7 Agricultural machines and machine tools, instruments that are not hand operated and machines for agriculture, animal husbandry, horticulture, forestry, earthmoving, gardening and/or cultivation for pleasure, namely, cultivating machines in the nature of tractor-towed toothed harrows and disk harrows, rotary power tillers, plows, cultivators, tractor-towed rotary harrows, and soil loosening plows; agricultural machines, namely, seeders, pneumatic seeders, mechanical seeders, precision seeders, replacement parts of seeders, seeders combined with cultivating machines, land-packing rollers, land-packing rollers combined with seeders, and land-packing rollers combined with cultivating machines; hay making machines, namely, tedders, windrowers, combined tedder and windrower machines, mowing and reaping machines, cutting bars, mower conditioners, grass aerating mowers, groupers, and windrow turners; agricultural harvesting machines, namely, harvesters, combine-harvesters, balers, and bale wrappers; processing machinery, namely, spraying machines, power-operated sprayers, and self-propelling machines for spraying; tractor-towed agricultural implements, namely, mowers, crushers, scrub cutters, conveyors, lifts, and bedding machines; machines for preparing cattle fodder, namely, silo unloaders, unloader-distributors, blender-distributors for fodder, and unloader-blender-distributors for fodder; tractor-towed agricultural implements, namely, fertilizer distributors and manure spreaders; earth moving machines; self-propelling machines for cutting, or for tedding, or for windrowing or for cutting products in the nature of vegetables, self-propelling machines for cultivation, self-propelling machines for sowing, self-propelling machines for seeding and cultivation, self-propelling machines for preparing cattle feed such as self-propelled unloader-blender-distibutors, and self-propelled blender-distributors; replacement parts of the aforesaid machines