. The Street railway journal . , ammeter in the leadsor bus-bars between the two units, a watch and a studies of the e. m. f. curves would doubt-less have shown mechanical phase displacements caused bythe speed irregularities, and the latter would have fur-nished some interesting diagrams if recorded on the oscillo-graph film. The effect of fly-wheel regulation would alsohave been perceptible if refined methods of measurementcould have been used. The net result desired was solved,however, by straightforward adjustments of an engineeringrather than a laboratory nature,
. The Street railway journal . , ammeter in the leadsor bus-bars between the two units, a watch and a studies of the e. m. f. curves would doubt-less have shown mechanical phase displacements caused bythe speed irregularities, and the latter would have fur-nished some interesting diagrams if recorded on the oscillo-graph film. The effect of fly-wheel regulation would alsohave been perceptible if refined methods of measurementcould have been used. The net result desired was solved,however, by straightforward adjustments of an engineeringrather than a laboratory nature, and the use of such meth-ods of attack is certainly desirable in all similar practicalproblems of power-station operation. 52 STREET RAILWAY JOURNAL. [\oL. XXXI. No. 2. A LINE CAR WITH A PNEUMATIC HOIST The standard line car of the United Railways, St. Louis,is provided with an air hoist controlled from a valve on thetower. A 6-in. piston extends through the center of thetower. Compressed air is furnished by a Christensen com-. LINE CAR FITTED WITH PNEUMATIC HOIST pressor. The tower is pro\ided with a swinging platform15 ft. long. The car body is 40 ft. long and about one mileof trolley wire is kept in each end of the car, so that wiremay be strung in either direction with the least possibledelay. The car is dri\en bv four 50-hp niotors. PNEUMATIC PIPE BENDING MACHINE H. B. Underwood & Compan}, of Philadelphia. Pa.,have placed on the market a pneumatic pipe bend-ing machine which should appeal to all who havepipe bending to do and have been compelled to doit by hand machine and by filling and heating. Thenew machine, illustrated herewith, has been in practicaluse for a number of months in a large railroad repair shop,where it has been employed for all the pipe bending re-quired in equipping locomotives and for air brake and regu-lar work as well. It will make a right angle bend in a in two minutes, and does not flatten or injure the pipein any way. Dies are furnished
Size: 1834px × 1363px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
