| Upper plane, span | 30′0″ |
| Over-all length | 30′9″ |
| Net weight, machine empty | 1,012 lbs. |
| Weight, full load | 2,638 lbs. |
Dayton-wright Aeroplane Company
De Havilland 4
The De Havilland 4 Aeroplane, exhibited by the Dayton-Wright Aeroplane Company, was the first De Havilland 4 battle-plane to be built in America, having been completed October 29, 1917, at Dayton, Ohio. This machine has been in continuous service since that time, and has been used in 2,500 flying tests of various kinds.
With this machine a distance of about 111,000 miles has been covered in a time of about 1,078 hours. Twenty-eight cross-country trips have been made in it, including Dayton to Washington, Dayton to New York, Dayton to Chicago, Dayton to Cleveland, etc.
The battle-plane is exhibited with all its military equipment, including two Marlin machine-guns fixed on the front cowling and fired through the propeller at a rate of 750 rounds at 1,650 R. P. M. of the engine, and two movable Lewis machine-guns at the rear cockpit which fire 650 rounds per minute. The wireless carried has a range of eleven miles to another aeroplane and a receiving radius of forty-seven miles by a ground-station. A camera located to the rear of the observer is worked by means of wind-vane. Photographs are taken at the rate of twenty-four per minute, and magazine carries six dozen plates.
A full complement of twelve bombs are carried under the lower wings, and flare-lights for night-landing are suspended from the wing-tips. Red and green guide-lights are carried on the lower plane, and a white light is located on the fuselage deck aft of the gunner. The engine is one of the first Libertys to be built.
The T-4 Messenger
The “Messenger” was designed as a war-machine, but after being modified in small details it makes an ideal machine for commercial and sporting purposes. As a war-machine its use was to have been in carrying messages from the front lines to headquarters and in general liaison work.
The machine is exceptionally light and easy to fly, making it possible to make landings in places that have been heretofore inaccessible.