US1594570A - Wire-straightening device - Google Patents

Description

Aug. 3 1926. v1,594,570

F. H. SLEEPER WIRE STRAIGHTENING DEVICE Filed Dec. 15, 1923 Patented Aug. 3, 1926i.

neu s isaiasi@ FRANK H. SLEEPEB, OF WORCESTER, MASSACHUSETTS, ASSIGNOR T0 SLEEPER HARTLEY, INC., 0F WORCESTER, MASSACHUSETTS, A CORPORATION 0F MASSA- cnnsnr'rs.

WIRE-STRAIGHTENTNG DEVICE.

This invention relates to a wire straightening. machine of the type in which the wire passes through a series of alternately otl'set. dies in a rotating arbor.

The principal object of this invention is to provide guiding devices for the wire .to cause it to enter the dies, located and arranged with such relation to the diesthemselves that they do not involve additional adjusting and supporting means `and that they will always move with the dies and therefore necessarily always be in the proper position for performing their function.

Reference is to be had tothe accompanying drawings, in which- F ig. 1 is a side view of a wire straightening arbor with a preferred embodiment of this invention applied thereto and shown partly in central section;

Fig. 2 is a horizontal sectional view of the same on the line 2 2 of Fig. l, and

Fig. 3 is a perspective view of one of the dies and corresponding guide.

I am aware of the fact that arbors for straightening wire have been designed having pairs of dies adjustably arranged thereon and provided with individual guides inde-l pendently adjustable to bring them into proper position with respect to the dies for the purpose of guiding the wire into the dies when it is pushe'd in in an axial direction. This invention is designed to do away with the separate independent adjustment of the guides and also to insure the proper,

location of each guide with respect to its die in all adjusted positions of the latter.

I have shown the invention as applied to an arbor 10 of well-known form, which consists of a generally cylindrical body mounted to rotate on its longitudinal axis and to receive the wire therethrough and straighten it as the wireis drawn through it. Tt is shown, as usual, with a crowned pulley 11 at one end for receiving a belt for driving it and with bearings 12 at its opposite ends for supporting it. This arbor is provided with a passage centrally locatedand extending all the way through it for the reception of the wire. This passage is provided with recesses within which are located pairs of dies 13 and 14. These dies are for the purpose of receiving the wire passing through the arbor and taking out the irregularities so as to deliver it in a smooth and straight condition. Behind each die is a screw l5. These screws are mounted in radially threaded recesses .and the screws are intended to -be adjusted so that each pair of dies, except the two end pairs, will be adjusted off center and arranged alternately as is well understood in this art.

Instead of going to the expense of providing separate guides for guiding the wires into each pair of dies, li forni one of each pair of dies, for example, the one numbered 14, with an integral projection 16. This projection extends toward thel feeding in end of the arbor and is slanted away from the axis of the wire which passes through the arbor. The surface of this slanting projection whichis on the side thereof toward the wire is provided with a wire guiding groove 17. This is wide at its intake end and gradually narrows down to the width of the groove 18 in the die through which the wire passes. This tapering guide groove 17 therefore guides the wire into the straightening groove 18 and between the two dies .13 and 14. These dies are made usually of a material softer than the wire to avoid marring it as their only function is to straighten out the irregularities and deliver the wire in a straight vand smooth condition.

Tn operation the arbor is set into rotation and the wire is brought into it from the left hand end through rolls, not shown, andy forced along axially. Of course, the wire is guided into the first pair of dies without any special means for guiding it other than the central passage through the pulley 11. These dies are arranged concentrically with the pulley and receive the wire directly therefrom. Tt then passes along from these dies toward the next pair of dies but strikes the guide passage 17 and is forced thereb to slide along the passage out of centra position and into the passage between the two adjacent dies. it goes to the next pair where it is diverted in the opposite direction, by corresponding means, and continues on through the arbor until it is finally discharged from the center thereof at the o posite end. The

From there reasons for ofsettingl'the ies alternately in wire passes directly front edges of to the kind of wire being operated upon.A

This is why the adjusting screws are provided.

With the device set up in this way the through the arbor from end to end and directed slightly back and forth without having its progress interrupted by engagement with the transverse the dies. The operation is performed quickly and readily on account of the avoidance of this difficulty.

By providing the guides 16 integral with the dies 14 the expense of a separate adjusting device for each one is avoided. Furthermore, the operator has to pay no attention `to the adjustment of the guides into proper relation with the dies because they always must be in the proper position to perform their function most evenly, being adjusted with the dies. This involves economy both in construction and in attendance. l

Although I have illustrated and described only a single form of the invention I am' aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all the details of construction herein shown and described but what I do claimisz A 1. A wire straightening device comprising a rotary arbor having a central passage for the Wire and having a plurality of transverse threaded holes, opposed pairs of grooved dies engaged in said holes, and adjusting screws in said holes back of said dies, one of each pair of dies having a long inclined lateral extension provided with a converging groove to guide the wire into the grooves of the dies.

2. A wire straightening device comprising a rotatable arbor having pairs of straightening dies located along it, each pair of dies comprising a short straight die anda long die rnd said pairs being offset from each other alternately in opposite directions, the long die of each pair being provided with a'i integral projection extending therefroni toward the entrance end lof the arbor, said short dies all being located back of a longitudinal centralY line, said projections each having a slanting surface with a tapering groove therein for receiving the advancing end of the wire, said surface being arranged in 'a position to force the end of the wire to travel in the groove and be guided thereby into the space between the two dies of the pair.l

In testimony whereof I have hereunto a l'- ixed my signature.

l FRANK H. SLEEPER.

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