Abstract: An apparatus for practicing golf swings is provided having a pair of spaced parallel side members, a first cross member attached to an end of each one of the pair of side members, a second cross member attached to the opposite end of each one of the pair of side members in such a manner that the second cross member is free to be rotated relative to said opposite end of the pair of side members, a sheet of simulated grass material on a rectangular sheet of substantially inelastic material which is attached to the first and second cross members for supporting a golf ball and a mechanism for locking the second cross member in position relative to the ends of said side members after a predetermined amount of tension has been applied to the rectangular sheet of material by rotating the second cross member in a direction which results in applying tension to the rectangular sheet of material.

Abstract: An apparatus for practicing a golf swing is described comprising a sheet of simulated grass material having its own backing attached to a separate underlying sheet of substantially inelastic material, such as nylon, which is suspended above an open space for supporting a golf ball. The supporting apparatus comprises a pair of spaced rail members and a pair of spaced risers over which the sheet or combination of sheets is suspended. In use, the ball supporting sheet or combination of sheets is depressed when struck by the head of a golf club when the club is swung "through" a ball in a manner which normally would result in making a divot in the natural turf of a golf course. The apparatus may also be used with a conventional wooden or plastic tee.

Abstract: An assembly of collated nails comprising a nail carrier. In the nail carrier there is provided a strip of material such as paper or plastic on which is provided a bead of flexible, non-hardening adhesive material. Nails are partially embedded at predetermined spacings in the adhesive material. In practice, the strips of nails are wound into circular packages for subsequent use in automatic nailing apparatus.

Abstract: An impact nailing and dimpling apparatus is described. In the apparatus there is provided a dimple forming member and a number of valve members for causing the dimple forming member to be repetitively hammered for providing a dimple in a wallboard or other surface and for setting a nail in the dimple. An adjustable nut is provided for shutting off the apparatus when the dimple and nail have been set to a predetermined depth. A nail feed mechanism automatically feeds nails from a cartridge to a position located beneath the dimple forming member. The baseplate is provided with recesses coupled to a source of vacuum for providing a negative pressure between the base and the wallboard or other surface against which the apparatus is held during nailing operations.

Abstract: An impact nailing and dimpling apparatus is described. In the apparatus there is provided a dimpler and valve assembly for automatically controlling the depth to which nails and dimples are set in a wallboard. A base member is also provided for orientating the apparatus for repeatedly and reliably driving nails into wallboard perpendicular to the wallboard.