초록

The blade of a jig saw is mounted in a holder which is moved up and down by a rotary eccentric. A stack of leaf springs is cantilevered on the frame of the machine and is attached rigidly to the holder to cause the blade to move in a substantially elliptical orbit.

대표청구항 ▼

A saw having a support, a power driven shaft mounted on said support to rotate about a predetermined axis, a holder attached turnably to said shaft at a location disposed eccentrically of said axis, means for attaching an elongated saw blade to said holder, and a resiliently yieldable strap joined t

A saw having a support, a power driven shaft mounted on said support to rotate about a predetermined axis, a holder attached turnably to said shaft at a location disposed eccentrically of said axis, means for attaching an elongated saw blade to said holder, and a resiliently yieldable strap joined to said support and said holder to cause said holder to move in a substantially elliptical orbit during rotation of said shaft, said strap comprising a stack of leaf springs disposed in face-to-face relation, each of said springs having one end anchored to said support and having an opposite end joined to said holder.