. Railway master mechanic . in. opening than witha 4 in. opening of the ordinary nozzle. The indicatorcards given herewith show the comparative workdone with the new nozzle and with the old and morecommon form. Cards 3 and 4 were taken froman engine having the common nozzle, which was 4 diameter and created plenty of back pressure, andcaused the lift in the exhaust line as shown in card engine had i in. outside lap and was line and line. A NE-W ADJUSTABLE NOZZLE. inside. The inside edge of the exhaust cavity of thevalve was cut away to give 3-32 in. clearance. Thenozzle shown in ou
. Railway master mechanic . in. opening than witha 4 in. opening of the ordinary nozzle. The indicatorcards given herewith show the comparative workdone with the new nozzle and with the old and morecommon form. Cards 3 and 4 were taken froman engine having the common nozzle, which was 4 diameter and created plenty of back pressure, andcaused the lift in the exhaust line as shown in card engine had i in. outside lap and was line and line. A NE-W ADJUSTABLE NOZZLE. inside. The inside edge of the exhaust cavity of thevalve was cut away to give 3-32 in. clearance. Thenozzle shown in our engraving was then put on, andcards 1 and 2 were taken. It will be seen that theback pressure and shooting over indicated in the firstcards is absent in the second cards. The opening atthe top of the nozzle was 41 in. Card 2, taken afterthe changes above mentioned, figured 271 horsepower, against 191 in the same notch, speed and num-ber of cars before the change. Since the change theengine shows the same horse power when the reverselever is in the first notch from the center as she didbefore when in the second notch. Before the changethe engine burned .3i to 4 tons of coal on a passengerrun. Since the change she is performing the samerun with the same ears and sjieed with U to 2 tons. No. 1 The only objection brought to the attention of against the nozzle up to date is that someengineers want to hear her bark as she did before th
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Keywords: ., bookcentury1800, bookdecade1870, bookidr, booksubjectrailroadcars
