Milbar Corporation

Joe G Box

J Edward Anderson

A wire twisting tool that includes a pair of jaws for clamping wire ends to be twisted and a removable spin drive unit for imparting rotation to the jaws to effect twisting of the wire ends. The spin drive unit is threadedly attached to a housing that encloses a spiral drive shaft. A pair of shaft engaging elements is mounted in a spaced apart relationship within a tubular carrier that forms part of the spin drive unit. The one end of the carrier is threaded and threadedly engages the housing. One of the shaft engaging elements is fixed to the carrier so that as the shaft is pulled through the drive element, rotation is imparted to the carrier. The other element slidably supports the drive shaft in order to maintain it in a predetermined alignment with respect to the carrier. In one embodiment, the support element is fixed to the carrier whereas in another embodiment it is free to move within the carrier to accommodate a change in pitch in the spiral shaft. In still another embodiment, the support element is attached to one end of the spiral shaft and is slidable within the housing. The shaft engaging elements can be formed from metal stamping to provide a relatively inexpensive construction and a construction in which the primary wear components can be easily replaced or removed for sterilization.

Wire twisting tool

In a hand tool, a pair of elongated tool arms interconnected by a pivot, a torsion spring having legs which are connected respectively to the tool arms to bias the arms to an open position, and a plier lock element member having a spaced pair of eyes and a connecting bridge, with the plier element being slidably connected to the torsion spring legs such that the element is movable between locking and release positions. When in the lock position, the element is near the spring interconnection and acts to restrain the spring from biasing, and to inhibit relative work movement of the tool arms. When in the release position, the element selectively permits work performing movement of the arms about the pivot. One of the spring legs includes a working offset portion, and each of the spring legs includes a locking offset portion located near its connection with the associated one of the tool arms.

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Macedonia, OH, United States of America

Joe G Box