<prompt> Bhala okuqhubekayo kwalesi sigaba - Ngo-1908 lomkhumbi waphawulwa ephephabhukwini elithi The American Marine Engineer njengohlobo lomkhumbi oludala kunalo lonke olwenziwe ngensimbi ngaleso sikhathi futhi oluthakazelisa onjiniyela ngenxa yobudala bomkhumbi. Lezi zinjini ezimbili zaziyizinjini ezincane ezinenkinga yokushaya okwakuyizinto zokuqala futhi zisebenza kahle ngo - 1908. Amaqoqo amathathu okuqala ama-boiler ayengohlobo lwe-return flue olwadonsa iminyaka engamashumi amahlanu ngaphambi kokuba ekugcineni athathelwe indawo ngohlobo lwamashubhu okubuyela emuva. Umfutho wokusebenza wawuphansi, kwanele ukushayela izinjini nge-20 rpm, ngamapayipi egumbi lezinjini enethusi elijiyile elixhuma ngokuhlanganiswa kwe-brass flange. Lapho, cishe ngo - 1905, umkhumbi ekugcineni ushintsha usuka ekukhanyeni kukaphethiloli uya kukagesi, kwadingeka kwakhiwe injini ekhethekile ye - dynamo ukuze isebenze ngesivunguvungu esinengcindezi ephansi. Umusi wawubuye usetshenziswe esimisweni esiyingqayizivele sokuxosha abagibeli ngamanzi ashisayo aqonde ngqo kubhayela. Ukusetshenziswa kwamalahle ngaphambi kwezinguquko zakamuva kwakungamathani amabili ngehora futhi ngemva kwezinguquko kwakungaphansi kwesigamu sethani ngehora. Lo mkhumbi wawunezikebhe ezimbili zokuwudubula. Lo mkhumbi wawungakaze uhambe ngisho namafindo ayishumi kwaze kwaba yilapho uthunyelwa usuka ethekwini laseCleveland uya eBuffalo ukuze kuvinjelwe izibhelu ngokubulawa kukaMongameli uWilliam McKinley  <response>: Ngo-September 6, 1901 futhi, ngezokuphepha ezinesisindo, wenza cishe amafindo ayishumi nane nge-30 rpm ngesinye isikhathi. 