. American engineer and railroad journal . with the solid beam manu-factured by this company. Since exhibiting the strut at Sar-atoga the company has taken a number of orders to equippassenger cars with it. It is the invention of Mr. Thomas , Superintendent of the Monarch Brake Beam Com-pany (Ltd.). The Railway Age deserved the thanks of the conventionsfor the Daily published at Saratoga this year. It was bet-ter than ever. 276 AMERICAN ENGINEER, CAR BUILDER THE JOHNSON HOPPER DOOR. Our three engravings show a new type of fastening for thehopper doors of coal and ore cars which after
. American engineer and railroad journal . with the solid beam manu-factured by this company. Since exhibiting the strut at Sar-atoga the company has taken a number of orders to equippassenger cars with it. It is the invention of Mr. Thomas , Superintendent of the Monarch Brake Beam Com-pany (Ltd.). The Railway Age deserved the thanks of the conventionsfor the Daily published at Saratoga this year. It was bet-ter than ever. 276 AMERICAN ENGINEER, CAR BUILDER THE JOHNSON HOPPER DOOR. Our three engravings show a new type of fastening for thehopper doors of coal and ore cars which after critical examina-tion leads to the conclu-i<.n that it will work satisfactorily andfulfill the severe requirements of such fastenings. Hopperdoors must be safe against accidental opening, they must betight and the mechanism must be simple in order to be easilyoperated and economically maintained; also the devices mustbe self contained, not requiring levers or wrenches, and themechanism must be suflicipntly strong to resist strains from. Fig. \. material clogging the doors or from freezing. These requisitesall appear to be provided for in this door, with the furtherrecommendation that the parts are not liable to damage whendoors are left open on the road. Instead of being hinged to the hopper these doors are swungfrom it by straps, shown in the engravings, the pivots beingthe hopper irons, and the effect of its construction is to bindthe doors and the hopper together, insuring tightness whenclosed. The doors are not different from those used withhinged connections to the hopper direct. The two doors are connected by a pair of toggle levers ofdifferent lengths. The shorter of these two arms is fastenedto its door by a bracket. The longer arm is bent into a shaft
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
