. Garton-Daniels and Keystone lightning protective apparatus. . in cap B cemented thereon, and at the bottomwith porcelain plug C cemented therein. The barrel is providedwith supports D-Dv for the strap-iron hanger E, by which the ar-rester is mounted directly on the cross arm or other suitable support. Lead F is connected to line; this lead connects with a heavybrass contact plate G provided with downwardly projecting lips,which make contact with a spraved copper band on upper end of 9 ELECTRIC SERVICE SUPPLIES COMPANY KEYSTONE LIGHTNING ARRESTERS Expulsion Type resistance rod H; to the lower
. Garton-Daniels and Keystone lightning protective apparatus. . in cap B cemented thereon, and at the bottomwith porcelain plug C cemented therein. The barrel is providedwith supports D-Dv for the strap-iron hanger E, by which the ar-rester is mounted directly on the cross arm or other suitable support. Lead F is connected to line; this lead connects with a heavybrass contact plate G provided with downwardly projecting lips,which make contact with a spraved copper band on upper end of 9 ELECTRIC SERVICE SUPPLIES COMPANY KEYSTONE LIGHTNING ARRESTERS Expulsion Type resistance rod H; to the lower end of the resistor is secured theclamping band I which, being provided with a lip, serves as supportfor the insulating member S. Air gap elements are assembled onrod S, the gaps being formed between brass discharge caps J-J bythe interposed porcelain spacers K-K, both of which are permanent-ly secured in place by discharge point M, whose upper end is en-larged and tapped for threading on to lower end of rod S and se-curely locked thereto by means of pin L,.. Figure 3—Diagrammatic View of Kx pulsion Lightning Arrester Discharge point M is enclosed in brass tube N, but is entirelyseparated therefrom by small air gap R; brass tube X, in turn,is connected to ground lead O. Discharge point M is held abso-lutely central with angular brass tube N by means of porcelainblocks P which are cemented in bottom plug <rC It will be noted that the construction of the arrester is simple inthe extreme, and of prime importance is the unit internal construction,the fact that all the constituent parts of the internal assembly arerigidly and permanently connected and held together, the porcelainbarrel or housing performing only the two essential functions of pro-tecting the internal assembly from the elements and of offering ameans of attaching the arrester to suitable supports. 10 ELECTRIC SERVICE SUPPLIES COMPANY KKYSTONE LIGHTNING ARRESTERS Expulsion Type Lightning discharges enter line wi
Size: 1693px × 1476px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectdivisio, bookyear1921
