Document Jv3pvY0pa3yJk4ee0qz4njVVK

FILE NAME: ZWW^ DATE: : DOC#: W^ DOCUMENT DESCRIPTION:d:Z A MONTHLY MAGAZINE FOR ENGINEERS AND CONTRACTORS CONCERNED WITH COMMERCIAL, INDUSTRIAL AND INSTITUTIONAL AIR CONDITIONING, REFRIGERATION. AIR SANITATION. PIPING. HEATING AND VENTILATION padaied 4 THE INDUSTRIAL PRESS Also publishers of MACHINERY and technical books President ROBERT B. LUCHARS Vice-President and Treasurer EDGAR A. BECKER Secretary ERIK .OBERG tchirmlai Staid CONTENTS FOR JANUARY, 1946 VOLUME 43 - NUMBER 1 Washington News 59 Loring F. Overman Refrigeration for Air Conditioning Aircraft 63 Bernard L. Messinger Convectional Dispersion .69 W. C. L. Hemeon Dust-Proof Regulator 73 Editor CLIFFORD STROCK Air Cleaners for Internal Combustion Engines (Second Part) 74 Leilie Silverman Associate Editor N. N. WOLPERT Assistant Editor WILLIAM FOXHALL Yoloatioatiofrt Dehumidifying and Air Sterilization with Triethylene Glycol Steam Cooker Relined with Stainless Steel Randolph Mockbee Heat and Ventilation in the Design of Dairy Stables--' Reference Section J. L. Strahan 78 80 81 HEATING AND VENTILATING is pub- Reference Data 309-310 88 lished monthly by The Industrial Press at 148 Lafayette'Street, New York 13, N. Y. Air Fills the Bag 89 a Yearly subscription in the United States, Veterans Learn Watchmaking in an Air Conditioned School.... 90 Spain, South America, Mexico, and Can- ada, $2.00; in all other countries, $3.00. Index to H&V's Reference Data, Sheets 1 to 308 y Single copies 30 cents. Entered as second class matter, April 18, 1925, at the Post Office, New York, N. Y., under the act of March 3, 1879. News of Equipment and Materials Abstracts and Reviews 91 94 98 News of the Month 99 4/. e414t#cq 2124e.sektiataa Degree-Days for November, 1945 106 :a Eastern Representative HARRY J. TWINE .3 148 Lafayette Street New York 13, N. Y. 1! Western Representative se G22E8ONRoGrtEh GLa. TSUaRlleNESRtreet er Chicago I, y. Pacific Coast Representative ROBERT H. DEIBLER 403 W. 8th St. Los Angeles 14, Calif. New Catalogs Getting Personal Since the Last Issue Industrial Degree-Days for November, 1945 Canadian Degree-Days for November, 1945 Coming Events Copyright, 1946, by The Industrial Press 110 110 112 126 126 127 388 add THIS MONTH'S COVER MEMBER Audit Bureau of Circulation Associated Business Papers The engineer must view the cow as a heating and air conditioning plant in the design of dairy stables. See an engineer's analysis beginning page 81. NG Air rills the bag WM. B. FOXHALL Assistant Editor HEATING AND VENTILATING CONTROLLED air was the answer in one plant to the problem of packaging powdered asbestos. Arthur A. Gardner put the research department of Breslee Mfg. Co. to work on the problem of filling thousands of cotton bags with asbestos for dummy propelling charges required by the Army for practice firing of the 105-mm howitzer. The problem was complicated in several ways. First, each charge consists of seven bags loaded to specified weights ranging from 1.7 oz to 13.1 oz. Second, the tackiness of the asbestos made hand weighing difficult and prevented the use of gravity feed.machines. Third, the dust of powdered asbestos is a health hazard. Mr. Gardner's engineers designed an assembly line of seven filling machines piped into a master vacuum system which both filled and weighed the bags by air. The operation of filling the bag takes place within an air-tight, box opened on one side by a sliding door, the frame of which is lined with sponge rubber to make an air-tight seal when, the door is closed. The operator clamps the empty bag to a nozzle suspended from the top of the box. This nozzle connects outside the box to a flexible transparent plastic tube about 4 ft long. The open end of the tube is used by the operator in picking up asbestos from a hopper resting on one side of a scale. The other side of the scale carries several small metal plates, the total weight of which perfectly balances the asbestos in the hopper. Each plate represents the exact weight of one filled bag. With 'the scale in perfect balance, the operator removes a single metal plate, throwing the scale Off balance the exact amount necessary to fill one bag. Showing scale arrangement and open door of vacuum box containing bag clamped to end of saran plastic tube. She then inserts the mouth of the tube into the hopper and steps on a treadle to open a valve connecting the tube and fill-box to a vacuum,,,system. Asbestos is drawn from the hopper and deposited in the bag. As soon as the scale returns to balance, the operator closes the valve and the flow of asbestos stops immediately. Breslee engineers estimated that their vacuum- filling system required 450 cfm through the tube. They installed 'a Spencer turbine blower poWered by a 7Y2 hp motor at 3500 rpm, which maintained the required vacuum, with a volume of 600 cfm, more than sufficient for the proper functioning of the system. This vacuum method of precision filling resulted not only in extreme accuracy but also in about 600% increase in production over hand weighing and filling. Still more important, however, was 'the elimination of the hazard to health represented by the manual handling of the finely powdered asbestos. Part of packaging assembly line. Hoppers of asbestos on scales balance boxes of measured weights. As weights are removed one by one, asbestos is vacuum drawn out of hopper into cotton bag through flexible transparent tube to return scale to balance. Foot treadle controls vacuum. HEATING AND VENTILATING, JANUARY, 1946 ALPHABETICAL INDEX OF ADVERTISERS A Ael:stiin Corporation 44 Air Conditioning Products Co. 31 Air Devices, Inc. 115 Airtemp Div. Chrysler Corp. 49 Airtherm Mfg. Co. 111 Alco Valve Co. 39 American Air Filter Co., Inc. 54 American Brass Co. 35 Automatic Products Co. 114 B Badger Corporation Baldwin-Hill Co. Bethlehem Steel Co. Bryant Heater Co. Buffalo Bolt Co. Buffalo Forge Co. . Byers, A. M., Co. 121 118 34 8-9 12 23 1 C Carey, Philip, Mfg. Co. 47 Century Electric Co. 55 Chrysler Corporation 49 Clarage Fan Co. 45 Classified Advertising 128 Condenser Service & Engrg. Co , Inc. 117 Connor, W. B., Engineering Corp 126, Crane Co. 32 Crown Iron Works Co. , 117 Curtis Refrigerating Mch. Div. of Curtis Mfg. Co. 50 D Delco Motors Div., General Motors Corp. 29 Demuth, Charles, & Sons 115 Detroit Lubricator Co. 48 Dravo Corporation 36-37 Dunham, C. A., Co. 52 E Electric Auto-Lite Co. 46 Elgo Shutter & Mfg. Co. 113 Extended Surface Div., David E Kennedy, Inc. 33, Farr Company 11 Fitzgibbons Boiler Co., Inc. 24 Frick Company 120 General Controls Co. 124 General Electric Co. 58 Grant Wilson, Inc. 123 H Hays Corp. 121 Henry Valve Co. ....Inside Back Cover Howell Electric Motors Co. 60 I Ice-Air Conditioning Co., Inc. 115 Ingersoll Steel & Disc Div., Borg- Warner Corp. 51 J Johnson Fan & Blower Corp 27 Johnson Service Co. 57 K Kling Bros. 125 Korfund Company, Inc. 116 Lewin-Mathes Co. 41 Marley Co., Inc 127 Marsh Heating Equipment Co. 10 McDonnell & Miller, Inc. ..Back Cover McQuay, Inc. 6-7 Meier Electric' & 'Machine Co 113 Minneapolis-Honeywell Regulator Co. 43 Moline Manufacturing Co. 30 N Nash Engineering Co. 62 'Nelson Sales Corp. 15 Niagara Blower Co. 121 0 Oakite Products, Inc. 127 O'Connor, W. B., Engrg. Co. 126 P Patterson-Kelley Co., Inc. 111 Peerless Pump Div., Food Machin- ery Corp. 11 Petroleum Heat & Power Co. 20 Propellair, Inc. 28 R Research Products Corp. 26 Revere Copper & Brass, Inc. 105 Reznor Manufacturing Co..' 117 Ric-wiL Corporation, Inside Front Cover S Sarco Co., Inc. 25 Sarcotherm Controls, Inc. 19 Smith, H. B., Co., Inc. 107 Surface Combustion Corp. 13 T Taylor Forge & Pipe Works 21 Thrush, H. A., & Co. 56 Torrington Mfg. Co. 119 Trane Co.. 4-5 Triplex Heating Specialty Co 122 Tuttle & Bailey, Inc. 38 U United States Air Conditioning Corp. 18 United States Gauge Div., Ameri- can Machine & Metals, Inc 531 U. S. Machine Corp. 42 w Want Advertisements 128 Waterloo. Register Div. 113 Webster, Warren, & Co. 2 White-Rodgers Electric Co. 109 Whitlock Manufa,Gturing Co. 119 Wilson, Grant, Inc. 123 Wing, L. J., Mfg. Co. 14 Worthington Pump & Machinery Corp. 16 Y Yarnall-Waring Co. 22 York-Shipley, Inc. 17 Youngstown Sheet & Tuba Co 40 CLASSIFIED ADVERTISING Non-display faodrvnertlseemanerialLi. mb; Payable in advance. winorudx peeurst iigar FIELD ENGINEERS: Leading manufacturer has openings for experienced engineers in Refrigeration, Air Conditioning and Heating. College graduates with Sales Engineering Application knowledge desirable. Salary, car and traveling expenses provided. Write,.giving full background and qualifications in first letter. Write Box No. 490, HEATING AND VENTILATING,,148 Lafayette Street, New York 13, N. Y. MECHANICAL ENGINEER wanted by wellknown manufacturer of heating equipment for research and development. Experience with combustion and particularly with small gas fired appliances desirable. Location New York vicinity. Please state age, education, experience. Replies held confidential. Box No. 485, HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y. HOW TO SELL THE CHICAGO AND MIDDLE WESTERN MARKET Live wire sales representative with 16 years successful background, available to a manufacturer of Malleable and Cast. Iron Pipe Fittings, Steel Pipe Nipples, Cast Iron Soil Pipe or Copper Tubing and Brass Pipe. I have or-, ders on hand, also a very broad acquaintance with key buyers of, and major users of, these products in this' territory, and my sound sales plan will assure maximum results. If your company has these meritorious products and is deserving of optimum sales distribution, it will pay you to consider strongly my comprehensive sales-representation for your coverage of this territory. Can give you a minimum guarantee of set dollar volume or you need not pay me one penny commission if I fail to meet quota during 90 day trial period. Write or Wire mix No. 481, HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y. SALES ENGINEER; For National Accounts. College Graduate' with experience in Air Conditioning desirable. Vacancy existing in established manufacturing company operating on nation-wide basis. Write, giving full background and qualifications, in first letter. Box No. 488, HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y. EXECUTIVE POSITION WANTED by grad- uate mechanical engineer with 25 years engi- neering experience in building construction, heating, ventilating, air conditioning and commercial refrigerating equipments. Professional licensee. Location preferably Eastern Central Seaboard. Salary $7,000. Box No. 487, HEATING AND VENTILATING, 148 Lafayette Street, New York 18, N. Y. SAVE vital trucks, gasoline and tires. Reduce costs. Not too late to start automatic fuel oil truck deliveries. Write us. Degree Day Systems, 5106-39th Avenue, Woodside, N. Y. WANTED--High class installation and service manager for complete heating systems, oil burners and air conditioning. If you have the ability communicate with us at once. Mechanical Devices Co., Inc., 141 Oakland Street, Trenton, New Jersey. Trenton 8208. WE ARE interested in securing the services of a Designing Engineer familiar with Low Pressure Boilers for commercial and household use. Permanent connection. Replies held confidential. Send letter stating age, draft status, education and past experience. Statement of availability required. Box 430, HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y. DISTRICT. REPRESENTATIVE: Leading manufacturer has openings for seasoned men in Heating, Cooling and Commercial Refrigeration. Specialty selling and dealer selection knowledge desirable. Salary, car and traveling expenses provided. Write, giving full background . and qualifications in first letter. Box No. 489, HEATING AND VENTILATING, 148 Lafayette Street, New York 18, N. Y. POSITION WANTED Army Captain, Corps of Engineers, seeks responsible position. 6 years experience in engineering sales, estimating and design of heating,. ventilating and air conditioning. References on request. Box No. 483, HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y. POSITION WANTED--Gnaduate of an AirConditioning and Electrical Refrigeration School wishes further practical training with a reputable firm. Location and salary secondary. Single, Honorably discharged veteran. Box No. 484, HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y. WANTED-LMan with experience in sales engineering to manage branch office at Baltimore. Company distributes all types of fans, blowers and pumps. Distribution of equipment to be handled through established jobber outlets. Fan line includes all types of propeller, axial flow and special industrial fans. Centrifugal line includes all types of air conditioning fans, also all types of high pressure blowers. Applicant shall have had experience in equipment of this class. Salary and bonus. Box No. 486, HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y. 128 JANUARY, 1946, HEATING AND VENTILATING