Some had wheels that flipped, but these needed to be pulled or pushed. A few of the early 19th-century drive toy trains were made of tinplate, such as the big, durable, stylized locomotive toys in the U.S., which were painted red and gold and decorated with hearts and flowers. model trains dcc explained
Around 1875, technological advancements in materials and manufacturing allowed tin to be stamped, cut, wrapped, and lithographed faster than previously.
Toy trains were altered when Märklin, a German company that specialized in doll house accessories, sought to create an equal toy for boys in which a continuous revenue stream could be ensured by purchasing add-on accessories for years after the first purchase. Along with boxed sets comprising a train and monitor, Märklin offered extra track, rolling stock, and buildings offered separately, creating the predecessor to the modern model train layout featuring scenery and buildings in addition to a working train.
Electric trains followed, with the first appearing in 1897, made from the U.S. company Carlisle & Finch. As residential use of electricity became more prevalent in the early 20th century, electric trains gained popularity and as time moved on, these electric trains grew in sophistication, gaining lighting, the ability to change management, to emit a whistling noise, to smoke, to remotely couple and uncouple cars as well as load and unload cargo. Toy trains from the first half of the 20th century were often made of lithographed tin; afterwards trains were often made mostly of plastic.
Pull toys and wind-up trains were marketed towards kids, while electrical trains were marketed towards teens, particularly teenaged boys.
Today, S gauge and O gauge railroads are still considered toy trains by their adherents and are often accessorized with semi-scale model buildings by Plasticville or K-Line (who owns the rights to the Plasticville-like buildings created by Marx from the 1950s to the 1970s). However, as a result of their high price, one is more likely to locate an HO scale or N scale train set at a toy store than a O scale set.
Many modern electrical toy trains comprise sophisticated electronic equipment which emit digitized sound effects and permit the operator to safely and easily run multiple remote control trains on one loop of track. In recent years, many toy train operators will operate a train with a TV camera in the front part of the motor and hooked up to a display, such as computer monitor. This will show a picture, similar to that of a real (smaller size) railroad)
Thanks for your interest in model trains dcc explained