pivotally mounted on said sub-frame, a pin secured on a side rail of said main frame and normally engaged with said latch member when said sub-frame and said upper windshield are maintained in their normally closed position on said operator's cab and spring means normally biasing said latch member into latched engagement with said pin.