Document rBJbD1z33LJovNqnVGMrGgyNa

Parading Fuses Soldered AutomaticalI Soldered parts untouched by the venerable soldering iron are being pro duced today by modern, fully auto mated machines. Pressured by the high cost of labor, many manufacturers are finding that machine soldering is faster, cheaper and gives uniform high qual ity joints. First automatic soldering ever done was on "tin" cans ... a process dating back many years. Preforms -- shaped chunks of solder and flux that fit con veniently for easier soldering -- was another early step towards higher pro duction rates. Another big push was given to auto matic soldering by the introduction of small size radio sets and electronic equipment using printed circuits. Ma chines dipping printed circuit cards held in racks can complete hundreds of junctions in one operation (see story at right j. The past couple of years has seen an accelerated use of automatic machines. One such machine, recentlv introduced by Induction Heating Corporation of Brooklyn, N. Y., soft-solders fuse ends at a production rate of six joints in five seconds. Considerable skilled labor was formerly required for this job. Only preparation of the fuses is re quired with the new machine. The operator simply puts the pieces to gether -- placing a soft solder washer in each end of the fuse cap -- and stacks the assembled fuse into the ma chine's magazine. Instead of a soldering iron, the ac tual soldering operation is carried out by induction heating coils. Low voltage coils with an output rating of 71/2 KW do the job. Other functions performed by the machine are sizing of the fuses and an automatic continuity check. Sizing not only insures complete uniformity of length, it guarantees 100 per cent electrical contact of the caps to the fuse links. much too slow for printed circuit man ufacture. Today, whole printed circuit boards are soldered all at once. A hun dred or more junctions can be made in three seconds fiat with modern meth- L I* 26253 jirconate-titanate, a ceramic J that looks like a piece of fired - was discovered a couple of go to be piezoelectric -- the best material to date, in fact. Since ' diecovery PZT (as it is commonly 3) has been making rapid strides -take its predecessors. iome naturally piezoelectric PZT generates electricity aqueezed and changes shape virihtfi aubjected to electric stress. But natural crystals or conventional ffllmodectric synthetics, PZT stands Md) temperature and high pressure. al has a high conversion efficienev. The* advantages make man) new ftn possible. "New product ideas are Sting generated so fast that evaluation I their merits is quite a problem." tty* one major lead zirconate-titanate producer. Probably the wildest suggestion so has been to embed a piece of the jUramlc in the heels of women's shoes, -ffcwy tep would generate enough cur* :m to light a neon bulb at her toes. illKire aerious idea is a spark lighter D and gas furnaces and clothes 1 using the same principle as the . pump ignition system. applications for PZT are com.In from many sources. Jerome y, head of Jerome Murray Corp. ,,i busy professional inventor, has a PZT weighing device and #*0 speedometer among others. ,, construction and potentially " cost' lbese devices have large prospective markets. The PZT scale is as reliable and accurate as a doctor's scale. Besides the obvious use in bathroom scales (under observation by scale manufac turers) industrial uses are anticipated. Extremely accurate and compact, the PZT scale could be installed in many locations in industry where standard scale mechanisms won't fit. Automatic weighing right in a packing machine, for example, or in a fork lift truck, are potential applications. LI A26 254 Inventor Murray demonstrates a scale the siie of a tuna can. The small PZT unit (above) replaces all the beams, linkages and springs of 0 convenfional scale and produces a reading in volts (below). In use, the scale would be calibrated in pounds, ounces, or tons, of course. NEXT ISSUE - PZT in air conditioners and the possibility of "picture frame" TV C.I.L. House, Montreal, Que bec, Canoda (courtesy Cana dian Industries Limited). View of several footings -- far right, pads beside leveled foot ing -- center, pads being ad justed--lower left, column base plate in position. Canadian Skyscraper FLOATS ON LEAD PADS Workmen apply asphaltum to pad before installation . . . and position pad to receive base plate. Rapidly rising to take its place on the skyline of Montreal, the 34 story C. I. L. House at 630 Dorchester Boule vard West, will present its newly fin ished face to the old City sometime around May, 1962. Designed bv the associated architec tural firms of Skidmore, Owings & Merrill of New York, and Greenspoon. Freedlander & Dunne of Montreal, the building's exterior will consist mainh of glass and metal. It's to be one of the first examples of "total design" in Montreal, where the architects design all of the interior spaces for principal tenants. Smooth vertical lines of the tower will extend unbroken through its full height by the machinery floors, located at the 10th and 33rd stor\ levels. To isolate the building front vibra tion which would be transmitted through the columns from the nearbv underground railroad tracks or the subway now contemplated, lead-asbes tos anti-vibration pads were installed betw een the concrete footings and base plates which support the steel frame work. Footings were poured in 4000 psi concrete, with tops recessed and level to hold the lead pads and column base plates. These base plates rest freelv upon the pads, and neither is anchored in any manner to the footing. The re cesses serve merely to hold the lead pads in place. Largest pads used were nearly ei feet on a side, and for handling pi poses were fabricated in two pi about four by eight feet each. 1 were designed to extend 1-in. on sides bevond the column base pi which stand upon them, orking stri on the pads is expected to run abi 1000 psi. Approximateh 1-in. thick, the pa consist of 2 layers of 1 j.-in. lead si rounding 2 layers of asbestos cemi board "8-in. thick, with a 20-gage vanized iron sheet in the center. Tol area of pads used for the job w 1.411 sq. ft. Before they were laid position, asphaltum was applied to bottom to keep lime in the `"greei footings from attacking the lead cov Several other buildings in Mont: are using lead-asbestos pads for vibrj tion isolation, among them: Place ^ Marie, located diagonally acroi corner from the C.I.L. House Canadian National Railway's Montri Station, and the adjoining Queen Eli; beth Hotel. Look Ahead with Lea LIA26255 4 -- -- Lig h t w e ig h t building products (lull can be erected rapidly and cheaply *re the preference of today's builder -- a man beset with high labor costs. I Houses olso sport o bothroom equipped * fiend tile mode of lightweight cloy. Large ell --2 6" i 2 6" -- assembled from indl<NI allow rapid installation. Textured surface and gentle color shading offer wall beauty and vandal resistance in a lobby of the Edgemere Houses in Roekaway, L. I. Wall shown is layed up of experimental lightweight lead glazed block mode of Alfred University. Also, building owners prize surfaces that require no painting and a mini mum of cleaning. Now, structural clay research has led to a new product which meets the demands of builder and owner alike. Extremely lightweight clay building blocks glazed with lead bearing ceramic are good for both ex terior and interior use. They will soon be available in production quantities. Lead bearing glazes will be the pre ferred glazes for these blocks. The rea son? -- lead glazes flow easily over rough, porous clay surfaces without need for critical temperature control. Compatibility with many different col ors is another important advantage. Two major brick and tile producers are set to market these blocks in the next few months. Installed costs won't be known until actual introduction but best guesses are that they should be lower than other types of colorful, self-cleaning walls. Key to reduced costs will be the ex treme lightness of the blocks. Made light by the inclusion of puffed clay, blocks passing all structural standards have been made less than one-quarter the weight of the conventional prod uct. Cost saving advantages of the light block will be faster and cheaper construction and lower shipping costs. First application of this type of light weight building product is at the Edgemere Houses in Rockaway, L. I. -- built by the New 1 ork State Divi sion of Housing and Community Re newal. Lead glazed tile manufactured for the housing commission by Alfred University's Ceramic Laboratories have been experimentally installed in one lobby of this development. Van dalism, a major problem of housing authority projects, is discouraged by the hard, stippled glazed surface. Cleaning of the glaze is easy also. A beautiful rough textured surface in many shades of green avoids any pos sibility of an institutional look in the wall. A great future is seen for the mate rial. Combined with new water imper meable mortars, one-block-thick walls could be constructed with glaze both interior and exterior at tremendous savings. Lightweight precast glazed panels is another possibility for even faster construction. All in all, light weight clay structural units are ex pected to open up a new era in building with masonry products. Lead Goes to School Two university libraries recently used the same novel solution to a roofing problem Cornell University and Rutgers Uni versity libraries have one thing in com mon -- the prominence of their roofs. In neither case was this without design. But in the former there was a particu lar reason. Both buildings were done by the same architects: Warner, Burns, Toan and Lunde of New York City. Both are air conditioned. But, because the John M. Olin library at Cornell rises seven floors, cooling equipment had to be housed on top. Hence the "Hat" as it has been called. The "Hat" is a weatherproof decora tive feature which encloses space for machine rooms and storage. This in contrast to the usual treatment of heavy enclosing walls of masonry. The decorative feature of the assem bly is achieved by use of batten and seam joints in patterns. Material used throughout is lead coated copper. The herringbone pattern evident in the pho tograph serves a double function. It allows expansion of the material and contributes stiffness to the sheet metal. Lead-coated copper avoids staining the adjacent structure and presents a pleasing uniform color which blends well with other building materials. The "Herringbones" themselves are simply crimps in the material. The pat tern is interrupted on approximately forty-two inch centers by alternating batten and standing seam joints run ning vertically. As a result, not only is rain water confined between the bat tens but is slowed in its course by the irregular pattern in the metal. At the comer columns (an example of which is visible in the photograph) the entire vertical surfaces of the column are sheathed in lead-coated copper. These are the visible surfaces where this reliable metal has been used. Else where the same material has been used for window head and sill flashings, floor flashings, entrance step flashings, and planter box linings. All sheet metal work was done by Cashier & Co., Syra cuse, N. Y. In the Douglass College library at Rutgers University a similar treatment to the "hat" was used for a different purpose. Here the sharply sloping roof covers the ends of roof joists. It also provides air space, a higher ceiling, a plenum for the air conditioning. How ever, the decorative possibilities are again not overlooked and the exterior surfaces are covered with lead-coated copper. This time the patterning is done with batten seams only at the corners and on approximately twenty-two foot centers thereafter. These are doubled in each case to form a rain gutter between them, an unusual treatment in itself. Between the doubled battens stand ing seams occur on approximately two foot centers. Sheet metal work done bv The New Brunswick Roofing & Metal Co., N. J. Here, as at Cornell, a purely utilitarian function has caused no com promise with beauty and both build ings have gained from the presence of good design and quality materials. Rutgers Library provides spoce for 150,000 volumes on two floors and a mezzanine and feotures an outdoor reading deck and an entrance by way of suspension bridge. Extremely compact design with centralized staff and service areas permit operation and control with maximum efficiency and a minimum of personnel. 3 1 LIA 26257 ACOUSTICAL PRIVACY ON A ROLLER Torjesen curtain in place -- a 34 db sound reduction provides adequate privacy between the adjoining rooms separated by it. rising construction costs and architectural ideas have spurred development of flexible room planfor schools, conference rooms, __ meeting rooms and similar areas. "flexible" arrangement can ~ ' aed s one large meeting room or ' into a number of smaller areas. ijfoio this easily and quickly, yet pro- ' jjje acoustical privacy comparable to fggwntional small rooms, designers had to do some nimble thinking. Of the many basic approaches to the Mofelem three have made use of some of lead as an acoustical material. The Acousti-Flex curtain (Lead , Yol. JS, No. 1) makes use of lead wire wren into a fabric as the sound bar rier, Accordion folding doors employlag leaded vinyls are now being in creasingly used as acoustical partitions Lead plans to present details of rnne of these installations in later h^rea. The third approach to conveniently tiovable partitions is still more novel h fcl use of leaded vinyl sheet. The -rTbrjeaen acoustical curtain can best be to a large window shade which P or down at the touch of a With a ten foot ceiling, half a auffices to "install" or "remove" jOOUatical wall, no matter how wide. Using a sheet of leaded vinyl : weighing 3 lb. per sq. ft. (it's % thick), the manufacturer of trtain has been able to attain an aound transmission class of Riverbank Laboratories test. This is about the same degree of acous tical privacy that could be attained with a solid inch of sand plaster as a wall. One of the problems that designers have found tough to lick is sealing the edges of such a wall. The Torjesen cur tain stops these sound leaks with vinyl pressure seals built right into the jams. At the floor, the curtain's weighted bottom hem also maintains a tight seal -- without any floor track or other appurtenance. All the mechanism, including the drive motor and guide roller, are housed in the overhead enclosure which is 18" square. Of course, in new construction this may be located in the ceiling itself so that no head room at all is lost. Jams at the sides extend only SVi" into the room and are less than 3" thick. Since many of the installations are expected to be in schools and meeting rooms where the use of a blackboard can be expected, the curtain has an optional feature of flexible chalk panels. These areas provide a conven ient writing surface which disappears along with the wall when it is rolled up. The illustration shows the good legibility attained with ordinary chalk. The Torjesen curtain, announced only a few weeks ago, is now being installed at Chicago's Teachers College and in other schools. The approximate installed cost is $10 per square foot. It is made by Torjesen, Inc., 209 25th St., Brooklyn 32, New York. Going . . . gone! This test instoliation in the manu facturer's plant shows all ihe working parts which are normally hidden by the building walls and ceiling. -7-- L I 262* Brand New Auto Uses Battery Power Two issues ago Lead pictured the experimental "Voltaram." The Stuart electric family car shown here is now going into production by the same manufacturer. Weighing 1200 lb., in cluding batteries, it will carry two adults and two or three children in comfort at speeds up to 35 mph. Its low gear ratio provides ample power for hills and grades. After about 35 miles of driving, charging from any 110 volt power outlet refuels it through a built-in charger. The attractive economics of batter\. powered driving get off to a good start with the purchase price of the Stuart -- $1600. The inherently durable qUa], ities of electric vehicles are well known perhaps even legendary. The number of moving parts is astonishingly small No antifreeze is needed for there is no radiator, no oil change because there is no crankcase. The upshot is trouble, free driving at less than a cent a mile Stuart Motors, Inc., is located at 317 N. Church St., Kalamazoo, Mich LIBRARY OF TECHNICAL INF ` RMATION UJJJJJLU VUJJJ7 UJJJ4 UVUUJJ The following pubiicotions ore ovoiloble free of charge unless otherwise noted. Send request to the LEAD INDUSTRIES ASSOCIATION, 292 MADISON AVENUE, NEW YORK 17, N. T. The materials you buy - lead Descriptive information about lead from mine to finished products. Reprinted from "New York Purchasing Review," January, 1959. Corrosion Doto - leod 8 alloys Chart form presentation of the corrosion re sistance of lead and its alloys to 188 common chemical materials over the normal tempera ture range. Reprinted from "Chemical Engi neering." February, 1953. Methods of lead lining tanks Four page review of corrosion performance and fabrication methods for lead in process vessels and piping. Considers five ways of using lead. Reprinted from "Chemical Engi neering," January 9, 1961, Materials of construction reviews Lead and lead alloys in design and construc tion for research and engineering use. Bibli ographies for 1961, 1959, 1958 and 1957 are available (editions are not cumulative). Re printed from "Industrial and Engineering Chemistry." Leod-osbestos onti-vibrotion pods Gives specification, drawings, and reviews re cent applications of lead-asbestos anti-vibra tion pads for buildings. Lead work for modern plumbing $2.00 Postpaid, $1.50 per copy in quantities of 10 or more. Profusely illustrated with over 140 photo graphs and drawings, the textbook presents clearly to the plumbing student the necessary tools, procedures and the methods required for lead work. Design engineering data Twelve-page publication summarizes all main lead uses, tabulates data. Red leod technical letters No. 12 Seven formulations and schedules for painting highway structural steel. No. 13 L.l.A. Formula 9-2. A single Red Lead Primer for Rusted. Weathered or New Galva nized Steel. No. 14 Describes the formulation of red leadcoumarone primer for seawater immersion -- ship hulls, fixed marine installations. Lead in modern industry (Request on company letterhead, please) A fully illustrated 230 page, cloth bound book describing all phases of the production and use of lead, lead alloys and lead compounds. Truck costs in o jiffy Three nomographs permit estimation of costs for gas or battery powered industrial trucks in two or three minutes Depreciation, operat ing costs, and maintenance are appraised sep arately for all unusual types of operation. Building construction bulletins No. 1 Specifications for Lead Waste Connec tions for Plumbing Fixtures with Integral Traps (Water Closets -- Pedestal Urinals -- Service Sinks). No. 2 Specification for Lead Shower and Safe Pans. No. 3 Specification for Lead Chemical Labora tory Drainage Systems. Seomless terne for roofing Illustrated four-page architectural specifica tion also provides data on strength and weight characteristics and color advantages of terneplate as roofing. Oilless bearings -- helicopters Reprint from "Design News" shows use of lead-teflon bearings in helicopter. Photos and drawings included. Nuclear moterials Eight-page reprint from ''Materials in Desitrr. Engineering" inspects current fuels. control, moderators, reflectors and shielding. Decorative finishes for leod Informative four-page reprint from "Meta; Finishing" (19491 dez-cribe? method? for ali finishes and plating method? for lead. Cutting press vibration Describes use of lead-a?bcstu.- anti-vibration pads to reduce newspaper press vibrations. One-page reprint from "Publication Manage ment" for April, 1961. Quiet please! Two-page reprint explaining lead'? mnctior as soundproofing material. From ''Modem Sanitation and Building Maintenance" Apri.. 1961. NEW LISTINGS Porceloin enameling aluminum Reprint from "Precision Metal Molding." May, 1961, gives design tips, typical frit formula tions. and surface characteristics for alumi num enamels. Amazing new spark plug pump Eight-page reprint from "Popular Science" describes piezoelectric leaded ceramic and it? use in gas engines, All about leod welding Reprint of the chapter on lead welding from American Welding Society's "Welding Hand book." Concise but comprehensive. UPON REQUEST, THE LEAD INDUSTRIES ASSOCIATION WILL BE GLAD TO MAIL "LEAD" REGULARLY, FREE OF CHARGE, TO THOSE INTERESTED, AND WILL COOPERATE WITHOUT OBLIGATION IN THE SOLUTION OF YOUR LEAD PROBLEMS. Reproduced by letterpress from lead type. PRINTED IN U S.A. p u b l is h e r s p r in t in g -- r o g e r s Ke l l o g g c o r f LONG ISLAND CITY 1, N. Y. LIA262 59