. The street railway review . low cost has been installed on many miles of the more importantthird-rail systems. .Ml parts of this insulator are easily separatedand can easily be removed from the track without disturbing thethird-rail. The same body can be used to support contact rails ofvarying widths of base by merely changing the size of rail clips. The General Electric Gos, standard type third-rail insulator withreconstructed granite insulation consists of three parts. A cap pro-tects the insulating block and has cast upon it lugs for holding therail in place and bosses which lessen any fr
. The street railway review . low cost has been installed on many miles of the more importantthird-rail systems. .Ml parts of this insulator are easily separatedand can easily be removed from the track without disturbing thethird-rail. The same body can be used to support contact rails ofvarying widths of base by merely changing the size of rail clips. The General Electric Gos, standard type third-rail insulator withreconstructed granite insulation consists of three parts. A cap pro-tects the insulating block and has cast upon it lugs for holding therail in place and bosses which lessen any friction due to the slidingof the third-rail from the cause of expansion or contraction. The. TYPE OF INSULATOR. 1NS1_■^T0K FOR T-BAK into the desired form under heavy pressure and then fused iiUo asolid mass at a temperature 3,000° F. When usedfor insulating purposes reconstructed granite is highly glazed toprevent any accumulation of dirt. This glazing process insures along life for the high resistance qualities of the block. The recon-structed granite differs from natural stone in many important re-spects, namely: 1. Being vitreous it does not contain or absorb moisture, hence,it can be heated red hot and dropped into water without cracking. 2. It is of unlimited durability, not being affected by heat or anycommercial acids. 3. It is exceedingly strong, its crushing strength ranging from
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
