. Journal de chemin de fer électrique . montré en thisdlustration est du type Sin-gle-Bolt, bonne fora traction de 1200 lb. Et destiné à yi-in. Et5/16-in. Corde utilisé pour le fil de span de chariot, Mais le type atwo-boulon bon forv-M. et 7/16-in.torons est également fait, la différence entre ce dernier type en plus de l'extrabolt a un pont dans loutilentre les boulons pour mettre un doublepliage dans la stretquand les boulons sont installés. Cela lui donne une résistance de maintien qui, sous test, a été trouvée dans exessof 15,000 lb. Le support de câble qui a été apporté de nouveaux accessoires de câble—ajuster en dehors comme une partie de la capacité
1263 x 1977 px | 21,4 x 33,5 cm | 8,4 x 13,2 inches | 150dpi
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. Electric railway journal . shown in thisdlustration is of the sin-gle-bolt type, good fora pull of 1200 lb. andintended for yi-in. and5/16-in. rope used fortrolley span wire, but atwo-bolt type good forVs-m. and 7/16-in.strands is also made, the difference beingthat the latter type inaddition to the extrabolt has a bridge in thecenter between thebolts to put a doublebend in the strandwhen the bolts are setup. This gives it aholding strength whichunder test has beenfound to be in excessof 15, 000 lb. The cable bracketwhich has been brought New Cable Accessories—Adjust-out as a part of the able Bracketsame line of acces-sories as the cable clamp is also made of pressed steelthroughout and is composed of a slotted rack into which areinserted any desired number of bracket arms. The rack, asshown in the accompanying cut, is in the form of a chan-nel iron and is furnished with an offset end at the bottomwhich permits a number of racks to be placed one above theother to form a continuous piece extending up the side of. a tunnel or wall upon which it is desired to support cables.The T-shaped slots are located in the racks at intervals ofil/2 in. and the bracket arms can in consequence be set at anydesired elevation with a close degree of adjustment. Thearrangement permits the insertion or removal of a bracketarm with a vertical movement of only 5/16 in., and as allpieces are stamped out of steel in the process of manufac-ture complete interchangeability is assured and any armcan be inserted in any slot. The bracket arm is made with a T-shaped head, thewings of which catch in the narrow part of the T-shapedslot in the rack when the arm is down in place, and agroove is pressed into the arm to give it transverse strengthas a beam in carrying its load. At the inner end of the arma heel-piece of steel is electrically welded on, and this restsagainst the face of the rack, serving to take the thrust setup by the presence of a weight at the end of the arm.The arms are made in 10-
