. American engineer and railroad journal . two cranes. These motors are sim-ilar in general to those used to drive the shops, except as tothe winding. The crane motors are not of the constant-speedtype, this feature being sacrificed to a certain extent inorder to obtain sufHcient starting torque in the lifting of heavyloads. The variation in tlje speed Is aiiout 30 per cent, fromthe normal of the constant speed motors of these sizes. The motors operate on 400-volt circuits with two-phase cur-rents having 7,200 alternations. Each motor has a Westing-house controller placed within easy reach of
. American engineer and railroad journal . two cranes. These motors are sim-ilar in general to those used to drive the shops, except as tothe winding. The crane motors are not of the constant-speedtype, this feature being sacrificed to a certain extent inorder to obtain sufHcient starting torque in the lifting of heavyloads. The variation in tlje speed Is aiiout 30 per cent, fromthe normal of the constant speed motors of these sizes. The motors operate on 400-volt circuits with two-phase cur-rents having 7,200 alternations. Each motor has a Westing-house controller placed within easy reach of the motor has three fuses and a treble pole-knife PLANING planing mill was the subject of considerable study withparticular reference to the arrangement of the machinery inorder to avoid all unnecessary handling of material. Thisbuilding is by far the most interesting of those of the cardepartment, and it will be the only one described In reference to the inset accompanying the previous article. Passenger Car Paint Shop Showing Stagings. it will be seen that one of the yard tracks enters the northend of the mill and extends a distance of 100 feet into This is for the purpose of taking loaded cars direct-ly to the first machines upon which the heavy work of thenull is done. Power is supplied by a 125-horse power Arm-lugtou & Sims engine, running at a speed of 268 revolutionsper minute, located In the northwest corner of the powerhouse and belted directly to the shafting of the mill. Thisis tlie only case In the whole plant where an engine Is directlybelted to its machinery and in this case advantage was takenof the favorable location of the mill for the direct shafting of the mill is in 12 transverse lengths spaced about 20 feet apart, except the three lines at the north end. All of the shaft lines except three have Worralls clutches for thepurpose of cutting out the friction of the sliafts and thata
Size: 2116px × 1180px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
