US1613170A - Wire-shaping apparatus - Google Patents

Description

`flan. 4, `1927. 1,613,170

G. G. HENDERSON WIRE SHAPING APPARATUS Jan. 4, 1927. 1,613,170

G. G. HENDERSON WIRE SHAPING APPARATUS Filed June 24, 1926 H -M L QN W Om.

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W/TNESSELS Patented Jan. 4, 1927.

Urrea islam orion.

GEORGE G. HENDERSON, DEGLEASED, LATE 0F SE'WCKLEY, PENNSYLVANIA; :BY MARY IP. HENDERSON, EXEGUTRII., OF SEVCKLEY, PENNSYLVANIA.

WIBE-SHAPNG APEARATUS.

Application filed June 2li, 1926.

The invention relates to apparatus for shaping wire and finds practical applica tion in shaping from wire kforms or frames for stretching stockings.

In the accompanying drawings Fig. ll is a view in plan of a machine in which the invention is embodied. Figs. Il and lll. are views to larger scale, Fig. H in vertical and longitudinal section and Fig. lll in plan of a portion of the machine. Figs. I and HI show certain moving parts in alternate extreme positions` of movement. Fig. lV is afragmentary view in vertical and transverse section, on the plane indicated at lif- IV, Fig. Ill. Fig. V is a view in elevation of the article produced by the machine in its operation. j

W'ith attention upon Fig. V it will be understood that t-he stocking form or frame consists of a loop of wire of proper shape and size to be introduced Within a freshly washed and still damp stocking and to sustain the stocking in distended condition and so to prevent shrinkage during drying. lt is desirable that this loop at its outer end be broken or divided, as indicated at a, in order that it may be collapsed for insertion within a stocking; and ordinarily the length of wire shaped as shown in F ig. V is at one end provided with a rigidly borne ferrule, into which, after the form has been introduced within a stocking, the opposite end maybe sprung, that the form may continue in expanded condition, to serve its intended purpose. The form as it is shown in Fig. V lacks such a ferrule; for the ferruleforms no part ofthe present invention, and for present purposes the disclosure is clearer in the showing of the form so far incomplete as to lack the ferrule alluded to. lt is however important to remark that in the bending of the wire t0 the shape shown in F ig. l]

the opposite ends must be turned to axial alignment, and the means for effecting precisely that shaping of the wire involve invention, as hereinafter set forth. l

In Fig. HI will be found a set of wire bending dies. These consist of block l and jaws 2 and 3. The block l is of such shape and size that a length of wire may be crushed upon its periphery to constitute the article of Fig. V. The jaws 2 and 8 are mounted alternately to open and to close upon block l, and by so closing to crush a length of wire as described. Fig.v Hl shows Serial No. 118,264.

A horizontally extending plate 6 reoiprocales horizontally in ways 7 which engage its opposite parallel edges, and reciprocation is imparted from a rotating crank shaft e through a connecting rod 9. Shaft 8 may be rotated in any suitable manner, and in l means for rotating by hand are, by way of example, indicated..`

lhe block l is rigidly mounted upon slide l5; it extends horizontally; it is spaced at a convenient height above the upper surface of slide t3; and slide (lis conveniently recessed immediately beneath block l, as indicated at 60, that the articles as they are formed may be delivered from the machine by gravity. Y

lhe block l, it will be remarked, is nonsynnnetrical; its opposite sides, as it is seen in place upon the slide 6, are unlike; and the jaws 2 and 3 which engage it are correspondingly unlike in the conliguration of their work-engaging faces. l With this characteristic'in mind, it will be remarked of block l that 'it is arranged approximately upon strains which shape the wire shall be diS- Y tributed most effectively throughout the length of the wire.

Jaws 2 and are pivoted incslide 6 on a common pivot, adjacent the toe end of block l. Adjacent their remote ends these jawsv are pivoted to arms 2O and 30 which in turn are pivoted tothe plates which constitute ways ,7. lhe pivoting to the ways 7 is effected through blocks Owhich are bolted to but adjustable in their positions upon` ways 7, to the end' that when the parts have been assembled, minute adjustment may be made in limiting the range of relative move ment of operatingparts and in varying and distributing the intensity of the crushing strains. 'lhe working faces of jaws 2 and 3 correspond in shape to the opposite sides ledges 2l, 22, `and'l, for sustaining a newly introduced wire in position tor operation.

Comparison of Figs. I and lll will serve toillustrate the 4general mode of operation, rlhe slide 6 reciprocates between these.. two extreme positions and in so doing alternately closes the jaws 2 and 3 uponthe block l and opens them again. TWhen the jaws are in the open position shown in- Fig,lll a Vstraight and accurately cut length'fw oit wire is tedI horizontally and transversely between block l and the open jaws Zand 3. lt Ymay be accurately positioned' by abut-ment at one end upon a stop 7l setv on. one otv the ways T, and when brought toV position it may bev lett sustained in'positioii, resting upon the ledges 2l, 22,

ailid'l;4 This initi'a-l'position is indicated in Fig.V lll'. Leit-to-right movement of' slide ,6 thenl brings the parts to the positions shjown lin Fig'. l, in which the ljaws 2 and 3 have closedupon the sides o' block l and in so doinghave crushed thelength o1 wire between themeeting faces and have strained 'it beyond" its limit of elasticity and have Vmust `stand 'away 'from block l' at an interval,

and `provide means for clamping the infed wire w at'its middle part, while still atits ends the wire rests on ledges 2l 'and 3l. This clamp is thej aw 4, already mentioned, lt is mountedv upon slide 6' and is itself adapted to slide within a limited rangelongitudinally upon the slide 6i Normally itis held remote'troni cooperation with block l, that is to the right, Figs. I, Il; and lll, by the tension ota spi'iii,f ;-4O. From suoli retracted position the clamp 4 is advanced to clamp the length ofwireto the tip end of 'block lby the thrust of a cam disk 90, in which the connecting rod 9 conveniently terminates and by which it is pivotedto slide 6. The cam'` dislis so particularly shaped-that in the course ot revolution of shaft S the point otengagemeiitof the spring-backed jaw 4 upon thecam disk 90 advances 'from the surface-91 otless radius to the surface U2 ot' maximum radius. As this point of engagement advances to the surface of maximum radins, itwillbe perceived-that jaw 4 will befadvanced against spring tension toward block l.' The particular proportions are such-that, beginning with the parts in the Y positonwshown in Fig; Hl, the jaw 4 moves forward to clamp ,the length of wire w at its inid-part against the tip of bloclr'l just atter slideV 6 begins its let-toright movement;

andity continuesin such advancedposition.

until the maximum-squeezeis past, that is until the slide comes approximately to the positionshown in Fig. l. lt then promptly recedes and allows the then finished article to escape.

Allusion has just been made, to the fact that the slide 6 `advances from lett to right to andbeyond thel point where the crushing his will beunder- Y strain is. at a maximum. stood onvconsidering l, inwhich-thcslide 6 Vis shown atthe limit o'A its leftfto right stroke; and when in that position it willbe observed ofthe; arms 2O and 30 'that they. have swu-ngto `andfslightly beyond aV position of alignment; and by as much as they have passed beyond a position of alignment, they crushing` strain withiwliiclrv they compress the wiieupon the-*edges ot block' 1 is eased.

Mention has been made ofthe necessity of' bringing the ends ot the wire in the finished article to axial alignment. The laterallyV swinging jaws 2 and 3 are incapable of exerting-pressure properly directed topaccomplish this. But'in the vfurther advance of slide 6l beyond the. point where armsQO Vand 30 @are-- ina-lignment, and at a moment-when -in the operation ot thenniachine' theiother wireshaping strains are relaxed, the jaw 5l advancesand cooperating with the remote end, l

the lett-handend of blockl l, shapes the two ends or' the wire Vupon it, so that in the -nnyished article the two ends are axiallyv aligned.-

JawY 5 is mounted orvlongitudinal reci-procation upon slide 6, as will be clearly` apparent on comparingFigs.y Il, IH, and IVI' A leverV 50 pivotedin bracketsl which" depend from the under-sideof slide 6 engages jaw 5; A stop 5l,- iigid-ly borne Aupon'a lined support, as upon-a bridge inemberf,`A

betweenw'ays 7, but ini-nutely adjustabledIrV its position, is arranged in-thepath oit-'ado stopl V5l is suoli that, as the slide Gladvances beyond the point ofinaximumvstrain imparted by-jaws 2 and 3.1the swingingiot le-` ver 50' byabntment` or stop4 5l causes-jawV 5 'to' advance, and, engagingl the ends `of the. wire,I to crush them vupon the end offblock;V

At that moment in the operation the crushing strains ot jaws 2Y and 3 are, as-has been said, somewhat eased landaccordingly the'wire is more freelyVv responsive tothe strains exerted upon it by jaw 5. Iirsiich= manner the ends-of thewire are shaped to axial alignment.' A

As slide makes its right-to-'leftv stroke;

vaiice oftheV power arm or" leverv 50,' as its. is Y borne by tlieslide 6. The minutehpositiony jaw 4 having already-receded, jaw''begins torecede, then in turn jaws Qand 3 recede.`

The shaped article thenA eases somewhat from the close contact into which it was crushed upon the face of block 1. In con,- sequence of such recession the article loosens and falls away, and as the parts come again jaws, said means constructed and arranged to ease the crushing pressure of the aforesaid jaws upon the block before receding movement begins, and a jaw operating in sequence when the aforesaid oppositely moving jaws have eased their crushing pressure on the block, adapted to engage the ends of a length of wire brought to adjacent positions by the operation of the pair of jaws iirst named and to shape the engaged ends upon the block.

2. In apparatus for shaping wire the combination of a pair of arms rotatable upon iixed pivots, a block reciproeable between said arms, a pair o' jaws pivoted at one end each to one oi' said arms and at the other end to a. pivot having fixed position relatively to said block, and adapted as the block reciprocates to close upon vsaid block from oppo-l site sides, the said arms in the range of block reciprocation coming to and passing beyond alignment, and a jaw closing upon said block as the block passes beyond the position in which said arms are in alignment.

3. InV apparatus for shaping a length of wire to the form of a loop with ends adjacent and in axial alignment one with another, the combination of a pair of fixed i pivots, a pair of arms swinging on said iivots, Y a slide reciprocable between said pivots, a forming block borne by said slide, a pair of orining jaws pivoted each at one Vend to said slide and at the other end to one of said arms, the said slide being reciproable to and beyond a point where said jaws close from opposite sides upon said form with said swinging arms in alignment, a jaw adapted to close upon said block at one end while the pair of jaws irst named continues open and adapted to openas said slide passes beyond the position above mentioned with said swinging arms in alignment, and a Jfourth jaw adapted to close upon said block at the opposite end as the saidslide passes beyond the said position of alignment of the swinging arms.

In testimony whereof I have hereunto set my hand. j

MARY?. HENDERSON, Y

Emeoutm'm of George @.Hendersomdeceased.

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