unknown carrier

[Ledsel]

Does anyone know what year carrier had a rounded top engine hood? My father had one that he made a front end loader out of. I think he said one time that it was a 1938 model but I can't remember. I'm just wondering because I haven't seen one on this forum. They all seem to have the flat top over the engine. The rest of the carrier was the same as all the others, as far as I could tell as it was cut down already when I could remember. P.S. the hood was made of sheet metal. Sorry no pictures.