. American engineer and railroad journal . ines isdriven by a manilla rope con^^isting of 14 strands, four of whichrun over pulleys on each Moor to drive the shafting on thatdoor. The Company has provided well appointed and comfortableofhces and drawing-room, and all the floors of the shop arewell lighted and warmed, and have the thrifty and prosperousappearance for which Philadelphia machine works are noted. The engraving given Is from a photograph of a hollow-chiselmortising machine made by the Company, and a comparisonbetween It and the machines made some time ago for the samepurpose will s

. American engineer and railroad journal . ines isdriven by a manilla rope con^^isting of 14 strands, four of whichrun over pulleys on each Moor to drive the shafting on thatdoor. The Company has provided well appointed and comfortableofhces and drawing-room, and all the floors of the shop arewell lighted and warmed, and have the thrifty and prosperousappearance for which Philadelphia machine works are noted. The engraving given Is from a photograph of a hollow-chiselmortising machine made by the Company, and a comparisonbetween It and the machines made some time ago for the samepurpose will s Stock Photo
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Contributor:

Reading Room 2020 / Alamy Stock Photo

Image ID:

2CH59EM

File size:

7.2 MB (238.1 KB Compressed download)

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Dimensions:

1840 x 1359 px | 31.2 x 23 cm | 12.3 x 9.1 inches | 150dpi

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. American engineer and railroad journal . ines isdriven by a manilla rope con^^isting of 14 strands, four of whichrun over pulleys on each Moor to drive the shafting on thatdoor. The Company has provided well appointed and comfortableofhces and drawing-room, and all the floors of the shop arewell lighted and warmed, and have the thrifty and prosperousappearance for which Philadelphia machine works are noted. The engraving given Is from a photograph of a hollow-chiselmortising machine made by the Company, and a comparisonbetween It and the machines made some time ago for the samepurpose will show the great advance and the many improve-ments secured in this class of tools. The novelty of this machine consists of the peculiar forma-tion of the chisel, which is square and is fitted with an augermade to revolve inside it. The end of the auger projectsslightly beyond the edge of the chisel, and when presented tothe timber It bores a round hole—the chisel following it andsimultaneously squaring out the four corners and sides. Mor-. NEW HOLLOW CHISEL MOR USING MACHINE.MADE BY THE BERRY & ORTON COMPANY, PHILADELPHIA. for the publication of some notes of a recent visit to theirshops. The Company is well housed in a four-story buildmg on thecorner of Twentv-lhird and Arch streets in Philadelphia. Itsspecialty is tools for working wood. Among these are band-saw machines, the manufacture of which is very Interesting.The steel blades are made of Swedish steel imported speciallyfor this purpose, and vary in thickness from No. 24 to No. 14wire gauge and from yl; to 12 in. in width. Some of the sawsare as much as 54 ft. long. The steel when received here Isproperly tempered for use. The first step is to straighten theblades—that Is, to take out any kinks that may exist. Thisis done by first rolling the blades and then hammering byhand. Any inequalities are detected by the reflection o( lighton the polished blade. The teeth are then punched out andafterward filed and set by a ma

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