Old Hy-Hoe

Not the best picture I know. I've never seen a Hy-Hoe in person before only ever seen pictures on here, I'm guessing there aren't very many left. Wish I could've taken a better look at her. This picture was taken today, In Langley B.C. Can anyone tell me anything about this machine? I understand it is American made. what size/weight class is it in? what year roughly?

Old Hy-Hoe