US1110287A

US1110287A - Steam-engine valve-gear.

Info

Publication number: US1110287A
Application number: US78473513A
Authority: US
Inventors: William Sherman Brown
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-08-14
Filing date: 1913-08-14
Publication date: 1914-09-08
Anticipated expiration: 1931-09-08

Description

W. S. BROWN.

STEAM ENGINE VALVE GEAR.

APPLICATION FILED AUG.14, 1913.

1 1 1 0,287, Patented Sept. 8, 1914.,

. 2 SHEETS-sHBET 1- L U LJRNQQQ W. S. BROWN.

STEAM ENGINE VALVE GEAR.

APPLIUATION TILED AUG. 14, 1013.

1 1 1 0,287. Patented Sept. 8, 1914.

2 SHEETSSHEET 2!- :28- 4 37 22 76 76 22 wblmwow;

ward of the main crank. On

WILLIAM SHERMAN BROWN,

STEAM-ENGINE VALVE-GEAR,

Specification of Letters Yatent, Application filed August 14, 1913. Serial No. 784,735

0]? KNOXVILLE, TENNESSEE.

To all whom it may concern:

Be it known that I, WVILLIAM SHERMAN Brown, a citizen of the United States, re-' siding at Knoxville, in the county of Knoxand State of Tennessee, have invented a new and useful Im rovement in-Steam-Engine Valve-Gear, 0 which the following is a specification, reference being. had to the accompanying drawing.

My improvement relates particularl to mechanism for transmitting motion rom the crank of a drive wheel of a steam loco motive to the distributing valve'which admits steam to the cylinder.

The object of the improvement is to provide a construct-ion which is simple, has the parts accessibly located, and avoids irregularity of valve action due to lost motion or pounding at the crank.

This improvement is a modification of the mechanism described by my United States Patent Jo. 1,033,032, granted July 23, 1912, for steam-engine valve-gear In the accompanying drawings, Figure 1 is a side elevation, portions being broken away, showing my improvement applied to one side of a locomotive; Fig. 2 is a plan of a portion of the mechanism shown by Fig. 1; Fig. 3 is a section on the line3-3, of Fig. 1 looking toward the right, the slideblock being in its middle position; Fig. 4

a section on the line, 4-4, of Fig. 1 lookguid bolts, 9. The innermost of said bolt-sextend ing toward the right; Fig. 5 is a plan of a bridge; Fig. 6 is a side elevation of said bridge. I 1

Referring to said drawings, 1, is the usual valve stemextending to the distributing valve (not shown). The usual horizontal, parallel cross-head guide bars, 2, are supported at their rear ends by the. guide yoke extension, 3. The usual connecting rod or pitman. 4, is coupled to the usual main crank, 55, carried by a drive wheel, D. On the main crank, 5. is rigidly mounted a first auxiliary crank. 6, standing 00 degrees forsaid first auxilia v crank is a second auxiliary crank. 7, standing 90 degrees back of the first auxiliary crank and on the radius of the main crank. V

A bridge. 13. is located above the frame. A. and extends from the ordinarv guide yoke. 8. and guide-vnke extension. 3. the

crossbcam or plate, 10, and is secured to said guide yoke and to said cross-beam by means of bolts, 9. Said, bridge is in the form of a plate having its length horizontal and being turned to Y into an upright plane. At its real-end, the bridge has a lateral extension, 11, resting against the cross-beam, 10, andreceiving said bolts, 9. At its forward end' the'bridge has a transverse extension, 12, reaching to both sides of the body of the bridge and resting against the guide yoke, 8, and the e yoke extension, '3, and receiving said Patented Sept. s, 1914.

bring its long edges through the transverse extension, 12, and

the guide yoke, 8, while the others of said bolts extend through said member" and throngh'theguide yoke, 8, and theguide yoke extension, 3.

"On the'onter portion of member, 12, and integral therewith is an ear, 13, which is directed rearward; and on the inner portion of said transverse member is another car. 14. also d rected rearward and located horizontally oppositethe' ear,-

13. Each of said cars has a bearing, 15, receiving the ends of a shaft, 16. On said shaft is a bell crank or rockingmember, F, preferably rotatable onsaid shaft, the latter being held immovably in its bearings. ,Said bell crank has an approximately horizontal arm, 17, and a depending arm, 18. On the upper edge of the bridge. B, are horizontal bosses, 2 0. A segment, E, has at each end a foot. 21, resting upon one ofthe bosses, 20; and bolts, 22, extend through said feet and said bosses and secure said segment rigidly upon the bridge. B. Said segment is in the form of a plate having its body set in an upright plane. In said segment is a curved. slot. 23. in which rests a slide block, 24, to which is coupled the upper end of an approximately upright link. 25. The lower end of said linkis. coupled to the forward end of'the first al-ixiliarypitman rod. 26, by a bolt. 27. The rear end of said pitman rod is coupled to the first aux.- iliary crank. The slot; 23, made concentric with an axis which approximately intersects a linewhich is an extension of the cylinder axis and cutsv the axis of the drive wheel. D: and the'length of said link. 25. is such as. to allow the axis of said bolt. 17. to be coincident with the axis to 'which said slot is concen'tric. An apis preferably the transverse tiallv as described. 1

1 ter. a second movable member on said first outerside of a'drive'wheel for rocking said rocking member,

: .bination of avalv'est'em, reversing mechastem, -"means in drive wheel and a drive wheel for lation with the outer bination of a valve stem,

a moving said rocking member forward and relation with the outer side of a'drive wheel. for rocking said rock ng bination of'a valve stem,

' la tion with a drive wheel 0nd. movable member for substantially as described.

adrive wheel and with described. v -5. In asteam engine valve gear, the .com-

I'nism, a rocking member connected with said stem, means in operative relation with said a reversing mechanism for bodily moving said rocking memberzforward and backward, and

' movable side of a drive wheel for. rocking said rocking member, substan} 2. In asteam engine'valve geanthe coma rockingmember connected with'said stem, means in opera tive relation with a drive wheel for bodilv backward. and other means also in operative member, substam .tiall'vas described. f 1 p In a steam engine valve gear, the co1n-. a first movable member, means in operative relation with the outerside of 'adrive wheel and with said movable" member for moving the'latmovable member and connected with the valve stem, and means also in operative reand withsaid secmoving the latter.

4. In a steam engine valve gear, the combination of a valve stem, a rocking member connected with said stem, means in operative and reversing. mechanism for variably bodily moving said rocking member forward and backward, and other means also in operative relation with v said rocking mem-. her for rocking the lat bination of a valve stem, reversing. mecha other means in operative relation with the substantially as described.

6. r n a steam e gine valve gear, the commounted onsaid with the valve .movable member, I .9. In a steam engine valve gear, the comvtlie other having its upper end .in operative er, substantially as binationof auxiliary rod ,..lower end coupledto the auxiliary one having its upper end coupled to'sald re- :versing mechanism and the other having its -.ber,.substantially as described.

' bination' of ward andbackwardand other means also in operative relation with the outer side of rocking said IfOcking mem ber. substantially as described.

7. In a. steam engine bination of a valve stem, reversing;mechanism,.a first movablemember, means in op valve gear, the comerative relation withra drive wheel and said reversing mechanism and said movable member for moving the latter, a second member mounted on said first mov able member and connected with the valve stem, and means also in operative relation with a drive wheel and with said second movable member for moving the latter, substantially as described.

8. In a steam engine valve gear, the combridgepiece,

bination of a valve stenna bell crank, reversing mechanism, means in operatlve rel? 'tion with-said reversing mechanism for rocking said bellcrank, a movable member bell crank and connected stem, and means in operative relation-with a drive wheel for moving said substantially as described.

bination of avalve stem, a bell crank, means for rocking said bell crank, a movable member mounted on said bell crank and connected with the valve stem, and means in operative relation with a drive wheel for moving said mo able member, substantially as de- 3 scribed.

10. Ina steamengine valve gear, the combination of reversing mechanism, a first movable member, a valve stem, an auxiliary crank, an auxiliary rod coupled to said 8'5 crank, two approximately upright links each having its lower end coupled to the auxiliary rod and, one having its upper end coupled to said reversing mechanism and relation wlth said first movable member, a second movable member mounted on said first movable. member in operative relation with the valve stem, and means in operative relation with a drive wheel and said second movable member, substantially as described.

11, In a steamengine valve gear, the comreversing mechanism, a valve crank, an auxiliary crank, an coupled to said crank, two apo proximately upright links each having its rod and stem, a bell upper end coupled to said bell crank, a sec- 5 movable member mounted on said bell crank and inoperative relation with the valve stem, and means in operative relation with a drive wheel and said movable mem- Ina steam engine valve gear, the coman approximately hori aontal bridge-piecc, reversing mechanism,- fifirst movable member, a valve stem, an auxiliary crank, an auxiliary rod coupled to said ,cra-nk, two approximately uprightlinks each having its lower end coupled to the auxiliary rod and one having its upper end coupled to said reversing mechanism and the other having its upper end in operative relation with said first movable member, a second movable member mounted on said 7 first movable member and in operative relation with the valvestem, and means in operative relation with a drive wheel and said second movable member, substantially as described.

, 13. In a steam engine valve gear, the combination of an approximately horizontal reversing mechanism, a first movable member, a valve stem, a bell crank,

] an auxiliar'y'crank, an auxiliary rod coupled to saidcrank, two approximatel upright links each" having its lower en cu i f pledto the auxiliary'rod and one having its upper end coupled to said first movable memberand' the other having its upper end '14. In a steam engine valvegear, the

J 5 Combination ofa valve stem, a slide block,

meahsfor-moving said block, an auxiliary crank an auxiliary rod :coupled tosaid crank, a' first movable member, .two approximately" upright links each having its lower end coupled to the auxiliary rod and one having its upper end coupled. to said slide block and the other having its upper *endin operativerelation' with saidmovable memberyasecond movable member mounted on'said first movable member and connected with the valve stem, and means in operative relation with a drive wheel for moving said second movable -member, substantially as described}.

0 15211111 steam'engine valve gear, the combination of avalve stem, a slide block, means for moving said block, a bell crank, amovablemember mounted on said bell crank and connected with the valve stem, an auxiliary l3 .5 'crankyanj auxiliary rod coupled to said. crank, twoapproximately upright links each having its lower end coupled to the auxiliary 1 rod and-ronehaving its upper end coupled tOsaidslide block and thev other having its 40 upper end coupled to said bell crank, and.

r means" in operative relation with a, drive wheel for moving said second movable member, substantially as described.

-"16.-, Inna steam engine. valve gear,

the A5 combination of avalve stem, an gapproxi mately horizontal bridge-piece forming a slide'way, a slide block on said slide way, i means for moving said slide block, a first movable member, a. second movable member mounted on said first In ovable'member and is connected with the valve stem, an auxiliary crank, an. auxiliary rod coupled to said crank, two approximately upright links each-having'its lower end coupled to the auxiliary rod and. one having its upper end {coupled to said slide block and the other having its upper end in operative relation with said first movable member and means inoperative relation with a drive wheel for mov ng said second movable member, sub= stantially as described.

-17. In a steam engine valve gear, a. combination of a valve stem, an approximately horizontal bridge-piece forming-a slide way, a' slide block on said slide way, means for moving said slide block, a bell crank, a movable member mountedon said bell crank and in operative relation with the-valve stem,

an auxiliary crank, an auxiliary rod coupled to said crank, two approximately upright links each having its lower end coupled to the auxiliary, rod and one having its upper end coupled to the slide block and the other having its'upper end coupled to the bell crank, andmeans in. operative relation with a drive wheel for moving said movable. member, substantially as described. I i o i 18."In a steam engine valve gear, the combination ofa valve stem, a bracket, a bell crank hinged to said bracket, a movable membermounted on said bell crank andin operative relation with the valve stem, a slide block, means for-supporting said slide block, means for moving saidslide block, an auxiliary crank, an auxiliary rod on said auxiliary crank, two approximately upright links each having its lower end coupled tolsaid auxiliary rod and one'having its upper. end coupled to said slide block and .the other having its upper end coupled to said bell'crank, and means in operative relation with a drive wheel for moving said movable member, substantially as described. ln testimony whereof I have signed my jmme; in presence of two witnesses.

WILLIAM SHERMAN BROWN. ,W'itnessesf, I

' S. E lio ess, iGYBUsKiIIbIRi Go'pies 01 this patent may be obtain d for fiveicentseach, by-addressiiig the Commissioner of PatentswashingtontDhcpr