. The railroad and engineering journal . dent was caused by the plates being so muchreduced in thickness that they could not hold the slays. The reports of all the companies for the year 1S77 showthat during that year there were four accidents due to fail-ure of boilers or parts of boilers, by which two personswere killed and two injured. Two of these accidents werereported on ; the other two were slight, caused by failureof lubes. (to be continued.) Vol. LXII, No. 2.] ENGINEERING JOURNAL. 71 Interchangeable Steel Wheel for Street Cars. The accompanying engraving, from the London Eiii^i-neerin
. The railroad and engineering journal . dent was caused by the plates being so muchreduced in thickness that they could not hold the slays. The reports of all the companies for the year 1S77 showthat during that year there were four accidents due to fail-ure of boilers or parts of boilers, by which two personswere killed and two injured. Two of these accidents werereported on ; the other two were slight, caused by failureof lubes. (to be continued.) Vol. LXII, No. 2.] ENGINEERING JOURNAL. 71 Interchangeable Steel Wheel for Street Cars. The accompanying engraving, from the London Eiii^i-neering, shows a new form of wheel for street-cars, inwhichthe tire can be removed from the center and re-placed, when worn, with very slight trouble, and withouttaking the wheel off the axle. The center of the wheel iscast in one piece of mild Swedish crucible steel, and eachspoke has an oval-shaped opening running lengthwise nearits outer end. When the wheel is to be put together thecenter is placed inside the tire, which is rolled of cast-. STEEL TRAMWAY WHEEL. MADE BV HANSELL & CO., SHEFFIELD, ENGLAND. Steel, and each spoke is lengthened until it gets a firmbearing, by drawing together the two sides of the ovalmentioned above. This is effected by steel bolts and nuts,the amount of compression being regulated by a broadspring washer placed between the two members of thespoke. In order to make the connection between the armsand the tire more secure, the ends of several of the armsare circular for a distance of about \ in., and fit into corre-sponding recesses formed internally in the tire. Thecenter can be removed and fitted with new tires as oftenas required. « Electric Motors—The Wrong Way and the Right Way. (From the Electrical Engineer,) A WELL-KNOWN electrician of our acquaintance hadoccasion a short time since to consult a manufacturer oflocomotives, whose street-railroad motors have attained anational reputation for economy and general efficiency,with reference to the con
Size: 1817px × 1375px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookidrailroadengi, bookyear1887
