. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fig. 25.—Main bearing—section. surround the entire valve. The valve can be easily operated with one liand upon the smoothvalve-steni, when under full pressure of steam. The relief-valve is in the form of a steam-tight piston, which rests on shoulders even with the valve (not on the valve itself), and is. FlO. 27.—The Biill triple-expansion enpine. kept in place by a stool spring at tlic haek. Fig. 25 is a section th
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fig. 25.—Main bearing—section. surround the entire valve. The valve can be easily operated with one liand upon the smoothvalve-steni, when under full pressure of steam. The relief-valve is in the form of a steam-tight piston, which rests on shoulders even with the valve (not on the valve itself), and is. FlO. 27.—The Biill triple-expansion enpine. kept in place by a stool spring at tlic haek. Fig. 25 is a section through tlie main tlie two bearings in a single casting, wilii tiie overhang at each end nearly lialanecdand reduced to a minimum l)y means of olTset liubs. Fig. 2(i is another view of the bearing,showing the Habl)itt liners. These are all east in an iron mold, so that eiich one is an exactduplicate of every other one, anil can Ije (juickly removed and re])lac(d. The liners are usedin the main-bearing, the cr()., and the erank-pin. In the two latter places they arebedded in brass boxes, which are free to expand. Thus, should the pin heat, the brass, having ENGINES, STEAM, STATIONARY RECIPROCATING. 307 a greater expansive power than steel or iron, and being free, will expand and loosen the fit,instead of tightening it, as is the case when bound with an iron band.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
