Abstract: A garage door opener is provided with a drive mechanism formed by a chain that runs in a track. The track is mounted on the platform of a mounting support that is hinged to the vehicle entry wall of a garage directly above the garage door opening. The track includes a track opening directed straight out from the vehicle entry wall. The track extends in a curve from the track opening toward the vehicle entry wall, along a first proximal straight section that lies parallel to the vehicle entry wall, around a one hundred eight degree bend, and along another distal straight section that is located parallel to and spaced from the first, proximal section. The chain is formed with large links having flat upper and lower plates. Each link has a hinged side and an unhinged side and the links are joined together at their corners along their hinged sides. The chain can only be bent in an arc that is concave inwardly toward the hinged sides of the links.

Abstract: Cabinet useable for dispensing any tear-off length of a variety of rolled sheet material ranging from paper towels or toilet tissue to bandages or wrapping material. Following each selected withdrawal/severance from outlet mouth, sheet advance mechanism comprising gear driven contact roller is manually activated by reciprocation of thrust-inserted row of rack teeth so as to effect advance of fresh leading edge of sheet between it and supporting free roller. Latter includes fixed tangential fingers to insure non-clinging of sheet to free roller.