US1202175A - Punch-press. - Google Patents

Description

H. K. FOOTE.

PUNCH PRESS.

APPLICATION FILED OCT. 13. 1915.

Patented Oct. 24, 1916.

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AT flNEY H. K. FOOTE.

PUNCH PRESS.

APPLICATION FILED OCT. 13. 1915.

1,202,175. Patented Oct. 24,1916.

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UNITED STATES HAYNES FOOTE, or CHICAGO HErGH'rsiLLmoIs.

V PUNCH-PRESS.

Specification of Letters Patent.

Application filedOctober 13, 1915. Serial No. 55,737.

To all whom it mag concern: i

citizen of the United States,'residing at C-hi-; f cago Heights, Cook county, Illinois, have I invented new and useful Improvements in i from the end of the'beamg, and heretofore,

Be it known that I, HAYNES K. FoTE,-a

Punch-Presses, of which the following is a specification.

My invention relates to an attachment for I -punch presses, adapted to a' variety of uses,

trate my invention, discloses the attachment arranged to punch I-beams, T-beams, chanand the one which I have selected to illusnel and angle irons.

The primary object attained is" economy in labor and tune consumed in operating on the work, and inithe space occupied by the 1' work, whereby an operator is enabled to perform a greater amount of work than here tofore, with less expenditure of time and strength, and without necessitating a large amount of storage space forthe partlally completed work.

through the machine.

My invention enables the operator to complete the work of punching structural iron of the above-named forms, at one pass Heretofore, in punching I-beams, for example, the machine was first set up. that is, the punches and dies were properly adjusted to punch holes in one flange of the beam, 5

after which the beams were lifted to posi- 131011 one by one, and passed through the machine, one flange punched, and the beams T taken off the machine and piled.

After all the beams had had one of their flanges punched, they were again placed one by one on the machine, run through a second time to punch the remaining flange, and again piled} The operator then reset the machine were again placed on the machine one by Y to punch the webs, after whichthe beams one, passed through, punched, and lifted off i for the last time when they were ready for 1 use. Thus there were three lifting on operations, and three liftingoff operations, be-

'sides the necessity for providing space in T set up but once to. vpunch holes in" both 7 which to pile-the partially completed beams, twice. Also, it will be noted that it required three passes through the machine to'punch holesin both flanges, and the web. V By the use of my invention, the machine is I -fianges and in thefl-websimultaneously, all holes-being-punched during one pass-through the machine, so that the beam, after passing through the mach ne 'a single t1me,is;ready for use and may be at once removed. f

PatentedOct. 24, 1916,

The points at which the 'holes'areto be punched inthe beam are gaged or located under the old method, when holes, were punched in one flange at a time, if the end 'was not square,;the holes in one flange" would not'be located in proper relation to those in the other'flange, unless the operator took particular pains and consumed considfIn my invention where the holes are punched simultaneously in both. flanges, they 'mustrnecessarily be in proper relation to each other regardless of whether the ends were heretofore necessary, as well as saving the time then necessary to pass thework through the machine "for the secondand third operations,

'T-irons can be T-iron hadrto'be run through the machine twicewith. a resetting of themachine be tween the two passes. Thus my invention 'saves three handlings'fof material and one i settingof the machine. Likew se, a slmilar economy 1s effected in punch ng angle irons,

two of which can be completed at one pass through the mach1ne,;and wlth greater accuracy and less trouble than by the old method of punching one leg at a time.

Under the former.niethod, whenitwas necessary to punch. a number of holes close together, i the material stretched when 7 first passedthrough the machine, thus necessitating a re-adjustment of the work before being i 1 passed through a second ftime, and on such second; run through the Im'achine, the part already punched, stretched with the part punched on the second'operation, which displaced the holes punchedon the fiiSt Operation My inventlon avoids these disadvantages by punchin erable time in' adjusting the beam in the machine for each pass.

V run through the machine "1n pal -rs at one pass, 1n the same manner as an Lbeam, whereas, by the old method,'each 1 l attain-"these-andother objects' by novel if i V galltheholes atone time 'andwith oneadjustment.

'arrangement, and operation of'punches and d1es,'*;and further" advantages pertaining 1a" punchand die arrangement," and the means thereto, will "be more fully disclosed hereinafter. and particularly pointed out in the cl a I In the accompanying drawings, Figure l is a side view of an ordinary punchxpressj' equipped with one embodiment of my inven- Jti'on; Fig 2,.is1 an; enlarged plan view,

partlylin section, showing the horizontal v to operatethe punches. 'Fig. 3 is a sectional *pianview of thesamestructure. Fig. 4 is a detailfperspeetive ofone of theplungers or actuating members. for the horizontal punches;IFig. 5 is, a similar view of one of thecross heads, or punch carriers operated plunger; Fig. 6 is anenlarged side View of myinvention, and Fig.7 is an enlarged fr0ntv1ew,1partly 1n sect on, showing my lnventl onjcombln'ed with the. ordinary Vertical: pimch, and, 1 also illustrating the connection between the punch carriers 1 and their plungers'ordrive "members;

well knowntype, thelow'er jaw 1 of which 3 forms the usual die supporta a vertically freciprocating working. head 2 being fitted Referring to Fig; 1,'-A is aj'puncli press of in the upper overhanging; jaw 3, and operatedin the usual 1 manner (not shown) from the drive gear 4: foot: lever- 5, clutch L hambered holder 7 the. working head .2. I

16, andico'nnections control theIoperation of (as. 6 mans adjustably secured tothe working'head 2 by [headed bolts 81slidalolei'n grooves 9 inthe "head." The lower end of the chamber, in the holder 7, indicated dotted lines 10Yin Figs." 6 and 7, is partially elosedor restricted by the lips,-11, which support theheads 12 0f vertical punch stemsf or posts 13 depending from the holders. Nuts 1 L removably secure jpunches 1 5: tothe lower reduced and thread- .{ed ends of the punch stems," in line with dies 161(Figg7.) mountedin' die holders 17 I ad ustably secured by set screws; 18 indie blocks '19, which inturn may be 'adjustably' secured by fsetsc'rews' 20in a'groovedbed platef2 lwmounted on theqlower jaw or, diev y supportl, of the punch pressa Holesmay be punched in the webs ofLbeaIns, channel ironsfan'd other lo [vertical punch a d earns, .by means; of this nching the ffiangesof .I-

Heretofore,

'beains; for instance, the, beam been fed to the, punches with, its flanges in a horizon tal plane and the wehjinlasvertical plane. The upper horizontal flange wasrfirst passed beneath the ;v vertically operating punches, and punched, after which the beam was turned oyer fto bifiing. the remaining flange uppermost and again (passed; through the .fmachine and punched, and-then, after the *machine had beenreseh-th i vthmu t emasli ae beam was passed 'irtl t me wi h its web in a horizontal position and its flanges ,VQliJlCZtl, -SO' that holes could be punched in thewebf Bymy method,the I-loeam is passed "through the machine but once, andat that time occupies a horizontal position, that is, the web lies in a horizontal plane and the flanges lie vertically. (Fig. 6)

To punch both right and left flanges at a single operation or simultaneously 'Iprovidethe punch press with a pair of opposite'ly locatedpunch and die members, or

fmately Q-shapedin side elevation, Figs. 1 and 6) and have. an upper jaw 27 and. alower jaw 28. As the die blocksare sln ilar in construction, a description of one will suf- Q fice for both. The jaws apPlOach each other quite closely, but: are spaced far enough apart to accommodate webs of various thicknesses, and to permlt the work to be Shifted through thejaws Each die block is prefa erably of sectional construction, as shown more particularly inj Fig. 3, for convenience in manufacture andassembling, thesections being mortised as at 29, andfirmly secured together. by through bolts 30. I

The respectiveinner faces ofthe sections are correspondingly laterally chambered as at 81 (Fig. 3) to form two chambersopenjing at their forward ends into the throat of the die block, Horizontally shiftalole crossheads or punch carriers 32 (Figs. 3 and 5) fit inthe chambers, the outer faces of which cross heads project into the throats and are I provided with vertically extending mortises :83 (Fig. 5). Punch holders 34: adjustable in ,the mortises,; have threaded studs. 35 on which the apertured punch nuts 36. are ,screwedto retainthe headed punches 37 firmly against the studs. v Eachv punch hold er a preferably comprises a square basehavingtwooppositesidesbeveled to fit the mortise .33. Set; screws 38 secure the punch holders inadjusted position. v

Thepunches37 project horizontally from the back of the throat toward the inner faces of the upperand lower jaws 27 and 28, said p jawsbeing provided with vertically extendingnmortises 39 parallelwith and opposite to the mortises 33 in the cross heads or punch carriers. {Die holders 40 whose bases are similar in shape to the punch holders 34,

are adjustably secured inthe mortises39 by set scre'wsfll, and are bored out to form seats for thedies 42, the jaws having open slots 3; Pa a l and c mm n c t g Withth tally against the work.

faces of the die blocks 22 as at 33 (Fig. 2)

to facilitate the insertion and removal of the punch holders 34, such mortise openings being extended as at 33, to accommodate the threaded studs 35. Similarly, the mortises 39 extend through the upper faces of the die blocks to facilitate the insertion and removal of the die holders 40.

Plungers or actuators (Fig. 4) having inclined faces 46 at their lower ends, enter vertical apertures 47 formed in the upper faces of the die blocks 22 directly behind the inner ends of cross-heads 32, and in communication with the rear ends of the chambers 31 containing the crossheads. The tapered faces 46 contact complementary inclines 48 on the rear ends of the cross heads and exert a wedging action thereagainst, to slide the cross heads 32 outwardly and force the punches 37 into the dies 42. ays 49 projecting from opposite sides of the base of each cross head 32 travel in grooves 50 in the die blocks to guide the punches in a true horizontal reciprocation.

The upper ends of the plungers 45 enter slots 51 in the chambered holders 52, which holders are adjustably secured to the working head 2 by bolts 53 passing through flanges 54 of the-holders. The upper ends of the plungers are headed, as at 55 and are slidable in the chambers 52 of the holders 52 from the open ends thereof, (shown in clotted lines, Fig. 6) the heads 55 resting upon the lips 56 (Fig. 7) forming thewalls of the slots 51. Filler pieces 57 having handles 58 are insertible in the holders above the heads of the plungers to form a non-yielding backing therefor. Similar filler pieces 59 (Figs. 6 and 7) are insertible above the heads 12 of the vertical punch stems 13 for a similar purpose. \Vhen it is desired to render any punch 15 or plunger 45 inoperative, it is merely necessary to withdraw the filler piece 57 or 59, the height of the chambers in the holders being substantially equivalent to the operative stroke of the working head 2.

As the working head 2 drops, it drives the plungers 45 downwardly in the apertures 47 in the die blocks 22 and thrusts the inclined faces of such plungers against the complementary inclined faces 48 of the punch carriers 32, to force the punches 37 horizon- The return stroke of the working head draws the plungers or actuators 45 upwardly with it. Inclined grooves 60 (Fig. 4) parallel with and behind the inclined face 46 of each actuator accommodate similarly inclined ways 61 (Fig. 5)

mforrjned on the inner-side walls of the rear brace the actuators, so that as the latter are I withdrawn, the inclination of the ways 61 operates to retract the cross heads 32 and their punches 37 from the dies. The overhanging shoulders 22 (Fig. 7-) of the die blocks cooperate with the ways 49 and grooves 50 to restrain the punch carriers fro-1n rising with the plungers 45. Vertically extending lateral flanges 62 on the plungers or actuators travel in vertical grooves 63 formed in the die blocks to guide the actuators and prevent them from binding. The central section of the die block 22 projects forwardly into the throat to form a vertical stripper 64 to strip the work from the punches. Shoes 67 may be removably secured to the strippers 64 by bolts 68 to provide more or less clearance between the work and the dies.

The operation and method of use of my invention is as follows: To punch both the flanges and the webs of I-beams at one operation, the horizontal punches 37 and the vertical punches 15, as well as the dies 42 and 16 are properly adjusted to punch the required holes in the proper locations, relatively to the work and to each other. The I-beam is then inserted endwise in the machine, the web 65 (Fig. 6) being horizontal and projecting between the upper and lower jaws 27 and 28 of the respective oppositelylocated die blocks 22, which have been ad- 'through the machine. The die blocks 22 are not fastened to the bed plate when punching Lbeams, but are free to slide horizontally.

When the beam has been brought to the point where the first punching is to be made, the plunger head 2 is lowered, which will force the vertical punches 15 through the web 65 and into their dies 16 in the usual manner. At the same time, the actuators 45 move downwardly in the vertical apertures 47 of the die blocks with their inclined faces 46 in contact with the complementary faces 48 of the cross heads or punch carriers32, to thrust the cross heads out of the die blocks until thepunches 37 contact the flanges 66 of the Lbeam. Further pressure of the actuators against the cross-heads, operates to separate or shift the die blocks 22 apart from each other and relatively to the cross heads, until the inner faces of the upper and lower. jaws 27 and 28 of the die blocks c011- tact the inside faces of the flanges 66 of the I-beam, to thereby bring the dies flush against one face of the work and back it against bending, while the punches 37 press against the opposite side of the work. The opposed pressures or pull exerted by the jaws of the opposite die blocks 22 on the placement. tomatic adjustment of the punches and dies to accommodate any variation in the thickness of the work.

flanges 66 hold the beam firmly against dis- This method also effects an au- The plungers or actuators shift with the die blocks in effecting this adjustment, such slight movement being permitted by allowing a clearance in the holdthe next punching operation.

ance was afforded, the burs struck up by .the punches, would cause the beam to stick ers 52 relatively to which the heads 55 shift.

Continued pressure of the actuators, forces the punches 37 through the flanges 66, and substantially simultaneously therewith, the punches 15 pierce the web 65. Raising the working head 2 withdraws the plungers or actuators 45, the first effect of which is to draw the die blocks 22 toward each other until the strippers 64 strike the flanges 66. Further return movement of the plungers t then effects the withdrawal of the punches -87 from the work.

By thus shifting the die blocks toward each other, suflicient clearance is afforded between the dies 42 and flanges 66 to enable the beam to be fed along until in position for If no cleartothe dies. The thickness of the shoes 67 on the strippers regulates the amount of clearance permitted between the work and the dies. The punches 37 are withdrawn behind the vertical plane of the strippers 64 so as to be outof the way.v

The removable filler blocks 57 and 59 enable me to control the operation of the sev- 'eral punches and 87. By removing such 2 descends.

-tion.

filler blocks from above the heads of the - plungers 13 and 45, no pressure is transmitted to the latter when the working head Thus I can operate the cross heads individually or in any combination.

It is obvious that channels, angle and T- irons can be punched on the same die blocks.

s .Obviously, the invention is adapted for all sorts of punching where lateral or horizontal punches can operate, and I have merely selected one of the many embodi- 'ments in which my invention may be incorporated.

Changes other than those referred to, may be made in the form and arrangement of the several parts set forth without departing from the spirit and scope of the inven- What I claim as new, is

1. In a punch press, the combination with a working head; of a die block and die shiftable relatively to the work during a punching operation, to contact the die with the work; a punch carrier and punch shiftably supported in the die block for movement relatively thereto during the punching operation; and means driven by the working head to shift the die block and punch carrier alternately and simultaneously.

2. The combination with a punch press having a vertically-operable working head; of a chambered gage holder connected to the head; a punch-operating means supported in the gage holder; and a filler piece removably entered in the gage holder in contact with the punch-operating means to prevent independent movement of the head relatively to said means.

3. The combination with a punch press having a vertically-operable working head; of a gage holder attached to the head; a

.punch operating means supported in the gage holder, and adapted for lateral movement relatively thereto; a die block; a cross head in the die block engaged by the punchoperating means and movable relatively to the die block in a direction at an angle to the direction of travel of the punch-operating means; dies in the die block; and punches carried by the cross head to cooperate with the dies.

4. The combination with a punch press having a reciprocatory working head; of a punch carrier shiftable in a direction at an angle to the direction of travel of the head; a punch mounted in the carrier; a shiftable die block in which the punch carrier is sup ported; a die mounted in the block; and

means operated by the working head to effect the automatic adjustment of the punch and die relatively to the work; and to drive the punch through the work.

5. The combination with a punch press .having a reciprocatory working head; of die blocks and dies shiftable by the wo king head, in a direction at an angle to the direction of travel thereof, and relatively to the -work, to automatically adjust themselves to the work, during the punching operation;

and punches operated by the working head.

in a direction at an angle to the direction of travel of'the working head, to coact with the dies.

6. The combination with a punch press having a reciprocatory working head; of die blocks shiftable relatively to the work; cross heads mounted in the die blocks and shiftable at an angle to the direction of travel of the head; and means operated by the working head to shift the cross heads,

and die blocks successively.

.7. Thetcombinationwith a punch press having a'reciprocatory working head; of a cross head shiftable in a direction at an angle to the direction of travel of the work-.

ing head; a die block chambered to accommodate the cross-head and means operated by the working head and slidably connected with the cross-head to advance and withdraw;

the latter relatively to the die block.

8.v The combination with a punch press having a r'eclprocatory. working head; of a die block having a throat inclosed by upper cross-head, to cooperate with the dies; and

means operated by the working head to ad vance the cross head toward and retractit from the dles.

9. The combination with a punch press having a reclprocato-ry working head; of at die block having a throat inclose'd 'by upper and lower jaws; dies adj'ustably -mounted "on the inner faces of the jaws, said jaws being slotted to permit the escape of the punchings a cross head supported in the die block and adapted to shift toward and from the jaws; punches adjustably mounted on the outer face of the cross-head, to cooperate with the dies; and means operated by the working head to advance the cross head toward and retract it from the dies.

10; The combination with a punch press having a reciprocatory working head; of a die block having ajaw; a die mounted in said jaw; a cross head shiftably mounted in r the die block to move in a direction at an angle to the direction of travel of the working head; means to guide the cross head, a punch secured to the cross head; and means operated from the working head to drive the punch through and withdraw it; from the'work.

11. The combination with a punch press having areciprocatory working head; of opposed die blocks having throats adapted to accommodate the work; dies on the die blocks; said die blocks being shiftable toward and from each other during a punching operation; cross heads shiftably supported in the die blocks; punches secured to the cross heads; and means'operated by the working head to drive the punches against the work, and to shift the die blocks tocause the dies to contact the work.

12. The combination with a punclr'press having a reoiprocatory working head; of opposed die blocks havingthroats adapted to accommodate the work; dies on the-die blocks; said die blocks being shiftable toward and from each other during a punching operation; cross heads shiftably supported in the die blocks; punches secured to the cross headsfand means operatedby s the working head to shift the dies and punches relatively to the work to clamp the workin place during the punching opera-- tion, andtorelease the work after such oper-z ation toenableit to be fed through the die blocks. a p 13.,The combination with a punch press having a reciprocatory working head; of opposed die blocks having throats adapted to: accommodate the work; dies on the'die blocks; said die blocks being 'shiftable toward and from each other during a punching operation; cross heads shiftably sup-- ported in the die blocks; punches secured to the cross heads; means operated by the working head to drive the punches against.

the work', and to shift the die blocks to cause the dies to contact the work; and I stripperscarried by the die blocks, to en;

able-the disengagement of the punchesand "14. The combination with a punch press having a reciprocatory working head; of a punch carrier shiftable at an angle to the direction of travel of the working head, the carrier having an inclinedface; a plunger' operated by the working head and having a similarly inclined face to advance the punch carrier in one direction; said'plunger having inclined grooves; and similarly'in clined ways on the carrier entered in the grooves to permit said plunger to retract the carrier as the working head returns to normal position. o

15. The combination with a punch press having a reciprocatory working head; of a punch carrier shiftable at an angle to the direction of travelof the working head, the

carrier having an inclined face; a plunger operated by the working head and havinga similarly inclinedface to advance the punch; V

carrierin one direction; said plunger having incllned grooves; similarly inclined vrays on the carrier entered in the grooves top-ermit said plunger to retract the carrier as the working head returns-to normal posi-' tion; and means to guide the punch carrier du'ringits advance and retraction.

16; In a punch press, the combination with a-reciprocatory working head; ofopposed die blocks, upper and lower jaws on each block, spaced apart from each. other,

shiftthe die blocks apart relatively to the i work to bring thediesagainst the work and" fore thepunching takes place. 1

hold the work punches; j v

17.,The method of simultaneously punching the webiand flanges "of structural iron in place, betweenthe dies and work at one pass through the machine, come J prising, pass ng the work between vertical, and opposed horizontal punches, and first,

intforcing-the horizontal punches against the work; secondly, while the-punches still engage the wvork, in separating the die blocks .relativelyto the work to bring the dies against those facesof-the work opposite i thepunches; third, in forcing the punches through the {work; fourthQin shifting. the

,die blocks towardeach other relatively to theworkto free the work from the dies; and

jfifth, in disengaging the punchesfand work 18. The combinationin a punch press hav- 1 ing a reciprocatory working head; of a die block, having a jaw; a cross head shiftably ;moi.1nte d in thegdie bljocln a punch carried by the cross head ;ja d1e carried by the inner o-f face offthe jawineansoperated by the working head to advance the crosshead and punch toward andiretractit from the die,

1 and a stripperxprojecting. toward; the jaw and againstwhich the work contacts on the withdrawal of thei'cross head. 7

1 9. The comb nation'w th a punchpress having reclprocatory working head; of

opposed; die: blocks having throats adapted to accommodate the work; dies mounted in the'die blocks; said dieblocks-being shiftthe rdie blocks; said die blocks being shifta-ble relatively to the work during a punching operation; and punches carried by the dieblocks and operated by the working head its drive stroke, to force the punches against the work and thereby shift the die-, blocks apart relatively to thework, to clamp the work between thepunches and dies, be-

20. The combination with a punch press having: a reciprocatory working head; ,of

. opposed die blocks having throats adapted to accommodate the work; dies mounted in able relatively to the work duringa punch- ;ingfoperation; and punches carried by the die-blocks and operated by theworking head on its drive stroke to force the punches against the work and thereby shift the die blocks apart relatively to the work, to clamp the work between'the,punchesand dies before the punchingitakes'place; and strippers on the die blocks,v adapted to contact the work on the return stroke of the working head, which shifts the die blocks toward each other,'to enable the withdrawal of the punches, and to aiford clearance between the work and the dies to enable the work to be 3- adjusted for the next. operation.

j 1 21. In a punch press, the combination of a *dieblock havingupper and'lower jaws; a Vpunchhcarrier shiftable across the throat. of

the block; dies on the inner faces of the jaws opposite the punch carrier,- the dies located above and below the mouth of the block; and means to'operate the punch carrier.

22. In a punch press, the combination with a Working head; of a die block, having upper and lower jaws, between which is a mouth communicating with the throat of the block; a punch carrier slidably mounted inthe body of the block and shiftable across the throat;punches in the carrier; dies fixed in the inner faces of the jawsopposite the punches, and on opposite sides Of'tll workreceiving mouth ofthe block; and a stripper projecting from the back wall of-the throat toward the mouth. e

1 23'. The combination with a punch press;

of a die block, having upper and lower, Jaws between" which is amouth communicating with the throat of, the block; theupper and lower jaws having grooves formed therein; and die holders adjustably secured in the grooves; dies in the holders; the jaws also 1 having slots connecting wlth the grooves and leading to the outer sides of the jaws to permit the punchings to escape. 1

' 24 The combination with a punch'press; of adie block, having. upper and lower jaws. betweenwhich is a mouth communicating with the throat of the block; the upper and lower aws having grooves formed therein to accommodate the dies, which grooves extend through the respective aws to enable the dies to be placed and removed.

25. The combination with a punch press having a working head; of an actuator driven by thehead; a die block entered by the actuator; a punch carrier slidable in the die block and advanced and retracted the actuator; ways on the punch carrier traveling in grooves in the die block; and, shoulders on the die block overlying the carrier to guide the carrier in a rectilinear direction. i

26. The combination with a punch press having abed plate; and a working head; of

oppositely-located die blocks mounted on the bed plate to slide toward and from each other; the die blocks provided with jaws to vof the die block and working head being at an angle to each other to cooperate with different sides of the work, respectively; and

punching meanstocoact with the die. a 28. In a'punch press, the combination loswith a \vorking'head; and a punch driven thereby in a rectilinear path at an angle to the path of travel of the working head; of a die block with which the punch coacts, and which is adapted to be shifted relatively to the work, by the working head, during a punching operation, and in a direction 00- incident with the travel of the punch.

29. The combination with a punch press havinga working head and a punch carried thereby to act upon one face'of an angular Work piece; of a die block and die shiftable in a rectilinear path during a punching operation, at an angle to the path of the working head to contact another face of the work piece; a punch cooperating with the die; and means to actuate the die block and punch from the working head.

30. In a punch press, the combination with a working head; of a die block and die shii'table relatively to the work during a punching operation, to contact the die with the work; a punch carrier and punch shiftably mounted in the die block for movement relative thereto, during the punching operation; and means driven by the working head on its outward stroke, to operate the punch carrier and die block successively, and on its return stroke to operate the punch carrier and die block simultaneously.

31. In a punch press, the combination with a working head; of a slidably mounted die block having a throat and a jaw to restrict the mouth of the throat; a die on the inner face of the jaw; and a punch carrier and punch shiftably supported in the die block and reciprocatedby the working head across the throat of the die block to coact with the die.

32. In a punch press, the combination with a working head; of a slidably mounted die block having a throat; opposed jaws to restrict the mouth of the throat; dies on the inner faces of the jaws; and a punch carrier and punch shiftably supported in the die block and driven by the working head, back and forth across the throat to coact with the die.

Copies of this patent may be obtained for 33. The combination with a punch press, having a working head; of opposed die blocks; punch carriers mounted therein; the die blocks and punch carriers being assembled for mutual movement relatively to each other; and means driven by the working head to move the punches toward each other and the die blocks away from each other during a punching operation.

84:. The combination with a punch press, having a working head; of opposed die blocks; punch carriers mounted therein; the die blocks and punch carriers being assembled for mutual movement relatively to each other; and means driven by the working head to move the punches toward each other and the die blocks away from each other during a punching operation, and to move the die blocks toward each other as the punches are retracted from the work.

The combination with a punch press having a working head; of opposed die blocks; punch carriers and punches mounted for independent movement in the die blocks; and means operated by the working head to operate the punch carriers against the work relatively to the die blocks, and to subsequently shift the die blocks relatively 'to the work to clamp the work in place.

36. The combination with a punch press having a working head; of opposed die blocks; punch carriers and punches mounted for independent movement in the die blocks; and means driven by the working head and associated with the punch carriers and blocks to operate the punches, and shift the die blocks toward each otherto release the work, as the punches are withdrawn from the work.

37. The combination in a punch press; of a die block carrying a die and shiftable during a punching operation to bring the die into contact with the work and subsequently to disengage the die from the work; and punching means mounted in the die block, the punching means and die b ock being relatively and respectively shiftable.

HAYNES K. FOO'IE.

five cents each, by addressing the Commissioner of Patents. Washington. D. C.

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