US829770A - Emergency-brake for cars. - Google Patents

Description

PATBNTED AUG. 28, 190e.

W. E. PISTER.

EMERGENCY BRAKE POR C'ARS.

APPLIATION FILED FEB. 12. 1906.

PATBN'IBD AUG. z8, 1906.

. F. PISTBR.

BNCY BRAKE FOR CARS.

APPLICATION FILED F3112. Inca.

EMERG 2 SHEETS-SHEET 2 Wicsaiil'NiflED STATES PATENT OFFICE.

EMERGENCY-BRAKE FOR CARS.

Specification of Let-ters Patent.

Patented Aug. 28, .1908.

Application flied February I2. 1906. Serial No. 300.679.

Bo it known that i. irri-:n l". FISTER, a citizen oi ilnihil Si vri-S, rvs-illing in Henlburg, ihrlos nonni); irnnsjflvimiu; have nvonted rorinin lmnrormnvnte in Elin-,money- Brnkos for 'iE-1ro, of which the following is a Spzi'iiiintioir My inrmil ion relatos to that class of einorgnnoylimlo-s which nrt, upon the roadway insiflo of filo ironic-mils upon which the Car oi',

olhir whirlo is adopter! to more. the objiot oiV my invi'niion lia-ing: to proviilr n quloknoting brok/ of this rims und tio so constructthe hrnkc that ity van be pnt mbo notion from eiilwr or both of the plotforr. s of the cur and will he somi-ontonmtic in itsnotion, the braking rlevires :it the rear und of the oar boing rendered fully operativ( 'by' the weight :1nd momentum of the ver. Ail of the. hmking deviens hang free when noi, in use, but are adjusted to operativo position by n partial turn of zi wiwi-l or slmit within convenient roach ol' the morornmn or oonilurtor.

in thrsicrompmiying drawings, Figure 1 is side vlovnlion, pnrllyi n onction :mil in iii Lied lines, ol'soliriont of n trolloy-onr tio illustri-n theroon in full lines hmking: meclmnis'm constructori in accordance with mj' invention. FigA 2 is un ond vivwof the sinne, partly in soction; uml Fig. 3 is an enlar'fod .View illustrating one of tliiA foaturcs oftlie braking nir- 1ianisvn.

(ln tho undrr side of the cnr, at. @sich side oi' thv Faune, is :i longitudinal hmm l, whirh may forni part of the ordinary structure ol' the uw or may he u. special hvnln added to sin-,h sminuire, ns preferred. xionding longltinlimilly from one end of tho cnr to tuin other, pliinllelith ono of these hwnns l, is u slmlt 2, whiish is mounted in snitnlllv lnnrings 3 nt the iipposilc exnlsof the cnr und is geared at nach end of Vthe wir by moons of spur--whvols 4 und 5 to n shor!` shall mounted in IQnitnhle hearings upon [im corresponding platform of rho wir, snidh'lmft lnivinrr mounted lhirion, o ne li iw fron (lo turn, mi oporntfing-li-vir 6, )reforsihly proviiiiil with n. lookinirg-hollY 7, whereby ilI muy iwminimi to ongugc with Llw spurwhovl 5 when the lmniil(` of the lover is grnspvrl. in' the nml-olmnn.-tlnm providing for n pmlinl roh-:lion of Lho spnr-whool 5 by moons of lilo loror i whim sin-,ir rotinliiox luconns mwrnsnry" n noLoln-il vomi) m' Hvgmonii l" sowing lo rvioin rho lm'vr in position ofi-or mljnslinionlf.

' sniii fleure, tho lower portion of each brak "57,

Projecting from lzhe face of the spur-Wheel 5 is a stirrnp 9, which rovides for direct o eration oi' Seid spur-w lecl by the foot to t, eV ,i oxlvnt of a partial turn, this beingthe pref- 69 emble method of imparting the initial mot` tion to the wheel, the lever 6 being used as an emergency device for continuing the movement of the. whoel if thu initial movement iml iarted thereto hy the -stirrnp should prove tpf6`5 lie insufiiciont for the purpose of app ying the brakes. VVhero extended movement is erxnitt-ed, the lever 6 nmy, if desired, be app ied (liront-ly to the shaft 2. The said shafls-2-hai 4 near auch emi u crank 10, wine? is connected.' 7o by n link ll to n fmnk l2 on al ooksha-ft13, the latter vxleniiing tmnsyersely across the A car and being reo lo turn in suitable dependinv bearings on the Car-ilmc.` igidly secured to the rook-shaft i3 isa 75 paix' of Swingin ,brake-.blocks 14 disposed )ust inside of l, le' track-rails. oxmnlly-L- that is to say, v'ufhen the car is running ,fr-- the parte are in the position shown by full lines in Figs. 1 and 2, the brake-blocks l4foc- 8o cupying the position there shown und free' from contactF either with the cnr-frams'f or road-heil. .By impnrtinggn quick tillrnf to thv simil; 2, however, the cranks -lOnd-plZg' will bosliifbccl so as to move the crunk-bloeik'ss 14 roni the positions shown by full liife'si'n i biol-.k lheim* forced lirmly into contact' tho rond -iod Thai. face of each brake- 9o blovk ,I4 which contacts with the mnd-bed' muy bi. pointed or may possess such zgdegreo of ecoontricitiy in ros vect to the axis of rotntion ol the block, as shown :it- 15,for'inst.nce, Limi when the blocks at therearothc curare 95 forced into connu-L with tlv` road-bed the en- ;:ngiinent of tho lutter with @he blocks 'will zond to continue the movement of the Same until such inmjomontisarrcsteil hynontact of, l

.n 'portion 16 ol' mii-h block with u correspond-n ugo ing lwfrni l, hy whirh timeA the other portion n i i l5 ol'I thv hlork will lw hilly dcpressodundyf' will, il' ilvsiroiTogvrl n lifting oliect upolntheg' brains l, thi-rohr hringing ihoweighipf our and iis loiul upon the brillio n roar oi the cur and nfloctingftheiQ pin-go of any further forward inogeniigii QQ' i rar, thehrakvfhlocks M, the realoffltg ab i ing Lliorvfore sonllimutomatiu inlil'ei The brake-blocks nt, the forward om', although set to swing: riavere', those at the roar cnil, will uid in th= m efi'eet.since they will bear upon the rond-bed with o. force proportionate to the power exerted u on the spurwhccl 5 and to the pnll exerte( by the rear brake-shaft 13 upon the shaft 2.

1n order to insurethe easy movement of the brake-blocks through the medium of the double-crank mechanism employed for opervatingthc same, each end of the link 11 may birqvided with antifriction-rollers 17 above i a belo'w the crank, shown in Fig. 3, and both of the cranks 10 and 12 may be clungatcd, so as to provide for the movements of the links 1l duc to the swing of' said cranks.

l Glenn 1. An einer' ency car-brake consisting of a swinging bre e-block mounted below the body ofthe car and having two eccentric portions, of which one is capable, when the' dcvice is in action, of contacting with the road hed and the other with the beam on the carrame.

y 2. An emer ency car-brake consisting of a yswinging bra e-biock mounted below'the -body of the car, and having, below, an eccentric face for contact with the road-bed and above, an eccentric locking-face for Contact. with a beam on the csr-frame.

3. The combination of Swingin f brakeblocks at the front and rear ends ci the ear, with means for swinging those at one end of the cer into operative position by movement of reverse direction from that imparted to those at the opposite end ofthe car the parts being so arranged that the ap lication of the brake-blocks at one end of tllie car tends to apply those at the other end thereof.

4. 'The combination of Swingin brakeblooks at the front and rear ends o the car, with means for swinging the same into contact with the roadway, said blocks being constructed each with two eccentric portions so disposed that contact of one portion with the roadway will cause the other portion to engage the car and will tend to continue the movement' of the blocks.

5. The combination of swinging brakeblocks, a transverse shaft supporting said blocks Bo as to permit of their being turned into engagement with thc man ay :n.l with 5o the cur, a longitudinal shaft having operative connection with said transverse shaft, and means for im mrting a partial turn to said longitudinal s nilt.

1 Y. G. ihe combination of swmging brake- 55 blocks, c crank-shaftcarrying the same, e. longitudinal shaft also having a crank, .and a. link .connectin f sind crank with the crank of the brake-bloc s.

T. 'lhe combination of swinging brake- 6o blocks, a c ran k-shaft cerryinrf the same, a lon git udinal shaft having a cran ,and alink connei-ting said crunk with the crank of the broke-blocks, both cranks being elongated.

8. The combinationof swinging brake-.65

blocks, a crank-shaft carrying the same, a. lon gitudinal shaft having a crank, and s. link connecting said crank with the crank-shaft of the brakeblocks, said link having rollers for` engaging the cranks. A 7o 9. The combination of a longitudinal brakeoperziting shaft on the under side'of the car, and gearing for operating the same, one of the wheels of said gearing having a project ing stirrup for bein acte partial turn by the oot.

10. T he combination of a longitudinal brakeopcrating shaft on the under side of the ear, and glearing for o creating the same, one of the w projecting stirrup for bein acted upon by the foot and a lever for han action. Y

11. The combination of' .a longitudinal brake-operating shaft on the under side of the car, and rcaring for o eratingthe same,4 85

one of the w reels of sai gearing having n. projecting stirrup for being acted upon by the foot, and a lever for hand action, said lever being loosely mounted on the shaft of the gear-wheel and bein whereby it can be loc ed to said wheel.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. l

WALTER F.FISTER.

Witnesses:

WILLIAM H. GIBBoNs, Hmm' J. Haskins.

upon and given a 75 eels of sai gearing having a 8o provided with a bolt,9o

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