. Canadian machinery and metalworking (January-June 1919). // what you need is not advertised, consult our Buyers Directory and write advertisers listed under proper heading January 16, 1919. CANADIAN MACIIIN E K Y ii. 6-A Potter & Johnston Automatic Chucking and Turning Machine 6-A Potter & JohnstonAutomatic Chuckingand Turning Machine Geared head, havingthree automatic changesof spindle reaming andthreading slide. Automatic back facerbar through convertible twoand three-jaw scrollchuck. Spindle 5% inches dia-meter, hole 3y inchesdiamete
. Canadian machinery and metalworking (January-June 1919). // what you need is not advertised, consult our Buyers Directory and write advertisers listed under proper heading January 16, 1919. CANADIAN MACIIIN E K Y ii. 6-A Potter & Johnston Automatic Chucking and Turning Machine 6-A Potter & JohnstonAutomatic Chuckingand Turning Machine Geared head, havingthree automatic changesof spindle reaming andthreading slide. Automatic back facerbar through convertible twoand three-jaw scrollchuck. Spindle 5% inches dia-meter, hole 3y inchesdiameter. Increased output means reduced cost,both are readily obtained on Potter & Johnston Manufacturing Automatics DO IT AUTOMATICALLY All operations are entirely automatic. Oneattendant can readily run a battery of two tosix machines. In addition to automatically machining allvarieties of castings from iron, bronze or steel,also forgings, the machines are also recom-mended and are widely used for finishing piecesfrom bar starch which have previously been cutoff to length. This is a highly economical methodof nroducinff gear blanks, bushings, studs, etc. Catalog gives full particulars. Drop a ca
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
