US644570A - Machine for cutting holes in paper boxes. - Google Patents

Description

Patented Mar. 6, I900. C. BECK, In. MACHINE FOR CUTTING HOLES IN PAPER BOXES.

(.No Model.)

(Application filed May 11, 1899.)

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No. 644,570. I Patented Mar. 6, I900. c. BECK, 1R. MACHINE FOR CUT "NB HOLES IN PAPER BOXES.

(Application filed May 11, 1899.)

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(No Model.)

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PATENT MACHINE FOR CUTTING HOLES IN PAPER BOXES.

SPECIFICATION part of Letters Patent No. 644,570, dated March 6, 1906. Application filed May 11,1899. Serial No. 716,411. (No model.)

To all whom it may concern:

Be it known that I, CHARLES BECK, J r., a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Machines for Cutting Thumb-Holes in the Lids of Paper Boxes, of which the following is a specification.

My invention is in the nature of a machine for cutting thumb holes or notches in the edges of the lids of paper boxes in that class of paper-box work where the lids are as deep as the boxes, such notches (which in the trade are termed thumb-holes) affording opportunity for grasping the box with the thumb and a finger of one hand while the lid is removed with the other hand.

The object of the present invention is to generally improve the construction and operation of this class of machines by simplifying and cheapening the several parts; and with this object in View my invention consists in the improved construction, arrangement, and combination of parts hereinafter fully described and afterward specifically pointed out in the appended claims.

In the accompanying drawings, Figure 1 is perspective view of a machine constructed in accordance with my invention with the table removed, the outline of the table being indicated in dotted lines. Fig. 2 is a view, partly in elevation and partly in section, of the head or upper part of the machine, the legs and treadle-rods being broken away and the table removed. Fig. 3 is a view of the upper part of the machine in end elevation, looking at the right-hand end. Fig. 4 is a top plan View of the central part of the machine with table in position and a box-lid in place to be cut, the lid being shown with its top removed and the outer parts of the table and cutter-heads being broken away. Fig. 5 is a view in face elevation of a cutter-head removed from the machine. Fig. 6 is a similar view showing a different form of die and punch. Fig. 7 is a similar view with the dieremoved. Fig. 8 is a fragmentary detail sectional view on the plane indicated by the dotted line 8 8 of Fig. 3. Fig. 9 is a detail perspective view illustrating the table detached, looking at the under side.

tudinal dovetail groove extending entirely through it. The central part of this casting 16 is cut away at 17 to lighten it and afford more ready access to the interior parts.

In the dovetail groove of the casting 16 are two dovetail sliding heads 18 and 19, in which are fitted the cutting-dies or punches 20 and 21, the stationary dies 22 and 23 being removably secured to the inner ends of the sliding heads and spaces 2 1 25 being left in the rear of the stationary dies and in front of the punches to receive the sides 26 27 of the boxlid, as shown in Figs. 2 and 4:. The-punches are normally held withdrawn by springs 28 29, coiled around them, having their front ends bearing against the sliding heads and their rear ends bearing against pins 30 31, projecting downward from the punches. The punches are impelled forward simultaneously by means of a treadle 32, pivotally mounted on a cross-rod 33, connecting the rear legs 13 and 15, and connected, by means of rods 34 and 35, pivotally secured to a lug 36 on the treadle, to a horizontal bar 37, mounted to slide vertically in guides 37 on the head 16, the rods 34: and being pivotally connected at their upper ends in lugs 38, depending from said bar. Elbow-levers 39 and 40, pivoted in recesses in the under side of heads 18 and 19', have their upper arms bearing behind the pins 30 31 and at the ends of their lower arms carry pins or rollers 41 42, which engage under the bar 37. By means of the construc tions described the sliding heads may be adj usted to any desired positions in the dovetail groove of head 16 and will carry the elbow-levers with them, and no matter Where they are located the rollers 41 42 will always bear under bar 37, and the operation of the treadle will cause the punches to move forward into the stationary dies without regard to the adjustment. The sliding heads are secured at any desired adjustment by means of hand-screws l3 etlpvhich are threaded through the sliding heads and engage the bottom of the dovetail groove.

The table is composed of two sections and a6, held at a sufiicient distance apart by cross-irons 47 to permit the sliding heads to project through the space between them, the irons I? being provided with lugs 48 to receive screws to fasten them to the table and with parallel depending fingers l9, straddling clamp-screws 50, threaded into the head 16 between vertical guide-ribs 51. \Vhen the table is in place, the fingers 49 are in contact with the guide-ribs 51 and rest upon a horizontal bar 52, mounted pivotally upon the upper ends of parallel bars 53 54,pivotal1y connected at their lower ends to the frame of the machine. A spring 55 connects the bar 52 with the head 16, with a normal tendency to force it to the right against a bar-stop 56, projecting from the leg-frame in its path, and provided with a set-screw 57, by means of which the bar 52 maybe adjusted to the left to raise its level. In raising, the bar 52 maintains its level and carries up the fingers 49 and with them both ends of the table at the same time, thus preventing endwise tipping of the table, while the contact of the fingers 49 with guide-ribs 51, maintained by clampscrews 50, prevents tipping front or back, thus securing an absolutely true and level adjustment of the height of the table by means of the single set-screw 57.

The sliding heads 18 and 1.9 are cutaway at each side of their face ends to afford rabbets 58, in which to fit arms 59, depending from the stationary dies 22 23, said dies being secured by screws and the punches by removable hearing-plates 61.

In the machine proper, as illustrated in detail in Figs. 2 and 5, the cutting-dies or punches 20 21 are cylindrical, with beveled forward end, and the stationary dies are of corresponding form; but the contour of the dies may be variedas, for instance, in Figs. 6 and 7, in which the punch is substantially semicylindrical, with lateral flanges 62 hearing on the upper face of the sliding head. Any other shapes of dies may be substituted and many slight changes or variations made in the details of construction of the various parts without departing from the spirit and scope of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-- 1. In a machine for cutting thumb-holes in the lids of paper boxes, the combination of a casting or head having a longitudinal groove, a pair of slidable heads in said groove, means for locking said heads at any adjustment, a punch and stationary die carried by each head, a treadle, and connections between the punches and the treadle whereby the punches are operated in any adjustment by the depression of the treadle, substantially as described.

2. In a machine for cutting thumb-holes in the lids of paper boxes, the combination of a casting or head having a longitudinal groove, a pair of slidable heads in said groove, means for locking said heads at any adjustment, a punch and stationary die carried by each head, a treadle,anIelbow-lever for each punch having its upper arm in engagement therewith and its lower arm provided with a laterally-projecting pin or roller, a horizontal barIresting on said pins or rollers and guided in grooves in the frame, and a treadle connected with said horizontal bar, substantially as described.

3. In a machine for cutting thumb-holes in the lids of paper boxes, the combination of a casting or head having a longitudinal groove, slidable heads therein, hand-screws for securing the slidable heads in any adjustment, stationary dies fixed on the slidable heads, punches slidably mounted in said heads, springs for retracting said punches, pins depending from the punches, elbow-levers pivoted to the sliding heads having their upper arms engaging behind said pins and their lower ends provided with laterally-projecting pins or rollers, a vertically-slidable horizontal bar resting on said pins or rollers, a treadle, and rods connecting the treadle with the horizontal bar, substantially as described.

4. In a machine for cutting thumb-holes in the lids of paper boxes, the combination of a frame, a pair of parallel bars pivoted thereto, a horizontal arm pivotally connected to the upper ends of said bars, a table resting on said arm, a spring for drawing the arm laterally in one direction, a stop for the arm, and a set-screw threaded through the stop and bearing against the end of the arm to move it in the opposite direction against the action of the spring, the movement of the arm by the spring and set-screw causing the table to be raised and lowered, substantially as described.

5. In a machine for cutting thumb-holes in the lids of paper boxes, the combination of a frame provided with parallel vertical guide ribs at each end, a table in two sections, crossirons secured to the table, parallel fingers depending from the cross-irons in contact with the guide-ribs, a clamping-screw passing between the parallel fingers and guide-ribs into the frame, and a vertically-adjustable horizontal arm supporting the parallel fingers, substantially as described.

6. In a machine for cutting thumb-holes in the lids of paper boxes, the combination of a frame provided with parallel vertical guide ribs at each end, a table in two sections, crossirons secured to the table, parallel fingers depending from said cross-irons in contact with the guide-ribs, a clamping-screw passing between the parallel fingers and guide-ribs into the frame, a pair of parallel bars pivoted to the frame, a horizontal arm pivoted to the upper ends of said bars, a spring tending to draw the arm in one direction, a stop against the action of the spring, and a set-screw threaded through the stop and bearing against the end of the horizontal arm, substantially as described.

7. In a machine for cutting thumb-holes in the lids of paper boxes, the combination of a slidable head provided with ways or bearings, a punch or cutting-die located in said Ways, a projecting end on the head leaving rabbets at the sides thereof, a stationary but removable die provided with depending sides located in said rabbets, screws securing the removable dies, and a removable bearing-plate for securing the punch inits bearing, substantially as described.

8. In a machine for cutting thumb-holes inr the lids of paper boxes, the combination of a CHARLES BECK, JR.

Witnesses:

R0121. KEATING, J12, LEONIDAS BECK.

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