Document rxDEx34LoybjmoeYMXQv9Gm3q

Ventilators W. F. Hirschman Co., Inc. Le Roy, New York Manufacturers of EFFICO Rotary Ball Bearing (Oil Flooded) Roof Ventilators Product--Effico Fan Equipped Rotart Ball Bearing (Oil Flooded) Roof Ventilators (Patented). Construction and Principle of Operation--Hie Effico rotating cowl exterior is covered by wind propelled blades; the interior by suction blades. There are no moving parts. The Effico shaft rotates on ball bearings, fitted with clock precision in solidly enclosed dust-tight and oil-tight housings, and is fiooded in inches of non-freesing oil (furnished by us); no oiling required for years (proven), and the Effico is absolutely noiseless. Great Air Volume Exhaust at Low Wind--All Efpicos will draw con siderable air at a 1-tnile breeze (an apparent calm) without stack or heat assistance. The 30-in. size will rotate (standing start) at 0.7-oz. pressure, Yi mile breeze. Cowl outlet is ova 50 per cent larger than its stack area which is ample, as no wind enters ventilator to gain the so-called siphonage effect. Suction fan is same size as rotating cowl (note dimension chart). Thus each Effico is equipped with fan over 50 per cent greater in diameter than its stack area. Fan pulls air up stack at even the slowest turning movement and wind blowing across the outlet adds to its efficiency. - Symmetry--The Effico has artistic lines and pleasing appearance. Lowest in height of rotary ventilators by over 50 per cent average. Note dimension chart. Weatherproofness--The Effico rotary ball-bearing ventilator operates during all kinds of weather--rain, ice. snow or sleet does not affect or hamper its exhausting. 'No drip pans or bird screens are needed. Effico Rotary Ball-Bearing Ventilator Installation Effico Standardized Ventilators Gage of Dimensions. In. A BC D Galvanized Net Cop- Steel Weight per Code E Cowl Base 02. 6 10 44>'A/? 51/2 11 13 16 201/? 26 26 26 26 10 18 14 Sheck 14 bachem 12 5 14 21% ?1 24 24 25 14 Scene 18 7 15/2 27 23 24 10 25 42 30 24 24 24 24 38 95 16 Saturn 18 Shake Gage of Dimensions, In. Galvanized ` Net Cop Steel Weight per A B C D E Cowl Base Lb. Oz. 30 12 27 36 12 31 42 19 37 48 19 40 54 19 44 60 19 48 66 ?5 53 72 30 57 84 30 58 % 30 63 52 32 62 - 32 68 43 76 43 86 43 98 43 I03V? 49 114 54 130 54 153 60 22 22 22 22 22 20 20 20 18 18 20 20 18 180 24 18 300 24 18 370 24 18 525 24 18 650 18 700 18 750 16 900 16 1025 Code Sank Sergeant Serpent Serve Sham Shawl Sunk Shop Slave Shekel Detail of Effico Rotary Ball-Bearing Ventilator Capacities of Effico Rotary Ball Bearing Ventilators Cubic Feet of Air Exhausted Per Minute Wind Ve Temperature difference in degrees Fahrenheit in building and outside locity mi. per 0 | 10 | 2D | 30 0 | 10 | 20 ] 30 0 | 10 | 20 | 30 hour 12-in. Ventilator 18-in. Ventilator 24-in. Ventilator 5 2951 3651 430 465 500 740 650 925 900 1325 1500 1590 10 14 342 432 500 520 755 970 1070 1135 1325 1725 1900 2025 40Cn 500| 530 580 990 1080 1160 1270 1600 2000 2200 2300 30-in. Ventilator 36-in. Ventilator 42-in. Ventilator 5 14001 20801 2386 2600 2075 3000 3375 3650 2770 4090 45501 4950 10 14 2100 2925 3050 3250 2960 3880 4275 4550 3975 5175 5700 6000 2560| 3200| 3175 3525 3645 4365 4750 4935 4900 6000 66001 6900 48-in. Ventilator 54-in. Ventilator 6U-in. Ventilator . 5 10 36501 5300 6000 6500 4580 6600 76001 8200 5700 8300 9400 10200 5300 7100 7600 8100 6625 8625 960010000 8280 10900 12000 12700 14 6445 8050 8900 9200 8000 I000( 11000*11600 10000 12600 13800 14500 72-in. Ventilator 84-in. Ventilator 5 8200 11800 13000 14800 11000 16300 16500 20000 "Effico" 10 11900 15500 17000 18300 16300 21600 23600 25000 The Highest De 14 14400 18000 19800 20800 19600 25000 27000 28500 veloped Ventilator . Above capacities are guaranteed and conservative. They are based on official test made at Carnegie Institute of Technology, Pittsburgh, Pa., and a great many by ourselves on special and regular installations. 506 Ventilators The Iona Ventilator Company, Inc. 2821 W. Dauphin St. PHILADELPHIA, PA. Designers and Manufacturers of Ventilators for 20 years "XIT" and "IONA" Ventilators Adapted to Factories, Schools, Theatres, Hospitals. Public and Farm Buildings. "XIT" VENTILATORS Vent Size In. Out side Dia. In. Gauge Height Iron In. or Meta] Approx. Finished Weights Lbs. Gauge Cop per Oz. List Prices Four basic principles are incorporated in the de sign and construction ol "XIT" Ventilators: 1. Largest area of vertical exits from head. 2. Greatest total exit area from head. 3. No external air can enter ventilator head. 4. Principle of action or 6 IOV4 8V, 7 IW7 10'/, 8 141/4 11 9 I6>/, 12 10 16 13'/, 12 2l'/z liV, 14 25 16# 15 26'/, 17 16 28V4 18'/, 18 30 191/2 20 34 22'/, 22 39/, 24 24 43 26 26 46 28 28 50 i30 30 54 32 32 57 34 34 60 36 36 40 64 71V. 31% 42 42 77 45 44 79 48 48 86 51 54 97 57 60 107 63 66 118 69 72 129 75 26 26 26 26 24 24 24 24 22 22 22 22 22 22 22 22 22 22 22 20 20 20 20 18 18 16 18 5 6 8 10 12 16 28 31 34 43 50 55 61 84 105 131 146 160 178 238 275 305 350 615 757 880 980 16 $ 12.00 16 14.00 16 16.00 16 18.00 16 20.00 16 24.00 16 28.00 18 30.00 18 32.00 18 36.00 18 40.00 18 44.00 18 48.00 20 52.00 20 56.00 20 65.00 20 80.00 20 100.00 20 120.00 20 180.00 20 190;00 20 200.00 20 240.00 24 300.00 24 360.00 24 420.00 24 480.00 suction is like that of chimney or stack, which is EXHAUST DATA CARD OF "XIT" VENTILATORS doubled by a second or internal band, making two points of suction, always to the lee side of head thereby greatly increasing action Terns. Wind Inside Velocity and Mi. per Outside Hour 12 Cubic Feet of Air Through Ventilator per Hour 14 16 18 20 21 | 30 36 . 40 | 48 through ventilator. Guaranteed exhaust and storm proof. Liberal discounts. Damper and base prices 70 70 70 70" 70" 3 5 10 15 20 20.546 27,783 24.460 33.075 54.244 46,305 47.941 64,827 67.117 90.757 36,352 45,960 43.27q 54,714 60.53d 79.599 84.750 III,438 U8.650l156.013 50.604 60.480 84,672 118.540 165.9561 81.8111127.008 193.287 97.036] 151.200 218.198 125.850211,680 305.477 176,190296,352 427.667 246.666(414.892 598.733 225792 268.800 376.320 526,840 737,587n 326.044 388.147 543.405 760.767 ,065.073 on request. Increase in velocity of wind over five miles, increases exhaust 8 per cent per mile. Higher inside temperature increases exhaust 1 7-10 per cent per degree. In elevation over 25 feet, exhaust increase varies as square root of height. IONA" VENTILATORS 507