US886960A - Machine for making roofing-nails. - Google Patents

Machine for making roofing-nails. Download PDF

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US886960A
US886960A US29895?06A US886960DA US886960A US 886960 A US886960 A US 886960A US 886960D A US886960D A US 886960DA US 886960 A US886960 A US 886960A
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wire
strap
dies
die
nail
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US29895?06A
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John E Dobson
William E Wiley
William H Hart
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21GMAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G5/00Making pins or nails with attached caps or with coated heads

Definitions

  • This invention is a novel machine particularly designed for producing rooting nails having large metallic heads and wire nail shanks.
  • It is also adapted to produce nails of various sizes having metal heads, and also for producing nail strips or metal straps with a plurality of nail shanks or points attached thereto.
  • the invention is adapted to produce from strap metal and wire, complete nails or nailing strips. 7
  • the invention in brief comprises mechanism for feeding the strap metal, mechanism for feeding the wire; mechanism whereby the wire is caused to penetrate-the strap 'mech; anism whereby the wire is severed in nail lengths; mechanism whereby the wire is riveted to the strap: and mechanism whereby the attached shanks are'severed from the wire.
  • 1t also embodies mechani m for barbing the wire, mechanism for concave-converting the heads; and mechanism for pointing the shanks.
  • Figure 1 is a front elevation of the tmerativaparts of the machine.
  • Fig. 2 is an end elevation of Fig. 1.
  • Fig. 3 is a front elevation of the tmerativaparts of the machine.
  • Fig. 4 is an enlarged. inner end toward and from each other, by means of view of the slide D and the dies attached thereto
  • Fig.6 is a top plan view of Fig. 4.
  • Fig. 6- is an inner end View of the slide-C and dies attached thereto.
  • Fig. 7 is a top planview of Fig. 6.
  • Fig. 8 is an enlarged sec tional view through the heading and swaging dies.
  • Fig. 9 is an enlarged sectional view of one of the barbing rollers.
  • Fig. 10 is an en- 3 large sectional view through the upper punching dies.
  • Fig 11 is a detail sectional view of the stra -feeding device.
  • Fig. 12' is a detail sectiona view of the strap positioning devices.
  • Fig. 13 is an enlarged trans- 7 verse sectional view through the wire severing and pointing dies, and the heading dies, showing theparts ready to head the severed nail and rivet it to the strap.
  • Figs. 14 and 15 are detail views of parts of the pointing i and severing dies.
  • Fig. 16 is a detail view illustrating the pointing of the wire.
  • tube 1 From tube 1 it passes between barbg5 ing or roughening rollers 1, which are pref- 'erably serrated and have an annular V- shaped groove 1 preferably of slightly less diameter in cross section than the diameter of the wire, so that as the wire passes between these rolls it is roughened or serrated by the points of the serrations at the sides of the groove.
  • barbg5 ing or roughening rollers 1 which are pref- 'erably serrated and have an annular V- shaped groove 1 preferably of slightly less diameter in cross section than the diameter of the wire, so that as the wire passes between these rolls it is roughened or serrated by the points of the serrations at the sides of the groove.
  • the rolls 1" are journaled on stud bolts 1 which have a reduced portion 1 passing through 'a supportin plate 1 attached to the main-fran1e ant secured by nuts 1.
  • the parts 1' pass through slots in plates 1?, so that the rolls may be adjusted bolts 1 tapped through the ends of the plate, and when adjusted they are secured in position by tightening nuts 1,
  • the rolls 1 are retained in position on the bolts 1 by washers 1 and nuts 1, (see Fig. 9.) V
  • the rolls 1 might be rotated positively, but in the construction shown in Fig. 9, thrwire is pulled between the rolls, which bite thereon, by means of a reciprocating pulling device, shown in Fig. 1, comprising a sliding 110 late 2, having a fixed jaw 2 and a movable jaw 2 which 5 aw 2" is mounted on a lever 2 pivoted on the plate at 2", and this lever is pivotally connected by a link 2 to an arm 2 011 a rock-shaft 2 journaled in the 1nainframe and havin on its outer end a crankarm 2", to which is pivotally connected.
  • a reciprocating pulling device shown in Fig. 1, comprising a sliding 110 late 2, having a fixed jaw 2 and a movable jaw 2 which 5 aw 2" is mounted on a lever 2 pivoted on the plate at 2", and this lever is pivotally connected by a link 2 to an arm 2 011 a rock-shaft 2 journaled in the 1nainframe and havin on its outer end a crankarm 2
  • a shackle link 2 to which is pivoted a bracket 2 which moves at right angles to the link 2 and which is connected by a rod 2*, to a yoke 2, pivotally connected to a link 2*, pivoted on a stud 2, which is adjustably mounted on a plate 2 attached to the main-shaft S of'machine.
  • the stud 2 is attached to a sliding .block 2, on aging 'a T-slot 2- in plate 2 and adjustab e therein by means of a bolt 2, which is rotatable, but not longitudinally movable, in the slot.
  • a bolt 2 which is rotatable, but not longitudinally movable, in the slot.
  • the jaw 2 When the plate 2 moves toward the wire 'barbing rolls, the jaw 2 opens and slides along the wire. On the reverse movement jaw 2 first closes, biting the wire against jaw 2*, and then pulls the wire forward through the barbing rolls, feeds the wire forward into position .to be seized by the dies 3, 3 hereinafter referred to.
  • the extent of the openin movement of the aw 2 may be regulated y an adjusting bolt 2 tapped through a stud 2 on plate 2.
  • the end of the wire is fed through an opening in the base plate A of the machine, and
  • a guide-tube a which projects in line with the dies and from which the wire emerges directly in position to be seized by is securedto the head, also to sever the wire into nail len ths ,and also to pointthe wire.
  • the two ies 3 and 3 are respectively secured to opposite reciprocating slides C and D, which are mounted upon the base-plate A and are moved toward and from each other, so as to open and close the dies at the proper time, as hereinafter described.
  • the die 3 has a central vertical groove 3 in its face for the reception of the end of wire W, fed thereto as above describedj Its upper face is madeconvex as shown at 3 to assist in imparting a concavo-convex form to the nail-head as hereinafter explained. It is also provided with a beveled shearing-lug 3 which is adapted both to cut the wire as the eaaeeo inner edge of which is beveled as shown at 3 to correspond with the face of the lug 3, so that as the two dies come together, the beveled lug 3 shears off the wire, pointing the shearedofi' portion, as shown atw in Fig. 16, and leaving a straight end 7]) on the wire to be fed in.
  • the cuttings w from the wire pass through I the recess 3 and out through an opening 3 in the lower side of the die 3 and through an opening D in sl de D and an opening A in base-plate A, to any suitable receiver.
  • dies 3 and 3 may be securedin suitable recesses in the opposed ends of slides O and D, as shown, by means of screws 3 and 3 respectively, so the dies can be removed when necessary.
  • Dies 3 and 3 are preferably made in sections as indicated in Figs. 4, 6, 13 and T5, for the purpose of lessening the cost of repairs of these dies.
  • the part c of die 3 which contains the recess 3 may be made in another section a, as the principal wear on this die will be at the shearing-lug 3 and the part below the recess 3' which contains the opening 3 maybe made in another section 6
  • the die 3 may have the portion containing finger 3 and the shearing-lug 3, made separable from the upper and lower parts as shown at 6 so that they can be renewed when required without necessarily making an entire new die.
  • the part of die ,3 below section e may be another section 6*.
  • the section a may be longitudinally divided as indicated in Fig. 14, the left-hand part 6 being separable from'the linger 3.
  • the slides C and D are provided on their sides with beveled flanges c and d, engaging beveledguides (i on base-plate A, by which e the slides are guided in their reciprocation.
  • the slides are preferably moved to and from 7 each other to close and open the (lies at the proper times, by the following means, (see. Fig. 3.)
  • the slide C is pivotally connected by a bolt C to an eccentric strap 4, which ongages an eccentric 4 on a shaft 4 j ournaled in bearings 4 on the main-fral'ne.
  • eccentrics 4 which are engaged by yokes 4 on rods4", which are pivotally connected at their rear inner faces of slides C and D, as the latter are not intended to contact.
  • the shaft 4* is rocked at roper times, to open and-close the dies, as ollows: On one end of the shaft is keyed an arm 4, which is pivotally connected to the lower end of a bar P, the up er end of which is slotted to embrace sha t S, and is provided with a roller 4 engaging a race-cam 4 in a disk-4 keyed on the main-shaft S, as shown.
  • each punching die is preferably provided with semi-circular recesses 5 in their opposed faces, so that when the dies close together, they form a perfectly circular opening corresponding in size and form to the size and contour of the nail-head, which it is desired to produce.
  • the nail heads are circular.
  • These dies 5, 5 may have their working faces formed by semicircular segments 5 of hardened steel, so that these segments can be replaced if worn, or segments of the desired form may be substituted in case it is desired tochange the size or shape of the nail head, without necessitating making entirely new dies.
  • the slides C and D are recessed as shown at D and C so that the punchings or completed nails can drop through these dies and openings A in the base-plate into a suitable chute, by which the nails are discharged into a receptacle.
  • the heads of the nails are preferably formed from strap metal, which can be procured in long strips or rolls, and which is fed into the machine, past the dies 3,3 and 5, 5, and at right angles to the wire, in the following manner: Mounted on the base plate A at one side of the slides C, D, and moving at right angles thereto is a slide 6, guided by a dovetail groove on a rib A on the base A] On the outer side of this slide 6 are lugs 6*,
  • a dog 6 (see Fig. 11,) which is adapted to bite the metal strap H which passes between it and the slide 6 when the 0g is moved inward, but will release the stra when the dog is moved outward.
  • the dog is mounted on a shaft, 6 journaled in ears 6*, and said shaft has one end bent around, as shown, and engages the upper end of a spring 6 interposed between the end of the shaft 6 and the slide 6, said spring tending to cause the dog 6 to bite the strap,
  • the dog is pivotally connected by a link 6",,to a hellicrank lever 6, pivoted atiits end upon a bracket 6", attached to an adjacent stationary-part of the main frame; and the other arm of lever '6 is pivotally connected to a shackle 6 on the lower end of a rod'6 whichis slotted at its up er end to embrace shaft S, and is provided a ove and below the shaft with friction rollers 6" and 6, which engage a cam 6 on shaft S, so located that at the proper time, the slide 6 is reciprocated and the roper amount f stra forward or each recipro ation t ereof.
  • a frictional retainer may be employed, consisting of a sprin pressed block (i confined in a tubular gui e 6, and pressed outward by a spring 6 the tension of which isregu 'lable by a screw 6
  • the strap H is fed in when the dies 3, 3 and 5, 5 are open and between the dies and cooperating devices which co-act with the dies to shape the head of the nail in the stra metal, to force the end of the wire through the strap metal, to swage the end ofthe severed wire to the strap metal, and to subsequently punch the completed head with the attached barbed and pointed shank, from themetal strap.
  • These co-acting devices are mounted on a reciprocating slide 7, which moves per endicularly to the slides C and D, and is gui ed in its movement by guides attached to the frame of the press, as shown.
  • This slide 7 is reciprocated by means of a pitman 7 pivotally connected to one end of the block and engaging a crank S on shaft S.
  • said shaft is provided with a heavy belt fly-wheel S", which may be belted to any suitable driver.
  • slide 7 To the lower end of slide 7 is detachably attached ahead stock. 7 which is provided with a recess 7 on its under side directly over the dies 3 and 3, and also with a recess 7 directly over the punching dies 5 and 5.
  • a sleeve die 8 In the recess. 7 is fitted the upper end of a sleeve die 8,which is provided witha collar 8 to give it a firm bearing against-the under side of the head 7 and which has an internal flange 8?, on its lower end, see Fig. 8, upon which is supported the upper flanged end of a'pressing ring 8, which is forced downward by means of a very stout spring 8 contained within the die '8.
  • the sleeve die 8 is held in position by means of a bolt 8 tapped through the head 7 as shown.
  • the ring 8" normally projects below the en of the sleeve die 8, and is adapted to contact with the strap as the head 7 descends, before the die 8 comes in contact therewith.
  • the under side or lower end of the die 8 is concave,
  • the presser ring R" engages the strap and forces it against the projecting end of the wire shank 10, (which has just been severed from the wire S by the dies 3, 3%) and is firmly held in said dies with its end projeeting slightly above the ends thereof.
  • the sleeve die. and ring descend, the latter forces the strap against the end of the wire w, and compresses the spring 8 until the pressure becomes su'llleicnt to cause the end of the shank w to penetrate the strap metal, whereupon the spring snaps thering downward, forcing the strap H directly against the upper surface of the dies 3, 3, leaving the upper end of the wire pro ecting about i to above the strap.
  • the sleeve die descends still further and catching the strap between its lower end and the dies 3, 3*, imparts a concave-convex shape to the part of the strap, surrounding the upper end of the wiresl1ank.
  • the nail shank is swaged to the strap by means of a heading rod 8*, the lower end of which is guided in ring 8 and its upper end is securely fastened in a recess 7 in head 7' by a bolt 8 as shown.
  • This header rod is so positioned that after the'strap is punched by the wire, and just about as the dies 3, 3 and 8 begin to concavo-convex the portion of the strap around the wire, the header strikes the end of the shank andfiattens the same, riveting and swaging the shank to the strap, and because of a slight flow' of the.
  • the dies 3 and 3 have a slight cavity or enlargement 3 just at the upper ends of the recesses 3 as shown in Figs. 4 and. 6, to permit formation of this under shoulder on the shank. In this way the shank isswaged to the head in the most secure manner and the several perations are performed ,practicall simultaneously, or in closesuccession.
  • a punchingdie 5 attached to the head 7, in the opening 7 thereof, is a punchingdie 5, see Fig. 10, adapted to operate with thedies 5, 5 to cut the finished nail from the strap;
  • This punching die 5 has its lower end concaved as at 5 to correspond with the convexity of the nail head imparted by the dies 3, 3 and S, and, as it descends, it cuts the head and the attached shank from the strap and discharges the completed nail downward through die 5 and opening A as described.
  • a presser finger 5 which goes through die 5* and is downward by aspring 5 in the hollow of 5 pressed This finger not only assists in positioning the nail head over dies 5, 5*, but it furthermore acts as ejector to throw the nail when severed out of the dies, and thus insure clearance thereof, so that an incoming nail will not be obstructed.
  • the strap H may be guided in its travel through and between the dies by means of a guide bar 9 secured to the slide '1) in line with the travelof the strap H, as shown in Figs. 2, 3 and 12; and bya guide9 attached to the slide C opposite the bar 9.
  • This guide 9 is preferably attached to a rod 9 guided in a lock 9, attached to slide C and pressed forward by a spring 9.
  • the object of this construction is to keep the strap H always'positioned against the guide 9.
  • the guide 9 may have an overhanging lip 9 which serves to revent thestrap H arising thereover, and t e guide 9 may be provided with fingers 9 projecting over the strap for thev same purpose. These fingers prevent the strap rising or lifting with the upper dies during their upward mrurement.
  • the machine above described is an eflicicnt rapidly acting machine, and when the punching dies are used, will produce com plete perfect nails, with strap metal'or sheet metal heads. By omitting or removing the punching dies and their co-acti'ng dies the machine will produce a continuous nailing provided with a series of nailin can be very usefully employs or different purposes but which article is not claimed in this application.
  • a roofing nail making machine of means for feeding a metal strap, means for feeding a wire, means for causing the wire to perforate the strap, means for severing the wire into a nail length and pointing the severed end, means for swaging the. severed portion of the wire to the strap, means for concavo-convexing the strap around the wire to form the nail head, and means for subsequently punching the nail head to which the cut wire is attached from the strap.
  • a roofing nail machine In a roofing nail machine, the combination of means for feeding a metal strap, means for presenting a severed piece of wire thereto, means for forcing the end of the severed wire through the strap, means for concavo-convexing the part of strap around the wire, means for swaging the end of the wire to the strap, and means for subsequently severing the portion of the strap to which the wire is secured from the body of the strap.
  • a roofing nail machine the combination of means for feeding a wire, dies-adjacent the line of wire feed adapted to sever a nail length from the wire, point its end and hold it during the heading operation, means for feeding a metal strap over the end of the 1 low the strap, and to impart a concave-convex sha e to the nail head; with means adjacent t e line of feed of the metal strip for subsequently punching the nail head and attached wire shank from the strap.
  • opposed dies having respectively a concave and a convex end adapted to shapethe nail head with a presser ring, and a header rod in one of the dies, substantially as set forth.
  • a wire clamping die composed of opposite similar members adapted to clamp a wire between them, one of said members having'a beveled shearing edge and the other member having a beveled shearing lug adapted to sever the wire diagonally and thereby point it as the die is closed.
  • a wire clamping die composed of opposite similar members adapted to clamp a wire, one of said members having a beveled shearing edge and the other member having a beveled shearing lug adapted to diagonally sever the wire as the die is closed; .with a co-acting heading die adapted to head the severed wire while held by the first dies for the purpose described.
  • a wire pointing die composed of opposite similar'members, one of saidmembers having a recess and a shearing edge and its other member having a finger adapted to enter the recess, and a beveled shearing lng adapted to sever the wire as the die is closed.
  • a nail making machine the combination of opposite slides, wire cutting and pointing die members attached to adjacent ends of said slides, and means for moving the sl des to open and close the dies; with means for feeding a wire; a head moving at rightmeans for moving the slides to open and close the 1 dies; with means for feeding a wire, a head moving at right-angles to the slides, a punching die thereon adapted to cooperate with the punching die on the slides, and a swaging die, presser-ring and header-rod attached to said head and cot'iperating with wire clanlping dicsysaid prcsser-ring being connected with said swaging die, and said header-rod being arranged in said ring and die, and means for feeding a strap between the dies.

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Description

PATENTED-MAY 5, 1908. H. HART.
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J. E. DOBSON; W. E. WILEY & w.
MACHINE FOR MAKING ROOFING NAILS APPLIOA TION FILED n3. 1, 1906.
4 SHEETS-SHEET 1.
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4 SHEETS-SHEET 2.
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No. 886,960. PATENTED MAY 5', 1908. J. B. DOBSON, w. E. WILEY & w. H. HART. MACHINE FOR MAKING ROOFING NAILS.
APPLICATION FILED FEB. 1, 1906.
No. 886,960.. PATENTED MAY'5, 1908.
J. E. DOBSON, W. E. WILEY 8: W. H. HART. V
MACHINE FOR MAKING ROOFING NAILS.
APPLICATION FILED FEB. 1, 1906.
4 SHEETS-SHEET 3.
PATENT-ED MAY5, 1908. J. E. nosson, w. E. WILEY &w. H. HART. MACHINE FOR MAKING ROOFING NAILS.
APPLICATION FILED FEB. 1, 1906. v
4 SHEETSr-BEEET 4.
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a I dwfliz EN .TORS
WITNESSES: 4
outrun srnrns earnnr QFFIGE.
JOHN i D OHSON, 01* YPSILANTI, AND WILLIAM E. WILEY AND WILLIAM H. HART, OF BATTLE CREEK, MItHIGAN, ASSIGNORS TO HOWARD B. SHERMAN, OF BATTLE GREEK,
MItlllGAN MACHINE FOR MAKING ROOFING-NAILS.
Specification of Letters Patent.
Patented ma 6, 1908.-
Application filed February 1, 1906. Serial No. 298,951
To all IF/m it may concern.
' of Ypsilanti, \Yashtenaw county, Michigan, and \YlLLL-XM E. WILEY and WILLIAM H. ,5 llAR'l, both of Battle Creek, Calhoun county, Michigan, have invented certain new and useful Improvements in l\lttt-l1i11(-S f01 Making Rootingi\'ails: and we hereby declare that the following is a full, clear, and exact to description thereof, reference being had to the accompanying drawings, which form part of this specification.
This invention is a novel machine particularly designed for producing rooting nails having large metallic heads and wire nail shanks. v
It is also adapted to produce nails of various sizes having metal heads, and also for producing nail strips or metal straps with a plurality of nail shanks or points attached thereto.
The invention is adapted to produce from strap metal and wire, complete nails or nailing strips. 7
We preferably employ wi e to form'the nail shanks, and strap meta or hoop stock to form the nail heads.
The invention in brief comprises mechanism for feeding the strap metal, mechanism for feeding the wire; mechanism whereby the wire is caused to penetrate-the strap 'mech; anism whereby the wire is severed in nail lengths; mechanism whereby the wire is riveted to the strap: and mechanism whereby the attached shanks are'severed from the wire.
1t also embodies mechani m for barbing the wire, mechanism for concave-converting the heads; and mechanism for pointing the shanks.
All of these operations are performed by the machine illustrated in the drawings, which is particularly' adapted for producing the rooting nails havingpointed and barbed wire shanks and concawvconvex round heads of sheet or strap metal.
The invention will be clearly understood from the following description of the said machine, and the parts and combination of parts for which protection is desired are set forth in the claims following the description.
in said drawingsFigure 1 is a front elevation of the tmerativaparts of the machine. Fig. 2 is an end elevation of Fig. 1. Fig. 3
is a transverse section showing a top plan I view of theslides and dies and their opera- Be it known that we, Joan E. DoBsoN, tive parts. Fig. 4 is an enlarged. inner end toward and from each other, by means of view of the slide D and the dies attached thereto, Fig.6 is a top plan view of Fig. 4. Fig. 6-is an inner end View of the slide-C and dies attached thereto. Fig. 7 is a top planview of Fig. 6. Fig. 8 is an enlarged sec tional view through the heading and swaging dies. Fig. 9 is an enlarged sectional view of one of the barbing rollers. Fig. 10 is an en- 3 large sectional view through the upper punching dies. Fig 11 is a detail sectional view of the stra -feeding device. Fig. 12' is a detail sectiona view of the strap positioning devices. Fig. 13 is an enlarged trans- 7 verse sectional view through the wire severing and pointing dies, and the heading dies, showing theparts ready to head the severed nail and rivet it to the strap. Figs. 14 and 15 are detail views of parts of the pointing i and severing dies. Fig. 16 is a detail view illustrating the pointing of the wire.
\Ve will now describe the machine as illustrated in said drawin s, like parts therein being similarly lettere so 7 The wire is fed into the machine from an ordinary coil. It passes up through a guidetube 1*, by which it is straightened. Any
other suitable straightening device may be used. From tube 1 it passes between barbg5 ing or roughening rollers 1, which are pref- 'erably serrated and have an annular V- shaped groove 1 preferably of slightly less diameter in cross section than the diameter of the wire, so that as the wire passes between these rolls it is roughened or serrated by the points of the serrations at the sides of the groove.
Preferably the rolls 1" are journaled on stud bolts 1 which have a reduced portion 1 passing through 'a supportin plate 1 attached to the main-fran1e ant secured by nuts 1. The parts 1' pass through slots in plates 1?, so that the rolls may be adjusted bolts 1 tapped through the ends of the plate, and when adjusted they are secured in position by tightening nuts 1, The rolls 1 are retained in position on the bolts 1 by washers 1 and nuts 1, (see Fig. 9.) V
The rolls 1 might be rotated positively, but in the construction shown in Fig. 9, thrwire is pulled between the rolls, which bite thereon, by means of a reciprocating pulling device, shown in Fig. 1, comprising a sliding 110 late 2, having a fixed jaw 2 and a movable jaw 2 which 5 aw 2" is mounted on a lever 2 pivoted on the plate at 2", and this lever is pivotally connected by a link 2 to an arm 2 011 a rock-shaft 2 journaled in the 1nainframe and havin on its outer end a crankarm 2", to which is pivotally connected. a shackle link 2 to which is pivoted a bracket 2 which moves at right angles to the link 2 and which is connected by a rod 2*, to a yoke 2, pivotally connected to a link 2*, pivoted on a stud 2, which is adjustably mounted on a plate 2 attached to the main-shaft S of'machine.
As shown, the stud 2 is attached to a sliding .block 2, on aging 'a T-slot 2- in plate 2 and adjustab e therein by means of a bolt 2, which is rotatable, but not longitudinally movable, in the slot. When adjusted to the proper position the stud can be ockedby-means of a nut 2 as shown. By
' this means the degree of movement imparted to the wire feeding device is easily regulable, and the extent and amount of wire fed at each reciprocation of the plate 2 exactly determinable.
When the plate 2 moves toward the wire 'barbing rolls, the jaw 2 opens and slides along the wire. On the reverse movement jaw 2 first closes, biting the wire against jaw 2*, and then pulls the wire forward through the barbing rolls, feeds the wire forward into position .to be seized by the dies 3, 3 hereinafter referred to. The extent of the openin movement of the aw 2 may be regulated y an adjusting bolt 2 tapped through a stud 2 on plate 2.
The end of the wire is fed through an opening in the base plate A of the machine, and
through a guide-tube a, which projects in line with the dies and from which the wire emerges directly in position to be seized by is securedto the head, also to sever the wire into nail len ths ,and also to pointthe wire.
The two ies 3 and 3 are respectively secured to opposite reciprocating slides C and D, which are mounted upon the base-plate A and are moved toward and from each other, so as to open and close the dies at the proper time, as hereinafter described.
The die 3 has a central vertical groove 3 in its face for the reception of the end of wire W, fed thereto as above describedj Its upper face is madeconvex as shown at 3 to assist in imparting a concavo-convex form to the nail-head as hereinafter explained. It is also provided with a beveled shearing-lug 3 which is adapted both to cut the wire as the eaaeeo inner edge of which is beveled as shown at 3 to correspond with the face of the lug 3, so that as the two dies come together, the beveled lug 3 shears off the wire, pointing the shearedofi' portion, as shown atw in Fig. 16, and leaving a straight end 7]) on the wire to be fed in.
The cuttings w from the wire pass through I the recess 3 and out through an opening 3 in the lower side of the die 3 and through an opening D in sl de D and an opening A in base-plate A, to any suitable receiver. The
dies 3 and 3 may be securedin suitable recesses in the opposed ends of slides O and D, as shown, by means of screws 3 and 3 respectively, so the dies can be removed when necessary.
Dies 3 and 3 are preferably made in sections as indicated in Figs. 4, 6, 13 and T5, for the purpose of lessening the cost of repairs of these dies. The outer part of each die, which contains the grooves 3 and 3*,may be made in one longitudinal section 6. The part c of die 3 which contains the recess 3 may be made in another section a, as the principal wear on this die will be at the shearing-lug 3 and the part below the recess 3' which contains the opening 3 maybe made in another section 6 By this means the parts of the die which are subjected to the most wear can be quickly replaced without necessitating the making of entire dies. Similarly the die 3 may have the portion containing finger 3 and the shearing-lug 3, made separable from the upper and lower parts as shown at 6 so that they can be renewed when required without necessarily making an entire new die. The part of die ,3 below section e may be another section 6*. The section a may be longitudinally divided as indicated in Fig. 14, the left-hand part 6 being separable from'the linger 3. Each die-3 and 3 -of course,can be made in one piece but constructing them in sections facilitates repairs and lessens the cost.
The slides C and D are provided on their sides with beveled flanges c and d, engaging beveledguides (i on base-plate A, by which e the slides are guided in their reciprocation.
The slides are preferably moved to and from 7 each other to close and open the (lies at the proper times, by the following means, (see. Fig. 3.) The slide C is pivotally connected by a bolt C to an eccentric strap 4, which ongages an eccentric 4 on a shaft 4 j ournaled in bearings 4 on the main-fral'ne. ()n the same shaft 4 are mounted eccentrics 4, which are engaged by yokes 4 on rods4", which are pivotally connected at their rear inner faces of slides C and D, as the latter are not intended to contact.
The shaft 4* is rocked at roper times, to open and-close the dies, as ollows: On one end of the shaft is keyed an arm 4, which is pivotally connected to the lower end of a bar P, the up er end of which is slotted to embrace sha t S, and is provided with a roller 4 engaging a race-cam 4 in a disk-4 keyed on the main-shaft S, as shown.
In the inner faces of slides C and D and adjacent dies 3, 3, are also preferably secured female punching dies 5 and 5; These punching dies are preferably provided with semi-circular recesses 5 in their opposed faces, so that when the dies close together, they form a perfectly circular opening corresponding in size and form to the size and contour of the nail-head, which it is desired to produce. In the example shown the nail heads are circular. These dies 5, 5 may have their working faces formed by semicircular segments 5 of hardened steel, so that these segments can be replaced if worn, or segments of the desired form may be substituted in case it is desired tochange the size or shape of the nail head, without necessitating making entirely new dies. Below the dies 5 and 5 the slides C and D are recessed as shown at D and C so that the punchings or completed nails can drop through these dies and openings A in the base-plate into a suitable chute, by which the nails are discharged into a receptacle.
The heads of the nails are preferably formed from strap metal, which can be procured in long strips or rolls, and which is fed into the machine, past the dies 3,3 and 5, 5, and at right angles to the wire, in the following manner: Mounted on the base plate A at one side of the slides C, D, and moving at right angles thereto is a slide 6, guided by a dovetail groove on a rib A on the base A] On the outer side of this slide 6 are lugs 6*,
between which is a dog 6 (see Fig. 11,) which is adapted to bite the metal strap H which passes between it and the slide 6 when the 0g is moved inward, but will release the stra when the dog is moved outward. Pre erably the dog is mounted on a shaft, 6 journaled in ears 6*, and said shaft has one end bent around, as shown, and engages the upper end of a spring 6 interposed between the end of the shaft 6 and the slide 6, said spring tending to cause the dog 6 to bite the strap,
The dog is pivotally connected by a link 6",,to a hellicrank lever 6, pivoted atiits end upon a bracket 6", attached to an adjacent stationary-part of the main frame; and the other arm of lever '6 is pivotally connected to a shackle 6 on the lower end of a rod'6 whichis slotted at its up er end to embrace shaft S, and is provided a ove and below the shaft with friction rollers 6" and 6, which engage a cam 6 on shaft S, so located that at the proper time, the slide 6 is reciprocated and the roper amount f stra forward or each recipro ation t ereof. As
metal fed the do is'tilted inward, it first bites the strap H firm y, and then pulls it inward. As the dog is tilted outw'ard, it first releases the strap and compresses spring 6, until the slide 6 moves outward. v
, In order to prevent the strap H slipping backward by frictional contact with the slide 6, a frictional retainer may be employed, consisting of a sprin pressed block (i confined in a tubular gui e 6, and pressed outward by a spring 6 the tension of which isregu 'lable by a screw 6 The strap H is fed in when the dies 3, 3 and 5, 5 are open and between the dies and cooperating devices which co-act with the dies to shape the head of the nail in the stra metal, to force the end of the wire through the strap metal, to swage the end ofthe severed wire to the strap metal, and to subsequently punch the completed head with the attached barbed and pointed shank, from themetal strap. These co-acting devices are mounted on a reciprocating slide 7, which moves per endicularly to the slides C and D, and is gui ed in its movement by guides attached to the frame of the press, as shown.
This slide 7 is reciprocated by means of a pitman 7 pivotally connected to one end of the block and engaging a crank S on shaft S. As shown, said shaft is provided with a heavy belt fly-wheel S", which may be belted to any suitable driver.
To the lower end of slide 7 is detachably attached ahead stock. 7 which is provided with a recess 7 on its under side directly over the dies 3 and 3, and also with a recess 7 directly over the punching dies 5 and 5. In the recess. 7 is fitted the upper end of a sleeve die 8,which is provided witha collar 8 to give it a firm bearing against-the under side of the head 7 and which has an internal flange 8?, on its lower end, see Fig. 8, upon which is supported the upper flanged end of a'pressing ring 8, which is forced downward by means of a very stout spring 8 contained within the die '8. The sleeve die 8 is held in position by means of a bolt 8 tapped through the head 7 as shown. The ring 8" normally projects below the en of the sleeve die 8, and is adapted to contact with the strap as the head 7 descends, before the die 8 comes in contact therewith. The under side or lower end of the die 8 is concave,
resser' sleeve die descendsupon the closed dies 3, 3
and clamps the strap metal ll therebetween the latter will be ct neavo-convexed around.-tl1e upper end of the nail shank or wire as hereinafter explained.
Before the sleeve die comes in contact with the strap ll, the presser ring R" engages the strap and forces it against the projecting end of the wire shank 10, (which has just been severed from the wire S by the dies 3, 3%) and is firmly held in said dies with its end projeeting slightly above the ends thereof. As the sleeve die. and ring descend, the latter forces the strap against the end of the wire w, and compresses the spring 8 until the pressure becomes su'llleicnt to cause the end of the shank w to penetrate the strap metal, whereupon the spring snaps thering downward, forcing the strap H directly against the upper surface of the dies 3, 3, leaving the upper end of the wire pro ecting about i to above the strap. Then the sleeve die descends still further and catching the strap between its lower end and the dies 3, 3*, imparts a concave-convex shape to the part of the strap, surrounding the upper end of the wiresl1ank.-'
Simultaneously with this shaping opera tion the nail shank is swaged to the strap by means of a heading rod 8*, the lower end of which is guided in ring 8 and its upper end is securely fastened in a recess 7 in head 7' by a bolt 8 as shown. This header rod is so positioned that after the'strap is punched by the wire, and just about as the dies 3, 3 and 8 begin to concavo-convex the portion of the strap around the wire, the header strikes the end of the shank andfiattens the same, riveting and swaging the shank to the strap, and because of a slight flow' of the. metal in the shank, it shoulders or swages the shank both above and below the head or strap, securely fastening the shank to the strap. The dies 3 and 3 have a slight cavity or enlargement 3 just at the upper ends of the recesses 3 as shown in Figs. 4 and. 6, to permit formation of this under shoulder on the shank. In this way the shank isswaged to the head in the most secure manner and the several perations are performed ,practicall simultaneously, or in closesuccession. shank is severed from the wire and pointed by the closing of the dies 3, 3 almost simultaneously the descent of the die 8, ring 8 and header 8 cause first the perforation of the strap, the concavo-convex shaping of the strap-around the head of the shankand' the swaging of the shank to the head, Instantly thereafter the slide 7 is retracted, the dies 3,
3 open and the strap is fed forward with the attached shank thereto and, at a succeeding operation, while another shank is being fastened to the strap metal as described, the
bus the oints whic previously aitaci 'wl shank and shaped head are. separated frail thestrap metal by a punching device, which comes in operation sinmlmimously with the shank attaching operation and is operated by the slide 7 as follows:
Attached to the head 7, in the opening 7 thereof, is a punchingdie 5, see Fig. 10, adapted to operate with thedies 5, 5 to cut the finished nail from the strap; This punching die 5 has its lower end concaved as at 5 to correspond with the convexity of the nail head imparted by the dies 3, 3 and S, and, as it descends, it cuts the head and the attached shank from the strap and discharges the completed nail downward through die 5 and opening A as described.
In order to get the strap firmly u on the die 5 and 5 before the male die 5 strikes the strap, Ipreferably employ a presser finger 5 which goes through die 5* and is downward by aspring 5 in the hollow of 5 pressed This finger not only assists in positioning the nail head over dies 5, 5*, but it furthermore acts as ejector to throw the nail when severed out of the dies, and thus insure clearance thereof, so that an incoming nail will not be obstructed.
The strap H may be guided in its travel through and between the dies by means of a guide bar 9 secured to the slide '1) in line with the travelof the strap H, as shown in Figs. 2, 3 and 12; and bya guide9 attached to the slide C opposite the bar 9. This guide 9 is preferably attached to a rod 9 guided in a lock 9, attached to slide C and pressed forward by a spring 9. The object of this construction is to keep the strap H always'positioned against the guide 9. As the strap H may vary slightly in width, it is desirable to have a self-adjusting spring pressed guide like 9 to insure the certain positioning of the attached shank wires relatively to the dies in their movements therbetween. The guide 9 may have an overhanging lip 9 which serves to revent thestrap H arising thereover, and t e guide 9 may be provided with fingers 9 projecting over the strap for thev same purpose. These fingers prevent the strap rising or lifting with the upper dies during their upward mrurement.
The machine above described is an eflicicnt rapidly acting machine, and when the punching dies are used, will produce com plete perfect nails, with strap metal'or sheet metal heads. By omitting or removing the punching dies and their co-acti'ng dies the machine will produce a continuous nailing provided with a series of nailin can be very usefully employs or different purposes but which article is not claimed in this application.
Obviously many parts of the machine are capable of' variation or change Within the scope of this invention; the principal and strap or strip us Our essential features of the machine shown are several sets of dies, or their equivalents, and the means for operating the dies and parts in proper time are easily capable of variathe barbing rollers could be used to also feed the wire; or the dies could be used to barb the wire; the severing of the wire might be performed before or after the heading operation; and the shanks could be pointed before or after the attachment to the nailing strip; the. punching operation might also be per V formed by the dies which perform the head ing and swaging operations by a further movement thereof and a proper construction o the dies. All of these more or less obvichanges we consider within the scope of invention as they embody the essential features and steps thereof. I
Having described our invention what we claini as new and desire to secure by Letters Patent is v v 1. The combination with dies adapted to hold a wire with its end projecting, of an opposed die and a spring presser ring attached to said die adapted to cause the wire end to penetrate the head before the dies come together, and a header rod located within the die and presser ring.
2. The combination in a nail making ma chine of means for'feeding a metal strap, means for feeding a wire, means for causing the wire end to penetrate the strap, means for swaging the end of the wire to the strap, means for severing a nail shank from the wire, means for pointing the shank, and means for subsequently severing the end of the strap to which the wire shank is attached from the body of the strap.
3. In a nail machine the combination of means for feedin a metal strap, means for feeding awire, means for-causing the endof the wire to penetrate the strap, mechanism for swaging the wire to the strap, means for scv ring the wire, means for barbing the wire and means for subsequently severing the end of the strap to which the wire is secured from the body thereof.
4. In a nailmachine, the combination of means for feeding a sheet metal strap, means for feeding a'wire, means for causing the end of the wire to penetrate the strap, and mechanism for swaging the wire to the strap, and
means for severing the wire, means for concavo-convexing the part of the strap transfixed by the wire, and means for subsequently severing the end of the strap to which the severed piece of wire is'secured from the body thereof.
5. The combination in a roofing nail mak ing machine, of means for feeding a metal strap. meansfor feeding a wire, means for forcing the strap against the wire and causing the latter to perforate the stra means for severing a nail length from tie wire and pointing the severed end, and means for swaging the severed portion of the wire to the strap; with means for subsequently cutting the part of the strap to which the cut wire is attached from the body of the strap, thereby forming a complete nail.
6. The combination 1n a roofing nail making machine, of means for feeding a metal strap, means for feeding a wire, means for causing the wire to perforate the strap, means for severing the wire into a nail length and pointing the severed end, means for swaging the. severed portion of the wire to the strap, means for concavo-convexing the strap around the wire to form the nail head, and means for subsequently punching the nail head to which the cut wire is attached from the strap.
' 7. In a roofing nail machine, the combination of means for feeding a metal strap, means for presenting a severed piece of wire thereto, means for forcing the end of the severed wire through the strap, means for concavo-convexing the part of strap around the wire, means for swaging the end of the wire to the strap, and means for subsequently severing the portion of the strap to which the wire is secured from the body of the strap.
' 8. 'The combination of means for feeding a wire, means for barbing the wire, means for severing a nail length from the wire, pointing the same and holding it during the heading 9. In a nail machine, the combination ofmeans for feeding a wlre, dies ad acent the line of wire feed adapted to sever a nail length from the wire, point its end and hold it during the heading operation, means for feeding a metal strap over the end of the severed wire, dies adjacent theline of wire feed adapted to cause the severed wire to puncture thestrap and to head the ,wire above and below the strap, andmeans adjacent the line of strap feed for subsequently severing he nail head and attached shank from thestrap during the next shank-attaching operation,
10. In a roofing nail machine, the combination of means for feeding a wire, dies-adjacent the line of wire feed adapted to sever a nail length from the wire, point its end and hold it during the heading operation, means for feeding a metal strap over the end of the 1 low the strap, and to impart a concave-convex sha e to the nail head; with means adjacent t e line of feed of the metal strip for subsequently punching the nail head and attached wire shank from the strap.
11. The combination of the co-acting wire holding dies, each having a convex end with an opposed die having a concave end adapted to co-act with the holding dies to shape the nail head, and a header-rod within the concave ended die.
12. For the purposes described, opposed dies having respectively a concave and a convex end adapted to shapethe nail head with a presser ring, and a header rod in one of the dies, substantially as set forth.
13. A wire clamping die composed of opposite similar members adapted to clamp a wire between them, one of said members having'a beveled shearing edge and the other member having a beveled shearing lug adapted to sever the wire diagonally and thereby point it as the die is closed.
14; In combination, a wire clamping die composed of opposite similar members adapted to clamp a wire, one of said members having a beveled shearing edge and the other member having a beveled shearing lug adapted to diagonally sever the wire as the die is closed; .with a co-acting heading die adapted to head the severed wire while held by the first dies for the purpose described.
} 15. A wire pointing die composed of opposite similar'members, one of saidmembers having a recess and a shearing edge and its other member having a finger adapted to enter the recess, and a beveled shearing lng adapted to sever the wire as the die is closed.
16. In a nail making machine, the combi nation of opposite slides, wire cutting and pointing die members attached to adjacent ends of said slides, and adjacent punching die members also attached to adjacent ends of said slides, and means for moving the slides to open and close the dies; with means for feeding a wire, a head moving at rightangles to the slides, a punching die thereon adapted to cooperate with the punching die on the slides; a swaging die attached to said head cooperating with the wire clamping dies, and means for feeding a strap between the dies.
1.7. In a nail making machine, the combination of opposite slides, wire cutting and pointing die members attached to adjacent ends of said slides, and means for moving the sl des to open and close the dies; with means for feeding a wire; a head moving at rightmeans for moving the slides to open and close the 1 dies; with means for feeding a wire, a head moving at right-angles to the slides, a punching die thereon adapted to cooperate with the punching die on the slides, and a swaging die, presser-ring and header-rod attached to said head and cot'iperating with wire clanlping dicsysaid prcsser-ring being connected with said swaging die, and said header-rod being arranged in said ring and die, and means for feeding a strap between the dies.
, In testimony tha we claim the foregoing as our own, we allix our signatures in presence of two witnesses.
JOHN E. DODSON. WILLIAM E. WILEY. WILLIAM H. HART. 'itnesses for John E. Dobson:
Enwann l. ALLEN, FRANK 'l. (onmxo'ro. Witnesses for Win. E. Wiley and Wm. H. Hart:
Unannns H. SYLVESTER, DANIEL A. TAYLOR.
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