US815612A - Brake-shoe. - Google Patents

Description

y Thisintentionrelatesftofbralielshoesi fm. I .brake-shoe' adapted for use cn Wheelsoffmja.-f

p L .fteri'ally"differentfdiaineters-fsay,I foreXam-f 1e,`driverwheels ranging iny diameter 'from'.

' The jobe t? f the invention is toprovidea' orY-f'eight inchieste s'eventy-'iwoinchesf thereby providing for using' alsing'lepatt'ernof'fshoe onthe different'diameters Aof wheels instead ol' ajdifferentpattern 0n eachfdifle.-

'i e yent diamet'er'of Wheel; Thepractical'advanftage's of this feature are, first, thatit Will ne' zo cessitate carrying v a very srnall stock of brakeshoes comparativel and, second, yconvenlence in selectlng as oe forfuse on'anypartic-' ular Wheelv and velimination of all possibility 11n vif is alplan view of theface or'frictionesurface of a shoe of'my invention', and Fig. `3 is ka sec# i, tionalriewthe'reofon theline SQf Fig.v 2.1 f" i I. l n. ofrn inventionwillbeto drive'rlbra e shoes fort e `reason' thatd'river-Wheels are rnade ,of f i Widelyrvarying diarne't'er's, i whereas ordinary car-Wheels are;y commonly madezfof substarr-l --jf tially` the saine diaineter-. gf For v'}; u1 p'oses lof "illustration, therefore, I have'shown my 1in-Q `Q45kr vention asvernbodi'ed'in adriverbrakeshoef All of-theforegoingiparts maybe of anydef, s'ired j or approved-g1.construction VVVas re'gards y theiriusual features and'will b ereadily'undcr-j ""stoodfhywpersons `familiar' withfthe-art from.-`

' kof mistakes through the selection yof 'a shoe 0fthewrongpattern. Y l'To' this end a brake-'shoe of my invention consists vof the -various vfeatures', combinations 1 of features and details of construction 'here-y Sinafter described andclaimed.l Y l 'f In the accompanying dravsfings', `in 'Which a *brakeshoe lof iny'y inventiony is" full` killusvvtrated Figure 1 is a sideviewzof a bra e-shoe Vof m'in'vention, together With'a brakehead ch saidbrake-shoe is secured.y f Fig'. 2

practice-f` thel most common ap lication 'BOOTH;en -.MILWAUKEE;'Wisconsin l 'anfinspectioriiof vthe drawingswithout' af detailed'descriptionvthereof. i f p f-The'curve V.of the face or4 fricti'omsurface of y f fthe'brakefshoe isfap roxilna'tely halivsfaybei-` tweentheycurvesp ftheztreadsefthe -largestya andfsinalle'stavheels on which?=- the shoe' is de-v z'signedoruse,and formed en the face `vor fric-Y tion-surface of thevbrake-shoe aretra'nsvers'e 1 ribs or-projections The height of said pro.- jections 1 is such-that when the-shoes are rst *f i appliedthey Willwithinf the designed limits A o kuse vhold, thef-aceoitheshoeout 'of Contact "Petiiiied'eresia-iet);isos; i

withthetreadfofthe-Wheel, and theyare so vpositev toaithe` brake-head bearings 2 on t e theshoe `is designed for use `will just Contact with thefac'e or 'friction-'surface ofthe "shoe,` the smallest wheellati the centereofgthe shoe i .andthe'lar'gestatthe endsof said shoe. As i said ribs or projections Wear,v therefore, the f i `facev or friction-surface of the shoe v'villgradu-v Aally comeintolfull bearingwith` the treads of 4located thatthepowergexerted in appl ing 'y l `thelhrakes will-be transmitted in direct inesy i through them, beingpreferably directly() -A7 o ack .of theishoe.v v"Preierfaibly alsoA the' height ofsaid ribsr oriprojections is such that treads 1 .of the largest and*y smallest Wheels on ywhich the wheel, except, in the case ofwheels the -eurveof thetreads of which is thesa'meas'that of the face"orfriction-surfaceof'the brake- 5 f shoe, "in Which'case the face .orrictionlsur' face of the brakeshoe willfnotcome into contact vWith the f tread :of the yWheel *untill lsaid ribS 01" r projections areentirel Worn o'fffand will 'then come atonce into ful bearing there- 1. with: For the purposefof illustrating'the de- ;scribedirelation Ihavevin Fig. 1 ofthe draw- 1.

`ingsindicatedf'bjthe dotted lines :1.2,vy, `and ziithe'jcur'vesiof the treadsfof Wheels ofl the largest; l'nean', andsrnalles't diameters,frespecj v jtiily,y onfwhiohithe vbrake-'shoe is designedy 'ITheribszor projectim's.y 1 .are 'preferably j rnade-ofsoftycastiron andare narrow, sayfrom'one to tWo inches'wide.1` They Will thusf "j i' we ardown` uickl vs'c, a'st 0' bring thehrake#r "shoeinto ful hearing'with'thewheel at points inline with thebearings'of thebrakeshoe fon the'brake4head, wl1ile atthe vsamedtinie :affording 4s uilic'ie'nt. support' to said shoe vvat 'pointsfremo'tefjrom its o-int or points of. Linitial Contact With the 1w leel to practicallyv elirninate all shearing stresses in sai'dshoesin operation.- i jj 1 In brakeshoes embodying m invention the body ortion A is preferab y made of standard t 'okness throughout, the ribsor Frojections 1 forming extensions above the ace or friction -surfaoes thereof. In this manner-.the full life of the shoe is secured.

I claim as my invention- 1. A brake-shoe having two ribs or projections on its face or-friotion-surfaoe one be" ro tween the center and each end thereof. l

2. A brake-shoe having two-'ribs or rojeci tions on itsv face or friction-surface so ooated that the power exerted in applying the brakes will be exerted directly through them.

i 5 3. A brake-shoe having tWo ribs or projections on its face or friction-surface one loeinem cated substantially in line with each brakeheadbearing on the' back ofrthe shoe.

4. A brake-shoe the face or friction-surface of which'isa curve of mean radius, said shoe having two ibs orprojeotions on its face or friction-surface one lo line with eachbrake-head bearing on the back of the shoe. 4

In testimony that I claim the foregoing as my invention affix my signature, in resence of two subscribing witnesses, this 24t day of June, A. D. 1905.

WILLIAM G. MENZEL.

Witnesses:

I. W. MoPHERsoN, C. W. ANDERSON.

cated substantially in

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