US1620422A - Method for preparing rolls for rolled step-joint bars - Google Patents

Description

March 8 1927. 1,620,422

B. WOLHAUPTER METHOD FOR PREPARING ROLLS FOR ROLLED STEP JOINT BARS Filed June 22. 1925 3 Sheets-Sheet 1 a Mr/vessssx- Bevyanwn A attaining March 8, 1927. 1,s2o;422

B. WOLHAUPTER METHOD FOR PREPARING ROLLS FOR ROLLED STEP JOINT BARS Filed June 22 1925 I 3 Sheets-Sheet 2 f g? 14 R 29 I i 7 g'nwwtoz w NEWS 4 ,Bew y'amin mlluuffiki; 2 e M I I 1,620,422 March 8 1927' B. WOLHAUPTER METHOD FOR PREPARING ROLLS FOR ROLLED STEP JOINT BARS Filed June 22 1925 5 Sheets-Sheet 3 vew I 98 la ammmmigi val 4 4M Wm,

Patented Mar. 8, 1927.

UNITE STATES Farm oFFlcE.

BENJAMIN WOLHAU'BTER, 0F NEVI ROCHELLE, NEW YORK, ASSIGNOR TO THE RAIL JOINT COMPANY, OE NEW YORK, N. Y., A COEIORATION OF NEW YORK.

METHOD FOR PREPARING ROLLS FOB BOL LED SEEP-JOINT BARS.

Application filed June 22, 1925.

This invention relates to the manufacture of compromise or step rail joints, and primarily has in View a novel roll construction permitting of rolling step joint bars in an economical and expeditious manner.

The dissimilarity of the outer and gageside bars of a step joint has heretofore made it diflicult economically to manufacture such bars except by casting and forging operations, but the improvements contemplated by the present invention make it entirely practicable to manufacture these bars by a rolling mill process, whereby an economical and proper distribution of metal may be effected while at the same time the rolling process will facilitate the making of the different bars by the same operation.

A further object of the invention is to provide a roll construction which may be so coordinated with the ordinary passes of a rolling mill that the necessary offsetting and deflections of the joint bar may be provided for and made in the final or finishing pass of the mill.

Another and important object of the invention is to provide a sectional roll construction in which the different units can be interchanged and paired in such a manner that the rolling of quite a variety of step-joint sections may economically be made.

With these and other objects in view which will appear to those familiar with the art, as the nature of the invention is better understood, the same consists in the novelconstruction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed; and though susceptible of a wide range of modification without departing from the spirit of the invention a preferred and practical embodiment thereof is shown in the accompanying drawings, in which v Figure 1 is an elevation, partly in section, illustrating a. roll assembly for turning or cutting at one operation several roll halfsleeves for one section and size of bar.

Figure 2 is a view similar to Fig. 1 showing a roll assembly for turning or cutting a number of roll half-sleeves for another section of bar.

Figure 3 is a detail sectional view showing the roll parts separated to illustrate the facility with which the half-sleeves may be removed and interchanged.

Serial No. 38,815.

Figure t is a detail cross-sectional view on the line -l4 of Fig. 3.

Figure 5 is an elevation of a completed roll assembly made up in accordance with the present invention for rolling step joint bars. I

Figure 6 is a detail sectional View showing'a modified roll construction with the parts opened up, to give an example of the scope of the invention.

Figure 7 is a diagrammatic plan View of a continuous bar delivered from the roll pass formed by the rolls constructed in accordance with the present invention, and showing how this bar may be divided or out up into step bars of rail joint length.

Figure 8 is a detail sectional view on the line 88 of Fig. 7.

Figure 9 is a sectional view on the line 9--9 of Fig. 7.

As above indicated the primary purpose of the invention is to provide a novel means of fabricating step joint bars by a rolling process as distinguished from the rather complicated and expensive methodsnow in vogue for making rail joint bars of that type. Furthermore, the invention provides a construction available for effecting the necessary offsetting and deflections in a step bar at and in the final or finishing pass of the rolling mill. Accordingly,the ultimate object in view is to provide a practical, simple and economical way for making step joint bars, the same fundamentally consisting of subjecting a formed bar to the action of a finishing rolling pass so designed as to produce the predetermined offset or deflection in the bar, and subsequently severing the deformed bar at the middle between 03- sets thereby providing in one operation the bars for opposite joints. A simple example of the results to be obtained by this process is given in Figs. 7, 8 and 9 of the drawings showing for convenience and simplicity of illustration a primary form of splice bar.

The figures of the drawings referred to clearly illustrate that according to the present invention a bar blank designated generally by the reference letter B is subjected to the action of the final finishing pass of a rolling mill so designed as to provide the bar with the necessary offsets both Vertically and laterally, each portion of the bar B between offsets being" of full rail joint length. It is of course understood that the character and extent of the offsetting depends upon the particular section of the rails to be united, and while in the case of the gage-side bars only a vertical offsetting may be necessary, nevertheless, the bars for the outside of the joint usually are deflected laterally as well as vertically in order not only to meet the differences in the fishing spaces of the different rails, but also to respond to the difference in the width of the rails. However, those are the usual conditions which must be met with in the fabrication of a step joint bar and do not affect the present invention, the purpose of which is to produce a continuous bar, alternately of different size or section as shown in Figs. 7, 8 and 9 of the drawings, and after such a bar has been formed with the predetermined offsetting and deflection it is proposed to sever or cut the same at points midway between the offsetting shoulders, indicated at Z), thereby producing the necessary joint lengths.

The ef'fect of cutting or severing the rolled bar midway between the shoulders or offsets is to produce stepped rail joint lengths between the lines aa, making two step joint bars adapted respectively for use in joints at opposite sides of the track. Of course it will be understood that the gageside bars and the outside bars of the joint are made by the same procedure, and the cutting or severing step may be carried out by any of the well known shearing instrumentalities usually employed in a rolling mill for cutting the rolled bar into rail joint lengths.

This performance of the invention is made possible and practical by a novel roll construction which is utilized for the finishing pass of the mill. This roll construction is developed in a novel manner as shown by Figs. 1, 2 and 3 of the drawings. In referring first to the details of this roll construction reference is made to Fig. 8 of the drawings wherein, as shown, each roll designated generally by the letter R is of a sectional construction, the same consisting of a pair of roll sleeve sections designated respectively a 3 adapted to be held tightly in matching relation upon the roll shaft or arbor desig nated by the reference numeral 1.

Each roll section 8 is in effect a half-roll sleeve preferably held in firm interlocking engagement with the roll shaft 1 by means of a key 2 fitted to the shaft and engaging in the keyway 3 at the inner-side of the roll sleeve, and in its outer periphery each roll section or half-sleeve 8 ha turned or cut therein a die groove e corresponding in shape and section to one side of one-half of the step joint bar to be formed in the final pass of the mill. The said die groove 4 in each roll section or sleeve of course is in the same circular plane as the die groove 4 in the roll section or sleeve matched therewith upon the same roll shaft 1, and an important feature of the invention resides in having the roll sections or sleeves 8 independently removable and interchangeable with other sections according to the combination required in the making of any specified step joint bar, and in all form of the invention the two roll sections or sleeves s s which are keyed to or interlocked with a roll shaft are designed to be rigidly but removably held in their assembled relation. That may be accomplished in various ways. For instance, as shown in the group of Figs. 1, 2 and 3 the roll sections may be provided at their sides with the projecting annular collars 5 fitting in the holding recesses 6 of clamping cuffs 7 loosely mounted on the roll shaft 1 and adapted to be held in clamping and holding engagement against the sides of the assembled roll sections and over the collars 5 thereof by means of a lock nut 8 interiorly threaded as at 9 to engage an exteriorly threaded section 10 on the roll shaft. In this assembly one of the recessed clamping cuffs 7 backs up against a fixed abut-- ment 11 while the opposite cuff 7 forms the abutment against which the nut 8 is tightened. Upon loosening of the nut 8 the whole assembly may be opened up as clearly shown in Figs. 3 and 4 and the roll sections or sleeves removed, replaced and interchanged as may be required.

In the embodiment of the roll construction shown in Figs. 1, 2, 3 and 4: of the drawings, the similar matching roll sections or sleeves ss have straightflat meeting faces throughout where the roll is bisected, but other forms of sectional roll construction may be utilized for carrying out the invention, for instance as suggested in Figure 6 of the drawings. In this modification the roll is not divided entirelv in a direction longitudinally of the roll shaft or arbor, but may be of a rabbeted or scarfed formation as indicated by the reference number 12, the rabbeted or scarfed portions 12 of the opposite sections 8 being adapted to register in overlapping relation. This provides a strong sectional roll construction in which the collars and cuffs heretofore referred to may be omitted, or used, as desired, the illustration in Fig. 6 suggesting the possible omission of those details and simply involv ing the lock nut 8 operating on the threaded section 10 of the roll shaft and locking directly against one of the roll sections which in turn jams the other roll section against the fixed abutment 11 on the shaft.

The manner of preparing the upper and lower roll assemblies, for use in making step joint bars adapted to connect dissimilar rails is shown in Figs. 1, 2 and 5 of the drawings. In preparation for this assembly the roll sections, constructed as described, and as shown in detail in Fig. 3, are carefully turned up for each section and weight of rail, making two sets of roll sections or sleeves at each time. As an example Fig. 1 shows the set up of upper and lower rolls for turning such rolls for one section and weight of rail, for instance, a 7 5 lb. rail. \Vith such an assembly both the upper and lower rolls are turned for the one section and weight of rail so that the die grooves 4 in the upper roll for instance form one side of the die pass 13 while the die grooves 4 in the lower sectional roll form the opposite side of the die pass 13 which provides the shape for that part of the bar fitting the said lb. rail. In this way four roll sections or sleeves are prepared at once, two for forming one side of the bar for the said lighter rail, and two for forming the other side of the bar for said lighter rail.

Likewise, the roll sections or sleeves are prepared for forming the bar section for the other rail of the step joint, as for example, for an lb. rail. That is illustrated in Fig. 2 where the assembly of the upper and lower rolls is made complete and said rolls turned for forming the die pass 14 to shape the bar for the said heavier rail. Also, in the same operation four roll sections or sleeves are made, two for forming one side of the bar for the heavier rail and two for forming the other side of the bar for the heavier rail.

Thus, in the examples given there have been prepared two sets of roll sections or sleeves for the finishing pass of the mill. one set of course being used at a time, and the assembly for such set is shown in Fig. 5 of the drawings.

Referring to Fig. 5 of the drawings, such figure shows the novel roll construction resulting from carrying out the invention along the lines above described. As illustrated in that figure of the drawings it will be seen that the upper and lower roll assembly is a combination of the roll sect-ions or sleeves for rolling a bar having the structural characteristics heretofore described and adapted to be severed at the middle of each offset length in order to make the step joint bars. In the example described, namely, in making bars for connecting a given 7 5 lb. rail with a given 85 lb. rail, the upper roll for instance is made up by matching two dissimilar roll sections or sleeves, that is, one section or sleeve having the the groove 4L for the section for the 7 5 lb. rail and one roll section or sleeve having the die groove 4 for the bar section for the 85 lb. rail, the upper roll being shown as adapted to shape the offset for the outerside of the joint bar and the lower roll being shown as adapted to shape the offset for the inner side of the joint bar.

Thus, with each complete revolution of a pair of rolls, having the assembly shown in Fig, 5, there is delivered a continuous bar of alternately different size (and; section when required) with the offsets and deflections occurring at equal distances from each other so that it is only necessary to bisect the bar midway between the offsets to produce step bars of rail joint length as hereinbefore fully pointed out, thereby providing for the rapid and economical manufacture of step joint bars.

It will of course be understood that the above description only gives one example of one combination that may be used in carrying out the invention, but it is to be understood that the invention is susceptible of forming matching roll sections or sleeves for any combination desired according to the particular sizes and sections of the dissimilar rails to be joined by the step joint bars, and the same method of procedure is fol lowed for making the gage-side bars as well as the outside bars of the joint. Accordingly, it will be understood that the particular roll made up for any one rail section can be combined with a roll for any other rail section. For example, the roll for the 7 5 lb. section which has been referred to as combined with an 85 lb. section could also be used with any other section, such for instance as for a 75 lb. or a lb. section. Likewise the roll for the 85 lb. section could be used in any combination desired or required.

Also it will be understood that minor changes in the form, proportion and details of the various parts of the roll construction may be resorted to without departing from the spirit or sacrificing any of the advan tages of the invention.

1 claim 1. A method of preparing rolls for rolling step joint bars which consists first in turning the die grooves in roll sections for one section and size of joint bar, separately turning die grooves in other roll sections for another sect-ion and size of joint bar, and subsequently assembling and mating dissimilar roll sections on the upper and lower roll shafts of the mill, thereby to provide each roll with die grooves of substantially the same shape but of different dimension with offsets at the points of intersection of the two grooves.

2. A method of preparing rolls for rolling step joint bars which consists first in turning roll sections for one section and size of joint bar, separately turning other roll sections for another section and size of joint bar, said other roll sections having a different radius from the radius of said first mentioned roll sections, and subsequently assembling 'dis similar roll sections on both the upper and lower roll shafts of the mill with each roll section on one shaft mating a corresponding roll section on the opposite shaft to form a die pass between them.

3. A method of preparing rolls for rolling step joint bars which consists first in turning roll sections for one section and size of joint bar, separately turning other roll sections for another section and size of joint bar, said other roll sections having a different radius from the radius of said first mentioned roll sections, and subsequently assembling dissimilar roll sections on both the upper and lower roll shafts of the mill with each roll section on one shaft mating a corresponding roll section on the opposite shaft to form a die pass between them, the pair of dissimilar roll sections on each roll shaft being ar- BENJAJHN WOLI-IAUPTER.

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