US783087A - Brake-shoe. - Google Patents

Description

PATENTED FEB. 21, 1905.

SSHBETS-SHEET 1.

W. P. TAYLOR.

BRAKE SH APPLICATION FILED '7, 1904.

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k M H I g S I $2 mm A ,h.

No. 783,087; PATENTED FEB. 21, 1905.

' W. P. TAYLOR.

' BRAKE SHOE.

APPLICATION FILED NOV. 17, 1904.

3 SHEETS-SHEET 3.

Fig. 11.

Witnesses." tnventor.

Attormy.

No. 783,087. I

'UNITED STATES Patented February 21, 1905.

WILLIAM PERRY TAYLOR, OF BUFFALO, NEW YORK.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 783,087, dated. February 21, 1905.

Application filed November 17, 1904. Serial No. 233,102i

frictionally contact with the wheel-surface,

and particularly to shoes constructed in one piece.

I homogeneous reinforced shoe.

reinforced shoe. I The principalobject of the invention is to strengthenthecast body'of the shoe throughare entirely surrounded and rigidlygripped throughout on all sides by the contraction of One of the specific features of the invention has reference to one or more strengthening-rods which extend longitudinally through the cast shoe-body near the outer surface or back thereof, but entirely beneath the surface, being completely surrounded and gripped by the cast metal of theshoe-body throughout their length.

Another feature consists in roughening the surface, of the rods, so that it will be more rigidly and strongly held in the cast body,

thereby forminga more intimate alliance between the two metals of the shoe-body and rods and prod ucing a practically homogeneous out by rods or other reinforcing means, which the shoe-body'in cooling.

Other features and advantages and objects will behereinafter described and perhaps v claimed, reference being bad to'the accompanying drawings and the following descrip- Figure 1 is a longitudinal section through the brake-shoe on line a a, Fig. 7 Fig. 2 is a detached view of one of the strengtheningrods. Fig. 3 is a longitudinal section through the brake-shoe on line b b, Fig. 1, the strengthening-rods being shown in full. Fig. 1 is a longitudinal section through the brake-shoe on line 0 0, Fig. 9, showing another form of strengthening-rod. Fig. 5 is a detached view of the other form of strengthening-rod. Fig. 6 is a longitudinal section through'the brakeshoe on line (ZtLFig. 4. Fig. 7 is an end elevation of the brake-shoe shown in Figswl and 3. Fig. 8 is a transverse section through the brake-shoe on line 6 6, Fig. 1. Fig; 9 is a section through the brake-shoeon line ff, Fig. 4. Fig. 10 is a section through the brakeshoe on line g g, Fig. 4.- Fig. 11 is adetached end.view of the form of strengthening-rod shown in Figs. 4, 5, and 6. Fig. 12 is a transverse section through the strengthening-rod on line it h, Fig. 5.

In referring to the drawings for the details of construction like numerals designate like parts.

The principal disadvantage with brakeshoes which are provided with reinforced backs is that the reinforcing-plate is not secured or fastened firmly enough to the shoebody to hold a portion broken therefrom from detaching itself and falling.

' In my improved construction I use one or more rods, preferably two, instead of a plate around which the metal of the shoe-body is cast complete at one operation and in one piece, so as to entirely surround the rods, which are firmly gripped continuously throughout their length within the body by the contracting of the. metal in cooling.

In the. adaptation shown in Figs. 1, 2', 3, 7, and 8 two rods 1 are used which are curved to the curvature of a brake-shoe body 2 and extend longitudinally throughout the shoebody from end to end thereof, being embedded and completely surrounded 'by the cast metal of the said body 2. To still further increase the securing of the rods in the cast body, they may be roughened, as shown at 3, thereby providing on the peripheries of the rods a tion of the cast bodyupon the rods anchoring number of minute recesses,into which the cast them so rigidly in place and producing such metal will extend, and a number of minute projections, which will embed themselves in 1 the surrounding portions of the cast body and produce an interlocking of the contacting surfaces of the rods and castbrake-body.

The rods 1 preferably are two in number and extend parallel to each other, each extending throughout one of the upper corners of the brake-shoe body, and are preferably of circular or equivalent shape in cross-section.

In order to produce a more perfect alliance between the surface of the rods and the surrounding surface of the cast body, the rods are first heated before being placed in the mold and the molten metal poured around them after theyare placed in their proper position.

In cooling the cast metal contracts and grips the rods continuously throughout their length upon all sides, thus forming a most intimate contact between the two metals and practically producing a .homogeneous reinforced brake-shoe.

In the adaptation shown in Figs. 4:, 5,6, 9, 10, 11, and 12 the ends of the rods are joined to form a loop 41:, which is entirely within the cast-metal body and has its ends 5 bent at an angle and extended into the end abutments 6 of the brakeshoe body to reinforce and strengthen said abutments' and also more' securely anchor theloop in place. The surface of the loop 4 may be roughened; as shown at 7, if desired.

The term reinforcing-rod is used in the specification to differentiate from the reinforcing-plates previously used in the art and which were nearly as broad as the body of the brakeshoe itself, and it is to be understood that by the said expression reinforcing-rod ,I mean an element either formed of one single piece throughout or formed of a plurality of mutually-connected pieces which are comparatively narrow in width relatively to the brakeshoe body, whereby no broad surface is presented to the molten cast metal, so that the opposed surfaces of the two metals are in intimate contact and practically joined throughout.

The great advantage of this improved shoe is therigid fastening and gripping of the rods within the cast-metal body, which prodii'ces a stronger and better-wearing shoe that is less liable to break under abnormal stress and which will wear closer than the ordinary shoe, the shoe being good practically until worn down to expose the rods.

By casting the metalbody complete in one piece and entirely around the rods, which are preferably of wrought-iron or steel, a brakeshoe isproduced which is for all essential purposes practically homogeneous, the contracan intimate contact between the surfaces that it may be fairly said that they unite and form' practically a solid reinforced one-piece brake- .shoe.

It will be noted that in this improvedshoe the rods or other reinforcing. meansare unsupported except by the metal of the body, which is cast complete in one piece and entirely surrounds the reinforcing meanson all sides throughout.

I claim as my invention* 1. A solid homogeneous reinforced brakeshoe comprising a metal body cast complete in one piece and a rod extending through said body and grippedthroughout on all sides by the contractionof the cast body in-cooling.

2. A solid homogeneous reinforced bralreshoe' comprising a metal body cast complete in one piece and a rod extending longitudinally throughout and. entirely beneath the surface of said body and gripped throughout on all sides by the contraction of the cast body in cooling. I I 3. A brake-shoe comprising a metal body cast complete in one piece and a roughened surface rod extending through said body and gripped on all sides by the contraction of the cast body in cooling.

4. A solid homogeneousreinforced brakeshoe comprising. a metal body cast complete in one piece and a reinforcing means, including at least in part two parallel rods extending longitudinally through the opposite upper corners of the cast body and entirely beneath the surface of and surrounded and gripped on all sides throughout by the contraction of the cast metal of said body in cooling.

5. A brake-shoe comprising .a metal body 'cast complete in one piece and a reinforcing means, including at least in part two parallel roughened surface rods extending longitudinally through the opposite'upper corners of the cast body and entirely beneath the surface of (and surrounded by the cast metal of said he y. v

6. In asolid homogeneous reinforced brakeshoe, a reinforcing means including at least in part a rod, anda body cast complete in one 'piece entirely around and-gripping said rod throughout ,on all sides.

7. A brake-slice comprising a body cast complete in one piece with areinforcing-rod therein entirely surrounded and gripped throughout by the contractionof the metal of said body in cooling, whereby the opposed surfaces of the metal body and the reinforcing element are in contact continuously throughout and practically unite to form a solid homogeneous reinforced shoe, substantially as set forth.

8. Abralre-shoe comprisinga body castconiplete in one piece with a reinforcing element therein; said element being comparatively solid homogeneous reinforced shoe, snhstannarrow in width and entirely surrounded and tially as set forth. gripped throughout by the contraction of the metal of said bodyin cooling, whereby the op-' WILLIAM PERRY TAYLOR posed surfaces of themetal body and the re- Witnesses: v inforcing element are in contact continuously A. J. SANGSTER,

throughout and practically unite to form a Geo. A. NEUBAUER.

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