Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Counter Spring<br />
long spring towers above the machine. One<br />
A .end of the spring connects to a hook on the<br />
pivoted summing lever; the other end connects to<br />
a curved, tapered post. This large-diameter spring<br />
counterbalances the accumulated pull on the summing<br />
lever of the twenty individual smaller springs.<br />
The machine’s operator changes the tension on this<br />
counter spring by loosening a square-head screw<br />
and adjusting the height of the post up or down.<br />
Close examination reveals gouges that mar the finish<br />
of the post that were left by the screw during<br />
previous height adjustments of the counter spring.<br />
44 45
Change language