US1242522A - Wire-nail machine. - Google Patents

Description

W. F. & H. 0. CHRISTISON.

WIRE NAIL MACHINE. APPLICATION FILED DE'c. I6. 191e.

Patented ct. 9, 1917. 3 sHEETs-SHEET'I W. F. & H. O. CHRISTISON.

WIRE NAILMAcHrNr-I.

APPLICATION FILED DEC. Hi. 1916.

1 ,242,522.1 Patented Oct. 9, 1917.

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W. F. II II. 0. CHRISIISON. WIRE III/IIL IIIIAcIIIIIIE.y APPLICATION FILE'D Dec. I6. Isls.

Patented Oct. 9, 1917.

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WILLIAM F. CIEIBJS'IISO .AND I-IADIIZI'ES.` O. CHRIVS'IISON, OF KOKOMO, INDI-ANA.

WIRE-NAIL MACHINE.

To aZZ lwhom z' may concern:

Be it known that we, WILLIAM F. CHRISTI- soN and HADLEY O. Ciamis'rrsorngcitizens of the United States, residing at Kokomo, in the county of Howard and State of Indiana, have invented certainnew and useful Improvements in VVire-Nail Machines,y

of which the following is a specication.

The object of this invention is to simplify the construction of a wire-nail making machine by reducing the number of parts, making it operative with less friction and wear, less expensive to construct and afterward to maintain and easier to operate, without decreasing the volume vor quality of the output from it.

We accomplish the above' and other obi jects which will hereinafter appear, by the mechanism illustrated in the accompanying drawings, in which j Figure l is a top plan view of our invention showing the parts positioned to point and cut off an otherwise finished nail. Fig. 2 isa vertical section on the line 2-2 of Fig.-1 and Fig. 3 is aver-tical section on the line 3*-3 of Fig. 1'.

Like characters of reference indicate likeV parts throughout the several views of the drawings. 'Y

The table or plate 4, its legs or standards 5, and the hangers 6, secured t0 the under- 10 and loose pulley 11. At the other endy of the shaft is a crank-wheel 12 having a diametrical slideway in which a crank-pin 13 is adjustably held, the adjustment being toward or from the' aXis of rotation of the shaft to vary the length of the crank-arm. Fulcrumed to the topV of the `table is a lever 14, the free end of which is connected by aV pitman rod 15" with trunnions on a sleeve 15 on thecrjank-pin 18. A suitably eXpanded portion of the lever forms a support for a pair of wire-grippingl wheels i 16,v 16, mounted in the headsof rods 17, 17, oblique to each other as shown in Fig. 1. The lever` has perforated ears 18, 18, which'guide the rods17. Springs 19, 19, wrapped around the respective rods and bearing against the .Specification of Letters Patent.

head at one end and ear at the other force Patented oet. e, 1er?.-

Application led December 16, 1916. Serial No. 137,438.

the wheels 16, 16, together with an elastic gripping tension. A; wire 20, from which the nails produced by the machine are made,

is gripped between the pair of wheels when the lever is swung toward the shaft 8, and

the wheels automatically release their grip when'the lever swings the Vother way.`

As the wire 2O isusually :fed to the machine from a roundv coil, itis firstl straight# ened by passing between two rows of wheels 21 which contact the wire in the usual' manner for straightening purposes.

The wire 'is fed through a'suitable hole in an anvil 22, supported `by the table `on the opposite side of lever 14 from wheels 21 by engagement between the gripping wheels 16 at each oscillation of the lever., The an'- vil has a vertical dove tailgroove on its side remoteV from lever 14 in which a'block 23 is formed with'a dove tail'groove at rightl angles 'to the groove in the anvil in which the block is' seated.' A pair of clamping mem'- bers 24 and 25 is seated in the groove of the block. The member' 24 isiixed while the other member'25 has a reciprocating move-v y ment whereby it is moved-to clamp the wire 20 against the member 24 while a nail-head is being formed. The two membersV 24 'and 25 securely hold the wire from slipping while'vth'e head ofthe nail is made by full-` ing the end of the wire in a shaping cavity in the ,members at the joint' between them, by the pressure ofa reciprocating hammer 26. Clamping pressure is applied to the outer end of the member 25, through apushbar 27,"on'e end of which 'isseated in a socket in the end of member 25, and the other end bears against and is fastened to the short arm of a pivoted lever 28, pivoted at 29 to the table 4. Withdrawal of 'the member'25 is by a wire 30 connecting the byvwhich the wire is maintained in a taut condition. The lever 28 is normally moved l Avby a spring'32 in 'a direction to draw the member'25 out of clamping engagement with the wire 20; The -endof the long arm of lever 28 carries a friction wheel 33 which is also held by the tension of spring 32 against the cam-shaped side of a dish 34 mounted on the shaft 8. The lcw place occurs on the cain where it is desired to release the lever 28 and consequently the clampingH pressure of'member 25 against the wire 20. while the latter' is being fed the length of a nail. rlhe high place occurs while the nail is being pointed and cut off and a head for-med onl the new end of the wire from which the nail was cut.

The hammer 26 which fulls the metal to form the head of the nail is removably seated ciprocate on diametrically opposite sides of the wire 20. The point is formed by the shapes of the cutting ends of the two chisels which pinch oif the wire between them. The chisels are mounted in heads 39, in hori- Zontal dove tail grooves therein and are adjusted by set screws 40. rlhe heads are removably mounted in slots in the upper ends of vertical levers 4l, 41, as shown and are held there by removable cap plates which enable shiins `to be inserted or removedto raise Yor lower the chisels. The levers 4l, 41,- are pivoted on rods 42, 42, which are supported by the hangers 6, 6. The levers are separated from each other as shown to provide unobstructed room for the nail before it is cut o and for its discharge afterward. the table and are connected at their lowerl ends by a spring-tie 44.. The nail, after it is cut 0E, drops by gravity through the slot 43, and is carried away by any usual and suitable means, not shown.

The levers 41, 4l, are moved toward each other to cause their chisels 38, 38, to point and sever the nail by wedges 45, 45, respectively. rlhese wedges slide in ways 46 on the table 4, and are reciprocated therein Yby y' connection through rods 47 having suitable openings, with eccentrics 48, on shaft 8. To reduce thefriction between the levers and their wedges we prefer tc interpose friction rollers v49, and because the swingingmovement of 'the levers would impart a lateral or skidding movement to the rollers if the latter were mounted on thefo'rmer, weprefer to vmount the rollers in heads 51 on the endsof bars 50, resting upon the table and pivoted lat ends remote from the heads to the table. The heads 51 may bear against the levers 4l, directly, but we prefer to interpose pin-bearings as shown in Fig. 2. As

there shown, socketsl are provided in heads claims. *0n the contrary we contemplate all `properA changes inform, construction and They extend lthrough a slot 43 vin said wheels having oscillatory movement.

51, in which pins 54 are pivoted at one end and the other bears against the adjacent lever entering indents therein to keep them positioned;

While we' have described our invention with more or less ininuteness as regards details 'of construction and arrangementand as beingwembodied in certain precise forms, we do not desire to be limited thereto unduly or any more than is pointed out in the arrangement, "the omission of immaterial elements and the substitution of equivalents as circumstancesinay suggestoras necessity may renderexpedient. f

We claim v l. ln a wire nail machine, means forpoint-`VA`V ing and cutting off the-nail, c omprisinga., pair of pivotedlever'sswinging in ka vertical plane at right angles to vthe wire, lchisels vcarried bythe levers, reciprocating wedge meansrto swing the levers toward thewire,

a pair of bars o ne foreach of said swing;

ing levers, each bar having^, a head, said head being assembled between `the lever and an adjacent wedge, said bar beingpi vote l, l and a friction rollerinthe head contacting-. the wedge.

2- n a Wire mail machine, means fer pointing and cutting offnthe nail -co'mprising a pair of pivoted levers swinging yin a vertical.A

plane at right anglesfto the wire, chisel s carried bythe levers, `horizontally recipro- @time Wedge .means tQsvnsthe-levers to.- .lo

ward the wire, a roller to reduce the, anti friction between `each wedge and adjacent lever, and means for movably supporting the roller independently of said wedge andv lever.

3. ln a wire nail machine, arotatingshaft an anvil, wire feeding means, wire clamping vmeans, and nail-head forming means, al1

of said means operated from said shaft, in

combination with a pair of pivotedj levers'. 110

swinging in a vertical plane at right angles to the wire, 'elastic means tonormally separate the upper ends ofzthe levers, chisels -carried' by the levers, horizontal guides.,

wedges ldirected by said guides to move the upper ends of the levers toward each other,

means comprising eccentrics oirsaid shaft for reciprocating the wedges and anti-friction wheels between the wedges and levers 4. ln a wire nail machine, L rotating shaft,

an anvil, wire feeding means, wire clamping means, and nail-head forming means, all of said means operated from said shaft, in

combination with a pair of pivoted levers swinging in planes at.,rightanglestofthat Vby said guides to movetheupper ends` 0,.-.130

the levers toward each other, means comour hands and seals at Kokomo, Indiana, prsng eocentrics on said shaft for reciprothis 7 day of December, A. D. one thou- 10 eating the wedges, a head between each sand nine hundred and sixteen.

wedge and lever, said head havngoscilla- WILLIAM F. GHRISTISON. [1.. s.] 5 tory movement, an anti-friction wheel in HADLEY 0. OERISTISON. [L.s.]

the head contacting the wedge and pin Witnesses: bearings between the head and lever. CHARLES G. WEGER, In witness whereof, we have hereunto set FRANK D. SHUFELT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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