. The railroad and engineering journal . is at the back end of the crank-shaft, and the driving-wheel is at the front end. The fixedcenters of the vibrating lever are on the same casting as thebedplate. The lower part of the bed-plate forms a small reser-voir for the benzolene, and this small receptacle is connectedwith the main reservoir, which is placed in any convenientposition, by a pipe about \ in. in diameter. In the presentcase about a (juart is the capacity of the larger reservoir. Fromthe small reservoir the benzolene is drawn up by a pipe about]( in. diameter, and the air, which is p
. The railroad and engineering journal . is at the back end of the crank-shaft, and the driving-wheel is at the front end. The fixedcenters of the vibrating lever are on the same casting as thebedplate. The lower part of the bed-plate forms a small reser-voir for the benzolene, and this small receptacle is connectedwith the main reservoir, which is placed in any convenientposition, by a pipe about \ in. in diameter. In the presentcase about a (juart is the capacity of the larger reservoir. Fromthe small reservoir the benzolene is drawn up by a pipe about]( in. diameter, and the air, which is passed through a small Vol. LXIV. No. S.] ENGINEERING JOURNAL. 383 inspirator, mixes with it and converts it into an explosive mix-ture. The explosions take place at the bottom of the cylinderonce in every two revolutions. The supply of vapor is con-trolled by a rotating plug valve with suitable inlets and outlets ;this valve runs at one-fourth the speed of the crank-shaft, towhich it is geared by an Evarts chain. Igniting sparks are ob-. tained by a current from a bichromate battery with carbon andzinc elements, and the current is transformed by an inductioncoil into one of higher pressure. Contact is made twice inevery revolution of the valve, and as the valve only rotates atone-fourth of the speed of the crank-shaft, this is equivalent toone explosion in every two strokes of the piston. A smallwater-tank placed at a higher level provides the means for keep-ing the cylinder cool by circulating water around it. A tinythrottle-valve regulates the speed of the motor. An openingof ^i,,, in. in the valve is quite sufBcient for the working of themotor, one-eighth of a turn on a screw with 50 threads to theinch giving this opening. It is stated that the amount of ben-zolene used is from } pint to | pint per hour. The motor canbe fixed on a kitchen table, shop counter, bench, or floor, andthe small water tank on a shelf or bracket, while the battery,as in the case of house bells, may
Size: 1458px × 1713px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
