US1636003A

US1636003A - Brake shoe

Info

Publication number: US1636003A
Application number: US110832A
Authority: US
Inventors: Brie Ludger Elize La
Original assignee: Bendix Brake Co
Current assignee: Bendix Brake Co
Priority date: 1926-05-22
Filing date: 1926-05-22
Publication date: 1927-07-19
Anticipated expiration: 1944-07-19

Description

July 19, 1927. 1,636,003

L. E. A BRIE BRAKE SHOE Filed M ay 22. 1926 INVENTOR LUBDYGER E.LABR\ E 5 .l FGnS ATTORNEY Patented July 19, 1927.

UNITED STATES PATENT OFFICE.

LUDGER ELIZ LA BRIE, OF SOUTH BEND, INDIANA, ASSIGNOR T BENDIX BRAKE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

BRAKE SHOE.

Application led May 22,

This invention relates to brakes and is illustrated as embodied in an internal expanding automobile brake. An object of the invention is to secure great strength in a shoe utilizing inexpensive and readily formed parts by reinforcing an outer cylindrical band forming or carrying the brake-lining by means of a novel stiffening member, preferably of channel section, secured to the inner face of the outer cylindrical part or band. One advantage of this construction is that it permits the use of bands of different widths with the same stiffening parts, to secure different widths of brake shoes without unduly mulitplying the number of parts to be manufactured.

Other features of the invention relate to forming a channel section member, such as the stifi'ening member described above, so that it projects beyond the end of the shoe to form, a pair of spaced arms, to an improved means of forming extended bearings for pivots for the shoe, and to other novel combinations of parts and desirable particular constructions which will be apparent from the following description of one illustrative embodiment shown in the accompanying drawings, in which:

Figure 1 is a vertical section through the brake just inside the head of the brake drum, and showing the shoes in side elevation;

Figure 2 is a partial section on the line 2-2 of Figure 1 showing the means for taking the braking torque;

` Figure 3 is a section through one of the end shoes on the line 3 3 of Figure 1;

Figure 4 is a section through the center shoe on the line 4-4 of Figure 1; and

Figure 5 is a partial section on the line 5 5 of Figure 1 showing a pivoted connec'tion between two of the shoes. r

The brake selected for illustration in cludes adi-um 10, at the open side of which there may be arranged a backing plate or other suitable support 12 and within which are arranged the three

shoes

14, 16, and 18 of the brake,

shoes

14 and 18 preferably being identical and interchangeable.

Shoe 16 is shown anchored on a pivot 20 carried by backing plate 12 and passing through a relatively large opening 22 in shoe 14, while

shoes

14 and 18 are both pivotally connected to shoe 16 by means of

pivots

24 and 26. The shoe may be applied by means 1926. Serial No. 110,832.

such as a double cam 28 arranged to force

shoes

14 and 18 apart against the resistance of a. return spring 30, the

shoes

14 and 18, particularly the shoe 18, there-upon forcing the shoe 16 toward the drum against the resistance of an auxiliary return spring 32. lVhen the brake iS not applied, the spring 32 holds the shoe 16 in an idle position determined by an eccentric adjustable stop 84 interlocking with a groove in the end of pivot 24 formed by a flange 86. The pivot 26 preferably has a relatively large head 36 shdably engaging the backing plate 12 and, if desired, cotter pins 40 may be provided in the ends of the pivot 26 and the pivot or anchor 20 to prevent axial movement of the shoes.

Each of the

end shoes

14 and 18 is formed of acylindrical part or band 42, shown-as being a section of hot-rolled stock, to which the brake-lining 44 is secured and which is reinforced by a stitfening web formed of two

sheet metal stampings

46 and 48 secured by welding or riveting back to back and having outer flanges 50 welded or riveted or otherwise secured to the inner face ofy the band 42. Preferably the

stampings

46 and 48 are stifl'ened by short flanges 52 at their inner edges, and I prefer to run a flange entirely around the edge of each of the stampings so that the

flanges

50 and 52 form sections of such a continuous flange. It will be observed that the stiif'ening web formed by

stampings

46 and 48 may be used to form shoes of different widths by varying the width of the part or band 42. lVhere the

shoes

14 and 18 are mounted on the

pivots

24 and 26, I prefer to weld or' otherwise. secure separate rings 54 to form extended bearings for the pivots.

The center shoe 16 is also provided with a hot-rolled section or the like forming a band or cylindrical part 56 carrying the lining 58, but the stiffening means in this case is in the form of a channel section member `6() welded or riveted or otherwise secured to the inner face of the band 56 and whose

sides

62 and 64 form a pair of spaced stiffening parts. I prefer to spin over the inner edges of the

side flanges

62 and 64 to form short outwardly extending stiflening flanges 66. Where the pivot 24 engages the sides of the shoe 16, I prefer to secure separate rings 68 to the outersides of the

parts

62 and 64 to form extended pivot bearings. I also may provide similar rings 68 for the pivot 26 and the pivot or anchor 20. It should be noted that the side ilanges 62 and 64 project a considerable distance beyond the end of the outer part or band 56 to form spaced arms offset within the curve of the shoe and preferably mounted on the anchor 20.

While one illustrative embodiment has been describedin detail, it is not my intention to limit the scope of the invention to that particular embodiment or otherwise than by the terms of the appended claims.

I claim:

1. A brake shoe comprising two stiflening flanges extended to form a cylindrical section of fixed Width integral with the flanges, in combination With a lining-carrying band secured to the cylindrical section and of different Width than said section.

2. A brake shoe comprising two spacedapart stiffening flanges extended to form a connecting cylindrical section of fixed Width integral with the flanges, in combination with a lining-carrying band secured to the cylindrical section, said flanges projecting beyond the end of the band as a pair of pivot arms.

3. A brake shoe comprising, in combination7 a cylindrical band, and a channel-section part secured to said band and forming stiffening means therefor and having its sides extended beyond the end of said band to form a pair of projecting arms.

4. A brake shoe comprising7 in combination, a cylindrical band, and a channel-section part secured to said band and forming stiffening means therefor and having its sides extended beyond the end of said band to form a pair of projecting arms, said arms being provided with openings at theirends to embrace a pivot and With openings near the end of the band for the pivot of a shoe overlapped thereby.

5. A brake shoe comprising a pair of flanges formed with alined openings for a pivot, and having separate rings secured to the sides of the flanges about the openings to form extended pivot bearings.

In testimony whereof, I have hereunto signed my name.

LUDGER ELIZ LA BRIE.