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1991 - Volume #15, Issue #1, Page #34
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Breakaway Hinge For Sprayer Boom

I made this "breakaway" hingeformy sprayer boom several years and have been updating it ever since. It allows the ends of the boom to bend 90? forward or 90? back and then returns them back to spraying position very smoothly and holds them there. There's one hinge on either side of the sprayer. A single garage door spring runs between them. It also allows the outer boom ends to be folded up to the center for transport. (Robert Calhan, 1324 W. Lafayette, Ottawa,111 61350)
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1991 - Volume #15, Issue #1