Ceiling devices and methods of installing same

A method of erecting a support system for a hung ceiling which includes ceiling tiles having edge slots and also includes

• a plurality of channel members, each of which has an elongated U-shaped receptacle that is dimensioned and configured to receive and retain the edge of ceiling tiles to be associated therewith,
• means for retentively affixing selected among said channel members to walls, each with its respective U-shaped receptacle substantially horizontal and facing outwards from the wall to which it is affixed,
• and a plurality of hanger means, each of which consists of an elongated hanger that has mounting means at one of its ends adapted to retain one of the remaining of said channels, and is adapted for fixation at the other of its ends to an overhead support with the U-shaped receptacle of the channel being retained by it facing toward that of one of said selected channels,
• comprising the steps of
• selecting a starting wall of the room in which said system is to be installed,
• selecting a finishing wall opposite said starting wall,
• marking with wall hanger position marks the desired level of the ceiling to be installed at sequential locations on the wall surfaces of said room,
• connecting sequential among said wall hanger position marks by means of straight lines around said room,
• affixing some of said channels to said walls at predetermined positions with respect to said lines, with their U shapes facing away from the wall on which each respectively is positioned, level strings from sequential locations along the channels on one side of said room to channels on the opposite side of said room,
• positioning said hangers at successive locations along each of said strings that are at the same distance from each location on either side as the dimension in that direction of the tiles to be installed in said ceiling, with the channel mounting means on each oriented downward and with the topmost end of said hanger juxtaposed to the surface to which said hanger is to be attached and with said channel mounting means so positioned that when such channels are mounted thereby on said hangers and ceiling tiles are retentively positioned thereon by means of their edge slots, the undersurfaces of said tiles are substantially coplanar with the undersurfaces of ceiling tiles positioned in said channels affixed to said walls, affixing each of said hangers to the surface to which it is to be attached,
• and positioning channels in said hangers with each such channel oriented in the direction of the same one from among all of the channels affixed to the walls of said room.