180 



The Florists' lUview 



DaciHBU 10, 1914i 



SMITH, UNEAWEAVBi & CO. 



•ITUMINOUS %#^##^hB 



Wait End Trust Buildins. PHILADELPHIA 



1 BroadwftT. NEW YORK 

 Wnttins Bnildinc. LEBANON. PA. 

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Simonds Heating & Specialty Coc 



Grand Rapids, Mich. 

 QREBNHOUSB 



ONE POUND PRESSURE 



VACUUM HBATINQ SYSTEMS 



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Greenhouse Heating. 



ATTACmNG A OENEBATOB. 



We are heating a greenhouse, 28x100, 

 by the overhead, downhill hot water 

 system^ with a pipe running to the 

 expansion tank from a 4-inch main di- 

 rectly over the boiler. The top of the 

 main is only about eight inches below 

 the bottom of the expansion tank. Now 

 I wish to attach a mercury generator, 

 and of course I shall be unable to 

 locate the generator between the top 

 of the main and the bottom of the tank. 

 Will good results follow if the generator 

 is located at some point below where 

 the expansion pipe is connected with 

 the mainf A. B. B. 



In order to secure any benefit from a 

 generator, it must be used in connection 

 with a closed system, as a generator 

 really is nothing more than a safety 

 valve and vacuum valve combined. 

 Hence, unless the expansion tank can 

 be put under pressure, no effect will 

 be secured from the generator. How- 

 ever, the generator can be attached to 

 the system, either on the flow or on 

 the return pipe, provided the expansion 

 tank is removed and an air valve is 

 inserted at the highest part of the main. 

 This, however, might cause trouble, 

 since air might collect in the main and 

 hinder the circulation. To correct this 

 diflSculty, unless the expansion tank now 

 in use is capable of being put under a 

 pressure of 100 pounds, I would suggest 

 that it be replaced with a small, riveted 

 steel tank, with a water column on the 

 side and an air valve in the top. With 

 a reasonable amount of attention, the 

 main can then be kept free from air, 

 and by using the circulator the water 

 can be carried under pressure. 



HEATINQ WITH COIL BOILEB. 



Kindly inform me how to heat a 

 greenhouse for tomato growing, 120 feet 

 long, twelve feet to the ridge and five 

 feet to the eaves. I do not wish to use 

 larger than 2-inch flows. The twenty 

 feet at the end nearest the boiler I 

 should like to use for seedlings or cut- 

 tings if necessary, with bottom heat in 

 two of the 5-foot benches. The temper- 

 ature in the district where I wish to 

 build reaches 40 degrees below zero, 

 and I should require a temperature of 

 55 degrees. 



I purpose building a coil of extra 

 heavy 2-inch tubing six feet long and 

 four feet wide inside a fire-brick casing. 

 The tubing will be at the sides, back 

 and top, and the fire inside the tubing, 

 plftying around the tubes at the sides 



SPECIMEN PLANS 



FOR A 



Nodern Heating System 



ara givan in tiia naw 

 catalasua of aii-ataai 



Wilks Hot Water Boilers 



The self -feeding fea- 

 ture keeps an even and 

 continuous fire for 12 

 hours and longer with- 

 out any attention. 

 This makes night 

 firing unnecessary 



Write Today for Your Copy of Our 

 C&talosue. It's Free. 



S. WILKS MFG. CO. 



3523 Sliialds Avanua 

 CHICAGO 



Mention The ReTlew whep yon write. 



IMICO 



Hot Water Boilers 



Made by , . . 



Minois Malleable Iron Cd 



1801-1825 Divcney iioalevard 



CHICAGO 



Are Noted for coel oconomy end 

 results aenerslly 



SIND FOR CATALOOUS 



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Pilley's 

 Combination 

 Flue Brush and 

 Scraper 



By simply turning the rod or handle, 

 the ends contract until it will readily 

 pass into the flue. Then by turning the 

 handle in an opposite direction the cleaner 

 is gradually expanded until it fits the tube 

 perfectly; the brush following leaves the 

 tube absolutely clean. 



Pilley Packing & Flue 

 Brush Mfg. Co. 



612 S. Third St., ST. LOUIS, MO 



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TOMORROW HORNING 



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