Document JJ3J4ERbp4Z4vwmVMMDYVx5yO

FILE NAME: Yarnall (YAR) DATE: 1946 Jan DOC#: YAR001 DOCUMENT DESCRIPTION: Trade Publication Article ING A MONTHLY MAGAZINE FOR ENGINEERS AND CONTRACTORS CONCERNED WITH COMMERCIAI., INDUSTRIAL AND INSTITUTIONAL AIR CONDITIONING, REFRIGERATION. AIR SANITATION, FIFING. HEATING AND VENTILATION PulliiUed luf, TH E INDUSTRIAL PRESS A lio publishers of M ACHINERY and technical books President ROBERT B. LU CH A RS Vice-President and Treasurer EDG^R A. BECKER Secretary ERIK OBERG Zit&Ual StajJi 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 P a rt).. 74 Leslie Silverman Associate Editor N. N. W OLPERT Assistant Editor WILLIAM FOXHALL Pultlukintf. 9in^mmaiicM Dehumidifying and A ir Sterilization with Triethylene G lyco l... 78 f * Steam Cooker Relined with Stainless Steel..................................... 80 / Randolph Mocktee Heat and Ventilation in the Design of Dairy Stables-- Reference Section ......................................................................... 81 J. L. Strahan H EATIN G AN D 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 Yearly subscription in the, United States, Spain, South America, Mexico, and Can Veterans Learn Watchmaking in an Air Conditioned School____ 90 i- ada, $2.00; in all other countries, $3.00. Index to H&V's Reference Data, Sheets 1 to 308........................... 91 Single copies 30 cents. Entered as second y class matter, April 18, 1925, at the Post News of Equipment and Materials.................................................... 94 Office, New York, N. Y., under the act of March 3, 1879. Abstracts and Reviews......................................................................... 98 AdventUiny PepA&imiatiuel News of the Month......................................................'.........................' 99 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 G EO RGE G . TURNER 228 North La Salle Street er Chicago I, III. Pacific Coast Representative y* ROBERT H. DEIBLER . 403 W . 8th St. Los Angeles 14, Calif. New Catalogs ......................................................................................... 110 Getting Personal .................................................................................. 110 Since the Last Issue.............................................................................. 112 Industrial Degree-Days for November,- 1945..................................... 126 Canadian Degree-Days for November, 1945..................................... 126 Coming E v e n t s ................. .................................................................... 127 Copyright, 1946, by The Industrial Press J. an 388 oda THIS MONTH'S COVER MEMBER Audit Bureau of Circulation Associated Business Papers The engineer must view the eow as a heating and air conditioning plant in the design of dairy stables. See an engineer's analysis beginning page 81. NG Air hits the bag WM. B. FOXHALL Assistant Editor H eating axu 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 con nects outside the box to a flexible transparent plastic : tube about 4 ft long. The open end of the tube is u^ed 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 iii the hopper. Each plate represents the ex'act weight of one filled bag. X With `the scale in perfect balance, the operator 1 removes a single metal plate, throwing the scale off Lbalance 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 con necting 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 vacuumfilling system required 450 cfm through the tube. They installed a Spencer turbine blower powered by a 7 /xi 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 V E N T IL A T IN G , JAN U ARY, 1946 ALPHABETICAL INDEX OF ADVERTISERS A Aemfl.n Corporation ..................... 44 Farr Company ............................. 11 Air Conditioning Products Co. ... 31 Fitzgibbons Boiler Co., Ine............ 24 Air Devices, Inc............................. 115 Frick Company............................. 120 Airtemp Div. Chrysler Corp.......... 49 G Airtherm Mfg. Co........................... I l l General Controls Co....................... 124 Alco Valve Co................................... 39 American Air Filter Co., Inc......... 54 General Electric Co........................ 58 American Brass Co.......................... 35 Grant Wilson, Inc.......................... 123 Automatic Products Co.................. 114 H B Hays Corp...................................... 121 Henry Valve Co........Inside Back Cover Badger Corporation...................... 121 Howell Electric Motors Co........... 60 Baldwin-Hill Co............................. 118 Bethlehem Steel Co.......................... 34 Bryant Heater Co............................. 8-9 Ice-Air Conditioning Co., Inc........ 115 Buffalo Bolt Co................................ 12 Ingersoll Steel & Disc Div., Borg- Buffalo Forge Co............................ 23 Warner Corp.............................. 51 Byers, A. M., C o ........................... 1 J C Johnson Fan & Blower Corp......... 27 Carey, Philip, Mfg. Co................... 47 Johnson Service C o ...................... 57 Century Electric C o...................... 55 Chrysler Corporation................... 49 K Clarage Fan Co............................. 45 Kling Bros............... ;.................... 125 Classified Advertising.................... 128 Korfund Company, Inc.................. 116 Condenser Service & Engrg. Co., L . Inc........................................... 117 Lewin-Mathes Co........................... 41 -Cpnnor, W. B., Engineering Corp.. 126, Crane Co......................... ............... 32 M Crown Iron Works Co.................... 117 Marley Co., Inc................'............. 127 Curtis Refrigerating Mch. Div. of Marsh Heating Equipment Co. . . . 10 Curtis Mfg. Co............................ 50 McDonnell & Miller, Inc. . .Back Cover D McQuay, Inc. ..........................;. .. 6-7 Meier E lectric'* Machine Co....... 113 Delco Motors Div., General Motors Minneapolis-Honeywell Regulator Corp............................................ 29 Co.................................. .'............ 43 Demuth, Charles, & Sons................. 115 Modine Manufacturing Co............. 30 Detroit Lubricator Co.................... .48 Dravo Corporation....................... 36-37 N Dunham, C. A., Co. ...................;. 52 Nash Engineering Co. ......... ........ 62 E Nelson S.ales Corp............. `.......... 15 Niagara Blower Co........................ 121 Electric Auto-Lite Co. ................... 46 Elgo Shutter & Mfg. Co....................113 0 Extended Surface Div., David E. Oakite Products, Inc.............. 127 Kennedy, Inc.................... '......... 33 . O'Connor, W. B., Engrg. Co............. 126 P Patterson-ICelley Co., Inc............. Ill] Peerless Pump Div., Food Machin ery Corp..................................... 11$ Petroleum Heat & Power Co........ Propellair, Inc............................... R Research Products Corp................ Revere Copper & Brass, Inc. . . . . . 1059 Reznor Manufacturing C o . 1 1 7 J Ric-wiL Corporation, Inside Front Cover! S Sarco Co., Inc.................................. 25| Sarcotherm Controls, Inc................ 191 Smith, H. B., Co., Inc...................... 107| Surface Combustion Corp............... 13f T Taylor Forge & Pipe Works........ Thrush, H. A., & Co................. Torrington Mfg. Co..........................1191 Trane Co............................... Triplex Heating Specialty Co........: Tuttle & Bailey, Inc...................... * U United States Air Conditioning Corp............................. United States Gauge Div., `Ameri can Machine & Metals, Inc........ 531 U. S. Machine Corp...................... W Want Advertisements .................. 128i Waterloo- Register Div.......................118f Webster, Warren, & Co................ 21 White-Rodgers Electric Co..............109f Whitlock Manufacturing Co............ 1191 Wilson, Grant, Inc.............................123j Wing, L. J,, Mfg. Co...................... u 'i Worthington .Pump & Machinery Corp.......... .................................. 16 j Y Yarnall-Waring Co........................ York-Shipley, Inc........................... 171 Youngstown Sheet & Tube.Co, . . . 40i 4-s| 181 CLASSIFIED ADVERTISING iTon-display advertisement# 10 cent# a, word per insertion. P(Naoyacphiearigne afdovrannacme.e and address*) M-ini*nmw (diane 7$.2*00. FIELD ENGINEERS: Leading manufacturer has openings for experienced engineers in Re frigeration, Air Conditioning and Heating. College graduates with Sales Engineering Application knowledge desirable. Salary, car and traveling expenses provided. Write,'giv ing full background and qualifications in first letter. Write Box No. 490, HEATING AND VENTILATING,. 148 Lafayette Street, New York 18, 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. 486, 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 18 years successful background available to a manu facturer of Malleable and Cast Iron Pipe Fit tings, 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 distribu tion, it will pay you to consider strongly my comprehensive sales-repreBentation 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 Box No. 481, HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y. SALES ENGINEER; For National Accounts. College Graduate'with experience in Air Con ditioning desirable. Vacancy existing in estab lished manufacturing company operating on nation-wide basis. Write, giving full back ground 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. Profes sional licensee. Location preferably Eastern Central Seaboard. Salary $7,000. Box No. 487; HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y. SAVE vital trucks, gasoline and tires. Re duce cost3. Not too late to start automatic fuel ojl truck deliveries. Write us. Degree Day Systems, 6106-39th Avenue, Woodside, N. Y. WANTED1--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 house hold 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 Lafay ette Street, New York 13, N. Y. DISTRICT REPRESENTATIVE: Leading 1 manufacturer has openings for seasoned men If in Heating, Cooling and Commercial Refrig- | eration. Specialty selling and dealer selection 'J* knowledge desirable. Salary, car and travel- TM ing expenses provided. Write, giving full background and qualifications in first letter. 9 Box No. 489, HEATING AND VENTILATING, | 148 Lafayette Street, New York 13, N. Y. | POSITION WANTED--Army Captain, Corps of Engineers, seeks 'responsible position. 5 years experience in engineering sales,- es- % timating and design of heating,, ventilating 1 and air conditioning. References on request. Box No. 483, HEATING AND VENTILATING, i 148 Lafayette Street, New York 13, N. Y. POSITION WANTED--Graduate of an AirConditioning and Electrical Refrigeration School wishes further practical training with a reputable firm. Location and salary secon dary. Single, Honorably discharged veteran. Box No. 484, HEATING AND VENTILATING, 148 Lafayette Street, New York 13, N. Y, WANTED1--^-Man with experience in sales en- ' gineering to manage branch office at Balti more. Company distributes all types of fans, blowers and pumps. Distribution of equip ment to be handled through established job ber 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 Bhall 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.