Rubuta ci gaba don wannan sakin layi - Hammer ya tattara kwararan fitila daga ko'ina cikin duniya wanda ake kira "Tarihin Fasaha" kuma ya nuna shi a lokuta daban-daban a cikin nunin lantarki da nune-nunen. Ya fara nuna shi a 1882 a International Electrical Exposition a Crystal Palace a London kuma an ba shi lambar azurfa don gabatarwa. Lokacin da ya gabatar da tarin sa a St. Louis World's Fair na 1904
an ba shi lambar yabo ta farko.