AMERICAN INSTITUTE. 



191 



Marine Heater. 



John 11. Sees, 10 Suffolk street, New-York. The cut shows 

 one of Sees' marine heaters attached in the front connection of 

 an ordinary return flue boiler, the whole being placed below the 

 water line of the boiler, to insiu-e a perfect circulation of water 

 from the boiler throughout the heaters when the pump is not in 

 operation, thereby increasing the steaming capacities of the boiler 

 full 25 per cent, by using the heat which is at present lost by es- 

 caping out of the smoke pipe. The pipes on the outside of the 

 boiler represent an ordinary 2i inch feed pipe; the dotted lines 

 are the two branch trees with four l.\ inch flanged outlets connect- 

 ing with the four 1,\ inch pipes inside the connection, each joint 

 being flanged and faced. By dividing the 2| inch pipe into four 

 1^ inch pipes after it enters the connection, the same area of wa- 

 ter space is maintained, the inventor claims an increase of four 

 times more heating surface than can be obtained in any other form. 

 They offer no obstruction to the draft, and do not interfere in clean- 

 ing the connections or flues. The materials used being the best 

 quality of brass and wrought iron, render the apparatus as durable 

 as the boiler itself. 



Sees' adjustable attachment for Force Pumps. 



