. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . inserted in place of the drill without moving thetripod, and the lewis-hole finished by broaching down thepartitions. This obviates the difficulty of breaking downthe partitions in the old plan of diverging holes, as shownin the right side of Fig. 11. Gaddino iMachixes.—A quarry gadder is a machineby which holes are inserted into the side of the bench forthe insertion of plugs and feathers, by means of whichthe bloc
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . inserted in place of the drill without moving thetripod, and the lewis-hole finished by broaching down thepartitions. This obviates the difficulty of breaking downthe partitions in the old plan of diverging holes, as shownin the right side of Fig. 11. Gaddino iMachixes.—A quarry gadder is a machineby which holes are inserted into the side of the bench forthe insertion of plugs and feathers, by means of whichthe blocks are separated in the quarry. Fig. 12 illustratesa gadding machine, designed by the writer of this paper,and made by the Ingersoll-Sergeant Drill Co. This ma-chine is used for putting a series of holes on a true line instone, for the insertion of plugs and feathers for breakingup the blocks. It is used inconnection with the channel-ing machine in what is called^^ _ lofting, or breaking from li J ^.,. 4j the floor of the quarry into the V -^fetw l\ cut made behind, and for breaking the stone in sectionsby a series of horizontal holesdriven into the side of the. Fi(i. 9.—Diainoiid ctianneler.
Size: 1235px × 2024px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
