. La ferrovia e la rivista di ingegneria . -ruota,che aziona direttamente su una ruota a catena più grande contenuta sul telaio superiore. Il motore è sospeso dal telaio superiore da una staffa, disposta in modo da consentire l'oscillazione totale, il movimento di oscillazione non ha quindi permesso di interferire con il moto della catena, in quanto si tratta di un movimento radialmente al centro della ruota-catena grande sul telaio superiore. Iltelaio superiore contiene, oltre alla ruota-catena grande, due ruote-motrici con pneumatici in ghisa malleabile per afferrare la fune,ciascuna fissata ad una ruota-catena azionata dal supporto dell'albero allacentrale grande

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. The railroad and engineering journal . -wheel, which drives directly upon a larger chain-wheelcontained on the upper frame. The motor is suspended fromthe upper frame by a hanger, so arranged as to allow the wholeto swing, the swinging movement thus allowed not interferingwith the motion of the chain, as it is a movement radially tothe center of the large chain-wheel on the upper frame. Theupper frame contains, in addition to the large chain-wheel, twodriving-wheels with malleable cast iron tires to grip the rope, each attached to a chain-wheel driven from the shaft supportingthe large central chain-wheel.—Londpn Electrician, 528 THE RAILROAD AND [November, i8go. A German Bridge. -The accompanying cut represents abridge recently erected to carry a street over the Zoll-canal inHamburg, Germany. It presents no special features of con-struction, but is notable for its neatness and elegance of design.It is obviously a bridge ; that could not well be concealed, butthe general eflect on the eye is good enough to satisfy even our. exactingfriends, the architects and poets, who havebeen find-ing so much_fault with engineering structures^.lately, and de-nouncing engineers as Vandals who destroy the beauty of alandscape. A French Fast Train.—A new locomotive built in the shopsof, the Northern Railroad has just been tried at high speed, witha special train of iG carriages, having a total weight of 667, 800lbs. Lead bars were put in the carriages to represent the aver-age weight of passengers, baggage, ftc, carried on an expresstrain. I This train ran from Paris to Calais by the direct line, a dis-tance of 184.56 miles, in 3 hours, 53 minutes ; two stops weremade, one of five minutes at Amiens, the other of two minutesat Abbeville. The average speed, making no allowance forslops, was thus 47.53 miles an hour. The run from Paris toAmiens was made at the rate of 51.58 miles an hour, the traingoing up the Survilliers grade—0.5 per cent , 11.19 miles long—at the rate of 46.6 m

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1880
• booksubjectrailroa
• bookyear1887