Vending Machine Parts


Investment Cast in Stainless, for Less By Owen W. Hale,


Independent Steel Castings Co. , Inc.


Big costs were saved by investment casting these coffee coin-machine parts. Many expensive secondary operations were


eliminated. The brew chamber (left) was originally to have been a stamped flange


brazed to the casting. The hose fitting (right) was designed to be a brazed assembly of


machined tubing and stamped flange. Both are now economically investment cast from


316 stainless steel and then electro-polished. The hose fitting is cast ready for use; the


brew chamber requires only some secondary turning and minor drilling on the stem.


Another benefit, besides lower cost, is the advantage of having a one-piece stainless part for food machinery use.


Three Parts Become One By Paul F. Foley,


Economical Investment Casting Harcast Company, Inc.


What would have been three separate parts- and several costly fabricating operations- has been investment cast into one compact, economical unit.


Originally designed to be fabricated from stainless tubing, the piece (above r ight ) would have required ( 1) milling of the bayonet slot, (2 ) welding a piece of stainless plate to the tubing plus


(3 ) welding a stainless washer inside. The other casting (bottom right) was initially designed to be assembled from three pieces of stainless plate. This would have required a laborious hogging of the piece from solid


material, then milling and drilling to correct size. With investment casting, considerable savings in


production cost and operation time on both pieces have been realized.


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