USRE12930E - Ckeab fob - Google Patents

Description

A. HARROLD. GEAR FOB TRACTION ENGINES. APPLICATION FILED OUT 2, 190B.

Reissued Mar. 23; 1909.

3 SHEETS-SHEET 1.

A. HARROLD GEAR FOB TRACTION ENGINES.

APPLICATION FILED OUT. 2, 190B.

Reissued Mar. 23, 1909.

avwontou I A. HARROLD.

GBAB FOE TRACTION ENGINES.

Anuonxo'x rnnnoozr. 2. 190a.

Reisued Mar. 23,1909. 12,930.

3 SHEETS-SHEET 3.

4 Quiuentoz 3; v I I lTo all whomit may concern:

ien of the Unite Myinvention-relates to improvements in .gears for traction-engines, whereby different sTArEsP T N f Q F- E- 'AMos naaaonn, or DELAWAiiEjOH'IO."

' enna or. 'rnhc'rxonfnizemss,

Specification of Reil eued-Letterc Patent.

Reisgued an 23, 1909.

Original 110. amen dated April 16, 1907, SeriaiNo. 197 ,164. Application or reissue filed ember 2, 190a.

- atrial No. 455,935.

at I, Amos HARnoLD, a citid State's, residing at Delaware, in'the county of- Dela Ohio, have invented certai Improvements gines, of which thefollowing is a specifica- Be it known th 11 new and useful speeds are provided and frictionalcontact between the fpower shaft and ti communicating motion tothe axle together withcertain deta' struction, all of which will be fully ex lained by reference to the accornpanying rawings, in whichy I 4 Figure 1 is a side elevation. lFig. .2 is a transverse seetion through line 3; 3, Fig. 1. Fig. 3 is A top view showing the relation of the various gears and their arrangement. Fig. i is.a friction-gear and cooperating parts on the 3, Fig. 1 Fig. ,5 is a'vertical'section on the line 5+5, Fig. 4.- Fig. 6 is a horizon ta]. section. through. one eccentric and its parts in all the manner, reference bein ner.

I is loose] to the Similar nunteralsof reference indicate like figures of the drawings. 1 represents which may be constructed in any welhkiiown tachin'g and locating t e' various pa'rts pertaining tot present invention. J.

re rose 7 the traction-axle which is journa edft'o' the frame in thaordina-r man- To the traction-axle 2 are attaciied the traction or propell' wheels '3, and to the wheels -3 are secu i sy attached. the gear wheels 4', which gear-wheels may; be'attachedto the, s okes of the traction-wheels 3, as shown'in g-.' he m y h rwise attached, inasmuch as the only object desired is to. provide suitable attachment he-" tween ,the traction-wheels and the ear- .wheels. -To ;-the'frame'.-;;1.' is -journale the a com ,nsat'; rshaftfim n which shaft pe y:n dii n t?dtheintern i ar-wheelfi, sad of'whiehia located e bevel-gear T,'which be K gear is-fixed upon said shaft 5 andmea'hes w th the, gear-pinion 8, which gear-pinion isfpivotally-carried' b the said mternaldgearflfl and meshes. with t e. loosely I mounte bev'e ear-9, saidbevel-gear 9Ibe= ing-fixed' to the transverse section through the a portion of the engine-frame ware and State of (in Gears T for Traction-Eng had to prope zly. at- Th leave 10, and upon which are supported and carried by the slowest speed islio 'pin1o1r27 lS brou sleeve 1.0 is fixed the pinion 11, which pinihn meshes with the gear-wlwel 4. The parts 'ust above described constitute what might i e termed an ordinary compensatingfgear 'and form no particular part of the present invention'. It: will be understoo d that upontlie o pi) site end of the' shaft 5 is securely fixe [the pinion-l2, which meshes with one of the gear 1 wheels 4.

To the frame 1 is journaled the shaft 13 and upon; which shaft mounted ting gear-wheels '14, 15,.

ng with the seconflarys aft 13. shaft'l3is mounted the pinion 18, wii ion meshes with the internal- The counter shaft 19 is ourna centric bearings 20, which ec lull pincer-wheel '6. fed in the err-- centric hearings suitable casings any convenient l1 which casings are fixed in equivalent.

Upon the shaft 19- are slidably mounted the sleeves 22 and 23 with the differentiatingpinions' 24,", 1'25,

and '27, said pinions hein ranged substantially as ilustrated in the drawings and all for the purposefhereinafter described. The pinions 24 and 2-5 are moved in unison and likewise the inions 2 6 and '27. e ' pfinions 24, 25, 26, ant 2-7 are so located and arranged with reference to the gearwheels 14-, 15, 16, and 17 thht they can be thrown injand out of mesh at the will ofthe operator, by' which arran tinct and inde It will be 'unde is brought in pendent speeds are provided. rstood that when the pinion 24. mesh with the gear-wheel l4 btained' and when the ght. inqnesh with the gearwheel 17- the highest sueedis. Qitjiltfllllflii The other pinions and ear-whecis irovids or produce various spear s betweenthe'highest and lowest. For convenience the uh ions, together withtheir sleeves located upon the shaftlQ, can'be s0 arrangedthat thev can :"all be thrown outof mesh, which the' fplosi tion illustrated in Upon the shaft friction-wheels 28. 'Said'friction-wheels are of the usual construction and-arc located be: tween the inner surfaces ofthe wheelsiz and- .the outer surfaces of the hubs 30, which ,are preferably formed "integral with t '1 Fig. 3.

19 are se .,:ure l v fixed the 1 7eand weli-known manner to theframe 'l or its ,and to said'slee'ves are securely attached or formed integral there- 26, located and argemen-t. four dis.-

A no

wheels29, said hubs and wheels being securely fixed to the power or engine shaft 31. It will be understood that by my peculiar arrangement I am enabled to rotate the shaft 19 in opposite direction by shifting the friction-whe'els 28 from contact with the inner surfaces of, the wheels 29 to the'outer' necessary.

The friction-wheels 28 may be detached or disconnected or brought out of contact withthe inner surfaces of the wheels 29 and the peripheries of the hubs 30, at which time no 0 rative connection is maintained between t 1e e inc-shaft 31 and the various gears or propel ing mechanism, this being very desirable, especially in glasolene traction-engines,

act t owing to the at gasolene engines cannot well be started under a load or at the time they are to perform the work designed to be accomplished. I

It will be understood that when the friction-wheeh are in contact with the inner surfaces of the wheels 29 the'engine proper will be propelled in one direction'and when saidfriction-wheels are brought into contact with the hub 30 the engine will be propelled in the'oppositedirection,by which arrange-- ment thee ine proper can be propelled forwardpr b'a ward, and, as designed in the present instance, the backward movement is rought about by contact with. the hubs 30; which brings about a slow movement owing to the fact that the hubs30 are of less diameter than the diameter of the wheels 29.

For the purpose of maintaining proper mesh as between-the gear-wheels 14, 15, 16, and 17, and the pinions 24, 25, 26, and 27 the mesh is maintained in a horizontal line drawn.

' through the shafts 13 and 19, or substantially so, and substantiall a vertical movement impartedto the sha t 19, by which arrangement the pinions and gear -wheels above mentioned are not thrown out of mesh at any time during the 'movement of the shaft 19 by means of the eccentric bearin s 20.

he operation of my invention in its preferred form of construction, when emplo ed in connection with'a gasolene engine or ot er motor running always in the same direction and usually at the same rateof s eed, is substantially as follows Power sha f m tor 0r prime-mover constantly rotated in one direction carries with it the duplicate flz 'pirlieels 29,- 29 securely keyed upon opp'omeans of suitable arms 32, fixedmovement of said t 31 of the site ends thereof. As shown by the drawings, the inner surfaces29" and central hubs 30 of these wheels constitute internal and external friction-surfaces concentrically arranged and preferably in, the form of annular inwardly irojecting flanges. Between these flanges of each wheel 29 are located corres ending friction- wheels 28, 28 of any suita le material or com osition, and of a diam- 'eter somewhatless t an the radial distance between said flanges or friction-surfaces with which they are adapted to alternately en age. Rigidly' connecting the said frictionwheels 28, .28. is the c( unter-shaft l9 eccentrically mounted in opposite sides of. the niaiii supporting-frame 1. Obviously in this, or su stantially this relation of parts, a slight. oscillatory movementv in one direction of the pivoted arms 32, by agency of any suitable operatin lever, such as 32 acting through the doll le eccentric bearings 20,21] deresses the counter-shaft 19 whereupon both riction- wheels 28, 28 are brought into contact with, and derive power from, the oppositely arranged friction-surfaces 29", 29, and are revolved at a 'com aratively rapid rate of speed. On the ot ier hand a reverse pivoted arms 32 acting through the. eccentrics 20', 20 elevates shaft 19 bringing the wheels 28, 28 into contact with the hubs or externalfriction-surfaces 30, .30 revolving at a comparatively low rate of speed; and, whether the rate of. speed be fast or slow, forward or backward, power is thus transmitted from shaft 31 of. the primemover to the counter-shaft 19 at will of the operator under control of a single lever, and thence throu h suitable gearing to the traction or roun wheels 3, 3 of the vehicle.

In a dition to .these advanta es it will be understood that the forward rive of the vehicle is obtained by bringing the counter-' shaft friction- wheels 28, 28 simultaneously into contact with their respective internalfriction surfaces 29",-29 of both fly or ,fric-' tion wheels 29, 29 on the main power shaft 31. This gives an increased area of frictional contact, there being less pressure required'to insure the transmission of power, the conseuent strains on all bearings arising from t is pressure hein r corres ondingly reduced and more uniforr'nfy distributed. Moreover, it is well known that the forward drive in vehi'cles of this class-particularly tractionuse. A still further advant of the double i construction illustrated resi es in thefact j that vibrations of the engine or prime mover are reduced to amimmum, the cons or friction nection of the gearing with thefl w eel of wheels being such as mama:

m, mesh? Ha a 1 1 driven variable speed-gears,

reco en e lleav explosions, and assist materially in equaizing the strains and vibrations incident to motors of the class described-g As .paforesaid, thecounter-jshaft 19is operativel f5 connected with the traction, or. groun gwheels 3, 3 by suitable' earing, that illustrated by the present d rawings involving both variable-speed and com ensatin gears, wherehy'the ower-derived ii'om sha it 19 is transmitted tnrough shift'able pinions 24, 25,-- a 26 or 27] splined thereto and rotatable therewith, to one or the other of the driven-gears 14, 15, 16 or 17 secured to the intermediate shaft 13. From the' latter or; ewndary I shaft '13, driven thus in either direction, the power is next transmitted throu hits pinion '18 to the internal gear 6 loose y mounted with relation to the compensating-gearshaft 5, thence by pinions-S, 8 to gears. 7,' 9 fixed .20 respectively nsaid shaft 5 and sleeve 10.. Thusunde'r'or inalwfeonditions'the aforesaidelements 5, 6,17 8, -8, 9 andlfl'rotate inoluster with shaft 5 as an and 12, and through them the mam gears 4, 245 4 'a'flixed'tojthe .groimd wheels 3,3 the other hand, :a turn offthmvehicie one we wheel 3; reupon, as in compensatinggei'ierally,;there is a relative rotary $0 movement-ofgeai-s' land-9, thein-temiediate p'inion's a; 8 at :su'chtimes revolv" axially. more'-'or.lessocoording.to the radnimf -""curves;describedib the ground-wheels. Thus the operatienof thei nvention in its" preferred form of construction contain lates': 'the'aforesaid duplicate arrl-ngemqrt tional driving anddriven- 'power.-.transmitand reversing -'-gears, {,Mivdv I isslvm fi I Z between the source of powenahdits o,:- ints ofiutilizat' dw i eate arrangement the fridt" lsfof, gleat', importanceicotrtribu in no "Q vhhat- I c aim and desire to by Letters -146 small-degree to the durabilityi'an general -ll In a gear for combination of a frame, anaxie joumaled in the frame, driven wheels seemed to said axle, a gear fixed to each'of saidwheels, 0. compensating shaft, an internal gear loosely mounted thereon, a pinion fixed to said 1d vee abevele comiensating shaft and m with one gears on the drivenw eels, two are, mounted adjacent each other, gear carriedby the internal gear .of said beveled gears located on the one of the gears shaftwhich meshes with the internal gear, a third shaft, sleeves shdably'mounted on.

axis, 'toriv'e pinions 11 latter gears mentioned "sating -gear'shaft, a 'pinion mountedori the";

fixed to one of the driven .n'h'e'els; an internal p V ,gear mounted on the compensating-gear- -And"vhil '=such :pinion meshing with the the sleeve, abeveled-gear said pinion meshin -0n the dr ven whee interposed bet/WEEK said two beveled gears,

a sleeve, one offsaidbeveled gears fixed.v upon said compensating shaft and the other sleeve, which meshes with on the driven wheels, a secondary shaft journaled' in. the -frame, different-sized gears fixed on the 'said: secondary-shaft,- a pinion on the, secondarya pinion on the sleeve the third shaft, pinions offdifierent-diameteis onthe sleeves, said pinionsadapted to mesh \'-.ith the different-sized gears on the] i secondarv-shaft, eccentrlc bearings-for so said thethird shaft, friction-Wheels fixed on'the third shaft, an engiueeshaft, wheels seen-red thereto havi rims and hubs, the f'rietionwheels being 'ooated intermediate the hubs and inner surface of therims of the 'wheels nate contact. therewith. e

-2; In a 'gear for traction-engines, the eomhinationof a frame, am axle jou'rnaled inthe fram'e, 'driv'en wheels secured to said axis, a' gear fixed to each. driven wheel, eccentric ibearings,- a*shaft mountedii'i said eceentrie hearings'different-sized gears and friction-wheels on the latter shaft, an'en i'ne shaft, wheels mountedon the engine-s aft, the friction -'.wheels on; the eooentricallg;

hubs me-ems of the ii heels en the engine-' shaft, a'secondary-shaft, different-sized gears" mountedfon the" use nagmedi shaft, said 1'00 adapted toinesh with thefirstdifferent-sized gflars, a compen' latter :shaft and meshing I 10 i l s aft, apinio'n on the secondary-shaft, said 1 latter pinion meshing with air, a sleeve on the corn mating-gears aft, a pinion mounted ont iizsleeve, said 111! ear fixed tonne o'f thedriv'en Wheels, a beve ed ear mounted eel revolving:

with the oompensatin -gear shaft, mid 1* beveled'pihion carried hy the internalgear between the beveled earslonthe'sleeve y Y i e. the compensatingsha t. thus described, my *,'invention,

In a gear for. traction-engines," the foombination of an axle; driven wheels: 1 mounted on said axle gears on the drivel: Y

'w' heels, a'compensatin'g-gear shaft,'--.a"pinion I mounted on the comlpensating-gears'ha said pinion meshing wit one of tl1 'e' 'gea1fs' onthe'. driven wheels, a sleeve, a. pinion-on the sleeve,

with one} of-"the are" V s, a secondary-aha; a". pinion on ,the last'named shaft, a seri'egpf diflerentesiz'ed'gear'son the secondary-shaft, gearinginterposed between the pinion .on the secondary shaft' and the pinions on the on the engine-shaft andsda'ptedfor alter-- the internal 1 sleeve and compensating-gear shaft to revolve the latter and the sleeve, a shaft, a series of ditl'erent sized pinions 0n the latter shaft adapted to mesh with the different-sized gears on the secondary-shaft, friction-heels on the shaft carryinx. the different sized pinions, an engine shaft, wheels with rims .and hubs mounted on the engine-shaft, and means for engaging the friction-wheels with the hubs or rims of the wheels on the engine-sh aft. t

4.; In a traction engine, the combination w ith a frame and driving ground-\z'heels sup porting the same, of 21, p0 er shaft for a prime mover mounted on said frameha'ving a friction-wheel with concentric internal and external annular friction-surfaces, a counter shaft provided with a friction-wheel located bet-ween said friction surfaces and connected with the driving ground-Wheels by suitable gearing, and means for relatively moving said shafts to bring the counter-shaft frictionnheel into contact with either the internal or external friction surface of the other friction -nheel, substantially as described.

5. in a traction-engine, the combination with a frame and driving ground-wheels sup porting the same, of a power shaft for a prime.

mover mounted on said frame having a friction wheel with concentricinternal and -external annular ffiction-surfaces, a counterslutft provided with a friction vhcel located between said surfaces and connected with the driving ground-wheels by suitable gearing, and means for moving said countershaft toward and from the other shaft to bring the counter-shaft friction-wheel into contact with either the internal or extcrnal friction surface of the other l'rictionw.heel, substantially as described.

6. In a traction-engine, the combination a ith a frame and driving grouml-ehocls supporting the same, of a pony er shaft for a prime mover mounted on said frame having a friction-wheel uith concentric internal and cx tcrnal' annular friction-surfaces, a countershaft eecentrically mounted on said frame provided with afriction-wheel located between said surfaces and connected with the driving ground-wheels by suitable gearinglfict w. ith a frame and driving groundav heels sup- 1 porting the same, of a power shaft for aprime mover mounted on said frame and provided with a fly-\\ heel having concentric intei'n al and external annular friction-surfaces, "a,

co outer-shaft provided with a friction-wheel located betvceen said friction-surfaces and connected \aith the driving ground nheels by suitabie gearing, and means for relativel moving saidshafts to bring thecounter-sha t frictionw.heel into contact ,with either the. internal or external ,friction-surface of said fly-wheel, substantially as described.

'S.ln a traction-engine, the combination with a frame and driving ground-wheels supporting the same, of a power shaft for a prime mover mounted on said frame and havingtwo friction wheels, eachprovided with concentric in'ternal and external annular friction-surfaces on its inner face, a countershaft extending between said friction-wheels and having at each end a friction-Wheel located between the friction-surfaces of the corresponding friction-wheel on the powershaft, said counters haft being connected with the driving ground-wheels by suitable gearing, and meau's for relatively moving said shafts to bring the counter-shaft friction-\x'heels intocontact with either the internalor external frictionsurfaces of the other friction-wheels; substantially as described.

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

- 7 g v I AMOS HARROLD. W i t-nesses EUGENE'S. GWEN, I F. A. OWEN.

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