. Electric railway journal . U TWIN CITY OVERHEAD SUB-FEED HANGER As shown in an accompanying illustration, the trolleyhanger consists of two legs attached to the ends of a2-ft. maple stick, at the center of which there is a sis-ter hook for span-wire attachment. The legs are ofbronze, with a 4-in. ear on the bottom of each and asquare fitting on the top with provision for pinning tothe maple stick by means of a cotter pin. The maple stick is 24 in. long, 1% in. square, withthe corners chamfered, and it is thoroughly impregnatedwith paraffin by boiling. Formerly a somewhat shorterstick was use
. Electric railway journal . U TWIN CITY OVERHEAD SUB-FEED HANGER As shown in an accompanying illustration, the trolleyhanger consists of two legs attached to the ends of a2-ft. maple stick, at the center of which there is a sis-ter hook for span-wire attachment. The legs are ofbronze, with a 4-in. ear on the bottom of each and asquare fitting on the top with provision for pinning tothe maple stick by means of a cotter pin. The maple stick is 24 in. long, 1% in. square, withthe corners chamfered, and it is thoroughly impregnatedwith paraffin by boiling. Formerly a somewhat shorterstick was used but it has been found that the use of thelonger stick results in more uniform wear, that underthe leg being now not noticeably greater than in themiddle of the span. The sister hook is of malleableiron, with the top arranged for hooking over the spanwire and with a square eye below through which themaple stick slips loosely. The hook is held near thecenter of the stick by means of two cotter pins. This construction is ligh
Size: 1965px × 1272px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
