Early bicycles came in a variety of sizes, shapes and styles, and they had colorful nicknames.
The "dandy horse” had no pedals and was propelled by the rider’s feet pushing the ground — essentially wheel-assisted walking. The "penny farthing” had pedals, but the rider sat above a huge front wheel that dwarfed the tiny back wheel — similar to the size difference between the British penny and farthing coins. "Boneshaker” bicycles had iron and wood wheels that were ill-suited for rough terrain. What they all had in common was that they were uncomfortable, unsafe and expensive.
In the late 1800s, a series of technological innovations led to "safety bicycles” that had two identical wheels, a chain drive, a diamond frame and inflatable tires. The British public embraced the safety, comfort and cost of these improved bicycles. Middle-class Brits who could not afford a horse or horse and carriage were now able to travel conveniently through cities and far into the countryside — even over bad roads. Bicycles were also environmentally friendly, offering an inexpensive solution to what became known as "the great horse manure crisis of 1894,” a reference to the fact that the horses transporting people and goods were overwhelming cities with foul-smelling, disease-spreading droppings.