was designed that would eliminate the metal-to-rubber connection and the possible chafing 

 problem this creates. This fifth fastening concept is shown in figure 6 euid is made up of a 

 central core of Flexane 80 putty, the conveyor belt on one end and a steel plate on the 

 other. 



This concept has another advantage also. Since rubber is buoyant, there is the possibility 

 that it would be cut by the propeller of a passing boat. This attachment would allow the 

 use of a few feet of chain first to get the belt out of the propeller's way and still 

 eliminate any chafing. The following technique was used: 



1- All steel plates were ground on a bench grinder according to the adhesive 

 manufacturer's instructions until white metal showed. 



2- Clean steel parts with cleaner provided in the kit, let dry and apply the 

 Flexane Primer for Metal. 



3- 3/8-inch-diameter holes were drilled into the belts. Since drills don't cut 

 through the belt cleanly, the holes were then burned out with a heated steel 

 rod. 



4- The belts were cleaned and prepared as explained previously. 



5- Prepared mold boxes with a release. 



6- Flexane 80 putty was mixed and poured into each mold, then the steel and 

 belting were placed in the mold and the putty forced through the drilled 

 holes. Then more Flexane was poured over the steel and conveyor belt. 



7- TTie ffiistenings were left in the molds for two days at a temperature of 65 

 to 70°F. 



Conveyor Belts Used 



Four conveyor belts were used. 



1- Uniroyal UsFlex Straightwarp belting. The word "straightwarp" describes a 

 particular type of carcass construction, and is shown in figure 1-7 of the 

 Conveyor and Elevator Belt Handbook. The particular belt used had a single 



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