<prompt> Qedela umusho olandelayo: Ngo-1908 lomkhumbi waphawulwa ephephabhukwini elithi The American Marine Engineer njengohlobo lomkhumbi oludala kunayo yonke eyayinomzimba wensimbi ngaleso sikhathi futhi owawujabulisa 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 wenze ngisho namafindo ayishumi kuze kube yilapho uthunyelwa esuka ethekwini eCleveland eya eBuffalo ukuvimbela izibhelu emfuleni  <response>: ukubulawa kukaMongameli uWilliam McKinley ngo-September 6, 1901 futhi, ngokuphepha okunesisindo, wenza cishe amafindo ayishumi nane nge-30 rpm ngesinye isikhathi. 