Document GeODo4BoQLqoaz7yb1VX0dwq

PATENT DEPARTMENT GHQ i MAR 1 G 1953. V. C. Kline Manvilla NOTE Division Headquarters March 13, 1953 PLAINTIFFS EXHIBIT JM 1121 Infestation Control in Ends of Box Cars Back in 1951 we discussed the above subjeot and at that time you advised us in your letter of August 15th, your file 436-841, that you considered it entirely safe for us to sell.J-M insulation in competition with Fibreglas which was being offered for this purpose, and which would, be installed in the same manner as the Fibreglas* Accordingly we have worked with the Research Laboratoxy who have developed data regarding the effectiveness of our material in preventing this infestation, and we believe we have material we can offer for sale which is at least as effective as the competitive material.' Before actively entering this field, however, we are writing to you at this tine to ask you to check to make certain that there has been no change in the status of our position inasmuch as in some of the competitive sales literature which we have seen (of which Mr. Vhinfrey has a copy) "Patent Applied ox* J.8 shown. CC Mr. R. P. Townsend Mr. V. M. Mac Alpine, Manville Mr. C-. G. Whinfrey Mr. C. A. deVyver MTC 017398 April 9, 1952 436-H4J.-I Memorandum: for File Bishop Fiberglas System, of Infestation Control y#'- Caption for photograph appearing on page 41 of "Modern Sanitation" February 1952* "The Southern Pacific Company, one of the nation's largest railways hauling grain and milled products, is now employing Fiberglas Infestation Control-- Bishop System, in 1,500 of its new box cars and in. 50 repaired in its shops. Developed by Frank S.' Bishop, a Minneapolis engineer, in cooperation with Owens-Coming Fiberglas Corporation, this system uses Fiberglas blankets to fill the space behind the wood linings at ends of box cars in which grains and milled products are shipped. Studies have re vealed that insect pests harbor in acemulations of grain and dust in these spaces, then multiply and may cause extensive and costly damage to shipments. Southern Pacific has ordered materials- for use in an additional 2,500 new cars to be built at its own shops in Sacramento, Calif.' Owens-Corning officials reported that some 15 railroads now are using or are exploring extensively the effectiveness of the Bishop System, which has been laboratory and field tested for five years. About 2,700 cars now have the service." -Jr. RJA:em cc: C. E. Bryant - GHQ MTC 017399 Bnsearch Center August 15, 1951 436-841 C.E. Bryant - GBQ Biahop Fibregias System of Infestation Control lours of June 8th We have examined the article on "Glass Wool Box Car Lining Prevents Insect Infestation" in connection with your letter of June 8th, with attached letters from Thomas O'Leary. We do not believe there is sufficient probability of any patent protection on this construction to Justify an involved patent investigation. Actually all that is involved is the installation of standard Fiberglas blanket insulation without paper, in the ends of steel box cars, probably cemented to one face of the space. This has been done for so long with so many types of Insulation that we consider it entirely safe to sell Johns-Manville insulation for the same purpose and installed in the same manner. VCKipm V.C. Kline Attach (1 extra copy of memo) MTC 017400 Glass Wool Box Car Lining Prevents Insect Infestation Easily installed, glass wool blankets prevent accumulations of grain and other organic food which are a source of infestation by insects ABOUT 180 iq ft of glass wool are required to seal up end spaces of a box car, thus preventing grain from accumulating. The wool will not support any insects. O control insect infestation in box tars, a -vslem of lining the sides T and ends of ears will) Fiherglas wool. thus sealing off the spaces where inserts iiormallv multiple, has shown good results. Studies have revealed that the primary source of infestation to food products shipped in hox ears is from inserts harbored in aeeunmlations if grains ami other organic fond materials in inaccessible places behind wall linings. Mam box ears are constructed without bottom side liner hoards, thus forming a grain channel at lloor level all along the sides, [wen with these channels, however, it is possible for aeeuinufations of grain particles and dust to heroine caked in the side walls to such an ' \tcnt that thr\ cannot he broken out hv hammering the inner lining. In ear ends, compartments are formed hv the horizontal corrugations of tin* sleel ends, the fir nailing strips boiled into regularly spaced corNjgations. and the inner wooden lining:- which are nailed to the fir -trips. Grains and organic dust getting into these compartments through crack- or -mall breaks ramml he removed hv anv method of cleaning. Inserts find their wav into such places and multiply unmolested. The Liner Is Easily Applied Rv Idling the voids between end linings ami other spaces with Fiher glas blankets, the new system of infestation control, which was devised l*\ John S. Rishop of Minneapolis, prevents accumulations of organic matter. In addition, any insects which penetrate the Fiherglas wool can not live for anv length of lime, since the material provides no food for their sustenance. ___ __ Installation of tin? Fiherglas in the two end- of a ear is said to renuire approximately one man-hour on the part of two carpenters and about IRO square feet of F iherglas. Labor and material required for sealing up the sidewalls of a ear will, of course, depend on the size of the car. A trial installation of Fiherglas made in the ends of a ear in 1917 is reported to have had very favorable results. After three years* service, the ends were found to be entirelv free of infestation, while the sides of the car. which had not been protected, had large accumulations of grains and other matter in which then* were munv live insects. The Fiherglas used in this new system of insect control is a product of the Owens-Corning Fiherglas Corp., Dept. MIL Toledo !. Ohio. For More Faels. Clink--MR 7201 MODERN RAILROADS MTC 017401 I. P. Townsend C 0PI San Prancisco Office May 18, 1951 PATENT DEPARTMENT GHQ HAN ! AUG- s I35 note Bishop Fibreglas System of Infesl/ation Control For your information, the Southern Pacific is incorporating the above system in 1500 freight cars being built by the Pullman Standard Car and Mfg. Co. at Bessemer, Ala. In making an investigation of this system with Mr. Passur, Engineer of Car Construction, I find that he does not have too much on the subject other than that a 2' blanket of Fibreglas insulation without paper is applied to the steel ends of the box car after application of cement and over the insulation, the car Uning is installed. The object is to eliminate weevils when the cars are being used for grain shipments. The insulation fills the space in the corrugated ends of the box car. Ho one seems to know who Bishop of the Bishop FibreglaB System is, or whether there is any patent involved. I would appreciate any Information you might have on the subject as it has been>reported that this system has been vexy successful in eliminating weevils from box cars. The thought occurs to me that there could be no patent 6n applying insulation to a box car and I cannot see any reason why we cannot take our Mineral Insulation of a density that would not require paper and flexible enough to conform to the corrugations in the steel end of a box car and supply it for this pur pose. I understand at the moment that the Fiberglas is to be furnished in sheets, 2 x 24 x 114* to 116". ' Please understand that none of the Fibreglas other than a sample was presented by the Gustin-Bacon people and the sample in question was sent to Mr. Brown, Supt. of Motive Power, who is now out on the road so I did not get to see it. I am told that it is very similar to their standard Fibre glas; however, rigid enough to support itself without covering and flexible enough to accommodate Itself to the contour of the corrugated ends of a box car. - I would appreciate any information you can give me on this subject and any suggestions you have to offer, lour early advices wi^l be appreciated. Thos. O'Leary % `'-t ti ^4 MTC 017402 With reference to our conversation in connection with the above subject when I was at Manville on Wednesday during which I told you that I had recalled seeing a magazine article which described the Bishop system mentioned in Mr. O'Leary's letter which I showed you. I have checked our files and this article appeared in the February 1951 issue of Modern Railroads on page 180. As per our conversation we would appreciate your checking to determine whether or not there is any patent protection for the use of Fibreglas in this service. CC Mr. R. P. Townsend Mr. E. R. Williams, Manville Mr. H. T. Coss " MTC 017403 6. S. 2ox 91 Bern Fifingtco Jrmm 13^1 1 <3 1951 1b1fcthsopUTtilbner'Cilaaosnittyros*l'taLa_e_f_-- Thaolri Tory mk for IJhe laforantioa eon* taisod is year lottor of Isse B is answer to also of Hay iSth os the abets sufejeet* I will bo Tory iatorootoA is heariac f*on yos regaadlnc tho potest oitsstios. is Z airloed yos is ay latter of Hoy 18, Z dli sot boro s oppertoaUy to see tie Tibreglaa natorlol proposed for this In stallation, 1st X will at the first oppor- tsnity ssdeerer to ooosro s sasple of thie notarial as yos rotssotod and will forward it to yes proaytly. fKl . 6. niao - la______ l. x. viiiiaM X. f. ton * Tile MTc 017404 / Division headquarters June 3, 1951 Mr. T. O'Leary San Francisco V Bishop Fibreglas System of Infostrati on Control I have uiscoseed y^ur letter of M&7 13th to Mr. Townsend under tne above subject with our Research Laboratory and checi Ls bein^ aaae at tne prca-snt tine to determine whether cr not mere is any patent situation involved and we will anviae you regarding this as promptly sb possible. In the meantime, however, assuming that we are able to furnish material for this service, in orner that we can auvise you that our material is equal or superior to the Fibreglas beinp used, nan if tne latter why, we must have a sample of the competitive material and ve would appre ciate your securing a sample of the Fibreglas being offered. Preferably, we snoula have a etmple one or two feet square, but if you cannot secure this a sualier piece will be of help. C. B. Bryant, Jr. CC Mr. V. C. Kline, MManvilxe *w Mr. E. R. William,ss W Mr. H. T.. Coss File MTC 017405