. Canadian foundryman (1918). re economicalproduction. The Power Squeezer WithStripping Plate A stripping plate is of benefit on a power squeezei only when castings of the greatest exactness are want-ed, or where a quite deep straight draw is necessary. For ordinary work on a power squeezer all that is necessary is to draw the plate and pattern together or tolift the mould from the plate andpattern. In some cases stools are agreat help but it is seldom necessary togo to the expense of making strippingplates for work on power Jar-Stripping Plate MachineThe combination of the jarri
. Canadian foundryman (1918). re economicalproduction. The Power Squeezer WithStripping Plate A stripping plate is of benefit on a power squeezei only when castings of the greatest exactness are want-ed, or where a quite deep straight draw is necessary. For ordinary work on a power squeezer all that is necessary is to draw the plate and pattern together or tolift the mould from the plate andpattern. In some cases stools are agreat help but it is seldom necessary togo to the expense of making strippingplates for work on power Jar-Stripping Plate MachineThe combination of the jarring prin-ciple to ram the sand and the strippingplate to draw the pattern makes a com-bination embodying two of the bestprinciples so far adapted to mechanicalmoulding. The jar-ram stripping plate machineconsists of a jarring machine upon thetable of which is mounted the the pattern is the strippingplate. When the pattern is drawn fourposts are forced up engaging the strip-ping plate at the corners, thus raising. FIG. 11 FOUR-PART JOB FITTED TO ONE MACHINE. ous runs are well adapted to this clas-;of machine, particularly so if the mouldis deep or quite large in area. The jai-ring machine rams a large deep mouldnearly as quickly as a small mould sothe saving in time and physical effortis much greater on the larger sizemoulds. It has been found advantageous to performed by the machine. Notning isleft for the operator except handling thesand and handling the moulds from themachine. This type of machine requires less skillto operate than is required on a plainstripping plate machine. The sand, be-ing rammed by the machine, no skill inramming is necessary on the part of theoperator and the sand is rammed muchmore even by this machine than can bedone by hand, even by a skilled man. Small flasks can be rammed nearly asquickly by hand as by machine. How-ever, there still remains the physicaleffort required from the operator, andalso the difference in skill ma
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Keywords: ., bookcentury1900, bookdecade1910, booksubjec, booksubjectfoundries
