. The steam engine indicator and its appliances. Being a comprehensive treatise for the use of constructing, erecting and operating engineers, superintendents, master mechanics, and students ... with many illustrations, rules, tables, and examples for obtaining the best results in the economical operation of all classes of steam, gas and ammonia engines ... Its correct use, management and care, derived from the author's practical and professional experience .. . of the more antiquated pantagraph and lever movements. In our own experience and that of engineers who havebeen using the positive Re
. The steam engine indicator and its appliances. Being a comprehensive treatise for the use of constructing, erecting and operating engineers, superintendents, master mechanics, and students ... with many illustrations, rules, tables, and examples for obtaining the best results in the economical operation of all classes of steam, gas and ammonia engines ... Its correct use, management and care, derived from the author's practical and professional experience .. . of the more antiquated pantagraph and lever movements. In our own experience and that of engineers who havebeen using the positive Reducing Gear, described and illus-trated in this article, it may be said to have given entire satis-faction in all cases, and a return to any of the old methods,,(after becoming familiar with this) could not be contem-plated under any circumstances. And Its Appliances. 61 CHAPTER VIII. DRUM STOP MOTION AND ELECTRICAL APPLIANCE. In using the different lever and pantagraph devices, thathave been illustrated in a previous chapter (or any modificationsof them), for the purpose of giving motion to the paper drum;it becomes necessary with any and all of them to connect anddisconnect the actuating cord leading from the device to the indicator, in order to start orstop the paper drum whenevernecessary, for either adjustingor the removal of the paperfrom the drum. In slow speedengines, the matter of hookingand unhooking the actuatingcord is of no great difficulty;. Fig. with engines of high rotative speed, it becomes more diffi-cult and requires much more skill and experience on the partof the operator to perform the operation successfully and with
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