Document ZnOZb8rO3D7pY0odv4982Z6nO

vm VOLUME FIFTEEN MAY-JUNE 1945 NUMBER THREE 7th WAR LOAM fV-" . ,./ /<' - .. > '-r'-V>t v /'*' 'VT v'.V'4 1:> * - According to "Yank," Me Weekly, tMen Me /l/<irMe$ Aad carried the flag to the top of the volcano "Sgt. Henry 0. Hanson of Somer ville, Mass., looked around for a pole and found a lead pipe on the ground. At 1137 hours he with Lt. Schrier and other 5th Division Marines raised the American Flag on the topmost mound of Suribachi" We take this as being symbolic of lead's record of service in meeting wartime emergencies. IS YOUR OBLIGATION TO B E A BACKER OF THE FINEST MEN AND THE GREATEST FIGHTING FORCE THE WORLD HAS EVER KNOWN Pure White Lead Paint Lives Ip To Its Promises N 1939 it was our good fortune to obtain the cooperation of one of the many home owners who take pride in incorporating only materials of high est quality into their new residences. He made full use of the great dura bility of lead products in the three major fields of their building applica tion. namely plumbing, roofing and flashing, and paint. We published detailed descriptions of all three ap plications together with numerous photographs of the building under construction. Now, six years later it is worth while to take stock and in quire as to the performance of these materials and to see whether or not he was justified in selecting lead to fulfill these important functions. Six years is of course too short a time to be a serious test of plumbing and flashing metals although failures of these functions in shorter periods are by no means unknown. Suffice it to say here that both lead plumbing and lead flashing are in perfect con dition and the owner has not found it necessary to give any thought to service or repairs to these details. However, six years is certainly a long enough period to be regarded as a reasonably severe test for a paint job especially when the job in ques tion was the original application on raw wood and so was required to stand strictly on its own merits. Care ful examination shows the pure w'hite lead paint to be in excellent condition on all three of the exterior materials used on the house, shingle sidewalls. white pine trim and brick chimnevs. Although the evidence of chalking is slight there is little accumulation of dirt even on the comparatively rough surface`of the shingles. Where soot has accumulated due to wind blown roof drainage it can be easily brushed off w ith a painters duster. Although the paint is still in excel lent condition and has bv no means reached the end of its effective pro tection of the underiving wood and masonry from the weather, the owner intends to repaint this spring. Need less to say he expects to use pure white lead paint again. The painting oper ation will entail only the labor of applying the paint plus a preliminary brushing to remove surface dust. The pure white lead paint, holding true to its well known characteristics, has not only lasted extremely well but it has retained its smooth and unbroken sur face readv to receive the repaint job without special preparation. All users of pure white lead paint can expect to get this same economical service. LlA2564L Portfolio of' American l^Laacimarks 1 Aloof The Massachnsclts Sea Coast No. 31 PHOTOS BV DAYTON SN YDEI The Sargent-Mur* ray `Gilman house in Gloucester,Mass., built in 1797, once the home of Rev. Samuel Gilman who wrote "Fair Har vard," is painted with pure white lead paint. The Ropes Mem orial in Salem, Mass., built in 1719, like so many other surviving landmarks of wood construc tion, stands today protected by pure white lead paint. The old Poole Homestead in Rockport, Mass., built in 1724 has been mod ernized ir.'ide wt'H electric light and plumbing, and it is thoroughly up to date outside pro tected by pure white lend paint. I ARGE or small the homes of the |_ early residents of this country were sources of pride to their owners who gave thought to their planning, built them well and strongly, and cared for them dilligently. Otherwise America could not now7 possess such a rich heritage of charming precedent for present day homes for pleasant living. The three houses illustrated here range from the cottage to the man sion, yet they all show evidence of their owmers understanding of the importance of design, structure and maintenance. The "Old Poole Homestead" is but one of a number of existing cottages in Rockport, Mass., identified with the Poole family, but it is cared for as lovingly as is the Ropes Memorial in Salem. Mass., or the Sargent-MurravGilman house in Gloucester. Mass., which in 1915 was saved from dis mantling for its fine interiors bv popular subscription. Thev are all kept beautiful and maintained in sound, livable condition with the help of pure white lead paint. The owners of these precious landmarks take par ticular care that they are provided with the best and surest protection from the ravages of time and the ele ments by the use of pure white lead paint, the same high quality material that was the standby of the craftsmen who built the many charming houses of the early settlements of America. THIS IS NO. 31 OF A SERIES REPRESENTATIVE OF THE MANY AMERICAN LANDMARKS IN VARIOUS SECTIONS OF THE COUNTRY THAT ARE PRESERVED FOR THE FUTURE WITH TUBE WHITE LEAD AND OIL PAINT. MANY OF THEM HAVE ALWAYS BERN PROTECTED WITH THIS RKI IAH1E MATERIAL ACCORDING TO AVAILABLE RECORDS. --3 LIA25645 Sheet Lead Work Completed On Pennsylvania State Capitol Dome N our last issue we described some on the main ribs. All sheets including I of the leadwork which was recently the pans between ribs and the mould installed as a part of the extensive ed courses above and below the ribs repairs to the dome of the Capitol are secured to the underlying wood Building of the Commonwealth of with metal cleats folded into loose Pennsylvania. The design of the dome locked joints. A water tight joint was was based on that of St. Peters Church provided at the base of the ball by in Rome, but although in silhouette it means of a clamping ring of bronze is one of the most graceful domes in secured to the steel with screws. Lead America, the scale of the original ribs and ring were bedded in white lead. was heavy and some of the mouldings A lead coping and flashing was at the base and on the lantern were not entirely pleasing. Mr. William Gehron, architect, who designed a number of the more recent state build ings in Harrisburg, including the im pressive Memorial Bridge, took the opportunity afforded by the repair job to refine the detail of the ribs and to Upper right, view of completed dome showing excellent appearance of the new lead ribs, also reconstructed lan tern totally roofed with lead. rebuild the lantern. Changing the ribs and the lantern roof to lead and the lantern to stone also brings the struc ture more nearly into conformity with precedent since the dome of St. Peters is roofed entirely with lead. Lower right, lead coping on lantern cornice. Each sec tion is covered with one piece oi The new lantern is roofed entirely with sheet lead applied over a skeleton of treated wood which in turn is lead extending through under the attic course. bedded soldily in concrete. The lead is applied in essentially the same man ner as on the ribs of the main dome. In this case however the ribs are smaller, only about 5 in. high at the base, and the lead covering is in one piece transversely instead of seven as Lower left, rib terminal detail oi preforned sheet lead over solid wood core at base of dome. applied on the cornice around the lantern. In this case the areas to be covered were small enough not to re quire provision for expansion so no transverse joints were necessary. Each coping is a single sheet of lead. Here, as in the copings at the base of the dome, the portions of the lead in con tact with mortar were painted with asphalt paint as a protection from free lime until the mortar is cured. The figure that tops the lantern roof and the ball on which it stands, as well as the moulded portion of the main ribs, are finished in gold leaf. The PHOTOS BY W. B. HINES --4-- LIA25846 Detail oj lantern root showing care ful attention to jointing on compli cated area. igure and ball are of iron on which wo coats of red lead were applied folowed by a coat of white lead as a base or the gold leaf. The ribs to be gold eafed were painted with white lead or both priming and body coats since netallic lead does not require the rust nhibitive protection of red lead. A construction project of the maglitude of this repair job would not rave been undertaken during war time f it bad not been necessary to elimnate serious hazards to the public wd to an important building. Since he work was necessary it was conidered essential that all materials ased be of a nature to provide maxinum durability and eliminate so far is possible all likelihood of further '.roubles. It is indeed fortunate that lead w as freeh available at the time so that the necessary metal-work could he executed w ithout conflict with muritions manufacture and procurement. While this building is of monu mental character, the advantages of lead roofing and flashing should not be considered as being available only to large and expensive structures. Lead mav be used in weights and thicknesses which make material costs compatable with modest residential and commercial buildings. Hard lead, an alloy of lead and antimony may safely be used in weights of 2Vs lb. to 3 lb. per square foot (5 128 in. to 3 764 in. thick 1 depending on conditions, which be cause of the low price of lead per pound is not excessive in cost but which because of the low corrosion rate and the greater thickness com- pared to other sheet metals presents greater resistance to corrosion dam age than any other roofing metal. A reprint "Summary of Notes on Lead Roofing" describing the use of hard lead is available on request to the Lead Industries Association. State and Federal Vocational Education Agencies Helpful In Establishing Lead Welding Classes HE! interest of men in the plumb a number of cities have been active Ting trade is turning increasingly in providing opportunities for their to lead welding. These men havemen to learn lead weiding bv setting realized more than most of us the up classes where they can receive effects of the Japanese conquest of the instruction. worlds major sources of tin since tin The first problem to be solved in is a necessary component of the solder arranging for such a class is finding used for making the wiped joints an instructor. In some cities experi commonly used in fabricating lead enced lead welders have been avail plumbing. Since lead welding makes able and successful teaching programs possible the joining of lead pipes were easily established. In other without the use of solder the plumbers places it has been necessary first to are convinced that bv using this establish training classes for teachers. process they can continue to install In such cases the state and national high quality lead work and at the vocational educational agencies have same time release at least part of the been very helpful. restricted amounts of tin allowed One of the recently established pro them by the War Production Board grams of lead welding instruction is to other essential uses. in Illinois where a class for teachers However lead welding is not a was held at Millikin LTniversitv at casual operation which can be done Decatur. This class was sponsored by without preparation. It is a skilled Plumbers Local Union 65. the Decatur craft which must be acquired by prac School Board and the Illinois Board tice although there is nothing mysteri for Vocational Education. It was or ous about it as many people seem to ganized in response to a number of believe. The plumbers local unions in requests from locals in Illinois cities. --5-- LI A? 584? Prospectu e teachers of lead welding from eight Illinois cities who will instruct members of their local unions in this important craft. Instruction was provided not onlv in the actual skill of lead welding but also in teaching and class organiza tion. so that the men attending would be thoroughly equipped to pass their newlv acquired skill on to journey men and apprentices in classes spon sored by their home organizations. The class was well attended by representatives from eight Illinois cities where lead welding classes will be established under the sponsorship of local plumbers unions. Other state and federal vocational training agen cies have established courses in lead welding, one of the most recent being in Lowell. Massachusetts, under the sponsorship of Plumbers Local 400 and the Lowell Trade School. The plumbing trade and the voca tional educational authorities are to be congratulated on their activity in promoting the teaching and use of lead welding. It not onlv serves the patriotic purpose of conserving tin. a critically needed material which will not be in plentiful supply until long after Japanese held producing areas are freed, but adds an extremely use ful skill to the plumbers ability. \ew Type of Lead Shcalhed Cable Installed For Television Transmission NE of the latest developments are under construction at the present O in communication transmis time. With the exception of the first sion equipment is a new tvpe of calbinlee of coaxial cable which was in known as coaxial cable. The out tended purely for experimental pur standing feature of this type of con poses and which extends from Phila ductor is that each individual circuit, delphia to New York, all of the instead of being a pair of wires, con installations have been combination sists of a single wire which functions as one side of the circuit inside a metal tube which acts as the other ~ide. The wire is insulated from and kept concentric with the tube bv a series of insulating discs spaced about 1 in. apart throughout the length of the conductor. This type of conductor has been found to be adaptable to the transmis sion of the high frequency signals expected to be used in the network transmission of television and the widespread use of this long expected development of broadcasting will probably depend to a large degree on the extent to which the new cable be comes available. Several stretches of cable contain ing coaxial circuits have been laid in various parts of the country and some cables containing four to six coaxial conductors and a number of regular paired wire circuits which can im mediately be put into service for reg ular communications work pending the installation of the special equip ment necessary for the utilization of the coaxial conductors. How ever, all of the new cables have one characteristic in common which is identical with thousands of miles of other communication and power LIA25848 cables already in use. They are all sheathed in seamless tubes of flexible corrosion resistant lead. The lead sheath which is applied to the tightly compacted bundle of wires and cables by an extrusion process makes possible the fabrication of rela tively long lengths of finished cable which can be coiled on reels and transported to the place of installa tion. There it can be unreeled and pulled through prepared conduits or, if suitably protected by a wrapping of jute and impregnated fabric, laid directly in a trench and covered with earth. Actually much of the coaxial cable is being laid by the latter method. For many years most of the com munication lines in our cities have been carried under ground in lead sheathed cables and a great deal of progress has been made in extending underground construction on long distance lines. In normal times cable sheathing is one of the major uses of metallic lead and in this war huge quantities of lead sheathed cables are being used on land, on shipboard and in the air and for power transmission as well as for communications work. This new cable, in addition to pro viding a means for inter-station transmission for television, is ex pected to be useful in greatly increas ing the number of long distance telephone channels available. The electrical properties of the coaxial conductors are still being investigated and developed, but the performance of the lead sheath is well known and it can be depended upon to protect the delicate conductors from damage as it had done on many previously laid cables of other types. Leal Alloy Forming Dies Important Tools la Airplane Indnstry ROBABLY no other single process the very flexible design control system Pis more important in the construc which keeps American warplanes tion of modern airplanes than theconstantly up to date while they con forming of sheet metal parts. Not tinue to be manufactured on a pro only the outer covering but many duction line basis. structural parts of planes must be In many of these forming dies, stamped or pressed into shape before which are always used in matching they can be assembled and riveted or pairs, antimonial lead is the material welded into fighting ships. from which one of the members is Since airplane design is almost made. The other half of the pair is never frozen and any revision in de made of a special zinc alloy die sign may require new tools to make metal. The process of manufacture is the altered parts it is imperative that to cast the die or female member of these tools be produced quickly and the zinc alloy metal in sand from a economically. Comparatively recent plaster pattern made by hand from development of a process of casting drawings and templates. After the sheet metal forming dies in low melt working surface of this member is ing point allovs has made possible smoothed and polished it is sur rounded by a fence or dam of asbestos Lead-antimony punch just cast in zinc-alloy die with form boards re moved. boards and fire clay high enough to provide clearance between the platen# of the press. It is then filled with molten antimonial lead to the top of the dam. The necessary bolts for securing the punch to the press are set by template, and the metal is al lowed to cool. The dies are then readv for use. The antimonial lead is sufficiently ductile to flow under the pressure of the press to fill up any solidification shrinkage which has occurred but is hard enough to stand for fairly long runs of light gauge metal parts. The antimony content of the lead varies with the use and the machines on which the dies are to be used. Maximum hardness can be achieved only at the expense of some ductility and a consequent increase in brittle ness. For drop hammer work from 4 to 7 per cent, antimony is commonly used but for dies used on presses where impact is not a factor higher antimony content can be used with re sulting greater hardness and dura bility of dies. The zinc ailoy-antimonlal lead die sets are being regularly used by air plane and other industries for form ing aluminum, magnesium, dural, mild steel and other sheet metals for both development and regular manu facturing operations. Their chief ad vantages are rapid production and 100 per cent salvagabilitv with conse quent savings in time and cost, both of prime importance in the produc tion of all manufactured articles. Lead-antimony punch removed from die ready for immediate use on forming press. --7-- LIA25849 I The II. S. i\avv Built of Lead That Never Goes To Sea they represent the first time they laxeyes on them. The production of these new and effective training aids has been part HE mighty Lnited States Navy of Tships that fear no foe or weather has a miniature counterpart that never gets wet: battleships, cruisers, de stroyers. submarines and merchant ships, perfect in scale and proportion, which ride only on seas of painted wood in the classrooms of training stations, many of them far inland from salt water and sea breezes. But so accurate in mass and detail are these lilliputian vessels that fledgling Navy men who have studied them dur ing their training are able to recog nize and name the great ships which i DAMON SNYDtR Like real ships awaiting action the lead alloy and wood ship models await their appointments in Navy Class rooms. Tht article and reprints contain information, drawing* and wofiteatians on thi vto of lead products helpful to architects, engineers and others In the construction industry. TV/ are mi lab It, free of charge, upon request to the Lead Industries Association. 420 Lexington Avenue, New York 17, N. Y, rnopEnTY p r o t e c t io n w it h w h it e I.FAD PAINT A 28 page booklet on ibe protective value, durability and beauty of pure white lead pnim with quantity e-iimaliDg taMf'. formula* and mixing and tinting instruction- for exterior and interior use. RED I.F.AD FOR STRUCTURAL WORK By Dr. I.. L. C.arriek, Director, Red Lead Research, laid IndiiMriei Association A di-cu-Mnn of tbe ru*t inbibitive qualities of red lead paint and tbe hevt mean* of making uae of tb<> qualitie- for tbe protection of itructural metal. Reprinted from Engineering Aries Record, April 6. 1943 IFAD CARRIES ITS WEIGHT Hy Freil I*. Peter* An interesting re-ume of many of tbe long estab lished use* of lead plu- information on a number of recently developed adaptations of tbe properties of lead to apecial purposes. Reprinted from Scienttfic American, June. 1944. SOME PAINTING PROBLEMS AND THE ANSWERS (ly Dr. F. !,. Browne, Senior Chemiat, Forest* Product* Laboratory, Madiaon, Wia. Reprinted from tbe National Real Estate Journal. Sept., 1939. STAMFORD'S DOUBLE LIFETIME HOME A complete analyst* of bard lead flashing, white lead paint, lead plumbing, plywood aod red cedar Certigrade bingle details and installation methods. Reprinted from tbe American Builder, July. 1939. STOP DEMON nrsT Leaflet giving conci-e, -imple in-tr uctii<n- in tbe u-*<>f tbe rust preventing qualities of Red Lead Faiat in protecting farm machinery. FEDERAL SPECIFICATION WW-p.325 For Pipe, Bend* and Traps, LEAD. Part S of Section IV of the Federal Standard* Stock Catalog, official publication by tbe Govern ment Printing Office. LEAD EQUIPMENT USED IN INDUSTRY By F. E. Wormrer, Secretary of Lead In dustrie* Association A summary of tbe uses of lead in tbe production and handling of corroaive chemicals. Reprinted from "Metal Progreas*' to be included in tbe neit edition of American Society oj Metals Handbook. SUMMARY OF NOTES ON LEAD ROOFING A brief deecription of tbe uses of lead fot roofing and flashing purposes and tbe proper practices of it* application. Reprinted from Sheet Metol Wotk^t. NEW LEAD COATING PROCESS ELIMINATE** l SF OF ZINC ALLOYS By V. Vonkman. Engineer, Western Eleetrie Co. 4 description of a successful bot dip lead cii*ung prncr-- with complete itwruction- for changing over from hot dip galvanizing u-ing the same equipment. Reprinted from Pr,,duri Engineering, M.n. 1934. COMMERCIAL STANDARDS: Calking Lead, CS94-41 Lead Pipe, CS95-41 Lead Trap* and Benda, CS96-41 Official publications by tbe Government Printing Of fice of tbe above Commercial Standards as promul gated by tbe U. S. Department, of Commerce through tbe National Bures of Stan.aids, effective June 25. 1941. LEAD COATINCS ON STEEL By Harold A. Knight, New* Editor, Metal* and Alloy* A thorough discussion of bot dip and electroplated coatings on steel sheet, wire and fabricated prod ucts including tbe technique of application, thick ness, of coatings, met and advantage*. Reprinted from the November, 1944 itsne of Metals and Alloys. I.EAD X-RAY SHIELDING Graphic chan based on recommendation* of tbe International Commission on X-Ray and Radium Protection giving thicknesses of lead for reepactire voltages in millimetres, inches and pound* per square foot. of the wartime work of certain manu facturers who, before the war. made toys and hobbyists supplies. The fine detail of superstructures, armament and fitments is all executed in cast lead alloy and applied to accuraleh shaped wood hulls. These models are fulfilling a very definite need in familiarizing men in training with the appearance of the ships of our Navy. While thev are small and would delight the heart of any small boy they are much too fine ly made to be classed as tovs. Should the Navy have more than thev require or should a reduction in the training program make it possible to dispose of any of these models. the\ will he eagerly sought by collectors and bv Navy men who would be proud to possess replicas of the ships on which they served. The models pictured were made b\ the Comet Metal Products Co. of Richmond Hills. L. I.. N\ 3 . They are at a scale of 1 to 500. Similar models of the ships of our enemies, one of which was illustrated in a previous issue, are also part of the Navy's training equipment. SPECIFY .tu> ma t e r ia l UPON REQUEST, THE LEAD INDUSTRIES ASSOCIATION WILL BE GLAD TO .MAIL -LEAD-' REGULARLY, FREE OF CHARGE. TO THOSE INTERESTED, AND WILL COOPERATE WITHOUT OBLIGATION Di THE SOLUTION OF YOUB LEAD PROBLEMS PK1NTED IX V. S A LIA2585C166 \ PUBLISHES! P8I NTING COM PAN NPW YOII CITY