US1241267A - Metal-punching machine. - Google Patents

Description

L. A. HAWTHORNE. METAL PUNCHING MACHINE.

APPLICATION FILED JULY 10.19x5.

Patented Sept, 25,1912".

5 SHEETS-SHgET l.

IMMUNE WITNESSES ATTORNEY L.- A. HAWTHORNE.

' METAL PUNCHING MACHINE.

APPLICATION FILED JULY 10, I915.

Pat-entedSept. 25, 1917.

L. A. HAWTHORNE. METAL PUNCHlNG MACHINE. APPLICATION FILED JULY 10. 1915.

5 SHEETS-SHEET 3.

WITNE88E$ QM A TTORIVE Y L. A. HAWTHORNE. METAL PUNCHING MACHINE. APPLICATION FILED JULY 10. 1915.

PatentedSept. 25,1917.

5 SHEETS-SHET 4.

I ll 4, a H

WITNESSES i'a" x 04% A TTORIVEY L. A. HAWTHORNE.

METAL PUNCHING MACHINE.

APPLICATION FILED JULY 10. 1915.

1,241,267., Patented Sept. 25,1917.

5 SHEETSSHEET 5.

KMW

vice; and

LOUIS A. HAWTHORNE, OF NEWARK, NEW JERSEY, ASSIGNOR TO STEEL UTILITIES,

INCORPORATED, 'A CORPORATION OF NEW YORK.

METAL-PUNCHING MACHINE.

Specification of Letters Patent.

Patented Sept. 25, 1917.

' Application filed Ju1y10, 1915. Serial No. 39,082.

a citizen of the United States, and resident of Newark, in the county of Essex, State of New Jersey, have invented new and useful Improvements in Metal-Punching Machines, of which the following is a specification. The invention relates to machines for punching structural shapes or like work and more particularly to automatic means and devices for alternately traveling and stopping the work relatively to the punchor other tool equipped meansin successive desired positions to be punched thereby. The objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom.

The invention consists in the novel parts, arrangements, constructions, combinations and improvements herein shown and described.

The accompanying drawings, referred to ier'ein and forming a part hereof, illustrate one embodiment of the invention, and together with the description serve to explain the principles thereof.

0f the drawings:

Figure 1 is a fragmentary plan of a machine constructed in. accordance with the principles of the invention;

Fig. 2 is a transverse vertical section on an enlarged scale, substantially on the line AB of Fig. l;

Fig. 3 is a side elevation, on an enlarged scale, with certain parts in section, substantially on the line C-QD of Fig. 2;

Fig. at is a fragmentary elevation, with parts in section of the distance determining v device, which is shown in plan, in connection with the machine at the lower right hand part of Fig.1; I

Fig. 5 is a fragmentary elevation looking at Fig. 4 from the right;

Fig. 6 is a sect-ion, substantially on line EF of Fig. 4;;

Fig. 7 is a diagrammaticview of a system of wiring for the punch rolls, or other work starting and stopping means to be controlled by the distance determining de- Fig. 8 is a wiring diagram for the elcctro+ magnetically operated work stopping devices. Y

Referring to the embodied form of mechanism illustrated by way of example, in the accompanying drawings, the work to be operated upon is shown as an I beam m, which is progressed longitudinally along a horizontal or substantially horizontal pathway through the machine. The location of the punching mechanism or other tool equipped means is indicated by the housing 1. The form of means for successively traveling and stopping the shape or other work after predetermined distances of travel to position the work relatively to the punch or like tool equipped means, to accurately 'position the various perforations or operations upon the work, comprises devices which frictionally. engage the work, and by the starting and stopping of said devices,

the travel and stopping of the work as desired- 'iseffected inaccurate and predetermined relation to the punches.

In accordance with certain features of the invention, said progressing and stopping means engage the work at opposite sides thereof and by their rotation and stopping serve to respectively feed and position the work. In the embodied form of said means, a series of substantially horizontal arranged rollers 2 are provided suitably mounted in bearings 3 carried upon the frame 4: of the machine, said series of rollers extending at either side of the, tool equipped means for the purpose of supporting the work to, past and away from the tool equipped means.

The distance determining means and cocomprise series of opposed'rolls 5 and 6,

preferably arranged at either side of the tool equipped means 1, said rolls engaging the sides of the work at opposite points and exerting sufficient frictional pressure thereon to accurately control and determine both the amount or length of travel and the stopping point of the work, in conformity to the setting of the distance determining devices. v

The'pairs of rolls 5 and 6 are mounted respectively upon vertically disposed shafts 7 and 8. The shaftS is journaled in fixed bearings 9 and 10 respectively, in the frame of the machine, the bearing 9 being carried by a bracket 11. To adapt themachine for work of different'widths, the rolls 5 of the various pairs, are movable to and from the corresponding rolls 6, although so far as concerns many features of the invention 116 both lens may be movable if desired. A

cordingly the shaft 7 of the roll is journaledin' bracket 12-.- The bracket 12 has horizontally extending arms 13 and has a vertical portion 1 1, and also an inwardly extending portion 15 (back of the part 18 in Fig. 2) for carrying the lower bearing 8 for the roller'5. The bracket 12 has at either side thereof longitudinally extending and projecting wings or tongues '16 and 17 (Fig. 3), which rest upon and slide along. suitable gui deways in the transverse frame member 18. Retaining plates 19'and 2O are bolted over the projections 16 and'l7 to guide and retain thesupporting bracket in its seat.

The various pairs of rolls, and the'rolls of each pair, are moved and stopped together, and mum embodied form of 'such means, each shaft 7 has atits bottom end abeveled gear 120 meshi'ngwith a heveled'pinion21, whichpinion issplinedto rotate with a shaft 22, but is slid-able along said shaft.

Each pinion 21- has a collared bearingiina downward projection 23 from the bracket 12,. whereby the pinionfmoves to and fro with the roll 5 and the 'g'ear120 as they are moved or adjustedin andout for beams or:

work of differentwidths; For the purpose of'driving roll 6"of'each pair, there is fixed to each of the shafts 8. at its bottom endia beveled gear 2e, said gear 24'meshingwitha beveled @pinion 25" fixed to rotate with shaft 22. Each 22, in 'ad ditionto' its bearing in the downward projection 23' of the corresponding, bracket 12, hasa bearing at 26 in a. portion projecting downwardly from the transverse frame member 1 8.-

For the purpose of'driving the rolls 5 and 6, on the end of each'shaft 22 is carried a.

beveledpinion meshing with a pinion 28- upon a shaft 29*. The shaft 29' extends lon-- gitudinally vof-the machine, its various pin ions 28 engaging with the respective pinions 27 to drive each pair'of rolls'5 and6. The

dri ving'of rolls 5 and 6, and their. starting] and stopping, in the present embodiment, are

effected through shaft 29 by means later to be described.- i 3 Means are provided for. simultaneously moving or adjusting the rollers 5 in and out for work of different widths, and 1n the em bodied form of such means, at the right:

hand end of each of the transverse frame piecesls there is'provided a-bearing. 30, in which is journaled a collared sleeve 10 (shown in 'dottedlines in Fig; 2), to which sleeve fixed a worm: wh.eel 31.- The worm wheel or its sleeve is internally threaded to engage with the threadv upon a shaft 32,

which shaftextendsthrough an aperture in the movable bracket 12, the shaft 32 having a square head 33 seated in a recess in the bracket 12., Thus the shaft 32 will not rotate, inthe bracket, but will move the bracket 12 with itlongitudinally, On-the.

right hand side of the-"bracket" 12 in Fig. 2 is shown a spring 34 with lock nuts 35 to regulatethe tension thereof.- Thus the rolls 5 are nicely adjusted for beams of different widths and atthe same time an adjustable or varying spring pressure may be exerted upon the beam or shape both to increase the frictional hold or grip thereon andtocompensate' for any slight variations in the beam if'any such there be.

Meshing with a Worm wheels 31 respectively,,areworms 36; fixed on. shaft 37, which shaft. is journaled I inbrackets 38, carriedupon theen ds. of the. various cross frames .18. Ahandwheel 39, or other suitable device may be used to ro-'- tate theshaft 37,and simultaneously adjust or position the. various rolls: 5 for beams of different width.

In accordance withone feature oftheinvention, electro-magnetic means for controlhng or asslstlng. in controlling the movement or positioning: of the shape or other. -Work areprov1ded. Inaccordance with one feature of the lnvention, the actionof SZLlCl electrormagnetic meansmay be. controlled by. a CllStaHCQIQCOICl sheet, such as is designed to cooperate witlfthecontacts shown inVFig. 7 andas sho'wnalso in application uary 26', 191 1. So-far as concerns certain features of' the invention, the action ofthef electro-magnetic means upon the work may windings of the electromagnetic devices, such control being efiectedfinsaidembodied form from a distance. recorddevice. Furtherinore, in accordance with certain aspects of the invention, the electric devices could be employed withdriven. rolls supporting the work, insteadl of the pinchorv pressure rolls as shown. 1 i

Inthe embodiedform of such means, the electro-inagnets have their respective heads 51 close tothe work and their'windings 52 in circuit with a source of electric energy, such as'a generator 53. A t 5aimthe circuit for each of the windings is aswit ch 55 controlled by azsolenoid 56'. Said solenoid 56 is in circuit with contacts 57 "ancl 58, which means, such as afriction drive comprising Ser. No. 814,380, of'T. P. Payne, filed J p be. by approach to or recession tlierefrom,

In the embodied form, such action is effected by controlling. the current for the a gear loose on shaft 29. A disk 61 is fixed to rotate with shaft 29 but is movable longitudinally thereof. A spring 62 presses termining device is applicable also to other forms of work progressing means than that shown herein.

In accordance with certain features of the invention, the distance determining device comprises a plurality of contacts or circuit closing devices in series with the ultimate or least distance representing device, the simultaneous closing of the various contacts occurring at the set or predetermined distance to energize ultimate distance devices to stop the work. More particularly, in the present embodiment, means are provided for simultaneously closing the desired or selected foot contact and the desired or selected inch con tact simultaneously, to thereby set the se lected or desired siXteenths-of-an-inch solenoid to stop the work at the right point in its travel relatively to the punching mechanism.

As embodied, the distance determining means comprises a member traveling proportionally to the work such as toothed bar 70. Between each of the teeth 71 is a contact representing one footof travel of the work (assuming the machine to be arranged for the foot, inch and fractions system of measuring). These contacts 71 are selectively energized by means of a system of contacts for .the tens and units of feet and circuits therefor arranged in series. v This system will be generally understood from Fig. 7. That is, in the tens of feetif the third contact were closed it would close all circuits for the twenties of feet up to contacts 6 (in Fig. 7) but if only the seventh contact of contacts 6 (representing units of feet) were closed, the only contacts, 71 which would be alive would be those for twenty seven feet, but as they are normally separated no current flows.

The disk 72 is fixed to rotate with shaft 29, making one rotation for each foot of travel of the work, and has a helical ridge 7 3 thereon .of insulating material. The ridge 7 3 successively engages the recesses .between the teeth ofthe rack 70, and has a pitch equal to the distance between two successive or adjacent teeth 71. The helical ridge 73 feeds bar 7 0 along proportionately to the travel of the work, the gap 74 serving to pass the successive teeth 71. The ridge 73 successively closes each set of contacts for each foot, but as they are dead, except the one for the desired reading, there is no result until the desired one is reached. When the live contacts are reached, the ridge 73 keeps the circuit closed at this point for the entire foot, awaiting the energizing of the selected inch contact.

The frame 76 is stationary and provides a bearing for the shaft 29. Arranged about the rear face of frame76 (see Figs. 4 and 5) are a series of contacts 75 representing inches. On shaft 29 is an arm 77 which rotates with the shaft 29 and successively Wipes over andv closes the various inch contacts. These are all dead, however, except the one the circuit for which is closed at the contact C in Fig. 7 by the presence of a perforation in the distance record sheet. When the arm 77 wipes over and closes the contact 75 corresponding to the inch for which the contact C is closed at the keyboard or distance record sheet, the solenoid for the pin 78 corresponding to the sixteenths of -,an inch value of the closed contact as (Z is energized and that pin 78 is projected into slot 80, and permits an additional feed of disk 72 and shaft 29 to allow for the additional siXteenths-of-an-inch required.

In'the inner face of disk 72 (shown in Fig. 6 and being its right hand side in Fig. 4) are a series of arcuate slots 80, and in the frame 76 are mounted a series of solenoids 81, cor

responding to siXteenths-of-an-inch. The various solenoids are set forward on their respective slots to give an additional fraction of a rotation to shaft 29 corresponding to the siXteenths-of-an-inch value of the particular solenoid.

Briefly stated, in the embodied mechanism the circuit is made at the desired foot, the desired inch and the desired sixteenth by the perforations in the distance record strip preparatory to energizing the solenoid of the stop pin 81 corresponding to such desiredsiXteenth-ofan-inch. The circuit is interrupted, however, at the foot contact and at the inch contact. The arm 77 at every rotation thereof closes the inch contact, but the circuit is still open atthe foot contact. The feed of rack 70 proportionate to the travel of the work causes the ridge 73 to close the foot contact, but the inch contact is open until the proper time or point in the desired foot. WVhen the desired inch is reached, the circuit is thus closed at every point in the contacts at the record strip and at the foot and inch contacts of the mechanism and the solenoid 81 is energized and the pin set, thereby stopping the work on the desired sixteenth.

The rack 70 is restored, either manually by lever 90, or automatically from the distance record sheet by the solenoid 91. Lever 9O lifts rack 7 0 clear of ridge 73 and weight 92, a suitable stop being'used to limit the restoring movement of the rack.

. Fig. 7 of the drawings represents a wiring device such as is-shown herein, although far as concerns many features oi" the invention and ofthe distance determinin device, other systems of Wiring may be employed. 5, In the diagram of said Fig. 7; arepresents keyboard contacts fo-rtens'of feet either in a keyboard,or in a distance record sheet or like device, While the group Z) represents contacts for units' ot' feet. The group rep- 1o; resents similar contacts for inches, and the group cZ- represents the contacts for six-- teenths-of-an-inch. 6 denotes a group of solenoids for the siXteenths-of-an-inch stop pins, Which are ofithe proper number in-the 1.5; machine. The group offcontacts f, g, it, and- "2', denote respectively, the footcontacts, on

i The the timer for each ten foot intervals. group marked 74 denotes the inch contacts of the timer disk. m indicates any suitablez'ojsource of electrical energy. I

For the purpose of explanation, let it be assumed that a distance teed-or travel is'tobe made of twelve feet, three and three-six teenth inches On the keyboard, or'by means 2 5 of the perforations on the distance record sheet, the first key or contact in group a, is

closed, the second key or cont-act'in the group Z) is closed,-and likewise the third key or contactin-each' oi groups 0 and (Z are 80.;closed. The current from the sourcem now" passes through the a contact to the group 9; Current also passes through switch or contact Qofgroup g,=which is closed by the timer after twelve feet oi travel, as the read- 85i-ing is in the second tens of feetand then current flows through-g to group-b, then through the closed contact 72 to group 0. The current thenflowsthrough contact 0 and Z0 When k isclosed by'the timer, to

A 4.0group d. d is closed by the'keyboard 'or distance recordfsheet setting and the currentof the invention and ithout sacrificing its chief advantages.

hat I claim as'my invention and desire to secure by Letters Patent is 1. A machine for punching structural shapes including in combination punching mechanism, and means for successively posl- I tioning and stopping the shape relatively to the punching mechanism, said means includ ing stationary devices arranged in series at CllfiQlGl'lt'POllltS- along [the path of travel of the shape, said devices'frictionally engaging'th'e shape to progress it and to stop it in desired positions for punching, and Cl1$ttI1C6-' l cense? determining means con'trollingthe progress" ng and stopping action oi: said frictionally acting devices upon theshape;

2. A machine for punching structural shapes including in combination punching mechanism, means for successively positioning and stopping the shape relatively to the punching mechanism, sa d :means including stationary devices arranged in series at diff ierentpomts along the path ofitra'velof the shape, saiddevices beingalso arranged in pairs at either side'- of theshape'and engage ing it therebetiveen, said devices frictionally engagingthe-"shape-to progress it and to stop it in desired positions for punching,

and distance determiningmeans controlling the progressing and stopping action-of said i'rictionally act-mg'deiuces upon the shape.

A machine for punching structural shapes including in combination punching mechanism, and meansfor successively p0- sitioning and stopping the shape relatively to the punchingmechanism, said means'iin eluding" rotary stoppable devices" frictionally engagingthe' shape and distance de-' termining mechanism controlling said devices to'stop it in predetermined position relatively tojthe punching mechanism. 1

41:. A machine .for' punching structural shapes including in combination punching" mechanism, and means for successively p'ositionmg and'stoppingthe shape relatively to the punching mechanism, sald means inclu'ding driven rotary stoppable I devices" frictionally engaging-the sides of the shape and distance determining mechanism con'-.

trollingsaid devices to stop it in predetermined position relatively to the punching mechanism. A

5. A machine sitioning and stoppinggthe'shape relatively to the punching (mechanism, said means ineluding spring pressed "rotary stoppable devices frictionally engaging the shape to stop it'in predetermined position relatively to thepunching"mechanism, and distance deterinining tion of said devices. A

6. A machine for punching" structural shapes including-in combination punching mechanism, and means for successively positioning and stopping the shape relatively to' the punching mechanism, said means in for punching structural 1 shapes includ ng in combination'punching mechanism, and means for'successively pjo-' mechanism controlling said aceluding driven spring pressed. rotary stoppable devices frictionally" engaging the sides of the shape'to stop it in predetermined position relatively to the punching DIQChELIllSIIlflIlCl distance determining mechanism controlling said a'ctionof'said'devices.

7. A machine for "punching structural shapes including incombintition punching mechanism, and means for successively positioning and stopplng the shape relatively to the punching. mechanism, said means including distance determining mechanism and stationary rotary stoppable devices controlled thereby and frictionally engaging the shape to stop it in predetermined position relatively to the punching mechanism.

8. A machine for punching structural shapes including in combination punching mechanism, and means for successively positioning and stopping the shape relatively to the punching mechanism, said means including distance determining devices and driven stationary rotary stoppable devices frictionally engaging the sides of the shape to stop it in predetermined position relatively to the punching mechanism.

9. A machine for punching structural shapes including in combination punching mechanism, and means for successively positioning and stopping the shape relatively to the punching mechanism, said means including devices located at diflerent points longitudinally, and frictionally engaging the shape, said devices being movable and stoppable together to stop it in predetermined position relatively to the punching mechanism and a distance determining mechanism controlling said action of said devices.

10. A machine for punching structural shapes including in combination punching mechanism, and means for successively positioning and stopping the shape relatively to the punching mechanism, said means including devices located at different points longitudinally, and frictionally engaging the shape, said devices being rotatable and stoppable together to stop it in predetermined position relatively to the punching mechanism and a distance determining mechanism controlling the rotation and stopping of said devices.

11. A machine for punching structural shapes including in combination punching mechanism, and means for successively positioning and stopping the shape relatively to the punching mechanism, said means including a series of supporting rollers, and a plurality of driven devices located at difierent points longitudinally, and frictionally engaging the shape, said devices being stationary but rotatable and stoppable together to stop it in predetermined position relatively to the punching mechanism and a distance determining mechanism controlling the rotation and stopping of said devices.

I 12. A machine for punching structural shapes including in combination punching mechanism, means for successively positioning and stopping the shape relatively to the punching mechanism, said means including a series of supporting rolls, rotary stoppable devices frictionally engaging the shape to stop it in predetermined posltion relatively to the punching mechanism, driving means therefor, and distance determining means governing said driving means and thereby the vstopping and positioning action of said devices, said distance determining means including a distance record device.

13. A machine for punching structural shapes including in combination punching mechanism, means for successively positioning and stopping the shape relatively to the punching mechanism, said means including devices frictionally engaging the shape, said devices being stationary but rotatable and stoppable together to stop it in predetermined position relatively to the punching mechanism and engaging the shape upon opposite sides thereof, a single driving mechanism for said devices, and distance determining means governing said driving mechanism and controllingthereby the stopping and positioning action of said devices, said distance determining means including a distance record device. 1

14. A machine for punching structural shapes including in combination punching mechanism, and means for successively positioning and stopping the shape relatively to the punching mechanism, said means including electro-magnetic devices acting 'magnetically upon the shape to stop it in predetermined position relatively to the punching mechanism.

15. A machine for punching structural shapes including in combination punching mechanism, means for successively positioning and stopping the shape relatively to the punching mechanism, said means including electro-magnetic devices acting magnetically upon the shape to stop it in predetermined position relatively to the punching mechanism and distance determining means controlling the stopping action of said electro-magnetic means.

16. A machine for punching structural shapes including in combination punching mechanism, means for successively positioning and stopping the shape relatively to the punching mechanism, said means including electro-magnetic devices acting magnetically upon the shape to stop it in predetermined position relatively to the punching mechanism and distance determining means controlling the stopping action of said electro-magnetic means, said distance determining means including a distance record device. I

17. A machine for punching structural shapes including in combination punching mechanism, means for successively positioning and stopping the shape relatively to the punching mechanism, said means including electro -magnetic devices acting magnetically upon the shape to stop it in predetermined position relatively to the punching mechanism-and settable distance determining means controlling the stopping action of said ele'ctro-magnetic means.

18. A machine for punching structural shapes including in combination punching mechanism, means for successively positioning andrstopping the shape relatively to the punching mechanism, said meansincluding 'electro-magnetic devices acting 1nagneticallyupon the shape to stop it in predetermined position relatively to-the punching mechanism and automatically operating distance determining means controlling the stopping action of said electro magnetic means.

19. A machine. for punchin structural shapes including in combination punching mechanism, means for. supporting a shape andprogressing it relatively to thepunching mechanism,' and means engaging the shape at its si-deto' permit and prevent its progressionto stop the shape'insuccessive predetermined positions Witlmrespect to the punching mechanism. 7

20. A macl'iine for punching structural shapes including in combination punching mechanism, meansfor supporting a shape and progressing it relativelyto jthepunching mechanism, eomprising neans frictionally engagingithe shape at its side .to permit and' prevent its progression'to stop the shape in I successive predetermined positions with respect to the punching mechanism and a'distance determining devicecontrolling said action of the frictionally engaging means. I

21. A machine for punching structural shapes including in combination punching mechanism, meansfor supporting a shape and progressing itflrelatively to .the punching mechanism, comprising driven means ft'rictionally engaging-the, shape to permit and prevent its progression to stop the shape in successive predetermined positlons with respectto the punching mechanism and dis-v .tance determining means controlling the action ofsaid engaging means.

22. Aunachine for punching structural shapes including in combination punching mechanism, means 'for supportinga shape and progressing itrelatively to the punch ing mechanism, comprising devices .;fric- 'tionally engaging the shape upon .nppo's'ite sides to ,permit and -prevent its progression to stop "the shape'm successive predeter- .n1ined positions With respect to the punch.-

ving mechanism and distance determining means controllingthe action of said engaging means, said'distance determining means lncluding'a distance-record devlce.

'23..A machine for punching structural 'shapes including in combination punching mechanism, means for supporting a shape and progressing 1t. relatively to, the punching mechanism, and comprising means y engaging the shape at its side to permlt and prevent its progressionto stop the-shape 1n successive predetermined positions With respect to the punching mechanism and-settable distance determining means controlling the action of said engagingmeans.

24. A machine for punching structural shapes including in combination punching mechanism, ,means for progressing a; shape together, and means acting automatically to stop saidrolls after predetermined distance of travel oftheshape, said means including a preliminarily prepared distance record device. I

26.]A machine for punching structural shapes including in combination \vorlgprogrossing and stopping means including astationary ele'c'troanagnet acting directly. on

the shape. 7 I

527. A .machine .for punching. structural shapes including in combinationwork progressing andstopping means including ,a stationary -electro-magnet acting to brake the shape and havingthe magnetizing circuit controlled bya distance.record'device.

28. A machine for. punching structural shapes including. in combination Work pro.- gressi-ng and stopping. means including driven rolls for progressing theivorliah'd electro-magnetic braking devices acting directly to stop thework. V

2.9..A machine for punching shapes; including in combination gressing. and stopping means including driven rolls for progressing, the Work. and a stationary electrosm agnet acting directly upon the work to stop it,,a-nd a distance rec- 0nd devicecontrol therefor. l r

.30. A metal punching machine including in combination mea,ns for punching the shape a a zniean .ior successively. pr g ess, 1:, unching means, said 'p eg ingmeans instructural .Work proicluding .a distance determining device comprising, members; having. travel proportional .ues, and. connections through said; traveling members and settable. devices for. stopping the progress of theW-ork.

.31. {A etal p n hing machine includin and stopping. the shape relatively to .the

ice

in combination means for punching the shape and means for successively progressing and stopping the shape relatively to the punching means, said progressing means ineluding, a distance determining device comprising members having travel proportional to the Work and having settable devices representing distance denominations and values controlled by a distance record sheet, and connections through said traveling members and settable devices for stopping the progress of the work.

32. A metal punching machine including in combination means for punching 'the shape and means for successively progressing and stopping the shape relatively to the punching means, said progressing means including a distance determining device comprising members having travel proportional to the work and having settable devices representing distance denominations and values, electrical connections through said traveling members and settable devices for stopping the progress of the work.

33. A metal punching machine including in combination means for punching the shape and means for successively progress ing and stopping the shape relatively to the punching means, said progressing means including a distance determining device comprising members having travel proportional to the work and having settable devices representing distance denominations and values controlled by a distance record sheet, and electrical connections through said traveling members and settable devices for stopping the progress of the work.

34. A machine for punching structural shapes including in combination punching means and means for successively traveling and positioning the shape relatively to the punching means, comprising a pair of driven rolls pressing against the shape and connected to rotate together, driving means therefor, and distance determining means controlling the rotation and stopping of said rolls.

85. A machine for punching structural shapes including in combination punching means and means for successively traveling and positioning the shape relatively to the punching means, comprising a pair of driven rolls pressing against the opposite sides of the shape and connected to rotate together, means for varying the distance between the rolls for shapes of different sizes, driving means therefor, and distance determining means controlling the rotation and stopping of said rolls.

36. A machine for punching structural shapes including in combination punching means and means for successively traveling and positioning the shape relatively to the punching means, comprising a pair of driven rolls pressing against the opposite sides of the shape and connected to rotate together, means for varying the distance between the rolls for shapes of different sizes, means for exerting spring pressure of said rolls against the shape, driving means therefor, and distance determining means controlling the rotation and stopping of said rolls.

87. In a metal working machine tool equipped means, means for successively traveling and stopping the work relatively thereto, said means comprising a plurality of circuit gaps, one at each distance denomination and submultiple thereof, and means for simultaneously closing all of said gaps only at the selected distance.

88. In a metal working machine tool equipped means, means for successively trav eling and stopping the work relatively thereto, said means comprising a plurality of circuit gaps, one for each value in each denomination and submultiple thereof, means for selectively energizing one contact in each denomination and submultiple group for the desired selected value in each, and means for simultaneously closing all of said gaps only at the selected distance.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

LOUIS A. HAWTHORNE.

Witnesses:

Enw. V. WURTS, WILLARD L. HOAGLAND.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of fatents, Washington, D. C.

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