US2068959A

US2068959A - Brake

Info

Publication number: US2068959A
Application number: US2652A
Authority: US
Inventors: Montgomery W Mcconkey
Original assignee: Bendix Brake Co
Current assignee: Bendix Brake Co
Priority date: 1935-01-21
Filing date: 1935-01-21
Publication date: 1937-01-26
Anticipated expiration: 1954-01-26

Description

M. W. M CONKEY BRA KE Filed Jan. 21, 1955 j Patented Jan. 26, 1937 I BRAKE Montgomery W. McConkey, South Bend, lnd., assignor to Bendix Brake Company, South Bend, lnd., a corporation of Illinois Application January 21, 1935,-Serial No. 2,652

Claims.

This invention relates to brakes, and is illustrated as embodied in' an internal expanding brake for an automobile.

An object of the invention is to utilize, in form- 5 ing the shoes of the brake, rolled angle-section steel, cut and formed in segments adapted to have the brake lining secured thereto. Preferably these segments are cut from a rolled T-section steel ring, although many of the advantages of the invention can be secured by forming'into arcuate segments pieces cut from a straight. rolled' angle-section, preferably of T- section.

One feature of the invention relates to providing a shoe formed of such a segment with sepa rately-formed anchor-engaging means, such as a fitting shown as comprising two stampings permanently secured to the opposite sides of the web of the shoe.

Where used in an overlapping shoe brake, as illustrated, the anchor stampings of one shoe are deflected into engagement, and preferably welded or otherwise secured together to form a doublethickness strong anchor arm, while those of the adjacent shoe are spread apart to form-fa pair of spaced arms straddling the double-thickness arm.

The above and other objects and features of the invention, including various novel combinations of parts and desirable particular constructions, will be apparent 'from the following description of the illustrative embodiment shown in the accompanying drawing, in which:

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

Figure 2 is a bottom plan view of the lower end of one of the two end shoes of the brake;

"Figure 3 is a similar plan view of the end .of the center shoe;

Figure 4 is a section on the line l-l of Figure 1 and shows the manner of connecting two of the shoes; and I Figure 5 is a section on the line 5-5 of Figure 1 showing the manner of anchoring two of the shoes. a

The illustrated brake comprises a drum 2 rotating with the wheel (not shown), at the open side of which is arranged a support such as a backing plate 46. I The brake is provided with any suitable return springs, steady rests, stops, and the like (not shown), and with operating means illustrated-as a double cam 30.

The illustrated brake is of the three-shoe type. Twoend shoes BI! and 92, and a center shoe 84, are arranged end to end, with shoes II and 92 actuated by thecam 30 and the center shoe 9| actuated by the end shoe 92.

Each of the shoes illustrated has a body portion formed of an arcuate segment of rolled T-section steel, having its stifiening web 26 arranged substantially in its center line. These segments are preferably cut from a rolled T section ring, as described in my Patent No. 1,875,081, dated August 30, 1932. However, many of the advantages of my invention can be secured by bending into arcuate segments, of the sort illustrated, straight pieces-of rolled angle-section steel.

Each of the

end shoes

90 and 92 has arranged at its lower end, and preferably welded or otherwise permanently secured thereto, a fitting shown as consisting of two

steel stampings

96 and 98 engaging the opposite sides of the web 26 and formed at their ends with coaxial integral bearing sleeves adapted to embrace a pivot.

The fittings of shoe 82 straddle the end of the web of shoe 94 and areconnected thereto by a floating pivot 82. The fittings of shoe 9!] are mounted on a fixed anchor pivot 18 carried by the backing plate 46.

Shoe 94 has at its end, and preferably welded or otherwise permanently secured thereto, a fitting consisting of two steel stampings I00 engaging the opposite sides of its web 26, and preferably deflected intoengagement with each other and welded or otherwise permanently secured togather to form a double-thickness anchor arm.

These fitting members have at their ends integral coaxial bearing sleeves'embracing an anchor pivot 8|! carried by the backing plate. The above-described double-thickness arm I00 is straddled by the

parts

96 and 98 of shoe 90. The anchor passes through slots 91 in the

members

98 and 98, and the anchor 18 passes through a similar slot 99 in the members "III, as is usual in three-shoe brakes of the type illustrated.

While one illustrative embodiment has been described in 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. This application is contin ation in part of my Patent No. 1,875,081 dated August 30, 1932. v

1. A brake shoe having a bination with a pair of separate parts secured to opposite sides of said web at its end and projecting beyond said end and deflected into engagement with each other to form a double-thickness pivot arm ' 2. A brake comprising a pair of shoes, each instiii'ening web,incomv 50 eluding an arcuate angle-section segment having a stiifening web, and one having centrally-arranged separately-formed anehor-eng sins means secured to the end of its web and projecting beyond the end ofsaid web, and the other having secured to and projecting beyond the end 01' its web a pair of separately-formed anchor parts straddling said means.

3; A brake comprising a pair of shoes, each including an arcuate angle-section segment having a stiflening web, and'one having a pair of anchor-engaging members secured to the opposite sides of the end 01' its web and deflected into engagement with each other and projecting in the central plane oi the shoe beyond the end or said web, and the other having secured to and projecting beyond the end of its web a pair of separatelyformed anchor parts straddling said means.

4. A brake comprising a pair of shoes, each in- Patent No. 2,068,959-

someones! w. neconm;

' thereof.

eluding an angle-section segment having a stir!- ening web, and one having arranged at the opposite sides of said web at the endof the shoe a pair of stamped parts projecting beyond the end of said web and formed to straddle a pair of separately-i'ormed anchor parts secured to the web of the other shoe and projecting beyond the end 5. A brake comprising a pair of shoes, each including an arcuate T-section segment, the stem of the T forming a stiflening web, one shoe having permanently secured to the opposite sides of its web at its end a pair or separate parts projecting beyond said end as spaced-apart and substantially parallel pivot arms. and the other shoe having a pair of separate anchor parts secured to its web and projecting beyond the end theme! to be received between said arms. 1

MONTGOMERY W. MCCONKEY.

omen-rears or commoner;

Itis hereb'y certified that error appears injthe printed specification ofthe above numbered patent requiring correction as follows Page 1, second column, line 19, claim 1, strike out "having! and insert insteadas words couprisinganareuate integral T-section segnentflzhe stem of the "1' form ing; andthat the said Letters Patent 'ehouldbe read with this correction therein that the some may conform to the record of the case in the'Patent Office.

Signed and sealed this 25th day of Jarmary,-' A. n. 19 8.

(Seal) Henry Van lu-sdsls, Acting Go-iissi'oner of Patents.

eluding an arcuate angle-section segment having a stiifening web, and one having centrally-arranged separately-formed anehor-eng sins means secured to the end of its web and projecting beyond the end ofsaid web, and the other having secured to and projecting beyond the end 01' its web a pair of separately-formed anchor parts straddling said means.