242 Mr. P. Taylor on a Horizontal Pumping Engine 



In Plate I. is a section (fig. 1.) and a plan (fig. 2.), showing 

 the principal parts of the engine now at work on the mine of 

 Moran, — which was constructed by Messrs. Taylor and Mar- 

 tineau. 



A A. Tlie foundation on which the engine is fixed, being 

 merely a level bed of masonry, with pieces of timber intro- 

 duced to receive the bolts, &c. which hold down the engine. 



B B. Two cylinders, each 10 feet in length and 18 inches 

 interior diameter. These are fixed in a horizontal position 

 and exactly parallel to each other, by means of the four cast- 

 iron saddles C C C C, which embrace both cylinders, and are 

 secured to the foundation. 



Each of these cylinders has a metallic piston ; one of which 

 is shown (a) fig. 1. and it will be observed that both the pistons 

 are fixed on the middle of the piston rods D D D D, which 

 work through stuffing boxes at each end of the cylinders. 



E E. Two strong cross heads, into which the four extre- 

 mities of the piston rods are firmly fixed. 



F F F F. Four friction wheels fitted on the ends of the 

 cross heads. These wheels are grooved on their edges and 

 traverse between parallel guide rods, which are kept in a state 

 of tension by the screws at their extremities G G G G, their 

 other ends being made fast to the saddles CC, which confine 

 the cylinders. 



H H. The connecting rods attached to the cross heads EE, 

 by which the power may be applied to pumps placed either 

 at one or both ends of the engine. 



I I. The tappet rod fixed also to the cross heads E E, by 

 the reciprocating motion of which the valves are opened and 

 shut. 



J J. The passages in the valve nozles to admit steam from 

 the boiler. 



K K. The passages through which the steam escapes af- 

 ter it has given motion to the piston. 



The steam entering through the passages J J, is admitted 

 by the action of the valves (6), to both cylinders at the same 

 instant through the cross passages LLLL (fig. 2.) While in 

 like manner the steam from the opposite ends of both cyl'm- 

 ders passes off through the passages K K. 



The pistons are 18 inches in diameter, and make a 9-feet 

 stroke. The boilers attached to the engine are calculated to 

 supply them with steam of a pressure equal to 50 pounds on 

 the square inch with perfect safety. 



The speed of the engine is regulated by a cataract, and the 

 valves are so arranged as to allow of its being worked ex- 

 pansively or otherwise, as circumstances may render desire- 

 able. 



