7 Machines, machine tools and tractor towed machines, as far as not included in other classes, for maintenance, conservation and treating agricultural grounds, sport fields and turf, namely, scarifier machines,; earth moving machines,; power-operated cultivator machines,; aerators being machines and turf aerators; mowing machines; grass, brush, agricultural grounds, sport fields and turf mowing attachments for agricultural vehicles; riding agricultural mowers for grass, brush, agricultural grounds, sport fields and turf; decompactors; flail mowers; mechanically operated root pruners; agricultural machines in the nature of air injecting machines, for use in injecting air into installed turf and grass, fields, and lawns; aerators being machines; raking machines; rolling machines, namely turf, field, and lawn rolling machines; fraise mowers; harrows, namely tractor towed or mechanically operated harrows; mechanical spreaders for the application of one or more of seed, water, soil, sand; mechanically operated sweeper machines, namely sweeper machines for turf, fields, and lawns; turf removing ploughs; parts and fittings for all of the aforesaid goods in this class