LAMP ADJUSTERS.
“Gem” lamp Adjusters, styles A and B. A pulley-wheel mounted in iron bracket, wheel controlled by locking mechanism so as to permit the adjustment of a pendant lamp hung from a porcelain knob secured to device. Suitable for use with flexible pendant cord. Approved April 13, 1908. Manufactured by
Gem Mfg. Co., 467 Eleventh Ave., Milwaukee, Wis.