Plug mix seed and sprout planter

Abstract From the Canadian patent

This invention consists of a tractor drawn planter which automatically deposits equally spaced sprout bearing plugs of specially prepared nutrient soil into the ground. It is made of a rectangular framework having two rear wheels upon which it rides and a flexible hitch for attachment to the tractor. A tank equipped with an agitator a plug size measur-, ing device, and a discharge tube contains the plug mixture. Inside, the discharge tube is provided with doors which allow the passage of the plug, at predetermined equal intervals. These doors are controlled by a spring loaded solenoid which is in turn controlled by electrical make and break contact points powered by the tractor battery. A …