US1683482A - Wire-drawing block - Google Patents

Description

Sept 4, H9Z8 J. S. PHIFER WIRE DRAWING BLOCK Filed July 30, 1924 2 sheets-sheet 1 sept. 4, 1928. 1,683,482

J. S. PHIFER WIRE DRAWING BLOCK Filed July 5o, 1924 2 sheets-sheet v2 -Patented Sept, el, 128i.

nutren stares Parleur ortica.,

JAMES ST'IART PRIMER, DE' ALLENTGWN, PENNSYLVANIA, ASSIGNOR T0 THE AMERI- CAN' STEEL AND WKRE COMPANY OF NEW'JERSEY, A CORPURATION 0F NEW d' 1ER- SEY.

Application led July 30,

' 'llhis invention relates to wire drawing blocks and while not limited thereto relates more particularly to wire drawing bloc-ks for continuous wire drawing benches, having means for permitting the withdrawal of the wire accumulated on said blocks at s eeds dierent from the peripheral speeds o said blocks, and has for its object the provision of an improved means for maintaining a 1o tension upon the wire accumulated on the blocks.

Another object is to provide a wire drawing block having the novel design, construction, and combination ot'parts hereinafter 15', described and illustrated in the accompanyin drawings.

n the drawingsa Figure 1 is a side elevation of a portion of a wire drawing bench equipped with the improved drawing blocks of this invention.

Figure 2 is a top plan thereof.

Figure 3 is an end elevation thereof.

Figure d' is `an enlar ed detail sectional nelevation on the line l lV ot Figure 5.

Figure 5 is a plan of the u per end o lthe drawing block, showing the riction ring in osition.

eferring more particularly to the drawings, the letter A. designates the drawing bench, which may 'be of any desirable construction, having mounted thereon a plurality oit drawing blocks B and die holders or boxes C.

The drawing blocks B are rotatabl mounted in suitable bearings on the benc and may be rotated by any suitable mechanism. (not shown). lach of the blocks B comprises a drum portion 2 adapted to receive a sucient number of convolutions to cause the tractive edort ot the block to draw the wire through the preceding die, and having a reel-like extension h to receive the accumulation ot 'wire on the-blocks. The reel-like extension 172 is composed of upstanding arms 3, which have their upper ends bent inwardly at right angles as at d to form supports for a retalning r1m or ring 5. The rim or ring 5 is cut away around its periphery 'forming an odset, and a circular ringlihe plate 6 is mounted on to oir the rim 5 and extends over the odset formed in the wien-DRAWING haben.

wat. serial no. 729,109.

outer periphery of the rim V5, thus forming agroove 8.

rllhe rim 5 and plate 6 are removably secured together and to the arms 3 by -bolts 9 and vscrews 9a, so that when desired to remove the ,plate 6 it is only necessary to unscrew the bolts 9 and screws 9a out of the plate 6 and then lift the plate from position. A one piece continuous friction rmg 10 is mountedl in the groove 8 and co-operates therewith to form a friction retard for the wire being drawn from the block.

rlhe ring l0 is of a materially greater internal diameter than thel greatest distance cent its upper end. Illhe sleeve 14 is held together and clamped in position by bolts 15 and is adjustable around the standard 12. rlhe arm 13 is provided with circular bearing member 16 at its free end, in which is rotatably mounted a guide bell 17. An arm 18 extends upwardly from one side of the bell 17 and carries a guide sheave 19.

rllhe wire from the block B is passed under the ring 10. rllhat is, between the ring and bloch and then through the Ouide bell 17' and over the sheave 19, so that the wire leaves the blocky by uncoiling2 as distinguished from unwinding, whlch is the method of taking the wire from the ordinaryvblocks in use heretofore, and the ring-` l0 serves to retard the passage of the wire sulciently to prevent the wire accumulated on the bloclrfrom slipping 0E the same, and

also to cause a sufficient tension on the wire to causel it to remain taut on the kguide sheaves.y

The die holders or boxes are each provide with a guide sheave 20 adapted to receive the giire from the sheave 19 and guide it to the tially axially of the block.

The tension or braking ring l() serves to keep the wire leaving the blocks taut and also to prevent the uncoiling of the wire on the blocks. y

As the wire is uncoiled from the blocks due to the demand of the next succeeding block being greaterI than the preceding block can normally deliver, there occurs a relative backward peripheral movement of the point where the tension or braking acti/on of the ring 10 is eHective. Therefore, the ring is caused to move relative to the block. However, when the demand of the succeeding blo-ck is less than the delivery of the preceding block, the ring 10 Will remain stationary and move with the block due to its frictional engagement therewith.

While I have shown only one specific form of my invention, I do not wish to be limited thereto, slnce various modifications may be and terminating in a retaining rim, said rim being cut away around its peripheryto form an offset, the base portion of said offset portion having its outer edge rounded, a circular ring-like plate secured to the upper face of said retaining rim and projecting outwardly over the base portion of said oil?- set portion to form a groove, a one-piece continuous rigid ring mounted in said groove, said ring being of round cross-Section and having a materially greater internal diameter than the greatest distance bet-Ween two dametrically opposite points on the back wall of said groove, and of a less internal diameter than the greatest distance between two diametrically opposite points on the outer periphery of said retaining rim, said ring being adapted to be frictionally rotated with said block and being'free to move relative to said block in an eccentric path, and the wire being withdrawn from said block being passed between said ring and said re-V taining rim.

In testimony whereof, I have hereunto set my hand.

JAMES STUART PHIFEP..

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