US1249534A - Valve-gear. - Google Patents

Description

W. L. SMITH.

VALVE GEAR. l Arnucmom mso ran. zo. wm. l

Patented Me. 11,1917.

W'. L. SMITH.

vALve om. v APPLICATRON FILED FE. 20. |914.

Patented De@ 11,1917.

2 SHEETS-SHEET 2.

` mmm-m intensa,

1 y y ATENE Fu wiirii'anfiiii. siurrn, or ruscuiaisia, ALABAMA. l

do hereby declare the follovviiigto bea full,

clear, and exactvdescription of the invention, such as `will enable others skilledin the art to which it appertains to make and use the same. i n i My inventionrelates to certain new and useful improvements in valve gear for loco- M motivesand` other lreversing engines and resides in the provision of simple ande'l'iicient gearing of the radial typethat is'capable of being readily attached tolocomotives and Will operatefto `preifent `irregularity of 'valve action andinsure q` iclrfclosing and opening ofthe valve. I' i i Y An important object fof my invention is to provide valve gear of *the .1 character described which, is extremely simple as to construction and dispenses with the expensive and troublesome linkgenerally employed in valve gear for locomotives and otherlreversj f `ing engines.`

te flassembled and cheap to install.`

4 A further important object oflmy invention is lto provide az valve gear of the char' 'acter described which may* be readilyatreversing engines Without necessitating any `material change inl thefconstruction of the engine tov Whichfit is .to bey attached,v said `attachment `being permitted readily and easily'. f "ii I l Another important objectof my invenftion isvto provide a novel form of frame for f supporting the'mainelements ofthe gearing, said frame being readilyattachable: to 'diri -ferent styles of locomotivesand light and strong,- alsol enabling the elicient operation of-v the "gearing and supporting" the gearing f in such a Ewa-y that little attention on repair is required to maintaiiifthe. gearing in operalliOIl;

further important object of my inven- :tion isi toprovide lgearing of the character described `which fis simple asto construction incapable of being readily assembled and dis` v V specificati@ of Letters rement.

'rammen nee. ii, rait.;

' fepatica-tionfiiedrebruaryac,1914;. seriai No; 820,012.

coinplished by such means as fare illustrated in the f accompanying drawings,` described in the lfollowing` specification and then more particularly pointed out as claimed. i i With reference tothe dravvings, wherein I have illustrated the preferred embodiment of my" invention as it is reduced to practice,

`andthroughout the several -vievvsi of which similar reference numerals designate corre spondingpartsz 1 i i i a il M i Figure 1` is aside 4elevation 'showing my improved valve gear attached to a locomotive', Y

`F'ggQ islan inside elevation of `the valve a `gear showing portions of the locomotive in 4dottedlines,and i Fig'. 3 is a fragmentary top plan view of `the valve gear showing a portion of a locomotiver` i .n i

Fig-4 is atransverse sectional vievsT taken substantially on the line 4 4 of Fig. 1i

`Referring to `the drawings;` i l designates the cylinder,l 2 thevalve chest having a valve therein not shown, and 3 the usual valve nectsthe piston" rod with theusual drive fGii the main "crank 6,is rigidly mounted `"anfauXiliary crank 7. To auxiliary: crankis coupled one end `of an `eccentric rod` 8; tached to different styleslof `locomotives and `Suitably `mounted .a upon :the Y locomotive is ai'rame 9 vvhich consists of transverse bars l() and 1l that are suitably secured attheir edges of the plates 12 andflower `end of the Y vplatesfor bars 13. i V'Ihe bars 14 extendidown- Wardly in a i convergent plane i With `respect i tothe fplatesl. rIhe transverse bars 10Lalid 11 arerecessed Vcentrally of their ends `or *stem or rodi The `usual cross headfl con-f` cut away so as to fit the boiler of the locon IIIOtive.v i y i i i l y a `The frame!) is secured by bolts or other suitable fastening means transverselyoi' the lower frame of the; locomotive. The connecting plates l2 and plates 18 and bars 114; `are a 1 disposed upon the sides of the locomotive adjacent'to the valve steam chest.`

p bracket 15. The bracket 15 is `Segured in any suitablermanner upon thek inner face of the side bar 10 of the frame adjacent to one end thereof is a U-shaped preferably secured by a bolt or bolts 16 and is removable With relation tothe frame. journaled as at 18 Within the bracket 15, is

Y connected Apivotallyat one end with the outer end of the valve rod erstemV 3 as at 19 and at its other end as at 20 `is pivotally connectedzone end of a substantially upright link-.21.. Thelink 21 is connected at itsother -orlovverend as at 22 With the eccentric rod 8 at the end ofthe eccentric rod. The ends YAoftheflink21 .are preferably bifurcated to Yreceive.the ends of the bell crank 17 and ec- ,-,centrici rod 8. .The eccentric rod 8 and link =21iare upon-the .inside of the plates 12 and 13 and barsy 14 ofthe Iframe 9. .Mounted in bearing brackets 23 that are; suitably secured 4 to the sidebar f11 yo f-the frame 9 and Vextend outwardly atv right a-ngles theretoy is a tumbling shaft designated 24 as anV entirety.

-This shaft 24 extends outwardly from the Vlocomotive `and terminates at a y point approximately flush with the plates i12 of the frame. A reach `rod 25 is operatively con- `v`nected as at`26 to an arm 24a of the tumbling r14S-fare joined Withtlie shaft 24 at a point spaced from the. ends of the `tumbling shaft preferably and 1 at its other fend is connected With the usualfreversing lever A27 that is carried; ink -the cab ofthe locomotive. yAn auxiliary' reach rod 2S-'is connected vatits ends as -at 29 and l3() respectivelyvvith theendof an farm 29a of ythetumbling shaft-24 vandfan apertured exltension 31Kthat is formed on the end of a "tumbling reverse yoke 32.. `The tumbling yoke lI 32 is l'approximately U-shaped and straddles 40 the plates 12 on the frame 9L The lower, ends l' ofthe sides of theyokearepivoted as at 33 v.tofthe frame 9 at that point Where the bars .plate 13 as clearly I jshovvn in Fig. 1 in the drawings. The plates 12' andrv .13 lserve -to-support@andl `properly guide the' tumbling yoke '32..1 The arms of the yoke r'are larranged uponopposite sides f 34 is'carried bythe inner side ofthe yoke 32 501- i adjacent to the upperfend thereof.

"A -bar Vor link 35 is pivotally` connecte'd 'asatfBG-Withthe eccentric rod ye at a point Vadjacent but slightly spaced Yfrom the connections 22 designating the connection ofthe 'upright link 21 andbar 8: The 'radius'bar o r link 35 is approximately upfight' and lconnected at its 'upper end pivyotally' ivifthjtheconnecting pin 34 as clearly shownV iIiFigs. 2 and 3- inI the drawings.

The radius bar :35 is supported byf'the tuin- Y bling yoke 32'? and it u'illbe readily seenthat upon the.manipulation ofthe lever 271, the

tumbling yoke 32v will be moved in an arc A bell crank 17 is and in so moving moves the radius bar or link in such a Way that the eccentric rod 8 l is caused to change its position and the reversing of the valve isresultant.

It ivill be readily seen with reference to the foregoing description and accompanying drawings that I have provided simple and In practice, I havo found that the form of my invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment, is the most` ef- -iicient and practical; yet realizing that the conditions concurrent with the adoption of my device will .necessarily vary, I desire to emphasize the v Afact. that various minor changes in details of construction, proportion, and arrangement of parts may be resorted to, When required, Without sacrificing any of the advantages of my invention, .as set forth. .l v

- f Wilnis @aimed ai;

:'Avalve gear including a transverse frame comprising front and rear transverse bars and a side plate connecting thetransverse bars and provided With-a depending portion having alower `terminal* located centrally -betvveen the ends of the side plate, a reverse yoke having spaced sides and straddling the Vside plate and pivoted at the lower ends of its sides tok thelovver end'of the said depending portion of the side plate, said yoke being provided at its upper end at its inner sidel with a horizontal connecting pin and havingfa longitudinal extensiony projecting above'the pin, va radius link located Within the fra-me at the inner face of the side plate Vand pivoted at its upper end to the reverse yoke'by the said pin, an eccentric rod con- {nected to 'the lower end kof the radius link and located Within the frame and extending inv advance 'of the said radius link, front and rear bearing brackets secured to the transverse bars of the said frame, a bell crank vmounted in the front bearing bracket in the transverse frame, an upright link located in advance'of the said yoke and connected with the bell crank lever and to the front end of the eccentric` rod and operating Within the said transverse frame, a valve rod ac- 1,249,534 j my `Jmated by the bell crank, a rockV Vshaft In testimony whereof I ax my signature journaled in the rer bearing bracket, en n presence of two Witnesses. auxlhary reach rod connected at lts front end to the extension of the reverse yoke and WILLAM L' SMTH connected at its rear end to the rock shaft, Witnesses:

and a reversing lever also connected with the C. V. PAIRO, Y

rock shaft. CHAS. J. CHUNN.

copies of this patent may be obtained for ve cen-ts each, By addressing the Commissioner of Patents,

, Washington, D. C.

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