Sheetboard cutting machines

Claim 2

A sheetboard cutting machine comprising: a. an upstanding support frame; b. a horizontal fence mounted frontally to said support frame and adapted to carry said sheetboard thereon edgewise; c. a saw guide extending upwardly and across the front of said support frame in spaced parallel relation thereto; d. a saw mounting assembly slidably mountEd upon said saw guide; e. means mounted upon said saw mounting assembly for rotatably carrying the saw, whereby the saw can be selectively angularly rotated with respect to said saw guide; f. means for movably carrying the saw guide upon the support frame, whereby the saw guide can be moved upon said support frame in a plane parallel thereto, to enable a horizontal cut to be made in the sheetboard without advancement thereof; and g. means rotatably interconnecting said saw guide carrying means and said saw guide, whereby said saw guide can be rotated in a plane parallel to said support frame.

Claim 3

A sheetboard cutting machine comprising: a. an upstanding support frame; b. a fence extending in a horizontal plane mounted frontally to said support frame and adapted to carry said sheetboard thereon edgewise; c. a saw guide extending upwardly in front of said support frame in spaced parallel relation thereto; d. a saw mounting assembly supported on said saw guide for slidable movement therealong; e. means interconnected between the top and the bottom of the support frame and the respective extremities of the saw guide for supporting said saw guide in horizontally slidable relation to the support frame, and f. means for rotating said saw guide in a plane parallel to the support frame through a predetermined angle with respect to the vertical.

Claim 4

A sheetboard cutting machine comprising: a. an upstanding support frame; b. a fence extending in a horizontal plane mounted frontally to said support frame and adapted to carry said sheetboard thereon edgewise; c. a saw guide extending upwardly in front of said support frame in spaced parallel relation thereto; d. a saw mounting assembly supported on said saw guide for slidable movement therealong; e. means interconnected between the top and the bottom of the support frame and the respective extremities of the saw guide for supporting said saw guide in horizontally slidable relation to the support frame, and f. means for rotating said saw guide in a plane parallel to the support frame through a predetermined angle with respect to the vertical.

Claim 5

A machine as defined in claim 2 additionally including means for varying the clearance between the saw guide and the support frame.

Claim 6

A machine defined in claim 2 wherein said means for supporting the saw guide comprises: a. a top and a bottom track extending across said support frame, each of said tracks defining parallel upper and lower horizontally extending edges in vertical alignment; b. an upper and lower support plate connected to the saw guide adjacent the upper and lower extremities respectively thereof, said upper and lower support plates lying in vertical planes intermediate said saw guide and said top and bottom tracks; and c. roller means extending on horizontal axes from the rear surfaces of said upper and lower support plates, said roller means being adapted to cooperatively engage said upper and lower track edges for transport of said saw guide therealong.

Claim 7

A device as in claim 4 additionally including means for adjusting the vertical position of the top track with respect to said support frame.

Claim 8

A machine as defined in claim 5 wherein said saw guide comprises a pair of parallel guide rails and wherein said means for rotating said saw guide comprises a top and a bottom vertically extending pivot plate interconnected between said guide rails in facing relation to said upper and lower support plates respectively and adapted to pivot about said upper and lower support plates on horizontally extending axes.

Claim 9

A machine as in claim 6 additionally comprising a pair of parallel upwardly extending sleeves forwardly mounted on said upper pivot plate, said sleeves being adapted to receive and slidably support therein said guide rails, said bottom pivot plate being fixed in relation to said guide rails, whereby when said upper and lower pivot plates are pivoted about said upper and lower support plates, said guide rails are enabled to move longitudinally within said pair of sleeves.

Claim 10

A machine as in claim 6 additionally comprising first means for locking said upper and lower pivot plates in fixed relation to said upper and lower support plates respectively when said guide rails are in a vertically extending position and second means for locking said guide rails in fixed relation to said pair of sleeves in any angular position occupied by said guide rails.

Claim 11

In a sheetboard cutting machine of the type including an upstanding work supporting frame, a pair of parallel guide rails extending upwardly across said supporting frame, and a saw mount assembly supported by said guide rails for slidable movement therealong, the improvement wherein sAid saw mount assembly comprises: a. a rectangular baseplate having a circular opening therethrough said base plate including a guide rail engaging bracket mounted at each corner thereof, a plurality of positioning screws extending from said brackets radially inward to the surface of the respective guide rails engaged by said brackets and a load transmitting ball-bearing mounted within the extremity of each of said positioning screws facing the surface of said respective rails, whereby, through selective adjustment of said positioning screws, said base plate may be aligned parallel to the plane of the sheetboard; b. a one piece turntable resting on said base-plate and overlapping said opening, said turntable being provided with a plurality of radially extending peripheral notches at predetermined intervals; c. roller means extending above the surface of the baseplate adjacent said opening adapted to support said turntable edgewise for rotation about its center; d. means mounted on said baseplate in confronting adjacent relation to the edge of said turntable adapted to releasably and selectively engage said peripheral notches.

Claim 12

In a sheetboard cutting machine of the type including an upstanding work supporting frame, a pair of parallel guide rails extending upwardly across said supporting frame, and a saw mount assembly supported by said guide rails for slidable movement therealong, the improvement wherein sAid saw mount assembly comprises: a. a rectangular baseplate having a circular opening therethrough said base plate including a guide rail engaging bracket mounted at each corner thereof, a plurality of positioning screws extending from said brackets radially inward to the surface of the respective guide rails engaged by said brackets and a load transmitting ball-bearing mounted within the extremity of each of said positioning screws facing the surface of said respective rails, whereby, through selective adjustment of said positioning screws, said base plate may be aligned parallel to the plane of the sheetboard; b. a one piece turntable resting on said base-plate and overlapping said opening, said turntable being provided with a plurality of radially extending peripheral notches at predetermined intervals; c. roller means extending above the surface of the baseplate adjacent said opening adapted to support said turntable edgewise for rotation about its center; d. means mounted on said baseplate in confronting adjacent relation to the edge of said turntable adapted to releasably and selectively engage said peripheral notches.

Claim 13

A device as in claim 9 including a lock ring interconnected with said baseplate and surrounding one of said guide rails passes, and means for tightening said ring against said guide rail to prevent further slidable movement of said saw mount assembly.