“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.=