Adjustable cutting machine

Claim 2

A machine for cutting sheet material having a base and a motor assembly mounted thereon adapted to rotate a circular cutting blade about an axis normally parallel to said base comprising: main plate means pivotably supporting said motor and blade assembly to said base, a locking arm element pivotably secured to said pivotably supporting means, and to said base about a common pivot axis with the axis of said pivot of said pivotably supporting means; and means securing said pivotably supporting means in a substantially fixed set position including means for locking said locking arm element in place, whereby the axis of said blade or the plane of said cutting blade may be set at a predetermined angular position so as to cut said sheet material at a desired angle with respect to the plane of said sheet material.

Claim 3

The machine according to claim 1, including rolling means on said base for moving said machine about a surface upon which the machine is placed for cutting said sheet material.

Claim 4

The machine according to claim 1, wherein said pivotably supporting means includes a main supporting plate or frame element having means for moving said machine.

Claim 5

The machine according to claim 3, wherein said means for moving said machine comprise a plurality of handles, at least one of which is adapted to be manually gripped for guiding the machine as the material is cut.

Claim 6

The machine according to claim 1, wherein said predetermined angular position ranges from about 20° to about 90°.

Claim 7

The machine according to claim 5, wherein said anuglar position is measured from either side of the cutting plane of said blade where said blade is disposed substantially perpendicularly to said base.

Claim 8

The machine according to claim 1, wherein said means for locking said element in said predetermined angular position comprise an adjustable locking element on each side of said element adapted to abut against said element so as to maintain it in said position.

Claim 9

The machine according to claim 7, including indicia means on at least one of said locking elements and on said base for aligning said machine in any said predetermined angular position.

Claim 10

The machine according to claim 8, including indicia means on the other of said locking elements and on said base for aligning said machine in a generally vertical position for cutting a substantially right angled edge on said sheet material.

Claim 11

The machine according to claim 1, including movable guage means for cutting predetermined widths of said sheet material.

Claim 12

The machine according to claim 10, wherein said guage means includes swivel means adapted to be adjusted so as to conform to an angular cut surface.

Claim 13

The machine according to claim 10, wherein said movable gauge means comprises a screw spindle, a pivotably supported element on said spindle movable therealong upon rotation of said spindle, means for locking said spindle against endwise movement comprising a plurality of notches spaced along said spindle, pivotably supported locking means adapted to engage any one of said notches, said spindle being released from said pivoted locking means by angularly moving said spindle about the pivotal support of said element and out of locking engagement with said locking means, whereby said gauge means may be adjusted manually independently of said screw spindle, means connecting said element and said gauge means for adjusting movement together upon rotation of said spindle, and said gauge means having movable surface means adapted to conform to an angular cut surface.

Claim 14

The machine according to claim 12, wherein said pivotably supported locking means is mounted on said pivotably supporting means to the rear of said cutting blade, so as to enable the pivoting of said pivotably supporting means while maintaining said screw spindle substantially parallel to said base.

Claim 15

The machine according to claim 13, wherein said notches form annular recesses spaced equally from each other, and said pivotably supported locking means is provided with an upwardly extending clevis portion adapted to be engageable with any one of said recesses.