a-half inches; grate surface, ten feet eight inches; fire-box surface, 

 thirty-six feet; flue surface, two hundred and thirteen feet; weight, 

 without fuel or water, twenty-two thousand four hundred and 

 twenty-five pounds. 



After the valves were in gear and the engine in motion, two 

 levers on the engineman's side moved back and forth continu- 

 ously. When it was necessary to put the locomotive on the turn- 

 table, enginemen who were skilled in the handling of the engines 

 first put the valves out of gear by turning the handle down, and 

 then worked the levers by hand, thus moving the valves to the 

 proper position and stopping the engine at the exact point desired. 



The reversing gear was a very complicated affair. The two ec- 

 centrics were secured to a sleeve or barrel, which fitted loosely on 

 the crank-shaft, between the two cranks, so as to turn freely. A 

 treadle was used to change the position of this loose eccentric 

 sleeve on the shaft of the driving wheel (moving it to the right or 

 left) when it was necessary to reverse. Two carriers were secured 

 firmly to the body of this shaft (one on each side of the eccentrics); 

 one carrier worked the engine ahead, the other back. The small 

 handle on the right side of the boiler was used to lift the eccentric- 

 rod (which passed forward to the rock shaft on the forward part of 

 the engine) off'the pin, and thus put the valves out of gear before 

 it was possible to shift the sleeve and reverse the engine. 



As no tender came with the locomotive, one was improvised 

 from a four-wheel flat car that had been used on construction 

 work, which was soon equipped to carry water and wood. The 

 water tank consisted of a large whiskey cask which was procured 

 from a Bordentown storekeeper, and this was securely fastened 

 on the center of this four-wheeled car. A hole was bored up 

 through the car into the barrel and into it a piece of two-inch tin 

 pipe was fastened, projecting below the platform of the car. It now 

 became necessary to devise some plan to get the water from the 

 tank to the pump and into the boiler around the turns under the 

 cars, and as a series of rigid sections of pipe was not practicable, 

 young Dripps procured four sections of hose two feet long, which 

 he had made out of shoe leather by a Bordentown shoemaker. 

 These were attached to the pipes and securely fastened by bands 

 of waxed thread. The hogshead was filled with water, a supply of 

 wood for fuel was obtained, and the engine and tender were ready 

 for work. 



The distance between the two main axles on the locomo- 

 tive is just 5 feet, and the gauge is 56V2 inches. The overall 

 length of the locomotive, including the pilot, is 25 feet; of the 

 tender, 12 feet. 



Watkins has given the cylinder bore as 9 inches, a figure 

 also used by C. F. Dendy Marshall in his "Two Essays in 



40 



