Daihachishu Seiki Kogyo (Nagoya), 1950 ?
大八州精機工業
Daihachishu Seiki Kogyo is listed in several places, including the Japanese language wikipedia site. Supposedly they made a machine called the Oyasima (オーヤシマ号) however I have not found any other information as to whether it was a clip on, a scooter or an actual motorcycle.