US1258706A - Wire-feeding mechanism. - Google Patents

Description

c. A. FORATH.

WIRE FEEDING MECHANISM. APPucmou ElLED. JUNE 4.1917.

1,258,706. Patented Max:124, 191s.

.3'SHEETS-SHEET ,Wlomgys C. A. PORATH.

WIRE FEEDING MECHANISM. APPLICATION men mu: 4. 11911.

Patented Mar. 12, 1918.

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(arl rail} C, A. PORATH. WIRE FEEDING MECHANISM.

APPLICATION FILED JUNE 4. I917- 1;,258,706. Patented Mar.12,1918

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CARL A. PORATH, F KOKOMO,'I1\TDIANA.

WIRE-FEEDING MECHANISM.

Application filed June 4, 1917. eel-m1 No. 172,667.

To all whom it may concern:

Be it known that LCARL A. PORATH, a

citizen of the United States, and a resident of Kokomo, county of Howard and State of Indiana, have invented. a certain new and useful 'Wire-Feeding Mechanism; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings,'in which like letters refer to like parts.

movement of the wire will result. A. further feature of the invention is the provision of movable and yielding means whereby a constant feed will be given the wire even though a knot or enlargement in the wire is encountered, and a further feature of the invention is the provision of means for holding the feeding rolls in juxtaposition to each other.

The full nature of. the invention will be understood from the accompanying drawings and the following description and claims: t

Figure 1 is a plan view of the machine. Fig. 2 is a side view of the machine. F ig. 3 is a longitudinal section on the line 3-3 of Fig. 1. Fig. 4 is a transverse section on the line 44 of Fig. 1. Fig. 5 is a section on the line 5-5 of Fig. 4. Fig. 6 is a section on the line 6+6 of Fig. 5. Fig. 7 is a section on the line 7-7 of Fig. 5. Fig. 8 is 'a section on the line 8-8 of Fig. 1.

Similar letters of reference are used to or frame 10 on which a housing 11 for the mechanism is secured.

The 'mechanism is driven by a pulley 13 mounted on a shaft 14 and the pulley 13 engages the shaft'14 through a clutch member 15 of any acceptable construction. i v Y Mounted on the shaft 14 inside the housing 11 is a driving pinion 16 which engages a driven gear 17 mounted on a shaft 18, said shaft having its bearing in -the housing of th m chi e extend ng n y pa y through the width of the machine. on the inner end of said shaft there is mounted a gear19 which meshes with a pair of gears 20 and 21. which are mounted on the shafts f 22 and 23. The gears 20 a'nd'21 engage the gears 24 and 25 which are mounted on shafts 26 and'27. These shafts 22 and 23 and 26 and 27 extend through the housing of the machine and at the outer end thereof are'mounted the feed rolls 28. Thedirection of rotation of the various parts is indicated by the arrows in Fig. 2. The feeding of the wire 29 is done by the feed rolls 28 the, wire being fed through an eyelet 30 at the left hand part ofthe machine'and in between the two pairs of feed rolls into the coiling mechanism.

For operating the coiling device'the fol-, lowing mechanism is provided: 2

A beveled "gear .31 is secured to the shaft 14 and meshes with a pinion '32 mounted on a shaft 33, said shaft being supported in bearings 34 which are secured tothe hous: m sp i'o'cket wheel :35 mounted on the shaft 33. An'idler'sprocket 36 mountfed'on a pin 37 secured toa bearing38 is secured to the housing. The coiling mechanism is mounted 1n bearings 40 secured to'the sldeof the housing 11. Said coilingmechanism is ro- Between the bearings 34 there is a Specification of Letters Patent. Patented B131. 12, 1918. V

tated by a chain 41 which engages a sprocket- 42 on the coiling mechanism. The coiling mechanism consists of a tubular portion 43 to which the sprocket 42 is secured or may be ntegrahas shown, and ahead 44 which is secured to one end of'the tubular portion 43. The inside of. the tubular portion is of sufiicient diameter to permit the passage of a spiral coil of wire of the size desired.

The head 44' has at theinner end thereof an eyelet 45 and extending partly through the tubular opening are coiling pins 46 and situated centrally and at right anglesof the coilingpins is a hole 47 in which an adjusting roller 48 is mounted in the jaw's49 of an adjusting bolt 50.

To start the wire through the coiling mechanism the nut on the adjusting bolt is. 'loosened'and the wire pushed through the feed rolls through the eyelet 45 and past the inner portion of the roll 48, thence'past the rear stud 46 into the unimpeded portion of the coiling mechanism. Then the nut on the adjusting stud is tightened so that the desired depth of spiral is secured and the machine put in operation and as the wire is fed through the feed rolls the ceiling mechanism rotates and at the same time the wire is fed through and the obvious result will be a spirally formed wire.

To guard against slippage of the wire in feeding, a uniform tension is maintained on the feed rolls. This is accomplished by means of an adjustable cap 55 which has a radial projection 56 extending into a likewise radlal depression 57 of the housing.

On the top of the adjustable cap 55 there is a pivot plate '59 the underside of which is radially formed and this said pivotplate is secured in place by means of a machine screw-60 extending downwardly through the adjusting cap 55 into theIhousing 11. There is a'hole 61 in the adjusting cap and this hole is larger in .diameterthan the machine screw 60. Therefore, a certain amount of motion is providedfor at this point. At the outer ends mary adj ustmentof the tension on the pressure rolls may be secured. As the coiled wire leaves the tubular'member 43 it passes into a chute 413 andis guided by said chute into a cutting machine, but as saidmachine forms no part of this invention it .is not shown.

The object in providing the chain drive 41 is that it is necessary torhave every coil bent exactly alike. as .these wires when used as stays, are cut: in lengths and bent upon themselves and unless the coils are absolutely uniform they will not properly register when bent upon themselves, rendering the stay absolutely useless, .thus entailing considerable loss.

I am aware that machines for coiling wires are in existence but said machines usebelts for driving the coiling mechanism which sometimes slip and consequently the coils are not all. uniform while byusing a chain drive, which is positive, the coils-must be uniform.

' pe'ns that a thick place will be encountered Afurther important feature ofmy device is the means fOr maintaining a proper .ten-

sion on the .feed rolls. It sometimes hapin the wire thus evating the feed rolls to a greater degree than ordinary, which, if no provision Was made to prevent it, would result in anuneven feed-of the wire-into the bending mechanism.

By. :providing the rocking adjusting cap as shown, should one of the rollers be elevated by an uneven place in the wire, a greater pressure will be directed against the other "roll and thus prevent any possibility of the wire slipping between the rolls and giving an absolutely uniform feed.

The invention claimed .is: r

1. In a wire feeding mechanism, the-combination with a frame shafts mounted in said frame in pairs, one pair above the other, the upper pair being vertically movable, and feed rollers carried at one end of :said shafts, of an adjustable cap of 'suflivcient length to extend across both of the upper shafts, a radial projection at the longitudinal center of said cap,said framehavinga radial depression to receivesaidprojection, a screw extending through an opening in said adjustable cap and through said radial projection, said opening beinglarger than the diameter of the screw, a pivotlpla te above and resting upon the cap through which said. bolt extends, the under face of said plate being beveled whereby the Cap may having rocking movement, set screws extending through said cap and in engagement with the hearings in the movable shafts, and yielding means for holding said screws against said bearings undertens'ion.

2. In a wire feeding mechanism, pairs of shafts one pair above the other, the Upper pair being adjustable, feedrollers on said l shafts, an adjustable cap above the adjustable shafts, a housing through which. said shafts extend, said housing haVingQa radial depression, a radial projection on said adjustable cap adapted to enter said depression,.a binding screw extending through said cap nd projection and'into the housing, the openingthrou'gh said cap being larger than said screw, and a pivot plate between the head ofzthe screw and cap,-said platelhav'ing a beveled underface whereby the cap .may have yielding movement, and means carried by theadjusta'ble cap adapted to hold the upper feeding rollers in juxtaposition tothe lower feeding rollers.

' '3. In a wire feeding mechanism, thecombination with a frame, shafts mounted in :pairs 1n saidframe, one pair above theother,

the upperpair'being movable, and feed roll- :ers carried at one end of said shafts, :of

means to yieldingly hold theupper feed rollers against the lower feed rollers under tension, comprising an adjustable cap ha-v- ,inga radial projection thereon, saidframe hav ng a radlal depresslon to receive sa d projection, a I screw extending through an 'openingfin, said adjustable cap, said opening being larger than the diameter of said underface of which is beveled whereby.

5 said cap may have rocking movement, studs carried by said frame and projecting through said adjustable cap, means carried byv the studs to direct downward pressure on the ends ofthe cap and adjustable means I for engaging the pair of the movable shafts. 10

In witness whereof I have hereunto aflixed my signature.

CARL A. PORATH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents,

Washington, D. 0.

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