US1609557A

US1609557A - Brake shoe

Info

Publication number: US1609557A
Application number: US123289A
Authority: US
Inventors: Brie Ludger E La
Original assignee: Bendix Brake Co
Current assignee: Bendix Brake Co
Priority date: 1926-07-19
Filing date: 1926-07-19
Publication date: 1926-12-07
Anticipated expiration: 1943-12-07

Description

De@ 7 1926' 1 E` LA BRIE BRAKE SHOE Filed July 19,

INVENTOR Lunc'f-:R ELABmE haar@ ATTORNEY Patentefi Dec, 7, 1926.'

ITE-n smiles PATENT OFFICE LUDGER E. LA. BRIE, 0F SQUTH BEND, INDIANA, ASSIGNOB T0 BENDIX BRAKE OOM- PANYNOF CHICAGO, ILLINOB, A `(JORIECIRATIN 01' ELLINDIS.

om enfers.

Application flle Iuiy le,

This invention relates to brakes, and is illustrated as embodied in, a novel shoe for an internal expanding automobile brake. An object of the invention is to provide a light and inexpensive but very strong hreh'e shoe, preferably adapted to overlap en ov jacent shoe of the seme brake, or if desireeh to overlap such 'a shoe at euch ,f

Having this obect in mind, on importent feature of the invention relates to '.{orizoing at leest e. part of the stiiening Weis of the shoe, for example at one or both enfle where it is desiredto overla the shoes? -shapeol. in cross-section radially of the shoe. Thai is, the web branches vsome distance inwardly from the lfriction portion of the shoe to form a Channelehaped pocket which mayV overlep the end of an adjacent shoe.

rlhis leaves a ver57 narrow web immeeli ately adjacent the friction face', which doos not interfere with riveting the lining to 'the shoe, and at the same' time obviatee any necessity of attaching a separate plate or like across the spaced parts of the web, support the brake lining.

i prefer to form the shoe of pressed metal, with two flanges engaging each other and jointly forming the above-described stillen-I ing weh unil being spread apart to form the branching of the Weo. Various features of novelty relate to details of this spreading apart of the llanges some-distance inside of the friction portion of shoe@ The above und other ohiects and features 'of the invention, including various novel and desirable details of construction, will be apparent l'ronu the following descrip-tien of the illustrative emhocliinentshoivn in the accompanying drawing?, in which:

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

Figure 2 is a partial section on the line- Q-2 of Figure l, showing the overlapping of two of the shoes;

Figure 3 is a section through the overlapping parts of the shoes, on either of the lines :sAlOFigure 1 or Figure 2;

Figure e is a partial section on the line #4 oi Figure showin the pivot connecting two ot' the shoes; an

v eng 192e; smal No. 123,289.

Fi ure 5 is a section through any one of the 's toes, on ,any one of the lines 5-5 of Fi'ure i. l

`lie brake selected for illustration includes a rotatable drum 10, et the open Side which is e Support such as a backing plete l2, and' Within which are arranged three hrehe shoes 14:, 16 and 18, shoes 14 i8 preferably .being interchangeable. Shoe i6 is anchored on e pivot 2G carried hy the' cooking plate, while shoes le and ere respectively connected. to shoe lo by

pivots

22 and 24.

The breite is applied by forcing shoes ifi and i8 eport oy means such es e double com 2t, against the resistance of e, return spring 28, shoe i6 being forced toward the drum egeinst the resistance of en auxiliery return 3Q lo the .shoes 14 sind i8 ect-ing through pivots 22 and 2e "The idle position of shoe lo meg he determined by on adjust sible gro-ovegliv eccentric 32 interlocking with on the ont?. of oivo't end toward whieh pivot is urgeci hy spring 3G.

in the iiiostrated arrangement each of the shoes anni 18 is formed by 'riveting or spot-welding or otherwise securing heele to nach two steinpings, eeeh having on outer cylindrical Range le su porting one siete of the breite lining 36, an 4which have lenges 36 jointly forming the stilening web of the shoe, end formed with en opening e() lar enough to afford ample clearance for anc or pivot Q0, which tekes the torque of` all three shoes. Integral hearings or hesses 42 may be drawn outwardly on flangesl 38 to embrace the several pivots, and flanges 38 may be grooved to forni strengthening ribs 44. There4 may also be short stifen-A ing flanges 46 along the inner edges; of the stampings.

The present invention relates to certain features of the brake shoes, es for example shoe 16, Whether or not they are used in the particular brake descri'be; ebove. In a general way, shoe 16 may be like

shoes

14 and 18 in construction, having the flanges 84 supporting the brake lining 36, andv flanges 38 inte forming the sti ening web of the shoe.

According to an important feature of the invention, however, the flanges 38 of shoes i6,

al therewith and jointly preferably et the ends o the shoe, after continuing together some distance redieliy inward (see *igure 3) are spread eport to form spaced portions straddling the end of shoe 1s (or 18). Thus this part ot' the shoe is i-shaped in cross-section radiciw ly of the shoe, with the stem of the Y immediately adjacent the friction portion Sie of the shoe. This part of the shoe is also ishaped in section iengthwise of the shoe in thershoe 16 illustrated, as appears in Figure 2 or Figure 4, since the center of the shoe is of T-section- The nlove-descried construction forms a. channel-shaped pocket et each end of the shoe, overlapping the end lof the adjacent shoe 14 or 1S, und with the sides of the pocket overlapping shoe 14 projecting es mounting arms ivoted on the enchor 20 and offset Within t ie curve of the shoe to Yclear the end of the friction portion of shoe 14.

-While one very desirable construction has been described in detail, it is'fnot my intention to limit the scope of the invention to theta articuler construction,v or otherwise thon gy the terms of the appended claims.

' l chum:

1; An arcuate brake shoe how/ingerir. cylindrical Yiriction portion and o. stitiening web between theY edges of the friction Jortiom et least o port of the stifening we being Y-shaped in radici. cross-section.

2. An credete brake shoe having a cylindrcsl friction ortion and o. sti'cning web between the e ges o the friction portion, at leest o. port oi the stiiening web' being Y-shoped in radial crosssection, with the stem of the Y adjacent the friction poi-tion and with.' the two bronches forming parts spaced from each other crosswise ot the shoe.

3. An arcuate brake shoe having a cylindricel friction portion and a, stifening web between the edges of the friction portion, et least one end of the stiiiening web being if-shaped in radio1 crosssection, with the stein or' the li" adjacent the friction portion of the shoe.

An trennte ioriihe shoe having s.. cylindricciilrictioii portion Lind n stiiening; weh, the sticninfg; 'web end the friction portion jointly being* "ishs'gied in radial crosssec tion in the central pert o the shoe, end with Athe stiiieningg weh et leest at one end oi the shoe branching to be i1shapcd in crossseo both rodiolly end lengthwise of the shoe.

5. An arcuate brake shoe having e. cylindricei friction portion and a stiening web, the stiii'oning web ond the friction portion jointl 'being T=shaped in radial cross-se"u tion in the central part of the shoe, sind withV the stiii'ening web at, least et one end oi the shoe if-shaped in cross-section rediiilly of the shoe.

6. An arcuate broke shoe having e, cylindricsl friction portion and e. stiii'ening sich,

oniiir the stiii'ening; weh 'and the friction portion" jointly being; 'ip-shaped in radio1.` cross-sec- 1. N 1 l tion in ne @entrai port ci the shoe, ond with the stiiieningg web et both ends oi the shoe shziped in cross-section rad is of the shoe.

8. .ein nrcuotc broke slice bevil/xg s. cylini drics friction portion end :i stiiiening web, the stifiening et one end of the shoe being "if-shaped in redini cross-section with 'the stein edwcont the friction portion, and

with the sides of ihe if-section part of the' web projecting beyond the end of the friction portion to form mounting firms.

9. fin' nrcnste brake shoe having e cylindrical friction portion und e. stiffening. weh7 the stifiening weh nt one end ont the shoe heling; if-shaped in radici oross-section with the stein adjacent the friction portion, ond with the sides oi the Y -section port of the web projecting beyond the endo" the friction portion to forni mounting arms, the erins being oiset within the curve of the shoe to stroddle the end of un edjucent shoe end clear the end of the friction non tion oi' sind adjacent; shoe.

10. An arcuate broke slice of pressed metal parts including a cylindricui friction portion und two iisnges jointly forming n stiiening web, said flanges for at leest :i part of the len in engagement immediately adjacent the friction portion and being spread apart from each other ns they are continued inwardly radially of the shoe, to form et lessi. :i part oit the web-of "vshope in radici cross-section.

ll. An ercniitc. broke shoe of pressed niet; i parte incindin: s cylindiicei friction portion und two icngesfyointiy forming o stiiening web, "sii 'fes el'. leest :it one end ci shoe :ngagemcnt 'ienne disto-dy adjacent :ne mamon portion and he ing spread sport zrozn each. other as they ere' continued. inwordiy rndieiiy oi the shoe, to form et least a port of the web oi? 'if-shops in redini cross-section.

12. in arcuate eroico shoe oi pressed metei ports inch cyiindricel 'ction portion and tivo @to Ointly e stiiifening weh, sind riesiges kheing in. engogemont with cosh other in the central wat ot the shoe 'find When teken with the ti'riction portion being substcntioln T-slispod in radial cross-sectiomond et esst it one l Sii necesa? end of the shoe being in engagement with each other immediately adjacent the friction portion and then spread apart' to form a channel-shaped pocket at said end of the shoe.

' of the shoe and when taken with the friction portion being substantially T-shaped in radial cross-section, and at both ends of the shoe being in engagement with each other immediately adjacent the friction portion and then spread apart to forni-a channelshaped pocket, th'elsi'des ot one of said pockets being continued as spaced mounting arms.

14. An arcuate brake shoe of pressed metal parts including a. cylindrical friction portion and two flanges jointly itnniing a stili'ening web, said flanges being in engagement with each other inthe central part of the shoe and when taken with the friction portion being substantially T-shaped in ra dial crosssection, and at least at one end of the shoe beingin engagement with each other immediately adjacent the friction portion and then spread apart to form a channelshaped pocket at said end ot' the shoe, the innges where they form the pocket sides being provided with bearings to engage pivoting means.

15. An arcuate brake shoe of pressed metal parts including` a cylindrical friction portion and two flanges jointly forming a stiiening web, said flanges being in engagenient with' each other in the central part of the shoe and when taken' With the friction portion being substantially T-shaped in radial cross-section, and at both ends of the shoe being in engagement With each other in'nnediately adjacent the friction portion .and then spread apurtto form a channelshaped pocket, the sides of one of said pockets being continued as spaced mounting arms, the flanges where they form the pocket sides being provided with here to engage pivoting means.;

16. An arcuate brake shoe built i two generally L-section stanipings back to back, with outer cylindrical fla, jointly forming the friction portion o shoe, and. with the .inner .flanges :ici forming a stitlening web, stilfeniniL flanges at least for part nf the length shoe being spread apart some distant side of the friction portion to form a nel-shaped pocket.

1T, An arcuate brake shea huilt up two generally ila-section stampings fastener. hack to bach, with outer cylindrical iiang jointly forming the friction pertion of shoe, and with the inner flanges joint forming a stifening web., said stilleninf wel,

flanges at least at one end of the i spread apart some distance initieel friction portion to forni a channel-shaped pocket.

18. An arcuate brake shoe built im two generally tfsection stainpings if hack to back.) with outer cylindrical f g., jointly forniing the friction portion of the shoe, and with the inner ilanges jointly Forming a stiliening web, said Stilening web flanges at both ends of the shoe 'being spread apart some distance inside of the friction portion .tn form channel-shaped pocketso 19. An arcuate brake Vshoe built up of S two generally lsection stampin'gs fastened back to back, with outer cylindrical lianges jointly forming the friction portion oi. the shoe` and with, the inner flanges jointly forming a s till'ening web, said stiiiening web flanges at least at. one end ofthe shoe being spread apartsorne distance inside of the friction portion to forni a channel-shaped pocket, and with the flanges forming the sides ot said pocket projecting beyoi'id the end of the friction portion to form spaced mounting arms.

ln testimony whereof, signed my name.

- Limena n; LA nain,

l have hereunto