. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . countered. .Some rliscomfort was experienced in wear-ing gas masks in atmospheres of high temperature andhumidity. 5. Temperature tests on the train air-brake pipe line-bowed increases of 4 to 41° in the temperature of the air in this line during the passage of a train through thetunnel. The temperature of the air in the train pipe wasalways 10° to 28° lower than the temperature of the airin the cab atmosphere. 6. Analysis of 11 samples of air taken from the trainpipe as the train emerged fro
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . countered. .Some rliscomfort was experienced in wear-ing gas masks in atmospheres of high temperature andhumidity. 5. Temperature tests on the train air-brake pipe line-bowed increases of 4 to 41° in the temperature of the air in this line during the passage of a train through thetunnel. The temperature of the air in the train pipe wasalways 10° to 28° lower than the temperature of the airin the cab atmosphere. 6. Analysis of 11 samples of air taken from the trainpipe as the train emerged from the tunnel showed no car-bon monoxide in eight samples, and per cent in threesamples; while corresponding samples taken from the cabatmosphere showed from to per cent carbonmonoxide. 7. Smoke deflectors or mechanical devices for deflect-ing the smoke from the locomotive cab, decreased the tem-perature of the cab atmosphere 20 to 30 degrees. The conclusions reached are that: 1. Asphyxiation due to exposure to carbon monoxide,and exhaustion due to high temperatures and Air line respirator. Fig. 1.—Section and Plan of Air Line Respirator That Gives Vi^earerFree of Hands and Eyes are the main causes of the accidents that have occurred inthe tunnels investigated. 2. Results of physiological tests over periods of 10minutes showed that the conditions in the cabs might besevere enough to cause asphyxiation or exhaustion in])eriods of .20 minutes, especially in cases where the engineis stalled. 3. If gas are used in the tunnels in which thesetests were conducted, they should provide protection forthe wearer against carbon monoxide. The results of testsl)v the investigator while wearing a mask proved to himthat it was apparent that the feeling of wasverv much accentuated by unusually bad conditions, duito a combination of the effects caused by the altitude, hightemperatures and humidities, and the time gas masks were fe
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
