US1470480A - Brake shoe - Google Patents

Description

Oct. 9 1923. I I 1,470,480

I c. D. PETTIS BRAKE SHOE Filed Sept. 2, 1922 2 Sheets-Sheet 1 Oct. 9, 1923. 1,470,480

C.D.PETflS BRAKE SHOE Filed Sept. 3, 1922 2 Sheets-Sheet 2 Patented Oct. 9, i923.

NlTED stars-s CLIFTON D. PETTIS, OF KEV] YORK, N. Y.

Bani in snon.

Application filed September 2, 1922. Serial No. 585,895.

T 0 all whom t may concern.

Be it known that I, Curr-on D. Pnrris, a citizen of the United States, and a resident of New York, county of New York and State of New York, have invented certain new and useful sImprovement-s in Brake Shoes, of which the following is a specifi cation.

This invention relates to brake shoes but more particularly to means for attaching the same to the brake head and has for its primary object to provide an attaching lug of tough ductile metal which is securely anchored to the shoe body so that it will not become separated therefroinshould the body become fractured and which will permit the use of a broad reinforcing plate.

The many other objects and advantages of my invention will be better understood by reference to thefollowing specification when considered in connection with the accompanying drawings illustrating selected embodiments thereof in which:

Fig. 1 is a plan view of a blank embodying my invention;

Fig. 2 is a modified form of blank;

Fig. 3 is a. side elevation of the formed lug of the type shown'in Fig. 1;

Fig. 4 is the same as Fig. 8, end elevation;

Fig. 4 is a modification of the lug shown in Fig. 4; a

Fig. 5 is a perspective view of the lug shown in Figs. 3 and 4;

Fig. 6 is a plan view of the lug formed from the blank shown in Fig.-2;

Fig. 7 is the same as Fig. "6, side elevation;

Fig. 8 is a modified form of blank;

Fig. shown Fig. shown in Fig. 8, partially formed;

Fig. 10 is a side elevation of the lug formed from the blank in Fig. 8;

Fig. 11 is av plan view of the reinforcing plate shown in Fig. 10;

Fig. 11 is a plan view of a reinforcing 1n Fig. 8;

plate particularly adapted for use with the lug shown in Fig. 8

Fig. 12 is a plan view of the lug shown in Fig. 8*; and

Fig. 13 is a section on the line 1318 of Fig. 12.

Referring to the drawings, and particular- 8 is a modification of the blank 9 is a side elevation of the blank Fig. l. This blank is then bent on the dotted lines into substantially U-shape as shown in Figs. The reinforcing plate or back 20 is inserted in the alined slots formed by the oppositely disposed notches 21 in each of the upstanding walls 22 connected to the top plate 18 before the body of theshoe is cast. Alined apertures 23 in these walls are provided to receive the usual key which secures the shoe to the brake head.

Lateral extensions or wings 24 on each of the walls 22 enable a single broad reinforcing plate to be used and increase the rigidity and strength of the lug. The free ends 25 of the lug in tillSBlIlbOCllIllBIl'b are bent outwardly and the central portions thereof underlie the reinforcing plate. The

shoulders 26 formed by the notches 21 rest upon theupper face of the reinforcing plate to retain the lug at the proper height above the plate. The reinforcing plate or back with the lug in position thereon is then placed in the mold and the body is cast thereon in the usual manner. Instead of bending the free ends 25 of the lug outwardly in the manner described, these ends may be bent inwardly as shown intFig. 4". Referring to Figs. 2, 6 and'T, the central 9 portion 30 of each of the free ends 31 of the ug 32 is depressed on the lines 33 indicated in dot on the blank (Fig. 2). The

notches 34 form the slots to receive the reinforcingplate in the manner previously described. The free ends are bent on the lines 35 opposite the upper edge of these slots instead of at the lower edge as in the previous embodiment.

Referring to Figs. 8l1, the free ends 38 of the lug 39 are split at 40 and slits are formed at 41 in the blank (Fig. 8). In the shaping of the blank the parts 42 and 43 of the free ends are first bent down only as indicated in Fig. 9. Instead of sliding the lug upon the reinforcing plate in the manner previously described, the lug in the form shown in Fig. 9 is preferably placed above the plate and transversely thereof and then pressed downwardly thereon with the parts 42 and 43 acting as guides. In this construction the reinforcing plate 44 (Fig. 11) is preferably notched at 44 on opposite edges and the shoulders 45 enter and engage these notches. This prevents movement of the lug longitudinally of the plate. The parts 42 and 43 are then bent upwardly against the under face of the plate and the abutting ends thereof may be welded together if desired. This form of lug is shown in assembled position on the plate in Fig. 10.

Referring to Figs. 8, 11 12 and 13, the blank of the lug 47 in this embodiment is formed substantially the same as that shown in Fig. 8 except that the free ends48 are bent on the lines 49 at the upper edge of the slots 50 instead of at the lower edge thereof and no slits corresponding to 4:1 8) are provided. The parts 51 and 52 of the free ends are bent downwardly on the lines The notches 55 in the reinforcing plate 56 are formed sufficiently large to admit and fit the outwardly turned ends of the lug. After the lug has been placed upon the plate 56, the parts 51 and 52 are bent upwardly against the under face of this plate (Fig. 12). The upper face of the plate 56 is substantially flush with the outer portions of the outwardly turned free ends of the lug and the bent down portion of these ends lies within the notches. Fig. 13 shows the position of the free ends of the lug in the notches in the reinforcing plate.

I am aware that the structural features disclosed are capable of considerable variation without departing from the spirit of my invention and I reserve the right to make all such as fairly fall within the scope of the following claims.

I claim as my invention:

1. In a brake shoe, the combination with a reinforcing back, of an attaching lug of ductile metal including a top plate extending transversely of said back and provided on each side with a pair of downwardly projecting legs spaced apart to form a ke-yway aperture, the inner edges of the legs being notched to form alined slots through which said back passes.

9,. In a brake shoe, the combination with a reinforcing back, of an attaching lug of ductile metal including a top plate extending transversely of said back and provided at each of its side edges with a pair of l'aterally extended or spreading legs sufficiently spaced to form a keyway opening therebetween, the inner edges of said legs being oppositely notched to form alined slots through which said back passes.

3. In a brake shoe, the combination with a reinforcing back, of an attaching lug of ductile metal including a top plate extending transversely of said back and provided at each of its side edges with a pair of legs spaced apart sutliciently to form a keyway opening therebetween, the inner edges of said legs being oppositely notched to form alined slots through which said back passes and having flanges projecting from the lower portion thereof transversely of said plate.

4. In a brake shoe, the combination with reinforcing back, of an attaching lug of ductile metal including a top plate extending transversely of said backand provided at each side with a pair of legs spaced apart to form a keyway aperture therebetween and having their lower extremities connected the inner edges of the legs being oppositely notched to form. alined slots through which said back passes.

53. In a brake shoe, the combination with a. reinforcing back, of an attaching lug of ductile metal including a top plate extending transversely of said back and provided at each side with a pair of spreading legs spaced apart to form a keyway aperture therebetween and having their lower extremities connected, the inner edges of the legs being oppositely notched to form alined slotsthrough which said back passes.

6. In a brake shoe, the combination with a reinforcing back, of a substantially U- shaped attaching lug of ductile metal havin alined keyway apertures in the upstanding walls thereof and alined slots in said walls through which said back passes.

CLIFTON D. PETTIS.

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