US1260780A - Reverse-gear. - Google Patents

Description

1,260,780. Patented Mar. 26, 1918.

. 3 SHEETS SHEET I.

WI TN ESSES N VEN TOR.

- 41/5/44 fli/W BYFRED FLATS/111w. K V I a? [QM gJA 1k A T TOR NE YS.

F. F. LATSHAW.

REVERSE GEAR.

APPLHZQATION HLED MAR. m. 19H.

1,260,780. Patented Mar. 26,1918.

3 SHEETS-SHEET 2.

INV EN TOR. f/FEO 5' (1.4 75/01 144 A TTURNE YS.

E F LATSHAW.

REVERSE GEM.

Awuuuw mEu MAR. :0. m1

Patented Mm: 26, 1918 LQGOJBO.

3 SHEEF3--SHET 3- 31V 5 151K TOR. FRED E L A Iii/7641M A TYY "R N15 VS.

FRED F. LATSI-IAW, or ALLEeAN, MICHIGAN.

. REVERSE'GEAR.

M Specification. '01 Letters Patent.

Application filed Heron 10, 1917. serial flo. 154,022.

To all whom it may concern: j Be it known that I, Feel) F. LA' rsnAw, a citizen of the United; States, residing at Allegan, county ofAllegen, State of Michigun, have invented certain new and useful Improvements in Reverse-Gears, of which a specification. This invention relates to' reverse gears. The c .je'cts of the invention are: First, to providemea'ns whereby the re the following is verse gear may be actuated either manually -t|on and or by power.

Second, to' proride a combined manual and power-gear operating mechanism in W ichthe means for-controlling the power opcrntingmechanism is located upon the reverse lever. 4 i

Third; to provide a device of the kind described which is positive in action, requires but very little steam 'for the operation of the same, andgno steam when notin action. Y J

Fourth, to provide a reverse lever having a very short throw in cab. 7

Fifth, to provide at reverse gear opereting mechanism in which combined manual and steam power may be employed, the amount of manual power necessary being very small.

Further objects, and objects relating to structural details, will definitely appear from the detailed deseription to follow.

I accomplish the objects of my invention by the devices and meens descrihed in the Following specification. The invention is clearly defined and pointed out in the claims. .1 L 7' V A structure which is a prcferrei'l vmbodiment of my invention is clearly illustrated in the accompanying drawing, forming a. part of this specification, in which:

Figure I is n side elevation of a portion of a locomotive equipped with my improved reverse gear, operating mechanism, portions of the locomotive and 'cab being broken away to more clearly disclose my improvements. i

Fig. 11 is an enlarged detail view showing the cylinder my reverse gear mechanism in verticalsection nnd'n portion of the connecl'ions getwecn the piston thereof and the link flitting nieclmnism iii elevation.

Fig. 'lll is-n'n enlargeddetail view showing portions of the reverse lever in cleveshowing the valve mechanism in srclion on a line corresponding to the line ;5---3 of Fig. IY.

Patented Mar. 26, 1918.

Fig. IV-is an enlarged detail section on I li e-4 of Fig. III.

Fig. V is an enlarged detail section of the reverse lever on a line corresponding to line 5--5 of Fig. I.

oil a line corresponding to line 6-6' of Fiigrv. J

ig. VII is a side'elevation portionof my reverse lever.

Fig. VIII is an enlarged detail section taken on line 8-8 of Fig. III.

Fig. IX-is an enlarged vertical my pressure reducing valve taken on e line corresponding to line 9.9 of Fi X.

Fig. X is en eular ed detail section taken on a. line correspon ing to 1ine10-10 of Fig. IX.

In the drawing, tersref er to simi several views and the sectional views'ere taken looking in the direction-of the little arrows at the ends of the section lines.

of the top similar reference charac- My invention is adapted'to be used in con-y Fig. V1 is an enlarged detail section taken section of let parts throughout the 1, the reverse link der to reverse the direction of movement of V the locomotive or engine. A link 4 connects the upper ends of the lever 2 with the upper end of the lever 5 pivoted -to the frame at 6. The reach rod 7 is pivotally connected to the bottom end of tlie lever the reverse lever Y. The reverse;

5 at one end and its opposite end is bifurcated and pivoted ,0 .10

the frame at 10 and is.-

sure upon the handlo Xhljaeent the upper ends of the roverso lever 8 is an offset hraeltet l9 hotweun whirh and the upper ends of the reverse lover is pivotally mounted a detont control handle 20. 'lho iivot 21 for this handle is provided witi an extension 22 forming a setond handle in; means of which the rovorse lever ma he operated after the detont It is disengaged by means of the handle 20.

'lho handle :20 in provided with oppositely extm'iding lohea ill and 24 whirh are adapted to engage the stops 23 and 3t; res 'ieetivel vn to limit tho movement of the handle in either direction. Pins .27 and 28 are seem-ed in the lobes 23 and 24, respectively, and 'projoct through curved Sluts 29 and 30, respect-ivoly at the top of the reverse lever 8. The pins 27 and 28 re made long enough so that they engage the walls of the slots 31 and 32 in the bifurcations tirely, of the top portion of the detcnt 11.

It; will he (hair from the. structures just described, that the detent 11 will be lifted when the handle :30 is moved to either its forward or rearward position, thereby releasing tho reverse lover. When it is desired to manually oporato the reverse gear, it is merely necessary to tilt the handle forwardly lnlulnvardly and then exert sntlioient pros- 22 to -move the reverse lover 8 in tho desired dirertion. desired adjustinrnt-has been -Illtl(l!, the handle. 20 is released and the rovm'sv lever 8 i locked in its adjusted position.

he force necessary to operate eertain types oi reverse gear is considerable, and in order to lessen the. amount of exertion necessary on the part of the engineer to perform tlus operation, I provide tho following means; The lobe :23 of the handle 20 is prtr vided with an extension 35 to which one end of the pitinan 36 is-pivotally ronnectud as shown at. 37. The opposite end of the pit man 36 is pivotally connected to the upper end of the sliding inkils a5 indivated at 3!). the top of the sliding link 38 and the edges thereof. as well as the odges of tho detont 11. and are secured to the re verse lever B. These elips art as uides for the sliding link 38 and tho l'tvtl'st' lever.

lover 4L is pivotally supported oiuthe frame work of the lorolnolivnns ahowu al lil and has one end pivoted to the bottom end of the sliding link The opposite 0nd of the lever 41 is pivoted to the upper end of the pis'ton roll H. as shown at. 45 in Fig. VIII of the drawing. The lowelr 0nd of the piston rod H i. providvd with a piston valve 46. whieh rontrols the flow of strain from the inlet port 47 to the outlet pol'la 4H and 49 rosln'rtively. and to th exhaust ports 50 and 5]. res a-rtii'ely. whirh are ronnwtod to a manifold 52 that discharges through tho exhaust pipe fi iahove the ash pit or any other desired loeation.

33 and 3%, respec- When the 238, as indumiwl at 4 3.

A pipe 54 supplies steam to the pilot valve and the pipvs 55 and 56, respertivrl w convey tho 'steam to lilo opposite end of the linder 57'. The cylinder 57 is provided with a. pigion .38 having a piston rod 5!) whirh is connected by the hltnr ated link so with the lever 5 between its supporting pivot and its lower ond. as at (51. A (JI'USS head oz in secured to the outer end of the piston in as by a pin (33 and reeiprorates upon thu slide- Way 64. The olltrr end of the slidrway (i4- extcnds between the bifurcation-s on of the lower end of the lover 5, as shown in Figs. I and IT.

\Vhen the handle 20 is tilted in a forward direition, l 'llt,,(.\'l(?llfil0ll 35 is carried downwardly and in means of the pitman 36 slidin o, links 38, lever 41 and piston rod 45. the piston valve lish eon'nnuniration heiween the inlet port 54 and the outlet pipe 55. The pipe 55 conduct-s steam to the-right hand end of in ry inder whirh artuates the piston 58 in a roarward dirertion. Tho air or Steam in the left hand end of the piston 57 is displaced through the pipe 55, the lover end of the pilot valve casing 46', exhaust port; 51 and pipe 53. i a i \Vhen the steam pushes: the vision 58' rear-- wardly the piston rod 55) and linli 60 pull the bottom end of the lever 55 rearnuirdly and through the link 4- and tho lei r 2 and tho reversing links are adjusted to one of their extreme positions. The handle 20 is then released, whereupon the sprin 16 pulling upon the lower end of tho handle of the detent 11 reStorvs thr handle 20 to itp-inormal position and the piston valve 46 to its new tral position, thereby rutting off the steam from the pipe 54 to the pipe 55. 'hen the handle 20 i tilted in the oppoaite dirortion, the piston valve 46 is t'orcrd downwardly. thereby allowing stoain to pass from the pipo 54 through the )ll)? 56 to the left hand end of the piston The steam displaces the nation :38 forwardly rod 5!) and link (it) moves tho lower end of the lever 5 forwardly and thereby adjuits the reversing link to it. other extreme position.

If it indesired to o ierate the reversing gear manually. it is simply necessary for tho euginoer to tilt'the handle 20 for enough to release the detent the quadrant but not far enough to move the piston valve in to a position would admit steam to either the pipe55 or the pipe 56. lly graspingthe handle 29, 1h! engineer ran then mamnillv operate the reverse gear.

Since it is not desirable to use the high pre suro strain of a boiler For operating the piston 58. I provide pressure reducing valve 66 whirh l interposc between the lmiler and the pilot valve.

and throughtho piston where it' to is lifted-upwardly to etab- I H from, the teeth of I I Referring to modifiQations and structure meansand a reverse lever,

- the device is first Figs. IX and X, it will be seen that my pressure reducing valve comprises inlet and outlet ports 67 and ,68, separated by a conical valve seat 69, and a conical valve 70. The inlet port 67 is semi-annular in. hori: zontal cross section, as shown in Fig. X and discharges throu h the wall of the valve seat 69. The out et ort 6 8'e on'imunicates with a vertical cylim er or cylindrical chamber 71 above the valveseatfi-l. A piston 72 reciprocate's in the chamber 71 and is urged downwardly by a spring 73, the tension of which may be ad ustedby a screw plug 74 in theuipper *end'of the chamber 71, A removable cap 7 5allows access to the plug e piston 72 is secured to-the valve by means of a rod 76. The lower end of the valve 70- is cylindrical and s'h'des'in a recess 77, which is closed by a removable cap 78.

In practice,-,the space between the two ends of the balanced piston valve lfiyt he pipe 54' and the portion of the chamber beneatlf the piston m are alwaysfilled with steam. The pressure of this steam-depends upon the "tension of the spring 7 3. When placed in operation, the Spring 73 holds the conical valve 70 "in its lowermost position so that steam passes through the end of the piston 57 and is displaced through thepipe 55, the lower end of the pilot valve casing :46, exhaust port 51 and pipe l n the accornpanyiup; drawing various" of the parts are shown mainly in conventional form as the structural details thereof form no pa of this invention. I have not at tempted to illustrate or describe certain" l dctails as I believe th disclosure made ivill enable those skilled in the art to which my invention relates to embody or adapt the same as may be (desired, v

Havin thus described my invention. What T claim new and desire to secure by Let- LcI'S l; ent, is; F

1. Id iais'tructure of-the class described, the combination with a reverselink'shifting i of aalevenp-ivoied intermediate itsend to the frame of a locomotive, a reach ,rod pivotally connected to the lower end of said lever and saidgreverse lever. 21 linlopivota-lly connecting the lIfPPEl end of saidlever to said reverse link shi ting means. a quadrantadjacent the lower end of said revcrseleven a,r. lct1ent mounted to reciprocate longitudinally oi said "reverse lever. the upper aend of said 'detent' being bifurcated and ,tie armsslottrd, a (latent releasing handle pivotaly mounted to-theup per 011ml of saidwlffiyfil fifii leYelitandi provided \vdh plus upon 9 point for engaging'theends of said slots, whereby said detent nfLY. he,li -fted bv motilpposite sideSof said pivot Q w ith men as rod pivotally connected intermediate the pivot and the lower end of said lover, a pilot \ialve controlling the admission of steam to t ingsteam to said pilot valve from the boiler of a locomotive at reduced pressure, and

means for controlling said pilot valve 00 prising a lever pivoted intermediateits on s, a link slidahly mountedupon said reverse lever, one end of said lever being pivotally connected to the piston rod of said pilot e ends of said cylinder, means for so plyvalve, the other end of said lever being pivotullyconnected to said link, and a pitn'ian connecting the opposite end of said sliding" link with an extension of said ing handle, substantially as described.

2. I11 a structure of the class described, the combination with-a reverse link shiftin' ,means and a reverse lover, of a lever pivoter intermediate its end to the frame of a loco- Emotive, a reach rod pivotally connected to the lower end of said lever and said reverse lever, a link pivotally connecting the u er jqndof said lever to said reverse link siii ing means, a quadrant adjacent the lower end of said reverse lever, adetent mounted to reciprocate longitudinally of said reverse I lever, the up er end. of said detent being bifurcated and the arms slotted leasing handle pivotally 'per en'd of said reverse with 'means whereby said detent "may be lifted by actuatin directions, acylinder provided witha iston and a piston rod pivotallv connecte to a pilot valve controlling tie admissionot steam to the ends of said cylinder, means for supplyingv steam 'the vl boiler "of a locomotive at reduced 'pressure, means for controlling said pilot valve comp risin a lever pivotedintermediate its ,ends, a liiilr slidablv mounted upon said reversing lever one end of said lever being pivotally connected to the piston-rod of said pilot-valvgthe other end of said lever he mg pivot-ally -connected to said link, and a pitinanconnecting the opposite end of said sliding linkn ith an extension of said detent.

releasing handlel substantially as described. 3. In a structure of the class described, the combination with a reverse'link shifting neaiis and areverse lever, of a lever pivoted" to the frame of a 1000- 111g means, a quadrant adjacent; the lower end of said reverse lever, a (latent mounted to reciprocate longitudina lly of I said re verse lever, the; upper end .of said detent, being bifurcated leasing handle i her by a detent releiis a detent re mounted to the up-j leverand provided thearms slotted, a detent' repivotaily mounted to the npj per end of said reverse lever and provided detent may be said handle in opposite to said pilot valve from lifted by artuatin saidluindle in opposite directions, a cylinter provided with a piston and a piston rod pivotally connected to said lover, a pilot valve con rolling the admission of steam to the ends of said cylinder, means for sup Jlying steam to said pilot valve from the boi er of a locomotive. und means for controlling said )ilot valve tctnuprising said detent releasing handle. suhstantit-tlly as described.

In a structure of the class described, the combination with a reverse. link shifting means and a' reverse lever of operating connections connecting the lower end of said reverse lever to said reverse link shifting means, a quadrant for said reverse lever, a detent coactin therewith mounted'to reciprocate longitudinally of said reverse lever, a detent releasing handle cpivotally mounted adjacent. the top of sai reverse lever and provided with means to lift said 'dete'nt when actuated in opposite directions,

power actuated means for operating sald slnftingtmeans comprising a cyhnder provided with a piston having operating connections with said reverse link shifting nlcans, and means to control. the admission of steam to either end of said cylinder comprisin a pilot valve. and means connected to suit detent releasing handle to shift said pilot valve in opposite directions when said detent handle is actuated in opposite direc- I tions, and means for supplying steam from a locomotive boiler to said )ilot vaLve at a reduced pressure, su'hstantial ly as described. In a structure. of the class described,

the combination with a reverse link shifting means and a reverse lever, of operating connections connecting the lower end oi said reverse lever to saidxreverse link shifting means. a tpnulrant for said reverse lover, a therewith mounted to re ciprocate longitudinally of said reverse lever, a detent releasing; handle pivotally mounted on said reverse lever and provided with In ans to lift said detentwhen actuated in opposite directions, power actuated, means for operating said shifting means comprising a cylinder provided with a pie-- ,tolrhaving operating connections with said reverse link shitting means, and means to control the tltllI-Ilhhltfll of steam to saidcylinder com n'isinga pilot valve, and means connected to saiddeteut' releasi 1g handle to shift. said pilot valve in opposite directions, and means for supplying steam from a, locomotive boiler to said pilot valve, substantially as described. I

6. In a structure of'the class described, the combination with a reverse link shifting mEttlh-l and a reverse lever, of means for connecting said reverse lever to said reverse link shifting means to operate the latter a detent mounted on said reverse lever, a etcnt lever secured to said'reveree'lever and provided with means for actuatin said detent in the same directi6n Whenthe cetent handle is shifted in oppositedirections, power actuated means connected to said connecting means to actuate said link shifting: means, and means for controlling said power actuating means connected to said detent actuating handle, substantially as described.

7. In a structure of the class described,

the combination iyith a reverse link shifting means (col ected to operate said .link shifting means,- a quadrant for said reverse lever. a detent for I said mounted upon said reverse lever, and means for controlling said )ower actuated means connected with said deteut, substantially as described. i

9. In'a structure of the class described, the combination with a link shifting mechanism anda reverse lever for actuating said link shifting mechanism. of a detent for said reverse lever mounted thereon, a handle pivotally mounted upon said reverse lever,

the said. reverse. lever and pivotcdhandle being provided with eoaetiug'stopsfor limitingthe movement of the handle in eithcr direetion relative to said reverse lever, and i lost motion connection between said handle and said 'detent at either side of the pivotal point of said handle, whereby when the handle is tilted in either direction the detent is lifted.

In witness whereof, I have hereunto-set mv hand and seal in the presence of two witnt 'see, v v

FRED F. LATSHAW., [14.8.]

Witnesses;

Lemma 6. unnnnrmm Manama-r Lg-Gmsdow;

means, and means for controlling reverse lever

Images