. October 8, 1908. ', 



( '■.■ 



The Weekly Florists^ Review* 



69 



WILKS 



Hot Water Boilers 



Are Best for 



Small Greenhouses, etc.... 



.... 



NO NIGHT FIREMAN REQUIRED 



With Our 



Self-feeding Hot Water Boilers 



Keep an even and continuous fire for ten hours and longer 



without any attention 



VERY ECONOMICAL IN FUEL 



Send for Our €h>eenhouse Catalog; 



S. WILKS MFC. CO., 



3523 Shields Ave. 



CHICAGO 



Mention The Review « hen you write. 



ting a hot water system under pressure. 

 It has been done by connecting with the 

 city water mains, but this is inexpedient 

 wWere the city pressure is too high or 

 variable. Attempts have been made to 

 control the pressure with automatic 

 valves. The Honeywell plan is to employ 

 a column of mercury. The "generator" 

 is attached to the pipe leading to the 

 expansion tank and seals the system as 

 soon as the water begins to heat. The 

 expansion of the water under the influ- 

 ence of the fire in the boiler produces 

 the pressure. As the water expands it 

 presses through the generator, lifting the 

 column of mercury until, at the top of 

 the tube, the quicksilver falls through an 

 outer tube and the water is free to pass 

 on to the expansion tank, thereby limit- 

 ing the pressure to the determined point. 



The heat generator may be used in 

 connection with any boiler designed for 

 low pressure hot water and the makers 

 state that many boiler manufacturers 

 recommend it. It has been applied to a 

 number of greenhouse plants and a spe- 

 cial generator for greenhouse use, manu- 

 factured under Honeywell patents for the 

 Kroeschell Bros. Co., Chicago, was given 

 a certificate of merit at the recent con- 

 vention of the Society of American Flo- 

 rists at Niagara Falls. 



A NOVEL HEATING SYSTEW. 



Quite a radical change, over the old 

 method of installing a steam valve in the 

 supply of each steam coil for greenhouse 

 heating, and often in each pipe or each 

 coil, is being installed in the range of 

 ten bouses, each 500 feet long, for the 

 Grand Rapids Greenhouse Co., Grand 

 Rapids, Mich. 



This steam heating system is to be 

 operated with a pressure in the steam 

 mains of not to exceed one pound, and 

 probably most of the time with eight 

 ounces pressure, although the coils are 

 forty-four in number and with from two 

 to six pipes in a coil, and each coil 250 

 feet long, liiere are no steam valves 



n 



Tis true— we told Meyer and 

 Meyer told you. 



F.W.MEYER, 



Riverside Grkknhodses, 



Box 1. R. P. D. 1. 



Kalauazoo, Mich., 7-7-08. 



MoBEHEAD Mfq. Oo , Detroit, Mich. 



Dear Sirs:— If the Morehead Return Trap cost ten times what you ask for it, it would 

 be cheap when time, labor and cost of repairs are consid- 

 ered, in comparison with the steam pump I had installed 

 before Kettin^ your Trap. I cannot praise i( too highly and 

 I recommend it to everyone who talks steam. Yours, 



F. W. MEYER. 



MOREHEAD RETURN STEAM TRAP 



Manufactured by 



MOREHEAD MF6.C0.. Grand ^i^^rA.e.. Detroit, Mich. 



Write for Florists' Booklet. 



Mention The Review when you write. 



I Ii!iVb«uiiw?i ': Unco 



} |i,,iM"(l • < irfU, .-.VHR: 



= f „ i iUAnp ■ 





WN^^ 



IMICO 



Hot Water Boilers 



Made by 



ILLINOIS MALLEABLE IRON CO. 



539 Diversey Boulevard, CHICAGO, 



Are noted for coal economy and 

 fl^ood results g^enerally. 



8KND FOR CATALOG. 



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whatever installed in the supplies to any 

 of these coils. 



The heat regulation is by means of 

 thermostats, which control the heat to 

 the degrees at which the thermostats are 

 set, the power for such control being in 

 the system itself, with no inde|;cndent 



piping. All of the large steam mains, 

 return mains, etc., are under the surface 

 of the ground in a trench, so that no 

 supports are necessary, and the pipes are 

 out of the way. The steam main from 

 the boiler is over 350 feet long, as the 

 boilers are quite a distance irom the 



