. The Street railway journal . to the convention appreciated the easy working ofboth the curtains and sash balances, and manifested great interestin these devices. The National Lock Washer Company alsomanufactures the National lock washer, of which over three hun-dred millions have been used in railroad track work. This is asimple, very effective device that is easily applied and adapted foruse on all kinds of work. It is made of a high grade of steel,hardened in oil and tempered. When the nut is screwed uponthe bolt, it first strikes a rib on the lock washer, which, beingheing harder than the
. The Street railway journal . to the convention appreciated the easy working ofboth the curtains and sash balances, and manifested great interestin these devices. The National Lock Washer Company alsomanufactures the National lock washer, of which over three hun-dred millions have been used in railroad track work. This is asimple, very effective device that is easily applied and adapted foruse on all kinds of work. It is made of a high grade of steel,hardened in oil and tempered. When the nut is screwed uponthe bolt, it first strikes a rib on the lock washer, which, beingheing harder than the nut, progressively upsets and forces someof the metal of the nut into the thread of the bolt and positivelylocks the nut so that it cannot back off or jar loose. The washeris made for all sizes and any make of bolt or nut, a special boltand nut not being necessary, and the same bolt, nut and lockwasher can be used as often as required, advantages which willappeal to all track men. October 7, 1905.] STREET RAILWAY JOURNAL. 701. PARKER BOILER COMPANY—OSBURN FLEXIBLE CONDUIT COMPANY-INTERNATIONAL SPRINKLER COMPANYOIJMER FARE REGISTER COMPANYINTERNATIONAL REGISTER COMPANY \Y. T. VAN DORN COMPANY SCHOEN STEEL WHEEL COMPANYPENNSYLVANIA STEEL COMPANY JQ2 STREET RAILWAY JOURNAL. [Vol. XXVI. No. 15.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
