. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . h attention as at the presenttime. July, 1902. RAILWAY AM) IJJCOMOTIVF. r-:.\GINEERING 309 Slack Adjuster Device. I submit to you, a sketch of a devicewhich I consider is an improvement onthe McKee slack adjuster. The cutshows the usual arrangement of the slackadjuster itself and my improved attach-ment /?; B is to be fastened securelybetween the truck bolster and the springplank, with a universal joint at X, to al-low for the swaying of the truck. Coolin); (ipc for Air Pumps. The problem of
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . h attention as at the presenttime. July, 1902. RAILWAY AM) IJJCOMOTIVF. r-:.\GINEERING 309 Slack Adjuster Device. I submit to you, a sketch of a devicewhich I consider is an improvement onthe McKee slack adjuster. The cutshows the usual arrangement of the slackadjuster itself and my improved attach-ment /?; B is to be fastened securelybetween the truck bolster and the springplank, with a universal joint at X, to al-low for the swaying of the truck. Coolin); (ipc for Air Pumps. The problem of frozen train pipes wasat the late convention pretty well ham-mered on, and was quite interesting ycnir p:ii)er. Page 255, you advocatemcjre strongly and urge a longer deliv-ery pipe to the pump, giving the air achance to cool. Now, I have found out that it is notalways the long pipe that allows the air is believed to be a bolter plan than thelong, straight pipe. Twenty or 30 feet ofpipe in a spiral as shown and in an ex-posed position will be quite , N. H. Frank Raltwajf ^ tiieomoliie hnuiitwring ) MODIFICATION OF THE SLACK When the car is unloaded the piston />will ascend in the position shown in thecut in this addition, the air coming fromthe brake cylinder to the attachmentsgoes into chamber E and there remains,not being permitted to pass to the cyl-inder of the adjuster to turn the screwand take up the slack. When the car is loaded, the piston pwill be pushed down to the position b,where the air from chamber E passes tothe outlet of the device B and goes tothe adjuster cylinder, where it will takeup slack. The improvement lies in the fact thatwhen the car is light or unloaded the de-vice B will not permit the adjuster tooperate, but when the car is loaded, thedevice £■ permits the air to pass as usualto the adjuster cylinder, thus taking upslack on a loaded car, but not on a lightcar, A. J. OHara, Engineer Erie
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