US 4,307,641 A · Portable sawmill

Abstract

This mill comprises two parallel guide rails which are releasably attached to the upper ends of two spaced, vertically disposed end frames, the lower ends of which are releasably attached to two parallel, elongate skid members, which can be dragged along the surface of the ground to move the mill from one site to another. Two pointed log pins are carried by vertically adjustable blocks on the two end frames, with the pointed ends of the pins facing toward each other to be engageable in opposite ends of a log for supporting a log above the ground, and beneath the two guide rails. A chain saw carriage, which is slidable on the guide rails, supports a chain saw beneath the rails to have its cutting chain travel in a generally horizontal plane, and in position to cut elongate strips from a log when the carriage is moved manually from one end of the guide rails to the other. A device is also provided for adjusting the chain saw vertically on the carriage.

Claims12

Dependent claims

A portable saw mill, comprising

a frame mounted on skids to enable the frame to be moved by dragging on the ground,
a pair of spaced, parallel guide rails mounted on said frame to be supported generally horizontally thereby above the surface of the ground upon which the frame is mounted,
a pair of spaced log-supporting members mounted on said frame beneath said pair of rails and releasably engageable with opposite ends of a log to support the latter on said frame beneath said rails,
at least one of said members being adjustable longitudinally on said frame relative to the other,
means for releasably supporting a chain saw on said frame for sliding adjustment longitudinally of said rails and with the cutting chain of said saw positioned to travel beneath said rails and in a generally horizontal plane,
means mounting said log-supporting members for vertical adjustment on said frame and operable, when a log is supported between said members, to shift one end of the log, selectively, higher than, lower than, or in horizontal registry with, the other end thereof.

3 more elements

A portable saw mill comprising

a frame having thereon an elongate, generally horizontally disposed carriage guide disposed to be supported off the ground by said frame,
a chain saw carriage mounted on said guide for manual sliding movement longitudinally thereof,
means on said carriage for releasably supporting a chain saw for vertical adjustment beneath said guide and with its cutting chain disposed to travel in a substantially horizontal plane,
means for supporting a length of wood on said frame beneath and generally parallel to said guide, and in the path of travel of said cutting chain during movement of said carriage longitudinally on said guide,
said means for supporting a length of wood comprising means for selectively raising or lowering one end of said length of wood relative to the other while supported on said frame, thereby selectively to incline the axis of said length of wood to the horizontal,
slide means on said carriage having sliding engagement with a plane, upper surface on said guide, and projecting downwardly at opposite sides of said guide to minimize any lateral sliding movement of the carriage during movement thereof longitudinally of said guide, and
a handle on said slide means extending transversely of said guide and adapted to be gripped and manipulated manually to reciprocate said carriage on said guide.

4 more elements

Dependencies are inferred from the claim text.

Portable sawmill

Life of this patent

Portable sawmill

Life of this patent

Abstract

Claims12