Such designs violated the conventions by which the machinists plied their trade.
Some craft machinists work in the maintenance side, for example, for electricity generation companies in power stations.
The principal industries are the manufacture of small arms (by the Colt's Patent Fire-Arms Manufacturing Co., makers of the Colt revolver and the Gatling gun), typewriters (Royal and Underwood), automobiles, bicycles, cyclometers, carriages and wagons, belting, cigars, harness, machinists' tools and instruments of precision, coil-piping, church organs, horse-shoe nails, electric equipment, machine screws, drop forgings, hydrants and valves, and engines and boilers.
William Durant and Louis Chevrolet were combining their auto inventions to create General Motors, and John Dodge and Walter Chrysler, both machinists, found success in manufacturing vehicles for the military.