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![Railway master mechanic [microform] . Fig. 2—Automatic Friction Board Lift DropHammer.the opposite fixed roll, which insures the pressure of eachroll against the lifting board, being directly opposite. Furthermore, in case the Railway master mechanic [microform] . Fig. 2—Automatic Friction Board Lift DropHammer.the opposite fixed roll, which insures the pressure of eachroll against the lifting board, being directly opposite. Furthermore, in case the](https://c8.alamy.com/comp/2CREFFR/railway-master-mechanic-microform-fig-2automatic-friction-board-lift-drophammerthe-opposite-fixed-roll-which-insures-the-pressure-of-eachroll-against-the-lifting-board-being-directly-opposite-furthermore-in-case-the-friction-rolls-should-not-be-prop-erly-adjusted-it-is-impossible-for-the-rod-to-fall-far-enoughto-allow-the-cam-to-pass-beyond-the-center-and-therebycausing-the-rolls-to-bind-and-throw-off-the-belts-the-rolls-are-a-driven-fit-to-the-shafts-and-keyed-to-thesame-the-lifting-board-is-fastened-in-the-hammer-by-means-of-fig-3drop-hammer-lifting-framewedges-which-p-2CREFFR.jpg)
Railway master mechanic [microform] . Fig. 2—Automatic Friction Board Lift DropHammer.the opposite fixed roll, which insures the pressure of eachroll against the lifting board, being directly opposite. Furthermore, in case the
![Chambersburg Engineering Co. - 1908 Article-Chambersburg Engineering Co. -Steam Drop Hammer | VintageMachinery.org Chambersburg Engineering Co. - 1908 Article-Chambersburg Engineering Co. -Steam Drop Hammer | VintageMachinery.org](http://vintagemachinery.org/MfgIndex/Images/18595-B.jpg)
Chambersburg Engineering Co. - 1908 Article-Chambersburg Engineering Co. -Steam Drop Hammer | VintageMachinery.org
![A board operated drop hammer - a clutch arrangement grabs the board which lifts the hammer and lets it drop when re… | Инструмент, Тяжелая техника, Жизненные навыки A board operated drop hammer - a clutch arrangement grabs the board which lifts the hammer and lets it drop when re… | Инструмент, Тяжелая техника, Жизненные навыки](https://i.pinimg.com/originals/00/dc/5f/00dc5fbbedf718bdbd809d7c803994a9.jpg)