"KLAHR BICYCLE, 1883 U.S.N.M. No. 309259... photograph No. 784; plate 14, a. Patent No. 285821... October 2, 1883, to William Klahr... for a bicycle. This model shows a bicycle of the Star type, propelled by single-acting pedal levers in combination with racks, pinions, and clutches on the rear axle. The model... is constructed entirely of metal with the exception of the tires. The triangular frame supports a vertical steering fork with a small wheel at the front, and a large driving wheel at the rear. Both wheels are radially wire-spoked... The upper extension of the fork is at an angle to the fork itself, and is fitted with handle bars at its upper end. A coil spring tends to keep the fork centered, with the wheel headed straight ahead... A rear extension of the lower or horizontal forked member of the frame extends back of the rear-wheel axle, on each side of that wheel. Long curved arms, with pedals at their front ends, are pivoted from the rear ends of these extensions. Slightly curved racks extend upwards from each arm, each rack meshing with a gear on the axle of the rear wheel. Each of these gears incorporates an overrunning clutch, so that when the arms are depressed by foot pressure the gears will drive the rear wheel forward. When the arms return by spring pressure to their upper positions, the overrunning clutches operate, and so do not hinder the forward motion of the machine. The two arms are independent... intended to be depressed alternately. Part of the gearing is missing from the right side of the model. A saddle is located on a leaf spring over the rear wheel. A spring-returned foot brake, operated by the left foot, is mounted in front of the rear wheel, and rubs against the rear tire."