Bicycle Wheels

It is not as generally understpod as it fchould be, perhaps, that bicycle wfaeels seldora or never are subjecíed to latera) strains. They need to resist only those strains whioh pass through their own plane, and in this plane only have they any strength worth speaking of. This is worth remerubering when the use of wheels of this type is being considerad for three or f onr wheeled vehicles, where the conditions are essentially different, and where, in turning corners rapidly, or in going over gronnd that causes the vehicle to be inclined sideways, a very considerable lateral strain may be brought upon the wheels - a stram ■whicb the ordinary bicycle wheel is, ■very properly, entirely unfitted for. This is to be considered also in j tion ■with devices for attachiug two ' cycles side by side to rnake a dúplex, or four wbeeled rnachine, of them. Neither the frame, the hearings nor the wheels of a properly constructed bicycle are adapted to snch use without iniury. -