A bicycle where one person is sitting ahead of the other is called a tandem.
A locksmith
cobbler
glazier
mechanic
A person who installs repairs replaces and dismantles the machinery and heavy equipment used in almost very industry is called a machinist.
The name of someone who repairs machinery is a machanic.
Watchmaker Also, an heurologist
The earliest bicycles were also called hobby horses or boneshakers.
A bicycle seat is typically called a saddle.
The noun 'bicycle' is a common noun, a general word for any bicycle. A proper noun is the name of a specific person, place, or thing. A proper noun for the common noun 'bicycle' is the name of a bicycle, such as the Norco Bigfoot and the Schwinn Voyager, or Bradley's Bicycle Shop.
I think you looking for a bicycle called the Penny-farthing, an early design of bicycle that had a very large front wheel.It is called a penny-farthing. Called that because the difference between the big wheel and the small wheel was similar to the difference between the old British pre-decimal penny and the farthing.