Control arm assembly for hinged members

作者: S Bulin

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摘要: A control arm assembly for hinged members, and including a pair of arms pivotally connected together with the free ends being attachable to member an anchor point, limiting extent pivot member. The serve as either left-hand or right-hand assembly, depending upon arrangement parts, one includes arcuate slot other has two spaced-apart openings alternately receiving bolt which also goes through slot, and, holes is received in, are righthand in assembly. may be fastened together, by means threaded knob, so that they can retained selected pivoted position hold certain position.

参考文章(2)
Charles T Ashman, Friction device for doors, &c. ,(1909)