US1667184A

US1667184A - Cutting machine

Info

Publication number: US1667184A
Application number: US5880A
Authority: US
Inventors: Milton H Ballard
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1925-01-30
Filing date: 1925-01-30
Publication date: 1928-04-24
Anticipated expiration: 1945-04-24

Description

April 24, 1928.

M. H. BALLARD CUTTING MACHINE 3 SheetsSheet 1 Filed Jan. 30. 1925 M. H. BALLARD CUTTING MACHINE April 24, 1928. 1,667,184

' Filed Jan 50. 1925 3 Sheets-Sheet 2 Apr-i124, 192s. I 1, 67,184

' I M. H. BALLARD CUTTING MACHINE Filed J 1925 Sheets-Shea Patented Apr. 24, 1928.

UNITED STATES PATENT OFFICE.

MILTON H. BALLARD, 013 BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OE PATERSON, NEW JERSEY, CORPORATION .OI'

NEW JERSEY.

Application filed January This invention relates to cutting and punching machines and is herein illustrated as embodied in a machine for performing punching and cutting operations upon the tip of a shoe.

Machines of this type are'arranged with a cutting or punching die supported on the bed of the machine with its sharp edges directed upwardly. The work is laid upon the cutting die in proper position and a presser member or plunger descends to pressthe work against the cutting die. Usually it is found desirable to interpose'a strip of backing paper between the presser member and the work to receive the cutting edges of the die to prevent dulling the same. In order to actuate the presser member, a connecting rod is usually interposed between the presser member and a crank pin or an eccentric on the power-operated shaft. This necessarily involves several bearings so that the machinefrom the beginning Wlll have a certain amount of play which will be emphasized as the machine becomes worn during use. Be-

' cause of this play in the bearings, the limit of movement of the presser member will not be dete'rn'iinedaltogether by the dimensions of the machine but by factors such as the thickness of the material being cut, the hardness of the. backingpaper and the character of the die with respect to the extent of the cutting edges or the number of punching tubes in the die. The machine may be adjusted from time to time so that clean-cutwork under these varying conditions will be produced,but if the character of the work suddenly changes, then the work-contacting surface of the presser member may be thrown ahead of the position which it has been occupying and, by contact with the cutting edgesof the die, dull the die and possibly break it unless provision has been made to guard against this result. The correction of this difficulty has beenefi'ected, as described in Letters Patent of the United States, No. 1,113,910, granted Oct. .13, 1914, upon the application of J. H. Rigby, by arranging such machines so that the presser member-meets rigid stops designed and located in the machine to prevent the overthrowwhich'may result from the conditions just described. On the other hand, itseems essential to the best'result to construct the machine :so that tlieportion of the presser CUTTING MACHINE.-

30, 1925. Serial No. 5,880.

Accordingly,an object of the present invention is to provide an improved machine of this type capable of eflicient work and convenient for use by the operator which will avoid this and other difficulties.

In accordance with a feature of the invention, the illustrated machine is so arranged that adjustment of the work-contacting surface of the presser member may be effected without running the danger of breakage of the die in case of a sudden change in conditions of work and without allowing an improper adjustment of the presser member to throw an excessive strain upon the machine. Accordingly, the adjustable portion of the illustrated presser membet is divided from the main portion upon a plane inclined to the axis of the plunger and adjustment of the position of the workcontacting surface of the presser member is provided by means of a screw which alters the relative position of the two parts. Rigid stops upon the base of the machine and cooperating surfaces upon the adjustable portion of the presser member are arranged with their contacting surfaces in planes parallel to the plane of the division between the adjustable portion and the main portion of the presser member, The result of this arrangement is to retain the beneficial effects of the use of stops so as to counteract accidental overthrow of the presser member and also to insure against damage to the machine by improper adjustment of the Work-contacting surface of the presser member by a careless operator. 7

Other features of the invention relate to improved mechanism for handling a paper backing strip. According to one of these, feed rolls and mounted so that the press evenly upon-the aper across its wi th and therefore draw tiie paper through the machine without-twisting. In the illustrated embodiment a movably mounted feed roll,

geared at its ends to a rigidly mounted feed roll, is supported upon a yoke pivoted upon a support which is also pivoted and is arranged so that the roll is pressed against the other roll in such a manner that it is capable of adjusting movement about an axis at right angles to the axis of the roll. This arrangement allows a self-adjustment of the two ends of the roll to make the pressure perfectly i1nif 1m along the full Width of the roll. Preferably, too, a non-reversing pawl arranged to form a toggle is'provided .to prevent the paper being drawn back and the consequent reverse rotation of the feed rolls.

Still another feature of the invention, re-

lating also to the handling of the paper backing strip, causes the strip to be drawn through the machine smoothly so that there is less tendency to jerky operation and a consequent tearlng of the strip. To this end, as illustrated, the desired intermittent rotation of the feed rolls is effected by a mechanism including a Horton clutch and one section of the clutch is actuated by means of an arrangement for supporting one of the paper adjustable crank from the main shaft of the machine. The use of a one-way clutch, such as the Horton clutch mentioned, causes the acceleration of the feed roll, during its intermittentmovement, to follow a simple harmonic curve, starting at zero and increasing gradually to a maximum. The illustrated adjustable crank, by means of which the extent of movement imparted to the paper strip may be varied as required by the character and size of the die being used, includes an adjustable lever interposed between two parts of the crank, and an adjusting screw for varying the effective length of said lever is arranged with an operating handle near the front of the machine where it is accessible to the operator and may be changed with a minimum of effort.

they are all exactly at equal distances from the edge of the tip and small variations become conspicuous because of the small dimensions involved. Such variations may be causedbyinaccuracies in machining either the die, the die holder or the edge gage and to obviate the necessity of excessive accuracy in these machine operations, another feature of my invention provides anarrangement for quickly and accurately adjusting the relative position ofthe two sides of the edge gage so that it'will con'form to the curvature of the particular die being used. Preferably and as illustrated, the edge gage is supported adjustably for forward and backward movement in a straight line upon a plate and this plate-is depressibly mounted in the ma-' ings, are slots eccentrically formed in cylindrical disks capable of rotation within the support. A screw-driver slot is provided in Y each of these cylindrical disks to enable them to be turned slightly, and set screws are furnishe'd to hold them in adjusted position.

Other features of the invention will become apparent from a consideration of the following specification and claims taken in connection with the accompanying drawings in which:

Fig. 1 is a vertical transverse section through approximately the center of the machine taken from front to back;

Fig. 2ris a side elevation of the machine illustrating in particular the paper feed controlling mechanism;

Fig. 3 is a detail view showing the support for the supply roll of the paper backing strip; Y

Fig. 4: is a detail view illustrating the strip feeding rolls;

Fig. 5 is a fragmentary perspective with parts broken away to show the arrangement for adjusting the edge gage supporting plate; is

rier 14 for a die block 16. Mounted upon this die block are the cutting tubes 18 and a stripper plate 20. The carrier is also provided with resiliently supported edge-su porting members 22 and with a res lient y' supported edge gage 24. An inclined shelf 26 extending out from the front of the machine and supported by means of an adjustable brace 28 provides a support on which,

the die carrier 14 and associated mechanism may he slid forward outside the frame at the will of the operator. A roller 15 is provided on the carrier Mwhich co-operates with a track v27 on the shelf so that this movement may be easily effected by depress- 'ing a treadle attached'to the cord 29 to pull the die forward and'the die moved to an accessible position in order to facilitate the placing of the work upon the die.

ortion 12- upon which there is supported a sliding carlun er is reciprocated'by means of connecting rods ,32 actuated. by eccentrics. 34 carried on a sleeve 36 secured to a power-operated shaft 38. It will be noted that an adjustable pertion 40 of the presser member has a workcontacting face 41 (Fig. 6) and that the por- 44 when'the machine is -considerable rigidity,

F :ing of the dies by makin tions' of the dies a few t tion 40 is slidably attached to the lower end of the presser member 30 by means of coacti g inclined surfaces which may be formed as ribs and grooves as herein illustrated in Figs. land 6. A screw 42 loosely rotatable in an upward projection of the adjustable portion 40 is threaded into the. lower end of presser member 30 to bring the work-contacting surface 41 of the adjustable portion of the presser member into the exact position required by the height of the die and the force necessary to cut through work of the particular thickness being handled.

To prevent overthrow by the presser member due to any looseness ot' the bearings of the operating mechanism, either as originally constructed or as assumed after a period of wear, adjustable stops 44 are providedupon each side of the presser member, which are slidably but rigidly connected to, said presser member and may be adjusted with respect thereto b means of a screw 46. It will be noted rom Fig. 1 that the lower surface of-each of these stopsis inclined in a plane arallel to the lane of the coacting surfaces etween the ad ustable portion 40 and the main portion of the resser member 30. Rigid fixed stops 48, their upper surfaces inclined in planes parallel to the planes of the lower surfaces of the adjustable stops 44, are mounted in the fraine of the machine in a position to coact with and effectively prevent further movement of the presser member when said surfaces are brought into engagement" The lower surface of one of the stops '44 is indicated in Fig. 1 by the line 50, while the upper surface of one of the stops 48 is indicated by the line 52. Because of the parallel relation'of the surface 50 with respect to the coacting surfaces between the adjustable portion 40 and the main portion of the presser member 30, the portion 40, upon which is formed the work-contacting surface 41, maybe adjusted with respect to the presser member. 30 without'alfecting the relative vertical separation of the surfaces 50 and 52. It willbe understood that the screw 46 is useful. primarily, to adjust the stops being set up at the factory and will need to be changed only rarely as after a considerable period of wear on the machine.

The pressure required for clean cutting of the .work in such a machine is very considerable'aiid is very vividly illustrated by the factfthat it is commercial practice in the manufacture of d es, even though these are manufactured with a backing-plate of very to counteract the bendthe central porousandths' of an a-ving 'the work to receive the inch higher than the edge portions when these, are complicated dies Involving extensive cutting edges or a large number of punching tubes, several hundred of Which may be utilized in the manufacture of some such dies; The illustrated machine enables the application of any required pressure and protection of the dies is effected by the stop surfaces 50 and 52 which are so adjusted that, when they art in contact, the distance between the work-contacting surface 41 of the presser member in its lowermost position and the plane o'fthe cutting edges of the die is .005 of an inch. The paper backing commonly employed-has a thickness of the order of magnitude of .018 of an inch, thus allowing the cutting edges of the die to enter the paper .013 of 'an inch and insuring cleancut perforations through the work. If, then,. a change of conditions is met, as, for example, in changing from a die employing a pinking cutter to one which does not have such a cutter or in changing from one die to another of similar appearance, which may, however, require less pressure, or in changing from character to tips of slightly different thickness of firmness, still the cutting edges of the dies will be protected'by the stops against accidental dulling due to overthrow of the presser member. At the same time the operator is enabled to adjust the work-contacting'surface 41 of the presscr'member by means of the screw 42 to apply the pressure required without being able to throw an unnecessarystrain upon the machine in case he desires to secure additional pressure for a relatively large die or for a die in which the tubes have become slightly dulled through long use. The machine is protected by the

stops

44 and 48 whose relative position vertically isnljaintained constant regardless of any changes made in the position of the adjustable portion 40 of the presger member to which the stops 44 are secure In common with most machines of this type a paper backing strip 60 is provided between the work contacting face 41 of the presser member and the upper surface of cutting edges of the dieafter they have passed through thework, and this-strip isdrawn from a supply roll 62 carried on an arbor 64 supported in brackets 66 at therear ofthe machine. To prevent overrunning of the roll, afriction brake 68 (Fig. 3) is provided, which coacts with a flanged wheel 70 mounted-upon the outer end of the arbor '64. It is found convenient in practice to make the arbor 64 only so large as may be required by considerations the punching of tips of one of mechanicalfstrength and then to secure.

uponthe arbor a cylindrical tube '72 having conical members 74 adjustably mounted". at either end'thereof and held in position by set screws 76. It will be noted that the outer surface of each of these conical members is fluted for engagement with the inner periphery of the roll 62 and that by adjusting the conical members 74 the apparatus may be adapted to a wide variety of sizes of supply rolls.

The strip of backing paper led forward from the supply roll 62 passes over a curvedsmooth-surfaced guard plate '80 (Fig. 1) rigidly mounted upon the frame of the machine and then over a plurality of adjustably mounted, curved guard members 82 carried upon a transverse rod 84 at the front of the machine adjacent to the end of the adjustable portion of the presser member. The strip then passes under the work-0on tacting surface 41 of the presser member and between feed rolls 86 and 88. It will be noted that the feed rolls themselvesare fluted or corrugated the better to grip the strip of paper and that they are provided at each end (Fig. i) with gears 90 upon the upper roll meshing with gears 92 ('Fig. 1) upon the lower roll so that the rolls are turned in unison in opposite directions. The lower roll has an axle 89 pivoted in and extending through the side frame members 10'. The -mounting for the upper roll, which is best shown in Figs.1 and 4, is. such that it is resiliently pressed downwardly to grip the paper strip between the two rolls and to this end the upper roll 86 is pivotally mounted in a U-shaped. whifiletree support 94 havingnear its central portion a pivot 96 extending at right angles to the length of the feed rolls.

' This pivot 96 is received in'a sleeve 98 at the the transverse support there are upwardly extendinglugs 106 provided with adjustable center of a transverse support 100 which in turn is secured by set screws 102 upon a cross spindle 104 pivotally mounted'in the side frames 10 of the machine. At each end of studs 108 and springs 110 are interposed between the ends of thesestuds and a crossmember 112 of the frame of the machine, thereby tending to rotate the transverse support 100, so as topress down upon the upper roll 86 and hold it against the pa er strip. Because of the equalizing action of te whifiietree, however, the roll will tend always to assume a position in which the pressures of the two ends thereof are equalized. It will be noted also that, by adjustment of. the studs 108, equalization of the pressures exerted by the springs 110 at the two ends of the transverse support- 100 is allowed.

It is desirable that the-paper passing under the presser member be maintained taut at all times in order that there may be. no possibility of the formation of wrinkles. There is, however, a tendency for the up-anddown movement of the presser member to pull the paper -stri back in a direction opposlte to that to w it i fed by the roll tion of the pawl 116 may conveniently be made adjustable upon its support and a wedge member 118 may be provided to vary its positionso as to secure the desired coaction with the smooth surface of the disk 114, it being noted from Fig. 1 that the pawl lies out of the line of the centers between the spindle 104 and the axle 89-of the a roll 88 so that it forms, in effect, one-half of a toggle and counteracts instantly and absolutelyany tendency of the paper strip to move backward. I

The mechanism for imparting intermittent rotation to the feed rolls is best shown in Fig. 2 and will be seen to consist fundamentally of a one-way clutch geared to one of the feed rolls and an adjustable crank forming a connection between this one-way clutch and the shaft of the machine. As

illustrated the outerhalf 120 of a one-way clutch, which is shown as a'Hortonclutch,

is pivotally connected to a link 122' adjustably fulcrumcd at 1% upon a slotted lever 126 which is pivotally attached to the frame of the machine at 128. The outer half 120 of the clutch comprises a hardened steel ring driven into acover portion and doweled to it. Adjustment of the position of the fulcrum 124 is secured by means ofa screw 130 having an operating handle 132 conveniently positioned at one side of the frame near the front of the machine. Another link 134 is pivotally connected to the other end of the lever 126'and to a crank in the form of a disk 136 secured to the end of the shaft 38. A brake member 138, coacting with the outer surface of the disk 136 and with a stop 139 upon the frame of the machine, is provided the better to control the rotation of the shaft 38 and to tend to prevent overthrow. The inner half 140 of the Horton clutch is provided with gear teeth 142 meshing with a gear 144 secured to the axle 89 of the lower feed roll 88. When it is desired to insert a new strip of paper in the machine, the upper feed roll 86 may be lifted by rotating the spindle 104 in which the upper feed roll is supported by means of a' hand lever 146 mounted on the outside of the machine, and a finger-operated latch 148, pivoted on a side piece 149 rigidly attached to and spaced from the frame may be provided to hold this-operating latch in its depressed position with the rolls separated.

With such an arrangement the connection tion imparted to the feed roll follows in character the movement of the crank disk 136 .on the shaft 138, which will be along a simple harmonic curve starting at zero and increasing gradually to a maximum and then returning to zero in a similar fashion.

Mechanism for adjusting the angular position of the edge gage 24 with respect to the'carrier 14,is shown in Fig. 5, from which it will be seen that the edge gage 24 itself is slidabl mounted upon a supporting plate 150 WhlC1.1S resiliently held away from the support by springs, such as that shown at 152, positioned over studs, such as that shown at 154, while the upward movement of the plate 150 is limited by means of bolts 156. The position of the edge gage plate upon the supporting plate 150-is determined by a screw 158 passing through an elongated slot in said gage plate. Guiding pins 160 are also provided for the depressible, supporting plate 150 and are secured to said platein depending, relation thereto to enter suitable apertures in the carrier 14.

Commonly these apertures have been madeto fit the guide pins 160 in a position determined as accurately as is' feasible by measurement. As heretofore described, however,

it sometimes becomes desirable slightly to adjust the angular position of the gage plate in order that the perforations produced by the machine may be equally spaced along the .p'eriphery'of the piece of work and to this end slotted disks 162 are'rotata'blymounted in the die carrier 14 and are held in adjusted position therein by set screws 164. It will I be noted that the; slots in said disks form, in

conjunction with the sides of the holes in which said disks are located, the guideways for the depending pins 160 and inasmuch as said slots are eccentrically located in the disks, tlieiangular position of the edge gage 24 may be slightly and accurately adjustedbyrotating the disks 162 and the relative position of the two sides of the edge gage may be brought into a position to conform to the-curvature of the particular die being used. To facilitate this operation, screwdriver slots 166 may be provided. The slidable support 170, lllustrated in this figure, may be used to support a vpinking cutter in case such a member isv used and, as illustrated in Fig. 1, for the support of the edge-sup portin members 22.

In t e operation of the'machine the die block 16 will be drawn forward by means of the treadle-operated cord 29 onto the extension shelfv 26 so that the operator is en=-' abled to locate the position of the work on the stripper plate 20 in contact with the edge-gage 24. The die block will then be allowed to slide back into the machine and the machine set in motion by suitable controlling mechanism (not shown) to effect a single rotation of the shaft 38 and cause the presser member 30 to bring its work-contacting surface 41 down against the backing claim as new and desire to secure by Let-.

ters Patent ofthe United States is 1. In a machine of the character described, a cutting die, a presser member adapted to force the work against the die, said presser member having an adjustable portion with a work-contacting surface, and means co-opcrating with the adjustable portion of the presser member to prevent overthrow due to changing conditions or a possible looseness of the operating parts, said means bein constructed and arranged so that it is una ected by adjustments of the position of the adjustable portion of the presser member.

2. In a machine of the character described, a cutting die, a presser member provided with an adjustable work-contacting portion, coacting stops to limit the approach of the presser member and the die, means for adjusting said stops to determine the limit of approach of the presser member to the cutting edges of the die when all the slack resulting from loosely fitting or worn bearings has been taken up, and means for adjusting the work-contacting portion of said presser member with respect to said die.

a 3. A machine of the class described having a support, a plunger movable toward an away from said support, a driving shaft arranged to operate said plunger, means for adjusting the operative face of the plunger with respect to the support, and rigid stops upon the support co-operating with said plunger to prevent overthrow due to any looseness of the parts, said plunger being constructedand arranged to co-o erate with the stops upon the support in suc i a manner that the relative separation between that part of the face of the plunger which coacts with the stops and thestops is not changed during the adjustment of said face with respect to the support.

4. In .a machine of the class described, a support, cutting members carried by said support, a plunger for pressing the work against the cutting members, means for operating said plunger, means for adjusting the operative face'of the plunger to deter- 1 mine the limit of its approach to the cutting members, and rigid stops upon said support co-operating with said adjustable face, the co-operating parts of the adjustable face of the plunger being constructed and arranged so that their distance from the contacting faces of the rigid stops upon the support is stop on the support, the inclination of the coacting faces of the stops being parallel to the inclination of the coacting surfaces between the plunger and its adjustable workcontacting member.

6. In a machine of the class described, a

presser member provided with an adjustable work-contacting 'portion slidably mounted upon an inclined surface of the. presser member, a suppor t,a cutter on said support, a rigid stop on 'said' support adjacent to said cutter, means for adjusting the position of the work-contacting portionof the presser member with respect to said presser member to vary its approach toward the cutter, and a surface upon said workcontacting member inclined with respect to the path of movement of said member and arranged to co-operate with the rigid stop upon the'support, said inclined surface lying.

in a plane'parallel to the plane of thecoacting inclined surfaces between the presser member and its work-contacting portion.

7. In a machine of the class described, a

.support, a cutting member on said support,

rigid stops upon said support, apresser member having an ad ustable work contacting face for forcing the material to be out against the cutter and the support, a backingstrip located between the presser member and the material to be cutcadapted to receive the cutting edge of the cutter, a drive 'ingshaft, a rigid connecting rod between said shaft andpresser member, there being a certain amount of play in the bearings ofsaid rodwhereby the presser member will approach nearer to the cutter whenthin ma.- terial is, being punched and the resistance toits approach is less than when thick material is being punched, rigid stops upon said presser member adapted to cooperate with the rigid stops upon the,support toprevent the too near approach of the presser member to the cutter, ms for adjusting the work member on said plunger, means for adjustingthe approach of the work presser to the edges of the cutter including bearing surfaces inclined to the path of movement of the plunger, rigid stops upon said support adjacent to said cutter having inclined pressure-receiving surfaces parallel to the inclined bearing surfaces of the adjustable work-presser member, and co-operating stops upon the presser member having inclined pressure-transmitting surfaces parallel to the inclined surfaces of the stops upon the support. I a

9. In a machine of the character described, a frame having a support, a'cutter on said support, a plunger, means for operating said plunger, a work-pressing member on said plunger, means for adjusting the approach of the work presser to the edges of the cutter including inclined bearing surfaces, rigid stops upon said support adjacent to said cutter having inclined surfaces parallel to the inclined surfaces of the adjustable work-presser member, co-operating stops upon the-plunger having inclined surfaces parallel to the inclined surfaces of the stops upon the support, and means for adjusting the stops upon means for operating said feed roll to impart a step-'by-step movement thereto comprising I a Horton clutch, and means for controlling the range of to-and-fro movement of one part of said clutch.

11. In a machine of the character described,ja cutter, a presser member for forcing work against said cutter, a backing strip passing between saidpresser and the work,

means for imparting a step-by-step movement'to the backing strip'comprising a feed roll, means for operating said feed roll comprising a Horton clutch, and a crank for operating the Horton clutch'adjustableto reg ulate the stroke of one part of the Horton clutch so that the extent of the, intermittent movement of the backin'g strip may be readily controlled.

scribed, a cutter, a presser for forcing work wither-utter 12. In a machine of the character 'debackingstrip interposed i to the backing strip comprising a pair of between .the presser and the Work, means for imparting movement to the backing strip comprising a feed roll, means engaging an end of'the feed roll to drive it, and a support for said teed roll pivotally mounted on an axis angularly related to the axis of the feed roll constructed and arranged to allow self-adjustment of the roll with respect to the driving means.

13. In a machine of the character described, acutter, a presser member for forcing work against the cutter, a backing strip interposed between the presser and the work, means for imparting an intermittent movement to said backing strip comprising a feed roll, a support pivoted upon an axis substantially parallel to the axis of said feed roll, springs bearing against opposite ends of said support, a whifile-tree support for said feed roll pivotally mounted upon said first support upon an axis angularly related to the axis of the feed roll, and means for varying the tension of said springs to ensure even pressure of the feed roll at its opposite ends.

14. In a machine of the character described, a cutter, a presser member forforcing work against said cutter, a backing strip interposed between said presser member and said work, means for imparting movement coacting feed rolls, intermeshing gears-at each end of said rolls, meansfor supporting one of said rolls comprising a member adjustable about an axis approximately parallel to the axis of the rolls and having a hanger for the roll pivotally mounted upon said adjustable member for movement about an axis approximately at right angles to the axis of the feed rolls.

15. In a machine of the character described, a cutter, a presser member for forcing work against the cutter, a backing strip interposed between the presser and the work, means for-imparting an intermittent movement to said backing strip comprising a feed roll and means for preventing reverse rotation of said feed roll comprising a smoothsurfaced circular member and a pivoted pawl co-operating with said smooth-surfaced member in position so that the end of the pawl isslightly out of the line of the cen ter of the pivot and the center of the smoothsurfaced circular member so that it forms part of a toggle and binds against the surface of the circular member whenever said member tends to rotate in the reverse direction. a

16. In a machine of the class described,

a support, a cutting member on said support, a depressible plate mounted on said support adjacent to said cutting member,'an edge gage adjustably mounted on said plate, and means for individuallyadjusting the opposite ends of said depressible plate thereby to adjust individually the ends of the edge gage.

17. In a machine of the character described, a support, a cutter upon said support, a depressible gage carrying plate mounted above said support adjacent to said cutter, guiding means extending between said plate and said support, and means associated with one of said guiding means for adjusting one endof the plate with respect to the cutter.

18. In a machine of the character described, a support, a cutter on said support, a depressible plate mounted above said support carrying an edge gage for work positioned on said cutter, and an eccentric constructed and arranged adjustably to determine the position of said plate with respect to the cutter,

19. In a machine of the character described, a support, a cutter on'said support, a plate mounted above said support, an edge gage adjustably mounted on said plate for movement toward and away from the cutter in a straight line, and means for adjusting the relative position of the plate with respect to the support whereby the angular position of the work-contacting edge of the gage may be adjusted with respect to the cutter.

'20. In a machine of the character described, a support, a cutter mounted on said support, a depressible plate carrying an edge gage mounted above said support in operative relation to said cutter, guide pins ex tending from opposite ends of the said plate into said support, slotted disks rotatably mounted in said support engaging said guide pins, and means for holding said slotted disks in adjusted position thereby to determine the angular relation of the edge gage with respect to the cutter.

In testimony whereof I have signed my name to this specification.

MILTON I-I. BALLARD.