86 



ThcWccfcly Florists' Review. 



SCPTBMBBB 7, 1011. 



What is the Host Vital Point in Grate Construction? 



Grate makers and users agree that the most important point is to keep 

 the air spaces open as long as possible under all conditions. ■**' 



We {guarantee to keep the air spaces of the 



MARTIN ANTI-FRICTION ROCKING GRATE 



open longer under any conditions than can be done by any other grate 

 in existence. 



The hottest fire you can build will not warp a "Martin" and it can be 

 installed without disturbing the brick work. 



We refer to Peter Reinberg. Emil Buettner, Bassett & Washburn, Wietor Brg>s., Adam 

 Zender. Sinner Bros., Albeit Dickinson Co.. and many others. 



Write for testimonials and full particulars. 



343 So. Dearborn St. 

 CHICAGO 



NARUN GRATE CO., 



Mention The Review when you write. 



thing in arranging the pipes is to have 

 the two boilers connected as directly 

 as possible, so that, whether one or 

 both are used, the connection of the 

 flow pipes from the drum will be as 

 <lirect as possible with both of the 

 boilers. For hot water the arrange- 

 ment for connecting the returns should 

 be practically identical with that used 

 for the flows. 



STEAM OR HOT WATER? 



I have a hot water boiler with a 

 grate two feet six inches in diameter. 

 How many square feet of glass, in 

 roof and sides, would it be safe to 

 heat with this boiler in zero weather, 

 if the required temperature is .50 de- 

 grees? I also have a steam boiler 

 with a grate surface 18x24 inches. 

 How many square feet of glass would 

 it heat to the same temperature? I 

 wish to pipe a greenhouse, 20x86. If 

 I heat it with hot water, how many 

 rows of 3-inch boiler tubes will be 

 needed to heat it to 50 degrees? How 

 many rows of steam pipes, and what 

 size, would suflice for the same house? 

 I am located in Ehode Island. J. C. 



The hot water boiler with a grate 

 two feet six inches in diameter will 

 answer for about 6,000 square feet of 

 glass. The steam boiler with a grate 

 18x24 inches should not be used for 

 more than 2,000 square feet of glass. 

 A house 20x86 feet can be heated by 

 means of eight runs of 3-inch boiler 

 tubes. Seven or eight 1%-inch steam 

 pipes would suffice for the same house, 

 if a temperature of 50 degrees is de- 

 sired. 



A WISCONSIN RANOR 



At present we have six greenhouses, 

 heated by hot water, and we intend 

 to change the heating system to steam. 

 We also intend to build six more 

 houses, adjoining the present ones. The 

 completed range will consist of an 

 east and a west section, separated part 

 of the way by the boiler room and 

 part of the way by only a passage, and 

 each section will contain six houses, 

 all running east and west. We prefer 

 to use two boilers and should like to 

 know what would be the necessary 

 horse-power of each. Please state, also, 

 how many runs of pipe will be needed 

 in each house. We want the heating 

 outfit to be ample enough so that there 

 will be no trouble in maintaining the 

 proper temperature in the coldest 

 weather. We inclose a diagram of the 



The Users 

 Of The.... 



SaccesHors to thn 

 John Davis Company 



Hughson Regolating Valve 



are all satisfied with the results it has given, and many 

 duplicate < rders is the proof. This Valve nelU main- 

 taUi a steady pressure on the low side, no matter 

 how the initial pressure fluotuates. By carrying 40 or 50 

 pounds pressure on the boiler and setting the valve to 

 carry 5 or 10 pounds on the line, you always have a 

 reserve to fall back on in rase of a sudden drop in tem- 

 perature. Our ne\7 oataloirue is lust out and if 

 you ront<>mplate making any cnanges you had better 

 gel one— it is yours for the asking. 



We Also Make Traps and Other Devices. 



HUGHSON STEAM SPECIALTY CO. 



5021-50S3 S. State Street, CHICAGO 



Mention The Review when you write. 



IMICO 



Hot Water Boilers 



Made by 



ILLINOIS MAUEABLE IRON CO. 



1801-1825 Diversey Boulevard 



CHICAGO 



Are noted for coal economy and 

 fl^od results generally 



SKND FOR CATALOGDK 



HE BURNHAM 



HOT 

 WATER 



OR 



STEAN 



66 Sizes 



Heats from 

 1850 to 27.000 

 square feet. 



Send for 

 Catalogue. 



|ord*"opurnham(a 



Irvingto/t, N.Y ' 



New Tork 

 Boston 

 Pliiladelpliia 

 Ctaioaco 



Mention The Review when you write 



houses, with a statement of the di- 

 mensions and the diflFerent tempera- 

 tures required. H. C. 



The sketch shows four houses 13 

 feet 8 inches by 125 feet and two 

 houses 15 feet 6 inches by 125 feet, 



IMPROVED RETURN TUBULAR 

 FIREBOX BOILER 



Johnston Heating Co. 



131 B. 26th St.. New York City 



Mention The Review when you write. 





.j/v,-.^ 







