. Railway mechanical engineer . h—jj-H Feed Screw ot the ttub Drilling Device a bearing in the feed screw sleeve. The gear which carriesthe drill socket has a ball thrust bearing and lock nuts onthe end of the hubs which liold it in place in the gear bo.\. inside the fitting J; a coiled spring shown at 4 on thedrawing is arranged within the fitting to effect the returnstroke of the tamper after the l)low of the hammer hasdriven it out. PNEUMATIC TAMP FOR THERMIT WELL) MULUa Difficulties in Australia.—The Federal railway Bv J. F. D. authorities in .Australia have had offere
. Railway mechanical engineer . h—jj-H Feed Screw ot the ttub Drilling Device a bearing in the feed screw sleeve. The gear which carriesthe drill socket has a ball thrust bearing and lock nuts onthe end of the hubs which liold it in place in the gear bo.\. inside the fitting J; a coiled spring shown at 4 on thedrawing is arranged within the fitting to effect the returnstroke of the tamper after the l)low of the hammer hasdriven it out. PNEUMATIC TAMP FOR THERMIT WELL) MULUa Difficulties in Australia.—The Federal railway Bv J. F. D. authorities in .Australia have had offered for their considera- The practice on most railroads in making Thermit welds tion no fewer than 126 different devices to meet the break of is to tamp up the mold box liv hand. This is a rather long gage difficulty, Ijut none has found favor. They are of the I v^ m^ -=j<—/I-—*i^h-.
Size: 2022px × 1236px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
