Earlier, he was overseeing a factory for making bedframes, which suffered persistent problems with moving heavy loads around the warehouse.
Four years after installing his first public model in E.V. Haughwout's establishment, he invented an accompanying steam pump which greatly improved the device. Earlier, he was overseeing a factory for making bedframes, which suffered persistent problems with moving heavy loads around the warehouse. He solved the issue with a device that he demonstrated by severing a rope at the Crystal Palace, his "safety hoist." For 10 points, name this man who thus invented the first practical passenger elevator and lent his name to a major manufacturer of such devices.
Four years after installing his first public model in E.V. Haughwout's establishment, he invented an accompanying steam pump which greatly improved the device.
Elisha Graves {Otis}