Патент USA US2406067код для вставки
C. C. EURIT . ¿www AIR-COOLED BRAKE SHOE'y Filed Jan. 25, 1945 /0/ _,O. @___ 3mm fw ams, Patented Aug. 20, 1946 Y 2,406,007 UNITED sTATEs PATENT OFFICE 2,406,067 AIR-COOLED BRAKE SHOE Carl C. Eurit, Tulsa, Okla. Application January 23, 1945, Serial No. 574,117 4 Claims. (Cl. 18S-264) l 2 This invention relates to brake shoes and has special reference to a brake shoe adapted for use >ends of the respective sides. This arrangement is such that the baffles I5 extend substantially on railroad cars and the like. half way down the thickness of the brake shoe One important object of the invention is to provide an improved form of brake shoe having from the convex toward the concave side and extend backward to the concave side to embrace Ventilating means whereby, during application of the sides of the brake head H when applied thereto. These bailles incline from their for ward edges inwardly to a point opposite the con vex face of the shoe and then continue to extend the brake, the shoe will be prevented from be coming excessively hot. In the type of brake shoes forming the subject matter of this application it is quite common to 10 inwardly through curved portions as clearly use cast iron in their manufacture. When these shown in Figure 4. This makes an air duct be shoes are applied and become over-heated the tween each baifle and the respective side of the braking surface of the shoe frequently glazes shoe, the said air duct being wider at its mouth with the consequence that the braking effect is or receiving end and narrower at its rear end. greatly diminished. 15 Also the convex face of the brake shoe is pro A second important object of the invention is vided along the central line at each side of the to provide a novel form of brake shoe wherein rib I3 with a plurality of concave grooves Il ar over-heating and consequent glazing will be pre vented. A third important object of the invention is to provide a self-cooling brake shoe having means for gathering a current of air and directing it inwardly across the shoe. With the above and other objects in View the ranged in plan to form X-shaped ñgures with drawing, and particularly claimed. In the accompanying drawing, like characters concave side than at the convex side. By means of this arrangement air can flow adjacent arms of the figures connected. Fur thermore, grooves I8 extend from the arms of the X-shaped figures outwardly to open into the channels formed by the bai'lies. At the end of each arm of these figures and also at the center of each X-shaped figure there is provided a vent invention consists in certain novel details of con 25 opening I9 which extends from the convex to the concave face of the shoe and which tapers struction and combinations of parts hereinafter throughout its length so that it is smaller at the fully described, illustrated in the accompanying» of reference indicate like parts in the several 30 through the channel formed by the baffles and views and: since brake shoes never fit closely on brake Figure 1 is a side elevation of a brake shoe heads, can work its way between the heads and shoe into the openings I9 thus cooling the shoe. constructed in accordance with this invention. Furthermore by means of the bail‘les I5 heat radi Figure 2 is an elevation from the convex side of such a shoe. ating ñns are provided and likewise all the open Figure 3 is a fragmentary section on the line ings I9 add to the heat radiating surface. It 3_3 of Figure 2. will now be plain from this construction that the brake shoe will be e?fectively cooled and, since Figure 4 is a section on the line 4-`4 of Fig ure 2. the shoe is kept cooled, no glazing of the braking The brake shoe as here shown is intended for 40 face of the shoe wil occur. What is claimed is: use with a brake head I-I, indicated in broken 1. A brake shoe having a body provided with lines, of the type adopted by the Master Car a series of Ventilating perforations, and air gath Builders Association and known as an M. B. C. ering baflles extending along and spaced from brake head. The shoe therefore has an arcuate body I0 having a concave face II for engaging 45 the sides of said body. the rim of a wheel W shown by broken lines in 2. A brake shoe having a body curved to pro Figure 4, and a convex face I2 engaging the vide opposite convex and concave faces, said brake head. The convex side of the shoe is pro body having Ventilating perforations extending ` vided with the usual transverse rib or boss I3 therethrough between said faces, and air gath centrally of its height for engagement with the 50 ering bañles extending along and spaced from appropriate portion of the brake head and also the sides of said body. with terminal ribs I4 for like purposes. At each 3. A brake shoe having a body curved to pro side of the body Iû there is provided an air vide opposite convex and concave faces, said body gathering baille I5 which is carried to the body having Ventilating perforations extending there side by a plurality of ribs I6 at the center and 55 through between said faces, said body having 2,406,067 3 channels connecting adjacent perforations, and channels connecting adjacent perforations, said air gathering baffles extending along and spaced from the sides of said body. body having the convex face provided With grooves connecting adjacent perforatîons, and air gathering bañles extending along and spaced 4. A brake shoe having a body curved to pro vide opposite convex and concave faces, said body 5 from the sides of said body. having Ventilating perforations extending there through between said faces, said body having CARL C. EURIT.