US1238002A - Pulling device for rolling-mills. - Google Patents

Description

'W. C. CORYELL.

PULLING DEVICE FOR ROLLING MILLS.

APPLICATION FILED SEPT-29. 191s.

1,238,002w Patented Aug. 21,1917.

PU'LLING DEVICE FOR ROLLING-MILLS.

I Specification of Letters Patent.

.Patented Aug. 2f, 191W.

, Application filed September 29, 1916. Serial No. 122,798.

To all whom it may concern:

Be it known that I, WILLIAM C. CoRYnLL, a citizen of the United States, residing at Youngstown, county of Mahoning, State of Ohio, have invented certain new and useful Improvements in Pulling Devices for R011- ing-Mills, of which the following is a specification.

The present invention relates to pulling devices or mechanisms for drawing out the material worked upon by rolling mills. of the objects of't'he invention is to provide a device in which the work-engaging member may be laterally adjusted to maintain it in proper alinement with the workand the portion of the rolls of the mill through which it is passing. Another object of the invention is to so construct the device that the'pull exerted by it may be gradually reduced as the material is drawn out and its cross-section diminished.- Another object of the invention is to provide a device which shall be simple and efficient in construction and operation.

With these general objects in view, the

particular character of the invention will be best understood upon considering the following detailed description taken in connection with the accompanying drawing, and the scope of the invention will be pointed out in the'appended claims.

In the drawing, Figure 1 is a general view illustrating a pulling device constructed in accordance with the present invention and constituting the preferred form; Fig. 2 is a plan view of the carriage and a portion of the track upon which it runs; Fig. is a plan view of one of. the weight-retaining rings of the guideway through which the weights pass; Fig. 4 is a plan view of a modified form of arm and material-engaging ,wheel for use upon the carriage; Fig. 5 is a side elevation of the same; Fig. 6 is a plan view of a modified work-engaging member upon the same arm; Fig. 7 is a side elevation of the same; Fig. 8 is a sectional view of a modified weight guide; Fig. 9 is a perspective view of a portion of the same; Fig. 10

is an elevation illustrating a simple applica-' tion of weights to the drawing cord; Fig. 11 is a plan view of one of the we ghts and Fig. 12 illustrates a further modification in which a weight travels down an inclined surface to vary the pull upon the cord.

One 7 Throughout these views like characters refer to like parts.

Referring to the drawing in detail, and more particularly to the preferred form of the invention, 20, 21 and 22 designate-three rolls of a rolling mill of the type illustrated in my prior application Serial No. 46654,

' filed August 21st, 1915, Patent No. 1,221,029,

granted April 3, 1917 In this particular instance the mill is intended for rolling endless articles and 23 designates an endless belt which has been rolled out to practically its full length. In practice the blank, which is in the form of a ring, is slipped over the roll 21 and as the rolls are operated it enlarges into a loop which finally becomes of such length that it may be slipped over the work-engaging member 24, which is prefer ably in the form of a flanged wheel. In the preferred form, this wheel or pulley 24 is mounted upon a trolley frame 25 which is adapted to be drawn forward from the rolls as the loop lengthens. The pulley 24 isremovably journaled between the bifurcated arms of the bearing member 26 and the latter is threaded upon a'transverse screw 27. As clearly shown in Fig. 1, the free ends of the arms of the bearing member 26 are turned upwardso as to form hooks or recesses which constitute bearings for the axle of the pulley 24. By reason of this construction the pulley may be readily put in place after havin loop of the material being worked upon by the mill. The adjusting screw 27 is journaled at its ends in upward extensions of the frame 25 and is free to be rotatedby the hand-wheel -28 so as to shift the bearing member 26 to the'right or left :to keep the wheel 24 in proper alinement with the working portions of the reducing rolls. A collar or nut 29 is threaded on the screw 27 and said nut and the hub of the hand-wheel 28 are positioned on opposite sides of a portion been threaded into the of the frame 25 and thus serve, when the nut clearly illustratedi A rope or cord 33 is secured at one end to the bearing member 26 by being passed through an opening in sald member, and extends forward to the pulling mechanism. By this mechanism the carriage is pulled forward so as to maintain the loop 23 under the proper tension as it is being worked upon by the rolls of the mill.

. In the present instance the cord or rope 33 passes over a pulley 34 and is provided at its lower end with a series of weights 35, 36,

1, the weights 35, 36, 37 and 38'are in contact with each other and all exert their pull upon the cord 33; This starting position of the weights is indicated in dotted lines in Fig. 1. As the material is drawn out by the carriage, these weights travel downward. Since the cross-sectional area of the material decreases as it lengthens, it is desirable to gradually reduce the pull upon the cord 33 by successively removing the weights, or certain of them, from exerting any pull upon the cord 33. For this purpose rings 39, 40 and 41 are secured at spaced intervals to an upright 42. The ring 39 is of such size that it will engage weight 35 but pass weights 36, 37 and 38 through it. Similarly ring 40 will engage weight 36 but pass weights 37 and 38. And, finally, ring 41 will engage weight 37 and pass weight 38. In this way as. the Weights travel downward the upper ones are successively engaged and their pulling effect re moved from the cord 33. In the present in stance the rings 40 and 41 are of the same size as ring 39 but are provided with lugs which project inward far enough to perform the functions indicated. The lugs 43 upon ring 40 extend far enough inward to engage weight 36 but not far enough to prevent weight 37 from passing. Similarly lugs 44 on ring 41 extend far enough inward to engage weight 37 but not far enough to prevent weight 38 from passing. In order that the weights 36 and 37 may be properly centered upon the rings 40 and 41, respectively,

the former is provided with guiding projec-- tions 45 and the latter with similar pro ections 46. These guiding projections have inclined faces on their inner sides so as to-cause the associated weights to center themselves upon the rings and thus insure a proper alinement, which is necessary in order that the weights may be removed in the manner explained. Upon the return movement of the cord the weights are removed from their rings in the reverse order. as will be apparent without further explanation.

Instead of automatically removing the various weights in the manner indicated in Fig. 1, they may be simply supported upon designer.

In the carriage structure the pulley 24 and the associated bearing member 26 may be replaced by a pulley 51 and an arm 52. In this instance the pulley or wheel 51 constitutes the loop engaging member and is mounted upon a pin or shaft projecting laterally from the arm 52, and the latter is adjustably mounted upon the screw 27 of the carriage. This adjustment is brought about by giving the arm 52 threaded engagement with the screw 27 in a manner similar to that provided in the case of the member 26. Instead of employing a pulley or wheel 51, the arm 52 may be provided with a rigid loopengaging member 53, as clearly illustrated in Figs. 6 and 7. The member 53 is rigidly secured to the outer end of the arm 52 by any suitable means, such as pins 54 extending through a plate or yoke 55 into the arm 52. In operation the loop 23 slides over the surface of the member 53, which is also preferably'provided with flanges like the wheels 24 and 51'.

In lieu of the weight-guiding structure of Fig. 1, I may employ the modified structure illustrated in Figs. 8 and 9. In this instance the uprights 56 and 57 which are preferably channel irons, constitute the guide-ways for the weights 58 to 64, inclusive, which are shaped so as to fit into the space between the flanges of these mem-- bers In the stack of weights 58 to 64, inelusive, I provide at intervals plates 65, 66 and 67 which are arranged to engage stops carried by the pairs of cross-bars 68, 69 and 70, respectively. In the case of the plate 66, which is clearly illustrated in Fig. 9, I provide three lips or extensions 71, two extending from one side and one from the other. These are *ada pted to engage stops 72 mounted .upon the bars 69. The plate 65 is provided with similar projections 73 which coiiperate with stops 74 secured to the side bars 68. The plate "67 is provided with similar projections and the side bars 70 with similar stops. As clearly illustrated, these pro ections and stops interfere only in a definite order. Thus as the weights are lowered they all pass the stops 74 located upon the side bars 68 until the plate 65 reaches said stops. When this occurs, the projections 73 engage the stops 74 and the further descent of the weights 58 and 59 is prevented. The downward movement of the remaining weights continues until the plate 66 reaches stops 72 upon the side bars 69, whereupon it and the weights 60 and 61 are arrested and their further downward movement prevented. Similarly plate 67 engages the stops on the side bars and the down ward movement of weights 62 and 63 is arrested. This leaves only the weight 64 and its supporting plate to continue their downward movement. Upon the returning movement of the weights they are taken up in the reverse order until all are brought together into the position shown in dotted lines in Fig. 8. This is the position corresponding to the dotted line position of the carriage of Fig. 1. As clearly seen, the various weights employed in this modification are slotted so that they may be removed from the structure when raised above the top of the channeled members 56 and 57. Likewise the opening around the cord 33 is such as to allow the free passage of the cord through those weights which are retained at different points during their downward passage. Obviously-the lips or projections upon the various catch plates and the stops upon the various cross-bars may be varied in position and it is only necessary that they be arranged so as to engage in the manner just explained. In this form of the invention I have also indicated the stopping of a plurality of weights in each of the several positions, thus weights 58 and 59 in one position, 60 and 61 in another, and 62 and 63 in a third. Obviously any desired number of weights may be employed, according to the character of the pull which it isdesired to exert upon the carriage of the device. 1

A still further modification of the invention is illustrated in Fig. 12, where the cord 33 after passing over pulley 34 is secured to a weight 76 which is adapted to pass downward over the curved surface 77 as the carriage moves forward from the rolls of the mill. It will be seen that as the weight 76 travels downward over the curved surface 77, the vertical component of the force exerted by the weight will be varied and consequently the pull exerted upon the cord or rope 33 will be varied. In the particular instance shown, the pull willbe gradually reduced as the weight is lowered and the greater reduction will take place toward the end of the downward movement. Obviously the shape of the surface 77 may be varied to suit the requirements of any given case.

It will be noted that the track wheels 30 and rails 32 of the particular structure herein disclosed, c nstitute convenient guiding means for the 'frame and associated parts and obviously may be replaced by other guides and guiding surfaces. Likewise the lateral adjustment of the work-engaging &

member may be brought about in other ways than by the adjusting screw 27. Other modifications will also suggest themselves to persons skilled in this art and need not be particularly pointed out.

It is pointed out that some of the matter disclosed herein is also disclosed in my aforesaid prior application Serial No. 46654, filed August 21st, 1915, Patent No. 1,221,029, granted April 3, 1917, and in my prior ap plication Serial No. 59582, filed November 4th, 1915, Patent No. 1,233,647, granted July 17, 1917, and that therefore the present application is in part a continuation of said applications.

that I claim as new and desire to secure by Letters Patent of the United States is:

1. A pulling device for drawing out the material worked upon by rolling mills, including a frame, wheels on said frame adapted to travel on a track, an adjusting screw journaled near its ends in portions of said frame, a bearing member mounted for travel on said screw, and means at the free end of said bearing member for engaging said material to draw it out as said frame is moved.

2. A pulling device for drawing out the material worked upon by rolling mills, including a frame, wheels on said frame adapted to travel on a track, an adjusting screw journaled near its ends in portions of said frame, a bearing member mounted for travel on said screw and having bifurcated arms extending in the direction of travel of said frame, and a material engaging member removably mounted in recesses formed in the outer ends of said arms.

3. A pulling device for drawing out the material worked upon by rolling mills, including a frame, wheels on said frame adapted to travel on a track, an adjusting screw journaled near its ends in portions of said frame, a bearing member mounted for travel on said screw and having bifurcated arms extending in the direction of travel of said frame and terminating in upturned ends, an axle journaled in said recesses, a material engaging wheel on said axle, and means for rotating and setting said screw to adjust said wheel relative to said frame.

4. A pulling device for drawing out the material worked upon by rolling mills, including means for engaging the material and means for drawing out said engaging means with a pull which decreases as the cross sectional area of the material decreases.

5. Pulling mechanism for drawing out the material worked upon by rolling mills, including a frame, wheels on said frame, a track on which said wheels travel, a bearing member carried by said frame, means at one end of said member for engaging said material to draw it out as sald frame is moved,

' and means for adjusting said engaging means laterally of said track.

6. Pulling mechanism for drawing out the material worked upon by rolling mills, in-

cluding means for engaging the material, and.

means for drawing out said material as it is worked upon by the mill comprising'a plurality of weights arranged to be removed one by one as the material lengthens.

7. Pulling mechanism for drawing out the material worked upon by rolling mills, including means for engaging the material, means for drawing out said material as it is worked upon -by-the mill comprising a plurality of weights, and means for automatically removing said weights one by one as the material lengthens.

8. Pulling mechanism for drawing out the material worked upon by rolling mills, including means for engaging the material, means for drawing out said material as it is worked upon by the mill comprising a plurality of weights, projections lying in the paths of travel of the difi'erent weights and operative. to successively engage and hold the weights out of pulling position as they travel downward in response to the lengthening of the material.

9. Pulling mechanism for drawing out the material Worked upon by rolling mills, including means for engaging the material,

means for drawing out said material as it is worked upon by the mill comprising a mass acted upon by gravity, and means for gradually reducing the pull exerted by said 85 mass as the latter moves downward during the lengthening of thevmaterial.

10. A pulling device for drawing out the material worked upon by rolling mills, including a frame, means for guiding said frame in a to-and-fro movement, a bearing member secured to said frame, means foi" of travel of said frame, and a materialengaging member removably mounted in recesses formed in the outer ends of said arms.

12. Pulling mechanism for drawing out the material worked upon by rolling mills, including a frame, guiding surfaces on said frame, guides on which said surfaces travel, a bearing member carried by said frame, means at one end of said member for engaging said material to draw it out as said frame is moved, and means for adjusting said engaging means laterally of said guides.

In testimony whereof I have hereunto subscribed my name this 27th day of September, A. D. 1916.

WILLIAM C. CORYELL.

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