. American engineer and railroad journal . oriven by motor, operating at 1,000 rev. per min., but which isback-geared down to deliver at 400 rev. per min., the back-gearspeeds agreeing in both cases with the speeds of driving of In Fig. 4 there is shown a belted individual drive from a slow-speed inclosed motor to a fret or jig saw, and in a similar drive for a band saw, built by the Frank ClementCompany. The former motor operates at 1,100 rev. per min.,while the latter saw, Fig. 5, is driven by a slow-speedmotor running at 1,000 rev. per min. Fig. G ill
. American engineer and railroad journal . oriven by motor, operating at 1,000 rev. per min., but which isback-geared down to deliver at 400 rev. per min., the back-gearspeeds agreeing in both cases with the speeds of driving of In Fig. 4 there is shown a belted individual drive from a slow-speed inclosed motor to a fret or jig saw, and in a similar drive for a band saw, built by the Frank ClementCompany. The former motor operates at 1,100 rev. per min.,while the latter saw, Fig. 5, is driven by a slow-speedmotor running at 1,000 rev. per min. Fig. G illustrates another back-geared motor drive direct-coupled to a band resaw, built by Fay & Egan, The motor in this case is a 7% inclosed floor-type motor, which runs at 750 rev. per min., but is back-geareddown to deliver at 350 rev. per min. The motors used in this installation are the well-known in-closed slow-speed, multi-polar motors, with laminated poles,manufactured by the Triumph Electric Company, which were. FIG. 5.—BELTED DRIVE FOB A BAND SAW FBOM A 2-H. P. MOTOB. illustrated and described on page 361 of our November, 1900,issue. They are all fitted with self-oiling bearings, carbonbrushes and are designed for a minimum of sparking; theresult aimed for In the general design of this motor is to ren-der it absolutely reliable and as free as possible from repairs. REDUCED CLEARANCE IN LOCOMOTIVE CYLINDERS. the advantages of a reduction in clearance of steam enginesare generally admitted. Many attempts have been made toadapt the principles of the Corliss valve motion lor applicationto locomotives. These have all tailed to attain practical suc-cess. They have usually consisted in the application of anentirely new valve motion with added complication. Mr. IraC. Hubbell, in a paper read before the New York RailroadClub, last month discussed the effect of cylinder clearanceupon the quantity of steam consumed In doing specific workand incidentally introduce
Size: 1493px × 1674px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
