The partnership ended in 1878, when Boeh was elected assistant city civil engineer in the Bureau of Sewers. Joseph Earnshaw began practicing surveying and civil engineering on his own once again. The first reference to him surveying without being under his father or brother is found in the 1859 Cincinnati Williams Directory. 18By the 1870s, the population of Cincinnati was starting to migrate out of the citys basin to the surrounding hillsides. Traveling back and forth to the city was a difficult task that could only be undertaken by the more prosperous citizens of Cincinnati who had their own personal horses and carriages. With the establishment of the citys five inclines, more people and goods could reach the hilltop suburbs. 19The inclines popularity created a need for a more efficient method of incline transportation technology. Joseph Earnshaw stepped in with his suggested improvements to the incline carriages, streamlining the system and earning the citys gratitude. In his patent letter, Joseph stated by these improves I am better enabled to subserve the necessities and wants of travel in a simple and convenient fashion.Earnshaws InclineRed esign&Patent,8751Joseph Earnshaw applied for a patent in 1875 for his invention of a certain new and useful Improvements in Carriages for Inclined Planes by improving three components. The first addressed the need for an additional compartment: one for passengers and another for the conveyance of vehicles, persons on horseback, and livestock. He designed a separate compartment which could be added to the track, accommodating the passengers, separate from cargo and goods but still on the same truck. For the second component of the patent, Earnshaw redesigned the door and a track within the vehicle compartment to more effectively accomplish the purpose of its construction. Finally, Earnshaw redesigned a compartment ordinarily used for the conveyance of vehicles and the like [which] can, when desired, be immediately converted into a compartment for the use of passengers. In his patent letter, Joseph stated: By these improves I am better enabled to subserve the necessities and wants of travel in a simple and convenient fashion.Source: Earnshaw, Joseph. 1875, Improvements in cars for inclined planes. U.S. Patent 162,358, filed February 3, 1875, and issued April 20, 187516