Buildings and structures of American railroads. A reference book for railroad managers, superintendents, master mechanics, engineers, architects, and students (1893)
Berg, Walter G. (Walter Gilman), 1858-1908 · New York, J. Wiley & Sons · leaf 199
arriedfrom the point A. As will be readily understood, allnecessity for latches is done away with, as the closedapron forms an absolute and reliable lock for the innerdoor. Two segmental castings are attached to the lowerend of the inner door, and small angle-iron shoes are fittedover the lower end… … casting are the same, but tliecentreof the former is a trifle■ ^ ■ lower and forward of the latter, thus constantly relieving the pressure against the inner door as the apron is lowered. The casting is so made that it maybe adjustedup or down somewhat by loosening the f-in. bolt at the back. The…
Railroads -- Buildings and structures · Buildings
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