US106720A - Improvement in machines for bending wire screw-eyes - Google Patents

Description

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Letters Patent No.106,720, dated-August 23, 187D.

IMPRo'vEMENT IN MACHINES PoR ENDING' WIRE SCREW-EYES.

The Schedule :eren-ed to in these Letters Ptent and making part of the same.

To all whom it may concern Beit known thatI I, NOAH 0.1EnaY, of Chester, iu the county of Middlesexand State 0f Connecticut, have invented a new and useful Machine for Bending and Shaping Wire, and other stock, ior various articles of manufacture; and I do hereby declare that the following is a full,clear,'and exact description ot' the construction and operationI of the same, reference being had to the annexed drawings making part of this specification, in which'- Figure l is a front elevation, and

Figure 2, a rear elevation.

The drawings represent my machine as it is arranged for shaping wire for an article known as scre\v,eyes, by cutting the wire into pieces of a given length, and forming upon the end ot' each piece a circular eye.

A, in fig. 1, represents the frame, which is furnished with suitable elevations to support the several worklng parts.

B,vthe driving-shaft, which is made to run in thcv ment of the tongs'.

C, a holding-rod, which presses the wire against the sgindard, and holds it thereto before and after it is cut o c, a cam, which, infconnection with the spring c', operates the holding rod.

D and D', a pairof jaws, which bend the eye around the standard.

d and d, .two arms, which, with the two 'springsd2 d, operate the jaws;

I, a rest for the jaws.

l represents the position of a' guide for the jaws to' be attached to the rest l.

o, a cutter attached to the upper jaw tol separate E, a slide, to which the jaws are attached.

e e, guides of the slide.

o', a earn which moves the slide toward the standard.

R, a scraper, which throws the eye from the standard after it is bent.

r, a cam which operates the rod to which the scraper is attached. v

c" represents a spring which draws back theslide E after'it has been thrown forward by the cam e'.

pivoted to the top of post 4. v

frf, a spring which draws the scraper back' after it 'has been thrown forwardby the cam fr. f

I construct the .frame ot' my lmachin/e of iron, and provide the driving-shaft with a balance-wheel to insure steady motion, and drive it with a belt and `pulley. I couple the feeding-tongs J to close on the wire byA spreading the handles, and provide the jaws ofthe same with a circular groove where the wire passes between them, to steady the wire, and prevent it't'rom inching, or from being flattened.

The inner handle of the tongs is attached to post l by a pivot, and the end of the same so bent and shaped by cutting out a piece on the lower side that the extensionlef't on the upper side will ride the cani j, and the lower part follow the side of the cam. I make the outer handle follow the side of the cam only, y'and bevel the cam to enable the'ha'ridlc to slip out on the side, so that the cam shall close'. the tongs on the wire before it raises the handles.

The feed-gauge K consists of aplate ot' steel, bent outwardly on the lower ,end to a right angle. It is attached to the frame by a bolt passed through a slot in the vertical part, which allows'it to be adj usted with the horizontal part extending over the tongs, and limiting their upward movement.

As the feed-gauge .is raised or lowered, a longer or shorter length of wire will be passed down by the tongs. 'lhe gauge t" is similar in construction to the feed-gauge, but as it constitutes a. part of the means for cutting oli' the wire which passes through an orilicc in the horizontal part of it, I temper this part, andattach and adjust the gauge in a recess provided for it iu the trame, by which it is backed and prevented from moving when the wire is separated by the cutter o.

. The holding-rod() passes through square openings in post 2 and 3, to which it isfitted. v'The bend represented iu the e'ud towardthe standard enables the rod to spring a little, and to further guard it against inarring the wire, and to enable it to hold thc wire'in a vertical position, I make aslight groove for the wire to enter, and furnish the end toward the earn with a slide and set-screw, (not represented in the drawings,) byI which the holding-rod may be lengthened or shortcned to. accurately adjust itl to dilerent kinds of" I adjust the bending-jaws D Dby pieces of leather held on'each or either end of the rest l, by the guide to be attached-thereto, as indicated at l', cutting snitableopenings in the pieces, and slipping them down or up on the guide, as they are required for the upper or lower jaw. l make a groove in the beak ofthe jaws, where they come in contact with the wire, to guide R1, a rod to which the scraper ris attached. It is the wire around the standard, and to prevent it from being iattened by the jaws.

The arm d raises the upper level' of the jaws, and passes inside of the lower lever without contact, and the arm :l1 presses down the lower lever, and passes outside the upper. y

The standard t' is fitte-d t-o a slightly tapering socket extending through the fi'alne'finto which it is driven so as to bc firmly held by friction.

'lhe scraper R is attached to the rod R by a pin, which allows it sucient play to move easily upon the standard.

I attach the ordinary straightening apparatus to the top of the machine, and pass the wire through it'into an aperture, shown at S, and down through the opening made for it in the tongs, and through the orifice in the gauge t. On setting the driving-shaft in m0- tion, the cam j closes the tongs on the wire, and raises the handles by which the wire is drawn down and passed in front ot' the. standard i. 'The cam cnow strikes one end of the holding-rod, and the wire entering thegrcove in the opposite end is held firmly against the standard. The cam j then passes the handles ot' the tongs, and the spring j carries thc tongs up against the feed-gauge, and there holds them for another operation. 'lhe -cam c now advances the 4 slide E, the cutter o separates the wire, and the piece, held vertically against the standard by the holdingrod, enters the groove in the heaks ot' the beinlingjaws as they advance, and is bent around one side of 'the standard, when the arm (l strikes the upper, and,

at the same time, the arm'd, the lower lever of the bending-jaws spreading them apart, and causing the beaks to close the wire into an eye around the standard, with the surplus wire vprojecting.; beyond. attached to the respective parts carries each back to its place for another operation, after it has performed its work, and the cam r strikes the rod R', and the eye is thrown from the standard by the scrape1\ Machines constructed.according to my invention are not limited to the bending of circular forms; but, by variations, which the work to be done readily points out, a variety of forms maybe made by a single machine.

\Vhere there is much dierence in the size of the work, or size of the material from which' it is to be formed, I place in the machine a setot bending-jaws adapted to the work to be done.

What I claim as my invention, and desire to secure by Letters Patent are the following combnationsl-. 'lhe jaws D D', in combinatioirwit the slide E, and standard t', for the purpose ot' bending, when sa'id jaws are operated by arms d and (Il, substantially as shown and described.

2. In combina-tion with the above, the tongs J, cntters o, and gauge t', holding-rod C, and scraper R, ar-

ranged and operated in the manner described.

NOAH C. PERRY.

Witnesses FRANKLIN Y. SILLIMAN, JOSEPH -E. SILLIMkN.

The spring'

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