A wheeled tractor is a self-propelled vehicle on wheels intended for pulling and activation of various vehicles and tools. Tractors are used in agriculture, construction works, and in industry. The first steam-powered wheeled tractor was manufactured in 1832-1837 by John Heathcoat in England. The first wheeled tractor in Russia was assembled by Yakov Mamin in 1910, but mass production was launched in 1922-1924.
The basis of a tractor is a body where the undercarriage, a power train, a cab with controls and other equipment are attached. The undercarriage has two axles, with one, two or more wheels mountable on one hub. A tractor is equipped with a rear (less frequently - front) attachment, PTO shafts, connectors for hydraulic and electrical systems of the attached/towing equipment.
The postage stamps provide images of tractors: Karlik, STZ 15/30, Vladimirets T-25A, and Kirovets K-7M.
| Paper |
Printing method |
Perforation |
Format of the stamp |
Edition |
| Chalk surfaced |
Offset + security system |
Comb 12:11¼ |
50 × 37 mm |
56 thousand stamps |