US1246418A - Frog. - Google Patents

Description

N. (LGOLDSMITH.

FRQG.

APPLICATION FlLED JUNE 9,11917 Patented Nov. 13, 1917.

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UNITED sTATEs PATENT oEEIoE.

NATHANIEL 0. GOLDSMITH, 0F NORWOOD, OHIO, ASSIGNOR T0 THE WEIR FROG COM- PANY, OF NORWOOD, OHIO, A CORPORATION OF OHIO.

FROG.

Specification of Letters Patent.

Application ined June 9, 1917. seriai No. 173,724'.

To czZZ lwhom, t may concern:

Be it known that I, NATHANIEL O. GOLD- sMiTn, a citizen of the United States, and a resident of Norwood, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Frogs, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to frogs or crossings, particularly those to be employed in railroad work, where the strains are much greater than in street railroads. It also relates to insert frogs or crossings in which the insert is made of some hard meta-l such as manganese steel, such frogs being called manganese insert frogs.

There are two most important points in insert frog construction, first, that the insert be securely bolted in between the rails of the frog so as to be perfectly tight, and, second, that the bolts should stay tightly in place, both of which are difficult because the bolt holes in the insert cannot be accurately` gaged in casting the piece and the insert will thus work loose quite rapidly.

I am aware that the use of a soft metal to secure the hard wearing plate in a manganese frog or crossing has been employed. Especially is thisl true in the case of crossings or frogs used in traction lines, in which the manganese insert has been placed in a casting and after it is wedged up to the proper location, molten zinc has been poured around the retaining casting and the manganese insert for the purpose of securing this insert in place. This construction, however, forms a bed of soft metal under the manganese insert, which merely rests upon a narrow bearing afforded by the wedges.

In some constructions, the manganese insert has been bolted to the casting and soft metal poured around the nuts ofthe bolts and under the insert for the purpose of preventing the nuts on the bolts shearing loose and forming a bed for the insert.

My invention diers from thisv in that no attempt is made to secure a soft metal bearing between the manganese casting and the rail base, nor has any attempt been made to prevent the nuts on the bolts getting loose by means of soft metal poured around the bolts. The principal object I desire to secure is an inexpensive means of preventing advantage of the feature of drawing the in` sert tightly into place between the railsV of the frcg with the bolts, and still permits of zincing the bolts in place after the frog has been tightly bolted together.

This object I accomplish by that certain construction and arrangement of parts to be hereinafter more lspecifically pointed out and claimed.

In the drawings,

Figure l'is a top plan view of a frog illustrating my invention.

Fig. 2 is a like view of a modified form of insert for the frog shown in Fig. 1.

Fig. 3 is a sectional view taken on the line 2, 2, of Fig. l.

The frog is of the usual construction, and it should be understood that the frog proper forms no part of this invention. Neither is the invention applicable only to frogs, since in switches, crossings and all kinds of special rail parts where hard metal inserts can be used, the invention is as readily applicable.

The frog as illustrated has the wing rails 1, l, and the guard rails 2, 2, between which is the insert 3. The insert is made of hard metal, such as manganese steel, and is formed so as to t the space between the rails of the frog structure.

In the case of a crossing, the insert would not, of course, be shaped in the same manner, but would be shaped so as to it between the rail parts to be assembled together. As vshown in Fig. 3, the rails of the frog have webs l between which and the balls and bases of the rails the insert ts.

Running through the insert and the rails are bolt holes 5, 5, for the insert, and 6, 6, for the rails, and set in these holes are the bolts 7. The operations in putting the frog together, which is done before shipment, are to set the insert into the web space of the rails and turn up the bolts so as to draw the rails and insert together, with the insert clamped into the web space.

Patented Nov. 13, 1917.

As shown, the inserts are made of the full width of the space between the rail members of the frog, and when the parts are boltedtogether, there is a contact at theb abutting points between the rails and the insert which is tast and tight, since the insert fills the entire space between the rails. Also the insert is made with ai base 8 to lit against the extending bases of the rails' and a shoulder 9 to fit under the ballot the rails, so that it is held against vertical movement dependent upon the closeness ot the fit and the tightness with which the bolts are' turned up in assembling.

In the one form of frog (Fig. l), there are cut in the sides of the insert the narrow slots or grooves l0. These cuts are made to leadv into the bolt holes of the insert, and the bolt holes Yare made'to loosely receive the bolts.

After the frog is assembled, some soft met-al binder 10'@v is poured into the slots and runs through them into the bolt holes of thel insert, thereby binding the bolts in place and preventing their arring under the most trying usage.

In another form of insert, the slots are made wider as at 11, leaving the original sides of the insert in the form of pads 12 which abut against the rail members of the frog when assembled. The soft metal in this instance will flow into the bolt holes through the spaces ll intermediate the pads, and it will also serve some function in holding the parts of the frog together at the sides.

The second form of insert is not perhaps as valuable as the first, since there is not so much of an abutment of the insert to the rails. In each case, the frog may be completely assembled in finished form and bolted tight, before any soft metal is poured into the structure. And in each case the structure is a bolt-held frogY with the bolts zinced to keep them in place in the cored holes of the insert.

I am aware, as stated, that Zinc or other soft metal binder has been used in frog construction, but in the uses with which I am familiar, the inserts were laid in a bed of soft metalbetween the rail members of the frog, and although bolts may have been used, they really served no function, since the frog was bound together without them and the tightening 4'of them could noty be done effectively because they were bound in with the Asoft metal before they were turned AHaving thus described my invention, what 'I claim as new land desire to secure by Lette'rs Patent, isa'- 1, In a 'frog switch or crossing, rail members, and an insert member having bolt holes, bolts for tightly securing the insert between the rail members, said insert being formed with passageways so as to permit the flowing of soft metal into the bolt holes after the said device is assembled and the bolts tightened in place.

2. In frog switch or crossing, yrail members, and an insert member having bolt holes of larger size than the bolts to be used, bolts passing through the rails and insert and tightly turned up, and grooves in the insert running to the bolt" holes to permit of liowingrsoft metal into the bolt holes after the assembly of the said device..

3. A frog switch or crossing, comprising rail members, and an insert member, said insert member being tormedso as to till the space between the rail members, and abut the balls of the rails at the one side and the bases of the rails at the other fitting tightly therein, bolt holes in the rail members and the insert, an dl passages in the insert leading to the bolt holes, for fiowing` sott metal into the' bolt holes after the assembling and tightening of the device.

el. In a frog switch or crossing, rail members, and an insert member having bolt holes of larger size than the bolts to be used, bolts passing through the rails and insert and tightly turned up, and grooves inthe insert running to the bolt holes to permit of flowing soft metal into the bolt holes after thefassemblyv ot the said device, said grooves being in the edge of the insert and reduced in width so as to cut out the least possible amount of the abuttingy side portions of the insert,

5. In a frog or the like, rail members having balls, flanges andbases, an insert to fit between .said rail members and shaped to conform at the sides to fit into the webs of the rails and present shoulders to the balls and bases, bolt holes in the rail members and insert, bolts in the holes, and'- int-erspaced passages in the insert leading to the bolt holes, whereby the bolt-holes may be zinced after assembly of ythe frog.

6. In a frog or the like, rail members having balls, flanges and bases, an insert to fit between said'y rail members and shaped to conform at the sides to lit into the webs of the rails an'd present shoulders to the balls and bases, bolt holes in the rail members and insert, bolts in the holes, and interspaced passages in the insert leading to the bolt holes, whereby the bolt holes may be zinced after assembly of the frog, ysaid passages comprising narrow grooves cut inthe sides 'of the insert.

NATHANI-EL O. GOLDSMITH.

.Copiesofgthis patentV may be obtained -for iive cents each, by addressing the .Gommissioner of- Patents,

- Washington, D. (1..y

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