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dial, the bar including a transverse head adapted to travel the beveled edge of the relatively fixed member and to lock behind the projection; and a spring uniting the bar 5 with one member of the handle, the spring constituting a counterpoise and a means for holding the head engaged with the pro- jection.
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In testimony that I claim the foregoing as my own, I have hereto affixed my signature 10 in the presence of two witnesses. DOUGLAS HENDERSON. Witnesses: T. F. FRAZIER, E. P. KING.
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