NSWGR 3-position UQ semaphore motor-worked signal, electric double light, on 12ft doll 22ft above ground

NSWGR 3-position UQ semaphore motor-worked signal, electric double light, on 12ft doll 22ft above ground

An upper quadrant motor-worked semaphore on a 12ft doll for mounting on an elevated signal platform 22ft above ground level ('NSW cantilevered signal platform, 22ft, covers 2 tracks, A-form post', kuid:368725:20358). The semaphore can take 3 positions over the upper quadrant: horizontal (STOP), 45 degrees (CAUTION) and vertical (PROCEED).
Home and distant 2-position automatic semaphore signals appeared in NSW in the 1900s. Later (1920s?) a 3-position variant for use in areas with higher traffic densities started to appear. These were double-light semaphore signals where the lower light was a white-light lamp with a red/green spectacle arm or a 2-colour electric light in place of a distant semaphore. The semaphore had 3 positions but the 3 spectacles showed only 2 colours (red, green, green). By day, CAUTION was indicated by the semaphore at 45 degrees, while at night the light indication was green over red.
If the signal was automatic, it was controlled by a nearby relay hut ('NSWGR automatic signal relay hut', kuid:368725:20070) in which track-circuit detections were converted into signal-motor instructions to set the semaphore position.

NSWGR 3-position UQ semaphore motor-worked signal, electric double light, on 12ft doll 22ft above ground
• arm_s.im 32.35KB
• arm_s.kin 4.36KB
• arm_s.lm.txt 178 bytes
• arm_s_med.im 7.02KB
• arm_s_med.kin 4.36KB
• config.txt 4.25KB
• corona_green.texture.txt 35 bytes
• corona_green.tga 16.04KB
• corona_green_0p75.texture.txt 40 bytes
• corona_green_0p75.tga 16.04KB
• corona_red.texture.txt 33 bytes
• corona_red.tga 16.04KB
• corona_red_0p75.texture.txt 38 bytes
• corona_red_0p75.tga 16.04KB
• corona_white.texture.txt 35 bytes
• corona_white.tga 16.04KB
• default.im 1.37KB
• main_0.im 273.33KB
• main_1.im 202.39KB
• main_2.im 114.19KB
• main_3.im 63.54KB
• main_4.im 21.45KB
• power-worked semaphore_el-power-worked semaphore_el.texture.txt 85 bytes
• power-worked semaphore_el.tga 2.00MB
• power-worked semaphore_el_normal-power-worked semaphore_el_normal.texture.txt 124 bytes
• power-worked semaphore_el_normal.tga 2.00MB
• thumbnail.jpg 43.02KB
• vsrsemaphoresignal_v4d.gs 22.97KB