US872797A

US872797A - Throttle-valve.

Info

Publication number: US872797A
Authority: US
Inventors: John S Chambers
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-05-23
Filing date: 1907-05-23
Publication date: 1907-12-03
Anticipated expiration: 1924-12-03

Description

NQ.872,797.. PATENTEDDEG.8,1907. J.YS.OHAMBERS..

. THROTTLE VALVE.

'APELIUATION FILED MAR. 31. mos. RENEWED my 28, 1907.

2 SHBETSSHEE.T 1-

UPATENTED DEG'. 3,1907.

J. s. CHAMBERS; THROTTLE VALVE. APPLIOATION FILED MAR. 31, 1906. RENEWED MAY 28, 1907.

2 SHEETSr-HEET 2.

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[iii/av one,

JOHNB. CHAMBERS, F WILMINGTON, NORTE QAROLINA.

TQTTLE-VALVE.

no. veneer;

Epecifleation of Letters Patent.

Patented Dec. 3, 1907.

Application filed llcrcli 31. 1906. Serial No. 309}02(l. Renewed May 28. 1907. Serial No. 376,207.

To all whom-it may concern: I

ea it known that 1, 50m: S, CHAMBERS, a citizen of the United States, and resident of Wilmington, in the county of New Hanover end State o1": North Uei'oline, have invented new and useful. improvements in Throttle- Valves, of which the following is e specificalion.

invention relates. to improvements in at device of the above character in which the unbalanced area of the throttle stem is eliminoted by reason of the closed cavity in the etcndpipe end also the use of a throttle stern pecking is obviated because of this closed cavity. Furthermore, it is im )ossible for pine or cotters to Work "out on tie inside of the dome thus putting the engine out of 0 emlion and also the opemting rod may 6 zfemoved or adjusted at plccsuz'e while full pi'eseine is on the boiler.

A practical embodiment of my invention is represented in the accompanying drawings, in which Figure 1 represents so muchol e locomotive boiler in top plan, pertielly in section as will ill her 6.

give a clear understanding of the construcnon and operation of my IXIVQILLIOD', Fig. 2 1S detail side elevation partially in section,

end Fi 3 is a detail sectional view showing more clearly the throttle lever and its edjecent arts.

The ioiler is denoted by 1 well. of the cal) by z.

The dome is denoted by 3 end'the standpi-pe therein lay/i. The stand ipe is provided at its to with the usual ve ve seet 5 in which is seetet the outer throttle v'elve mem- This throttle valve member 6 is provided with it sent 7 concentric with the seat 5 in which eeeted an intermediate throttle velve inemher 8 This int-efmediete throttle velve member 8 ieprovided with'e seat 9 for e innni thine-tie velve member 10 carried log n extends downwardly into and the front a closed cavity 12 formed by extending a pipe 13 inwardly and upwardly in the standpipe- 4. i v

- A loose connecting iece 14 has a lower head 15 which is fitte to slide vertically in the upper end of the, pipe 13. This connect-' in'g piece 3.4 extends upwardly into contactwith the bottom of the Intermediate throttle valve member 8 Where it surrounds a depending lug 16 011 said valve member. necting iece 14 is provided with redial arms 17 who 1 are located beneath and spaced from the throttle valve member 6. The head 15 ofthe loose connecting piece Mis provided with ebutments 18 wlnchm'e arranged to be engaged by a shoulder 19 on the stem 11. The connecting piece 14 is provided with lugs 14* which normally rest upon the top of the pipe 13.

A. valve operating rod 20 extends laterally from within the closed cavity 12 to a oint exterior to the dome 3, the said rod eing located within e tube 21 which is secured at its inner end to the stendpipe and at its outer endto the dome by means of a, plug 22.

A steam-tight joint is provided for the operating rod 20 within the plug 22, which steam-tight joint in the resent instance is' shown as comprising 8, p urelit of annular shoulders 23 on the rod 20 Whic are located in e suitable metal filling 24c inthe plu 22 held in position by a screw cap 25. he velve operating rod 20 has fixed thereto Within the cavity 12 an arm 26 to the free end of which is loosely pivoted the lower end of the valve stem 11; Exterior to the'dome, the valve opereting'rod 20 has fixed thereto e depending arm 27 to the lower end of Whichis secured the-forward end of a connecting rod 28, the end of which extends throu h the front Wall of'the cab and has ed t ereto a rack bar 29 which is fitted to sli .e in a suitable bracketfil).

A throttle lever 31 ispivoted at 32 in the bracket and is provided with a toothed segment 33 which intermesheswith the rack he? .29 whereby the valve operating rod 20 may be rocked. by the movement of the throttle lever 31 4 In ope-rat supposing the ports to be in the position :3 own in Fig. '2, as the throttle lever is moved 'renrwardly, the arm 25 of the valve operating rod 20, located in the cavity 12' is swung upwardly. The first part of its 11 Ward movement o en the inner throte t valve member 16 t e permitting the This consiege? steam. to flow into the cavity 12 for counterbalaneing the intermediate throttle valve member 8. the rod 11 is moved upwardly, its shoulder 19 will engsge the abutments 18 of the connecting piece 14. As the corlrieetin piece 14 moves upwardly, it will lift the vs vs member. 8 away from the uter throttle valve member 6 and finally the arms 17 of the. connecting piece will engage the bottom oi the throttle valve member 6 and lift it from its seat in the top of the stand pipe. Asthe operation is reversed, the valve member 6 Will first be closed, then the valve member 8 and finally the valve member 10, thus absolutely shutting oil the admission of steam to the cavity 12 when the standpipe is closed. provided for counterbalanoing the Volvo.

at the some time the need of e throttlestere.

packing is obviated.

For the purpose of pennitting. the. valve operatin rod 2% to be readily removed or ad justed, tlle inner'eiid of the rod 20 is provided with enermular portion 3% which enters e recess in the arm 26 and the arm 26 is provided with a bearing stud 35 located in a recess 35 in the standpipe.

3.. stand-pipe, a valve, its seat, a closed ce-vity in the etendpipe below the valve and 'QHEZEYBS extending into the closed. cevitjy for seeming and cl osing the valve.

2. In 4 a standpipe, a valve comprising a plurality ct members, seats therefor, a closed is the stondpipe below the valve and means extending mto the closed .ievity for opening and closing the valve... 3. In a standpipe, s valve compnsmg a plurality of valve members, seats therefor, a

closed cavity in the standbipe belowthe valve, a valve stem extended into the said closed cavity and means extending into the cavity connected to said valve stem for openingand closing the valve.

e. in a standpipe, a valve comprising outer,'intermediste and inner valve members, seats therefor, a closed cavity, a valve stem extended into said cavity and means extending into the cavity connected to said valve stem for opening and closing the valve.

5. In a standpipe, a valve comprising e plurality of valve members, seats therefor, a

closed cavit in the .standpipe below the valve, a valve stem extendinglrom. one of the vslve members into the closed cavity, a comiectin piece lie-ling a sliding m0vement rated by the valve stem into said c 261 means IiQGCi-Cl. to the the val lo a 1 I valve compris ng on t, an intermediate mom nor member and. i

the stsndpipe be ow the v tile 1n- It will thus be seen thstmesns eretermediate valve member and having e slial ing movement in said cavity and arranged to engage the outer valve member as the connecting piece is raised, a valve stem. for the inner valve member having" a shoulder arranged to engage the connecting piece as the valve stem is raised after the "mar valve is opened to open communication to the closed cavity and means connected to the valve stem for opening and closing the valve.

7. In it standpipe, a valve, its seat, aclosed cavity in the stsndpigoe below the valve, a valve stem extended into the cavity and a valve operating rod extending into s id cavity COIlIlQutGCl to valve stem for opening and closing the sainc.

:8. "hiavstamteipez, a velve itsfse'at, a closed eevltjl o the SQiEEYPIplRJOEV QEG valve, a valve stemefittended' into the cavity, a valve operating rod extended into the cavity and.

an arm fixed to the rod connected to the valve stem for opening and closing the valve.

9. In a standpipe, a valve, its seat. a closed cavity in the standpipe below the valve, a

valve stem extended into the cavity, a throttle lever" and a valve operating rod extended into the cavity having an erm within the cavity connected to the valve stem and an arm exterior to the cavity connected to the throttle lever.

10, A steam dome, standpipe therein, a throttle valve, its seat, valve stern and e rocking valve operating rod having an arm connected to the valvestem said rod being extended to the exterior through the side of the steam dome.

11. A. steam dome, a standpipe therein, a throttle valve, its seat, a valve stem, e throttle lever and a rocking valve operating rod having an arm connected to thevalvestem at a point within the standpipe and an arm exterior 'to the steam dome connected to the throttle lever.

12. A steam dome, a standpipe therein, a throttle valve, its seat, a closed cavity in the standpipe below the valve, a valve stem. extended into the closed cavity and s valve operating rod having an arm in said closed covityconneoted to the valve stem, said valve oJerating rod extending to the exterior of t 14;. A stcem dome, a stendpipe therein, a 1

closed cavity in the stendpipe, a ti1be,co11 sec-ting; the closed cavity with the side wall of the dome, a throttle valve, its seat, a valve stem encoded into said cavity and a. valve operating rod located. 12 said tube having an arm in the cavity connected to the valve I stem.

A steam dome, a standpipe therein, a closed cavity in the standpi ie, a tube connecting the closed cavity wit the side oi the dome, a throttle valve, its seat, a valve stem 7 extended into the closed cavity, a throttle lever and a valve operating rod located in said tube having an arm in the closed cavity connected to the valve stem and an arm eXterior to the drum connected to the throttle lever.

i 16. A steam dome, a'standpipe therein, a closed cavity in the standpipe, a throttle valvef'its seat, 'a valve stem extended into the closed cavity, a valve operating rod extended into the closed cavity, a valve operating'rod extended from the exterior of the dome into the-closed cavity and an arm retended into the cavity, an arm located in said cavity connected to the valve stem anda valve operating rod located insaid tube rcmpvablyengaged with said arm in the closedcavity.

18. A steam dome, astand-pipe therein, a throttle valve, its seat, a valve stem, a rocking valve operating rod extending through the'vvall of the dome and a steam-tight joint for said rocking rod comprising a stationary metal filling through which the operating rod passes and a plurality of annular shoulders fixed-on the rod and located in said filling.

19. A steam dome, a stand-pipe therein, a

closed cavity in the stand-pipe, a tube connecting the side Wall of the dome with the cavity, a throttle valve,'its seat, a stem extended into the cavity, a valve operating rod in the "tube connected to said valve stem and a steam-tight joint comprising a metal filling through which the rod passes and a plurality of annular shoulders on the rod located in the said filling.

20. A steam dome, 'a stand-pipe therein, a closed cavity in the stand-pipe, a tube connecting the side wall of the dome with the cavity, a throttle valve, its seat, a stem 8X tended into the cavity, -avalve operating rod located in the tube and connected to the said stem and a steam-tight joint comprising aplug, a metal filling therefor through which the rod passes and a plurality of annular shoulde on the rod located in the said fill- I ing.

In testimony, that 1 claim the foregoing as my invention, 1 have signed my name in presence of two witnesses, this twenty-fourth day ofMiarch, 1906. r

JOHN S. CHAMBERS.

Witnesses:

O. M. BUTLER, JAs. P. WINGO, JR.