Abstract: An educational device for use in learning the locations and names of the various states in the United States as well as other information pertinent to each state is disclosed. The device comprises a rectangularly shaped board having a map of the United States on its front surface, a plurality of lamps mounted on the board, one lamp within the boundary of each state and preferably at the state capitol, a battery holder containing a battery, a cartridge receptacle mounted on the board and arranged to selectively connect the battery to each lamp, and a plurality of cartridges adapted to be inserted into the receptacle one at a time to electrically connect one of the lamps to the battery. Each cartridge contains printed matter pertinent to its particular state and is made of translucent material. When inserted into the receptacle, the cartridge is illuminated by a lamp mounted on the bottom of the receptacle and connected to the battery so that the printed matter can be easily read.

Abstract: A self-propelled rolling toy adapted to contain a child therein and rollable from one point to another, the toy including a seat, and a restraint for holding the child in fixed position in the toy while the child controls movement of the toy. Optionally, a ring is provided having a curved wall whereby, when the toy engages a first part thereof, it is automatically rolled back towards a second part thereof.

Abstract: A powered jointer having a scoring undersurface for forming a stress joint in a wet concrete slab, followed by a reciprocating tamper foot which forms a stress joint while moving rock out of the joint and a smoothing tip following the formation of the stress joint for smoothing out the same, all in a single pass.