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Finish 



All James Ventilators are coated with a high-grade aluminum paint over the heavily 

 galvanized steel, making a beautiful satin finish. 



Sizes and Construction 



Made in two sizes, Ventilator No. I having barrel 24 inches and Ventilator No. 2 

 having barrel 30 inches in diameter. 



The heights are I ft. 8 in. in the 24-in. diameter; 1 2 ft. 3 in. for the 30-in. 



The 24-in. ventilator has a base 50 x 50 inches over all on cornice by 11 inches 

 high; weight of ventilator crated 260 lbs. The 30-in. ventilator has a base 60x60 

 inches by 33 inches high; weight of ventilator crated 380 lbs. 



SPECIFICATIONS 



(See page 2861 



1 . Double cone steel top, solidly fastened on. 



2. Galvanized pipe ''/j^.-inch outside diameter. This pipe passes into cone 6, to 

 which it IS securely soldered, and is also threaded into a malleable casting mounted inside 

 of revolving hood (7). 



3. Full bodied, double strength stamped zinc. Vane securely fastened to pipe and 

 always keeps opening (8) to the wind. 4. Malleable Arrow. 



5. Glass ball five inches in diameter. Extra heavy. 



6. Heavy galvanized cone, adds to appearance, strengthens pipe which carries vane. 



7. Revolving hood, containing intensifier and hardened steel frictionless bearing. 

 This bearing is entirely protected from the elements and no rain, snow or ice can inter- 

 fere with the motion of the hood. 8. Opening into intensifier. 



9. Heavy galvanized storm bands, stiffened greatly by ornamental beading. This 

 band with skirts inside keeps out rain and snow. 



1 0. Heavy steel wiring, amply strengthening storm band and all skirts. 



I I . Skirt greatly assists in aiding the circulation of air. 



1 2. Heaw gab anized steel body strengthened by galvanized steel angle irons which 

 are thoroughly braced. (See Fig. 3, page 278.) 



I S. Special alloy non-corrosive rivets, used throughout entire structure. 



14. Heavy galvanized steel body strengthened by standing seams (15). 



I 6. The fastening at this point is the strongest possible, extra heavy galvanized angles 

 to which the body is securely bolted by special non-rusting bolts and nuts. 



1 7. Fleavy galvanized steel cornice, made by us from our o\vn designs. 



I 8. Corners are made from extra heavy galvanized steel. Folded and locked into 

 side and top sheets to form a solid and tight structure. 



20. Galvanized steel flashing, so constructed as to leave the least work for the 

 workman placing the ventilator on the roof. 



Four long bolts, with nuts and washers, are furnished to bolt ventilator to the roof. 

 All openings are protected by galvanized bird-proof netting. 



Lightning rods should be coursed around the ventilators — never through a ventilator. 

 A bond should be made between the rod and ventilator, preferably by soldering rod to 

 outside corners of base, making a permanent positive metal contact. 



