US1770323A - Die for making journal-box wedges - Google Patents

Description

July 8, 1930. w 13, 0WEL A 1,770,323

DIE FOR MAKING JOURNAL BOX WEDGES Filed Oct. 28, 1927 2 Sheets-Sheet 2 F/G. 5 y 20 'l /44 #/5 /5 y f/ Uff? f 7 Patented July 8, 1930 WILLIAM Gr. POWELL, F ALTONA, PENNSYLVANIA 'DIE FOR MAKING- JOURNAL-BOX WEDGES Application led October 28, 1927. Serial No. 229,470.

fit into place in the journal box Without the usual grinding and finishing processes now universally resorted to after the wedge leaves the forging press.

.Another object of this invention is to provide a new and practical method of manufacturing drop forged Wedges whereby the sides of the wedge which engage the journal box are surfaces made parallel with each other as well as parallel with the side of the journal box, thus eliminating the usual draft universally found in journal box wedges made in drop forged dies of the usual design and manufacture.

A further object of this invention is, to provide a practical means of manufacturing journal box wedges,'such that the cost of manufacture will be reduced, and all wedges so manufactured will be duplicates of each other, and will readily fit into place in the journal box without alteration afterleaving the die. l

With the above and other objects in view, which will be more readily apparent as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully pointed out, illustrated and claimed.

It will be quite readily understood by those skilled in the art to which this invention belongs that the same is susceptible to some minor structural changes and modifications, but a preferred and practical embodiment of the present invention is shown` in the accompanying drawings, in which- Figure 1 is a vertical sectional view of a pair of die members showing the end elevation of the wedge therein.

Figure 2 is a longitudinal sectional view taken at right angles to Figure 1; the line of section being at the`1 left-hand edge of the wedge shown in position in the forming dies in Fig. 1. Y

Figure Sis a transverse sectional view of a standard design of journal box, showing my improved wedge in position therein.

Figure 4 is a longitudinal sectional view of a standard journal box, showing my improved journal box wedge in position 'and also shows its relation to the journal box bearing. Y

ASimilar reference numerals designate corresponding parts throughout the several iigures of the drawings. i

Railway car trucks are provided with out-y side journals, designated by the numeral 10. The 'journal consists of1 a longitudinal cylindrical portion on which a bearing 11 is positioned. Between the top 12 of the journal bearing and the journal box 13 va journal box wedge 14 is positioned, and the primaryv object of the journal box wedge Mis, to keep the journal bearing 11 in its proper position on.

lthe top of the journal 10, as shown in Figures 3 and il of the drawings.

The ournal `box wedge is provided with dependent ianges 15, the outside surfaces 16 at either side of which are made'parall'el with each other, and conform in` vert-ical alignment with corresponding` sides 17 ofthe journal box.' In Vorder to provide for the inaccui racies of the present method of drop forging the wedge, as well as some slight lateral movement between the wedge and the journal box, the lsurface 16, that is designed to impin-ge against the surface 17, is made to extend to approximately one-third of the longitudinal length of the wedge, as shown in Fig. 2 of the drawings. Y y

In drop forging the journal box wedge, using the present accept-edmethodnt isnecessary, in order to remove thewedge from the die, to give the face 16 a taper or draft, which must be removedby a grinding process or otherwise machining the faces suchk that 'the two sides are parallel, and my present invention eliminates this process as well as insures v that all wedges are duplicates of each other no finishing is requiredafter leaving the Accordingly, with a view of properly forming the journal box side engaging surfaces of the wedge, designated by the numeral 16,*atl either side thereof, it is proposed to provide upper and lower die members 18 and 19, each having the necessary recesses made therein for forming the wedge from the metal placed between the same, while the surfaces 16 at either side of the wedge will be parallel with 5 each other and perpendicular to the top surface 20 of the wedge.

To this end it is proposed to form the complemental die recesses of the dies 18 and 19 in such a way that the transverse axis of the complete recess is inclined with respect to the line of division between the dies, and, like` wise, the longitudinal axis of the complete die recess is also disposed at an angle to the line or plane of division on which the die members 18 and 19 separate.

The transverse inclination of the complete die recess is illustrated in Figure 1 of the drawings, and the longitudinal inclination is illustrated in Figure 2 of the drawings.

By referring' to Figure 1, it will be observed that the side 16 of the wedge is formed entirely in the upper die 18, while the opposite face 16a is formed in the lower die 19, and this method of assembling the dies makes it g5 possible to form the above faces 16 and 16a parallel to each other and perpendicular to the top face 20, which is formed entirely in the bottom member 19 of the die.

By this arrangement of the upper and lower dies, all of the various angular `faces throughout the wedge are formed such that when the die members are separated the wedge may be readily removed without draft or taper on either fa ce 16 or 16a, but the proper draft obtained at all other places where such are required.

Having thus described my invention, what I claim and wish to be secured by Letters Patent is- 40 In the art of forging journal boX wedges, a pair of cooperating die members provided Y with complemcntal recesses together providing a chamber conforming in contour to the contour of the wedge, said die members being adapted for straight line movement towards and from one another and having their meeting surfaces disposed in planes at right angles to the direction of their movement towards and from one another, said chamber 5o being disposed with both its transverse and longitudinal axes at an inclination with respect to the plane of the meeting faces of said die members whereby the sides and the ends of the wedge may be formed with parallel surfaces, respectively, and whereby the wedge may readily be disengaged from the recess in each die member.l

In testimony whereof I aix my signature.

WILLIAM G. POWELL.

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