US1174561A - Segmental brake-shoe. - Google Patents

Description

J. D. GALLAGHER & G. COOK.

SEGMENTAL BRAKE SHOE.

APPLICATION FILED OCT. 23.1914.

Patented Mar. 7,1916.

WITNESSES STATES PATENT OFFICE.

- .r osm n n. GALLAGHER, or GLEN amen, Ann GEORGEQCOOK, or ALLENDALE, NEW JERSEY, ASSIGNORS To AMERICAN BRAKE SHOE & FOUNDRY company, or MAH- 'wnn, mew mnsnx, a conronarion or NEwJensEY.

' 'SEGMENTAL BRAKE-SHOE.

' Specification oiLetters Patent.

Patented Mar. 7, 1916.

Application filed October "23, 1914. Serial No. 868,196.

75 all whom it may concern:

"Be it known that we, Josnrn D.- GAL-I LAGHER, a citizen of the United States, and a resident of Glen Ridge, jcounty of Essex, and State of New Jersey, and GEORGE 'CooK,

mental Brake-Shoes, of which the following is a specification.

Our invention relates to an improvement \-in brake"shoes for use upon rail-road cars, -and-likesvehicles, and more particularly to that'type orform which we term a segmental shoe," that is,ta shoe wherein the body or wearing portion isprovided with a plurality :of slots," recesses-or.grooves-extending inward from the wearing :face substantially to the reinforcementron the back,

' and disposed on either side of the transverse center of :the' shoe to divide it into a "tralityof-segrnents spaced apart. i In an application filed by one of .the'un- .25

dersigned, Joseph D. Gallaghenzon the 2nd day of May, 1913, and which application bears Serial Number 765,010, and which resulted in Patent Number 1,123,583, dated Dec. 29,'1914:, there has been described a shoe constructed inthis way, that is,.with a plurality of slots across the body "of the shoe, the purpose being to prevent the warping, twisting or distortion of the same due to the fact that a solid shoe contains such a quantity of metal thatwhen appliedto the tread of the wheel, the heat, generated by friction, tends to straighten out the body, thereby resulting in imperfect contact between the shoe. and the tread of the wheel. The shoe, being. subsequently cooled, assumes a slightly different curve to that which itoriginally had, so that when-again applied to the tread of the wheel, it contacts with the latter at the ends or toes of the shoe only, the wearing portions or areas of the shoe thus constantly shifting from time. to

time as the shoe is heated up and subsequently cooled. It appears, however, that in handling this slotted or segmental shoe, that is, in loading and unloading the same into and from the freight cars, and also during transportation, and also while being finished in the tumbling barrels, there is more or less danger of injuring the shoe 7 by cracking the metal adjacent to the reinforcemploy such means for tying or bonding the sections as above described as will be quickly .yvorn away when the shoe is put into service, allowing all the advantages inherent in .a segmental shoe to be utilized and availed of after a few applications tread-of the wheel.

of the shoe to the With these and other ends in view, the

invention consists in certain novel features OfCOIlStIUGtlOIL and combinations of parts as will be hereinafter fully described and pointed out in the claim.

In the accompanying'drawings, Figure l is a perspective View of a segmental shoe constructed in accordance with our invention. Fig. 2 is a sectional view taken on the line 2-.2 of Fig. 1. Fig. 3 is a sectional view taken on the line 33 of Fig. 2, looking in the direction as indicated by the arrow. Fig. 4 is a perspective View of a modifi ed form of the shoe. Fig. 5 is a sectional view taken on the line 55 of Fig. 4, looking in the direction as indicated by the arrow. Fig. 6 is a detached view in perspective of one of the devices illustrated in Figs.

4 and 5 for bonding the segments together. Fig. 7 is a view in perspective of a similar shoe showing a modified form' of the tie or bond. Fig.8 is a sectional view taken on the line 88 of Fig. 7 looking in the direction as indicated by the arrow. Fig. 9 is a detached perspective view of the tie or bond employed in the shoes illustrated in Figs. 7 and Referring to the drawings, 10 represents the body of a brake shoe ordinarily made of cast iron and provided with a key lug 11 about the center of its length for attachment to a brake head (not'shown), and with end stops 12, the shoe having at, or adjacent to, the back a reinforcing plate 13, suitably segments or sections constituting the body.

10, utilizing such means for so doing as may be readily anchored in the wearing face of the shoe during the process of casting, and

which will readily wear away when the shoe is put into service. These tying or bonding means may assume many and varied forms. For instance, in Figs. 1, 2 and 3, we have shown. as molded into the face of the shoe, expanded metal or wire mesh 15 extending practically across the entire wearing face of the shoe and bridging the slots or recesses 14, thus tying or bonding the several sec-- tions or segments of'the body together, and prevent their separation which would otherwise'happen. due to the slotting of the body and when the shoe is straightened out in handling or transportation. Instead; however, of employing wire mesh or expanded I metal. or like material, a tie or bond may be utilized for securing or holding in place the adjacent sections or segments, and

wherein such tie or bond extends but partway across the sections instead of entirely across, as in the case of expanded metal. For instance, in Figs. 4, 5 and 6, we have illustrated a tie which extends across the slot or groove 14, the tie comprising a bar or body 16 with enlarged ends 17, these enlarged ends affording a safe and secure anchorage in the body metal, this tie being buried in the body of the shoe during the process of casting, the lower surface or side thereof preferably lying flush with the wearing face or surface of the shoe. Again, as

illustrated in Figs. 7, 8 and 9, we have designed a tie or bond somewhat in the form of astaple, this staple comprising a flat side 18. to bridge the recesses or grooves 14, and

for holding the segments in their proper,

relative positions,. and preventing the shoe from straightening out, are made separate from, but firmly attached or anchored to, the metal. constituting the segments or body of the shoe, and that while We have illustrated these several forms of the device for accom plishing the objects of the invention, yet such may assume a Variety of forms, and thereforedo not constitut e in any wise a limitation of the invention,the gist thereof lying in the employment of means made separate from the-cast metal of the body of the shoe, and embedded, anchored, or-otherwise firmly secured in the wearing face of the shoe in such a way that the segments. or sections thereof may be prevented from separating to such an extent as will permit the cracking of the shoe and the bending of the reinforcing place embedded in the back of the shoe.

What we claim is A brake shoe comprising a cast metal body. with a reinforcin provided throughout its length with spaced back, said body transverse grooves dividing the body into a plurality of spaced segments, ductile mem-' bers embedded in the wearing face of said segments, bridging said grooves and bonding said segments together. 1

Signed atNew York, borough of Manhattan, county of New --York and State of New York, this 20 day of October, 1914.

JOSEPH D.-GALLAGHER. GEORGE COOK.

Witnesses:

ANNA V. WALSH. J 0HN CooK.

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