. Electric railway journal . onstruction has adapted it to thisdifficult field. It is a costly piece of apparatus to main-tain, due to the abnormal failures of the shafting, anda new grinder has recently been developed for the samework which is far less expensive to maintain and lessliable to cause injury to the workmen. This machinewas illustrated in the Electric Railway Journal forMay The larger machine types of rotary and reciprocatinggrinders and their uses are so generally familiar thatthey need not be described more fully. It suffices tosay that both types are effective and eff
. Electric railway journal . onstruction has adapted it to thisdifficult field. It is a costly piece of apparatus to main-tain, due to the abnormal failures of the shafting, anda new grinder has recently been developed for the samework which is far less expensive to maintain and lessliable to cause injury to the workmen. This machinewas illustrated in the Electric Railway Journal forMay The larger machine types of rotary and reciprocatinggrinders and their uses are so generally familiar thatthey need not be described more fully. It suffices tosay that both types are effective and efficient and thatin general at least one machine of each type may beused advantageously on almost any property. In factsome classes of grinding work can be done best by theuse of both, the one supplementing the other. Incident to the use of grinding machines is thematerial composing the grinding wheels or blocks. Allof this apparatus except the push files (which require aform of special steel bastard file) consume large stocks. Specialized dump cars are playing an importantpart in modern track work of abrasive material, and in consequence the selectionof this stock needs careful attention, with the view tosecuring the most durable and effective material ob-tainable. Tie tamping has been a bugbear with everyone whohas had anything to do with track work. The time-honored custom of tamping by hand, with the tendencyof the men to either go to sleep on each tie or elseto skimp the work when pressed to wake up and cover March 16, 1918 Electric Railway Journal ground, has at last given way to machinery. Themechanical tie-tamping devices now on the marketcame to the front just in time to be of great assistanceat a time of extreme labor shortage. No longer an ex-periment, the pneumatic and electric tie tampers havebecome a part of the equipment of many way depart-ments almost over night. The pneumatic type has hadthe greater development and is in more general use,but there are certain poi
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