. Electric railway journal . of many thousands of miles of operation inactual service indicate that the life of the wheel (asdistinct from the removable roller bearing) is increasedfrom two to three times, due to the fact that the wheelis maintained in a constantly vertical position. It hasbeen impossible, however, to determine the ultimate lifeof the bearings themselves, as the original ones are still ELECTRIC RAILWAY JOURNAL May 22, 1915] ELECTRIC RAILWAY JOURNAL 997 in continuous operation. Every bearing in service hasoutworn several wheels without showing any signs ofundue we
. Electric railway journal . of many thousands of miles of operation inactual service indicate that the life of the wheel (asdistinct from the removable roller bearing) is increasedfrom two to three times, due to the fact that the wheelis maintained in a constantly vertical position. It hasbeen impossible, however, to determine the ultimate lifeof the bearings themselves, as the original ones are still ELECTRIC RAILWAY JOURNAL May 22, 1915] ELECTRIC RAILWAY JOURNAL 997 in continuous operation. Every bearing in service hasoutworn several wheels without showing any signs ofundue wear. As shown in the accompanying illustration, the wheelis bored out to admit the bearing, which is then pressedinto place. The outer and inner sleeves of the bearingare .insulated from the wheel by means of insulatingtubes. Both ends of the bearing are insulated by meansof insulating washers, thus protecting the bearing at allpoints. When the wheel becomes worn, the bearing,together with the insulating parts, is removed and. ROLLER-BEARING TROLLEY WHEEL pressed into a new wheel, the operation being completedin a few minutes. The American Roller Bearing Company, Pittsburgh,Pa., the manufacturer of these bearings, has been spe-cializing in the production of anti-friction, non-lubricantroller bearings for all kinds of heavy machinery andequipment for several years. Bearings for trolley-wheelservice were developed a few years ago, during whichtime they have been under continuous test and observa-tion, and the company is now prepared to manufacturethem in large quantities and after designs adapted to alltypes and makes of trolley wheels. New Combination Welding Outfit A novelty in oxy-acetylene welding and cutting out-fits has recently been brought out, the change-over fromthe welding equipment to the cutting equipment beingeasily effected by the addition of a simple attachmentwhich diverts a certain part of the oxygen supply at thehose connection and introduces it as excess oxygen
Size: 1596px × 1565px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
