The earliest toy trains were made of lead and had no moving parts. Some had wheels which turned, but these had to be pushed or pulled. 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 train quartering
Around 1875, technological improvements in materials and manufacturing allowed tin to be stamped, cut, wrapped, and lithographed faster than ever before.
Toy trains were revolutionized when Märklin, a German firm that specialized in doll house accessories, sought to create an equivalent toy for boys in which a continuous revenue stream could be ensured by selling add-on accessories for years after the first purchase. Along with boxed sets containing 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 along with a working train.
Electric trains adopted, with the first appearing in 1897, made from the U.S. firm Carlisle & Finch. As residential use of electricity became more prevalent in the early 20th century, electrical trains gained popularity and as time moved on, these electrical trains grew in sophistication, gaining light, the ability to change direction, to emit a whistling sound, to smoke, to couple and uncouple cars and even load and unload freight. Toy trains by 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, especially teenaged boys.
Now, S gauge and O gauge railroads continue to be considered toy trains by their own adherents and are often accessorized with semi-scale model buildings by Plasticville or even K-Line (who owns the rights to the Plasticville-like buildings produced by Marx from the 1950s to the 1970s). However, due to their high price, one is more likely to find an HO scale or N scale train set in a toy shop than an O scale set.
Many modern electric toy trains contain sophisticated electronic equipment that exude 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 train quartering