US1906875A - Paper cutting machine - Google Patents

Description

y 2, 1933. J. T. WRIGHT 306,875 PAPER CUTTING MACHINE Filed July 11, 1930 8 Sheets-Sheet l INVENTOR W ATTORNEY:

May 2, '1 933., J T. WRlGHT LQ PAPER CUTTING MACHINE Filed July 11, 1930' 8 Sheets-Sheet 2 1 BY VFW .x. ATTORNEY 8 Sheets-Sheet a J. T. WRIGHT PAPER CUTTING MACHINE Filed July 11, 1930 4 INVENTOR gllllllll/(IIIIII) 7III/III/IIIIMIIIaI/III/I I I. k

J. T. WRIGHT PAPER CUTTING MACHINE Filed Jui 11; 1950 8 Sheets-Sheet 4 INVENTOR ATTORNEYS May 2, 1933. J. T. 'WRIGHT PAPER CUTTING MACHINE 8 Sheets-Shet 5 Filed July 11, 1930 INVENTOH ATTORNEY-5 May 2, 1933. T WRIGHT 1,906,875

PAPER CUTTING MACHINE Filed July 11, 1930 8 Sheets-Sheet 6 V INVENTOR W x ATTORNEY! IHIIIIWI 5 y 2, 1933- J.- T. WRIGHT 1,906,875

PAPER CUTTING MACHINE Filed July 11, 1950 8 Sheets-Sheet 7 May 2, 1933. J wR|GHT 1,906,875

PAPER CUTTING MACHINE Filed July 11, 1930 8 Sheets-Sheet 8 win Patented May 2, 1933 UNITED STATES PATENT oFFicE JOSEPH 'r. .wmen'r, or CINCINNATI, OHIO, ASSIGNOR, BY mnsnn ASSIGNMENTS, 'ro

'rnn EABRIS-SEYIBOLD-POTTER comrm, on CLEVELAND, OHIO, A conrom'rxou Application filed July 11,

ness of paper can be penetrated than by any punching method to cut a clean and perfect .hole. With the expediency of drill recogr nized, the present improvement incorporates the same as an initial step in producing what is known as. 0 en or configurated filing holes. A favora le design of open hole constitutes circularapertures with a slit or stemlike slot cutting across the margin of the paper between the hole and adjacent edge of the sheet. After the round hole is drilled through a stack of sheets, a table supporting the sheets without disturbing their position as arran ed for drilling, is moved horizontally bac the vertical reciprocating stage in which the table is fed or moved for drilling, whereupon the table is moved upwardly bringing the stack of sheets against a stationary cutter having its cutting edge at a lower elevation than the cutting edge of the drill and preferably of V form with the apex portion of the cutting edge coming within the area of the drill hole, the cutter cutting a slot across the margin ofthe sheet, thereby converting the closed to an openl filing hole. The table. stops at the limit of the upstroke for the secj on line.'55,Fig. 3 showing the cam and connections for imparting vertical recipro-K 0nd or lower cutting stage, then drops back enough to clear the cutting edge and moves horizontally forward to be in position to receive a second stackof sheets for'drilling.

An object of the invention is to provide a machine for producing perfect or clean open or configurated filing holes at a margin of sheets of paper, the tools of the machine operating through astack thickness of sheets;

or capacities beyond that feasible under punch press operations.

Another object of the invention is to pro PAEER CUTTING MACHINE ard and to a lower elevation than 1930. Serial No. 467,193.

vide a paper cutting machine with a recip rocating work supporting table for moving and feeding the work toward and from cut- -ting tools and moving the table laterally to the feeding motion for bringi or shifting the work to different ositions or operation by one or the other 0 several cutting tools.

Another object of the invention is to provide a drilling machine for drilling through paper sheets in stack quantities with means operating upon the sheets immediately after a drilling operation for cutting or slitting through the paper margin between the hole or aperture made by drilling and an edge of the sheets to produce an open or configurated filing hole, without disturbing the stack of sheets for the several operations from their gauged position upon a work table.

Another object of the invention is to rovide a new method for producing con gurated'filing holes in sheets of paper in large or stack quantities by drilling around hole throughthe stack and then cuttin vthrough the margin of the sheets between t e drilled hole and the edge of the paper with a-knifeedged tool.

Other objects and advantages will he more fully set forth in the description of the 'accompanying drawings, in which:

Figure 1 is a front elevation of the improved drilling and slotting machine and portion of the machine frame above the table in cross-section.

F 1g. 4 IS a sectlon on line 4-4, Fig. 3.

Fig. 5 is a vertical transverse section taken cation to the table and' its supporting knee and for horizontally reciprocating the table upon the knee. A L

Fig. dis a horizontal section taken on line 6+6, Fig. 4 showing the lever mechanism and devices for horizontally reciprocating'fithe table. The fragments shown in'the plan i l lu'strate a chute or hopper for'rec'eiving the knife or punch cuttings-formed in the upper surface of the knee.

Fig. 7 is an enlarged detail plan view with parts thereof in section of the'mechanism for reciprocating and locking the table at the point connecting with the table.

Fig. 8 is a fragmentary view of a vertical rock shaft and mechanism shown in Fig. 7

Fig. 9 is a detailed section on line 9 9, Fig. 3 showing the slide and lock means for the table gauge.

Fig. 10 is a diagrammatic plan view of the rear portion of the table and top plan view of lever mechanism for horizontally reciprocating the-table illustrating the table in its forward uppermost position when the drills are operating on a stack of sheets disposed upon the table.

Fig. 11 is a detail end view of the lower portion of a headstock and cross-section of a portion of the table in its uppermost position after the drill has cut through the stack of sheets upon the table.

-Fig. 12 is a view similar to Fig. 10 illustrating a step in the operation of the machine with the table elevating to a second height or plane and in a rearmost position when the cutting knives are operatin upon thestack of sheets to open-cut the perforations or apertures in the sheets cut by the drill or previous drilling operation.

Fig. 13 is a view similar to 11 showing a stage in the operation of the machine when the cutter or knife has completed its operation for slitting or cutting the paper with the table at its second plane or elevation.

Fig. 14 is a front elevation of one of the drill eads and Fig. 15 is a side elevation.

Fig. 16 is a section on line 16-16, Fig. 15, illustrating means for horizontally adjustmg the knife relative to the drill or drill spmdle and for locking the same in its ad- Justed position.

Fig. 17 is a perspective view of one of the cutting knives or punching dies.

Fig. 18 is an end view on a knife or its cutting edge.

Fig. 19 illustrates various types of open holes in sheets capable of being made by adjusting the knife to and from the axis of the drill or by chaigingthe-diameter or size of the drill.

Fig. 20 is an enlarged vertical section taken on line 2020, Fig. 2 illustrating the worm and worm wheel drive mechanism for moving the table and the clutch mechanism for transmission control.

Fig. 21 is a vertical transverse section taken on line 21-21, Fig. 20.

Fig. 22 is a fragmentary section on line 22-22, Fig. 1, showing the transmission and clutch control devices with the parts in position for moving the table forwardly upon the knee.

Fig. 23 is a section on line 23.,23, Fig. 22.

Fi 24, 25, and 26 are detailed views respectively showing the clutch control mechadie at nism in three differently set positions, Fig. 24 showing a setting in which the automatic trip mechanism is thrown out adapting the transmission to be governed by a foot treadle; Fig. 25 a setting for automatic clutch control at the end of an operating cycle and Fig. 26 a setting in which the clutch is constantly maintained in action for continuous operation of the machine.

The machine in its organization contains certain characteristics of commercial drilling machines for multiple drilling through a stack of sheets of paper. In such types of machines it is customary to have a table for the work mounted upon a vertical reciprocating knee slidably mounted upon vertical ways of a column for feeding the work toward and from the rotating drills or tools. The drills are carried by spindles, each in a housing or headstock mounted. and horizontally adjustable upon a cross-head or rail at the top of the column. The transmission for rotating the drills and the transmission for elevating the table preferably are driven by a single belt, such form of single belt drive corresponding to that illustrated and described in a prior Patent No. 1,571,153 issued to me January 26, 1926. Likewise a headstock for a drill structure may correspond to that disclosed to a prior pending application filed by me April 29, 1930, Serial No. 448,384 or of other commercial design, therefore, specific detailed description of the single belt drive and headstock mechanism is not made nor included herein.

Referring to the drawings, the'machine comprises a frame 1, which includes a base, vertical column and overhanging or project ing head carrying a cross-rail 2 with which a drill headstock 3 in either. a single or plural number has a dovetailed connection for horizontally adjusting the headstock upon the cross-rail and for rigidly setting or clamping the same in its adjusted position.

Each headstock journals a vertical drill spindle 4, having its lower end provided with a socket to receive and chuck a drill 5. The spindle is rotated by gears housed within the headstock 3 and connecting with a horizontal shaft 6 journalled at its opposite ends within bearings at the opposite ends of the cross-rail 2. The shaft 6 carries a pulley 7 driven by a belt 8 receiving its driving power from a pulley 10 driven from an electric motor or other source of power. The horizontal drive shaft 6 extends through all of the headstocks and is common to all of the spindles for the number with which the machine is provided.

In Fig. 1 of the drawings the machine is shown as provided with a pair of headstocks and drill spindles which areshown in full line occupying a relative position toward the opposite ends of the cross-rail, and in .is provided with vertical ways upon which a dotted line as adjusted more centrally of the cross-rail.

A stationary cutting tool or knife 11 is dependently supported from the lower end of the headstock in the rear of the drill, with its cutting edge at an elevation lower or below the cutting edge of the drill; This relative arrangement of drill and punch provides for first drilling through the stack of sheets at one edge thereof, the stack being fed upwardly as the drill cuts through the sheets with the edge of the stack clearing the stationary cutting tool or knife.

Subsequently after the sheets have been rilled the work table is moved rearwardly without disturbing the stack of sheets, bringing the stack approximately beneath the knife edged tool at a point where the tool will cut through the sheets from the perforation or drilled hole to the rear edge to make what is known as open or configurated hole, sev-' eral designs of cuttings or open hole forms being shown in Fig. 19. The cutting edge of the tool is of V-form which has been found produces the best results and admits the design of slitting'to be varied or changed by merely laterally adjusting the tool or chang-..

ingthe size or diameter of the drill. The apex of the V is directed diametrically toward the drill hole. Also it has been found that the better cutting results can be obtained by having the bevel producing the cutting edge at a forward side to make an absolute perpendicular cut through the stacks with the sheets crowded away from the cutting tool as it advances through the stack.

The shank of the cutting tool is engaged and frictionally clamped within a holder 12, the holder horizontally secured to the lower end of the headstock. As shown in Figs. 14

and 16, the holder has a dovetailed connection with the lower end of the headstock and is micrometrically adjusted by an adjusting screw threaded into the headstock and provided with an annular flange engaging into a groove in a side of'the holder. The holder is locked in its adjusted. position by a wedge 14 operated by a screw 15..

The front side of the column of the frame knee 16 slides and is reciprocated vertically,

the knee slidably supportmg a work table 17 The work table 17 is provided with suitable gauge devices between and against which a stack of sheets is abutted for appropriately locating thesheets relative to drill and stationary cutting tool. The knee is reciprocated vertically tofeed the work or sheets toward the cutting tools and retract the same therefrom and the table is moved horizontally on the knee to bring the top margin of the sheets alternately into and out of cutting position with the stationary cutting tool. The drilling and punching operations preferably take place successively, the knee and table move unitarily, vertically, and the table is moved horizontally by a cam wheel 18 housed within a transmission casing 19, fixed V to the column at the base thereof. The cam wheel has its rear face engaged against the face of a worm wheel and fixed thereto, the

cam and worm wheel rotating as a unit, with the worm wheel journalled upon the stud shaft 20 extending from a bearing 21 integral with the rear wall of the transmission casing (see Fig. 21). The front face of the cam wheel for a part of a revolution recipro- I,

cates the knee to bring andfeed the work against the drill for drilling through the stack of sheets after which the knee and: table are lowered to bring the stack at an elevation below the, stationary cutting tool and feed the work upwardly against said tool a but not to a height which would bring the stack in contact with the drill. Thus the table is reciprocated twice, once for drilling and again for slitting with each revolution of the cam wheel.

The cam wheel 18 operates a pitman 23 vertically slidable within the transmission cas-" threaded upon a nut 27 sustaining the knee,

confined between crosswallsor webs of the knee (see Fig. 4). The nut 27 has a bevel gear 28, formed on its periphery in mesh with a bevel-gear 29 fixed upon the inner end of an end operated shaft 30, journalled in bearings formed in the knee. The'shaft 30 extends forward below the work table toa degree suflicient for convenient access to the operator. The table height or elevation can be thus adjusted with the knee so that it may be reci rocated to relatively different stages from t 0 cutting tools.

The periphery of the cam wheel 18 has an annular groove formed therein, providing a camway 31 having a pair of definitely spaced trlp segments 32-32 arranged therein for actuating a crank arm 33,-fixed upon a lower end of a vertical rock shaft 34. The free end of the crank arm 33 has a pin 35 laterally extending therefrom and en aging into the cam way to be engaged by t e cam or trip se ents, one for moving thearm in one directlon and the second for moving the same in an, opposite direction (as'shown in a hub 36, extended through a bearing bushing 37, extending through and fixed to the toliwall of the transmission casing, and the hu of the crank arm is provided with a r5 collar 38 for retaining the arm against axial 5 a sliding connection for the rock shaft and lever 41, the lever moving as a unit with the knee. The free end of the lever 41 pivotally connects with a link 43 extending forwardly of the knee and the opposite end of the link is pivotally engaged with a crank arm 44 fixed upon the lower end of a vertical rock shaft 45. The rock shaft 45 is journalled in a bearing 46 formed integral with the knee and the upper end of the rock shaft is provided with an eccentric 47 rotative within a bearing socket 48 farmed in the lower side of the rock supporting table 17 Rotation or oscillation of the eccentric by the link and lever mechanism actuated by the cam wheel 18 reciprocates the table 17 horizontally upon the knee. This shifts or moves the table to fore and aft positions as shown in Figs. 10

/ to 13 inclusive, in the forward position for appropriately setting a margin of the stack of sheets for drilling and in the rearward position for cutting or slitting across the margin of the sheets between the drill hole or aperture and the edge of the sheet.

The table along a line beneath the stationary cutting tool is provided with an elongated slot 49 for the reception therethrough of the tool when the table is fed or moved upwardly for drilling. This allows the stationary cutting tool to pass through the table as their lower cutting edges are at eleva tions below the cutting edges of the drill. The table longitudinally adjacent the opening or slot 49 is recessed or grooved to receive a wood or fiber strip 50 used as a knife or drill block with which thecutting edges of the tools engage or are brought against the end of the cut.

The table is locked at the limits-of its fore and aft positions by a spring 51 imparting the final movements to an eccentric connecting with the table. One end of the spring is connected to a pin fixed to the knee and the opposite end of the spring connects with a crank arm 44 preferably at the pivot axis connecting the link 43 and crank arm-44. "The end of the spring connecting with the knee;

is preferably located at a point along a dipositions 0 ametric line with the rock shaft 45 to serve for applyinfg its tension in either fore or aft the table and also serves to impart a final or complete stroke motion to the table actuating mechanism beyond the throws of the cam or after the crank arm is moved to either side of a dead central position of the crank arm 44. As shown in Fig. 7 a crank arm 44 is provided with a lugs 52-52 adapted to alternately engage with a stop pin 53 de ending from a stationary arm 54 horizonta ly extending from the bearing hub 46 of the knee which journals the rock shaft 45, the stop pin 53 limiting the arc of swing of the crank arm for controlling this degree of oscillation.

The spring 51, crank arm 44, and eccentric 47 are arranged relatively to have a dead central position when the horizontal axes of the parts are in a diagrammatic line with the fixed end of the spring 51 so that a movement of the crank arm to either side of such central line will render the spring effective for continuing the movement of the arm with and beyond the positive motion transmitted thereto by the cam wheel 18. The crank arm and eccentric at their opposite limitsof movement are therefore held under the tension of the spring locking the table so that it cannot be disturbed by any pressure brought thereagainst, as by the operator leaning or pushing against the, forward edge of the table when depositing or removing a stack of sheets therefrom.

With a stack of sheets properly gauged upon the table 17 for drilling and punching pair of stop 4 or slitting, a transmission is tripped for rowheelstarts its rotation it will commence to gradually move the knee and table upwardly at'a rate to properly feed the work to the action of the rotating drill for drilling through the stack of sheets. The upper feed of the table continues until all the sheets of the stack have been drilled or until the required depth of the drill has been reached, whereupon the table is retracted or lowered to a second depth to be again elevated for a second stage or operation. After the knee and table have been lowered to a full degree provided by the cam, the table is shifted rearwardly to position the margin of the stack of sheets beneath the punch or cutting tool, whereupon the knee and table are again elevated at an appropriate rate in the second stage for feeding the stack to the stationary cutting tool, stopping with the table at an elevation, and when the limit of feeding motion for the second is reached the table is retracted slightly and moved forwardly and brought to rest ready to be moved upwardly for a successive drilling operation or second cycle.

I uniformity of the work and greater efiiciency in operation.

The transmission mechanismand its control may be substantially of that disclosed in a prior application filed by J. T. Wright and J L T. Rowell, Serial No. 44,704, filed July 20,

1925, although in. the present instance im-' provements have been made thereto to give the machine added facilities. The controlling mechanism can be said to operate substantially as the mechanism is disclosed in aforesaid application, in which the clutch is thrown and held in commission by foot pressure applied upon a treadle and the clutch automatically-thrown out at the end of the cvcle while the treadle is being depressed. Second, the clutch is throvvin in by the treadle, held in commission mechanicallyand automatically cut out at .the end of the cycle. Third, the clutch is thrown in by the treadle and then held in mechanically for continuous operation. Y

The wormjwheel which has the cam wheel 18 fixedto a side face thereof is-in mesh with a worm '56 fixed upon a part of the shaft 57 journalled in the transmission casing 19.

The shaft 57 at one end has a toothed clutch member 58 splined thereon adapted to be thrown into engagement with a second clutch member 59 fixed upon the end' of .a shaft 60 journalled inoa gear box 61 secured to the transmission casing 19 with the shaft 60 co-' axial with the shaft 57. The shaft 60 carries a'gear 62 in mesh,with a gear 63 upon a shaft 64 journalled in the gear box 61. The shaft 64 also carries a pulley 65- driven by the belt 8.

The movable clutch member 58 is actuated' in one direction for throwing the same in the same direction with the second clutch member 59, by an arm 66 pivoted or swinging upon a rock shaft 67 suitably journalled in a casing 68 fixed to and mounted on top of the transmission casing "19. The arm 66 carries a yoke or fork 69 swiveled to the arm and engaged into an annular groove in' the clutch member 58. The clutch throwing arm 66 is also provided with a-paw'l or latch member 70 pivoted upon the arm at one side thereof and the pawl is provided with a butt end for engagement with a shoulder formed by notching into the periphery of a collar 7 fixed to the shaft 67.

The pawl is yieldingly'urged or moved to the 'notch of the collap 71 by a spring 2 and when the pawl isengag'ed with the collar, the clutch throwing arm 66 is coupled or connected with the rock shaft 67 so as to be actuated thereby. As shown in Figs. 24'and 25,

the pawl is in engagement with the collar and the clutch throwing arm has been moved to throw the clutch member 58 into commission for coupling shafts 57 and 60. The pawl at its lower end is provided with a projecting pin 73 extending in the path of a stud 74 fixed to the periphery of the cam wheel 18. Thus in the rotation of the cam wheel when the stud 74 strikes the pin 73 of the pawl, the

pawl-will be thrown out of engagement with the collar 71 releasing the clutch throwing arm 66 from its coupling connection with the shaft 67, whereupon the'arm and clutch member will be moved by a spring 75 connecting with the arm disengaging the movable clutch member 58 from the clutch member 59.

The rock shaft 67 is actuated by a lever or crank arm 76 fixed upon the end of the rock shaft 67 with the free end of the arm 76 connecting with a link or connecting rod 77 extending downwardly toward the base of the machine and connecting with a crank arm or lever 7 8 fixed upon the end of a treadle shaft 79 suitably journalled in bearings extending from the baseof the machine frame. The treadleshaft 79 carries a foot treadle 80. Depressing the foot treadle moves the connecting rod or link 78 upward actuating the crank arm 76 in a direction to swing the clutch throwing arm 66 for throwing the clutch member 58 into commission.

' For one type of control the 'foot pressure must be continuously applied to the treadle to hold the clutch in commission which, however, is automatically tripped and thrown out at the end of.a cycle of the cam wheel by dis engaging the latching connection between the pawl carried bythe clutch throwing arm 66 and the collar71 on the rock shaft 67 of the treadle mechanism.

To provide for holding the clutch in commission after it has been initially thrown in bythe treadle mechanism, a shiftable latch 'member or finger 81 fixed upon a slide rod 82 automatically thrown out through the action of the stud 7 4carried by the cam wheel. The

latch or interlocking connection between the lock finger 81 and the pawl 70 is such as to permit the lock finger to be thrown upwardly when the pawl is tripped by the cam wheel allowing the clutch to be automatically disengaged.

The slide rod 82, provided with a pin 83 for interlocking with one of a plurality of notches 84 formed in a hub 85 extending from .the forward wall of the casing 68 and through which the slide rod 82 is engaged, provides for definitely setting thelock finger 81 into one of three positions. In the first notch for my name.-

holding the locking finger 81 upwardl out of interlocking connection with the paw and in a second notch for brin ing the locking finger 81 into engagement with the pawl 70, and in a third notch for engaging the locking finger 81 with a notch 86 formed in the periphery of a collar or hub 87 fixed to the clutch throwing arm 66 concentric with the rock shaft 67. When the locking finger 81 is engaged with the collar 87 it will hold the clutch throwing arm in a position with the clutch in commission and against the tension of the spring for continuous o eration of the machine and any tripping of t e finger of the pawl would be ineffective toward releasing the clutch throwing arm 66, as the pawl under such conditions would merely swing idly when tripped.

Having describedmy invention, I claim:

1. In a machine of the character disclosed, a columnar frame, a knee extending from and vertically slidable upon said frame, a work supporting table carried by said knee and horizontally slidable thereon, a tool carrying headstock mounted upon said frame overhan ing the table and having a revolving cutting tool and a stationary cutting tool, the

cutting tools having their cutting edges at,

relatively difi'erent elevations, and means for automatically reciprocating said knee and table as a unit in a plurality of stages for presenting the work to and from said tools successively.

2. In a machine of the character disclosed, a columnar frame, a knee extending from and vertically slidable upon said frame, a Work supporting table carried by said knee and horizontally slidable thereon, a tool carrying headstock mounted upon said frame overhanging said table and having a revolving cutting tool and a stationary cutting tool, the cutting tools relatively in fore and aft positions with their cutting edges at relatively different elevations, means for automatically reciprocating said knee and table as a unit in a plurality of stages for presenting the work to and from said tools successively, and means for reciprocating the table upon the knee.

3. In a machine of the character disclosed, a frame, a work supporting table carried by said frame movable horizontally and reciprocable vertically, a tool carrying headstock mounted upon said frame overhanging the.

table and having a revolving cutting tool and a stationary cutting tool, the cutting tools havlng their cutting edges at relatively different elevations, and means for automatically reciprocating said support in relatively different stages for successively presenting zhelwork to and from said respective cutting In witness whereof, I hereunto subscribe JOSEPH T. WRIGHT.

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