Terakawa Pump Manufacturing Co., Ltd, Tokyo, 1908
English language information about early Japanese motorcycle manufacturers is difficult to find, however Terakawa Pump is listed in the Japanese language wikipedia site, as well as being mentioned briefly on a site called the 'History Research Institute of Ninohe". Evidently they made a bicycle frame and fitted an imported European engine (possibly a Triumph engine ?) to it. I have no additional data at this time.