. The Street railway journal . sbeen made. They are of opinion that thereis need of a new road from Wall street toForty-second street; that it should be asolid viaduct line through the blocks as faras possible; that the streets should becrossed by massive steel girders, with solidsteel floors having no openings; that therewould be no jar or break of continuity ofmotion in such a structure, and that trainscould be run at a high speed with littlenoise; that the stations should be not lessthan half a mile apart and long enough forten cars; that the cars should be as wideas possible; that the trai
. The Street railway journal . sbeen made. They are of opinion that thereis need of a new road from Wall street toForty-second street; that it should be asolid viaduct line through the blocks as faras possible; that the streets should becrossed by massive steel girders, with solidsteel floors having no openings; that therewould be no jar or break of continuity ofmotion in such a structure, and that trainscould be run at a high speed with littlenoise; that the stations should be not lessthan half a mile apart and long enough forten cars; that the cars should be as wideas possible; that the train should be runby independent motors at a speed of atleast twenty-five miles an hour, includingstops, making the trip from Wall street toForty-second street in nine or ten minutes;and that the viaduct could be built for asum on which a good return would be rea-sonably certain. THE STREET RAILWAY JOURNAL. 85] round a pulley as shown, and back throughR and down the track at F. The pulley Pis attached to a kind of cam, by which a. lever is made to turn about a horizontalpivot, as shown in Fig. 3. A second cord,attached to this lever, operates a signal armat the top of a hollow post. The cord F that passes down the trackis attached to a second arm// at the furtherend of the curve, by means of which thesignal arm is brought back to its first posi-tion after the car has left the curve. Fig. 4 shows the grip in the act of strik-ing one of the levers II. Fig. 5 showsvery fully the pulley and cam that are un-der the post carrying the semaphore is the tube that encloses the cord F thatcomes from the actuating lever at II, andO is the lever that controls the motion ofthe arm above. Of course it will be understood that thissignaling system is not confined to theparticular use here suggested. It may beused in a great variety of ways, but it issuggested that it may be found of especialvalue in this case, i. e., to avoid collisionson curves. The signal posts L and M, onefor each track,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
