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ADAMS'S SUSPENDED GIRDER RAIL. Some interesting experiments were marle ou Monday, on a new system of permanent way invented by Mr W. B. Adams It was laid down under Ihe direction Of Mr. Joseph Cubitt, C.E., on part of the up-line of the Great Northern Railway, over which the heavy coal traffic passes to the goods station, Maiden lane. The new system of permanent way by Mr. Adams, consists of a rail simi!ar to the ordinary rail but two inches deeper-that is seven inches instead of five inches in depth. There is a flange at the top and bottom ot the rail. On each side of the rail are fitted angle brackets. One side of the bracket fills up the 5pace between the flanges, and is secured to the rails by bolts. The other side of the bracket extends outwards from the rail, forming a kind of lomiitndinal shelf at each side of the rail level with the ballast and immediately under the upper flange of the r il; so that when blasted all • that is seen of the rail is the upper fl -inge, which rises about '2.$inches above the upper side of the bracket or longitudinal shelf These project about 61 inches on each side of the rail, and form with the rail a lon- gitudinal and horizontal hearing of 13 inches in width The ballast is packed from the surface at each side of the rail, under the brackets, and thus secure the perma- nent way. There are no wooden sleepers used, the guage of the ra Is being preserved by iron ties about nine feet apart. The whole is const, ucted of wrought iron, and consists of four parts viz he rails, brackets, the bolts and tie-bars. Each joint is protected by two whole pieces at each side of it, forming in the whole, when put together, t compact mass The rails were made at the Ehbw Vale Works, and are 18 feet in length. The various parts are contrived that no mistake can oc,cur in putting them together, andthey can also be laid down with great facility. By this plan of rail, the bi aring surface is brought within about iy inches of the tread of the wheels, and the consequence is that 4jie rail is prevented from rocking, the lower part of the rail forming a kind of keel; and the brackets constitute bearers on each side, which impart a steadiness to the rail and a smoothness in passing over it. The packing being close to the surface, the greatest regularity can be preserved in packing the ballast under the beareis, so as to give a uniformity to the bearing of the rails. but obtainable by any other method in use. On the ordinary system the packing under the sleeper is 12 inches below the top of the rail. while on Mr. Adams's plan it is not more than about three inches. The rails and bearers form one continuous piece from end to end of the line. The portion of the Great Northern line upon which the new way is laid has a gradient of 1 in 110, and coal trains of 30) tons and the heaviest engines pass over it about GO times a day. It has been laid down about a month, and appeared in excellent condition. On the suggestion of Colonel Kennedy, of the Bombay and Baroda Railway, the ballast for about six feet in length, at two or three places, was removed from under the rail and bearers, and an engine of 35 tons weight oassed overt iseveral times, causing each time a slight deflection of about one eigth offon in inch, and was con- sidered by the other engineering gentlemen present namely, Messrs. J Cubitt, B. Burleigh, forde, C. H. Gregory, Pole, D.K. Clarke, and J. Robinson, a very satisfactory test of the strength of the giider-rail. It was also observed that anything out of order in that kind of permanent way could be readily detected as it would be visible. The weight of the rail is about 84ib. per yard, and of the brackets 84Ib., making together 16 !lb. per yard. It was stated that the cost of the per- manent way on the plan would be about £ 300 per mile more than the ordinary line of heavy rails and the cost of renewal would average less than one half Some of the men said they could pack up lOiI yards of line on the new plan in less time than they could open "JO yards of the ground prior to packing the slenpers of the ordi- nary rails, and therefore it was presumed that a consider- able saving in the labour of maintenance of way would be effected by the adoption of the new plan. It is under- stood that it will be adopted on the Bombay. Baroda. and Central India Railway, being considered suitable in many respects for that country. A new method by Mr. Adams of fastening the ordinary rails to the sleepers was also tested. It c nsisted of bracket or knee fastenings bolted to tin rails and sleepers which permit of the rails bearing directly on the sleepers instead of b-ing elevated above them by the chairs ordi-. dinarily used, and thus preventing the under side of the rails being hammered against the chair, nhicl. produced noisa to the passengers and injury to the rails and rolling stock.




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