CLAY WORKING INDUSTRIES. 



215 



a large flow of hot air which is conducted to the building in underground 

 flues and distributed by large galvanized iron pipes. The system, while 

 new to the sewer pipe business, has the elements of success in it. The 

 distribution of air should be around the circumference of the building, 

 and the fan house ought to be placed in communication with the top of 

 the building so that the air could be worked over and over without the 

 useless expense of heating up a fresh supply of air all the time. Some 

 difficulties are likely to occur in this system in regard to cracking the 

 wares nearest the vents of the hot air supply, which can be remedied by 

 providing more and smaller vents so as to make no. decided currents. 



The kilns are fifty-two in number and operated by four crews set- 

 ting, and four crews drawing ; the kilns are round down drafts 28 ft. 6 in. 

 in diameter with one of the best kind of fire places and a good arrange- 

 ment of "bottom:" The burning is all under the control and supervision 

 of one man. 



The generation of power is accomplished in a magnificently equipped 

 power plant ; one engineer and one foreman do all the work for the 

 daily production and maintenance of seven hundred and fifty horse- 

 power. The Brightman mechanical stoker and a system of conveyors 

 and elevators do all the handling of coal, which is only shoveled once, 

 from the railroad car to the coal bin. 



The following table gives the only statistical inform .tion of the 

 sewer pipe business which was attainable. 



TABLE X. 

 LIST OP SEWER-PIPE FACTORIES OF OHIO. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 



Haydenville Mining & Mfg. Co 



Jefferson Sewer Pipe Co 



John Francy's Son's & Co 



The Great West'n Fire Clay Co. 



Ohio Valley Fire Clay Co 



Calumet Fire Clay Co 



Excelsior Sewer Pipe Co's 



Freeman Fire Clay Co 



Empire Sewer Pipe Co 



N. U. Walker & Co 



Jos. Lythe & Sons 



Knowles Taylor & Anderson... 

 Royal Clay Manufacturing Co. 



Diamond Fire Clay Co 



Uhrichsville Fire Clay Co 



State Line Sewer Pipe Co 



United States Fire Clay Co 



Ohio Sewer Pipe Co 



Camp & Thompson 



Crown Fire Clay Co 



Hill Sewer Pipe Co 



Akron Sewer Pipe Co 



Buckeye Sewer Pipe Co 



Summit Sewer Pipe Co 



Robinson Bros. & Co 



George P. Sperry 



Camp & Thompson 



National Sewer Pipe Co 



Columbus Sewer Pipe Co 



Cincinnati Sewer Pipe Co 



Haydenville 



Toronto 



. << 



Eliottsvi'lie 



Freeman's Station.. 



Empire 



Walker's Station 



Wellsville 



East Liverpool 



Midvale 



Uhrichsville 



East Palestine 



New Lisbon 



Greentown 



Dover 



Akron 



Talmadge 



Cuyahoga Falls 



Barberton 



Columbus 



Cincinnati 



Fire c ays. 



Shales . 



Fire Clay. 



2 



15 



2 



10 



2 



16 



2 



17 



2 



10 



5 



21 



1 



8 



3 



15 



2 



8 



4 



23 



2 



14 



2 



15 



5 



36 



2 



10 



2 



10 



.1 



12 



1 



12 



1 



12 



1 



9 



2 



21 



1 



11 



2 



20 



•_> 



13 



2 



12 



^> 



16 



1 



9 



2 



16 



6 



52 



•> 



12 



1 



4 



