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Updated: July 8, 2025
In a rapid descent by a narrow pathway, the pedal of one of the machines struck upon a protuberance, concealed by a tuft of grass, snapping off the axle, and scattering the ball-bearings over the ground. For some miles we pushed along on the bare axle inverted in the pedal-crank. But the wrenching the machine thus received soon began to tell.
The crankshaft is of nickel steel, made hollow, and mounted on ball-bearings in such a manner that practically a combination of ball and plain bearings is obtained; the central web of the shaft is bent to bring the centres of the crank pins as close together as possible, leaving only room for the connecting rods, and the pins are 180 degrees apart.
The runner's rights are as loyally protected as those of his employer, and he readily covers six miles an hour at a swinging gait. If his vehicle has rubber tires and ball-bearings the labor is not severe. The man might have a harder vocation with smaller pay.
The spring of the exhaust valve was not placed round the stem in the usual way, but at the end of a short lever, away from the heat of the exhaust gases. The cylinders were of cast steel, the crank case of aluminium, and ball-bearings were fitted to the crankshaft, crank pins, and the rotary blower pump.
The pistons are of cast-iron, each fitted with three rings, and the connecting rods are of high grade steel, machined all over and fitted with bushes of phosphor bronze; these rods are connected to a central collar, carried on the crank pin by two ball-bearings.
Una spent much of her time in copying over and over a hundred times, two hundred times form-letters soliciting advertising, letters too personal in appearance to be multigraphed. She had lists of manufacturers of motor-car accessories, of makers of lubricating oils, of distributors of ball-bearings and speedometers and springs and carburetors and compositions for water-proofing automobile tops.
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