US1442920A - Railroad frog and process of making same - Google Patents

Description

Jan.. 23, 1923. c. A. ALBEN.

' RAILROAD FROG AND PROCESS 0F MAKING SAME.

2 SHtETS-SHEE`I l.

FILED AUG. I2. I92I.

Jan, 23, 1923.. 1,442,92@ C. A. ALDEN.

RAILROAD FROG AND PRocEss 0F MAKING SAME.

FILED AUG. 12| 1921- 2 SHEETS-SHED 2. Y

titi

Patented dan.. 3, ldd.

CHARLES AMES ALDJEN, 0F STEELTON, PENNSYLVANIA..

i RAJILROAD FROG-AND PROCESS OF MAKING SAME.

Application led August 12, `1921. Serial No. 491,'l2t.`

over thespecies described and `claimed in my application 384,238 filed May 25, 1920.

Briefly stated the process described in said prior applications consists in forming the `frog from a worked metal barwsuch as a rolled or forged bar. More specifically the process described in said applications consists in operating on a bar of substantially uniformV cross sectional shape to widen the same approximately at the point where the wings are to end and forming the flangeways, wings and point.

The frog of the present invention has centrally disposed integral separator blocks at the ends thereof, to which the track rails are secured. Each block has its sides formed to snugly lit into the channels in the sides of the rails and is of gradually increasing width from its neck to its free end.

`'llhe frog described in said application 384,238 has similar separator blocks, but is made from asolid bar. provement consists in forming the frog having separator blocks as described, from a bar with a groove in its bottom, extending from end to end thereof thus saving material as compared with manufacturing the same from a solid bar. ln order that the `blocks may not weaken too much, the groove is of less width than the necks of the separator blocks. f

Utherobjects and features of novelty will bel apparent from the description taken in connection `with the drawings in which:

. Figl is a top plan view of a bar or blank fromY which the frog isconstruc-ted;

Fig. 2 is a cross sectional elevation of the bar;

Fig. 3 is a plan view of the bar after the .first operation has been performed on the same; 1

rlhe present im- Fig. 4 is a sectional. elevation taken substantially on the line 4--4 of Figure 3;`

F i 5 is a sectional elevation taken substantially on the line 5-5 of Figure 3 Fig. 6 is a top plan view of the completed frog; y 1

Figs. 7 to 12 inclusive areV sectional elevations taken on the corresponding section lines respectively ofFigure 6; and l Fig. 13`is a perspective view of the frog shown in Figure 6.

According to the present invention the frog is constructed from` a rolled, pressed or forged blank or bar of substantially uniform cross section, there being a narrow from end to end thereof. .As shown, the bar or blank 40 is of substantially uniform width and height and has the longitudinally extending groove 41 in its bottom face, this groove preferably not being much greater ,groove in the bottom of the bar extending 'i than a third of the width ofthe ,main` part of thebar. `At the lower edges of its longitudinal side faces, the blank may be provided with oppositely extending base flanges 42, the bottom surfaces of which are flush with the bottom of the bar. lf the over all width of thebar is considered, the width of groove 41 should not be much greater than one-fifth thereof. H y l .The lirst step of the process for forming the frog of the present invention consists in operating on the bar of Figure 1` to alter the cross sectional shape at a point intermediate the ends thereof. This operation is for the purpose of providing for the flaring of the wings at their ends and the increased width of the flangeways` adjacent the ends of the wings. As shownin Figure 3, this operation consists in forming the two recesses 43 substantially triangular in `plan view and spaced transversely of the top of the bar and further in forcing out the outer walls 44 bounding these recesses so `thatthe bar is widened at this point.` This may be accomplished by indenting the bar as by a rolling or pressing operation.V The groove 41 at this region may be y simultaneously widened and made deeper, as shown by the cross sectional `View of Figure. `This operation may effect a slight elongation of the If desired, the Work mayy be subjected to a suitableheat treatment at this 'stage oi the process, for the purpose oi' raising the elastic limit and ultimate strength.

The next stepi-n the process consists in operating on the top of the bar to forni the langeways 46, including the recesses 43. Preferably the flangeways are formed by removing metal from the top' et the bar as by machining, thu-s providing the opposite Wings 48 and 4,9 corresponding to the Wing` rails of a frog and alsoproviding the point 60 Corresponding to the point rails.y it will be noted' that the ends of the Wings are flared outwardly as indicated at 50 and 51, and that the llangevvay sadjacent thereto are Athus widened yFor thekpu'rpose of providing` means t'or securing` the track rails to the frog, the ends are provided with the integral separat-or blocks 5,6 and 5.7. As clearly shown in Figures 6 and 13, these separator blocks are of increasing width lfrom. their necks to their outer ends Their lateral sides are 'formed to snugly iit in the channels in the sides oi the track rails, as shown in Figures T and 12. rlshe track rails are clamped against the sideswof the blocks With their ends abutting shoulders 5 8 and 59 at the opposite ends of the frog, suitable splice plates 60 and 6l being provided for this purpose. The splice plates 'lit in theouter sides of the rails and in channels or recesses 62 andl63 formed in the sides of the frog adjacent the necks ot the bloc-ks` Suitable bolts 64 are provided ndA clamp the splice plates and rails to the rog.

As clearly shown in Figure 6 the groove 4l in the bottom of the frogis of lessrwidth than the neck of the separator blocks. Preferably this groove is not substantially Wider than 'one-third the width ot' the main part oi" the -bar or blank.

Preferably the frog is constructed l'roin a Worked steelbar, althougl'i the invention is not limited. to this metal.:

Although a specific Jfrog and the process of rriakinfbT the same ha ve been described in detail, it is to be understood that the invention is not thus limited', but includes modiiications and changes which come Within the scope of the appended claims'.

Haying thus described the invention what is claimed as new and desired to be secured by Ize'tters' Patent is l.. As an article of manuii'acture a worked metall frog oi' substantially uniform cross sectional area throughout the greater' part of' its length havingv an integral separator block atl each en dF and adapted for securing the track rails to the outer sides thereof, said sides being shaped to snugly fit into the channels in the sides oit the rails, each block being or gradually increasing width from its neck to its end, and said troplr having a groove in its bottom extending `from end to end thereof.

2. The process of making a one piece rail road frog having` an integral centrally projecting separator block at cach end with its sides shaped to snugly lit into the channels in the sides o'f the track rails. each block being of gradually increasing width from its neck to its end; consist-ing` in opcmtinpr on a bar ot substantially uniform cross scch tional shape having;` a groove in its bottoni extending` from end to end. said `groove hcing of substantially less width than the neck otI the separator blocks, to widen the saine at the regions where the wings are to end. removing` stock from the top ot' the bar to form the liangeuays. wings and point, and operatin` on Athe cnil of thc bar to forni said separator blocks.

3. The process ot makingf a one piece railroad jtrog havingl an integral centrally projectingseparator block at each end with its sides shaped to snugly lit into the channels in the sides of the track rails, each block beingI ot gradually increasing width from its neck to its end; consisting in operatinpr on a bar of substantially uniform cross sectional shape having a groove in its bottom extending` from end to end and being: not Wider than one-third the width of the main pai-tof the frog, to widen the saine al; the region Where the wings are to end, removing` stock from the top ot the bar to form the flangmvays, wings and point, and operating on the end ot the bar to form said separator blocks.

The process oi making a oln` piece railroad frog havingr an inten-ral centrally projecting separator block at cach cuil with ils sides shaped to snugly lil in'o the channels in the sides of thc trackV rails. nach block being' olf gradually increasing width lroln its neck to its end, consisting in oporatiin;` on a bar olf substantially uniform cross ser tional shape and having` a groove in its bot,- tom extending 'from end to end and boina` substantially not Wider than one-fifth of' thi-r total width ot the trug` to widen tho saine at the region where the wings are to cnil. removingv stock 'l'roni the top ol the bar to liorm the tlangcu'ays. ings andv point. and operating' on the rnd ol thc har to forni said separator blocks.

In testimony whcreoil l aliix my signature.

CHARLES AMES ALDEN.

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