GB405367A - Improved means for securing electric insulators to supporting members - Google Patents

Abstract

405,367. Distribution boards. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., Hamilton House, Victoria Embankment, and BEWERS, H. C., 25, Smithies Road, Plumstead, both in London. Sept. 1, 1932, No. 24389. [Class 38 (v).] A distribution board comprises a series of panel or tablet type insulators arranged adjacent each other on a common support, alternate insulators being directly secured to the support, while the remaining insulators are held in position by engagement with the adjacent directly secured insulators. In the pillar feeder shown in Fig. 2, a multicore cable 4, having three power cores 5, a neutral 6, and a switch wire 7 is led into an elongated metal sealing chamber 1. The three power cores are connected to terminals 8 which pass through the front wall of the chamber and are insulated therefrom bv insulators 9 secured to the casing by screws 23. The neutral core 6 and switch wire 7 are similarly connected to terminals 10, 11 passing through directly-secured insulators 12, 13. The intermediate insulators 14, 19 and 22 carrying terminals 15, 18 and 21, which can be connected to the remaining terminals by detachable fuse carriers, are formed with lugs 33 which engage recesses in the adjacent insulators to hold the intermediate insulators in position. The uppermost insulator 14 is held in position by engagement with the adjacent insulator 9 and with a recess 34 on the end of the casing. The bus bars 16, 17, 20 are supported on the insulators 14, 19 and 22. In Fig. 8 is shown a board built up of fifteen insulator tablets in three vertical rows, in which the six tablets 1 only are directly secured to the supporting frame 2, the remaining tablets 4, 5 being held in position by the interengagement of their end surfaces with the end surfaces of adjacent insulators.