Vertical adjuster for suspending lamp

A vertical adjuster for a suspending lamp comprising:

• a cylinder at an upper end of the lamp;
• an inner upper side of the cylinder having a threaded section;
• a lead wire having one end connected to the lamp and being positioned at a bottom of the cylinder;
• an adjuster formed by a seat and a slidable annular block;
• a center of the seat having a hole;
• the seat being locked to an upper end of the cylinder;
• the slidable annular block having an axial hole;
• a lateral side of the slidable annular block having a radial screw hole communicated to the axial hole;
• a screw unit being located in the screw hole;
• a cross section of the slidable annular block being slightly larger than that of the hole and the slidable annular block being located below the seat;
• by the above mentioned feature, the lead wire passing through the axial hole of the slidable annular block and the screw unit screwing into the screw hole so as to combine the slidable annular block and the lead wire;
• the slidable annular block abutting against a bottom of the seat and supporting a weight of the seat;
• thus, the weight of the lamp being uniformly distributed upon the slidable annular block so as to retain the lamp in a vertical position.