Steiger Tractor Inc.

Gordon A Irwin

Air conditioning apparatus for a tractor cab in which filter and air inlets are disposed in a portion of the roof projecting rearwardly beyond the cab, the air inlet being downwardly disposed so that foreign matter accumulating in the exterior of the filter is free to fall off of the filter and out through the air inlet. The heat exchange means for removing heat from the air is located behind and beneath the cab seat with the air outlet opening into the cab so as to direct cool air into the cab behind and beneath the operator. The cab may have one or more rear corner posts which are hollow and the air passing through the filter is passed through at least one of these hollow corner posts to the heat exchange means. The filter preferably extends transversely with respect to the cab. Two filters may be employed, these filters being spaced apart with a booster fan located between the filters and directing air passing through the filters downwardly to the heat exchange device. Preferably the main air circulating means is located adjacent the heat exchange means. The filter may be of the cylindrical type, the air passing from outside of the cylindrical surface into the cylindrical interior of the filter. With the arrangement, the dirt not only tends to drop downwardly through the air inlet because of the vibrations occurring during normal operation of the tractor but it also tends to be forced off of the surface of the filter each time that the cab door is closed due to the pressure build-up within the cab being transmitted to the interior of the filter to force air through the filter in a reverse direction.

Air conditioning apparatus for tractor cab

A self-propelled vehicle having an enclosed operator cab in which the air intake pipe and the exhaust stack are mounted diagonally in line with one of the front corner posts of the cab so that although both the air intake pipe and the exhaust stack are close to the engine, they present a minimum of obstruction to the view of the operator. The portions of the intake pipe and exhaust stack visible to the operator are painted in the same dark color as the cab, in contrast to a lighter color employed on the rest of the vehicle. The vehicle may be provided with a hood which extends inwardly of the intake pipe and exhaust stack and is hinged to the vehicle at the front so that it can be tilted forward. The vehicle may be of the type which is articulated and in which the rear of the cab overhangs the rear section of the vehicle.

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Harwood, ND, United States of America

Gordon A Irwin