Indicating the Refrigerating Machine the Application of the Indicator to the a

naturally suggested itself to still f zrthers implify the work. In addition to this I have added such other matter as seemed pertinent to a work of this character, hoping to place before the reader all necessary references for one who may have to work up indicator cards taken from an ammonia compressor. If my reader appreciates the value of the adiabatic curve after looking through this work, and learns to use Table KO. 2, I feel that my aim will have hit the mark. G. T. V.-- C O N T E N T S -- PART I. INDICATING THE AMMONIA COMPRESSOR. Chapter I.-The l e m e n t a r lIn dicator a simple descriptioil of the principles involved 7 Chapter 11.-The Value of Indicating a Compressor 11 Chapter 111.-The Adiabatic Curve.. . . . . . . . . . . . . . . 19 Chapter 1V.-The Isothermal Curve.. . . . . . . . . . . . . . 25 Chapter V.-Discussion of the Adiabatic and Isothermal Curves.. . . -. .. . . .. . . .. . . . . . 29 Chapter V1.-Fiilding the Horse Power of an Indicator Card.. . . .. . . .. . . .. . . .. . . . . . . . 37 Chapter VII. - Actual Displacement of a Compressor 39 Chapter VII1.-Special Faults as Show11 by Cards.. . 4C Chapter 1X.-Wet Compressor Systein Iildicating.. 51 Chapter X.-Instructions for Connecting Indicator to Machine.. . . . . .. . . .. . . . . .. . . . . . . . 5 PART 11. INDICATISG THE STEAM ENGINE. Chapter 1.-The Steam Engine Indicator . . . . . . . . 59 Chapter 11.--How and Where to Attach the Indicator.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Chapter 111.-The Drum Motion.. . . . . . . . . . . . . . . . 76 Chapter 1V.-How to Take Diagrams. . . . . . . . . . . . . . 84 Chapter V.-How to Find the Power of an Engine. S9 Chapter V1.-The Hyperbolic Curve. . . . . . . . . . . . . . . B Chapter VII. - Ainslers Polar Planimeter. . . . . . . . . . l03 PART 111. CONSTRUCTION OF INDICATORS. Chapter I.-The Crosby Indicator . . . . . . . . . . . . . . 10s Chapter 11.-The Bachelder d j u s t a b l e Spring Chapter 111 .-Improved . Robeftson-cator .... R .. o .. b . e . f . t . s . o . n .. - . T . h . o .. m .. p . s . o .. n . . I . n .. d i-1 19 Chapter . 1V.-The Buffalo Indicator . ................ 123 Chapter V.-American h o m s oInd-i cator ...... l 26 Chapter ........... . V1 . - The Tabor Indicator ., .... l33 Chapter VI1.-The Improved Victor Reducing Wheel. 141 Chapter VII1.-The Ideal Reducing Wheel ..... , .... 144 Chapter IX . - Sargents . Electrical ttachmentfo r Steam Engine Indicators ........... 146 Chapter . X.-Amcjlers Polar Planimeter .......... 149 Chapter X1.-The ILippincott Planimeter .......... 150 Chapter XI1.-The Coffin Averaging Instrument .... l54 PART IV . MISCELLANEOUS TABLES . Properties of Saturated Ammonia ............... . l6 0-163 Table of Ammonia Gas Super-heated Vapor ........ l64 Refrigerating Effect of One Cubic Foot of Ammonia Gas .............................................. 165 Number of Cubic Feet of Gas Pumped per Minute to Ton of Refrigeration ............................. 165 Anhydrous Ammonia, Composition of ................. 1 66 Testing Anhydrous Ammoilia ................... . l6 6-167 Comparisons of Thermometer Scales ......... ...... 168 Mean Pressure of Diagram of Ammonia compressor . l69 Properties of Saturated Steam .................. . l7 0-172 Mean Effective Pressure of Diagram of Steam Cylinder ............................................ 173 Head of Water and Equivalent Pressure in Pounds per Square Inch ...................................