US911305A - Inverted drum for wiredrawing-machines. - Google Patents

Description

J. A. HOMON. INVERTED DRUM FOB. WIREDRAWING MACHINES.

APPLICATION FILED APB.. 18, 1906.

Patented Feb. 2, 1909.

2 SHEETS-SHEET 1.

l 'Zi/f7.2 65.4565.-

J. A. BURTON. Y INVERTBD DRUM FOR WIREDRAWING IMAGENES. APPLICATION FILED APR. 18, 1906. 911,305.l

'Patented Feb. 2, 1909.

2 SHEETS-SHEET 2.

UNITED STATES PATENT. oEEIoE.

JAMES A.

COMPANY', OFNEWEOEK'NJY;

HoRToN, or rnovInENcn'nnonE IsLANn, AssIGNon 'ro InooUoIs MACHINE 'EA coEPoRETroNoENEw YORK.

' INvnn'rEn nnnuron wmnnnAwINe- Macmnns Specication of Letters Patent.

Application filed Ap118, 1908. .Serial I\1o.,3 12287.`

To dlt whom it may concern:

Providence, in the countyof Providence and State of Rhode Island, have inventedcere* tain new and useful Improvements in In-, verted lDrums for Wiredrawing-.Machinea of which the following is a speciication.

This invention' relates toinverted wiredrawing drums, or those which discharge the wire downwardly from the Iinitialdrawing portion ofthe periphery of the drum, instead of upwardly as heretofore.

The invention has for its object toprovide for the regular downward discharge of the wire, wrap by Wrap, instead of its'lrreg'ular discharge in masses'or Groups orwraps- In drawing' wire infile usual manner, on an "npr-ight' drum, the accumulating coil :is forced upward by the on-coming.wire,.whih 'crowds' between'the "previous .'wrap' Tand fthe flange ofthe drum'. The .wire the initial portion of the' drum is held downby the increasing'weight of the-coil already' drawn, also by its own weight by gravity. Upright drums therefore must be made taperingy or inclined relatively to the axis of rotation, in order 'that the pull on tlie wire, due tothe draft at thedie, may lift'the increasin coil. In lan inverted drum, adapted to disc arge downwardly, the conditions 'are different.

- 'rhs-'coil lwill fanrby gravity' if mit sustained at or near`the initial portion of'the.

drum in order 'to`"prevent` `the oil from dropping from the drum. '-Heretofore it has been proposed to provide an 'inverted wiredrawmg drum discharging the wraps of wire downwardly. The drum ythusproposed has its periphery tapering flrom the flange .at its upper end, to its lower end. Thiscontinuous taperA provides for the frictional enfgagement of the wire with the drum, and

provides for the release of; the wire as it is forced downward; but experience has proved that with a taper, the wra s of wire do not drop from the drum sing y, but ingroups of indefinite number. These fallingfwith greater or less force according to their weight, causey the wire to be drawn at `suchan angle throu h the diethatitislliable ,to break or scratc 'the wire.

My vinvention has forv its obj ectto provide suchl frni'atien'of the periphery of'an infrom the drum, 'and will provide for a regu' verted drumasjwill prevent any irre lar or spasmodicdropping ofthe wraps o wire A lar dropping of the. wraps`, one by one, up on the coil.

The invention also' has for its obJect to the operation of tying or binding the coil.

provide for indicatingthe weight o f the'col of wire formed bythe lact-ionof an inverted drum. r.

To these and other related ends, thein-v' Vvention consists in .the improvements which I .will now proceed to describe and claim.

Of the accompanying drawings, forming apart .of'this specicationf-Figure 1 repretion shown in :IP-1g. '1. Fig.. 3 represents fa side view of a portion of thedrum and one of thejcoil-supporting arms. Fig. 4 repre-v sents a top view of the arm shown in Fig. 3. The same reference characters indicate the same parts in all the. gures.

In the drawings,.12 represents Ia portion lof .the frame .of :a wire-drawingmachine, to 'which "attached a" brcketfl projecting froin one fend-ioff'the frame.

' 14 represents'a driving-"shaft journaled in -bearingson the frame' 12and driven I'by powerf-imparted in anyV suitable way, the 'shaft 14 being'. provided with asmall gear or pinion 15" meshing with an intermediate'. near"16`, which meshes with'the drum-remt ing gear 17 affixed-.to an inverted drawingenable the leading end of the 'Wire forming a. completed` coil to be properly secured in-V 'The invention also has for its object tov Patented Feb. 2,* 1909. Y

'sents a vertical'sectional view, showing an Y drum 18. .The drum 18 is provided with' a hub 1 9 mounted to rotate on a fixed bearingV or Ahollow dead-stud 2O secured rigidly to the bracket 13'.v The drum is providedat its upper end with a ange 21, which projects outwardly from the initial or acting portion 22 of the periphery of the drum.

This initial portion which is hereinafter referred to as the wire-engaging seat is of uniform diameter from edge Ato edge, or in other words, is cylindrical and has no taper. `Its width'f is such that it is adapted to `hold a suiiicient number of wraps of wire to cause vthe friction 4of the .wire onthe drumto 'draw the 'Wire through the accompanying die" of the wire-drawing machine. In practice, -I findV that 'a 'width sufficient to receive from 'three' to .-'ve wraps is suiicient, although the `invention is not limited in this respect. I

regard it as important, however, that the initial portion-or wire engaging seat 22 be limited in width, so that not more wraps will be accumulated upon it than are required to cause the initial friction. Below the initial portion 22, the periphery of the drum is reduced in diameter, perfeably by one orcmore steps, as clearly shown in Fig.

' the periphery of the drum upon the yielding support hereinafter described. A

desire to emphasize the .distinction between the action of the initial portion 22 of the drum formed as described, and thev action of a drum'in which the entire periphery, including the initialportion, is tapered, the taper extending continuously from the flange to the lower end of the drum. lin such tapered drum, there is n`o provision for the disengagement of the wraps of wire single and regularly, one by one. 0n the other hand, it has been found inV practice that the wraps formed on a tapering drum are disengaged often in groups oiivarying numbers.. W'hen a group of wraps is disengaged and falls, it includes the topmost or initial wrap, and thus changes the angle at which the wire passes from the die to the drum,

.this change in angle often resulting in breakage of the wire. It will be seen that my limprovement above described prevents this diiiiculty, and insures an absolutely uniform direction of wire from the die to the drum. u Y

The wraps of wire disengaged from the drum are sustained in suitable proximity thereto, by a support which is yielding-ly mounted and is adapted to sustain the increasing' weight of the coil and gradually descend therewith suiiciently to keep the upper portion'of the coil depressed below the initial or acting portion of the drum. The said support as here shown is practically the same as that shown in my application for Letters Patent of the United States y filed June 15, 1903, Serial No. 161,566, and comprises a plurality of radiating arms 23 pivotcd at their inner ends at 24 to a spider 25, which is revolubly mounted on a vertical rodt 26 having at its upper portion a collar 27 bearing on a compressible spring 28 located in a casing 29, which is supported by the dead-stud 20. The arms 23 are therefore yieldingly supported by the spring 28, the spring yielding to permit the gradual descent of the arms as'the weight of the coil increases. The provisions for tripping the arms 23 to release the coil are the same as in the above-mentioned application, and include levers 30 pivotcd at their inner ends at 3l to a movable block 32, and pivotcd also at 33 to ears on the ,arms 23. Vhen the parts are in the position shown in Fig. l, the levers 30 support the arms 23 in their operative position; and when the levers 30 are swung downwardly, they cause the arms 23 to also swing downwardly, and discharge the coil accumulated therein. In the present invention, I have departed from the construction shown in the former application, by applying to the arms 23 latches 35 engaging pins 3G on the leveis 30, the latches being` held in engagement with said pins by springs 37. The object of these latches is to prevent the accidental tripping or downward swinging of the levers 30 by their own weight when there is no load on the arms-23. It sometinies happens that the jar of the machine -or other causes will cause the premature 'tripping ot' the arms 30. This isv prevented by the latches.v

38 33 represent guide-rods aiixed to the drum and projecting downwardly from its lower end, the said guide-rods being oil'set inwardly from the lower end of the drum and arranged so that collectively they support the inner surface of the coil that accumulates on the arms 23 when said arms are depressed below the drum. The formation of the coil on the drum is such that while the coil is confined against inward movement of the drum, its cross-section is oblong and the major axis of the oblong cross-section is vertical. l/Vhen the arms23 descend sufficiently to pei-mit the separation oi the body'of the coil from the body of the drum, the wraps of wire composing the coil re-arrange themselves, so that the coil has practically a circular cross-section. This involves an outward displacement of some .ot the wraps of the coil, and an inward displacement of other wraps, and a consequent contraction ot' the internal diameter of the coil. The guide-rods 38 are so located that they permit this contraction of the internal diameter of the coil, permitting the operator to tie or bind the wraps of the coil together while they are on the supportand in contact with the rods 3S. This provision for confining the coil in proper shape for binding before it is released from the support and guide-rods. is very important, because it saves a great deal of time and labor over what would be involved in ren'ioving the coil from the machine before binding it.

The guide-rods 3S are preferably arranged in pairs, connected at their lower ends by a neck 39. The rods thus arranged lOb lJu

are utilized as guides for the arms 23, the

ton 41 aihxed to the upper end of the rod 26.r

The upward movement of the rod by the spring is retarded by air confined between the piston41 and the upper end or head of the dash-pet.

The springV 28 andthe arms 23 supported i thereby constitute a weighing-mechanism,

which in this embodiment of my invention is 'completed and made available by Asuitable means-for indicating the weight of a co1l accumulated upon the arms 23. The said indicating means as here shown comprise `a movable indicating member, which may be simply a pin 42 affixed to therod 26 and projecting through a vertical slot in `the casing 29, and a graduated scale'on the ca sing, in position 'to 'coperate with the pin 42. To enable the leading end of thewire t'o be secured to the downwardly moving sup-4 port, I provide one of the arms 23 with an vise or.- clamp to en' automatically actin gage the said lea ing end, as shown in Fig. 3. This vise comprises a fixed jaw 43 on thersaid arm, anda movable jaw 44 piv Y oted on the pin 45 to the arml 2 3. The act.

ing edges ofjthe jaws 43 and 44 are preferably tangential -to the periphery of 4the drum, so that the wire passes at a tangent from the drum, between the jaws, as indicated by dotted lines in Fig. 3. The Aobject of this wire-securing device is' rst to enable the operator to control the leading end of the wire andsecure-it in its pro er place in the coil during'the operation o binding the coil; secondly, to' conveniently start the wire on the drum, theoperatorjirst 4drawing out from the die by' other means, la short length'of wire, and then attachingthe end by the clamp.4

I claim: Y v

'1. In a'wire drawing machine, an 4 inverted drum` adapted toV discharge its coil downwardly, and a-coil 'support movable downwardly with the increasing coil, and

adapted tol` engage the leading end of the wire, said drum 4havin a cylindrical wireengaging seat limited m widthto that required for operative frictional engagement with the wire, whereby the wraps of wire are caused to fall independently one by one .upon the coil support.

2. In a wire. drawing machine, an inlverted drum adapted to discharge its coil downwardly, and ,a coil'support movable downwardly with the increasing coil, and means carried by the-coil-support for engaging the leading end of. the wire, 'said drum having a cylindrical wire-engaging seat, and limited in width to that required for operative frictional engagement with the wire, whereby the wraps of wire are caused to fallindependently .one by one upon the coil support. y

Y 3. A wire drawing drum mounted on a substantially vertical axis, and adaptedto discharge its coil downwardly, said drum having an initial wire-engaging seat of uniform diameter from edge to edge and lima ited in width to that required for operative fritional engagement with the wire. Y

4. A wire drawing drum mounted on a substantially vertical axis and adapted to discharge its coil downwardly, said drum having its periphery jtlormedA in steps of dif` ferent diameters, the initial step lbeing of uniformjdiameter from edge to edge, and

limited in width to that required for operative -rictional engagement with the wire.'

-5. A wire-drawing drum adapted todischarge `its coil. downward, and coilguides projecting .downwardly from the discharg-v mg end of the drum, and offset inwardly from the periphery of the drum to permit the contraction of the'inner diameter of the inished coil, and the 4tying of the same in compact form, said guides being` parallel Y with the axis of 'the drum, whereby the coil is given a uniform diameter from end to end. In testimony whereof I have aiixed my signature, in presence of two witnesses.

JAMES AynoRToN.

Witnesses:. vy C. F. BROWN,

E. Ba'rcrmmnn..

Images