and the services of two men. Now one man takes care of it all on a special machine, designed and built in the factory. The man now merely hangs the assembly on a moving chain which carries it up over the enamel tank, two levers then thrust thimbles over the ends of the ladle shaft, the paint tank rises six feet, immerses the axle, returns to position, and the axle goes on to the drying oven. The whole cycle of operations now takes just thirteen seconds.
The radiator is a complex affair and soldering it used to be a matter of skill. There are ninety-five tubes in a radiator. Fitting and soldering these tubes in place is by hand a long operation, requiring both skill and patience. Now it is all done by a machine which will make twelve hundred radiator cores in eight hours; then they are soldered in place by being carried through a furnace by a conveyor. No tinsmith work and so no skill are required.
We used to rivet the crank-case arms to the crank-case, using pneumatic hammers which were supposed to be the latest development. It took six men to hold the hammers and six men to hold the casings, and the din was terrific. Now an automatic press operated by one man, who does nothing else, gets through five times as much work in a day as those twelve men did.
In the Piquette plant the cylinder casting traveled four thousand feet in the course of finishing; now it travels only slightly over three hundred feet.
There is no manual handling of material. There is not a single hand operation. If a machine can be made automatic, it is made automatic. Not a single operation is ever considered as being done in the best or cheapest way. At that, only about ten per cent. of our tools are special; the others are regular machines adjusted to the particular job. And they are placed almost side by side. We put more machinery per square foot of