34 



THE POLK SYSTEM 



Detachably connected to the outer forms is a series of stanch- 

 ions provided with an inwardly directed overhanging- arm which 

 has an aperture for receiving and retaining verticle reinforcing 

 rods. These rods, as the building of the wall proceeds are twined 

 about transversely by horizontal reinforcing. 



Polk System machine with two sections of forms removed showing interior, 

 by patents in United States and Canada. 



Fully covered 



Both inner and outer scaffoldings is swung from the radiating 

 T irons, as can be seen in the illustrations. 



For filling in between the forms a V shaped dumping bucket is 

 provided. It is pivo tally supported by a crane above the hub so 

 that it can readily be swung to any part of the wall space. The 

 bucket is hoisted by means of a rope and series of pulleys so 

 arranged that the hoisting force is applied horizontally from with- 

 out the structure. A small opening is cut in wall at the bottom of 

 the first setting of concrete through which the hoisting rope works. 

 When the bucket is hoisted it is coupled to a carrier on the crane 

 by the means of a hinged hook. 



"They are not built of pieces and they 

 cannot go to pieces. ' ' 



