48 BULLETIN 198, UNITED STATES NATIONAL MUSEUM 



rear, while a single door on the right serves the front seat. A folding 

 windshield and a collapsible top are provided, as are a bulb horn, a 

 John W. Brown kerosene taillight, and a pair of E and J kerosene 

 side lamps. The gasoline tank is beneath the front seat. No spare 

 tire is carried. 



Many accessories were formerly available for the Ford car, and this 

 car is fitted with a Ward-Leonard electric starting motor, a Ward- 

 Leonard electric generator, a Stewart and Clark speedometer, a New 

 Haven clock, a foot accelerator, an Anderson intake manifold, a run- 

 ning-board tool box, a running-board battery box, a special coil box, 

 a Hoyt ammeter, a rear-view mirror, a hand-operated windshield 

 wiper, and a pair of electric headlights made by John W. Brown. 

 Antirattling devices are fitted to the brake rods and steering rods. 



HARLEY-DAVIDSON MOTORCYCLE, 1913 



U. S. N. M. No. 313147 ; original ; gift of Paul Edward Garber in 1947 ; photo- 

 graph No. 37759 ; plate 13, 6. 



This motorcycle was purchased secondhand in 1918 by the donor 

 and was used by him for several years. " It was restored by the Harley- 

 Davidson Motor Co. in 1947. The engine number is 4336-D. 



It is equipped with a 5-horsepower, 1-cylinder, 4-cycle, air-cooled, 

 gasoline engine of 3 5/16-inch bore and 4-inch stroke, giving a total 

 piston displacement of 35 cubic inches. Known as the model Nine B, 

 "5-35," it sold for $235 at the factory in Milwaukee, W^is. 



The cylinder casting and its integral head are of heat-treated gray 

 iron. The piston is heat treated and ground and is fitted with three 

 piston rings and a hollow, steel wrist pin. An I-beam section of 

 chrome-vanadium steel, fitted at both ends with phosphor-bronze 

 bushings, serves as the connecting rod. Separate camshafts for the 

 intake and exhaust valves are driven by gears in the magneto drive 

 train. The overhead, intake valve is of nickel steel, while the 2-piece 

 exhaust valve has a cast-iron head and a nickel-steel stem. The crank- 

 case is of polished aluminum, with the hardened, tool-steel crank- 

 shaft mounted in it in phosphor-bronze bearings. An oil drain plug 

 and an overflow pipe are provided in the crankcase. 



Ignition was by Bosch high-tension magneto with spark plug, and 

 the fuel was vaporized by a constant-level, float-equipped, Schebler 

 carburetor. A priming petcock is located in the left side of the 

 cylinder head. A 2-section tank, one for gasoline, the other for oil, 

 is mounted at the upper bars of the frame, above the engine. Filler 

 caps and shut-off metering valves are located on top of both tanks. 

 The lubricating oil for the engine passed by gravity through a sight 

 glass into the crankcase. Ignition and throttle are controlled by twist- 



