US926170A - Metal-heading machine. - Google Patents

Description

' A. O. CAMPBELL.

v METAL HEADING MACHINE.- APPLIUATION FILED JAN.10, 190s.

Patented June 29, 1909.

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5 a M r M A. G. CAMPBELL.

METAL HBADIKG MACHINE.

APPLICATION FILED JAN. 10, 1908.

Patented June 29, 1909.

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. A. 0. CAMPBELL. METAL READING MACHINE. APPLICATION FILED JAN. 10, 1908.

Patented June 29, 1909.

6 SHEETS-SHEET 3- A. U. CAMPBELL.

METAL HEADING MACHINE. APPLIOATIION FILED JAN.10,1908. 92 ,170, A Patented June 29, 1909.

6 SHEETS-SHEET 4.

A. U. CAMPBELL.

METAL HEADING MACHINE.

APPLICATION FILED JAN.10,1908.

926,170. Patented June 29, 1909.

6SHEETS-SHEET 5.

e g h 233 A. G. CAMPBELL. METAL READING MAGHINE.

APPLICATION IILED JAN. 10, 1908. 926, 1 '70. Patented June 29, 1909.

6 SHEETS-:SHEET 6.

aura- W W-s m M UNITED sTATEs PATENT onruon.

ANDREW C. CAMPBELL, OF WATE RB URY, CONNECTICUT, ASSIGNOR TO THE E. I. MAN- VILLE MACHINE COMPANY, OF WATERBURY, CONNECTICUT, A CORPORATION OF CONNECTICUT.

METAL-HEADING MACHINE.

Specification of Letters Patent,

Patented June 29, 1909.

i i Application filed January 1!), 1908. Serial No. 410,194.

To all whom it may concern:

Be it known that 1, ANDREW C. CAMPBELL, a citizen of the United States, residing at Waterburv, in the county of New Haven and State of Connecticut, have invented a new and useful Metal-Heading Machine, of which the following is a specification.

This invention relates to a machine known as adirect acting multiple stroke open die header, and which is provided for heading bolt, screw or other blanks that are longer than can be successfully headed in a solid die machine and that require more than one stroke for expanding the metal sufficiently to produce the desired head. In this type of machine a continuous length of wire is fed by grooved rolls, operated at proper intervals by a crank actuated ratchet and pawl mechanism, through ordinary square dies of suitable size .and length against a swinging stop. After the wire has been fed against the stop" the dies are forced sidewise so as to sever the wire and carry the blank thus produced into line with punches held by a carrier which is raised and lowered at the proper time on the end of the gate which is reciprocatedby a crank. The dies are forced sidewise and ueezed together so as to strongly grip the b nk by a toggle mechanism that is actuated b a lever and cam. The exposed end of the bfhnk is operated upon by one punch for the pur ose of conin -or gathering the stock centra y, and the-n lby the other punch for "linishing'the head to the required shape; As the second punch recedes the grip is releasedand the dies loosely holding the blank re' turned sidewise intoline with the feed so that the len th of wire next fed ejects the piece which as been headed. After the first blank is ejected and before the feeding is completed the stop swings into line and de-- termines the length of wire fed, and conse- .quentlythe exactamount of metal which compressed into the head of the to be practicable,.that is, a commercial suecess, the strong and powerful mechanisms must be so designed and combined as to be durable and perm-it of rapid and exact action.

The object of this invention is to produce a strong, powerful, durable, rapid and convenient heading machine which can be conveniently and accurately adjusted, which will feed the exact amount of stock, which feed can be started. and stopped when desired, but in such manner that this cannot be done at the-Wrong time so as to cause damage to the parts. or the production of short blanks, and which will release the powerful mechanisms in case of improper feeding or jamming of the wire, or accidental introduction between the dies of arts of foreign matter, and will automatica y stop the feeding in case of any such irregular feeding or jamming, and thus prevent the parts from becoming broken, strained or in'ured.

Figure 1 o the accompanying drawings shows a plan of a machine which embodies this invention. Fig. 2 shows an elevation of the side of the machine upon which are the operating mechanisms for feeding the wire and moving and clamping the dies. Fig. 3 'shows. a transverse section of the bed on the plane indicated by the dotted line 33 on Fig; 1. Fig. 4 shows a plan of a portion of the bed which is shown in Pig. 3 with the dies and die holder removed. big. 5 shows a central, vertic -1 longitudinal section of the machine. FigJG shows'a plan on larger scale of a portion. of the toggle actuating mechan- 7 ism. Fig. 7 shows a side elevation of the same. I I 1 g..8'shows a plan of a portion the bed withthe die holding cover moved back-.

wardly so to. expose the dies and die b'locks on,the bed.- Fig. 9 shows a plan of the toggle,mechanism.- Fig. 10 shows a side been acted upon by the seoondpunch, andiis Fig.

ready to be ejected from the machine.

the.

13 shows a plan of the feed pawl and i shaft will make one rotation to two rotations of the crank shaft, and consequently. the

mechanism by which it is carried into and j out of eilectivc position.

side elevation of the same. the effective position of the feed pawl. 16 shows the connection between the pawl frame and the link by which it oscillated.

Fig.

tied mechanism for operating the pawl lever.

The lly wheel 1 is held on the outer end of the crank shaft .2 between friction collars 3,

which are forced together by wedge keys 4 driven tlnoughi'nortisesin the shaft. (Fig.1.) This connection, while holdin; the fly wheel rigid enough to transmit sutlicient power for regular work, will, in case of sudden stopping of the machine, allow the fly wheel to torn between the clamping collars, and thus eve the shock which would otherwise tend to break or injure the machine. This construction also facilitatesthe removal of the wheel when necessary.

One end of. the pitman 5 embraces the crank 6 on the crank shaft, and the op )UFlit end-has a bearing in a joint block 7 poc wted in the horizontally movable gate S. The gatev Fig. 14 shows a 1 fig. shows 1 punches v. ill be reciproeated once in their upper, and once in their 1 wet position to each movement of the feed and dies.

5 ard dies 22 of the rectangular type, with a portion of the opening in each section, and of lengths to suit the blanks to be acted upon.

17 shows a side view of the stop and 1 Fig. 18 shows a on its forward end carries a head 9 which is adjustable sidcwise. this head 1S a punch holder 10, carrying punches 11 and 12.

tion of the crank through the pitman and joint block reciprocates the gate hearing the 1 through the side of the frame by toggles 30.

head with the punch holder and punches to ward and from the dies.

On the lower end of the punch holder is a plate 13 which is-engaged by the arms 14 of a rocker shaft 15 (Pig. 5). This"roclwrshaft has a rocker arm 16 which is enga 'ed by the 2 end of a yoke 17 that is reciprocaled bya slide 35 that is movable back and forth in an cam 15 on the cam shaft it). which is sup- Movahlc vertically in 5 (figs. 1. 5.) The rotai ported by the frame of the machine below the crank shaft. 1, 5.) The reciprocation of this yoke rocks the shaft and oscillates the. arms in such manner that at the Jroper' time. the punch holder is raise: and lowered to bring the. punches alteinar'eir in line with theblank in the dies. he de ails l i of the connections and means-foi adiusiinp' these parts. which reriprocatc and raise end lower the punches, are not described in l'. ll. as they are not es ential to the invention 'latlllli llhjl't'lll.

()1) ther nd of thc crank shaft distant freer the lly uheel. is a pinion 2t) hih Aiii' l"$ with u gear 2] on the endof-the r. in s; (Figs. 1, 1-2.) As the machine sh:

double stroke machine. the pinion u i' are in he rat o of one to two. so that are laid side-by side in a pocket in the end of the frame on a hardened steel plate 23 (Figs. 3, 5, Back of the die blocks to take the heading blows is a plate 24. The wire is fed to the dies through a bushing 5 in the frame (Figs. 5, 8). The dies v. hen. forced sidewise shear oi? the a. ire.

Solid integral sections of the frame form the back, s1des and bottom of the pocket.

shown in Fig. 4- so as to resist both the longitudinal heading blows imparted by the punches, and the transv .rse gripping strains produced by the powerful mechanism which holds the die sections together while the heading takes place.

Over the top of the dies and holding them down securely is a cover 26. The cover has channels in its sides that fit and slide on guides 27, on the side walls of the pocket. (Figs. 1, 3, 5, 8.) When this cover is unfastened it may he slid toward the gate so as to uncover and expose the dies allowing them to be readily removed and changed without requiring the removal of a heavy die block. are plates 260 which confine the dies longitudinally in the recess.

The dies are forced sidewise transversely of the machine for severing the wire and carry ing the blank into line with the punches by the head 28 of plunger-s 29 that are moved Figs. 1, 3 9. The outer to glearms are backed by a plate 31 that is L(l]USt0(l 1n the frame b r a wed e 0.2 the )(iSltlOll of which is h J I e 7 determined bythe serous '53 (Figs. 1, 3, b). '1 he omts of the toggles are arran ed 111 u l v. o blocks 34 v. hich are placed in an 0])(1111lg in a opening in the frame. (Figs. '1, 9.)-

lhe outer end of the slide 35 is hilwed to a l v. a rein such manner as to straighten the toggles and cause the plungcrs to force the uies [.I'ii-HM ersely of the machine. 'Ihe cam 131 depresses the end of the angle lever and i this. through the link, yoke. and slide bends the toggles and thus relieves the lateral ten Stand- A sion on the dies. As the cam shaft makes but one revolution to two revolutions of the crank shaft, the dies by this mechanism are moved sidewise once to each two reciprocations of the punches. r The connection between the yoke 36 and the link 37 is made in such a manner that if the wire is not properly held between the dies, or it becomes jammed or any other matter gets between the dies so that they cannot properly close, the connection will break and relieve the pressure so that the machine will not be damaged. This is accomplished by providing the head of the link 37 with a fork 44 that will thrustagainst a brittle plate 45 placed in the opening in the yoke between the fork and stud 46 screwed into the yoke (Fig. 6). The stud is set up so as to hold the plate firmly against the end of the fork. This ordinarily makes a tight connection between the yoke and the link of sufficient strength to accomplish the required work, but should the dies become jammed so that the toggles cannot yield when the lever forces the yoke forwardly, the ends of the fork will break the plate 45 over the stud 46. When this plate breaks, the connection between the link and yoke is loosened so the lever will oscillate and move the link freely back and forth in the yoke without moving the yoke and imparting any force t=; the toggles.

When transverse pressure on the dies is relieved by bending the toggles, the dies are pushed back to their original position in line with the'feed opening throu h the frame, b a plunger 47 w1th aT shape: head 48, whic is thrust against the side of one of the die sections by a spring 49, that is fastened to the sideof the machine opposite to the side hearing the toggles (Figs. 1, 3, 8). The dies are pushed parallel to their original position, after the ressure is released, by the T shaped head of t e plunger, and thus are not liable to stick and become deranged.

When the dies are returned to position in front of the feed opening and the toggle pressure is relieved, they are spread a art so as to release their rip upon the blan which has been shaped, by the tapered ends of plungers 50 that are forced downwardly through. open-' ings in the sliding cover above the dies by springs 51 that are fastened to the top of the frame. (Figs. 1, 3, 5, 20.)

The wire is fed into the machine by grooved feed rolls'52, which are fastened to shafts 53 that are provided withintermeshing gears 54.

The upper feed roll shaft is supported b.y a yoke 55, which is movable up and down in the frame 56, which supports the lower feed roll shaft and is bolted to the front end of the frame. The upper shaft is forced, downwardly to give ust the ri ht amount of tension between the feed r01 s by a screw 57 on the hand wheel. 58 in a common manner,

frame to the dies.

which is not illustrated in detail as it forms feed roll shaft and is connected by a long rod or link 63 with a crank pin 64, projecting from a block 65 that is adjustably mounted in a groove in the crank disk 66, which is fastened to the pinion on the end of the crank shaft- (Figs. 1, 2). The rotation of the crank shaft through the link oscillates the pawl arni and causes the pawl when it engages the teeth of the ratchet wheel 'to rotate the feeding rolls with anintermittent motion, and feed the wire intermittently through the end of the This causes the wire feed to take lace durin twice in each direction of its arc of motion during the heading of each blank.

' To prevent the wire from being fed twice during the heading of each blank, the pawl is lifted at every other revolution of the crank shaft so that it will not engage the teeth of the ratchet, by -means of the curved face of the lever 67, that extends beneath a roll 72 on the side of the pawl. (Figs. 1, 2, 1 3, 15.) This lever is mounted on a rocker shaft 68 that bears an angle lever 69 which has one end connected by a link 70 with an arm 71 formed. on the lever 38, which is rocked to open and close the toggles and cause the sliding movement of the dies. (Figs. 1, 2.) As the toggle lever is swung downwardly by the cam on the gear, the arm 71 causes the link to rock the angle lever 69 and rocker shaft 68 in such manner that the end of the lever 67 is lowered so that the pawl can engage the ratchet teeth, and cause the rolls to feed the wire. When the toggle lever is swung upwardly and the toggles force the dies sideone-half a revolution of the cran shaft, an coinpels'the pawl to passwise, the link pushes forward the lower end.

of the angle lever 69, and causesthe awl lever to lift sothat it engages the paw roll and prevents the pawl during its next forward movement from engaging the'ratchet teeth. This mechanism allowsthe pawl to engage the ratchet teeth only eve other time it is oscillated. consequently, 0. though the feeding of the wire is-accomplished from the crank shaft during one-half a revolution of that shaft, it takes place during only onequarter of a revolution of the cam shaft, which is the correct time for feedin The angle lever 69 which lifts the pawl ver 67 instead of being connected by the link 70 with the lever 38 may been aged by a cam 103 formed on a block 104 t at is attached directly to the end of the toggle slide 35. g- 2 Cal ' ratchet and cause the rolls Pivoted to the feed roll supporting frame and extending over the roll shafts, within easy reach of the operator, is a handle 73. On the lower ond of the shaft 74, to which this handle is attz'iched, is a lever which has an upwardly extending lug 76 that is normally engaged by the hooked end of a spring latch 77 which is pivoted to the toggle supporting frame i such manner as to prevent the handle from being moved until the latch is unhooked (Figs. 1, 2, 13, 1 1).

The end of the lever that projects from the lower end of the handle shaft, when in normal position extends above the end of an arm of the angle lever 69 on the shaft which carries the lever that is designed to lift the pawl from engagement with the ratchet teeth. When the handle is in the position shown in the drawings, and the lever 75 extends over the end of the lever 69, the pawl lever 67 is raised to such a osition that the pawl when oscillated is h'el above and does not engage the ratchet teeth. The latch 77 carries a screw 79 which is adjusted to be engaged by a stud 80 on the end of the toggle slide, when the toggle slide is at the forward limit of its movement and to push the latch forwardly out of engagement with the lug 76 on the lever 75, so that the handle may be turned 'and the lever moved from above the upper arm of the angle lever (39. (Figs. 13, 14.) \Vhen the .parts are in this relation, the awl lifting lever can drop so that the paw will then engage with the teeth of the to feed. lhis mechanism prevents the handle from being pushed at the wrong time, that is, the handle cannot be pushed for allowing the pawl to engage the feed ratchet until the dies are in the proper position to receive the wire which is fed by the rolls. On the contrary, the handle cannot be moved so that the lever 75 will be swung above the arm of the lever 6 9 to cause the feeding to stop until the arm 1sv depressed and the pawl is lifted during its normal operation. ln other words, the operator cannot throwthe feed pawl out or in except at the proper instant. At all other times during the revolution of the machine the handle is automatically locked against movement.

The link Tllwhich connects the arm of the angle lever 69 that rocks the pawl lever up and down and the angle lever 38 that rec1p rocates the toggle slide is slotted at each end (Figs. L, 7, 14). A pin 81 projects from the lower arm of the lever 69 into a slot in the end of the link, and a spring 82 connected with the lower end of this lever and a pin 83 that projects from the frame beneath the toggles tends to draw the loner end of the lever backwardly so that the pin normally remains in the rear end of the slot in the link. This spring also tends to depress the pawl lifting lever (Figs. 2, 14). The other end of the link 7 O is also slotted and is connected with the arm 71 of the lever 38 by a pin 84 that extends into the slot and aspring 85 arranged .between the pin and a collar 86 on the link. wardly, that is, with the pin, at the lower end of 'the slot. (Figs. 2, 7 The springs. 82 and 85 have such tension that under normal conditions the link, as it 'reciprocates, oscillates the angle lever and raises and lowers 75 the pawl lifting lever 67 at the roper time, as i the link were joined soli ly'with the lever 69 and arm 71.

Iivoted to the under side 'of the yoke 36 that is attached to the end of the toggle slide is a weighted lug '87. A catch 88 connected with the fork 44 in the yoke normally holds this weighted lug lifted, as shown in'full lines in Fig. 7. When the late 45 is broken as the result of any jamming of the machineso that the angle lever will oscillate freely withbut moving the toggle slide, this catch be-- comes disengagedfrom. the weighted lug,

and allows the lug to drop down to the position shown in dotted lines in Fig. 7. When this lug is in this position and the toggle remains stationary, the next upward and rearward movement. of the end of the link 70 as the lever 38 continues to oscillate, brings thew end of the link into engagement with the end; of the lug, and causes the link 'to be forced}- downwardly on the pin 84 which connects it with the lever. W'hen Lhe link is forced' downwardly, the distance between'the end, which is thus connected with the lever, and

the other end, which is connected with the p awl lifting angle lever is increase dsufiiciently so that while the pawl lifting lever will continue to be raisedand lowered by the oscillation of the angle lever 38, the moving path of thepawl lifting lever will be so much above its normal-plane that the pawl will not under any circumstances en age the ratchet teeth and feed the wire. fn other words, if the dies become jammed suiliciently to cause the become broken and release safety plate to feed will be stopped at the the toggle, the same time.

The wire stop arm 89 is mounted on an arbor 90 that extends through thel'ront of the frame. On one portion of the hub of the wire stop arm. are gear teeth 91 engaging with which are teeth 92 on the rack bar 93. (Figs. 3, This rack bar is engaged by a lever 94 which is pivoted to the frame and is oscillated by a cam 95 on thc cam shaft.

(Figs. 1, 5.) This cam is so timed that the wire stop arm is oscillated in front of the opening in the dies, through which the 'wire is fed, just after a finished blank has been ejected. and just before the feeding of the wire for a new blank is completed, in order that the end of the wire strike the stop and the exactamount be fed through the dies for forming the required head. it is desirable This tends to hold the link up- 70 to slide longitudina anism, as well as the the dies.

that the feed rolls shall tend. to feed a little more than enough to advance the required amount of wire, their tension being such on the wire that when the end en ages the sto and the required amount is fed the rolls wi l slip on the wire. By this means the exact amount of wire will be fed each time.

The front: end of the stop arbor asses through a bushing 96, which is three ed in the end of the frame in such manner that by turning the bushing the arbor and stop can be adjusted longitudinally. The bushing 96 also has spiral teeth 97 on the outside of the frame, and engaging with these is a worm 98, on the lower end of a vertical shaft 99, which is supported by the feed roll frame and is provided with a l. Llld wheel 100 above the frame (Figs. 5, 17, 18, 19). By turning this hand wheel, the longitudinal position and consequently the distance of the face'of the stop from the ends of the 'dies can be adjusted with great exactness while the machine is in operation.

If desired the bushing 101 supportin the outer end of the stop arbor QOmay be fitted ly and its position may be determined by a screw 102 for the purpose of adjusting the stop toward and from thefeed opening. (Fig. 21). V

In this machine the feed operating mechri operating mechanism, is on the side o tl fe machine. opposite the fly wheel. This leaves the front corner of the machine on the fly wheel side free of mechanism so the operator can readily see and conveniently reach all iarts around The feed is starte by pushing the handle, which cannot be done except whe11 the parts are in the right relation to feed ablank of proper length, consequently,

. short blanks cannot be fed, nor wilLthe feed occur at such time that the mechanisms will .ofua. hea

become ammed. The gripping mechanism, that is thecam actuated toggles, are substantial and powerful. The frame is-most rigid, and the crank imparts a most powerful and efficient movement to the ate which carries the punches. The form of the frame and the movable cover for the dies obviates the necessity of separate die blocks, and while it insures the frame against springing either under the lateral grip )ing pressure or the longitudinal punching f orce, it permits the dies to be quickly reached for inspection and change if die block. The stop can be quickly adjusted while the machine is in motion, so that the exact amount of metal can be fed through the .dies for reducing a perfect head on the blank, and in case of jamming of the arts or the introduction of foreign matter etween the dies, the gripping pressure is relieved and the feed is stopped.

he dies are returned opposite the feed openmgby a single plunger, but in such manner desired, without the removal actin substantia that they move parallel and without danger of jamming and the are supported so that the blank can be easi y ejected by the feeding in of the next length of wire. The wire stop shaft is firmly supported in solid metal below the dies, very close to the axis of the feed, so that the amount of wire fed will always be the same. The toggles which force the dies sidewise for severing the wire and gripping it, are easily and quickly adjusted, and while the pawl is operati-d'from the crank shaft at each'revolution of the crank, it is not allowed to engage the ratchet wheel for feeding the wire, except at every other revolution of the cran consequently the feed is positive and quick and yet at the proper time.

he invention claimed is:

1. The combination with dies for holding blanks of, means for causing the dies to ri the blanks, such means having a yoke, a or loosely connected with the yoke, an adjustable stud carried by the yoke, and a breakable plate en aging the fork and engaged by the stud for olding the yoke and fork rigid with relation to each other under normal strains, substantially as s )ecified.

2. In a header in combination, a reciproeating a punc 1 carried by the gate, dies for holding the blanks, means for causing the dies to grip the blanks, a lever for operating said means, a connection between said lever and said means, adapted to become released when abnormal resistance is offered to said means, rolls for feeding blanks to the dies, a ratchet and pawl mechanism for operating said rolls, means for actuating the ratchet and pawl mechanism, means for preventing the ratchet and pawl mechanism from operatingthe feed rolls, and means released by the release of the connection between the lever and the die operatin means for bringing into action the means w ich prevents the normal action of the ratchet and pawl mechanism, substantially as specified.

3. In a header in combination, dies for holding the blanks, mechanism forclosin the dies, a connection in saidmechanism which becomes released when abnormal resistance is ofiered to the ClOSlilgjOf the dies, rolls for feeding blanks to the dies, mechanism for operating the rolls, means for preventin the normal action of the roll operating mec anism, a connection between said reventing means and the-mechanism for c osihg the dies, and means adapted to be released by the first mentioned connection when that connection is released by abnormal resistance, to engage the second mentioned connection and to bring into action the means for preventing the roll 0 )erating mechanism from y as s ecified.

4. in a header in com ination, a reciproab s "ate, a punch carried by the gate, dies foi hold ing the blanks, toggles for closing the dies, a lever for operating the toggles, at breakable connection between said lever and the toggles, rolls for feeding blanks to the dies, a ratchet and pawl mechanism for actuating the rolls, a lever arranged to prevent the pawl from engaging the ratchet, means connected with the toggle lever for oscillating the said pawl disengaging lever, and means releaser nection between the toggle lever and the toggles, adapted to engage the connection between the toggle lever and the pawl lever in such manner as to cause the said connection to oscillate the pawl lever in such position that the pawl is prevented from engaging the ratchet, substantially as specified.

5. In a header in combination, a gate, a unch carried by the gate, dies for holding lanks, toggles for causing the dies to grip the blanks, a slide for operating the toggles,

- a lever for o erating the slide, a connection between sai lever and said slide, rolls for feeding blanks to the dies, a ratchet and awl mechanism for intermittently rotatin the feed rolls, means for holding the paw disengaged from the ratchet, a lever arranged to cause saidmeans to hold the pawl out of engagement with the ratchet, a latch arranged to engage said lever, and means 0 erated by the toggle slide for causing t 1e latch to unlock said lever at the proper time, substantially as specified.

6. In a header inirombination, a reciproeating gate, a punch carried by the gate, dies for holding blanks, means for causing the dies to grip the blanks, rolls for feeding blanks to the dies, mechanism for intermittently rotating the rolls, means for preventing the roll feedingmechanism from operating, a latch arranged to prevent said means from operating, said latch being arranged to release said means by the movement of the means which causes the dies to grip. the blank, substantially as specified. A

7. Ina header in combination, a gate, a punch carried by the gate, dies for holding the blanks, toggles for causing the dies to grip the blanks, a slide for operating the toggles, means for actuating the slide, rolls for eedmg blanks to the dies, a ratchet and pawl mechanism for intermittently rotating the feed rolls a lever for reventing the pawl from engaging the rate et, an arm adapted to rock said lever into a plane which will prevent the pawl from engaging theratchet, a

lever adapted to engage said armand revent it from moving, a latch normally olding said lever, a handle adapted to move said by the breaking of the conlever when the latch is released, and means carried by the toggle slide for causing the latch to release tlmlr-ver so that by means of the handle the lover may be moved into position to hold the pawl lever-in the desired plane for preventing feeding, or for causing feeding by the feed rolls, substantially as specified.

8. In a header in combination, areriproeating gate, means for reciprocating the gate, a frame supporting the gate and said actuating means, said frame having a recess 1n the end opposite the gate, which recess has integral end, side and bottom \\'alls,'dies for holding blanks located in said recess, a cover for the dies movable longitudinally in the recess, plates attached to andmovable with the cover for holding the dies, means for feeding blanks to the dies, and means for causing the dies to grip the blanks and move them sidewise, substantially as specific d.

9. In a header in combination, a recipro eating gate, means for reciprocating the gate,

gral end, side and bottom walls, dies movable in said recess, means for causing the dics to grip the blanks and move them sidewise, a cover movable above the dies, toward and from the gate for holding the dies in position for releasing them so that they may be removed from the recess, and means for feeding blanks to the dies, substantiallyas specified.

10. In a header in combination, a supporting frame having a recess with integralend, side and bottom walls, a cover forsaid recess movable longitudinally in the frame, dies located in said recess and held by said integral walls and movable cover, and means for moving the dies laterally in said recess beneath the cover, substantially as spe'cified.-

11. In a header in combination, a gate, a punch carried by the gate, dies for holding lanks, means for causing thedies to grip the blanks, rolls for feeding blanks' to the dies, a ratchet and pawl 'mechanism'for intermittently rotating the feed rolls, means for holding the' pawl disengaged from the ratchet, means for locking the pawl disengaging means, and means operated by the r" l moving means for unlocking the means which

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