US 3,945,286 A · Portable radial arm saw

Abstract

A radial arm saw features light weight, portability and simplicity of construction. A standard supports a one-piece radial arm that comprises a pair of horizontal, vertically spaced cantilever rails rigidly joined at their outer ends by an integral connecting member. A sliding runner spans the rails and has vertically spaced bearing parts receiving corresponding rails. A vertical spindle on the runner is connected at its lower end to the top of a cage that receives a conventional portable circular saw, thereby suspending the saw unit beneath the rails and above the work surface. The spindle permits the cage to be rotated for either cross-cut or ripping operations, and the radial arm is adjustable in a horizontal plane by a special detent arrangement on the standard that allows the elevation of the saw unit to be varied in any selected radial position.

Claims13

Dependent claims

Radial arm saw apparatus comprising:

a work-supporting surface;
an upright support adjacent said surface;
a pair of vertically spaced, upper and lower cantilever rails fixed to said support, extending generally horizontally therefrom above said surface, and each presenting an outer end remote from said support,
said rails lying in a common vertical plane;
a connecting member spanning the outer ends of said rails, rigidly joined to said ends and maintaining the same fixed relative to each other;
a power-driven saw unit;
a carrier beneath said lower rail receiving said unit and mounting the same in an operational position;
and
means on said rails movable therealong and suspending said carrier therebeneath, whereby the carrier and hence the saw unit can be advanced along a path defined by said rails to make a cut in a workpiece positioned on said surface.

6 more elements

Dependencies are inferred from the claim text.

Portable radial arm saw

Life of this patent

Portable radial arm saw

Life of this patent

Abstract

Claims13