US2303005A - Nail heading machine - Google Patents

Description

Nov. 24, 1942. K. E. swANGREN NAIL HEADING MACHINE Filed-Jan. 4, 1941 7 Sheets-Sheet 1 A Kw." 32-11-31 sunk. w A

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Nov, 24, 1942. K. E. swANGREN NAIL HEADING MACHIN Filed Jan. 4, 1941- v sheets-sen 2 Nov. 214, 1942-. K E. SWANGREN NAIL HEADING MACHINE 7 Sheets-Sheet 3 Filed Jan. 4, 1941 H Y, y

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` NAIL HEADING MACHINE 4, 1941 '7 Sheets-Sheet 4 Mar/Myx Nov.` 24, 1942. K E. swANGREN 2,303,005

- NAIL HEADING MACHINE Filed Jan. 4, 1941 v '7 sheets-sheet 5 Maf/26343.'

Nov. 24, 1942. K. E. swANGREN 2,303,005.

NAIL HEADING MACHINE Fild Jan. 4, 1941 'r sheets-sheet 7 Patented Nov. 24, 1942 NAIL HEADING MACHINE Karl E. Swangren, Chicago, Ill., assignor to Albert J. Deniston, Jr., Chicago, lll.

Application January 4, 1941, seal No. 373,195

17 Claims.

This invention relates to a method of applying lead heads to nails and to one form of an apparatus suitable for carrying out that method. It has for one object to provide a method of applying to a nail a head of material softer than the nail and for positioning that head about and beneath the nail. Another Objectis to provide a mechanism for carrying out this method. Another object is to provide a machine of high capacity and one Which is readily adjustable for different sizes of nails.

Other objects will appear from time to time throughout the specification and the claims.

The invention is illustrated more or less diagrammatically in the accompanying drawings, wherein:

Figure 1 is an elevation with parts broken away and parts in section;

Figure 2 is a horizontal section taken on line 2-2 of Figure 1;

' Figure 3 'is an enlarged fragmentary vertical section taken on line 3-3 of Figure 2;

Figure 4- is an enlarged horizontal section taken on line 4--4 of Figure 5;

` Figure 5 is a vertical section, on an enlarged scale, taken on line 5-5 of Figure 2 with parts omitted;`

Figure 6 is a horizontal section taken on line 6 6 of. Figure 5;

Figure '7 is a vertical section, on an enlarged scale, taken on line l-'I of Figure 2;

Figure 8 is a vertical section, on an Venlarged scale, taken on line 8--8 of Figure 2;

Figure 9 is a vertical sectional detail taken on line 8-9 of Figure 8;

Figure 10 is a horizontal sectional detail taken on line III-I0 of Figure 8;

Figure 11 is a vertical section, similar to Figure 8, with parts in different position;

Figure 12 is a horizontal sectional detail taken on line I2-I2 of Figure 7;

Figure 13 is a horizontal sectional detail taken on line I3-I3 of Figure '7;

Figure 14 is a vertical section taken through the die head and punch holder illustrating the forming of the lead head on a nail;

Figure 15 is a fragmentary section similar to Figure 14 with parts in the position which they occupy prior to attaching the lead cup to a nail head;

Figure 16 is an enlarged horizontal sectional detail taken on line I -IS of Figure 14; and

Figure 17 illustrates interchangeable plunger pins for various sizes of nails.

cates a portion of a frame or housing which is apertured as at 2 to receive a pair of bearing sleeves 3, 3 which may be secured to the frame I by suitable securing means 4. Slidably mounted in the bearing sleeves are shafts 5, 5 having reduced end portions 6 adapted to receive a cross head 1. The cross .head may be secured to the shafts 5, 5; forexample, by nuts 8 screwthreaded uponthe reduced portions 6. The shafts 5, 5 and cross head 1 are raised and lowered by any suitable cams and driving means not illustrated in the drawings, since their details form no essential portion of this invention.

Mounted on the lower face of the cross head 'I intermediate the shafts 5, 5-for example, by screws 9-is a circular disc I0 which is apertured as at II in alignment with a bearing sleeve I2 in the cross head I.Vv Rotatably mounted in the bearing sleeve is the reduced portion I4 of a shaft I3 which is itself secured inposition in the cross head 'I by a nut I5 screwthreaded upon the screwthreaded end I6 of the reduced portion I4. A washer I'I and a liber disc I8 are 'A interposed between the nut I5 and the cross head 'I.

Mounted upon enlarged ilanges 20 formed on the shaft' I3 is a dial 2I which carries a plurality of forming dies 22 as illustrated in Figures 4, 5 and 14. The dial 2I is held against rotation with relation to the shaft I3 by a set screw 23; whereas, the forming dies 22 may be pressed into the dial 2|. v

The forming dies are identical with each other, and the description of one will suffice for all. Each formingdie is provided with a cup-shaped cavity 24 in alignment with a bore 25 which communicates with a counterbore 26 of larger diameter.

`Slidablyvmounted in the counterbore 26 and aperture of each forming die 22 is a knockout pin 21, having an lenlarged fluted portionV I3 is in raised position, it is rotated in the di- Like parts are designated by like characters rection of the arrow of Figure 2, one step, to

bring each succeeding die into alignment with the punch 3|. Six dies are shown on the dial 2|. However, this number may be varied. In this case, each time the cross head 1 is raised the shaft I3 and its associated dial 2| are rotated 60 degrees, or one step.

The punch 3| is provided with a forming head 3|a. which penetrates the die cavity 24 when the die is in lower position as shown in Figure 1l. The punch 3| has an enlarged collar 34 and an internally threaded lower portion 35, circular in cross section, which penetrates a corresponding bore 31 in a punch holder 36 which, in turn, is screwthreaded into a bushing 38 supported in the frame The punch 3| is secured to the holder 36 by means of a bolt 39 passing through an aperture 46 in the punch holder 36 and screwthreaded into the portion 35. Rotation of the punch is prevented by means of lugs 4| on the punch holder 36 which penetrate slots 42 in the collar 24 of the punch 3|. The punch 3| may be adjusted in relation to the die 22 by means of the screwthreaded punch holder 36 which thereafter is locked in position by a vlock nut 43.

The punch 3| projects into an aperture 44 of a base 45 which is mounted on the frame Positioned in the aperture 44 is a sliding collar 46 having a reduced portion 41 and a center bore 48 which receives the punch 3|. Normally, the collar 4S is held in uppermost position against a stop 56 by a spring 5|, one end of which rests upon the bushing 38 and the other end bears against the collar 4S. However, when one of the dies 22 is lowered, it engages the upper face of the collar 46 and moves it downwardly into the position of Figure 11 against the compression of the spring.

The means for feeding a slug into the bore 48 of the sliding collar 46 each time the cross head 1 makes an excursion will now be described.

Mounted on the upper face of the base 45 is a block 52 which is grooved as at 53, 54 to receive the sliding bars 55, 56, respectively. The lower slide 56 is partially received in and guided by a groove 51 formed in the base 45. The upper slide 55 is retained in position by a cover plate 58 through which screws 59 pass to secure the assembly upon the base 45. Supported in an aperture 66 in any suitable manner is a feed tube or magazine 6| which retains and guides and feeds the slugs 62. The feed tube 6| may be connected to and constantly k'ept full of lead slugs by any suitable hopper or other means with agitating means, if desired, the details of which are not illustrated, since they form no essential part of the present invention.

When the parts are in the position illustrated in Figure 8 with the cross head 1 in uppermost position, the lowermost slug 62a in the feed tube rests upon a shelf 63 of the slide 55; another slug B2b lies upon the lower slide 56 and has previously been dropped into an aperture 64 in the block 52. The upper slide 55 is normally held in the position shown in Figure 8 by means of a spring 65 surroundinga stud 66,the spring being compressed between an oifset 61 on the slide 55 and an abutment 68 formed on the cover plate 58. The stud 66 is secured in the abutment 68 and passes through an aperture 69 in the oiset 61. The outer end of the stud 66 is screwthreaded to receive lock nuts 16 which serve as stops for the slide 55 when the parts are in the position illustrated in Figure 11. Movement of the upper slide 55 is limited by means of a pin 1| fastened to the' lower slide 56 and projecting through an elongated slot 12 in the block 52 and into a slot 13 in the upper slide 55.

When the parts are in the position of Figure 8, the pin 1| is in engagement with the rightnand end of the slot 13 and thus holds the upper slide 55 against the compression of the spring 65.

The lower slide 56 is controlled by an adjustable link structure 15, one end of which is -pivotally connected to a pin 16 carried on the slide, the other end being pivoted as at 18 to a cam lever 11 which, in turn, is pivoted as at 19 to a support 88. The support also may serve to support the upper end of the feed tube 6| and carry a hopper for the slugs 62. The cam lever 11 is actuated by a roller 82 confined in the space between the walls 8| of the cam 11 and carried by a bracket 83 secured to the cross head 1.

As the cross head descends the roller 82 rotates the cam lever 11 to the right, to the position illustrated in Figure 1, thus moving the lower slide 56 from the position of Figure 8 to the position of Figure l1. As the slide 56 and pin 1| move to the left, the spring 65 causes the upper slide 55 to follow until it is arrested by the lock nuts 10 on the pin 66. An aperture 85 at the end of the shelf 63 is now in alignment with the feed tube 6| and the lower slug 62a then drops upon the portion 86 of the block 52. The lower slide continues to move to the left, as shown in Figure 1l, the slot 13 permitting such free movement, until the aperture of the bushing 81 in the slide 56 comes into alignment with the aperture 64, whereupon the slug B2b drops upon the bottom of the groove 51 in the base 45.

Referring to Figures 8 and 11, it will be seen that, as the cross head 1 descends, one of the dies 22 on the dial 2| engages the sliding collar 46 and moves it against the compression of the spring 5| until the reduced portion y3|a of the punch 3| penetrates vthe cavity of the die 22. Assuming that a slug 62 has previously been deposited in the aperture 48 and supported on top of the punch as shown in Figure 8, the lead slug first enters the die cavity and thereafter is pressed into the shape of the cap 32. This also causes the knockout pin 21 to be pushed upwardly until its fluted head 28 projects into the circular channel 36 of the disc I6.

As the cross head 1 rises, the sliding collar 46 is returned, by means of the spring 5|, to initial position and the cup-shaped member 32 remains within the cavity of the die 22, being frictionally held therein.

Furthermore, the roller 8?. imparts retrograde rotation to the cam lever 11 and returns the lower slide y56 and upper slide 55 to starting position, shown in Figure 8. The lower slide, as it is moved to the right, carries along the slug B2b, closes the bottom of the aperture 64 and nally moves the upper slide 55 by means of the pin 1| to initial position; whereupon, the slug 621) drops into the aperture 48 of the sliding collar 41 and rests upon a punch 3|.

'Ihe upper slide also carries the slug 62a, which had been resting upon the portion 86 of the block 52, to the right until finally the aperture 85 is in alignment with the aperture '64 in the block 52; whereupon, the slug drops and assumes the position of slug 62h of Figure 8.

As previously pointed out, the dial is rotated one step-in this case, 60 degrees-when the cross head reaches its uppermost position and the next succeeding die is positioned in proper alignment with the punch 3 The next step of positioning the nail and forming the lead cup about the head 4of the nail will now'be described. w

Referring to Figures 1,1 2, 3V andKV 7, a pair of brackets 90,"90 is mounted upon the frame for example, by bolts 9|. Secured to the brackets are feed tracks 92 andl 92d, respectively, each of which is connected to a track extension 93 leading to any suitable source of supply ofnails. The means for placing the nail on the inclined track are not illustrated, since they form no'essential part of the present invention.

The inclination of the tracksszysza and `sa is such that the nails 94 descend 'by gravity and are supported only by their heads which rest on the upper inclined face of thefeed track; whereas, the nail -shanks depend intoa groove or; channel 95 formed in the feed tracks. In order to prevent nails with oversize heads from reaching the head-forming mechanism, a vpair of gauging rollersv '96 is provided on yeach track extension 93 which prevent any oversized nail head from passing. Such nails may then be removed manually,orlot'herwise. f

Preferably, there is a continuous row of nails in each feed track; the lowermost nail of each comes to rest against the fingers of a feed mechanism generally indicated by 99 which functions to separate one nail lalternately from each of the feed track- s 92 and 92a, as shown inFigures2, 3, 7 and 12.

Thenail-feeding*mechanism 91 includes plates 98 having fingers 99 with beveled ends |00. The ends of the fingers 99 taper, as shown particularly in Figures 7 and 12, and Vare sli'dlably received in suitable slots |0|, in the lower ends of the tracks y92 and 92a The plates 98are mounted on brackets |02A withV the fingers 99 facingy toward each other. The brackets |02, in turn, are secured to a bar |03 mounted for reciprocation in bearing members |04, `each of whichv is fastened to each of the feed tracks'92 .and 92a. Intermediate the brackets |92 the bar |03 carries a plate |05, to which a plurality of bars |06 are mounted, the ends of which come in close proximity to the tapered ends |00 of the` ingers1`99. The bars |06 are of less thickness than the {fingers V99, as illustrated in Figure 12, and the ends are beveled as at |01 to provide a space sucient for a nail shank to pass through. The

which is pivoted to the bar |03 andan upper bar ||0 having lugs to provide a space-1H.. The bar 0 is held in position by means of sprngsHZ 4about bolts ||3 having'lock nuts ||4 to adjust the tension of the springs. Both members 09 and |0 are notched as at' 'I l5 to receive a 'pin-t ||6 on an arm ||1 which Vis -secured to a shaft |8 mounted in a bracket |9. The shaft |i8carries a second arm |20, which is pivotallyconnected to a rod |2|. Any suitablemechanism may be employed for rocking the'lever structure in sequence from the full line position to the dotted line position, and vice versa, shown in'Figure '7. The mechanism, however, has not been shown in the drawings since its details form no essential part of the present invention.

Assuming that the parts are in the position of Figure 12, the nail shank of the lowermost nail, indicated by 94a, depending vin the grooveof the feed track 92, Aconta-cts the fingers 99 associated with said feed track.' `lhelowermost nail shank ends o f the bars |06 also rmove into the slots4 |0|,

' it` moves the bars |06 and fingers 93 to the right,

referring to Figure 12, causing the beveled faces |00 of the fingers 99 associated with the feed track 92a to force `the nails'hank 94h past the upon, the lowermost nail `94a slides byAg-ravity against the blades |06.'-

During the next cycle of operation, the levers ||1, |20, and, consequently, the feeding mechanism `91, are moved back t0 the initial orfullv line position, and the n-ail shank 94a is guided and forced through the channel between beveled ends |00 and |01 of fingers 99 and bars |06, cooperating `with feed=track 92, respectivelyand drops into the aperture |23 of said track. A

a nail drops into either of the apertures |23 of the nail tracks .92 Vor92a, it is received in a tapered cavity |24 formed in a pair of fingers |25, |26, shown in detail in Figures l, 3 and '13, and held particularly within the cavity |23, as shown in Figure 3. V The fingers are pivoted as at |21 to suitable bearings yon the base 90. The mechanisms associated with the feed tracks 92 and 92a are identical, and a description of one will suffice. VNormally, the fingers |25 and |`26 are held in the full line positionv of Figure 13 by plungers |20 and springs |29. Lugs |25a and |26a on the fingers are adapted to Iengage the outer face of the nail chute and stop the ngers, as `Shown in Figure 1. Y

' Referring to Figures 1, 6, 7 and 14, a'shaft |30, mounted in suitable bearings in the frame I, carries a punch holder |3| having two split arms |32 with downwardly projecting bosses |33. Slots |34 are provided inthe vframe inV orderto permit arocking movement of the punch holder |3I. I yThe 'bosses l|33 are threaded to receive the threaded' shank |35 of a bolt, shown with a hexagon'head |36, adapted to receive a tool Wherebythe bolt may be adjusted in relation to 'the punch holder. Clamping screws |31 lock the parts in proper position. Positioned in a counterbore |38 is a punch`| 39, held against displacement by a lockingmember |40. In alignment with an aperture '|4| in the punch |39 is an aperture |42 in the bolt |35. An aperture |43 of largerdiameter is formed in the boss |33 of the punch holder and adapted to receive a plunger |44 hav- 'ing a pin |45. A spring'` |46, compressed between a screwthreaded plug |41 andthe plunger |44,

, normally holds the plunger in the position of Figure V15. The punch holder is of such shape that when it assumes the position of Figure 6, the punch |39 is in alignment with one of the dies `22 on the dial 2|; whereas, the punch |39a is in alignment withv the aperture |23 of the feed rack 92. As the shaft |30 andpunch holder |3| are rotated through an arc in the direction of the arrow 40f Figure, the punch |.39a is brought into alignment with one of the dies 22 and the punch |39, and into alignment with the aperture |23 of the-feed rack 9211.3' Any suitable mechanism, not shown, may be employed to rock the shaft |30 back andforth.

Means for inserting a nail into the punch |39 or |39a will now be described.

,In the position in which the parts are shown in Figures 1 and 3, the punch |39a is in position to receive a. nail 94 which has been positioned in the aperture |23 of the feed track 92.

In alignment with the aperture |23 of the track 92 is a stem |50 which is slidably mounted in bearings |5I, carried by a tube |52 which, in turn, is supported on a bracket |53 upon the cross head 1. An identical structure is positioned in alignment with the aperture |23 of the feed track 92a. The stem is normally held in the position shown in Figure 1 by a spring |54 compressed between a collar |55 on the stem |50 and the upper bearing |5|. The Vstem projects above its upper bearing in close proximity with an actuating lever |56 of a limit switch |51 which controls the motor for driving and actuating the mechanism above referred to.

When the cross head 1 descends, the stem |50 is moved from the full line position of Figure 3 to the dotted line position of that figure. During this movement, the stem engages the head of the nail and pushes it downwardly into the punch |39a. Obviously, the nail and stem |50|force the fingers |25, |26 apart to the dotted line position of Figure 13 to release the nail. In the lowermost position of the cross head 1, the nail head has cleared the fingers |25, |26 and, as the cross head and stem |50 are raised, the fingers are returned to their normal position by the spring plungers |28.

In order to align the punch |39 and |39a, there is provided an adjustable stop pin |58 in each base 90 for the two arms |32 ofthe punch holder |3|. v

When the cross head 1 is in raised position, the punch holder |3| is rocked so as tobring the punch |390, into alignment with one of the dies 22, which contains a lead cup 32. During the succeeding descent of the cross head 1, the die 22 is penetrated bythe punch |39a and the lead cup is pressed about the nail head. As the cross head rises, friction holds the lead cup in the cavity of the die and the nail is withdrawn from the punch |390., and thus is carried by the dial to the position of discharge below described.

Figure 14 illustrates the step of pressingand forming the lead cap about a nail when the punch |39 is in position as illustrated in Figure 6. Figure 15 illustrates the position of the nail 94 before the cup is closed by the die 22. The plunger pin |45 normally holds the nail head a predetermined distance above the punch. As the die 22 assumes its lowermost position, it depresses the nail and plunger |44 against the compression of the spring |46, which, as the die is raised, assists in pushing the nail upwardly and prevents the lformed cap from becoming loose in the die cavity.

Means for dislodging the lead-cappednail from the die are as follows:

Referring to Figures 1, 2 and 5, a knockout plunger |60 is mounted in a bearing aperture in the cross head 1 and is normally thrust upwardly by a compression spring |6I, one end of which engages the head of the plunger |60, and the other end, a seat |62 in the cross headv T. Upward movement of the plunger |60 is limited by engagement with a camming portion |63 of a bell crank lever |64, which is pivoted as at |65 on a justably mounted on one of the bearing sleevesv 3 and held in proper alignment by ka guiding block |1| fastened to the cross head 1. Secured in the lower end of the knockout plunger |60 is a shearing pin |12 which is in alignment with an aperture |13 in communication with the slot 30 of the disc |0.

When the dial 2| is at rest, one of the dies 22 is always in alignment with the knockout plunger |60. In the uppermost position of the cross head 1, the plunger |60 and its shearing pin |12 are in raised position and above the knockout pin 21, 28, associated with the die 22.

As the cross head descends, the roller rides upon the inclined face |10 and rotates the bell crank lever |64 counter-clockwise from the position shown in Figure 5, thus pushing the knockout plunger |60 downwardly. The shearing pin |12, in turn, engages the head 28 of the pin 21 and forces the lead head of the nail out of the cavity of the die 22. As the nail is dislodged, it drops into a chute |13a which conveys the nail into any suitable receptacle. Preferably, the chute is provided with an inclined upper portion |14 adapted to engage and tilt the nail in order to break the bond between the nail cap and die cavity. During the upward movement of the cross head 1, the knockout mechanism is restored to initial position.

Figure 17 illustrates various sizes of plunger pins comprising parts |44, |45 for the punch 39 and |390.. They are interchangeable to accommodate various lengths of nails for which the machine is adaptable. A

Although there is shown an operative form of the device, it will be understood that many changes in the form, shape and arrangement of parts might be made without departing from the spirit of this invention, and it is wished that the showing be taken as, in a sense, diagrammatic.

The use and operation of this invention are as follows:

In the machine of this invention in one operation of its cross head 1 and dial 2| with its dies 22, it simultaneously forms a cup-shaped member 32 from a lead slug 62, 62a or 62h; presses that lead cup 32 about the head 94a of a nail 94 which, the cup 32 having been formed in a previous operation, discharges a completed capped nail. It also feeds a new slug 62 into the cavity 48 of the punch collar 46 and furthermore feeds a nail into one of the punches |39 or |39a, which is positioned, during the cycle of operation, in alignment with a die 22 for the succeding operaion.

During each operation of the cross head, the cam lever 11 is actuated by the roller 82 which moves the sliding members 55, 56 in order to pick up a new slug 62 from the feed tube or magazine 6| and to deliver a slug to the punch for the succeeding forming and capping operation. At o1' near the uppermost position of the cross head 1, the dial 2| is rotated one step in order to align an empty die 22 with the punch 3|, and, simultaneously, to align one of the formed lead cups 32, adhering in the cavity of the dies, with either one of the punches |39 or |39a which contains a nail, and, finally, to align a die carrying a finished nail with the knockout mechanism, including the knockout plunger |60. The plunger |60 is provided with a shearing pin |12 which prevents damage of the plunger |60, should the knockout plunger fail to lift.

During each cycle of operation, the punch holder IBI, supporting the punches |39 and |39a, is rotated either clockwise or counter-clockwise to align, for example, the punch |39 with a die 'and thev punch |39a with the'nail-feeding mechanism.. At the succeeding operation, the position and function of the punches |39 'and IP-9a are reversed. Y

Finally, during each operation the nail-feeding slide |03 is actuated by levers H1, |29 toieed a nail' into one of the punches |39, |390., whichever Aoneis in nail-receiving position. Should `a vnail fail to'enter the punch, due to malformation'or to any other cause, the stem will actuate the limit switch lever |56 and stop the machine.

I claim: l

1. In combination in an apparatus for forming andfapplying lead heads to the headsof nai1s a movable diey carrier, and means forV moving it, a plurality of forming dies positioned therein, means for conveying slugs to said'dies,n a nail-conveying means, means for directing nails therealong, a nail-supporting means positioned to cooperate with said nail-guiding means, and a move able dieV carrier positioned adjacent said nail conveyor, a die in said carrier, and means for releasing said nail-holding means to deposit nails4 in said last mentioned die, means cooperating with the die of said rst mentioned die carrier for forming a lead slug positioned within said die into a cup-shaped member,V means for moving said iirst mentioned die carrier to bring said die into alignment with said nail-holding die, and means for moving said rst mentioned die carrier with its die toward said nail-carrying die, wherebya lead cup is crimped about and beneath the head of a nail and along its shank.

H2. In combination in an apparatus for forming and applying lead heads to the heads of nails, a rotary die carrier, and means for rotating it, a plurality of forming dies positioned therein, means for conveying slugs to said dies, a nail- `conveying means,V means for directing nails therealong, a nail-supporting means positioned to cooperatewith said nail-guiding means, and a movable die c-arrier positioned adjacent saidnail conveyors, a die in said carrier, and means for releasing said nail-holding means to deposit nails in said last mentioned die, means cooperating with .the die of said rst mentioned die lcarrierfor forming a lead slug positioned withinsaidrdie into a cup-shaped member, means for movingsaid .rst -mentioned die carrier to bring said die into f alignment with said nail-holding die, and means Ufor moving said first mentioned die carrierwith its die toward said nail-carrying die, whereby a lll lead cup is crimped about and beneath the head ofa nail and along its shank. Y

3. In combination in an apparatus for forming .and applying lead heads to the headsof nails, a f movable die carrier, and means for moving it, a

plurality of forming dies positioned therein,

means for conveying slugs to `said dies, ar'nail- 'cooperate with said nail-guiding means,V and a movable die carrierpositioned adjacent'A said nail conveyor, ardie .in said carrier, and means for releasing said nail-holding means to deposit nails in said last mentioned die, means cooperating with the die of said rst mentioned die carrier for forming a lead slug positioned within said die into a cup-shaped member, means for moving said first mentioned die carrier to bring said die into alignment with said nail-holding die, and means for moving said first mentioned die carrier with its die toward said nail-carrying die, where- :by a lead cup is crimped about and beneath the head of a nail and along its shank, means for separating the two dies and 'forw'ithdrawing the nail with the attached lead head.

4. In combination in an apparatus forv forming" and applying lead heads to the heads of nails, a rotary die carrier, and meansl for'rotating it, a plurality of forming dies positioned therein, means for conveying slugs to said dies, a nailconveying means, means for directingnails therealong, a'nail-supporting means positioned to cooperate with said nail-guiding means, and a movable die carrier positioned adjacent saidl nail conveyors, a die in said carrier, rand means for releasing said nail holding means to deposit nails in said last mentioned die, means lcooperating with the die of said rst mentioned die carrier for forming a lead slug positioned within said die into a cup-shaped membergmeans for moving said first mentioned die carrier tozbring said die into alignment withsaid nail-holding die, and means for moving said first mentioned die carrier with its die toward said nail-carrying die, whereby a lead cup is crimped about and beneath the head of a nail and along its shank, means for separating the two dies and for Withdrawing the nail Withthe attached lead head, and means for discharging the nail and head from theforming die.

5. In combination in an apparatus for forming and applying lead heads to the heads Aof nails, a movable die carrier, and means for moving it, a

plurality of forming dies positioned therein,

means for conveying slugs to said dies, a plurality of "nail-conveying means, meansjfordirectihg nails therealong, a pluralityof nail-sup:-

porting means, one positioned to cooperatewith veyors, a plurality of dies in said carrier,jone for each of said nail conveyors, and means for moving said carrier to bring said Ydies alternately toward and from said carriers, and means for releasing said nail-holding means toV deposit nails in 'said last mentioned dies, meanscooperating with the dies 'of said rst mentioned die carrier for forming a lead 'slug positioned'within said die `into a .cup-*shaped member, means for moving said first mentioned die carrier to bring said dies into alignment with saidj nail-'holding die, and means for movingsaidrlrst mentioned die carrier with its'dies towardsaid nail-carryingv die, whereby a lead cup is crimpedabout and beneath the ,head of a nail and along its shank. f

V6. VIn combination in an apparatus for forming andapplying leadheadvsgto the heads of nails, a rotary die carrier, and meansfor rotating it, a plurality of forming dies positioned therein, means for conveying slugs tosaid dies, a plurality of nail-'conveying means, means for directing nails therealong, a plurality of nail-supporting means, one positioned tol cooperate witheach of said' nail-guiding means, and va movable die carrier; 'positionedV adjacent said nail conveyors, aA plurality of dies, in-said carrier, one for each of saidnail conveyors, and meansjfor-moving said carrier to bring said dies altenately toward and from said carriers, and means for releasing said nail-holding means to deposit nails in said last mentioned dies, means cooperating with the dies of said first mentioned die carrier for Aforming a lead slug positioned within said die into a cup-shaped member, means for moving said rst mentioned die carrier to bring vsaid dies into alignment with said nail-holding die, and means for moving said rst mentioned die carrier with its dies toward said nail-carrying die, `whereby a lead cup is crimped about and beneath the head of a nail and along its shank.

'7. In combination in an apparatus for forming and applying lead heads to the heads of nails, a rotary die carrier, and means for rotating it, a plurality of forming dies positioned therein, means for conveying slugs to said dies, a plurality of nail-conveying means, means for directing nails therealong, a, plurality of nail-supporting means, one positioned to cooperate with each of said nail-guiding means, and a movable die carrier positioned adjacent said nail conveyors, a plurality of dies in said carrier, one for each of said nail conveyors, and means for moving said carrier to bring said dies alternately toward and from said carriers, and means for releasing said nail-holding means to deposit nails in said last mentioned dies, means cooperating with the dies of said rst mentioned die carrier for forming a lead slug positioned within said dieA into a cupshaped member, means for moving said first mentioned die carrier to bring said dies into alignment with said nail-holding die, and means for moving said first mentioned die carrier with its dies toward said nail-carrying die, whereby a lead cup is crimped about and beneath the head of a nail and along its shank, means for separating the two dies and for withdrawing the nail with the attached lead head, and means for discharging the nail and head from the forming die.

8. In combination in a nail heading machine, a heading assembly including a plurality of heading dies, a movable carrier therefor, a pair 'of nail guiding means adapted to convey nails toward said dies and toward said carrier, means for Afeeding nails alternately from said nail carriers to a heading die, means for conveying lead slugs to said dies, and means for forming said slugs about the heads of said nails.

9. In combination in a nail heading machine, a heading assembly including a plurality of heading dies, a movable carrier therefor, a pair of nail 'guiding means adapted to convey nails toward said dies and toward said carrier, means for feeding nails alternately from said nail carriers to a heading die, means for conveying lead slugs to said dies, and means for forming said slugs about the heads of said nails, said heading die carrier being mounted for rotation, and said slug feeding means being mounted for reciprocation.

10. In combination in a nail heading machine, a heading assembly including a plurality of heading dies, a movable carrier therefor, a pair of nail guiding means adapted to convey nails toward said dies and toward said carrier, means for feeding nails alternately from said nail carriers to a heading die, said means including a reciprocating slide provided with a feeding opening for each of said nail guiding means, means for conveying lead slugs to said dies, and means for forming said slugs about the heads of said nails.

11. In combination in a nail heading machine, a heading assembly including a plurality of heading dies, a movable carrier therefor, a pair of nail guiding means adapted to convey nails toward said dies and toward said carrier, means for feeding nails alternately from said nail carriers to a heading die, said means including a reciprocating slide provided with a feeding opening for each of said nail guiding means, means for conveying lead slugs to said dies, and means for forming said slugs about the heads of said nails, said heading die carrier being mounted for rotation, and said slug feeding means being mounted for reciprocation.

12. In combination in a nail heading machine, a heading assembly including a plurality of heading dies, a movable carrier therefor, a plurality of nail guiding means adapted to convey nails toward said dies and toward said carrier, means for feeding nails alternately from said nail carriers to a heading die, means for conveying lead slugs to said dies, and means for forming said slugs about the heads of said nails.

13. In combination in a nail heading machine, a heading assembly including a plurality 4of' heading dies, avmovable carrier therefor, a plurality of nail guiding means adapted to convey nails toward said dies and toward said carrier, means for feeding nails alternately from said nail carriers to a heading die, means for conveying lead slugs to said dies', and means for forming said slugs about the heads of said nails, said heading die carrier being mounted for rotation, and said slug feeding means being mounted for reciprocation.

14. In combination an apparatus for forming and applying lead heads to the heads ofnails, a movable die carrier, and means for moving it, a plurality of downwardly facing forming' dies positioned therein, means for conveying slugs lto said dies, a nail-conveying means, means for directing nails therealong, a nail-supporting means positioned to cooperate with said nail-guiding means, and a movable die carrier positioned adjacent said nail conveyor, a die in said carrier, and means for releasing said nail-holding means to deposit nails in said last mentioned die, means cooperating with the die of said first mentioned die carrier for forming a lead slug positioned within said die into a downwardly facing ycupshaped member, means for moving said first mentioned die carrier to bring said die into alignment with said nail-holding die, and means for moving said first mentioned die carrier with its die toward said nail-carrying die, whereby a lead cup is crimped about and beneath the head of a. nail and along its Shank.

15. In combination in an apparatus for forining and applying lead heads to the heads of nails, a rotary die carrier, and means for rotating it, a plurality of downwardly facing forming dies positoned therein, means for conveying slugs to said dies, a nail-conveying means, means for directing nails therealong, a nail-supporting means positioned to cooperate with said nail guiding means, and a movable die carrier positioned adjacent said nail conveyors, a die in said carrier, and means for releasing said nail-holding means to deposit nails in said last mentioned die, means cooperating with the die of said iirst mentioned die carrier for forming a lead slug positioned within said die into a downwardly facing cupshaped member, meansY for moving said rst mentioned die carrier to bring said die into alignment with said nail-holding die, and means for movingl said rst mentioned die carrier with its die toward said nail-carrying die, whereby a lead cup is crimped about and beneath the head of a nail and along its shank.

16. In combination in a nail heading machine, a heading assembly including a plurality of heading dies, a movable carrier therefor, a pair 5 aA heading assembly including a plurality of head ing dies, a movable carrier therefor, a pair of nail guiding means adapted to convey nails toward said dies and toward said carrier, means for feeding nails alternately from said nail carriers to a heading die, said feeding means including a die carrying member, a plurality of dies in said member, means for rocking said member to move each of said dies alternately toward and away from one of said nail guiding means, means for conveying lead slugs to said dies, and means for forming said slugs about the heads of said nails,

said heading die carrier being mounted for rotation, and said slug feeding means being mounted for reciprocation. l KARL E. SWANGREN.

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