US1913858A - Trimmer - Google Patents

Description

Patented June 13, 1933 I UNITED STATES PATENT (Fries JOSEPH SCHWARTZ, or PHILADELPHIA, PENNSYLVANIA, ssIeNoit To WESTCOTT &

THoMsoN,

. VANIA TRIMMER Application filed December 21, 1929;' Serial 'No. 4-15,?57.

/ truing or squaring to rectangular form of blocked electrotypes, stereotypes, photo-en- I a track or rail for guiding the work rest 9.

gravings or the like.

My improvements are applicable to trimming machines of all usual types and in accordance with my invention one of the work rests engaging a work edge for positioning another work edge relative to the cutter of the trimming machine is provided with a bearing' member which is angularly ad ustable relative to the line of cutting so as to accommodate the angularity of the block edge engaged by such member and afford a firm support against the thrust of the cutter. Preferably means are also provided whereby such angularly adjustable member may be quickly and accurately brought to position parallel to the line of cut;

The characteristics and advantages of my improvements will more fully appear from the following description and the accompanying drawing of an illustrative embodiment of my improvements as applied to one type of machine.

In the drawing, Fig. 1 is a top plan View of a trimmer having my improvements applied thereto; Fig. 2 is a transverse sectional View on the line 2-2 of Fig. 1; Fig. 3 is a transverse sectional View on the line 33 of Fig. 1; Fig. 4 is an enlarged fragmentary view on the line 4c4 of Fig. 2; and Fig. 5 is an enlarged fragmentary View of the parts shown in Fig. 4 at right angles thereto.

The trimmer shown in the drawing, to which my improvements are illustratively applied, consists of a base or bed -1 provided with suitable rails 2 upon. which a Work-table 3'is reciprocable toward and from a cutter 4 adapted for sawing through the metal and wood of a blocked electrotype or the like. The cutter may be provided with usual knives and rotated at high speed by a motor 5. A gauge 6 is aligned with the cutter so that its edge is always parallel with the line of cutting and may be adjusted toward such line by the feed screw 7 OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- The table has an upwardly projecting work rest 8 along one edge thereof and disposed normal to theline of cutting and the edge of the gauge 6. A second Work rest 9 is slidable over the table and is slotted or grooved to fit over the rest 3 which forms To effect and control the movement of the work rest 9, a bearing 10 may be fixed to the rail 3 by a thumb-screw 11 and has journalled therein the end of a screw 12 which passes through apertured bearings 13- of the work rest 9. A knurled nut 14: is threaded on the screw between the bearings 13 and the Work rest may be fixed against movement by a thumb-screw 15. i

The straight edge 16 of the work rest 9 is normal orperpendicular to the work rest 8 and parallel to the line of out.

In accordance With my improvements in the embodiment thereof illustrated,an arm 17 at the end of the body of the work resthas pivoted thereto a bar or rod 18 having an aligning bearingedge 19 for engaging an edge 20 of a block 21. Such blocks common- 1y have no edge true or square with relation to the composition upon a printing plate fixed thereto. The block is therefor aligned with the cutter or line of cut by means of the gauge 6; the Work rest 9 is movedinto juxtaposition thereto by rotating the nut 14 the bar 18 is then moved angularly on its pivot until its edge 19 bears against the edge 20 uniformly along the length thereof, and the table 3 is moved along its rail to bring the work under the cutter 4. r

The angular adjustment of the bar 18 is preferably effected by means of a screw 22 having its end loosely pivoted vto the bar 18 so as to'permit accurate movement of the bar relatively to the screw. The threaded poi tion of the screw 22 is engaged by a knurled nut 23 disposed between apertured bearings 24 on the body of the work rest 9. By rotating the nut 28 the rod 18 is moved to- Ward or from the edge 16. r

When one true edge has been provided on the block as described, it is desirable that the edge 19 of the bar 18 be quicklymoved into parallelism with the line of outer with the edge of the gauge 6, and to effect this readily and accurately a spacer 25 is journalled on a hollow hub 26 projecting from one of the bearings 24. The spacer is readily movable into and out of the path of the rod 18 and when moved out of the path of the rod may be supported by a stop 27. The spacer is of such width that when it is engaged by the body of the work rest 9 and by the rod 18, the edge 19 is parallel with the line of cut. Hence when a true or squared face'of the block 21 is rested against the edge 19 with the bar 18 in such position, the op posite edge of the block 21 will be trued or squared up when the table is moved along its rails to carry the work under the cutter.

After one block edge has been squared, such squared edge may, if desired, be rested against the work rest 8 to cut a true edge at right angles thereto.

The remaining edges are squared by resting a trued edge against either the work rest 8 or the edge 19 and moving the table with the Work thereon under the cutter.

Having described my invention 1 claim:

1. A trimming machine comprising a rotary cutter, a work rest normal to the line of cut of said cutter and adapted for engaging an edge of work for positioning another edge of said work relatively to the cutter, a work rest lying substantially parallel with the direction of cut of said cutter and having a bearing member which is angularly adjustable in a horizontal plane relatively to the line of cut so as to accommodate the angularity of a block edge engaged by such memher, and means permitting the movement of said ang'ularly adjustable member quickly and accurately to position parallel to the line of cut of said cutter.

2. A trimming machine comprising rotary cutter, a work table reciprocabl-e toward and from said cutter, a work rest projecting upwardly from said table and disposed normal to the line of cut of said cutter, a second work rest slidable over the table toward and from the cutter and having a straight edge parallel to the line of cut of said cutter, a bar pivotally connected with the second named Work rest and having an aligning bearing edge movable angularly on its pivot, means for effecting gradual movement of said pivoted bar relative to said second named work rest and adapted to be quickly rendered inoperative, and a spacer movable into and out of the path of movement of the bar and aligning the bearing edge of said bar with the line of cut of said cutter when said means is inoperative.

3. A trimming machine comprising a rotary cutter, a work table reciprocable toward and from said cutter, a work rest on said table and disposed normal to the line of cut of said cutter, a second workrest slidable over the table and grooved for the passage of said first named work rest, said first named work rest forming a guide for the second named work rest, said second named work rest having apertured bearings, a nut disposed between said apertured bearings, a rod pivotally connected with the second named work rest and having an aligning bearing edge movable angularly relative to the line of cut of said cutter, a screw pivotally connected with said bar and threaded in said nut, and means permitting the movement of said rod member quickly and accurately to position parallel to the line of cut of said cutter.

4. A trimming machine comprising a rotary cutter, a work table reciprocable toward and from said cutter, a work rest on said table and disposed normal to the line of cut of said cutter, a second work rest disposed substantially normal to said first named work rest, a rod pivotally connected with said second named work rest and provided with an ali 'ni11g bearing edge, means for gradually adjusting the aligning edge ofsaidrod angularly to the line of cut of said cutter, a spacer journalled relatively to said second named work rest and movable into and out of the path of said rod, said spacer positioning said rod relatively to the second named work rest with its aligning edge parallel to the line of cut of said cutter.

In testimony whereof I have hereunto set my hand this 13th day of December, 1929.

JOSEPH SCHlVARTZ.

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