Pilot in open cockpit of World war I vintage biplane. He wears helmet and goggles. He taps his machine gun, and looks around.
The first piece of airmail is displayed. President Wilson holds an envelope for mailing by airmail. Mrs. Wilson stands with him. Many officials and spectators are present. The Curtis JN-4 airmail airplane, piloted by Lieutenant George L. Boyle, takes off from the Polo field in Washington DC.
The processing of planetary gear in a machine shop, United States. Interior of the machine shop. Workers assemble the turbine inside the shop. Machining the lower and upper part of maneuvering valve. Boring end of reduction gear case. Men machining the reduction gear case. Planetary gear forging. Processing of the planetary gear and various stages of the completion of the gear. Cutting teeth of planetary gear, driving pinion and internal gears. Worker machining gear cage which carries planetary gears. They balance the gear cage. Workers work in the planetary gear and cage assembly. Unit of planet gear reduction being assembled into case. Propeller shaft thrust bearing at right hand. A skeleton unit showing the reduction of speed from 8.4 to 1.
The processing of a turbine in a machine shop in United States. Interior of the machine shop. An assembly of rotor disc and blades. Men work on the rotor blades. Brazing band on end of blades to stiffen them. Men turn the turbine shaft. A man watches the turning turbine shaft. Rotor ready to be placed in the turbine casing.
Interior of a machine shop. Workers assemble a turbine. They assemble the maneuvering valves. The completed turbines and the reduction gear. A sign reads: '2500 horse power steam turbine engine used in eagle boats, Ford Motor Company'. Turbine and reduction gear ready for shipping. The turbine at work.
Imperial German Army troops marching into the middle of Berlin, to maintain order, as crowds of civilians mill about, watching them. German populace going about ordinary daily affairs, as the troops bivouack on the city streets. Soldiers on a street corner, eating a meal from a field kitchen set up on the sidewalk. The carriage wheels of an artillery field piece is seen on the sidewalk,in the background, along with the Imperial military flag. In another scene, soldiers sit and rest, idly, on the sidewalk of a boulevard. Their arms are stacked, and some are trying to nap. In the background, a crowd has gathered to listen to a speaker (unseen). A monument and statue stands in center of the scene. (World War I; World War 1; WWI; WW1)
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